PRODUCTION PROCESS II-NC/CNC

TUGAS UASMATA KULIAH NC/CNC

Tujuan Mengenal teknologi produksi dengan menggunakan NC/CNC, Dapat lebih memahami pemograman dan proses mesin-mesin NC/CNC,Dapat menjalankan / menggunakan mesin NC/CNC,Dapat memahami konsep perancangan dengan bantuan komputer,Dapat membuat penerapan sistem CAD/CAM dalam proses perancangan dan produksi.

Pokok Bahasan ....1Definisi mesin perkakas NC/CNC; Tipe-tipe sistem NC;Pemrograman; Proses NC; Manuscript; Manufaktur NC-CNC; Sistem pendukung mesin perkakas NC/CNC; Mesin perkakas TU-2A; Data-data teknologis; Sistem koordinat menurut ISO 841; Pemrograman kode-G TU-2A;Aspek teknologi TU-3A; Pemrograman kode-G TU-3A;Praktikum pembuatan produk dengan menggunakan TU-2A (2 sumbu) dan pembuatan produk dengan menggunakan TU-3A (3 sumbu);Sistem CAD; Konsep perancangan dengan bantuan komputer, pemodelan geometris, konfigurasi sistem CAD;Interaksi sistem komputer grafik, transformasi dan proyeksi; Sistem CAM; Komputer dalam manufaktur, Penerapan teknik CAD/CAM dalam perancangan dan produksi, Pengertian tentang concurrent engineering, Process planning & CAPP system, numerical control, integrated computer-aided manufacturing. Simulasi CAD/CAM.

Pokok Bahasan .....2KepustakaanEmco Maier & Co. 1988. Turning Training Unit. Austria.Emco Maier & Co. 1988. Milling Training Unit. Austria.Gunn, Thomas G. 1985. CAD/CAM/CIM. Now and in The Future, Industrial Control System.IBM. 1985. Computers in Manufacturing. Special issue of the IBM Journal of Research and Development: Vol.29 no.4.Muljowidodo. 1994. Tinjauan Teknologi CAD/Cam Dalam Bidang Manufaktur dan Rekayasa. Lembaga Penelitian ITB: Bandung.Powers, John H. 1986. Automating Electronics Manufacturing. San Francisco CA.Powers, John H. 1986. Computer -Automated Manufacturing. Singapore: Mc. Graw - Hill International Edition.Taufiq Rochim. 1994. Pengantar CAM. Bandung: Lembaga Penelitian ITB. Bosan, C.B. Computer Aided Design and Manufacture. John Willey & Sons.Robot, Mills. Mechanical Design. CAE.Teicholz, Eric. CAD/CAM Hand Book. Mc.Graw-Hill Book Company, New York.Rogers David F.Adams, J.Alan. Mathematical Elements for Computer Graphics. Mc.Graw-Hill, International Editions.Jr. Poewer, H.John. Computer Automated Manufacturing. Mc.Graw-Hill Inc.Koren, Yoram. Computer Control of Manufacturing Systems. New York: Mc.Graw-Hill Book Co.Bedworth, D.D.Henderson, M.R. Computer Integrated Design and Manufacturing. New York: Mc.Graw-Hill Book Co.Groover, Mikell P.Zimmers, E.W.Jr. CAD/CAM: Computer Aided Design and Manufacturing. New York: Prentice-Hall Inc. Englewood Cliffs.Chang, T.C. Wysk, R.A.Wang, H.P. Computer Aided Manufacturing. New York: Prentice-Hall Inc. Englewood Cliffs.Wilson, Charles E. Computer Integrated Machine Design. Prentice Hall Inc.EMCO MATER, CAD & CAM Manual.APA YANG ANDA KETAHUI TENTANG :NCCNCMCUDPUCLUCNC MachinePtP Tool MovementOpen Loop SystemClose Loop System

INTRODUCTIONNumerical Control (NC) or control by numbers, is the concept, which has revolutionised the manufacturing scene that is partially due to the rapid advancement in microelectronics that has taken place since late 1960s.Numerical Control (NC) :Numerical control of machine tools may be defined as a method of automation in which various functions of machine tools are controlled by letters, numbers and symbols.

In NC machine tools one or more of the following functions may be automatic:starting and stopping of machine tool spindlecontrolling the spindle speedpositioning the tool tip at desired locations and guiding it along desired paths by automatic control of the motion of slidescontrolling the rate of movement of the tool tip (i.e. feed rate)changing of tools in the spindle.

Numerical Control ElementsMachine Control UnitPart ProgramN30 G00 X120.0 Y 45.0 Z-85.0N40 G90N50 G03 X200.0 Y200.0 I-100.0 J0 F200N60 G01 X120.0 Y110.0NC Tooling

NC Machine ToolsFor the parts having complex contours, that cannot be manufactured by conventional machine tools.For small lot production, often for even single (one off) job production, such as for prototyping, tool manufacturing, etc.For jobs requiring very high accuracy and repeatability.For jobs requiring many set-ups and/or the setups very expensive.The parts that are subjected to frequent design changes and consequently require more expensive manufacturing methods.The inspection cost is a significant portion of the total manufacturing cost.