Grinding method of inner flange of third generation automobile hub ball bearing

Abstract

A third-generation grinding method for an inner flange of an automotive hub ball bearing mainly comprises the following steps: 1, processing the inner flange (1) of the automotive hub ball bearing according to the composite plunge-cut grinding technology of a diamond roller (3) and a form grinding abrasive wheel (2); 2, conducting high-speed form trimming on the form grinding abrasive wheel (2) with the diamond roller (3) of which the outline profile is required to be coincident with the required profile of the inner flange (1), so as to ensure that the profile of the form grinding abrasive wheel (2) is conjugate with that of the inner flange (1); positioning the inner flange (1) with an electromagnetic centerless clamp (4); adjusting the profile of the form grinding abrasive wheel (2) to a grinding position of the inner flange (1), so that a servomotor drives a ball screw to conduct workpiece feeding movement in the axis X of the inner flange (1), the inner flange (1) rotates with the speed of 200 turns per minute to 400 turns per minute and moves radially along the form grinding abrasive wheel (2), and the form grinding abrasive wheel (2) rotates with the linear speed of 60 m / second and grinds in the same direction as the inner flange (1). Therefore, channels, lock mouths, end surfaces and an excircle surface of the inner flange (1) can be formed in one step through composite grinding.

Description

technical field [0001] The invention belongs to the technical field of processing inner flanges of automobile hub bearings, and mainly relates to a third-generation method for grinding inner flanges of automobile hub ball bearings. Background technique [0002] Automobile hub bearings are important rolling bearings for automobiles. They are installed in automobile hubs, and their main function is to bear and provide precise guidance for the rotation of the hubs. It bears both axial load and radial load, and is a very important component. Automobile hub bearings have experienced the first generation of double row angular contact ball bearings, the second generation of double row angular contact ball bearing assemblies with flanges on the outer ring, and developed to the current third generation of double row with flanges on both the inner and outer rings. Angular contact ball bearing assemblies. Due to the significant improvement in the performance of hub bearings, the proc...

AI Technical Summary

Problems solved by technology

Using this processing method of separate grinding in a dispersed process to process the inner flange of the third-generation automobile wheel hub bearing not only needs to add more equipment and a number of operators, but also it is difficult to ensure the groove on the inner flange of the grinding The consistency of machining accuracy between the road, the lock, the end face, and the outer circular surface, the processing efficiency is low, and the pass rate is low, so that the quality of the third-generation automotive wheel bearing products cannot be effectively controlled, which affects the reliability and safety of the vehicle. sex

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