1问题的提出在各行业所使用的机械设备中，利用丝杠实现纵横向的自动或手动进给运动是必需的，多数设备的进给量通常都是由刻度盘来显示的，既直观精确度又高，被机械制造业广泛采用。但有些非标设备、专用设备或通用设备的某些部分的送给运动是没有刻度显示的，如面粉机... A problem raised In the mechanical equipment used in various industries, the use of screw to achieve vertical and horizontal automatic or manual feed movement is required, most of the equipment is usually fed by the dial to display, both intuitive and accurate Degree is high, widely used by machinery manufacturing industry. However, some non-standard equipment, special equipment or general equipment to send some parts of the movement is not displayed on the scale, such as flour machine ...