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Method and device for testing accelerated degradation of friction moment of ball screw pair

A technology of accelerated degradation test and ball screw pair, applied in the direction of machine gear/transmission mechanism test, etc., to achieve the effect of convenient operation, reduced test cost, and shortened test time

Active Publication Date: 2014-05-28
江苏启尖丝杠制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic ball screw manufacturing companies and related research units have done a lot of research on ball screw pairs, usually on how to precisely measure the friction torque of the ball screw pair, and have not studied the friction torque with the ball screw pair during the operation process. Experimental research on the degradation process caused by track wear and other reasons, the reason is that the change process of the friction torque of the screw pair is a slow change process

Method used

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  • Method and device for testing accelerated degradation of friction moment of ball screw pair
  • Method and device for testing accelerated degradation of friction moment of ball screw pair
  • Method and device for testing accelerated degradation of friction moment of ball screw pair

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Embodiment Construction

[0021] Device of the present invention and test method are described in conjunction with accompanying drawing, as figure 2 The figure shows that in the test state, the ball screw pair (5) drives the slide plate (6) to reciprocate through the main nut, the main nut seat is fastened on the slide plate (6), the auxiliary nut seat (15) is removed, and the auxiliary nut is The position rod (12) limits its rotation, and one end of the limit rod (12) is fastened on the secondary nut flange, and one end is stuck in the limit groove of the slide plate (6). The loading cylinder (9) is installed on the loading bracket (8) to load the slide plate (6), and the loading bracket (8) is fastened on the base (1).

[0022] Such as image 3 The figure shows that in the measurement state, the ball screw pair (5) drives the slide plate (6) to reciprocate through the auxiliary nut, the auxiliary nut seat (15) is fastened on the slide plate (6), and the main nut seat (11) is removed, the main nut s...

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Abstract

The invention discloses a method and device for testing accelerated degradation of the friction moment of a ball screw pair and belongs to the technical field of detection of ball screw pairs. The ball screw pair is connected with a sliding plate through a replaceable main nut and a replaceable auxiliary nut on the two sides respectively. In the test condition, the ball screw pair drives the sliding plate to reciprocate through the main nut, rotation of the sliding plate is limited by the auxiliary nut through a limiting rod, and load testing is conducted on the sliding plate through a load cylinder. In the testing condition, the ball screw pair drives the sliding plate to reciprocate through the auxiliary nut, the main nut is connected with a pull pressure sensor installed on the sliding plate through a force measurement rod, so that the friction torque between the main nut and a lead screw is obtained accurately. During an accelerated degradation test, axial stepping accelerated loading is conducted on the ball screw pair through the axial load cylinder. Modeling of the friction torque degradation process of the ball screw pair can be achieved through the ball screw pair friction torque data obtained through a short-time acceleration test, and the performance degradation life of the ball screw pair is predicted in a short period of time and with low cost.

Description

technical field [0001] The invention relates to a ball screw pair friction torque accelerated degradation test device and method, and belongs to the technical field of ball screw pair detection. Background technique [0002] The ball screw pair is the main functional component of the feed system of CNC machine tools, and its precision performance determines the accuracy of the feed system of CNC machine tools. In order to ensure the transmission accuracy of the ball screw pair, a pre-tightened ball screw pair is generally used. With the actual working process of the ball screw pair, the friction and wear of the moving parts will lead to the loss of pre-tightening force, and the friction torque will also change accordingly. Therefore, the transmission accuracy of the ball screw pair is closely related to its friction torque. Domestic ball screw manufacturing enterprises and related research units have done a lot of research on ball screw pairs, usually on how to precisely me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02
Inventor 王民梁亚栋胡建忠
Owner 江苏启尖丝杠制造有限公司
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