Device and method for motor assembling through roller bearing without inner ring ribs

Abstract

The invention discloses a method and a device for motor assembling through a roller bearing without inner ring ribs. According to the method, a shaft sleeve with a conical surface is used, the diameter of the upper part of the shaft sleeve with the conical surface is the same as that of a bearing inner ring, and the outer surface of the lower part of the shaft sleeve with the conical surface serves as a tapered transition surface; the bearing inner ring and the shaft sleeve with the conical surface sleeve a rotating shaft; the shaft sleeve with the conical surface is positioned below the bearing inner ring and is in contact with the bearing inner ring; when a stator and a rotor are assembled together, firstly, a bearing roller mounted in an end cover is in contact with the shaft sleeve with the conical surface, and the tapered transition surface at the lower part of the bearing inner ring plays a guiding role, so that accurate positioning of the stator and the rotor is realized; the upper part of the shaft sleeve with the conical surface is cylindrical, and the lower part of the shaft sleeve with the conical surface takes a shape of an inverted circular truncated cone; the top and the bottom of the shaft sleeve with the conical surface are opened, and the middle part of the shaft sleeve with the conical surface takes the shape of a hollow cylinder. The device is simple and reliable in structure, low in cost and high in applicability. The method for assembling is simple, convenient, economic, safe and reliable; the device is low in manufacturing cost, and suitable for mass production.

Description

technical field [0001] The invention relates to the technical field of motor manufacturing, in particular to a method and a device for assembling a motor using an inner ring ribless roller bearing. Background technique [0002] When the stator and rotor of the traction motor are combined, the stator is fixed on the positioning plate, and the rotor is lifted vertically into the inner cavity of the stator by the crane. The bearing is a ribless roller bearing with a split structure. The inner ring of the bearing is sleeved on the rotating shaft, and the rest is installed in the bearing chamber of the end cover and connected with the stator. Since the bearing clearance is small, even less than 0.1mm, the accuracy requirements for the assembly of the stator and rotor are very high. During the assembly process of the stator and rotor, due to the inaccurate positioning, the center of the stator and rotor is not on the same center line, and the inner ring of the bearing on the roto...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a motor assembly method and device using inner ring ribless roller bearings, which can solve the problems existing in the prior art Technical problems such as high difficulty in quality control, high potential safety hazards, low efficiency, poor stability, and low service life of bearings

Images