Machining method for bearing seat

Abstract

The invention provides a processing method of a bearing seat with high machining precision of the inner ball hole and small spherical error, comprising the following steps: (1) preparing the blank of the bearing seat; (2) turning the bottom plane; (3) drilling the nozzle hole, Tapping nozzle hole thread; (4) Ball hole and oil groove in the car: (5) Rotate the workpiece shaft, and use the rotating diamond grinding wheel to grind the inner ball hole of the bearing seat, the grinding amount is 0.05-0.15mm; (6) The diamond grinding wheel stops advancing Grinding the inner ball hole for 10-20 seconds; the present invention uses a diamond grinding wheel for fine grinding and smooth grinding after the bearing seat is machined. The rotating speed of the workpiece shaft is low and the rotating speed of the grinding wheel is high. Continuous cutting, high machining accuracy, surface roughness up to Ra0.4 or less; the bearing seat is also rotating when it is ground by the diamond grinding wheel, and the shape error of the inner ball hole can be controlled within 0.005mm, so that the matching torque between the bearing seat and the bearing The reduction can be controlled at 1‑15N.m.

Description

technical field [0001] The invention relates to the field of bearing seats, in particular to a processing method for bearing seats of outer spherical ball bearings. Background technique [0002] CNC lathes are generally used for profiling processing when processing the inner ball hole of the existing outer spherical ball bearing casting seat, such as figure 1 Because there are two gaps 15 for bearing on the inner ball hole 13, the inner ball hole is processed intermittently, and the processing equipment and tools are easily affected by the intermittent cutting. The surface of the inner ball hole after processing is relatively rough, and the inner ball hole The spherical error and ellipse of the ball hole are large. Contents of the invention [0003] The object of the present invention is to overcome the above disadvantages, and provide a method for machining a bearing seat with high machining precision of the inner ball hole and small spherical error. [0004] In order t...

AI Technical Summary

Problems solved by technology

[0002] CNC lathes are generally used for profiling processing when processing the inner ball hole of the existing outer spherical ball bearing casting seat, such as figure 1 Because there are two gaps 15 for bearing on the inner ball hole 13, the inner ball hole is processed intermittently, and the processing equipment and tools are easily affected by the intermittent cutting. The surface of the inner ball hole after processing is relatively rough, and the inner ball hole The spherical error and ellipse of the ball hole are large

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