hazmil bin hapaz
DESCRIPTION
SLIDE UNTUK LESSON PLAN TEORITRANSCRIPT
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TM001 SIRI 1/2012
HAZMIL BIN HAPAZ
INSTITUT KEMAHIRAN BELIA NEGARA PAGOH
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INSTRUCTIONAL AIMS
KOORDINAT
JENIS CODE
PENENTUAN PAKSI
KUIZ
PENGENALAN
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Pelatih-pelatih mesti boleh :
TERANGKAN PENENTUAN PAKSI MESIN CNC MILLING
TERANGKAN JENIS CODE DALAM PART PROGRAM
BINCANGKAN KOORDINAT GEOMETRI CNC
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CNC adalah akronim kepada Computer Numerical Control
Merupakan kaedah pengawalan mesin secaratepat menggunakan siri arahan berkod
Kod ini dinyatakan dalam bentuk nombor danabjad.
Kod ini mewakili arah, jarak , pergerakan dankedudukan .
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Penentuan paksi dicadangkan oleh (EletricIndustries Association)
Berasaskan “hukum tangan kanan”
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Untuk menentukan paksi-paksi mesin CNC , jari hantu hendaklah ditujukan kearahspindle mesin. Ini adalah paksi Z+.
Setelah paksi dikenalpasti, barulahpengaturcaraan boleh dilakukan.
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Part program adalah perincian pemesinanyang mengandungi langkah-langkahpemesinan untk menghasilkan benda kerja
Perincian ini terdiri daripada kod arahan.
Set tunggal arahan dipanggil blok program
Keseluruhan program dipanggil part program
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Blok Program
Part Program
Konfigurasi blok program haruslahmengandungi :
• Preparatory Function (G-Code)•Miscellaneous Function (M-Code)•Sequence Number (N)•Tool Function (T)•Coordinate (X,Y, Z)
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FUNGSI G-CODE
POSITIONING G0
LINEAR INTERPOLATION G1
CIRCULAR INTERPOLATION G2 (CW), G3 (CCW)
ABSOLUTE COMMAND G90
INCRMENTAL COMMAND G91
WORKPIECE SETTING G54
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FUNGSI G-CODE
SPINDLE SWITCH ON M03 (CW), M04 (CCW)
SPINDLE STOP M05
TOOL CHANGE M06
COOLANT ON M08
COOLANT OFF M09
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Data geometri boleh dinyatakan dalam 2 cara
1. Absolute (G90)
Pengukuran Absolute untuk setiap titiksentiasa diambil dari titik rujukan yang sama atau tetap
2. Incremental (G91)
Kedudukan sebelumnya iaitu setiap titikakan dianggap sebagai titik asalan atautititk rujukan
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(5,4)(10,5)
(-4,5)
(-9,7)
Berikan koordinat bagi titikbertanda A, B, C da D ?
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(5,4)(5,1)(-14,0)
(-5,2)
Berikan koordinat bagi titikbertanda A, B, C da D ?
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Jika ingin memberhentikan spindle, kodarahan mana yang perlu dimasukkandalam blok program?
M05
M06
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G90 X5 Y7 adalah sebahagian blokprogram, G90 merujuk kepada apa?
Absolute
Incrimental
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Berikan koordinat titik B, berdasarkankoordinat incrimental?
(3,-1)
(3,1)TAMAT
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TAJUK MINGGU HADAPAN“ MACHINE ZERO POINT”