箱座类零件自动编程系统的形面描述与信息处理

Describing Method for Box-type and Base-Type Parts,which Appropriating to CAPP with NC Automatic Programming

箱座类零件的形面描述与信息处理问题是 CAPP—CAM 系统的难点和关键问题之一,直接影响了工艺过程设计和 NC 自动编程的水平和质量。本文作者在对某纺织机械厂箱座类零件形面特征进行统计分析的基础上,提出了一种基于细节,以面为主,体面合一的形面描述方法,并且建立了相应的公共数据信息库。这种方法可同时满足工艺过程编制,工时定额制定和 NC 自动编程对于数据信息的需要,并且可提高信息的准确性和可靠性。这种方法已在 TFCAPP—CAM 系统中得到应用,取得良好效果。

The features description and information disposal for box-type arid base-type parts is a difficult point and the kernel in CAPP-CAM system,which directly affects the level and quality of process planning and NC automatic progamming.Based on the statistics and analysis to the features description of box-type and base-type parts in a textile machine factory,the writers advance a feature description method which is based on the details, puts the faces first and combines bodies with faces.The relevant public data bases are built.The method can meet the needs of process planning,machining times sctting and NC automatic programming at the same time.It can advance accuracy and reliability of the informations.The method have been used in TFCAPP-CAM system,and good results have been achieved.