Grinding tool kit, equipment and method used for rolling surface finishing of tapered rollers

Abstract

The invention discloses a grinding tool kit, equipment and method used for rolling surface finishing of tapered rollers. The equipment comprises a main machine, an outer circulation system, the grinding tool kit and a grinding tool kit clamp. The structure of the main machine comprises a grinding strip assembly rotary type and a grinding sleeve rotary type. The outer circulation system comprises a collecting unit, an arranging unit, a feeding unit and a conveying system. The grinding tool kit comprises a grinding sleeve and a grinding strip assembly, the grinding sleeve keeps coaxial during working, the grinding strip assembly penetrates through the grinding sleeve, a cylindrical spiral groove is formed in the inner surface of the grinding sleeve, and the grinding strip assembly comprises multiple grinding strips which are distributed in a circumferential columnar array manner, and linear grooves are formed in the front faces of the grinding strips. During grinding, under the action of friction and pushing of a spiral groove working face and linear groove working faces, tapered rollers move along the linear grooves and the spiral groove while rotating along the axes of the tapered rollers, and therefore grinding of the rolling surfaces of the tapered rollers is achieved. By means of the grinding tool kit, equipment and method, the size consistency of the rolling surfaces of the tapered rollers can be improved.

Description

technical field [0001] The invention relates to a grinding tool set, equipment and method for finishing the rolling surface of tapered rollers, and belongs to the technical field of precision machining of bearing rolling bodies. Background technique [0002] Tapered roller bearings are widely used in various types of rotating machinery. As one of the important parts of the tapered roller bearing, the shape accuracy and dimensional consistency of the rolling surface of the tapered roller have an important influence on the performance of the tapered roller bearing. At this stage, the known machining process of the rolling surface of tapered rollers is: blank forming (turning or cold heading or rolling), rough machining (soft grinding rolling surface), heat treatment, semi-finishing (hard grinding rolling surface) and finishing Processing, among which the main process method of known rolling surface finishing is superfinishing. [0003] Superfinishing is a fine-grained whetst...

AI Technical Summary

Problems solved by technology

However, when using the above-mentioned equipment and method to grind the rolling surface of the tapered roller, since the linear grooves are distributed on the right conical surface, on the one hand, the circumferences of the large end and the small end of the right conical surface as the base surface of the grinding disc are different, and the linear grooves The number of grooves is limited by the circumference of the small end of the positive conical surface, which affects the number of tapered rollers involved in grinding at the same time, which is not conducive to giving full play to the advantages of comparative processing; on the other hand, during grinding, due to the helical The distance from different positions of the groove to the axis of the grinding disc is different, the rotational speed of the spiral groove is different around the axis of the grinding disc relative to the linear groove at different positions, the rotation speed of the tapered roller is different at different positions of the spiral groove, and the rolling surface of the tapered roller is different. The material removal rate and the wear rate of the working surface of the grinding disc change with the position of the tapered roller in the spiral groove, which affects the improvement of the dimensional consistency of the rolling surface of the tapered roller

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