兩軸不匹配增益轉角循跡輪廓誤差控制之研究

• Main Authors: Chao-Chang Wang, 王肇璋
• Other Authors: Rong-Shine Lin
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/qecu54

碩士 === 國立中正大學 === 機械工程學系暨研究所 === 102 === With the development of more sophisticated machine tools,how to improve the machining accuracy and processing efficiency is the primary issue.The common sources that makes contour errors includes machining system servo lag,the steady-state contour error caused by mismatched axial servo gains,backlash and friction and so on. This thesis focuses on the corner machining,the tracking contour errors due to machining system servo lags and the steady-state contour error caused by mismatched axial servo gains.In traditional,to improve the cutting errors,mostly change the internal controller parameters,but the process is more complicated,it takes more time to adjust the machine to an ideal state.In this thesis,we hereby developed mismatchd tool-path compensation method,which improved corner tracking contour errors without modifying the controller parameters and reducing the machining feedrate.Calculate the axial servo errors and steady-state contour error in advance,compensate into the original machining tool trajectory,by changing the way to improve the corner tarcking contour error and steady-state contour error,and also improved the processing efficiency. From the data of the actual path imformation retrieving by the machine,this method is demonstrated that a hexagon cutting experiment,in the situation of mismatched axial servo gains,with feedrate 2400(mm/min).The results shows that the average corner contour error can reduced from 0.2385mm to 0.0108mm,improve the ratio of 95.47%,line steady-state contour error can reduced from 0.0318mm to 0.0199mm,improve the ratio of 37.48%.