Research Of CNC Machining Optimization Base On Stock-remaining

This paper focuses on a study of CNC machining based on the stock-remaining, which includes the process of stock-remaining building and CNC machining based on the stock-remaining.Analysis deeply about formation process of the toolpath in roughing,semi-finishing and finishing.Propose a tool combination optimization program based on the stock-remaining,the result is proved good.The paper discusses the concept of stock-remaining and building process in detail.Cutter location surfaces and protect surfaces are defined,EZmap model which is the basic geometry of stock-remaining is deeply analysed. Some geometric data and digital grid point is applied included by EZmap model to rocord stock-remaining,and the updating process of stock-remaining in detail is described.Toolpath generation principle is discoursed systematically in rough, semi-finishing and finishing based on stock-remaining. The manufacturing cells are determined and made into the cutter regions by stock-remaining.The toolpath is calculated in the cutter region.In semi-finishing,the cutter region can be gotten by a method which lower the processing layer to the specific number.For the toolpath consisteny,the guide plane method is applied in semi-finishing and the principle of the guide plane method is studied thoroughly.Z-constant is applied used to be toolpath in finishing based on the stock-remaining.Cutter region is partitioned by climb milling.A solution is proposed to optimize the combination of tools based on stock-remaining and a particular cavity is used as an example. The cutter region is described to get the fesible tool set.Unnecessay tools are eliminated by availability screening for getting some better tool combination.The paper uses CAM to simulation machining on these tool combination and compares the machining time to obtains the best tool combination.The process of stock-remianing built in the machining is described at the same time. The fact shows that the tool optimisedcombination based on stock-remianing have higher efficiency than only machining by single tool.