Influence Analysis of Machine Tool's turntable angle errors to the roundness of machined hole

摘要

Machining accuracy has always been a key problem to machine tool. Machine errors are caused by a variety of error factors among which the geometric error is a key element. An accuracy model of the 3-axis CNC machine tool is established in this paper with multi-body system (MBS). And based on the accuracy model, the mathematical model of roundness error also built up. At last, the influence of CNC machine tool's turntable angle error to roundness error of machined hole is analyzed.