| Individual's scarcity on processing acquisition stressed on unfamiliarity in CAD/CAM revealed in enterprises'NC lathe programmers and operators, and dilemma in NC programming,the paper researched issues on automatic processing program rests on cavity of shell parts. According to the characteristic for processing cavity of shell part, the problem of programming to NC processing was analyed, and method to solve problem was given.1. The parameters for technolegical processing, include tool dia.and stepover distance and floor depth and rotational speed and feed speed, were defined. It is put forward to the basis that choose parameters, the method that choose parameters automatically, and the flow chat that choose parameters for automatic programming sistym.2. It is analysed that tool moving locus to be made in Mastercam for cavity processing, and that Pocketing parameter choosing, and that graph for processing to be made, and that mathod for transforing graph to be made by parametering in Mastercam.3. It is expounded for the function of Mastercam post.It is analysed for difference of orders in different CNC. It is altered that program to be made from post. It is put forward that flow chat for altering program to be made by automatic programming system.4.With processing to shell cavity, it is proven to raise effenciency of programming to CNC processing. And it is possible to choose parameters rationally.For improving effciencey to programming of NC process shell cavity, the study analysis the feasible to system for automatic programming to shell part's cavity process. It is done some things in NC programming well to individual's scarcity on processing acquisition and unfamiliarity in CAD/CAM revealed in enterprises'NC lathe operators. |
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