Modularized static stiffness testing device for angular contact ball bearings

Abstract

The invention provides a modularized static stiffness testing device for angular contact ball bearings. The testing device comprises a square box for fixing the testing device, bearings supported by a simulating shaft, an outer ring sleeve sleeved outside the bearings, axial and radial loading devices and axial displacement and radial displacement measuring devices; the axial displacement measuring device can detect whether the bearings are deflected by adopting two sets of displacement sensors; the radial displacement measuring device can detect whether the radial loads borne by the two bearings are the same by adopting two sets of displacement sensors; and the simulating shaft is positioned through a positioning ring and a loading sleeve during axial stiffness test. By adopting the modularized structural design, the device can realize the static stiffness test of the angular contact ball bearings of different size series, and can test axial stiffness and radial stiffness at the sametime. The device has the advantages of simple structure, multiple functions and wide application range, can acquire real stiffness values of the angular contact ball bearings, and has significance for searching the static performance of the angular contact ball bearings and determining reasonable pre-tensioning force of the bearings.

Description

technical field [0001] The invention belongs to the technical field of mechanical design and manufacture, and in particular relates to a static stiffness test device for modularized angular contact ball bearings. Background technique [0002] Angular contact ball bearings have become the most widely used supporting elements in the field of mechanical transmission due to their advantages of being able to withstand axial force and radial force at the same time, high speed, and adjustable preload. Especially in the machine tool industry, angular contact ball bearings Bearings are the main supporting components of high-speed machine tool spindles and ball screws. Since the machine tool spindle is the executive component, the static and dynamic performance of the angular contact ball bearing will directly affect the machining quality and production efficiency of the machine tool, so it is of great significance to study the characteristics of the angular contact ball bearing. [...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a modular angular contact ball bearing static stiffness test device to overcome the lack of a static stiffness test device specifically for angular contact ball bearings in the prior art

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