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

Through experimental modal analysis and chatter stability lobes simulation, some uncertain factors of machine tool system affecting chatter stability lobes were studied. The research obtained: the cutter flute length, the cutter overhang, the cutter tooth number etc. were main cutter geometry factors affecting the chatter stability,；according to actual requirements, cutter overhang should be strictly controlled and cutter parameters should be chosen properly in order to make the system remain high rigidity and cutter tooth number should be chosen reasonably which results in high performance stable milling process. The conclusion obtained has been verified through the industrial example.