论文部分内容阅读
提出一种基于随动预定位技术的环面蜗杆检测方法，通过建立蜗杆运动与测头运动的对应关系的理论模型，以每个采样点测量的蜗杆实际运动坐标映射下一采样点的测头坐标，再采用时间细分技术的高精度运动控制将测头提前定位到下一采样点，从而实现环面蜗杆加工误差的在线随动测量、特定喉部半径下的实际空间螺旋线测量。通过不同喉部半径下的多条螺旋线构建出环面蜗杆的实际轮廓面形，再与理论模型比对后获得相应的加工误差，根据这种方法设计了上、下位机组成的检测系统。“,”This paper presents a detection method for hourglass worm based on follow-up pre-positioning technolo-gy,by establishing theoretical model of the corresponding relation between the movements of the worm and the probe. The probe coordinate of next sample point is mapped through the actual motion coordinate measured at each sample point. And then the probe is located to the next sample point in advance by using the precision mo-tion control based on time subdivision. This detection method can realize online servo measurement for machining error of hourglass worm and actual space spiral measurement under specific throat radius. The actual surface con-tour of hourglass worm is constructed by helixes in different throat radiuses,then the machining error can be ob-tained by comparing the contour with theoretical model. The detection system,which includes host and slave sub-systems,is designed according to this method.