Development of practical postprocessor for 5-axis machine tool with non-orthogonal rotary axes

In order to develop a practical postprocessor for 5-axis machine tool,the general equations of numerically controlled(NC) data for 5-axis configurations with non-orthogonal rotary axes were exactly expressed by the inverse kinematics,and a windows-based postprocessor written with Visual Basic was developed according to the proposed algorithm.The developed postprocessor is a general system suitable for all kinds of 5-axis machines with orthogonal and non-orthogonal rotary axes.Through implementation of the developed postprocessor and verification by a cutting simulation and machining experiment,the effectiveness of the proposed algorithm is confirmed.Compatibility is improved by allowing exchange of data formats such as rotational total center position(RTCP) controlled NC data,vector post NC data,and program object file(POF) cutter location(CL) data,and convenience is increased by adding the function of work-piece origin offset.Consequently,a practical post-processor for 5-axis machining is developed.

关于终结和非终结的区别

终结情状和非终结情状是有界情状的两大类,终结情状又分为显性终结情状和隐性终结情状。非终结情状没有诸如变化量或结果的后界,隐性终结情状虽然有,但只是潜在的,只有显性终结情状,其变化量或结果是实现的。三种情状的性质,可以用两个格式来说明,但它们受到限制,不具备普遍性。文中引入了'时'格式和'后'格式作为情状类型判定的主要操作。最后,在从抽象情状向具体情状转换的过程中,一些成分使非终结情状变为终结情状,另一些则使终结情状变为非终结情状。还有一些成分既充当事件的方式或意愿,又充当事件的完结点,从而造成隐性终结情状。