Single-head press-fitting machine for rear axle hub bearing inner ring

Abstract

The invention relates to bearing pressing fit equipment, and discloses a single-end pressing fit machine for a bearing inner ring of a rear axle hub. The single-end pressing fit machine for the bearing inner ring of the rear axle hub comprises a composite oil cylinder, an expansion core mechanism, a transition connection disc, a bearing pressure head used for pressing the bearing inner ring of the hub, and a hydraulic station used for providing power for the composite oil cylinder, wherein the hydraulic station is connected with the composite oil cylinder through an oil pipe; the composite oil cylinder is flexibly connected with a guide rail through a balance crane, the expansion core mechanism is located in a shaft pipe of a rear axle assembly, the bearing pressure head is located outside the shaft pipe of the rear axle assembly, and the expansion core mechanism and the bearing pressure head are connected with the same end of the composite oil cylinder. According to the single-end pressing fit machine for the bearing inner ring of the rear axle hub, the bearing inner ring does not need to be heated, the energy consumption is lowered, the machining cost is lowered, the pressing fit efficiency is improved largely, and meanwhile the single-end pressing fit machine for the bearing inner ring of the rear axle hub is compact in structure, convenient to operate, easy to machine, reliable in performance and high in universality, and has good popularization and use prospects in the vehicle axle industry.

Description

technical field [0001] The invention relates to a bearing press-fitting device, in particular to a single-head press-fitting machine for the inner ring of a rear axle hub bearing. Background technique [0002] At present, there are two assembly methods for the inner ring of the rear axle hub bearing. One is to use the assembly process of thermal expansion and cold contraction, that is, first heat the inner ring of the bearing, then hang the heated inner ring of the bearing on the shaft tube, and put the bearing on it. Press the cylinder, knock the bearing, and press into the bearing position. When using this assembly method in mass production, it is necessary to manually put a large number of bearings into the heating chamber for heating. The preparation time is long, the efficiency is low, the labor intensity is high, and a large amount of electric energy is consumed. This assembly method takes 40 seconds for each assembly, and the power consumption is 10kw / h. Another met...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a single-head press-fitting machine for the inner ring of the rear axle wheel hub bearing to solve the problems of high energy consumption, low efficiency, large occupied space, inconvenient operation, difficult processing, and low pressure in the prior art. The downside of stability

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