A six-point contact double-row ball roller bearing and its groove processing method and device

Abstract

The invention relates to the field of double-row ball roller processing, in particular to a six-point-contact double-row ball roller and a groove processing method and device thereof. It includes an outer ring, an inner ring, steel balls, and a cage. The inner ring is installed in the outer ring. It is characterized in that the outer side of the inner ring and the inner side of the outer ring are respectively designed with double-row grooves at the same distance, and the double-row grooves on the inner side of the outer ring It is a spherical curved surface ring groove. The double-row groove designed on the outside of the inner ring is a peach-shaped groove ring groove composed of two non-concentric hyperboloids. The steel balls are installed between the outer ring and the inner ring through the cage. The advantage is that the design structure is simple and ingenious. Through the design of the peach-shaped groove and ring groove on the inner ring channel, the previous one-point contact becomes two-point contact, the force on the inner ring changes from one point to two points, and the bearing force of the inner ring becomes Two points mean that the amount of wear is greatly reduced, and the processing method is perfect and reasonable, which solves the serious problem of bearing wear and greatly improves the service life of the double row ball roller.

Description

technical field [0001] The invention relates to the field of processing double-row ball rollers, in particular to a six-point contact double-row ball roller and a groove processing method and device thereof. Background technique [0002] During the use of double-row ball roller bearings, it mainly bears radial force. In the past double-row ball rollers, the pressure on the steel balls in the groove is the upper and lower points when the force is applied. The steel balls and the outer ring The contact is a point contact, and the contact between the steel ball and the inner ring is also a point. When the bearing is used, the outer ring usually does not rotate, and the inner ring rotates, so that there are four points of contact between the upper and lower sides of the double row ball roller. Because the inner ring does not rotate when the double-row ball roller is used, the outer ring rotates, so the wear speed of the inner ring is faster; if you want to improve the wear resis...

AI Technical Summary

Problems solved by technology

Because the inner ring does not rotate when the double-row ball roller is used, the outer ring rotates, so the wear speed of the inner ring is faster; if you want to improve the wear resistance of the bearing, you must strengthen the material process, but the material is better, the process is improved, and the cost is lower. It needs to be greatly increased. Ordinary materials and processes cannot meet the needs, and domestic materials and processes cannot meet the requirements. Only imports will increase the cost.

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