一、绪言 为了在计算机数控机床上加工高精度工件,需在其上接入一套装置,以减少机床直线运动误差的影响。这可通过测量导轨移动的直线度误差,并将补偿信号返馈到机床的伺服驱动机构,从而使刀具和工件的相对位置不变。 所接入的装置不仅能消除机床内部误差的影响,也能消除因切削 I. INTRODUCTION In order to process high-precision workpieces on a computer numerical control machine tool, a set of devices needs to be connected to it to reduce the influence of linear motion error of the machine tool. This measures the straightness error of the rail movement and feeds the compensation back to the servo drive of the machine so that the relative position of the tool and the workpiece remains constant. Access to the device can not only eliminate the impact of internal error, but also eliminate due to cutting