摘要
针对高精度数控加工中存在的几何误差、热变形误差和刀具磨损等问题,提出一种多源误差补偿方法(Multi-source Error Compensation Method,MECM).该方法通过高精度测量获取机床误差数据,建立机床空间误差模型、动态热误差模型和刀具磨损模型,并在数控系统中实现实时补偿.试验结果表明,MECM可将加工件的尺寸精度、表面粗糙度和圆度误差分别提高 70.6%、65.5%和 70.2%,验证了该方法的有效性和稳定性.
Abstract
A Multi-source Error Compensation Method(MECM)addresses geometric,thermal,and tool wear errors in high-precision computerized numerical control machining.It measures machine errors,builds spatial,thermal,and wear models,and compensates in real-time within the computerized numerical control system.The experimental results show that the MECM method can improve the dimensional accuracy,surface roughness,and roundness error of the machined parts by 70.6%,65.5%,and 70.2%,respectively,verifying the effectiveness and stability of the method.
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