ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Aiming at the problem of machining inefficiency caused by narrow path interval in the current five-axis CNC machining process of triangular mesh surface, a tool path generation algorithm for variable path interval in machining was proposed. Firstly, with the data reconstruction of triangular mesh, an intersection-algorithm based on KdTree mesh partition was proposed, which achieved fast grid data point acquisition. Then, with analyzing the geometric characteristics of the toroidal cutter and the triangular mesh surface, a method was proposed to maximize the effective cutting radius by changing the tilt angle and optimizing the inclination angle under the condition of no curvature interference. Finally, a discrete model of toroidal cutter was established based on the characteristics of triangular mesh surface, and the corresponding interference detection and correction method was also put forward. The simulation results showed that the optimization method of path intervals can significantly improve the machining path intervals compared with the existing methods under the same machining conditions and the presented method of checking and correcting the tool-interference can effectively avoid the local interference of cutter bottom and the global interference of cutter arbor. It can be seen that the methods proposed had upper theoretical significance and practical application value in improving the efficiency of five-axis CNC machining for triangular mesh surface.