Method for machining soft aluminum part threads through turning

Abstract

The invention discloses a method for machining soft aluminum part threads through turning. The method comprises the following steps that a cooling liquid with relatively strong viscosity is selected;a thread blade with the thread pitch larger by 1 grade is selected to replace a thread blade with the thread pitch required by normal machining; a lateral cutter feeding mode is adopted, and the tooth-shaped angle, which is smaller than a rear angle, of the blade is fed for machining; the cutting parameters comprise the following parameters of the thread single-cycle back cutting depth ap being 0.05mm-0.07mm and the linear speed Vc being 55-60rpm; a G76 multi-thread cutting cycle instruction is adopted for thread machining; and the size of the top diameter polish rod of the soft aluminum partthreads is machined in place during thread machining, and the allowance is not reserved. According to the method, the cooling liquid, the blade, the programming mode and the cutting parameters are reasonably selected, so that the whole machining process system for machining the soft aluminum part threads through turning is optimized, the problem of thread rotting of the machined threads of a softaluminum part is effectively solved, and the product quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to the technical field of turning thread. Background technique [0002] When turning the thread, ideally, there should be a margin of 0.1mm to 0.2mm in the size of the thread top diameter polished rod in the previous process. Standard full-profile thread processing is used. When finishing the thread, such as figure 1 shown, threaded inserts (see figure 2 ) Two cutting edges a and b will participate in cutting, it can cut out the entire thread profile including the crest, cutting edge a ensures the correct thread profile, and cutting edge b ensures the correct thread crest. [0003] However, due to the material characteristics of soft aluminum (such as LF21R / LF21, etc.), it has good ductility and poor plastic deformation resistance, and the temperature during processing is too high, it is very easy to stick to the knife, forming built-up edge on the tip of the knife, ...

AI Technical Summary

Problems solved by technology

[0003] However, due to the material characteristics of soft aluminum (such as LF21R / LF21, etc.), it has good ductility and poor plastic deformation resistance, and the temperature during processing is too high, it is very easy to stick to the knife, forming built-up edge on the tip of the knife, resulting in such as image 3 , Figure 4 thread rot shown

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