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第三部分 常用驱动系统简介一、驱动系统的分类数控机床的驱动系统主要有两种,即进给驱动系统和主轴驱动系统。从作用看,前者是控制机床各坐标的进给运动,后者是控制机床主轴旋转运动。驱动系统的性能,在较大程度上决定了现代数控机床的性能。数控机床的最大移动速度、定位精度等各项指标主要取决于驱动系统及CNC位置控制部分的动态和静态性能。驱动系统与CNC位置控制部分构成位置伺服系统,伺服系统离开了高精度的位置检测元件,也满足不了数控机床的要求。检测元件的作用是对被控位置量进行不断地检测,反馈到CNC的位置环。例如工作台前后、左右及旋转运动,主轴箱上下移动等。在数控机床上,不仅对单个轴的运动速度和精度的控制有严格要求,而且在多轴联动时还要求各坐标轴有较好的动态配合。
The third part of the commonly used drive system profile First, the classification of the drive system There are two main types of drive system for CNC machine tools, namely the feed drive system and the spindle drive system. From the role of view, the former is to control the machine tool feed coordinates of each movement, the latter is to control the machine tool spindle rotation. The performance of the drive system to a large extent determines the performance of modern CNC machine tools. The maximum moving speed of CNC machine tools, positioning accuracy and other indicators are mainly driven by the drive system and CNC position control part of the dynamic and static performance. Drive system and CNC position control part of the position servo system, the servo system to leave the high-precision position detection components, but also can not meet the requirements of CNC machine tools. Detection of the role of the component is controlled position of the amount of continuous testing, feedback to the CNC position loop. For example, table before and after, about and rotary motion, spindle box up and down movement. On the CNC machine tools, not only the control of the speed and accuracy of a single axis has strict requirements, but also in the multi-axis linkage requires a better dynamic coordination of the axes.