Download - Mengenal dasar dasar-cnc
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CNC
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PERKEMBANGAN CNC
NC (Numerical Control) adalah system pengendalianmesin dengan menggunakan angka/numeric.
CNC (Computer Numerical Control) pada prinsipnyasama dengan NC, yaitu sistem pengendalian mesindengan menggunakan angka/numerik, tetapimemiliki kelebihan dibanding NC. Kelebihan tersebutdiantaranya adalah kemampuan dalam menyimpandan meningkatkan memori pada alat kendali.
Menurut Pusztai (1983:8) mesin CNC adalah mesinyang terdiri dari unit input, computing or mathematics unit, memory unit, control unit, and out put unit.
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PENGENDALIAN MESIN NC
Gambar 1.1 Prinsip Pengoperasian Mesin NC Gambar 1.2 Prinsip pengendalian gerakan sumbu mesin
Motor
Roda Gigi
Meja Mesin
Poros Pembawa (Leadscrew)
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STRUKTUR PENGOPERASIAN MESIN NC
Gambar kerja
Program
Media penyimpan program
(pita berlubang)
Alat Pembaca Data
Pengendali
Motor
Roda Gigi
Meja
Leadscrew
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MODEL PENGOPERASIAN MESIN CNC
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SISTIM PENGENDALIAN MESIN NON NC/CNC
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BAGIAN-BAGIAN MESIN CNC
Sistem
Pengendali
Mesin
Perkakas
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SISTIM PENGENDALI MESIN CNC
Keyboard Display
Punch Reader
Tape PunchCNC (Computer Numerical Control)
INTERFACE
MESIN PERKAKAS
Flopy Disc/
Disc Drive
INTERFACE
(RS232)
Pita Kaset
Perlengkapan yang
dapat diintegrasikan ke
dalam sistem
pengendali
Sistem Pengendali CNC
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MESIN PERKAKAS
Struktur mesin,
Spindel dan sistem pencekam benda kerja,
Sistem penggerak (Sistem penggerak spindeldan sistem penggerak sumbu),
Sistem pengukur gerakan/langkah, dan
sistem pengendalian alat potong.
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Keyboard Display
Punch Reader
Tape PunchCNC (Computer Numerical Control)
INTERFACE
Flopy Disc/
Disc Drive
INTERFACE
(RS232)
Pita Kaset
Perlengkapan
yang dapat
diintegrasikan
ke dalam sistem
pengendali
Sistem Pengendali CNC
Pengendali
kecepatan
mesin
Pengendali
sumbu
mesin
Pengendali
fungsi
tambahan
Motor
Roda Gigi
Meja Mesin
Poros Pembawa (Leadscrew)
Pengukur
kecepatan
Pengukur perbedaan
ukuranMesin
Perkakas
HUBUNGAN ANTARA BAGIAN PENGENDALI DAN MESIN
PERKAKAS PADA MESIN CNC
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SISTEM PENGENDALI ALAT POTONG
sebuah pemegang pahat (tool holder);
sebuah tempat pemasangan mata pahat (tool tip carrier); dan
sebuah atau beberapa mata pahat (tools tips).
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MACAM-MACAM PEMEGANG ALAT POTONG
(TOOL HOLDER)
Cylindrical shank, prismatic.
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SISTEM PENGENDALIAN PADA MESIN CNC
MTS GMBH 1999
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JENIS-JENIS ALAT POTONG
(a) (b) (c)
(e)(d) (f)
(g) (h) (i)
(j) (k) (l)
MTS GMBH 1999
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MTS GMBH 1999
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UKURAN ALAT POTONG
ALAT POTONG BUBUT
ALAT POTONG MILLING
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DASAR-DASAR PEMROGRAMAN CNC
SISTEM KOORDINAT+Z
+X-X
-Z
+Y
-Y
p13
9
19
46
p
34°
+X
+Y
0
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SISTIM SUMBU MESIN BUBUT CNC
MTS GMBH 1999
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MTS GMBH 1999
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SISTIM SUMBU MESIN MILLING CNC
MTS GMBH 1999
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SISTIM SUMBU MESIN MILLING CNC
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JENIS-JENIS TITIK ACUAN PADA MESIN CNC
MTS GMBH 1999
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POSISI TITIK ACUAN PADA MESIN CNC
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TITIK NOL MESIN
TITIK NOL MESIN FRAIS CNC TITIK NOL MESIN BUBUT CNC
M
MTS GMBH 1999
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TITIK NOL BENDA KERJA
XX
Y
Z Z
Y
XZ
Y X
ZY
X
Z
Y
Y
X(a) (e)(d)(c)(b)
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MTS GMBH 1999
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PERUBAHAN TITIK NOL MESIN
KE TITIK NOL BENDA KERJA