R.G.P.V. BHOPAL,M.P.
AUTOMOBILE ENGINEERING 7TH SEMESTER
AU-702(C) CAD/CAM/CIM
UNIT-I
Introduction:Information requirements of mfg organizations; business forecasting & aggregate production plan; MPS, MRP and shop floor/ Production Activity Control (PAC); Mfg as a system, productivity and wealth creation; production processes on volume-variety axes; importance of batch and job shop production; CIM definition and CIM wheel, evolution and benefits; CIM as a subset of Product Life Cycle (PLC) mgt; design for mfg (DFM) and concurrent engg; product design in conventional and CIM environment; terms like CAD, CAE, CAM, CAP, CAPP, CATD and CAQ.
UNIT-II
Graphics & standards:Raster scan, coordinate systems for model (M/ WCS) user & display; database for graphic modeling; PDM, PIM, EDM; define EDM, features of EDM; basic transformations of geometry- translation, scaling, rotation and mirror; introduction to modeling software; for CAD data standardization; developments in drawing data exchange formats; GKS, PHIGS, CORE, IGES, DXF STEP DMIS AND VDI; ISO standard for exchange of Product Model data-STEP and major area application protocols.
UNIT-III
Geometric Modeling: Its use in analysis and mfg; 2D and 3D line, surface & volume models; linear extrusion & rotational sweep; Constructive Solid Geometry (CSG); basics of boundary presentation- spline, Bezier, b-spline, and NURBS; sculpture surfaces, classification, basics of coons, Bezier, b-spline and ruled surfaces; tweaking, constraint based parametric modeling; wire-frame modeling, definition of point, line and circle; polynomial curve fitting; introduction to rapid prototyping.
UNIT-IV
Numeric control and part programming: Principles of NC machines,CNC,DNC;NC modes of point to point, -line & 2D, 3D contouring; NC part programming; ISO standard for coding, preparatory functions(G)- motion, dwell, unit, preset, cutter compensation, coordinate & plane selection groups; miscellaneous (M) codes; CLDATA and tool path simulation; ISO codes for turning tools and holders; ATC, modular work holding and pallets; time and power estimation in milling, drilling & turning; adaptive control, sequence control and PLC; simple part programming examples.
UNIT-V
Group Technology:Importance of batch & job shop production; merits of converting zigzag process layout flow to smooth flow in cellular layout, Production Flow Analysis (PFA) and clustering methods; concept of part families and coding; hierarchical, attribute and hybrid coding; OPITZ, MICLASS and DCLASS coding; FMS; material handling; robots, AGV and their programming; agile mfg; Computer Aided Process Planning (CAPP), variant/ retrieval and generative approach.
SUGGESTED BOOKS:
- S.Kant Vajpay; Principles of CIM; PHI
- Rao PN; CAD/CAM;TMH
- Groover MP; Automation, Production Systems & CIM; P.H.I.
- Rao PN, Tiwari NK, Kundra TK; Computer Aided Manufacturing; TMH
- Alavudeen A, Venkteshwarn N; Computer Integrated Mfg; PHI
- Surendra Kumar; Industrial Robotics & CIM; Oxford IBH.
EXPERIMENT LIST:
- 2D and 3D modeling on CAD software
- Use of CAM software for writing CNC programs
- Study of automatic and semi automatic control system and writing the electrical analogy.
- Production & layout for GT for group of jobs to be manufactured
- A case study / tutorial using CAPP Software
- Writing M & G codes for given operations.
- Robot and AGV programming
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