Numerical control machining tool feeding and retracting track interference check method based on dynamic visualization

Abstract

A numerical control machining tool feeding and retracting track interference check method based on dynamic visualization is characterized in that firstly, through machining operation built by click engineers in a CAM system, a part process model is automatically read, the machining track of the operation is calculated, tool feeding and retracting parameter information included in the operation is obtained, and the operation machining track can be modified by manually inputting the parameter information. Any face in the part model is clicked, interference check is performed on a certain macroelement of the machined track according to the clicked face, and the check condition is instantly fed back to the engineers. The method is good in visualization, good in flexibility, high in accuracy, good in interaction and capable of improving the work efficiency of the engineers, rehandling of the engineers is avoided, the engineers can visually check the interference condition of the machining track and the part, and instant modification is performed.

Description

technical field [0001] The invention relates to a numerical control machining technology, in particular to a method for checking interference of advance and retreat tool tracks in dynamic numerical control machining of aircraft structural parts, in particular to a method for checking interference of advance and retreat tool tracks in numerical control machining based on dynamic visualization. Background technique [0002] Aircraft structural parts are large in size and complex in structure, including a large number of free-form surfaces, intersecting features, and special processing areas. The processing is difficult and the processing cycle is long. For the overall structural parts of large aircraft, the ratio of NC programming time to machine tool processing time reaches 7:1, and the efficiency of NC programming is low, resulting in a waste of machine tool capacity. [0003] For some free-form surfaces and difficult-to-machine areas, engineers often encounter the prob...

AI Technical Summary

Problems solved by technology

Since the current commercial CAD / CAM software does not provide this function, engineers need to spend a lot of time to find interference parts and modify parameters, and often need to use related professional simulation software, which has a large amount of repetitive work, high work intensity and high efficiency. low

[0004] The dynamic advance and retreat tool interference check method can greatly improve the programming efficiency of engineers, especially for some large and complex aircraft structures. Due to the complex structure and many free-form surfaces, craftsmen often need to scroll the screen while carefully observing the changes of the tool path. Check whether there is any interference, the repetitive workload is heavy, and the efficiency is low, which seriously affects the entire processing and production cycle of the parts, which in turn affects the production efficiency and economic benefits of the enterprise

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