System for calculating thread pitch

摘要

A system which makes it possible to judge causes of fluctuation in thread pitches is provided. The system which calculates thread pitches includes a first detection part that detects rotation angles of a rotary shaft, a second detection part that detects movement amounts of a feed shaft, and a calculation part that, based on the rotation angles detected by the first detection part and the movement amounts detected by the second detection part, calculates the movement amounts for each rotation of the rotary shaft in forming threads on a workpiece W.

主权项

1. A system for calculating a thread pitch of threads formed on a workpiece by a synchronized operation between a rotary shaft which rotates the workpiece and a feed shaft which feeds a tool, comprising:
a first detection part which detects a rotation angle of the rotary shaft; a second detection part which detects a movement amount of the feed shaft; and a calculation part which calculates the movement amount for each rotation of the rotary shaft when forming threads on the workpiece, based on the rotation angle detected by the first detection part and on the movement amount detected by the second detection part.