Numerical control machining progressive interpolation method

Abstract

The invention provides a numerical control machining progressive interpolation method. A cutter for using is an end mill; the machining process comprises a side edge progressive interpolation process and a bottom edge progressive interpolation process. Compared with the row cutting and machining method of a traditional ball-end cutter, the bottom edge of a ball-end cutter and the machining surface are in contact, the numerical control machining progressive interpolation method has the characteristics of small contact area, low machining efficiency and the like. According to the numerical control machining progressive interpolation method provided by the invention, the side edge and the bottom edge of a commonly used end mill are in contact with the machining surface at the same time, the contact area is large, the efficiency is high, and the residual quantity is low.

Description

technical field [0001] The invention relates to the technical field of numerical control machining, in particular to a progressive interpolation method for numerical control machining. Background technique [0002] Traditionally, edge strips, ribs, and web parts of complex curved surfaces are processed by ball-end knife cutting. During the cutting process, the tool is always in contact with the processing surface in a local area, which results in serious wear of the local area of ​​the tool, making the tool The durability of the parts is greatly reduced; because the surface of the parts after line cutting generally needs to be polished and trimmed by the fitter, which increases the redundant workload, the most important thing is that the surface structure of the parts after polishing may be over-burned, which will affect the parts. Surface quality and part life. [0003] Affected by the traditional three-coordinate machining thinking, many curved surfaces are processed by t...

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Problems solved by technology

[0002] Traditionally, edge strips, ribs, and web parts of complex curved surfaces are processed by ball-end knife cutting. During the cutting process, the tool is always in contact with the processing surface in a local area, which results in serious wear of the local area of ​​the tool, making the tool The durability of the parts is greatly reduced; because the surface of the parts after line cutting generally needs to be polished and trimmed by the fitter, which increases the redundant workload, the most important thing is that the surface structure of the parts after polishing may be over-burned, which will affect the parts. surface quality and part life

[0003] Influenced by the traditional three-coordinate machining thinking, many curved surfaces are processed by three-coordinate line cutting or five-coordinate fixed swing angle line cutting. This type of processing method is widely used in mold products, and its advantage is that the programming algorithm Simple and general-purpose CAD / CAM software can realize the processing strategy, but its disadvantage is that the processing efficiency is extremely low, and its disadvantages are more obvious under the competitive pressure of frequent product updates; in addition, many CAD / CAM software CAM software only has three-coordinate line-cutting or fixed-swing-angle line-cutting machining strategies for surface processing, because the performance of computer hardware at that time could not keep up with the needs of software development. With the perfection of the latest version of CATIA V5 software and the rapid development of computer hardware, today Several multi-axis linkage surface machining strategies have been introduced, which provide the possibility for the realization of progressive interpolation method in NC machining

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