Device and method for testing precision retaining ability of ball screw assembly

A ball screw pair and precision maintenance technology, applied in the detection field, can solve the problems of ball screw test and detection that have not yet been found, and achieve the effects of convenient operation and detection, good market prospects, and convenient adjustment of loading force

Active Publication Date: 2012-08-01
NANJING UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Device and method for testing precision retaining ability of ball screw assembly
  • Device and method for testing precision retaining ability of ball screw assembly
  • Device and method for testing precision retaining ability of ball screw assembly

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Embodiment Construction

[0016] The invention provides a ball screw pair precision retention test device and method, which can be used for the test and detection of the ball screw pair precision retention.

[0017] to combine figure 1 , a ball screw pair accuracy maintenance test device, including a bed 1, a synchronous belt transmission mechanism 2, an AC servo motor 3, a reducer 4, a head frame 5, a torque sensor 6, a linear guide rail 8, and a measured screw 9 , nut seat 10, nut 11, first group of sliders 12, push plate 13, tailstock 14, fixed plate 15, support plate 16, pull pressure sensor 17, baffle plate 18, hydraulic cylinder 20, second group of sliders 22 , hydraulic cylinder extension rod 23, slide plate 26;

[0018] The head frame 5 is fixedly installed on one end of the bed 1, the reducer 4 is fixedly installed on the head frame 5, the AC servo motor 3 is fixed above the reducer 4, and the output shaft of the AC servo motor 3 is connected with the synchronous belt transmission mechanism 2...

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Abstract

The invention discloses a device and a method for testing the precision retaining ability of a ball screw assembly. A head frame of the device is fixedly arranged at one end of a bed body; an output shaft of an alternating-current motor is connected with an output shaft of a speed reducer through a synchronous belt transmission mechanism; the other end of a tested ball screw is arranged in a mounting hole in a tail frame and can rotate; a fixing plate is fixedly connected with a second group of slide blocks; the second group of slide blocks has two slide blocks; the two slide blocks are respectively locked on two guide rails; the two guide rails are fixedly arranged on the bed body and are parallel to the axis of the tested ball screw; a nut penetrates through the tested ball screw and is fixedly connected with a nut base; the nut base is fixedly arranged on a slide plate; the slide plate is fixedly connected with a first group of slide blocks; and the nut and the slide plate drive the first group of slide blocks to move on the guide rails under the driving of the rotation of the tested ball screw. The device can test and detect the precision retaining ability of the ball screw assembly, is convenient to operate and is reliable in a detection result.

Description

technical field [0001] The invention belongs to the technical field of detection, in particular to a test device and method for accuracy retention of a ball screw pair. Background technique [0002] The ball screw pair is mainly composed of ball screws, balls and ball nuts, which are used to convert the rotary motion of the motor into the required linear motion. The ball screw pair has the advantages of high motion precision, small friction, no backlash, high rigidity, high reversibility for mutual conversion of rotary motion and linear motion, and high efficiency. It is a common moving part of machine tools and is widely used in various Industrial equipment and precision instruments. Ball screw pair accuracy retention: refers to the ability of the ball screw pair to maintain the original accuracy index during the working process. The accuracy retention of the ball screw pair mainly depends on the wear resistance, preload force and dimensional stability. Wear resistance i...

Claims

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Application Information

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IPC IPC(8): G01M13/02
Inventor 陶卫军冯虎田欧屹王禹林李春梅韩军沈嘉禾
Owner NANJING UNIV OF SCI & TECH
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