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A device for testing the fatigue life of flexible bearings with dynamic loading

A flexible bearing and testing device technology, which is applied in the direction of mechanical bearing testing, etc., can solve the problems that cannot be used to detect the fatigue life of flexible bearings, and achieve the effect of simple design structure and improved reliability

Active Publication Date: 2018-10-23
SHANGHAI UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the fact that the existing bearing fatigue life testing machine cannot be used to detect the fatigue life of flexible bearings during work, the invention provides a device for testing fatigue life of flexible bearings with dynamic loading. The core principle is that the loading device and the wave generator are axially Concentric installation, the loading point is always located directly above the long axis end of the wave generator, the load directly acts on the flexspline and is transmitted to the tested flexible bearing, after the load is adjusted and fixed, the tested flexible bearing is rotated to carry out the load during the life test constant

Method used

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  • A device for testing the fatigue life of flexible bearings with dynamic loading
  • A device for testing the fatigue life of flexible bearings with dynamic loading
  • A device for testing the fatigue life of flexible bearings with dynamic loading

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] see Figure 1~Figure 3 , the device for testing the fatigue life of flexible bearings with follow-up loading includes an epicyclic follow-up mechanism and a double independent linkage mechanism. Wheel loading, during the test process, the loading wheel rolls along the surface of the flexible wheel while revolving with the epicyclic follow-up mechanism and loads the flexible bearing through the flexible wheel; the double independent linkage mechanism includes a flexible bearing outer ring rotation drive device and a flexible The inner ring of the bearing rotates the driving device, and the speed ratio of the two driving devices is set according to the test requirements and then starts and stops synchronously.

Embodiment 2

[0025] This embodiment is basically the same as Embodiment 1, and the special features are as follows:

[0026] The double independent linkage mechanism includes a base support plate (15), a flexible bearing outer ring rotary drive device and a flexible bearing inner ring rotary drive device; wherein the flexible bearing inner ring rotary drive device includes a main shaft (8), a driver (11), The wave generator (17), the tested flexible bearing (16) and the counting sensor (9); wheel (4), counting sensor (9) and flaw detection sensor (5); wherein the main shaft (8) is driven to rotate by the driver (11), the wave generator (17) is installed at the front end (22) of the main shaft, and the tested flexible bearing (16) Installed on the wave generator (17), the flexspline (4) is set on the outer ring of the tested flexible bearing; the flexspline connecting rod (3) is fixedly connected with the flexspline (4), and the driver (1) passes The coupling (2) connects the flexspline co...

Embodiment 3

[0033] Such as figure 1 , figure 2 A kind of follow-up loading flexible bearing fatigue life testing device shown includes epicyclic follow-up mechanism and double independent linkage mechanism, turntable (12), moving claws (7, 13), loading wheels (6, 14) and wrapped in Elastic rubber on the outer ring of the loading wheel; the double independent linkage mechanism includes: driver (1, 11), main shaft (8), wave generator (17), flexible bearing (16), flexible wheel (4), shaft coupling (2), flexspline connecting rod (3), flaw detection sensor (5), counting sensor (9, 21) and base support plate (15), driver (1) is connected to flexspline connecting rod through coupling (2) ( 3) Drive the flexible spline (4) to rotate.

[0034] Such as figure 1 , figure 2 As shown, the flexible bearing (16) is installed on the wave generator (17), and the wave generator (17) is an elliptical outer contour coat, and the tested flexible bearing (16) is inserted into the wave generator (17) an...

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Abstract

The invention relates to a servo-actuated loading flexible bearing fatigue life tester, which is characterized in that a loading point is always located directly above the outside of a wave generator long shaft end; loads directly act on a flexible gear, and are transmitted to a tested flexible bearing; the loads are adjusted and fixed, and maintain unchanged while a tested flexible bearing rotates for life test. The device comprises a base bracing plate, a driver, a rotating disk, a mobile jaw, a loading gear, a wave generator, a flexible bearing, a flexible gear, an inspection sensor and a counting sensor; the device can simulate load-carrying and operation conditions of the flexible bearing in a work state, the external diameter range of a testable bearing being phi 40 mm- phi 70 mm, stimulate operation conditions and friction performances of the flexible bearing in a harmonic reducer under certain reduction ratios and loads, and detect the flexible bearing fatigue life within the external diameter range.

Description

technical field [0001] The invention belongs to the technical field of bearing fatigue detection, in particular to a device for testing the fatigue life of a flexible bearing with dynamic loading for a harmonic reducer, which can simulate the operating conditions of a flexible bearing of a certain specification under actual working conditions, and can test The fatigue life of the flexible bearing is obtained. Background technique [0002] The harmonic reducer is mainly composed of wave generator, rigid wheel and flexible wheel and other components. The manufacturing basis of the harmonic reducer is the harmonic transmission. Different from the general transmission, the transmission transmits motion and power through the controllable deformation of the flexible spline and the interaction with the rigid spline. The elliptical cam wave generator equipped with flexible bearings has gradually become the mainstream wave generator used in harmonic reducers. [0003] Harmonic redu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/04
CPCG01M13/04
Inventor 陈晓阳冯戴一楠赵联春
Owner SHANGHAI UNIV
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