Trng i Hc Cng Nghip H Ni n tt nghipNhn xt ca gio vin hng dnLp LT CH C Kh1-K3 Khoa C Kh1Trng i Hc Cng Nghip H Ni n tt nghipNhn xt ca hi ngLp LT CH C Kh1-K3 Khoa C Kh2Trng i Hc Cng Nghip H Ni n tt nghipLi ni uTrong xu th pht trin nn kinh t th gii, ngnh cng nghip ni chung v ngnh cng nghip nng ni ring, hin ang c u t v u tin pht trin. Bi t trng ng gp cho nn kinh t rt ln ca ngnh cng nghip nn ngnh ny bao gi cng c quan tm n hng u v c coi l ch tiu nh gi s pht trin ca ngnh kinh t ng thi cng l ch s nh gi s pht trin ca t nc. thc hin mc tiu: Cng nghip ho - Hin i ha t nc. M ng v nh nc ta ra, chng ta phi thc hin pht trin mt s nghnh nh: Cng ngh thng tin, in t, Cng ngh ch to my. Trong nghnh Cng ngh ch to my c vai tr then cht v n l tin pht trin mt s nghnh khoa hc k thut khc, ng gp ca nghnh cng ngh ch to my vo nn kinh t quc dn l rt ln. Bi vy vic i mi v hin i ngnh cng ngh ch to my c vai tr ht sc quan trng v c ngha kinh t ln, v n c th to ra nhng sn phm c kh c cht lng tt, gi thnh h.Sau mt thi gian hc tp c s l thuyt cc mn chuyn ngnh ni chung v mn ch to my ni ring cng vi s tm hiu trong thc t. Chng em c giao nhn ti tt Lp LT CH C Kh1-K3 Khoa C Kh3Trng i Hc Cng Nghip H Ni n tt nghipnghip thit k v ch to t thy lc y l mt ti mang tnh ng dng thc t cao trong sn xut v ch to. Trong qu trnh tm hiu v thc hin ti cn rt nhiu thiu xt cng nh vic ti u tnh cng ngh ca sn phm do cn thiu kinh nghim trong thc t. Song di s hng dn tn tnh ca thy Nguyn Sn nh v s gip nhit tnh ca cc thy c gio trong khoa C Kh gip chng em hon thnh ti tt nghip ca mnh. Do gp nhiu kh khn trong vic tm hiu ti liu v tnh cng ngh ca sn phm nn khng th trnh khi nhng thiu xt v s ti u ho ca ti. Vy em mong c s ch bo thm ca cc thy v kin ng gp ca cc bn ti tt nghip ca chng em c hon thin hn v qua s gip chng em nhiu hn trong qu trnh lm vic thc t sau ny.Qua y chng em xin chn thnh cm n cc thy c gio trong khoa c kh c bit l thy Nguyn Sn nh trc tip hng dn chng em trong qu trnh thc hin ti. Chng em xin chn thnh cm n !Nhm sinh vin thc hinNguyn Vn nhinh Vit nhNguyn T nh

Lp LT CH C Kh1-K3 Khoa C Kh4Trng i Hc Cng Nghip H Ni n tt nghip

Chng I : GII THIU CHUNG V CC LOI Tt l mt g kp cht v gi chi tit trong qu trnh gia cng hoc lp rp. t gm mt thn v hai hm kp (mt c nh v mt di ng) gi v kp cht chi tit gia cng. t thc hin lc kp bng tay quay, vt-ai c, bng bnh lch tm, bng kh nn, bng thu lc. t c chia ra: t tay, t lp trn bn th ngui, t lp trn bn myLp LT CH C Kh1-K3 Khoa C Kh5Trng i Hc Cng Nghip H Ni n tt nghipLp LT CH C Kh1-K3 Khoa C Kh6Trng i Hc Cng Nghip H Ni n tt nghipLp LT CH C Kh1-K3 Khoa C Kh7Trng i Hc Cng Nghip H Ni n tt nghipLp LT CH C Kh1-K3 Khoa C Kh8Trng i Hc Cng Nghip H Ni n tt nghipCu to ca eto HPT-4Lp LT CH C Kh1-K3 Khoa C Kh9Trng i Hc Cng Nghip H Ni n tt nghipLp LT CH C Kh1-K3 Khoa C Kh10Trng i Hc Cng Nghip H Ni n tt nghipLp LT CH C Kh1-K3 Khoa C Kh11Trng i Hc Cng Nghip H Ni n tt nghip1. Cu to nguyn l lm vic ca eto ngui. a.Cuto :1. Trc vt me .2. ai c .3. Tay quay.4. M tnh .5. M kp.6. M ng.b. Nguyn l lm vic : khi ta quay tay quay 3 theo chiu kim ng h th trc vt me1 tin vo n khp vi ai c 2 lm cho m ng 2 cng tin vo tip xc vi chi tit to ra lc kp .Khi gia cng xong chi tit ta quay tay quay 3 theo chiu ngc li lm cho m ng tin ra va ni lngchi tit.c. u nhc im .- u im.+ Cu to n gin,d s dng.+gi thnh ch to r,c s dng rng ri.- Nhc im.+ V kp cht bng tay nn lc kp khng n nh ,r gy bin dng chi tit nu lc kp qu ln, n u lc khng ln th chi tit c th b x dch trong qu trnh gia cng.2. Cu to nguyn l lm vic ca t vn nng.a.Cu to.V c bn ging eto ngui gm c: ,m ngm tnh,trc vt me,tay quay nng cao tnh nng lm vic ngi ta ch to ra cc loi gn vi thn gip thn c th xoay theo mt phng nm ngang so vi mtgc t 00-3600 nh tht xoay v xoay theo mt phng ng mt gc t 0-900.Hai m kp ca t thng l tm phng c th tho ra thay th cc loi m kp khc c hnh dng ph hp vi b mt chi tit gia cng .b. Nguyn l lm vic :khi ta quay tay quaytheo chiu kim ng h th trc vt me tin vo n khp vi ai clm cho m ngcng tin vo tip xc vi chi tit to ra lc kp Lp LT CH C Kh1-K3 Khoa C Kh12Trng i Hc Cng Nghip H Ni n tt nghip.Khi gia cng xong chi tit ta quay tay quaytheo chiu ngc li lm cho m ng tin ra va ni lngchi tit.Thn eto c th xoay theo mt phng nm ngang so vi 1 gc t 0-900 .c. u nhc im .- u im :+ Cu to n gin,d s dng.+gi thnh ch to r,c s dng rng ri.+C th gia cng c nhng chi tit c hnh dng phc tp .-Nhc im .+v kp cht bng tay nn lc kp khng n nh ,r gy bin dng chi tit nu lc kp qu ln ,nu lc khng ln th chi tit c th b x dch trong qu trnh gia cng.+Hnh dng cng knh ch to phc tp hn t ngui+ Trong cc loi eto vn nng th loi eto c thn xoay c cc gc khc nhau s c cng vng thp hn so vi cc loi eto c thn c ch to lin vi Lp LT CH C Kh1-K3 Khoa C Kh13Trng i Hc Cng Nghip H Ni n tt nghipChng ii: tng quan v t thY LCI.Chc nng v kh nng ng dng ca t thy lc1.Chc nng. Lp LT CH C Kh1-K3 Khoa C Kh14Trng i Hc Cng Nghip H Ni n tt nghip t l mt g vn nng. Dng g t gia cng cc mt phng, cc rnh nghing m bo mt gc no theo yu cu k thut v c thc hin mt cch d dng m khng cn n cc g phc tp cng knh khc.2. Kh nng ng dng. t thy lc c s dng rt thch hp cho vic g t chi tit trn my phay v my mi phng. Dng gia cng cc chi tit c kch thc va v nh. Vic g t c thc hin d dng do c cu iu chnh khng qu phc tp. Vic iu chnh c thc hin bng tay thng qua cc vt hm v bulng ai c, m bo c chnh xc nh vch chia v cng vng khi lm vic.3. Cu to, nguyn l lm vic ca t thu lc. Lp LT CH C Kh1-K3 Khoa C Kh15Trng i Hc Cng Nghip H Ni n tt nghip a. Cu to :1. M tnh 2. Mt, cththayi dngmtrn, mcrnhV. Mcrnhqu trm3. M ng vi c cu thu lc nm trong .4. Trc quay thu lc 5. Tay quay6. Mt trt trn thn t7. Cht hmmngeto,cht ctcdngdchomngngyn, khi quay tay quay th m ng s tin ln kp cht chi tit .8. l c t, l c tc dng cm cht 7 qua. Mi khi kp vt c hnh dng khc nhau th phi iu chnh m ng ca t n mc c ph hp trc khi kp .9. ng ni di tay quay. Khi ta a m ng vo l 8 trong cng hoc th 2 th ta khng th dng tay quay na m cn thm ng ni di ny, n c tc dng kp cht nhng vt nh.10. bulong ai c .11. rnh kp bulong xoay .12. xoay.13. vch chia trn xoay.Lp LT CH C Kh1-K3 Khoa C Kh16Trng i Hc Cng Nghip H Ni n tt nghipLp LT CH C Kh1-K3 Khoa C Kh17Trng i Hc Cng Nghip H Ni n tt nghipLp LT CH C Kh1-K3 Khoa C Kh18Trng i Hc Cng Nghip H Ni n tt nghipb. Nguyn l hot ng. Qu trnh g t chi tit gia cng trn t thu lc c chia ra lm hai giai on:kp cht s b bng c v kp cht bng thu lc. +Giai on 1:Qu trnh kp cht bng c c nguyn l ging vi nguyn l ca cc loi eto vn nng v eto ngui .+ Giai on 2:Qu trnh kp cht bng thu lcc thc hin sau khi kp cht s b bng c, to ra lc kp ln hn gip cho kp cht chi tit tt hn.Vic kp cht bng thu lc c thc hin bng qu trnh p du trong b xilanh-pittongc.u nhc im.- u im:+Trong k thut g c kh ho vic nh v kp cht tho g cc chi tit khi gia cng trn cc my vic kp cht bng thu lc c s dng rng ri .+Thu lc cho php kp cht mt cch chc chn nn c th tng ch ct, gimthi gianph, gimnhsclaongcangi cngnhn.Vicdng truyn ng thu lc tc ng nhanh cn to kh nng nng cao chnh xc ca chi tit gia cng do c th iu chnh lc kp v bin dng cng nh iu chnh v cp tc dch chuyn .Lp LT CH C Kh1-K3 Khoa C Kh19Trng i Hc Cng Nghip H Ni n tt nghip+A p sut du p c th tng cao (12 25 ln ) so vi p sut kh nn ,du b nn t hn c lc kp nh nhau, ng knh ca cc xilanh lm vicnh hn nhiu v vy kch thc g cng vng hn ,t n, lc kp m hn v c th truyn trc tip t xilanh thu lc n cc chi tit. +gtruynngthulccthgiacngnhiuchvnhiuv tr, do dng du lm cht lng cng tc nn cc b mt lm vic trong h thng g thu lc c bi trn tt, gim mn ca cc chi tit v b phn.*Nhc im:+ gi thnh ch to cao hn t vn nng v eto ngui.+Ch to phc tp hn, phi ch n cc m lm kn trong xilanh thu lc v nu r du m khng c b xung lc kp s gim.+Tnh cht ca du thay i theo nhit , lm thay i c tnh lm vic ca xilanh thu lc, vic chm sc bo dng v chng r r yu cu cao*kt lun :-Ch to ra tthu lc l mt bc tin vi nhiu u im ni bt so vi cc loi t khc nh : t ngui, vn nng .Bn v phn rLp LT CH C Kh1-K3 Khoa C Kh20Trng i Hc Cng Nghip H Ni n tt nghipChng iii: TNH TON THIT K V CH TO t thy lcLp LT CH C Kh1-K3 Khoa C Kh21Trng i Hc Cng Nghip H Ni n tt nghip T yu cu ca ti nghin cu Tnh ton thit k ch to t thy lc vi yu cu - Lc kp: 71 KN- Kch thc m kp RxC:200x60mm- Khong m ca t:0-180 mm -Tatinhnhtnhtonthit kvchtotthylcnh sau:I. Hnh dng t- C khi lng 54 kg

Lp LT CH C Kh1-K3 Khoa C Kh22Trng i Hc Cng Nghip H Ni n tt nghip2514519323757323016061100200132B-B A-AVew I:IStt Tnchi ti?t S? lu?ng1 N?a tinh 12 M k?p tinh 13 Bulng M8 124 M k?p d?ng 15 B?c t? 16 Ch?t t? 17 Tr?c d?n k?p 18 N?a d?ng 19 Kh?i c? 110 Tr?c k?p thu? l?c 111 Bich d?ng 112 L xo 113 Ch?t c 114 Bi 115 Ch?t thu? l?c 116 Ch?t c? 1Lp LT CH C Kh1-K3 Khoa C Kh23Trng i Hc Cng Nghip H Ni n tt nghipII. Cu to v yu cu k thut ca cc chi tit1. M tnhLp LT CH C Kh1-K3 Khoa C Kh24Trng i Hc Cng Nghip H Ni n tt nghip

Chi tit c kt cu khng qu phc tp. B mt lm vic quan trng ca chi tit l b mt trt v m kp cn chnh xc v bng b mt cao, ng thi m kp cng i hi cn c cng c bn un cao, ng nht khng bin tnh.ngoi ra cc b mt lm vic khc cng quan trng l 2 mt bn pha ngoi lp ghp vi chi tit khc v l 20 cng i hi chnh xc v vung gc vi b mt 2 m pha ngoi ca chi tit.cc l c tc dng nh c gii hn khong m ca t. M tnh v thn trt c ni cng v c nh vi nhau, pha di y ca t c cc l v rnh bt cht ln bn my hoc g gia cng chi tit.Phn m kp c thit k c thm mt ming cn m hnh khi V hoc hnh ch nht, c c nh bng vt c tc dng khi b mn hoc thay th khi gia cng. Chi tit lm vic trong iu kin chu tc dng ca lc ct . Yu cu k thut ca m tnh.-Vt liu: Thp CT3. cng t 45HRC- khng song song gia hai mt ngoi C,D ca 2 mt bn 0.05.Lp LT CH C Kh1-K3 Khoa C Kh25Trng i Hc Cng Nghip H Ni n tt nghip- khng vung gc gia m kp v thn trt l 0.05.- Gia cng t bng theo yu cu k thut.- B mt trt t bng Ra=2,5. Cc b mt khc t Rz=40- Chi tit c t cp chnh xc 2- Vt liu thp C45- Khi lng 39kg . Bn v chi tit m tnh.180BB356110552R14R9190178132230521405039161 100 1001458918-5-2011ngy k htnt hit kduytHu?ngd?nt rch nhimbn vchi t itt hitkquy t r nh cng nghgia cng na t nh n t tnghip mn hc cng nghcht o m yvtl iu : t hpc45t l: 1:1t :Kh?i lu ?ng:St:Tru? ng ihc cng nghi ph nikhoa: ckhl p: l tcd-dh ck1-k3nguyn sn nhnguyn sn nhnguyn t nh- 0,120,50,50,20,1 0,1 0,2- 0,12+ 0,140,50,50,50,50,52,50,516- 0,1250 82132112573170271857325323070 8020 95 89 26145 228561301202552+0.264 0,10,3 0,3252 l? M80,20,120,2283 0,20,50,5 0,50,50,20,2R60 R15R30R15R30 R60 2ARz40R z 4 0Rz40BCDEyu c?u ki thu?tcc b? m?t gia cng ph?i d?m b?o dng yuc?u kithu?t nhu b?n v?.d? khng vung gc gi?a m?t A v?i m?t E l0.04mm, d? khng vung gc gi?a du?ng tml? c? v?i m?t B l 0.04mm, d? khng ph?ngc?a b? m?t A l 0.01mm/100mm chi?u di.Lp LT CH C Kh1-K3 Khoa C Kh26Trng i Hc Cng Nghip H Ni n tt nghip2. M ngLp LT CH C Kh1-K3 Khoa C Kh27Trng i Hc Cng Nghip H Ni n tt nghip Hm ngt l mtmt b phn cagt ,Dng nh v vkpcht chi titkhigia cng. B mt lmvic ch yu ca chitit l mt C,D v mt A,B l b mt dng trt m ng trn mt m tnh,vl 30 c tc dg lp bc to chuyn ng kp cht cho g.Hmngetolmtchi titchnhdngvktcu khng my phc tp , khi lng ca chi tit nh , tnh cng ngh Lp LT CH C Kh1-K3 Khoa C Kh28Trng i Hc Cng Nghip H Ni n tt nghipva phi,cthgia cngbngcc dngc ct thngthng trn cc my gia cng truyn thng , ch to d dng , lng d gia cng khng ln , cc nguyn cng gia cng ch yu trn cc my phay , khoan v my mi phng . Tuy nhin ta cn ch mt s bc cng ngh chnh l gia cngmt A v mt B t bng Ra2,5 v m bo khng song song l 0,02/100mm, khng vung gc gia mt B v mt C l 0,02mm.Cc b mt gia cng cn lich cn t nhn bng l Rz20. Phn tch yu cu k thut .Khi gia cng chi tit hm ngeto ta cn ch n mt s kch thc sau : - khng song gia mt A v mt B ,0.02/100 mm- khng vung gc gia mt C v mt B 5000 > 50.000 V chi tit c G = 38,7Kg nm trong khong 4 200 Kg vi sn lng hng nm l: 4400 chi tit /nm. Nn dng sn xut ta xc nh c l hng khi. Vi dng sn xut ny th phng n gia cng l ta phi phn tn nguyn cng mc va phi. III. ph ng n ch to phi v xc nh l ng d 1.ph ng n ch to phi :*.c trong khun ct:ctrongkhunct ldngcphbin. Khunct lloi khun c mt ln( ch c mt ln riph khun).Vt c to hnh trong khun ct c chnh xc tng i cao.Ktcucachi titkhngquphctpnntadngphng php c, do b mt khng lm vic khng cn chnh xc v ngvi snxut hnglot vanntachnphngphpc Lp LT CH C Kh1-K3 Khoa C Kh59Trng i Hc Cng Nghip H Ni n tt nghiptrong khun ct.Lmkhun bng my. Sau khi c cn c nguyn cng lm sch v ct ba via .2. Xc nh l ng d gia cng : Lng d gia cng c xc nh hp l v tr s v dung sai s gp phn bo m hiu qu kinh t ca qu trnh cng ngh v :Lng d qu ln s tn nguyn vt liu, tiu hao lao ng gia cng nhiu ng thi tn nng lng in , dng c ct , vn chuyn nng . . . dn n gi thnh tng.Ngc li , lng d qu nh s khng ht i cc sai lch ca phi bin phi thnh chi tit hon chnh. Trong cng ngh ch to my , ngi ta s dng hai phng php sau y xc nh lng d gia cng:Phng php thng k kinh nghim.Phng php tnh ton phn tch. Phng php thng k kinh nghim xc nh lng d gia cng bng kinh nghim. Nhc im ca phng php ny l khng xt n nhng iu kin gia cng c th nn gi tr lng d th-ng ln hn gi tr cn thit. Ngc li , phngphp tnh ton phn tch da trn c s phn tch cc yu t to ra lp kim loi cn phi ctgt to ra chi tit hon chnh. Tra lng d theo s tay cng ngh ch to my tp 1 bng 3-95-Lng d mt trtl 7.-Lng d hai mt bn ngoi l 6.-Lng d hai mt bn trong l 6. - Lng d mt y l 7.T ta c bn v lng phi sau:Lp LT CH C Kh1-K3 Khoa C Kh60Trng i Hc Cng Nghip H Ni n tt nghip180BBA A356110552R14R919017882230180BBA A356110552R14R919017882230521406005039161 100 100145892918-5-2011ngy k htnt hitkduytHu ?ngd?nt rchnhimbn v chi t itt hitkquy t r nh c ng nghgia cng na t nh n t tnghipmn hc cng nghcht o m yv tl iu : t hpc45t l:1:1t :Kh?i l u?ng:St:Tru ?ng ihc cng nghi p h nik hoa: ckhl p: l tcd-dh c k1-k3nguyn sn nhnguyn sn nhnguyn tnh18-5-2011ngy k htnt hitkduytHu ?ngd?nt rchnhimbn v l ng phit hitkquy t r nh c ng nghgia cng gi iu chnh n mn hccng nghcht o m yv tl iu : t hpct 3t l:1:1t :Kh?i l u?ng:St:Tru ?ng ihc cng nghi p h nik hoa: ckhl p: l tcd-dh c k1-k3666666644nguyn sn nhnguyn sn nhLp LT CH C Kh1-K3 Khoa C Kh61Trng i Hc Cng Nghip H Ni n tt nghipIV. lp quy trnh cng ngh ch to m tnh t.1.Nguyn cng I: c phi1.1: S nguyn cng:a. Mc ch .-Phi c phi m bo phn phi lng d cn thit gia cng t yu cu k thut ca bn v chi tit .-Lm sch ba via u rt, u ngt khi a vo gia cng.b. Yu cu k thut.-Chitit phi cn i v hnh dng ng thnh phn c tnhkhng b nt r, khng b cong vnh v c tp cht.-Phi c t cp chnh xc 2.c. Dng c do : Thc cp 1/50d. Bc th: 3/7Lp LT CH C Kh1-K3 Khoa C Kh62Trng i Hc Cng Nghip H Ni n tt nghip2.nguyn cng II: phay phay mt y h2.1: S nguyn cng:

P18t (mm)S (mm/vng) n (v/p) Dao My B cP18375 95 2600 475 16H12 Phay thPhay tinh6H12v(m/p) T (Pht)189 1,2446,45204nguy n cng II :PHAYMT YsRz4089

Lp LT CH C Kh1-K3 Khoa C Kh63Trng i Hc Cng Nghip H Ni n tt nghip2.2: Phn tch nguyn cng:a.Mc chy l b mt lm chun gia cng cc b mt khc khi ch to v l b mt tip xc vi bn my ca m tnh v vy b mt gia cng cn t bng v chnh xc.b.nh v S dng g kp cht bn t v 2 phin t nh v mt di hn ch 3 bc t do.d.Kp cht Dng c cu kt chuyn dng v c th tho lp nhanh chi tit trong qu trnh gia cng hng lot .c.MyDa vo yu cu ca b mt gia cng cn t l Rz40 do ta chn my phay ng 6H12 c:Cng sut ng c7kwHiu sut my75 . 0 Khong cch t mt nt ca trc chnh ti bn my l ) ( 400 30 mm Kch thc lm vic ca bn my:Rng 320mmDi 1250mmDch chuyn ln nht ca bn my;Dc 700mmNgang 160mmThng ng 370mmd.Dao Lp LT CH C Kh1-K3 Khoa C Kh64Trng i Hc Cng Nghip H Ni n tt nghipDa vo bng 494 (s tay CNCTM T1) chn dao phay mt u rng chp mnh HKC BK8 c: D = 120, Z =10 , =600 = -100 Da vo bng 5-127(s tay CNCTM T2)Chn tui bn dao l T=120(pht) e.Dng c o- Thc cp 1/50f. Bc th 3/72.3: Ch ct:*Bc 1: Phay th: a. Chiu su ct: t =3 (mm) b. Lng chy dao. Theo bng 5-146 ( S tay CNCTM (tp 2))chn SZ = 0,1( mm/ rng ) Tra bng 5-125 s tay CNCTM T2 ta c.( ) vg mm Sz/ 24 . 0 2 . 0 an ton ta nhn vi cc h s iu chnh sau.- h s iu chnh ph thuc vo cch g lp dao phay 1 glk- h s iu chnh ph thuc vo gc nghing chnh1 nckm ( ) rg mm k S Sdc z z/ ) 24 . 0 2 . 0 ( 1 . 1 ). 24 . 0 2 . 0 ( . do chi tit c v cng nn ta chn Sz=0.2 (mm/rg)c. Vn tc ct.Tra bng 5-127 s tay CNCTM T2 ta c.Vb=204 (m/ph) an ton ta nhn vi cc h s iu chnh sau.- h s iu chnh ph thuc vo cng ca gang 1 ck- h s iu chnh ph thuc vo chu k bn ca dao 1 bk- h s iu chnh ph thuc vo mc hp kim cng 8 . 0 hkk- h s iu chnh vo trng thi b mt gia cng8 . 0 bmk - h s iu chnh ph thuc vo chiu rng phay1 rdkVy( ) ph m k k k k k V Vrd bm hk b c b/ 56 . 130 1 . 8 , 0 . 8 , 0 . 1 . 1 . 204 . . . . S vng quai ca my l.( ) ph vgdvn / 79 , 415100 . 14 , 356 , 130 . 1000.1000 Lp LT CH C Kh1-K3 Khoa C Kh65Trng i Hc Cng Nghip H Ni n tt nghipi chiu vi thuyt minh my ta chn ( ) ph vg nm/ 375 Tnh li vn tc ct thc l.( ) ph mn dvm/ 13 , 1411000375 . 120 . 14 , 31000. . d, Tnh SP v SzthSP=Sz.n.Z=0,2.375.10=750mm/phTheo thuyt minh my ta chn SPT=750mm/phVy( ) rg mmZ nSSptz/ 2 . 010 . 375750. d. Bc tin ca bn my:Sp = nt .Z. Sz =375.5.0,1 = 187,5 (mm/p)Chn theo thuyt minh my 6H12 chn: Sp = 150 (mm/p)Lng tin dao rng thc t :Sz=5 . 19095.Z nStp=0,1(mm/rng) e. Lc ct PZ: p dng cng thc: Pz=. . . ...x y upMP qCt S B ZKDn -Trong h s CP v cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68,20,860,721 0,7860- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Kp=KMP=17501]1

vnB (do B= 750) Pz=0 786 , 01 72 , 0 86 , 0190 . 205 . 100 . 1 , 0 . 5 , 2 . 2 , 68=1356,3(KG)f. Cng sut ct gt:Lp LT CH C Kh1-K3 Khoa C Kh66Trng i Hc Cng Nghip H Ni n tt nghip Tra bng 5-129 s tay CNCTM T2 ta c.( ) kw Ncg6 . 4 i chiu vi thuyt minh my ta thy, my lm vic an ton Vy m bo s an ton khi ct gt g . Thi gian chy my :Tm = iSL L Lp.2 1 + + pht L =573 mm L1=0,5.( ) D D B 2 2+(0,53)=0,5.) 20 20 100 (2 2 +(0,5-3)= 36,4 mmL2= 1-6 mm chn L2=4 mm S lt ct i = 4 Vy Tm=7504 4 , 36 573 + +.4 = 3,24 pht -Ta phay nhiu ln t kch thc vi cng ch ct nh tnh ton trn*Bc 2: Phay tinh:a)Chiu su ct.t= 1mmb)Lng tin dao.Tra bng 5-125 s tay CNCTM T2 ta c.( ) rg mm S / 8 . 0 5 . 00 Ta chn S0=0.8(mm/rg)m( ) rg mmZSSz/ 08 , 0108 , 00 c) c, Tc ct (m/ph)Tra bng 5-127 s tay CNCTM T2 ta c.Vb=260 (m/ph) an ton ta nhn vi cc h s iu chnh sau.- h s iu chnh ph thuc vo cng ca gang 1 ck- h s iu chnh ph thuc vo chu k bn ca dao 1 bk- h s iu chnh ph thuc vo mc hp kim cng 8 . 0 hkk- h s iu chnh vo trng thi b mt gia cng1 bmk Lp LT CH C Kh1-K3 Khoa C Kh67Trng i Hc Cng Nghip H Ni n tt nghip- h s iu chnh ph thuc vo chiu rng phay1 rdk- h s ph thuc vo gc nghing chnh1 nckVy( ) ph m k k k k k k V Vnc rd bm hk b c b/ 208 1 . 1 . 8 , 0 . 1 . 1 . 204 . . . . . S vng quai ca my l.( ) ph vgdvn / 662120 . 14 , 3208 . 1000.1000 i chiu vi thuyt minh my ta chn ( ) ph vg nm/ 600 Tnh li vn tc ct thc l.( ) ph mn dvm/ 4 , 1881000600 . 100 . 14 , 31000. . d, Tnh SP v SzthSP=Sz.n.Z=0,08.600.10=480mm/phTheo thuyt minh my ta chn SPT=475mm/phVy( ) rg mmZ nSSptz/ 079 . 010 . 600475. d)Nghim cng sut.Tra bng 5-129 s tay CNCTM T2 ta c.( ) kw Ncg6 , 1 i chiu vi thuyt minh my ta thy ( ) kw N Ndc cg25 , 5 75 , 0 . 7 . < Vy ch ct chn trn l hp l.e)Tnh thi gian gia cng l.phmSL L LT2 1 + +Trong . L1=( ) tgtB D D + 2 25 , 0 =( ) ( ) mmtg1560268 100 100 5 , 02 2 + L2=3mmVy( ) ph Tm244 , 14753 15 573+ +BcMyDao n(vg/ph)t(mm) S(mm/rgTmPhay th6H12 BK8 375 3 750 3,24Phay tinh6H12 BK8 600 1 475 2,4Lp LT CH C Kh1-K3 Khoa C Kh68Trng i Hc Cng Nghip H Ni n tt nghip3.Nguyn cng III: phay b mt trt A ca chi tit 3.1. Bn v s nguyncn3.2. Phn tch nguyn cng:a.Mc chy l nhng b mt lm vic ch yu ca m tnh v vy b mt gia cng cn t bng v chnh xc.Lp LT CH C Kh1-K3 Khoa C Kh69Trng i Hc Cng Nghip H Ni n tt nghipb.nh v S dng g kp cht gm 2 phin t nh v mt y 3 bc t do,v1 cht t mt u nh v 1 bc t do.2 cht mt bn nh v 2 bc t do .c.Kp cht Dng c cu kt chuyn dng v c th tho lp nhanh chi tit trong qu trnh gia cng hng lot .d.My Da vo yu cu ca b mt gia cng cn t l Rz40 do ta chn my phay ng 6H12 c:Cng sut ng c7kwHiu sut my75 . 0 Khong cch t mt nt ca trc chnh ti bn my l ) ( 400 30 mm Kch thc lm vic ca bn my:Rng 320mmDi 1250mmDch chuyn ln nht ca bn my;Dc 700mmNgang 160mmThng ng 370mme.Dao Da vo bng 494 (s tay CNCTM T1) chn dao phay mt u rng chp mnh HKC BK8 c: D = 100, Z =10 , =600 = -100 Da vo bng 5-127(s tay CNCTM T2)Chn tui bn dao l T=120(pht) f.Dng c o- Thc cp 1/50g. Bc th 3/73.3: Ch ct:*Bc 1: Phay th: a. Chiu su ct: Lp LT CH C Kh1-K3 Khoa C Kh70Trng i Hc Cng Nghip H Ni n tt nghipt =3 (mm) b. Lng chy dao. Theo bng 5-146 ( S tay CNCTM (tp 2))chn SZ = 0,1( mm/ rng ) Tra bng 5-125 s tay CNCTM T2 ta c.( ) vg mm Sz/ 24 . 0 2 . 0 an ton ta nhn vi cc h s iu chnh sau.- h s iu chnh ph thuc vo cch g lp dao phay 1 glk- h s iu chnh ph thuc vo gc nghing chnh1 nckm ( ) rg mm k S Sdc z z/ ) 24 . 0 2 . 0 ( 1 . 1 ). 24 . 0 2 . 0 ( . do chi tit c v cng nn ta chn Sz=0.2 (mm/rg)c. Vn tc ct.Tra bng 5-127 s tay CNCTM T2 ta c.Vb=204 (m/ph) an ton ta nhn vi cc h s iu chnh sau.- h s iu chnh ph thuc vo cng ca gang 1 ck- h s iu chnh ph thuc vo chu k bn ca dao 1 bk- h s iu chnh ph thuc vo mc hp kim cng 8 . 0 hkk- h s iu chnh vo trng thi b mt gia cng8 . 0 bmk - h s iu chnh ph thuc vo chiu rng phay1 rdkVy( ) ph m k k k k k V Vrd bm hk b c b/ 56 . 130 1 . 8 , 0 . 8 , 0 . 1 . 1 . 204 . . . . S vng quai ca my l.( ) ph vgdvn / 79 , 415100 . 14 , 356 , 130 . 1000.1000 i chiu vi thuyt minh my ta chn ( ) ph vg nm/ 375 Tnh li vn tc ct thc l.( ) ph mn dvm/ 75 , 1171000375 . 100 . 14 , 31000. . d, Tnh SP v SzthSP=Sz.n.Z=0,2.375.10=750mm/phTheo thuyt minh my ta chn SPT=750mm/phVy( ) rg mmZ nSSptz/ 2 . 010 . 375750. d. Bc tin ca bn my:Sp = nt .Z. Sz =750.5.0,1 = 3755 (mm/p)Chn theo thuyt minh my 6H12 chn: Sp = 375 (mm/p)Lp LT CH C Kh1-K3 Khoa C Kh71Trng i Hc Cng Nghip H Ni n tt nghipLng tin dao rng thc t :Sz=5 . 19095.Z nStp=0,1(mm/rng)e. Lc ct PZ: p dng cng thc: Pz=. . . ...x y upMP qCt S B ZKDn -Trong h s CP v cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68,20,860,721 0,7860- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Kp=KMP=17501]1

vnB (do B= 750) Pz=0 786 , 01 72 , 0 86 , 0190 . 205 . 100 . 1 , 0 . 5 , 2 . 2 , 68=1356,3(KG)f. Cng sut ct gt: Tra bng 5-129 s tay CNCTM T2 ta c.( ) kw Ncg6 . 4 i chiu vi thuyt minh my ta thy, my lm vic an ton Vy m bo s an ton khi ct gt g . Thi gian chy my :Tm = iSL L Lp.2 1 + + pht L =573 mm L1=0,5.( ) D D B 2 2+(0,53)=0,5.) 20 20 100 (2 2 +(0,5-3)= 36,4 mmL2= 1-6 mm chn L2=4 mm Lp LT CH C Kh1-K3 Khoa C Kh72Trng i Hc Cng Nghip H Ni n tt nghipS lt ct i = 4 Vy Tm=7504 4 , 36 441 + +.4 = 2,56pht -Ta phay nhiu ln t kch thc vi cng ch ct nh tnh ton trn*Bc 2: Phay tinh:e)Chiu su ct.t= 7-6=1mmf) Lng tin dao.Tra bng 5-125 s tay CNCTM T2 ta c.( ) rg mm S / 8 . 0 5 . 00 Ta chn S0=0.8(mm/rg)m( ) rg mmZSSz/ 08 , 0108 , 00 g)c, Tc ct (m/ph)Tra bng 5-127 s tay CNCTM T2 ta c.Vb=260 (m/ph) an ton ta nhn vi cc h s iu chnh sau.- h s iu chnh ph thuc vo cng ca gang 1 ck- h s iu chnh ph thuc vo chu k bn ca dao 1 bk- h s iu chnh ph thuc vo mc hp kim cng 8 . 0 hkk- h s iu chnh vo trng thi b mt gia cng1 bmk - h s iu chnh ph thuc vo chiu rng phay1 rdk- h s ph thuc vo gc nghing chnh1 nckVy( ) ph m k k k k k k V Vnc rd bm hk b c b/ 208 1 . 1 . 8 , 0 . 1 . 1 . 204 . . . . . S vng quai ca my l.( ) ph vgdvn / 662100 . 14 , 3208 . 1000.1000 i chiu vi thuyt minh my ta chn ( ) ph vg nm/ 600 Tnh li vn tc ct thc l.( ) ph mn dvm/ 4 , 1881000600 . 100 . 14 , 31000. . d, Tnh SP v SzthSP=Sz.n.Z=0,08.600.10=480mm/phTheo thuyt minh my ta chn SPT=475mm/phVy( ) rg mmZ nSSptz/ 079 . 010 . 600475. h)Nghim cng sut.Lp LT CH C Kh1-K3 Khoa C Kh73Trng i Hc Cng Nghip H Ni n tt nghipTra bng 5-129 s tay CNCTM T2 ta c.( ) kw Ncg6 , 1 i chiu vi thuyt minh my ta thy ( ) kw N Ndc cg25 , 5 75 , 0 . 7 . < Vy ch ct chn trn l hp l.e)Tnh thi gian gia cng l.phmSL L LT2 1 + +Trong . L1=( ) tgtB D D + 2 25 , 0 =( ) ( ) mmtg1560268 100 100 5 , 02 2 + L2=3mmVy( ) ph Tm96 , 04753 15 441+ +BcMyDao n(vg/ph)t(mm) S(mm/rgTmPhay th6H12 BK8 375 3 750 2,56Phay tinh6H12 BK8 600 1 475 1,24. nguyn cng IV:Phay 2 mt vu rnh kp v 4 rnh kp bt c bn my ca m tnh4.1: S nguyn cng:Lp LT CH C Kh1-K3 Khoa C Kh74Trng i Hc Cng Nghip H Ni n tt nghipP18t (mm) S (mm/rng) n (v/p) Dao My B c374 0,13 2,5 6H12 Phay thv(m/p)0,528nLp LT CH C Kh1-K3 Khoa C Kh75Trng i Hc Cng Nghip H Ni n tt nghip4.2: Phn tch nguyn cng:a. Mc ch Gia cng 4 mt vu bt vt bn my . bng cn t RZ 20. b. nh v S dng g kp cht gm 2 phin t nh v mt y 3 bc t do,v1 cht t mt u nh v 1 bc t do.2 cht mt bn nh v 2 bc t do . c. Kp cht Dng c cu kp cht chuyn dng nhhnh v.d. Mymbonngsut vchnhxctadngmyphay 6H12NM = 7 KW, hiu sut = 0.75 ]N = 7 0.75 = 5.25 (kw).e. Dao: - Chn dao: Dao phay ngnP18 , ng knh dao D =18.4.3 ch ct :*B c 1: Phay th hai vu ca mt bn-Chiu su ct t = 2 (mm) - Lng chy daoSz = 0,13 mm/ rng (Bng 5-146 STayCNCTM 2 ) .- Sp=Sz.n.z=0,13.600.10= 780mm/phtTheo thuyt minh my chn S=750mm/pht-Tc ct Vb=53 (m/pht) (Bng 5-147STayCNCTM 2 ) .H s iu chnh: Ws = 0,87 Tc ct tnh ton l:Vt =Vb. Ws = 53.0,87 =46,11m/phtS vng quay ca trc chnh theo tnh ton l:

ph vgDVntt/ 73418 . 14 , 311 , 46 . 1000.. 1000

Ta chn s vng quay theo my nm=600 vg/ph.Nh vy tc ct thc t l:Lp LT CH C Kh1-K3 Khoa C Kh76Trng i Hc Cng Nghip H Ni n tt nghipph mn DVmtt/ 912 , 331000600 . 18 . 14 , 31000. . Cng sut ctNo=1,3 KW (Bng 5-151STayCNCTM 2 ). No< Nm.=7.0,75=5,25KWTnh thi gian gia cng l.phmSL L LT2 1 + +Trong . L1=( ) tgtB D D + 2 25 , 0 =( ) ( ) mmtg1560268 100 100 5 , 02 2 + L2=3mm- S lt ct i=1Vy( ) ph Tm13 , 07503 15 80+ +*B c 2: Phay th 4 rnh bt bu lng-Chiu su ct t = 2.5 (mm) s- Lng chy daoSz = 0,13 mm/ rng (Bng 5-146 STayCNCTM 2 ) .- Sp=Sz.n.z=0,13.600.10= 780mm/phtTheo thuyt minh my chn S=750mm/pht-Tc ct Vb=53 (m/pht) (Bng 5-147STayCNCTM 2 ) .H s iu chnh: Ws = 0,87 Tc ct tnh ton l:Vt =Vb. Ws = 53.0,87 =46,11m/phtS vng quay ca trc chnh theo tnh ton l:

ph vgDVntt/ 73418 . 14 , 311 , 46 . 1000.. 1000

Ta chn s vng quay theo my nm=600 vg/ph.Nh vy tc ct thc t l:ph mn DVmtt/ 912 , 331000600 . 18 . 14 , 31000. . Cng sut ctNo=1,3 KW (Bng 5-151STayCNCTM 2 ). No< Nm.=7.0,75=5,25KWTnh thi gian gia cng l.Lp LT CH C Kh1-K3 Khoa C Kh77Trng i Hc Cng Nghip H Ni n tt nghipphmSL L LT2 1 + +Trong . L1=( ) tgtB D D + 2 25 , 0 =( ) ( ) mmtg1560268 100 100 5 , 02 2 + L2=3mm- S lt ct i=10Vy( ) ph Tm3 , 17503 15 80+ +5.NGUYN CNG V : PHAY 2 mt trt bn pha ngoi b,c5.1: S nguyn cng:Lp LT CH C Kh1-K3 Khoa C Kh78Trng i Hc Cng Nghip H Ni n tt nghip11616nP18t (mm)S (mm/vng) n (v/p) Dao My B cP18190 95 2,5375 150 0,56H12 Phay thPhay tinh6H12v(m/p) T (Pht)23,553,211,935,06Lp LT CH C Kh1-K3 Khoa C Kh79Trng i Hc Cng Nghip H Ni n tt nghip5.2: Phn tch nguyn cng:a. Mc ch- Gia cng 2 mt trt bn y l b mt lm vic ca t. v vy b mt gia cng cn t bng v chnh xc.-Giacnghai mt bncanatnhlmchungia cng cc nguyn cng sau . bng cn t RZ 20. b. nh v 1 cht tr mt u hn ch 1 bc t do.S dng2 phin t mt y hn ch 3 bc t do, 2 cht mt bn hn ch 2 bc t do c. Kp cht Dng c cu kp cht chuyn dng nhhnh v.d. Mymbonngsut vchnhxctadngmyphay 6H12 cNM = 7 KW, hiu sut = 0.75 ]N = 7 0.75 = 5.25 (kw).e. Dao: Dng dao phay ngn thp gi P18, Ddao=20 mm,Z =5 (rng),T=60 ( pht ). f. Dng c o:- Thc cp 1/50g. Bc th 3/75.3: Ch ct :*Bc 1: Phay th: a. Chiu su ct: Lp LT CH C Kh1-K3 Khoa C Kh80Trng i Hc Cng Nghip H Ni n tt nghipt =2,5 (mm) b. Lng chy dao. Theo bng 5-146 ( S tay CNCTM (tp 2))chn SZ = 0,1( mm/ rng )c. Vn tc ct.Vn tc ct c tnh theo cng thc V=... . . .qvv m x y u pCDKT t S B Z-H s CV v mu tra bng 5-39(s tay CNCTM tp 2 ) ta cCVq m x y u p46,70,450,330,5 0,50,1 0,1-H s iu chnh chung cho ta h s ct KV=KMV.KNV.KUV.-H s iu chnh ph thuc vo cng ca gang tra bng 5-1 (s tay CNCTM (tp 2)) :KMV = Kn.17501]1

vnB (do B= 750,v Kn=1)-H s iu chnh ph thuc vo trng thi b mt gia cng Tra bng 5-5 (S tay CNCTM (tp 2)): K NV =0,80.85. Chn K NV = 0,8 -H s iu chnh ph thuc vo mc hp kim cng KUV Tra bng 5- 6 ( S tay CNCTM ( tp 2)): KUV= 0.3=> Kv= 1.0,8.0.3= 0.24-S rng dao:Z = 4 (rng)-ng knh dao:D = 20 (mm)Lp LT CH C Kh1-K3 Khoa C Kh81Trng i Hc Cng Nghip H Ni n tt nghip-Tui bn dao:T = 60 (pht )-Chiu su ct:t = 2.5 (mm)-B rng ln nht mt gia cng:B = 441 (mm)-Lng chy dao:SZ =0,1 (mm/ rng)V= 24 , 0 .4 . 441 . 1 , 0 . 5 , 2 . 6020 . 7 , 461 , 0 1 , 0 5 , 0 5 , 0 33 , 045 , 0=23(m/p) =>n=20 . 14 , 323 . 1000=366,2(vng/pht)Chn theo thuyt minh my 6H12 ly: n(t) = 375 (v/p) Tnh thc t:ph mn DVmtt/ 55 , 231000375 . 20 . 14 , 31000. . d. Bc tin ca bn my:Sp = nt .Z. Sz =375.4.0,1 = 150 (mm/p)Chn theo thuyt minh my 6H12 chn: Sp = 150 (mm/p)Lng tin dao rng thc t :Sz=5 . 19095.Z nStp=0,1(mm/rng)e. Lc ct PZ:p dng cng thc: Pz=. . . ...x y upMP qCt S B ZKDn-Trong h s CP v cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68,20,860,721 0,7860- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Lp LT CH C Kh1-K3 Khoa C Kh82Trng i Hc Cng Nghip H Ni n tt nghipKp=KMP=17501]1

vnB (do B= 750) Pz=0 786 , 01 72 , 0 86 , 0190 . 205 . 100 . 1 , 0 . 5 , 2 . 2 , 68=1356,3(KG)f. Cng sut ct gt:Nc=60 . 10293 , 11 . 3 , 135660 . 102.V Pz=2,64(KW)Theo thuyt minh ca my ,my lm vic an ton Vy m bo s an ton khi ct gt g . Thi gian chy my :Tm = iSL L Lp.2 1 + + pht L =441 mm L1=0,5.( ) D D B 2 2+(0,53)=0,5.) 20 20 100 (2 2 +(0,5-3)= 36,4 mmL2= 1-6 mm chn L2=4 mm S lt ct i = 4 Vy Tm=1504 4 , 36 441 + +.4 = 3,2 ht*Bc 2: Phay tinh:a.Chiu su ct :t =1 (mm)b.Lng tin dao:Trabng5-146(StayCNCTM(tp2)):chn: SZ=0.1 (mm/rng)c. Vn tc ct.Vn tc ct c tnh theo cng thc V=... . . .qvv m x y u pCDKT t S B ZLp LT CH C Kh1-K3 Khoa C Kh83Trng i Hc Cng Nghip H Ni n tt nghip-H s CV v mu tra bng 5-39 (s tay CNCTM tp 2) ta cCVq m x y u p46,70,450,330,5 0,5 0,1 0,1V= 24 , 0 .5 . 100 . 1 , 0 . 5 , 0 . 6020 . 7 , 461 , 0 1 , 0 5 , 0 5 , 0 33 , 045 , 0=26,84 (m/p)=>n=20 . 14 , 384 , 26 . 1000=427,38(vng/pht)Theo thuyt minhmy 6H12 ly : n(t) = 375 (v/p) Tnh thc t: Vt=1000375 . 20 . 14 , 31000. .n D =23,55 (m/p)d.Bc tin ca bn my :Sp =nt .Z.SZ= 375.5 .0,1 =187,5 (mm/p) -Theo thuyt minhmy chn Sp =150(mm/p)Lng tin dao rng thc t :Sz=5 . 375150.Z nStp=0,08(mm/rng)e.Lc ct PZ:Pz=. . . ...x y upMP qCt S B ZKDn-Trong h s CP v cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68,20,860,721 0,7860Lp LT CH C Kh1-K3 Khoa C Kh84Trng i Hc Cng Nghip H Ni n tt nghip- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Kp=KMP= 17501]1

vnB (do B= 750) Pz=0 786 , 01 72 , 0 86 , 0375 . 205 . 100 . 1 , 0 . 5 , 0 . 2 , 68=289,39(KG)f. Cng sut ct gt:Nc=60 . 10255 , 23 . 39 , 28960 . 102.V Pz=1,27(KW)Ta thy Ne Kv= 1.0,8.0.3= 0.24-S rng dao:Z = 4 (rng)Lp LT CH C Kh1-K3 Khoa C Kh88Trng i Hc Cng Nghip H Ni n tt nghip-ng knh dao:D = 20 (mm)-Tui bn dao:T = 60 (pht )-Chiu su ct:t = 2.5 (mm)-B rng ln nht mt gia cng:B = 441 (mm)-Lng chy dao:SZ =0,1 (mm/ rng)V= 24 , 0 .4 . 441 . 1 , 0 . 5 , 2 . 6020 . 7 , 461 , 0 1 , 0 5 , 0 5 , 0 33 , 045 , 0=23(m/p) =>n=20 . 14 , 323 . 1000=366,2(vng/pht)Chn theo thuyt minh my 6H12 ly: n(t) = 375 (v/p) Tnh thc t:ph mn DVmtt/ 55 , 231000375 . 20 . 14 , 31000. . d. Bc tin ca bn my:Sp = nt .Z. Sz =375.4.0,1 = 150 (mm/p)Chn theo thuyt minh my 6H12 chn: Sp = 150 (mm/p)Lng tin dao rng thc t :Sz=5 . 19095.Z nStp=0,1(mm/rng)e. Lc ct PZ:p dng cng thc: Pz=. . . ...x y upMP qCt S B ZKDn-Trong h s CP v cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68,20,860,721 0,7860Lp LT CH C Kh1-K3 Khoa C Kh89Trng i Hc Cng Nghip H Ni n tt nghip- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Kp=KMP=17501]1

vnB (do B= 750) Pz=0 786 , 01 72 , 0 86 , 0190 . 205 . 100 . 1 , 0 . 5 , 2 . 2 , 68=1356,3(KG)f. Cng sut ct gt:Nc=60 . 10293 , 11 . 3 , 135660 . 102.V Pz=2,64(KW)Theo thuyt minh ca my ,my lm vic an ton Vy m bo s an ton khi ct gt g . Thi gian chy my :Tm = iSL L Lp.2 1 + + pht L =441 mm L1=0,5.( ) D D B 2 2+(0,53)=0,5.) 20 20 100 (2 2 +(0,5-3)= 36,4 mmL2= 1-6 mm chn L2=4 mm S lt ct i = 4 Vy Tm=1504 4 , 36 441 + +.4 = 3,2 ht*Bc 2: Phay tinh:a.Chiu su ct :t =1 (mm)b.Lng tin dao:Trabng5-146(StayCNCTM(tp2)):chn: SZ=0.1 (mm/rng)c. Vn tc ct.Lp LT CH C Kh1-K3 Khoa C Kh90Trng i Hc Cng Nghip H Ni n tt nghipVn tc ct c tnh theo cng thc V=... . . .qvv m x y u pCDKT t S B Z-H s CV v mu tra bng 5-39 (s tay CNCTM tp 2) ta cCVq m x y u p46,70,450,330,5 0,5 0,1 0,1V= 24 , 0 .5 . 100 . 1 , 0 . 5 , 0 . 6020 . 7 , 461 , 0 1 , 0 5 , 0 5 , 0 33 , 045 , 0=26,84 (m/p)=>n=20 . 14 , 384 , 26 . 1000=427,38(vng/pht)Theo thuyt minhmy 6H12 ly : n(t) = 375 (v/p) Tnh thc t: Vt=1000375 . 20 . 14 , 31000. .n D =23,55 (m/p)d.Bc tin ca bn my :Sp =nt .Z.SZ= 375.5 .0,1 =187,5 (mm/p) -Theo thuyt minhmy chn Sp =150(mm/p)Lng tin dao rng thc t :Sz=5 . 375150.Z nStp=0,08(mm/rng)e.Lc ct PZ:Pz=. . . ...x y upMP qCt S B ZKDn-Trong h s CP v cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68, 0,8 0,7 1 0,78 0Lp LT CH C Kh1-K3 Khoa C Kh91Trng i Hc Cng Nghip H Ni n tt nghip2 6 2 6- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Kp=KMP= 17501]1

vnB (do B= 750) Pz=0 786 , 01 72 , 0 86 , 0375 . 205 . 100 . 1 , 0 . 5 , 0 . 2 , 68=289,39(KG)f. Cng sut ct gt:Nc=60 . 10255 , 23 . 39 , 28960 . 102.V Pz=1,27(KW)Ta thy Ne Theo TMM n=90 v/p8. NGUYN CNG VIII : phay mt lp ghp m kp e8.1: s nguyn cngLp LT CH C Kh1-K3 Khoa C Kh97Trng i Hc Cng Nghip H Ni n tt nghipn132P18t (mm)S (mm/vng) n (v/p) Dao My B cP1837 118 2,560 60 0,56H12 Phay thPhay tinh6H12v(m/p) T (Pht)42,391,98926Lp LT CH C Kh1-K3 Khoa C Kh98Trng i Hc Cng Nghip H Ni n tt nghip8.2: Phn tch nguyn cng:a. Mc chGiacngmt btvtmkpmboyuculp ghp v m bo vung gc mt trt t . bng cn t RZ 40. b. nh v S dng phin t hn ch 3 bc t do, 2cht tr mt bn hn ch 2 bc t do, 1 cht tr mt u hn ch 1 bc t do c. Kp cht Dng c cu kp cht chuyn dng nhhnh v.d. Mymbonngsut vchnhxctadngmyphay ngang6H82cNM = 7 KW, hiu sut = 0.75 ]N = 7 0.75 = 5.25 (kw).e. Dao: Dng dao phay a 3 mt rnggn mnh thp gi P18, D=150 mm, Z =22 (rng) B =2,5 ;T=60 ( pht ).f. Dng c o:- Thc cp 1/20g. Bc th 3/7 h.ch ct :*B c 1: Phay th.Chiu su ct t =2,5 mm .Lp LT CH C Kh1-K3 Khoa C Kh99Trng i Hc Cng Nghip H Ni n tt nghipLng chy dao rng Sz=0,18 mm/rng (Bng 5-170 STayCNCTM 2 ) Lng chy dao vng S0= 0,18. 22= 3,96 mm/vng.Tc ct Vb=24,5 m/ph (Bng 5-171STayCNCTM 2 ) .S vng quay ca trc chnh l: ph vgDVntt/ , 52150 . 14 , 35 , 24 . 1000.. 1000

Ta chn s vng quay theo my nm=45 vng/pht.Nh vy tc ct thc t l:ph mn DVttt/ 195 , 21100045 . 150 . 14 , 31000. . VyBc tin ca bn my:Sp = nt .Z. Sz =37.22.0,18 = 146,5 (mm/p)Theo thuyt minh my chn Sp =118 (mm/p)Cng sut ctNo=2,5 KW (Bng 5-174 STayCNCTM ) . No< Nm.=7.0,75 =5,25KWg . Thi gian chy my :Tm = iSL L Lp.2 1 + + pht -L =180 mm -Theo bng 31 (TKDACNCTM ) i vi dao phay aL1= ( )( t D t + (0,5 3 )= ( ) 100 130 .( 100 +2 = 54,77 mmL2= ( 2-5 ) mm chn L2=4 mm S lt ct i = 2 Vy Tm=2 .1504 77 , 54 180 + += 3,18 pht Lp LT CH C Kh1-K3 Khoa C Kh100Trng i Hc Cng Nghip H Ni n tt nghip*B c 2:(phay tinh vi Rz = 20)Chiu su ct t =0,5 mm , lng chy dao vng S0=1,2 mm/vng (Bng 5-37 STay CNCTM 2 ) . Sz = So/z =1,2/22 =0,054 mm/rngTc ct Vb=34 m/ph (Bng 5-171STayCNCTM 2 ) .S vng quay ca trc chnh l:

ph vgDVn / 18 , 72150 . 14 , 334 . 1000.. 1000 Ta chn s vng quay theo my nm=60 vg/ph.Nh vy tc ct thc t l: ph mn DVtt/ 26 , 28100060 . 150 . 14 , 31000. . d. Bc tin ca bn my:Sp = nt .Z. Sz =60.22.0,054 = 71,28 (mm/p)Chn theo thuyt minh my 6H82 chn: Sp = 60 (mm/p)Lng tin dao rng thc t :Sz=22 . 6060.Z nStp=0,045(mm/rng) Cng sut ctNo=1,2 KW (Bng 5-174 STayCNCTM ) . No< Nm.=7.0,75 =5,25KWg . Thi gian chy my :Tm = iSL L Lp.2 1 + + pht -L =180 mm -Theo bng 31 (TKDACNCTM ) i vi dao phay aLp LT CH C Kh1-K3 Khoa C Kh101Trng i Hc Cng Nghip H Ni n tt nghipL1= ( )( t D t + (0,5 3 )= ( ) 100 130 .( 100 +2 = 54,77 mmL2= ( 2-5 ) mm chn L2=4 mm S lt ct i = 1 Vy Tm=1 .1504 77 , 54 180 + += 1,59 pht 9. NGUYN CNG VIII:khoan ta r 2 l bt vt m kp m89.1: s nguyn cngLp LT CH C Kh1-K3 Khoa C Kh102Trng i Hc Cng Nghip H Ni n tt nghipP18 750 0,15 3,25t (mm) S (mm/vng) n (v/p) Dao My B c275 0,15 0,752A135 KhoanTa r2A135 P18v (mm/p)T (pht)6,90,61715,30,16Lp LT CH C Kh1-K3 Khoa C Kh103Trng i Hc Cng Nghip H Ni n tt nghip9.2: Phn tch nguyn cng:*Bc 1 : khoan taro 2 l M8a. Mc ch:Khoan v taro hail M8 to ren bt m kp kp chi tit m ng vi m tnh b. nh v :S dng phin t nh v mt y hn ch c 3 bct do. Dng 3 cht tr ngn nh v vo mt bn v mt u hn ch 3 bc t do.c. Kp cht: Dng c cu kt cht chuyn dng nh hnh v.d. My:Nguyncngcthchintrnmykhoan2A135vi cng sut ng c NM = 7 KW, hiu sut = 0.75 ]N = 7 0.75 = 5.25 (kw e. Dao: S dng mi khoan thp gi ui cn, D = 6,5 mm S dng mi taro M8.f. Dng c o:- Thc cp 1/50- Bulong th M8.g. Bc th 3/7Ch ct :a. Chiu su ct :Lp LT CH C Kh1-K3 Khoa C Kh104Trng i Hc Cng Nghip H Ni n tt nghipt = 2D =25 , 6 = 3,25 mmb. Lng chy dao :Trabng8-3(CCGCCK) vi mi khoancngknhd=6,5 mm cS2= (0,18 0,22) mm/v ,chn S2= 0,2 mm Chn Smin=S2=0,2 mm/v Theo thuyt minh my chn S = 0,15 mm/v c. Vn tc ct khi khoan :Theo cng thc V = .. .v vZvvv x y mCDkT t STheo bng 3-3 (CCGCCK)Cv Zv xv yv m14,7 0,2500550,125Tra bng 4-3 (CCGCCK) ta c : T = 50H s iu chnh chung cho tc ct :Kv=Km.Kl.Kn.KuTheo bng 5-3(CCGCCK) ta c : Km=1Theo bng 6-3(CCGCCK) ta c : Kl=1Theo bng 7-1 (CCGCCK)ta c : Kn= 0,95 Theo bng 8-1(CCGCCK) ta c : Ku=1 Kv=1.1.0,95.1 =0,95 Thay vo cng thc ta c :V =4 , 0 0 125 , 025 , 015 , 0 . 25 , 3 . 505 , 6 . 7 , 14 = 18,24 m/p Tc trc chnh : n = DV.. 1000=5 , 6 . 14 , 324 , 18 . 1000 = 298 v/p Lp LT CH C Kh1-K3 Khoa C Kh105Trng i Hc Cng Nghip H Ni n tt nghipTheo thuyt minh my chn : nm= 275 v/p Lc ny tc ct thc t l :Vtt= 1000. . n D = 1000750 . 5 , 6 . 14 , 3= 9,3 m/p d. Lc ct - M men xon *khoan :P0= Cp.DZp.SYp.KmpM=CM.DZm.SYm.KMTheo bng 7-3 (CCGCCK)CM ZMYM Cp Zp Yp0,021 20,842,7 10,8Theo bng (12-1)v (13 -1 )(CCGCCK) KMp=1190pnHB _ ,

Theo bng 12-1 (CCGCCK)KMp= 1190pnHB _ ,Theo bng 13-1(CCGCCK) ta c : np= 1 Kp=1 Thay vo cng thc :Po = 42,7.6,51,0.0,150,8.1 = 60,8 KGM= 0,021.6,52,0.0,150,8.1 = 0,19 KG So snh lc cho php [P0] thuyt minh , my lm vic m bo an ton e. Cng sut ct khi khoan N = 975.n M=975750 . 19 , 0 = 0,14 KW Lp LT CH C Kh1-K3 Khoa C Kh106Trng i Hc Cng Nghip H Ni n tt nghipSo vi cng sut my [N] = 6.0,8 = 4,8 KW , my lm vic m bo an ton f. Thi gian chy my Tm= 1..L LiS n+ pht L =15 mm L1=3 mm Vy Tm=275 . 15 ,3 15O+.2 = 0,86 pht *B c 2 : taro 2 l M8a. Dng c ct :S dng b ta r mi M8b. My : Quay tay khi taroc. Dng c o : Vtth M8d. Bc th : 3/7 2.1Ch ct a . Chiu su ct t = 2 d D =25 , 6 8 = 0,75 mmb . Lng chy dao Trabng8-3(CDCGCCK) tacS=(0,270,33) chnS=0,3 mm/v ,v sau khikhoan ta taro ta cn nhn vih s 0,5 S= 0,3.0,5 =0,15 mm /vc . Vn tc ct V = Vb.k ( m/p) Tra bng 5-188(S tay CNCTM tp 2) ta c : Lp LT CH C Kh1-K3 Khoa C Kh107Trng i Hc Cng Nghip H Ni n tt nghipVb=10 mm/p v h s k=0,8 V=10 . 0,8 = 8 m/pf. Thi gian chy my Tm= in SL L L..2 1

,_

+ +n : S vng quay ca dao khi tho ta r , ly n1=20 v/p i : S lng ta r ; i = 2 L1=(1 3)bc ren Ly L1=2.p =2.0,75 = 1,5 mmL2= 0 (v ren l khng thng sut)L = 12mmVy : Tm=1 , 5 2 .20 . 15 , 02 5 , 1 121 ,_

+ + pht 10. NGUYN CNG X : MI MT PHNG SNG TRT10.1: s nguyn cngLp LT CH C Kh1-K3 Khoa C Kh108Trng i Hc Cng Nghip H Ni n tt nghip16012,5 0,03 0,2t (mm)S (mm/ht) V (m/p) My B c3A732Mi phngLp LT CH C Kh1-K3 Khoa C Kh109Trng i Hc Cng Nghip H Ni n tt nghip10.2: Phn tch nguyn cng a.nh v: Chun nh v l mt y. nh v trn bn t ca my mi, hn ch c 3 bc t do v hai phin t phng chn 2 u.lc kp bng lc t ht cht chi tit vi 2 phin t thnh mt khi vng chc c nh. b. Chn my: My mi phng 3A732 ca lin bang Nga. Cng sut ca my Nm = 14(Kw)c.Chn : chn mi phng vi cc kch thc D = 300 (ng knh )H = 50 (chiu dy )D =50 (ng knh l ) ( Bng 4.93-trang 432-S tay gia cng c) d.Lng d gia cng: Zb = 0,2 mm. 10.3: Ch ct: a. Chiu su ct:t =0,2(mm).b.Lng chy dao:: S = 0,03 (mm/h.t) (bng 5-219trang 195 STCN t2).c. Tc ct: V= 12,5(m/ph).11. NGUYN CNG XI : KIM TRA SONG SONG GIA TM L 20 VI MT PHNG TRt a . khng vung gc gia mt phng trt A v mt phng bt m kp F11.1: s nguyn cngLp LT CH C Kh1-K3 Khoa C Kh110Trng i Hc Cng Nghip H Ni n tt nghip?N T? T NGHI?P THI?T K? QUY TRNH CNG NGH? GIA CNG M TINH C? A T TH? Y L? CTr.Nhi?m H? v TnNguy?n Son ?nhNguy?n Son ?nhCh? K Ngy/Thng T? l?: Kh?i Lu?ngS? T?: 2T? s?: 1Tru?ng HCN H N?iKhoa Co KhL?p LT CHCK1_K3SO ?NGUYN CNGV?t li?u: C45Duy?tK.TraThi?t K?Lp LT CH C Kh1-K3 Khoa C Kh111Trng i Hc Cng Nghip H Ni n tt nghipb. lp quy trnh cng gia cng hm ng t.Lp LT CH C Kh1-K3 Khoa C Kh112Trng i Hc Cng Nghip H Ni n tt nghip I . Chc nng v iu kin lm vic ca chi tit 1 . Phn tch chc nng v iu kin lm vic ca chitit .Hmngetolmtmtbphncageto,Dng nh v vkpcht chi titkhigia cng. B mt lmvic ch yu ca chi tit l mt A, B v mt C l b mt dng trt m ng trn mt m tnh,vl 25 c tc dg lp bc ren to chuyn ng kp cht cho g.Lp LT CH C Kh1-K3 Khoa C Kh113Trng i Hc Cng Nghip H Ni n tt nghip2 . Phn tch tnh cng ngh trong kt cu ca chi tit .Hmngetolmtchi titchnhdngvktcu khng my phc tp , khi lng ca chi tit nh , tnh cng ngh va phi,cthgia cngbngcc dngc ct thngthng trn cc my gia cng truyn thng , ch to d dng , lng d gia cng khng ln , cc nguyn cng gia cng ch yu trn cc my phay , khoan v my mi phng . Tuy nhin ta cn ch mt s bc cng ngh chnh l gia cngmt A v mt B t bng Ra2,5 v m bo khng song song l 0,02/100mm, khng vung gc gia mt B v mt C l 0,02mm.Cc b mt gia cng cn lich cn t nhn bng l Rz20.3 . Phn tch yu cu k thut .Khi gia cng chi tit hm ngeto ta cn ch n mt s kch thc sau : - khng song gia mt A v mt B ,0.02/100 mm- khng vung gc gia mt C v mt B200kgSn lng hng nm ca chi titn chic < 100 < 10 < 5Lot nh100 500 10 200 55 100Lot va500 5000 200 500 100 300Lot ln5000 50000500 5000 300 1000Hng khi >50000 >5000 >1000116Trng i Hc Cng Nghip H Ni n tt nghipchiph ch to phil nh nht,lng dgia cng nh nht,to iu kin gia cng d dng em li hiu qu v nng sut cao nht. Nhn chung phi c xc nh hp l ph thuc vo lng d gia cng. Khi lngdgia cng c xcnh hp lc vtr sv dung sais gp phn bo m kinh t ca c qu trnh cng ngh. Chi tit Hm ngeto c lm t vt liu thp CT3 v vy c rt nhiu phng php ch to phi,nhng cho t hiu qu v kinh t v cng ngh.ta chn phng php c l hp l nht.a.c trong khun ct mu g.c p dng vi chi tit t nh ti ln,trong sn xut lot nh v lot va vi sn lng hng nm khng ln.Vi phng php ny m bo chnh xc cho phi th mu g phi oc ch to chnh xc v hm khun c nh v chnh xc. khc phc iu ny ngi ta c th lm khun bng my.Phng php ny c dung ph bin hin nay va kinh t v vic ch to khun n gin,nng sut v chnh xc ca phi l tng i.Trong qu trnh lm khun n m bo c ng nht v gim sai s do qu trnh lm khun gy lnb.c trong khun kim loiVi phngphpnythlngdnh,tit kimcnguyn liu,cchnhxc cao,tuynhingi thnhchtokhun cnghi cao,ph hpvi dngsnxut ln,lot khi,khngp dng vi chi tit c hnh dng phc tpc.c trong khunmu chyLp LT CH C Kh1-K3 Khoa C Kh117Trng i Hc Cng Nghip H Ni n tt nghip_Cchnhxc,lngdgiacngnh,cnhngbmt khng cn phigia cng .Lm theo phng php ny gi thnh gia cng chtokhuncaonnchp dng cho gia cng chi tit c cu to phc tp m cc phung php khc khng lm -c .d.c p lc_To ra phi,chi tit c hnh dng phc tp,kch thc nh.Kt lun: Cn c vo kt cu ca chi tit,vt liu,iu kin,kch th-c,khilng,yu cu k thut.Mt khc xt v mt kinh t sn xut c chi tit v dng sn xut ca chi tit ta chn phung php ch to phi l c trong khun ct mu g v khun c lm bng my m bo chnh xc. 2.Xc nh lng d gia cngLngdgiacngcxcnhtoiukinthunli trong vic tnh ton thit k mi nguyn cng tip theo. Lng d c xc nh hp l s gim gi thnh ch to phi, gim thi gian gia cng v c ngha kinh t rt ln i vi vic sn xut.Xc nh lng dgia cng c th bng kinh nghim,tra bng hay tnh ton chnh xc. V kinh nghim sn xut cn hn ch nn em chn phng php tnh lng d cho mt b mt v tra lng d cho cc b mt cn li. n gin v thun tin y em chn mt y ca Hm ngeto tnh lng d.Vt liu c k hiu CT3 Lng d nh nht c tnh theo cng thc:Lp LT CH C Kh1-K3 Khoa C Kh118Trng i Hc Cng Nghip H Ni n tt nghipmin =(Rz+h)i-1 +i-1 + i(2)Trong : RZ(i-1): chiu cao nhp nh t v do bc cng ngh st trc li. hi-1: chiu su lp h hng ca bc cng ngh st trc li.i-1: tng sai lch v v tr khng gian do bc cng ngh st trc li ( cong vnh, lch tm.)i: sai s gi t chi tit bc cng ngh ang thc hin.Phi c cp chnh xc II theo bng 3- 65 (S tay CNCTM-tp 1) cht lng b mt chi tit c t c l:+Chiu cao nhp nh t vi v chiu cao h hng: Rz +h =0.4 (mm)+ Sai lch v v tr khng gian: cong vnh ca phi thp vi chi tit c trong khun ct: CV =(0.31.5)chn JCV = 1.2. cong vnh l: 1,2 x 150=180m =0.18 (mm) xin:X = (310) x 52 =3 x 52 =156m =0,156 (mm) lch tm ca phi: JLT = (1,22) (mm)Chn: JLT =1.8 (mm)Sai lchkhnggiantngcngcaphi ctnhtheocng thc sau: i-1= 2 2 2cv x LT + + (3)Thay cc gi tr tm c vo (3) ta c :i-1 = 1,8 (mm)+ Sai s gi t chi tit: i= k2c2 +Lp LT CH C Kh1-K3 Khoa C Kh119Trng i Hc Cng Nghip H Ni n tt nghipc:Sai schunkhi git chi tit, chi titcnhv trn phin t c chun nh v trng chun o nn c=0k: Sai s kp cht ca chi tit c tra bng 23 (TK ACNCTM)Ta c: k =140 m = 0,14 mm + Lng d nh nht ca phay th l:thay cc gi tr c vo cng thc (2) ta c:min= 0,4 +1,8+0,14= 2,34 (mm) Sau bc phay th cht lng b mt t c Theobng12(TKACNCTM): saubcphaythcht lngb mt t c: RZ =100 m, Ti = 100mRZ +Ti = 100 + 100 = 200(m) = 0,2 (mm)Sai lch khng gian sau khi phay th:i =C + CM x dch ca phi:CM =D = 100(m) cong vnh ca phi:C =k .1 =0,7.100 =70 (m)Sai s gi t cn li bc phay tinh.

i = 0,2 .150 =30 (m) =0,03 (mm)Lng d nh nht khi phay tinhmin(Tinh) = (RZ +h)i-1 +i (4)Thay cc gi tr tm c vo (4) ta c :Zmin(Tinh) =0,2+0,18+0,03 =0,41(mm)Lng d tng cng khi phay tinh v phay th l:Z =2,54+0,41 = 2,95(mm) Vy ta ly lng d ca b mt B l 3 mmLp LT CH C Kh1-K3 Khoa C Kh120Trng i Hc Cng Nghip H Ni n tt nghipDa vo lng d ca mt y, tra bng 3-95 (S tay CNCTM-tp 1), ly lng d ca cc mt cn li nh sau :+mt A (mt trn ) l 5 mm+cc mt bn cn li l 4 mm- Ta c bn v lng phi Lp LT CH C Kh1-K3 Khoa C Kh121Trng i Hc Cng Nghip H Ni n tt nghipIv.xc nh ng li cng ngh . Trong sn xut hng lot ln, t nng sut cao trong sn xut nc ta th ng li cng ngh l phn tn nguyn cng. Khi s c t bc cng ngh hn trong mi Lp LT CH C Kh1-K3 Khoa C Kh122Trng i Hc Cng Nghip H Ni n tt nghipnguyn cng. Dng trong my vn nng kt hp vi g chuyn dng. Chn my cho qu trnh cng ngh thit k c thc hin sau khi thit k s b cc nguyn cng. Chn thit b trc ht phi da vo kh nng m do chnh xc kch th-c, hnh dng v cht lng b mt gia cng. Nu cc thng s k trn c th m bo bng mt s loi my, th chn loi my no s do cc yu t sau quyt nh : tng thch gia kch thc ca my vi kch thc ca chi tit gia cng theo s g t chn. tng thch v nng sut ca my so vi dng sn xut yu cu . Kh nng lm vic theo ch ct ti u. tng thch v cng sut ca my vi cng sut ct yu cu. Kh nng p dng cc gii php t ng ho khi thc hin nguyn cng trn my . Gi thnh gia cng l nh nht.V. chn phng php gia cng.Gia cng cc mt phng y , cc rnhv khoantaro c thc hin trn cc my vn nng s dng g chuyn dng. 3 . S nguyn cngNguyn cng 1: c phiNguyn cng 2: phay mt trnNguyn cng 3: Phay 2 mt uNguyn cng 4: Phay mt di v rnhLp LT CH C Kh1-K3 Khoa C Kh123Trng i Hc Cng Nghip H Ni n tt nghipNguyn cng 5: Khoan, khot doa l 30Nguyn cng 6: Khoan ta r 6 l M8 bt vt thanh np trtNguyn cng 7: khoan ta r 2 l bt vt m kp M8Nguyn cng 8: Khoan taro 2 l bt vt np bch m ng M8Nguyn cng 9: khoan 2 l cht nh v 5 Nguyn cng 10: phay mt phng trong l 30Nguyn cng 11: Mi mt di v rnhNguyn cng 12: kim tra vung gc gia mt A v B. song song gia l 30 vi mt BVI. tnh ton thit k cho cc nguyn cng1. Nguyn cngI: c phi1.1 S nguyn cng(Bn v)Lp LT CH C Kh1-K3 Khoa C Kh124Trng i Hc Cng Nghip H Ni n tt nghipnguyn cng i : c phi1.2:Phn tch nguyn cng:a. Mc ch .- Phi c phi m bo phn phi lng d cn thit gia cng t yu cu k thut ca bn v chi tit .- Lm sch ba via u rt, u ngt khi a vo gia cng.b. Yu cu k thut.Lp LT CH C Kh1-K3 Khoa C Kh125Trng i Hc Cng Nghip H Ni n tt nghip Chitit phi cn i v hnh dng ng thnh phn c tnhkhng b nt r, khng b cong vnh v c tp cht. Phi c t cp chnh xc 2.c.Dng c do : Thc cp 1/50 d.Bc th: 3/72.Nguyn cng II: phay MT LNG TRN (H)2.1: S nguyn cng :Lp LT CH C Kh1-K3 Khoa C Kh126Trng i Hc Cng Nghip H Ni n tt nghips72P18 300 240 3t (mm) S (mm/pht) n (v/p) Dao My B c6H12 Phay thv (m/p) T (pht)94,21Lp LT CH C Kh1-K3 Khoa C Kh127Trng i Hc Cng Nghip H Ni n tt nghip2.2:Phn tch nguyn cng :a. Mc ch:Gia cng mt trn to chun gia cng cc nguyn cng tip theo. bng cn t RZ 40. b. nh v :S dng phin t nh v mt B s hn ch c 3 bct do. Mtbn hn ch 1 bc t do .Mt D hn ch 2 bc t do c. Kp cht: Dng c cu g kp cht chuyn dng vi lc kp hng vo mt c chiu vung gc vi mtct gt. d.Dao Da vo bng 494 (s tay CNCTM T1) chn dao phay mt u rng chp mnh HKC BK8 c: D = 120, Z =10 , =600 = -100 Da vo bng 5-127(s tay CNCTM T2)Chn tui bn dao l T=120(pht) e.Dng c of.My Da vo yu cu ca b mt gia cng cn t l Rz40 do ta chn my phay ng 6H12 c:Cng sut ng c7kwHiu sut my75 . 0 Khong cch t mt nt ca trc chnh ti bn my l ) ( 400 30 mm Kch thc lm vic ca bn my:Rng 320mmDi 1250mmDch chuyn ln nht ca bn my;Dc 700mmNgang 160mmThng ng 370mm- Thc cp 1/50Lp LT CH C Kh1-K3 Khoa C Kh128Trng i Hc Cng Nghip H Ni n tt nghipg. Bc th 3/72.3: Ch ct:*Bc 1: Phay th: a. Chiu su ct: t =3 (mm) b. Lng chy dao. Theo bng 5-146 ( S tay CNCTM (tp 2))chn SZ = 0,1( mm/ rng ) Tra bng 5-125 s tay CNCTM T2 ta c.( ) vg mm Sz/ 24 . 0 2 . 0 an ton ta nhn vi cc h s iu chnh sau.- h s iu chnh ph thuc vo cch g lp dao phay 1 glk- h s iu chnh ph thuc vo gc nghing chnh1 nckm ( ) rg mm k S Sdc z z/ ) 24 . 0 2 . 0 ( 1 . 1 ). 24 . 0 2 . 0 ( . do chi tit c v cng nn ta chn Sz=0.2 (mm/rg)c. Vn tc ct.Tra bng 5-127 s tay CNCTM T2 ta c.Vb=204 (m/ph) an ton ta nhn vi cc h s iu chnh sau.- h s iu chnh ph thuc vo cng ca gang 1 ck- h s iu chnh ph thuc vo chu k bn ca dao 1 bk- h s iu chnh ph thuc vo mc hp kim cng 8 . 0 hkk- h s iu chnh vo trng thi b mt gia cng8 . 0 bmk - h s iu chnh ph thuc vo chiu rng phay1 rdkVy( ) ph m k k k k k V Vrd bm hk b c b/ 56 . 130 1 . 8 , 0 . 8 , 0 . 1 . 1 . 204 . . . . S vng quai ca my l.( ) ph vgdvn / 79 , 415100 . 14 , 356 , 130 . 1000.1000 i chiu vi thuyt minh my ta chn ( ) ph vg nm/ 375 Tnh li vn tc ct thc l.( ) ph mn dvm/ 13 , 1411000375 . 120 . 14 , 31000. . d, Tnh SP v SzthSP=Sz.n.Z=0,2.375.10=750mm/phTheo thuyt minh my ta chn SPT=750mm/phLp LT CH C Kh1-K3 Khoa C Kh129Trng i Hc Cng Nghip H Ni n tt nghipVy( ) rg mmZ nSSptz/ 2 . 010 . 375750. d. Bc tin ca bn my:Sp = nt .Z. Sz =375.5.0,1 = 187,5 (mm/p)Chn theo thuyt minh my 6H12 chn: Sp = 150 (mm/p)Lng tin dao rng thc t :Sz=5 . 19095.Z nStp=0,1(mm/rng) e. Lc ct PZ: p dng cng thc: Pz=. . . ...x y upMP qCt S B ZKDn -Trong h s CP v cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68,20,860,721 0,7860- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Kp=KMP=17501]1

vnB (do B= 750) Pz=0 786 , 01 72 , 0 86 , 0190 . 205 . 100 . 1 , 0 . 5 , 2 . 2 , 68=1356,3(KG)f. Cng sut ct gt: Tra bng 5-129 s tay CNCTM T2 ta c.( ) kw Ncg6 . 4 i chiu vi thuyt minh my ta thy, my lm vic an ton Vy m bo s an ton khi ct gt g . Thi gian chy my :Lp LT CH C Kh1-K3 Khoa C Kh130Trng i Hc Cng Nghip H Ni n tt nghipTm = iSL L Lp.2 1 + + pht L =573 mm L1=0,5.( ) D D B 2 2+(0,53)=0,5.) 20 20 100 (2 2 +(0,5-3)= 36,4 mmL2= 1-6 mm chn L2=4 mm S lt ct i = 4 Vy Tm=7504 4 , 36 573 + +.4 = 3,24 pht -Ta phay nhiu ln t kch thc vi cng ch ct nh tnh ton trn*Bc 2: Phay tinh:i) Chiu su ct.t= 1mmj) Lng tin dao.Tra bng 5-125 s tay CNCTM T2 ta c.( ) rg mm S / 8 . 0 5 . 00 Ta chn S0=0.8(mm/rg)m( ) rg mmZSSz/ 08 , 0108 , 00 k) c, Tc ct (m/ph)Tra bng 5-127 s tay CNCTM T2 ta c.Vb=260 (m/ph) an ton ta nhn vi cc h s iu chnh sau.- h s iu chnh ph thuc vo cng ca gang 1 ck- h s iu chnh ph thuc vo chu k bn ca dao 1 bk- h s iu chnh ph thuc vo mc hp kim cng 8 . 0 hkk- h s iu chnh vo trng thi b mt gia cng1 bmk - h s iu chnh ph thuc vo chiu rng phay1 rdk- h s ph thuc vo gc nghing chnh1 nckVy( ) ph m k k k k k k V Vnc rd bm hk b c b/ 208 1 . 1 . 8 , 0 . 1 . 1 . 204 . . . . . S vng quai ca my l.( ) ph vgdvn / 662120 . 14 , 3208 . 1000.1000 i chiu vi thuyt minh my ta chn ( ) ph vg nm/ 600 Lp LT CH C Kh1-K3 Khoa C Kh131Trng i Hc Cng Nghip H Ni n tt nghipTnh li vn tc ct thc l.( ) ph mn dvm/ 4 , 1881000600 . 100 . 14 , 31000. . d, Tnh SP v SzthSP=Sz.n.Z=0,08.600.10=480mm/phTheo thuyt minh my ta chn SPT=475mm/phVy( ) rg mmZ nSSptz/ 079 . 010 . 600475. l) Nghim cng sut.Tra bng 5-129 s tay CNCTM T2 ta c.( ) kw Ncg6 , 1 i chiu vi thuyt minh my ta thy ( ) kw N Ndc cg25 , 5 75 , 0 . 7 . < Vy ch ct chn trn l hp l.e)Tnh thi gian gia cng l.phmSL L LT2 1 + +Trong . L1=( ) tgtB D D + 2 25 , 0 =( ) ( ) mmtg1560268 100 100 5 , 02 2 + L2=3mmVy( ) ph Tm244 , 14753 15 573+ +BcMyDao n(vg/ph)t(mm) S(mm/rgTmPhay th6H12 BK8 375 3 750 3,24Phay tinh6H12 BK8 600 1 475 2,43. Nguyn cng III: Phay 2 mt u E,D3.1: S nguyn cng :Lp LT CH C Kh1-K3 Khoa C Kh132Trng i Hc Cng Nghip H Ni n tt nghip210BK8 75 118 2,5t (mm) S (mm/pht) n (v/p) Dao My B c95 150 16H82 Phay thPhay tinh 6H82 BK8v (m/p) T (pht)44,71,5352,1Lp LT CH C Kh1-K3 Khoa C Kh133Trng i Hc Cng Nghip H Ni n tt nghip3.2:Phn tch nguyn cng :a. Mc ch:Gia cng 2 mt bn lm chun gia cng cc nguyn cngsau.bngcnt RZ20. mbolpghpchocc nguyn cngb. nh v :S dng 2 phin t hn ch 3 bc t do, 2 cht tr hn ch 2 bc t do c. Kp cht: Dng c cu kp cht chuyn dng nhhnh v.d. My:mbonngsut vchnhxctadngmyphay ngang6H82cNM = 7 KW, hiu sut = 0.75 ]N = 7 0.75 = 5.25 (kw).e. Dao: Dng dao phay a 3 mt rnggn mnh thp gi P18, D=150 mm, d=40mm ,Z =16 (rng) B =2,5 ;T=60 ( pht ).f. Dng c o:- Thc cp 1/50g. Bc th 3/7Lp LT CH C Kh1-K3 Khoa C Kh134Trng i Hc Cng Nghip H Ni n tt nghip h.ch ct : *B c 1: Phay th.Chiu su ct t =2 mm .Lng chy dao rng Sz=0,18 mm/rng (Bng 5-170 STayCNCTM 2 ) Lng chy dao vng S0= 0,18. 22= 3,96 mm/vng.Tc ct Vb=24,5 m/ph (Bng 5-171STayCNCTM 2 ) .S vng quay ca trc chnh l: ph vgDVntt/ , 52150 . 14 , 35 , 24 . 1000.. 1000

Ta chn s vng quay theo my nm=45 vng/pht.Nh vy tc ct thc t l:ph mn DVttt/ 195 , 21100045 . 150 . 14 , 31000. . VyBc tin ca bn my:Sp = nt .Z. Sz =37.22.0,18 = 146,5 (mm/p)Theo thuyt minh my chn Sp =118 (mm/p)Cng sut ctNo=2,5 KW (Bng 5-174 STayCNCTM ) . No< Nm.=7.0,75 =5,25KWg . Thi gian chy my :Tm = iSL L Lp.2 1 + + pht -L =180 mm -Theo bng 31 (TKDACNCTM ) i vi dao phay aL1= ( )( t D t + (0,5 3 )= ( ) 100 130 .( 100 +2 = 54,77 mmL2= ( 2-5 ) mm chn L2=4 mm S lt ct i = 2 Lp LT CH C Kh1-K3 Khoa C Kh135Trng i Hc Cng Nghip H Ni n tt nghipVy Tm=2 .1504 77 , 54 180 + += 3,18 pht *B c 2:(phay tinh vi Rz = 20)Chiu su ct t =0,5 mm , lng chy dao vng S0=1,2 mm/vng (Bng 5-37 STay CNCTM 2 ) . Sz = So/z =1,2/22 =0,054 mm/rngTc ct Vb=34 m/ph (Bng 5-171STayCNCTM 2 ) .S vng quay ca trc chnh l:

ph vgDVn / 18 , 72150 . 14 , 334 . 1000.. 1000 Ta chn s vng quay theo my nm=60 vg/ph.Nh vy tc ct thc t l: ph mn DVtt/ 26 , 28100060 . 150 . 14 , 31000. . d. Bc tin ca bn my:Sp = nt .Z. Sz =60.22.0,054 = 71,28 (mm/p)Chn theo thuyt minh my 6H82 chn: Sp = 60 (mm/p)Lng tin dao rng thc t :Sz=22 . 6060.Z nStp=0,045(mm/rng) Cng sut ctNo=1,2 KW (Bng 5-174 STayCNCTM ) . No< Nm.=7.0,75 =5,25KWg . Thi gian chy my :Tm = iSL L Lp.2 1 + + pht Lp LT CH C Kh1-K3 Khoa C Kh136Trng i Hc Cng Nghip H Ni n tt nghip-L =180 mm -Theo bng 31 (TKDACNCTM ) i vi dao phay aL1= ( )( t D t + (0,5 3 )= ( ) 100 130 .( 100 +2 = 54,77 mmL2= ( 2-5 ) mm chn L2=4 mm S lt ct i = 1 Vy Tm=1 .1504 77 , 54 180 + += 1,59 pht 4. Nguyn cng IV: PHAY Mt di a V RNH b,c4.1 s nguyn cngLp LT CH C Kh1-K3 Khoa C Kh137Trng i Hc Cng Nghip H Ni n tt nghip72nP18 190 95 2,5t (mm) S (mm/pht) n (v/p) Dao My B c475 235 0,56H12 Phay thPhay tinh 6H12 P18v (m/p) T (pht)29,832,0111,93 0,81Lp LT CH C Kh1-K3 Khoa C Kh138Trng i Hc Cng Nghip H Ni n tt nghip4.2:Phn tch nguyn cng :a. Mc ch: Gia cng mt A lp ghp vi thanh np v m bo yu cu trt . bng cn t RZ 20. b. nh v :S dng 2 phin t hn ch 3 bc t do, 3 cht tr hn ch 3 bc t do c. Kp cht: Dng c cu kp cht chuyn dng nhhnh v.d. My:mbonngsut vchnhxctadngmyphay 6H12cNM = 7 KW, hiu sut = 0.75 ]N = 7 0.75 = 5.25 (kw).e. Dao: DngdaophayngnthpgiP18, Ddao=20mm,Z=5 (rng),T=60 ( pht ). f. Dng c o:- Thc cp 1/50g. Bc th 3/74.3: Ch ct :*Bc 1: Phay th: a. Chiu su ct: t =3 (mm) b. Lng chy dao. Lp LT CH C Kh1-K3 Khoa C Kh139Trng i Hc Cng Nghip H Ni n tt nghipTheo bng 5-146 ( S tay CNCTM (tp 2))chn SZ = 0,1( mm/ rng )c. Vn tc ct.Vn tc ct c tnh theo cng thc V=... . . .qvv m x y u pCDKT t S B Z-H s CV v mu tra bng 5-39(s tay CNCTM tp 2 ) ta cCVq m x y u p46,70,450,330,5 0,50,1 0,1-H s iu chnh chung cho ta h s ct KV=KMV.KNV.KUV.-H s iu chnh ph thuc vo cng ca gang tra bng 5-1 (s tay CNCTM (tp 2)) :KMV = Kn.17501]1

vnB (do B= 750,v Kn=1)-H s iu chnh ph thuc vo trng thi b mt gia cng Tra bng 5-5 (S tay CNCTM (tp 2)): K NV =0,80.85. Chn K NV = 0,8 -H s iu chnh ph thuc vo mc hp kim cng KUV Tra bng 5- 6 ( S tay CNCTM ( tp 2)): KUV= 0.3=> Kv= 1.0,8.0.3= 0.24-S rng dao:Z = 5 (rng)-ng knh dao:D = 20 (mm)-Tui bn dao:T = 60 (pht )-Chiu su ct:t = 2.5 (mm)-B rng ln nht mt gia cng:B = 20 (mm)Lp LT CH C Kh1-K3 Khoa C Kh140Trng i Hc Cng Nghip H Ni n tt nghip-Lng chy dao:SZ =0,1 (mm/ rng)V= 24 , 0 .5 . 20 . 1 , 0 . 5 , 2 . 6020 . 7 , 461 , 0 1 , 0 5 , 0 5 , 0 33 , 045 , 0=14,1(m/p) =>n=20 . 14 , 31 , 14 . 1000=224,52(vng/pht)Chn theo thuyt minh my 6H12 ly: n(t) = 190 (v/p) Tnh thc t: Vt=. . .20.1901000 1000D n =11,93 (m/p)d. Bc tin ca bn my:Sp = nt .Z. Sz =190.5.0,1 = 95 (mm/p)Chn theo thuyt minh my 6H12 chn: Sp = 95 (mm/p)Lng tin dao rng thc t :Sz=5 . 19095.Z nStp=0,1(mm/rng)e. Lc ct PZ:p dng cng thc: Pz=. . . ...x y upMP qCt S B ZKDn -Trong h s CPv cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68,20,860,721 0,7860- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Kp=KMP=17501]1

vnB (do B= 750)Lp LT CH C Kh1-K3 Khoa C Kh141Trng i Hc Cng Nghip H Ni n tt nghip Pz=0 786 , 01 72 , 0 86 , 0190 . 205 . 20 . 1 , 0 . 5 , 2 . 2 , 68=271,27(KG)f. Cng sut ct gt:Nc=60 . 10293 , 11 . 27 , 27160 . 102.V Pz=0,52(KW)Theo thuyt minh ca my ,my lm vic an ton Vy m bo s an ton khi ct gt g . Thi gian chy my :Tm = iSL L Lp.2 1 + + pht L =210 mm L1=0,5.( )2 2B D D +(0,53)=0,5.) 20 20 20 (2 2 +(0,5-3) = 7,5 mmL2= 1-6 mm chn L2=4 mm S lt ct i = 3 Vy Tm=954 5 , 7 210 + +3 = 6,03pht Bc 2: Phay tinh:a.Chiu su ct :t =4- 3 = 1 (mm)b.Lng tin dao:Trabng5-146(StayCNCTM(tp2))chn: SZ=0,1 (mm/rng)c. Vn tc ct.Vn tc ct c tnh theo cng thc V=... . . .qvv m x y u pCDKT t S B Z-H s CV v mu tra bng 5-39 (s tay CNCTM tp 2) ta cLp LT CH C Kh1-K3 Khoa C Kh142Trng i Hc Cng Nghip H Ni n tt nghipCVq m x y u p46,70,450,330,5 0,5 0,1 0,1V= 24 , 0 .5 . 20 . 1 , 0 . 5 , 0 . 6020 . 7 , 461 , 0 1 , 0 5 , 0 5 , 0 33 , 045 , 0=31,52 (m/p)=>n=20 . 14 , 352 , 31 . 1000=501,91(vng/pht)Theo thuyt minhmy 6H12 ly : n(t) = 475 (v/p) Tnh thc t: Vt=1000475 . 20 . 14 , 31000. .n D =29,83 (m/p)d.Bc tin ca bn my :Sp =nt .Z.SZ= 475.5 .0,1 =237,5 (mm/p) -Theo thuyt minhmy chn Sp =235(mm/p)Lng tin dao rng thc t :Sz=5 . 475235.Z nStp=0,098(mm/rng)e.Lc ct PZ:Pz=. . . ...x y upMP qCt S B ZKDn-Trong h s CP v cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68,20,860,721 0,7860- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Lp LT CH C Kh1-K3 Khoa C Kh143Trng i Hc Cng Nghip H Ni n tt nghipKp=KMP= 17501]1

vnB (do B= 750) Pz=0 786 , 01 72 , 0 86 , 0475 . 205 . 20 . 1 , 0 . 5 , 0 . 2 , 68=67,96(KG)f. Cng sut ct gt:Nc=60 . 10283 , 29 . 96 , 6760 . 102.V Pz=0,4(KW)Ta thy Ne 200 kG 4 200 kG 1000> 5000 > 50.000V chi tit c G = 1,5 Kg nm trong khong Kv= 1.0,8.0.3= 0.24-S rng dao:Z = 5 (rng)-ng knh dao:D = 1000 (mm)Lp LT CH C Kh1-K3 Khoa C Kh202Trng i Hc Cng Nghip H Ni n tt nghip-Tui bn dao:T = 60 (pht )-Chiu su ct:t = 2.5 (mm)-B rng ln nht mt gia cng:B = 100 (mm)-Lng chy dao:SZ =0,1 (mm/ rng)V= 24 , 0 .5 . 100 . 1 , 0 . 5 , 2 . 6020 . 7 , 461 , 0 1 , 0 5 , 0 5 , 0 33 , 045 , 0=12(m/p) =>n=100 . 14 , 312 . 1000=191,08(vng/pht)sChn theo thuyt minh my 6H12 ly: n(t) = 190 (v/p) Tnh thc t: Vt=. . .20.1901000 1000D n =11,93 (m/p)d. Bc tin ca bn my:Sp = nt .Z. Sz =190.5.0,1 = 95 (mm/p)Chn theo thuyt minh my 6H12 chn: Sp = 95 (mm/p)Lng tin dao rng thc t :Sz=5 . 19095.Z nStp=0,1(mm/rng)e. Lc ct PZ: p dng cng thc: Pz=. . . ...x y upMP qCt S B ZKDn -Trong h s CP v cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68,20,860,721 0,7860- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Lp LT CH C Kh1-K3 Khoa C Kh203Trng i Hc Cng Nghip H Ni n tt nghipKp=KMP=17501]1

vnB (do B= 750) Pz=0 786 , 01 72 , 0 86 , 0190 . 205 . 100 . 1 , 0 . 5 , 2 . 2 , 68=1356,3(KG)f. Cng sut ct gt:Nc=60 . 10293 , 11 . 3 , 135660 . 102.V Pz=2,64(KW)Theo thuyt minh ca my ,my lm vic an ton Vy m bo s an ton khi ct gt g . Thi gian chy my :Tm = iSL L Lp.2 1 + + pht L =102 mm L1=0,5.( ) D D B 2 2+(0,53)=0,5.) 20 20 100 (2 2 +(0,5-3)= 36,4 mmL2= 1-6 mm chn L2=4 mm S lt ct i = 1 Vy Tm=954 4 , 36 102 + + =1,498 pht -Ta phay nhiu ln t chiu su 9.5 vi cng ch ct nhu tnh ton trn*Bc 2: Phay tinh:a.Chiu su ct :t =7- 6 = 1 (mm)b.Lng tin dao:Trabng5-146(StayCNCTM(tp2)):chn: SZ=0.1 (mm/rng)c. Vn tc ct.Lp LT CH C Kh1-K3 Khoa C Kh204Trng i Hc Cng Nghip H Ni n tt nghipVn tc ct c tnh theo cng thc V=... . . .qvv m x y u pCDKT t S B Z-H s CV v mu tra bng 5-39 (s tay CNCTM tp 2) ta cCVq m x y u p46,70,450,330,5 0,5 0,1 0,1V= 24 , 0 .5 . 100 . 1 , 0 . 5 , 0 . 6020 . 7 , 461 , 0 1 , 0 5 , 0 5 , 0 33 , 045 , 0=26,84 (m/p)=>n=20 . 14 , 384 , 26 . 1000=427,38(vng/pht)Theo thuyt minhmy 6H12 ly : n(t) = 375 (v/p) Tnh thc t: Vt=1000375 . 20 . 14 , 31000. .n D =23,55 (m/p)d.Bc tin ca bn my :Sp =nt .Z.SZ= 375.5 .0,1 =187,5 (mm/p) -Theo thuyt minhmy chn Sp =150(mm/p)Lng tin dao rng thc t :Sz=5 . 375150.Z nStp=0,08(mm/rng)e.Lc ct PZ:Pz=. . . ...x y upMP qCt S B ZKDn-Trong h s CP v cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68,20,860,721 0,7860Lp LT CH C Kh1-K3 Khoa C Kh205Trng i Hc Cng Nghip H Ni n tt nghip- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Kp=KMP= 17501]1

vnB (do B= 750) Pz=0 786 , 01 72 , 0 86 , 0375 . 205 . 100 . 1 , 0 . 5 , 0 . 2 , 68=289,39(KG)f. Cng sut ct gt:Nc=60 . 10255 , 23 . 39 , 28960 . 102.V Pz=1,27(KW)Ta thy Ne Kv= 1.0,8.0.3= 0.24-S rng dao:Z = 5 (rng)-ng knh dao:D = 20 (mm)-Tui bn dao:T = 60 (pht )Lp LT CH C Kh1-K3 Khoa C Kh209Trng i Hc Cng Nghip H Ni n tt nghip-Chiu su ct:t = 2.5 (mm)-B rng ln nht mt gia cng:B = 100 (mm)-Lng chy dao:SZ =0,1 (mm/ rng)V= 24 , 0 .5 . 100 . 1 , 0 . 5 , 2 . 6020 . 7 , 461 , 0 1 , 0 5 , 0 5 , 0 33 , 045 , 0=12(m/p) =>n=20 . 14 , 312 . 1000=191,08(vng/pht)Chn theo thuyt minh my 6H12 ly: n(t) = 190 (v/p) Tnh thc t: Vt=. . .20.1901000 1000D n =11,93 (m/p)d. Bc tin ca bn my:Sp = nt .Z. Sz =190.5.0,1 = 95 (mm/p)Chn theo thuyt minh my 6H12 chn: Sp = 95 (mm/p)Lng tin dao rng thc t :Sz=5 . 19095.Z nStp=0,1(mm/rng)e. Lc ct PZ: p dng cng thc: Pz=. . . ...x y upMP qCt S B ZKDn -Trong h s CP v cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68,20,860,721 0,7860- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Lp LT CH C Kh1-K3 Khoa C Kh210Trng i Hc Cng Nghip H Ni n tt nghipKp=KMP=17501]1

vnB (do B= 750) Pz=0 786 , 01 72 , 0 86 , 0190 . 205 . 100 . 1 , 0 . 5 , 2 . 2 , 68=1356,3(KG)f. Cng sut ct gt:Nc=60 . 10293 , 11 . 3 , 135660 . 102.V Pz=2,64(KW)Theo thuyt minh ca my ,my lm vic an ton Vy m bo s an ton khi ct gt g . Thi gian chy my :Tm = iSL L Lp.2 1 + + pht L =50 mm L1=0,5.( ) D D B 2 2+(0,53)=0,5.) 20 20 100 (2 2 +(0,5-3)= 36,4 mmL2= 1-6 mm chn L2=4 mm S lt ct i = 1 Vy Tm=954 4 , 36 50 + + =0,95 pht -Ta phay nhiu ln t chiu su 9.5 vi cng ch ct nhu tnh ton trn*Bc 2: Phay tinh:a.Chiu su ct :t =6- 5 = 1 (mm)b.Lng tin dao:Trabng5-146(StayCNCTM(tp2)):chn: SZ=0.1 (mm/rng)c. Vn tc ct.Lp LT CH C Kh1-K3 Khoa C Kh211Trng i Hc Cng Nghip H Ni n tt nghipVn tc ct c tnh theo cng thc V=... . . .qvv m x y u pCDKT t S B Z-H s CV v mu tra bng 5-39 (s tay CNCTM tp 2) ta cCVq m x y u p46,70,450,330,5 0,5 0,1 0,1V= 24 , 0 .5 . 100 . 1 , 0 . 5 , 0 . 6020 . 7 , 461 , 0 1 , 0 5 , 0 5 , 0 33 , 045 , 0=26,84 (m/p)=>n=20 . 14 , 384 , 26 . 1000=427,38(vng/pht)Theo thuyt minhmy 6H12 ly : n(t) = 375 (v/p) Tnh thc t: Vt=1000375 . 20 . 14 , 31000. .n D =23,55 (m/p)d.Bc tin ca bn my :Sp =nt .Z.SZ= 375.5 .0,1 =187,5 (mm/p) -Theo thuyt minhmy chn Sp =150(mm/p)Lng tin dao rng thc t :Sz=5 . 375150.Z nStp=0,08(mm/rng)e.Lc ct PZ:Pz=. . . ...x y upMP qCt S B ZKDnLp LT CH C Kh1-K3 Khoa C Kh212Trng i Hc Cng Nghip H Ni n tt nghip-Trong h s CP v cc h s m tra bng 5 41 ( s tay CNCTM (tp 2))Cpx y u q w68,20,860,721 0,7860- H s iu chnh ph thuc vt liu gia cng KMP tra bng 5 9 (s tay CNCTM (tp 2)):Kp=KMP= 17501]1

vnB (do B= 750) Pz=0 786 , 01 72 , 0 86 , 0375 . 205 . 100 . 1 , 0 . 5 , 0 . 2 , 68=289,39(KG)f. Cng sut ct gt:Nc=60 . 10255 , 23 . 39 , 28960 . 102.V Pz=1,27(KW)Ta thy Ne