Molding type self-lubrication centripetal joint bearing manufacturing method

Abstract

The invention discloses a molding type self-lubrication centripetal joint bearing manufacturing method. The molding type self-lubrication centripetal joint bearing manufacturing method comprises the steps that an outer ring semi-finished product and an inner ring are machined, the outer ring semi-finished product is provided with a penetration hole, and the end portion of the penetration hole is provided with a radial inwards-convex stop edge; the inner ring is placed in the penetration hole, the outer ring semi-finished product is extruded, the stop edge is attached to the inner ring spherical surface in a contact manner through extrusion, and accordingly the outer ring semi-finished product can be positioned through the inner ring; a rotation face outside the outer ring semi-finished product is machined; the two ends of the outer ring semi-finished product are machined, accordingly the margin is cut away, and the margin at least comprises the stop edge; and a cavity formed between the outer ring and the inner ring is filled with lubricating materials. The molding type self-lubrication centripetal joint bearing manufacturing method has the following advantages that the problem about difficult machining and positioning due to existence of a cavity is solved, coaxiality and the symmetry degree of machined products are guaranteed, and accordingly the precision of the radial close-fit degree t value and the circumferential close-fit degree delta value of bearings are accurately controlled.

Description

technical field [0001] The invention relates to a method for manufacturing a radial joint bearing, in particular to a method for manufacturing a molded self-lubricating radial joint bearing. Background technique [0002] The molded self-lubricating layer radial spherical plain bearing is a kind of spherical sliding bearing. Its typical feature is that there is a layer of low friction and high load bearing inseparable from the outer ring in the cavity between the inner ball of the outer ring and the outer spherical surface of the inner ring. , Wear-resistant lubricating material, the inner ring can swing flexibly during use without lubrication. An important evaluation index of the molded self-lubricating layer radial spherical plain bearing is the accuracy of the cavity injected with lubricating material, that is, the radial tightness and circumferential tightness. Radial tightness refers to the gap value t formed between the arc curve of the inner ring of the outer ring and...

AI Technical Summary

Problems solved by technology

Due to the existence of the cavity, subsequent processing and positioning are difficult, resulting in poor coaxiality and symmetry of the processed product, and poor precision of the radial tightness t value and circumferential tightness δ value of the bearing.

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