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Chöông IV:

LAÄP TRÌNH GIA COÂNG VAØ MOÂ PHOÛNG

TREÂN PHAÀN MEÀM WinNC GE Series 21 MB

I. Caùc böôùc laäp trình.

Caùc böôùc thöïc hieän laäp trình cô baûn:

- Phaân tích baûn veõ.

- Löïa choïn duïng cuï caét.

- Laäp phieáu coâng ngheä.

- Laäp trình vaø moâ phoûng:

Thieát laäp caùc thoâng soá coâng ngheä.

Löïa choïn dao cuï, buø tröø chieàu daøi, baùn kính (neáu caàn).

Choïn cheá ñoä caét.

Thöïc hieän ñöôøng chaïy dao.

Ví duï:

Laäp chöông trình NC cho chi tieát sau (Hình veõ trang sau).

Böôùc 1: Choïn duïng cu, trình töï gia coâng vaø cheá ñoä caét goït.

Maõ dao Kieåu dao Böôùc coâng ngheä.

T1 Facing DM 40 Phay maët, vieàn ngoaøi.

T4 Drill DM 10 Khoan moài.

T5 Drill DM 6.8 Khoan loã M8.

T2 Endmill DM 16 Môû roäng loã 40

T3 Endmill DM 10 Môû roäng loã 16, Slot.

T6 Tap M8 Ren trong M8

T7 Chamfer Vaït caïnh.

Cheá ñoä caét goït: tra theo baûng dao, vaät lieäu phoâi: hôïp kim nhoâm.

Böôùc 2: Thieát keá ñöôøng chaïy dao vaø laäp trình.

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Chöông trình NC:

O0001 (DEMOPART 1)

N0005 G0 G28 G91 Y0 Z0

N0010 G0 G90 G17 G40 G80

N0015 T1 M6 ( MILL DM40 FACING)

N0020 G0 G54 G90 X-22 Y15 S2000 F800 M3

N0025 G43 H1 Z20

N0030 G0 Z0

N0035 G1 X140

N0040 Y50

N0045 X0

N0050 Y85

N0055 X162

N0060 G0 Z2

N0065 X124.01 Y122

N0070 Z0

N0075 G1 G91 Z-2

N0080 G90

N0085 G42 H11

N0090 M98 P0002

N0095 G1 G91 Z-2

N0100 G90

N0105 G42 H11

N0110 M98 P0002

N0115 G1 G91 Z-2

N0120 G90

N0125 G42 H11

N0130 M98 P0002

N0135 G1 G91 Z-2

N0140 G90

N0145 G42 H11

N0150 M98 P0002

N0155 G0 Z20

N0160 T4 M6 ( SPOT )

N0165 G0 G54 G90 X120 Y45 S2000 F200 M3

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N0170 G43 H4 Z20

N0175 G81 Z-4.5 R2 G99

N0180 X75 Y40

N0185 X45

N0190 Y70

N0195 X20 Y80

N0200 G52 X45 Y40 (LOCAL COORDINATE)

N0205 G16 X27.5 Y120 (POLAR COODINATE INTERPOLATION)

N0210 Y150

N0215 Y180

N0220 Y210

N0225 Y240

N0230 Y270

N0235 Y300

N0240 Y330

N0245 G80

N0250 G15

N0255 G0 Z20

N0260 G52 X0 Y0

N0265 T5 M6 (DRILL DM6.8)

N0270 G0 G54 G90 X120 Y45 S2000 F200 M3

N0275 G43 H5 Z20

N0280 G81 Z-30 R2 G99

N0285 X45 Y40

N0290 X20 Y80

N0295 G52 X45 Y40

N0300 G16 X27.5 Y120

N0305 Y150

N0310 Y180

N0315 Y210

N0320 Y240

N0325 Y270

N0330 Y300

N0335 Y330

N0340 G15 G80

N0345 G0 Z20

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N0350 G52 X0 Y0 (RETURN TO ORIGIN)

N0355 T2 M6 (POCKET DM40)

N0360 G0 G54 G90 X45 Y40 S2000 F400 M3

N0365 G43 H2 Z5

N0370 G83 G99 Z-26 R2 Q1 F200

N0375 G41 H12 G1 Z0

N0380 G1 X25 Y40 F400

N0385 M98 P140003

N0390 G40 G0 X45 Y40

N0395 G0 Z20

N0400 T3 M6 (POCKET DM16)

N0405 G0 G54 G90 X120 Y45 S2000 F400 M3

N0410 G43 H3 Z5

N0415 G41 H13 G1 Z0

N0420 G1 X112 Y45 F400

N0425 M98 P140004

N0430 G40

N0435 G0 X120 Y45

N0440 G0 Z20

N0445 G0 X20 Y80

N0450 G41 H13 G1 Z0

N0455 G1 X12 Y80

N0460 M98 P140005

N0465 G40 G0 X20 Y80

N0470 G0 Z10

N0475 (MILL SLOT)

N0480 G0 X75 Y40

N0485 G0 Z1

N0490 G1 G91 Z0

N0495 #1 =0

N0500 G1 G91 Z-1.5 F150

N0505 G3 G90 X45 Y70 R30 F400

N0510 G1 G91 Z-1.5 F150

N0515 G2 G90 X75 Y40 R30 F400

N0520 #1 =#1+1