US Patent No. 9,468,985

SYSTEM FOR CALCULATING THREAD PITCH


Patent No. 9,468,985
Issue Date October 18, 2016
Title System For Calculating Thread Pitch
Inventorship Junichi Tezuka, Yamanashi (JP)
Hajime Ogawa, Yamanashi (JP)
Assignee Fanuc Corporation, Yamanashi (JP)

Claim of US Patent No. 9,468,985

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.