System for calculating thread pitch

Patent metadata

Field	Value
Publication number	US-9468985-B2
Application number	US-201514789180-A
Country	US
Kind code	B2
Filing date	Jul 1, 2015
Priority date	Jul 8, 2014
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

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.

First claim

What is claimed is:

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 form…

Assignees

• Fanuc Corp

Inventors

• Tezuka Junichi
• Ogawa Hajime

Classifications

• B23Q15/02 Primary

  Operations & Transport · mapped topic

• G05B19/186

  Physics · mapped topic

• G05B2219/45215

  Physics · mapped topic

• G05B2219/49196

  Physics · mapped topic

• B23G2240/52

  Operations & Transport · mapped topic