Automated Compensation of Part Errors Determined by In-Process Gauging.

摘要

An automated method for compensation of part errors determined by in-process gauging using a real-time error corrector (RTEC) is demonstrated. Fast-probing using a touch-trigger probe is used for the on machine gauging. Probing points are interactively selected on a computer-aided design (CAD) program display of the part outline. The numerical control (NC) program to probe the part is automatically generated and down loaded to the machine-tool controller. Errors, deviation from nominal dimensions, in a semifinish cut are determined and displayed using the CAD program. These errors are used to determine corrections, implementated by the RTEC, which modify the tool path during the finish cut. The system has the capability of reducing errors in the finished part to less than the correction resolution which for the machine used is 4 micrometers.