Machining method for stepped ring grooves of supercharger sliding bearing

Abstract

The invention discloses a machining method for stepped ring grooves of a supercharger sliding bearing. The machining efficiency is higher, and the machining cost is lower. The machining method for thestepped ring grooves of the supercharger sliding bearing comprises the following steps that S1, the supercharger sliding bearing is prepared, the four stepped ring grooves which are evenly arranged in the circumferential direction are to be machined in the supercharger sliding bearing, and the stepped ring grooves are integrally in a fan shape and comprise the upper-layer ring grooves and the lower-layer ring grooves communicating with the outer sides of the upper-layer ring grooves; S2, holes are drilled in the circle centers, to be subjected to fillet machining, of the two ends of each stepped ring groove, and the finish machining allowance of subsequent fillets is reserved; S3, a sinking table is milled at the drilling position of one end of each stepped ring groove to serve as a cutting point of a milling cutter used for subsequent rough machining; and S4, the milling cutters are adopted for conducting rough machining and finish machining on the upper-layer ring grooves and the lower-layer ring grooves correspondingly.

Description

technical field [0001] The invention relates to the technical field of superchargers, in particular to a processing method for a stepped ring groove of a supercharger sliding bearing. Background technique [0002] The supercharger sliding bearing belongs to the bearing precision parts, the structure is as follows Figure 1a - As shown in Figure 2, the material is 15CrNi6, and there are four sets of circumferential stepped ring grooves on the large end surface of the product. The surface of the product needs to be carburized and hardened to improve the surface hardness of the material and obtain better wear resistance; If the angle is small, a smaller end mill or keyway milling cutter has to be used in milling. The tool rigidity is insufficient, and the tool breaks frequently, which affects the overall processing efficiency and the processing cost remains high. [0003] Processing methods such as image 3 As shown, when D10 is used for root cleaning at the end, the margin of...

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Problems solved by technology

[0002] The supercharger sliding bearing belongs to the bearing precision parts, the structure is as follows Figure 1a - As shown in Figure 2, the material is 15CrNi6, and there are four sets of circumferential stepped ring grooves on the large end surface of the product. The surface of the product needs to be carburized and hardened to improve the surface hardness of the material and obtain better wear resistance; The angle is small, so smaller end mills or keyway milling cutters have to be used in milling. The tool rigidity is insufficient, and the tool breaks frequently, which affects the overall processing efficiency and the processing cost is also high.

[0003] Processing methods such as image 3 As shown, when D10 is used for root cleaning at the end, the margin of the fillet part is too large, and the tool is easily broken when the root is cleared here. In actual processing, the milling depth is 0.5mm per knife, resulting in extremely low efficiency and wear on the end face of the tool. quick

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