Taper bearing installation method using taper bearing test tool

Abstract

The invention relates to a test tooling for a tapered bearing and a mounting method for the tapered bearing and belongs to the technical field of bearing mounting. The tapered bearing (3) is horizontally placed in a cylindrical seat (2), a step (101) contacts with the upper end face of an inner ring (301), a pressure-bearing mechanism contacts with the lower side of an outer ring (302), the matching mode between the lower portion of a pressing shaft (1) and the tapered bearing (3) is the same as the matching mode between the tapered bearing (3) and a shaft (4), and the matching mode between the cylindrical seat (2) and the tapered bearing (3) is the same as the matching mode between the tapered bearing (3) and a box. Firstly, the axial relative displacement between the inner ring (301) and the outer ring (302) is measured by using the test tooling of the tapered bearing, then, the absolute expansion of the shaft (4) where the tapered bearing (3) is located relative to the box in a working state is calculated, and the maximum preloading quantity of the tapered bearing (3) is determined. The test tooling for the tapered bearing and the mounting method for the tapered bearing have the advantages that measurement results are accurate, the preloading quantity is accurate, the mounting accuracy of the bearing is high, and the like.

Description

technical field [0001] The invention discloses a tapered bearing test fixture and a tapered bearing installation method, belonging to the technical field of bearing installation, in particular to a test fixture for accurately measuring the relative displacement of the inner and outer rings of a tapered bearing, and also to a tapered bearing for accurately calculating the preload of the tapered bearing installation method. Background technique [0002] The installation accuracy of the bearing directly affects the service life of the bearing and the equipment using the bearing, especially the tapered bearing of the high-precision reducer, which requires higher installation accuracy of the bearing. It is necessary to ensure that the tapered bearing has no radial clearance and the axial position is accurate. Therefore, it is necessary to preload the bearing when installing the bearing to eliminate the gap between the rolling body inside the bearing and the inner and outer rings,...

AI Technical Summary

Problems solved by technology

[0002] The installation accuracy of the bearing directly affects the service life of the bearing and the equipment using the bearing, especially the tapered bearing of the high-precision reducer, which requires higher installation accuracy of the bearing. It is necessary to ensure that the tapered bearing has no radial clearance and the axial position is accurate. Therefore, it is necessary to preload the bearing when installing the bearing to eliminate the gap between the inner rolling body of the bearing and the inner and outer rings, forming a certain initial pressure and elastic deformation, so as to reduce the actual deformation of the bearing under the working load, thereby improving the support stiffness and improving Rotational accuracy, the preload of the bearing is very important. If the preload is insufficient, the assembly clearance of the bearing itself is too large, and the characteristics of the high-precision gear pair cannot be reflected, and the life of the entire transmission system will be significantly reduced. Similarly, if the preload is too large Large, the assembly interference of the bearing is too large, which will also reduce its life

To calculate the value of preload, it is necessary to measure the relative displacement of the inner and outer rings after the bearing is subjected to an axial load. The current device for measuring the relative displacement of the inner and outer rings has a complex structure, inconvenient operation, and low work efficiency.

[0003] At present, the value of the preload is usually slightly increased by the actual load during work as the preload, but this method does not consider the temperature difference between the shaft where the bearing is located and the box, resulting in the shaft relative to the box. Due to expansion and deformation, there is still an error in the amount of preload, and the assembly accuracy is still insufficient

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