解析的手法とデータベースの併用による切削条件選定システム

抄録

This paper describes an optimization method of cutting conditions of milling process by analytical approach with the aid of a tool database system. First of all, a database system for milling operations is proposed. This database system can store not only information of machine tools, tools, and holders, but also the tool assembly state. Cutting conditions can be stored associated with the information of tool assembly and its machining state. Through this database, we can get tool geometry and cutting conditions based on past milling operations for the given milling tasks. Secondly, cutting force and machining error caused by deflection of tooling system are predicted by developed simulation system. It helps the tool selection and the decision of cutting conditions. Machining error is analyzed under various feed rate, radial depth of cut and axial depth of cut to investigate the influence of cutting conditions. Then it was found out the area where machining error becomes constant even if axial depth of cut or radial depth of cut increases. By expressing the relationship between cutting conditions and machining error using multi-regression analysis, it was shown that better cutting conditions could be obtained in the viewpoint of machining error and machining efficiency than the cutting conditions derived from the database.