一种基于极坐标机床的圆柱齿轮免校正在线测量坐标系确定方法

By employing a calibration-free online measurement method for polar coordinate machine tools, and utilizing the least squares method and particle swarm optimization algorithm to determine the measurement coordinate system of cylindrical gears, the error problem caused by repeated disassembly and assembly during cylindrical gear machining is solved, thereby improving measurement efficiency and accuracy.

CN117532084BActive Publication Date: 2026-07-17NANJING GONGDA CNC TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING GONGDA CNC TECH
Filing Date
2023-12-01
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, repeated disassembly and assembly during the machining of cylindrical gears can lead to errors, and traditional measurement methods are inefficient and difficult to guarantee accuracy.

Method used

A calibration-free online measurement method based on polar coordinate machine tools is adopted. The measurement coordinate system of the cylindrical gear is determined by fitting the plane with the least squares method and fitting the cylindrical surface with the particle swarm optimization algorithm. The coordinate system includes the measurement end face point and the tooth tip cylindrical surface point. The intersection point is obtained by solving the simultaneous equations to obtain the measurement coordinate system.

Benefits of technology

This technology enables measurement without disassembly during the machining process of cylindrical gears, avoiding the reduction in accuracy caused by repeated clamping and improving measurement efficiency and accuracy.

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Abstract

本发明涉及数控技术领域,具体为一种基于极坐标机床的圆柱齿轮免校正在线测量坐标系确定方法,基于,,三轴的极坐标机床的加工原理,实现了圆柱齿轮免校正,自动检测偏心偏摆,并在状态下,进行在线测量;选取圆柱齿轮上端面点和齿顶圆柱面点;采用最小二乘法拟合圆柱齿轮上端面;利用随机扰动更新粒子群的位置、动态惯性权重的微粒群优化算法计算由齿顶圆柱面点所在圆柱的轴线方程及其半径;联立圆柱轴线方程和圆柱齿轮上端面方程,计算得到两者之间的交点,获得测量坐标系;本发明有效避免圆柱齿轮因校正,进行反复装夹,无法避免的校正误差导致圆柱齿轮测量精度降低;有效提升了圆柱齿轮尤其是大直径圆柱齿轮在线测量的效率与精度。
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