The Tool-Path Generate Based On Feature

With the development of Science, Manufacture technology also had an essential improvement in the Numerical Control field. The machining way was developed to the advanced and new way from the old machining style, which was based on the point, line, plane. STEP-NC as a new standard in NC machining fields, had various similar facets with the method based on feature, if we could unite these two facets well, it would have a deep meaning for enhancing machining efficiency and operating easily. For this reason, how to combine STEP-NC with the method based on feature, had been an important aspect in the NC machining research fields.My major work was focused on the point, which how to combine the feature-method with STEP-NC, for this reason, I had done some, the detailed contents were included the following:Firstly, after getting the information from STEP-NC. Classifying the information according to the data format. Technical information was saved as the format of Access Database, Geometrical information was saved as the format of Text. Then, through the Database programming technology, Completed the task of picking-up the data information;Secondly, the feature-method was adopted to describe some tool-paths of typical feature, emphasized on the pocket with the island feature, improve the arithmetic on the tool-path programming, optimized the tool-path. It could reduce the times of raising the tool during the machining. At the same time, for the tool-path which was calculated could work in the machining, Joining in the rule of post processing rule of the tool-path to offset the tool-path, then, a better tool-path could be acquired. For replying the situation which tools did not matching with the one that was appointed, the auto-matching of tool was also a facet in the research. Took the wide machining as the standard, largest diameter as the reference, gave out an arithmetic of getting the largest tool diameter;At last, for creating the NC files, referenced the mode of three-dimensional software which was used widely, to build the NC files. Give an arithmetic which through contrast the data, building the normal format NC files.