Document Type
Thesis
Date of Award
10-31-1991
Degree Name
Master of Science in Mechanical Engineering - (M.S.)
Department
Mechanical and Industrial Engineering
First Advisor
Rajesh N. Dave
Second Advisor
Nouri Levy
Third Advisor
Rong-Yaw Chen
Abstract
Some of the drawbacks in inspecting a part using a Direct Computer Controlled Coordinate Measuring Machine are that a programmer has to generate a part program for the inspection process, and such programs have to be generated for each part to be inspected. These programs will be restricted to a kind of CMM, thus preventing the portability of the program t o other kinds of CMM.
If a part program can be generated off line after a part has been designed in a CAD system. an operator can inspect the part without any prior knowledge of the esoteric CMM programming language.
One of the drawbacks in developing a link from Computer Aided Design System to a Coordinate Measuring Machine involves extracting the feature and tolerance information from CAD Database, to be used by the CMM. The CAD Database has to be modified to contain the feature and tolerance information.
In the course of work directed towards this thesis a software package was developed for extracting the pertinent data from AutoCAD database to drive a Coordinate Measuring Machine. Information regarding features, tolerances and reference planes is generated. this is then converted to a Dimensional Measuring Interface Standard (DMIS) part program, a neutral format. which can be downloaded on to any CMM, where the CMM's preprocessor converts it to the machine specific program.
Recommended Citation
Kanoor, Madhu N., "Automation of part inspection in a coordinate measuring machine" (1991). Theses. 2520.
https://digitalcommons.njit.edu/theses/2520
