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

Aimed at the modeling difficulty that contour graph of globoidal indexing cam is not expanding, the paper brought forward a new reform method of modeling. The digital model was founded by establishing eligible points, joining points to lines, joining lines to surfaces and molding surfaces to the entity. By building variable numerical group, the CAD could exchange data dynamically in real time with database, while the designing work was carried out. It can realize the share and reuse and online loading of data. The results showed that the method can modify data dynamically and improve the precision, and can provide important data for parts' machining and numerical control programming, sequentially redounding to the further study and manufacture of globoidal indexing cam.