USING NONCONTACT THREAD MEASUREMENT TO REDUCE OPERATOR-INDUCED VARIATION

摘要

The traditional approach to thread inspection and calibration utilizes mechanical devices. It's time-consuming, operator dependent, not readily-adaptable to automation (McCarty, 1989), and subject to human error. Many studies have shown that the tolerances for thread gages are not realistic for the variability seen in the inspection process. Yet, this is the most common and widely-accepted practice in the industry.