Machine tool test circuit for testing trueness of workpiece - has electronic coding for angular displacement on disc supplying signals to comparator

摘要

The test circuit for a machine tool uses ultrasonic waves with a process for automatically adjusting the test head. The results are reproduceable. It uses two test heads with adjustment mechanisms (2,3) operated along spiral shaped slots (5) in a control disc (4). An electronic angular displacement coding module is attached to the control disc. The control disc is driven by a reversible motor unit. There is a comparator with digital display and a coding switch.