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加工过程中尺寸的自动控制关键取决于控制刀具和工件之间相对位置的闭环设计。其实,环外的因素和环内的一些因素一样,会影响该系统的精度,这都是常有的事。这样的因素包括有刀具的变形。刀具磨损,有时还包括有横向丝杠的侧向间隙和螺距误差(虽然高精度滚珠丝杠和螺母的问世已减少了螺距误差的意义)、当然,控制工件尺寸的理想解决办法,是要能在加工过程中测量正在加工着的表面。因此,全世界研究工作者的当务之急就是搞积极测量。
The key to the automatic control of the machining process is the closed-loop design that controls the relative position of the tool and the workpiece. In fact, the factors outside the ring and ring some of the same factors that will affect the accuracy of the system, which are commonplace. Such factors include the deformation of the tool. Tool wear, and sometimes lateral clearance and pitch error of the cross leads (although the advent of high precision ballscrews and nuts has diminished the significance of pitch errors). Of course, the ideal solution for controlling the size of a work piece is to be able to The surface being machined is measured during machining. Therefore, the top priority for researchers worldwide is to make positive measurements.