Methods for detecting errors in numerically controlled machining of sculptured surfaces
- 1 January 1989
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Computer Graphics and Applications
- Vol. 9 (1) , 26-39
- https://doi.org/10.1109/38.20331
Abstract
The numerically controlled (NC) machining of sculptured surfaces is an error-prone process often requiring several attempts before an error-free NC program is produced. A technique designed to move the NC proof process into software is described. The system outputs a color-coded graphics display of the machined surface that shows out-of-tolerance areas. To gain efficiency, surface curvature and cutting-tool size are used as inputs to a surface discretization algorithm, which guarantees that a user-defined level of simulation accuracy is achieved. The simulation time grows linearly in both desired accuracy and in the number of tool movements. In typical test cases, NC programs for complex automotive body panels were simulated and verified in CPU times that ranged between 5 and 30 minutes.Keywords
This publication has 15 references indexed in Scilit:
- Discrete simulation of NC machiningAlgorithmica, 1989
- Numerical estimation of the curvature of surfacesComputer-Aided Design, 1986
- CSG set-theoretic solid modelling and NC machining of blend surfacesPublished by Association for Computing Machinery (ACM) ,1986
- Surface Analysis MethodsIEEE Computer Graphics and Applications, 1986
- Gari: An Expert System for Process PlanningPublished by Springer Nature ,1984
- The use of vectors to simulate material removed by numerically controlled millingComputer-Aided Design, 1983
- An application of color graphics to the display of surface curvaturePublished by Association for Computing Machinery (ACM) ,1981
- Detecting and eliminating collisions in NC machiningComputer-Aided Design, 1978
- B-SPLINE CURVES AND SURFACESPublished by Elsevier ,1974
- SURFACES FOR COMPUTER-AIDED DESIGN OF SPACE FORMSPublished by Defense Technical Information Center (DTIC) ,1967