A method for machining shallow grooves on retaining rings

Abstract

The invention discloses a processing method for a shallow groove on a retaining ring. The steps include the following: step 1: the guard ring is fixed on the rotating shaft of the lathe, the round head turning tool is fixed on the tool, and the round head turning tool is aligned with the outer end of the shallow groove to be machined; step 2: the guard ring is axially arranged. The center line rotates at a speed of 33~45r / min; the round head of the round head turning tool is axially close to the shallow groove, and the approaching back cutting amount is 0.1mm~0.2mm; the 0.4mm unilateral clearance on the round head turning tool The shallow groove is processed by cutting, and the feed rate is 0.1mm / min~0.12mm / min along the radial direction of the guard ring; the shallow groove on the guard ring is processed and formed, and the surface roughness of the shallow groove is Ra1.6~Ra3. 2. It meets the requirement that the roughness of the surface of the shallow groove reaches Ra3.2; it solves the problem that the surface of the shallow groove will be corrugated when the non-standard tool is used for profiling according to the shape of the shallow groove, and avoids the need to use gauze for the shallow groove. The groove surface is polished for a second time, which improves the processing efficiency; Step 3: The round head turning tool rises in the axial direction away from the shallow groove, and then exits from the top of the shallow groove.

Description

technical field [0001] The invention relates to a processing method for a shallow groove on a retaining ring, belonging to the technical field of parts processing. Background technique [0002] In order to meet some requirements, it is necessary to machine shallow grooves on the part retaining ring of aero-engine, such as figure 1 As shown in the figure, due to the poor openness of the shallow groove, the depth of the axial subsidence of the shallow groove is 0.3mm, and the height of the shallow groove above the axial direction is only 4.7mm, and the general tool cannot enter due to its poor openness. , When processing shallow grooves in the prior art, it is necessary to make non-standard tools to carry out profiling according to the shape of the shallow grooves. The roughness of the surface is difficult to meet the requirement of Ra3.2, and it is necessary to use gauze to grind the surface of the shallow groove for a second time, which will reduce the processing efficiency...

AI Technical Summary

Problems solved by technology

[0002] In order to meet some requirements, it is necessary to process shallow grooves on the part retaining ring of the aero-engine, such as figure 1 As shown, due to the poor opening of the shallow groove, and the axial sinking depth of the shallow groove is 0.3mm, while the height of the shallow groove axially above is only 4.7mm, ordinary tools cannot enter due to its poor openness. , when processing shallow grooves in the prior art, it is necessary to make non-standard tools for profiling according to the shape of shallow grooves. After non-standard tools use profiling to process shallow grooves, there will be ripples on the surface of shallow grooves, resulting in The surface roughness is difficult to meet the requirements of Ra3.2, and it is necessary to use gauze to grind the surface of the shallow groove twice, resulting in a decrease in the processing efficiency of the shallow groove

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