Gear grinding machine probe position error compensation based on a bi-coordinate system
WEN Yilong
WANG Zhonghou
CHEN Mingzhi
WU Yunlong
YANG Yongming
Abstract：[Objective]To address the problem that traditional error compensation for CNC gear grinding machines ignores probe measuring force error,leading to insufficient measurement accuracy of left and right tooth surfaces,a probe position error compensation method based on a bi-coordinate system was proposed to provide reference for improving the on-line measurement accuracy of gear grinding machines.[Methods]Firstly,based on the tooth profile measurement principle of gear grinding machines and homogeneous coordinate transformation,the probe deflection angle error was equivalent to the position error,and a bi-coordinate system error compensation model was established to provide a basis for error quantification.Secondly,with the independently developed L300G horizontal CNC gear grinding machine as the test platform,on-line measurement tests of multiple sections of involute spur gears were carried out to obtain probe position error data.Finally,the accuracy of the compensation method was verified by comparing with the measurement results of the Gleason350GMS detector.[Results]The compensation method can effectively correct the probe position error caused by measuring force.Before error compensation,the tooth profile accuracy is grade 5-6;after compensation,it stabilizes at grade 4,with an accuracy improvement of 1-2 grades.The results are consistent with the Gleason detection results,which verifies the correctness of the compensation model.
Keywords：Bi-coordinate systemMeasuring force errorMulti-sectionOn-line measurementTooth profile error
Publication Date：2026-04-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 121-128 )