Ch38 Computer-Aided Manufacturing

CAPP Computer Aided Process Planning

automization of process planning

CAD

computer aided design like autoCAD and Solid Works for modelling

Variant System

computer has standard process plans, and minor modifications are made for new part

Initial Graphics Exchange Specification (IGES)

defines geometry data of product, 3D line and surface data

database

has up to date, detailed and accurate data about designs, process etc

Computer Aided Engineering (CAE)

like CAD but runs analysis such as FEMAP

part families

parts that are similar or processed in similar ways

generative system

process plan is automatically generated from sketch, complicated and needs lots of details

Product Data Exchange Specifications (PDES)

solid model based standard

Group Technology

takes advantage of design and processing similarites, make a bunch of similar parts at once

Computer-Integrated Manufacturing (CIM)

use of computers in all aspects of design, process planning, production and distribution

Computer Aided Manufacturing (CAM)

useof computers to assist in all phases of manufacturing, also imports design into manufacturing

advantages of Group Technology

-new parts developed with similar designs -collects data about process, costs can be predicted -standardization of part design, less design duplication -process plan is standardized, cuts costs

communication between drawing platforms

CAD systems must be compatible

STEP

Standard for Exchance of Product Model Data