control unit for the gewindebearbeiten on numerically controlled machine tools (gewindegangversatz compensation)

摘要

In thread cutting on numerically controlled machine tools, the feed of the workpiece relative to the tool is derived from the speed of rotation of the workpiece and brought into effect at a predetermined angle of rotation. This angle of rotation is subjected to advance compensation by a value which is proportional to the quotient of the contouring error and the thread pitch, with the result that the desired feed and the actual feed coincide. IMAGE