A comprehensive loading test device for planetary roller screw
A technology of loading test device and planetary roller, which is applied in the direction of measuring device, testing of mechanical parts, testing of machine/structural parts, etc. The installation structure of the lead screw is complicated and other problems, so as to achieve the effect of easy processing, reducing the impact problem and large load
Active Publication Date: 2020-06-05
NANJING UNIV OF SCI & TECH
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Problems solved by technology
The ball screw test device described in the patent CN104931253A has problems such as poor precision, severe vibration, inconvenient installation, and low test efficiency during the loading test of the planetary roller screw, which cannot meet the requirements of the dynamic loading test of the planetary ball screw.
The test device described in the patent CN104776992A can only test the static transmission accuracy of the planetary roller screw. The test device described in the patent CN105890895A uses a single hydraulic cylinder for loading. The axial size of the entire test device is too large, and the screw installation structure is too large. Complicated and has a certain impact on the efficiency of the measured screw
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[0032] combine figure 1 - Figure 8 , a planetary roller screw comprehensive loading test device of the present invention, comprising a trapezoidal groove base 1, a drive module, a fixture module, a loading module and a test module, a bottom plate 26 is set on the trapezoidal groove base 1, and a wire is set on the bottom plate 26. The rod clamp, loading module and test module, the drive module is directly fixed on the base, the drive module is directly fixed on the base, the drive module provides torque for the screw, and the screw clamp is used to limit the axial direction of the screw part of the planetary roller screw Movement and partial rotation of the nut, the loading module is used to load the axial force on the screw nut, and the test module is used to test the transmission efficiency and transmission accuracy of the planetary roller screw.
[0033] Wherein the drive module comprises a reducer base 2, a worm gear reducer 3, a servo motor 4, and a safety clutch 5; the...
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The invention discloses a comprehensive loading test device for a planetary roller screw, which is fixedly arranged on a trapezoidal groove base. The test device is composed of a motor driving portion, a screw clamping portion, a hydraulic loading portion and a testing portion, and is characterized in that the driving portion is composed of a servo motor, a worm and gear speed reducer and a safety clutch , and provides torque for an input end of the screw; the screw clamping portion is used for ensuring that a screw portion of the planetary roller screw can only rotate and a nut portion of the planetary roller screw can only move in a straight line; the hydraulic loading portion comprises two hydraulic cylinders installed in parallel manner and simulates load bearing conditions of the planetary roller screw under different operating conditions; and the testing portion comprises a sensor so as to test performance parameters of the planetary roller screw. The comprehensive loading test device can realize accurate loading for the planetary roller screw, so that testing for the transmission accuracy and the transmission efficiency of the planetary roller screw under different loads is realized, and the test accuracy is high.
Description
technical field [0001] The invention relates to a screw loading test device, in particular to a planetary roller screw comprehensive loading test device. Background technique [0002] A planetary roller screw, like a ball screw, is a mechanical device that converts rotary motion into linear motion. Planetary roller screw transmission has the advantages of strong load capacity, long service life, high speed, high acceleration, high precision and smaller lead, and is widely used in aerospace, high-end CNC machine tools, medical equipment, precision instruments, Rail vehicles and industrial robots and other fields. At present, the research on the planetary roller screw at home and abroad is not very sufficient. The research on the planetary roller screw can be carried out through the test method to improve the understanding of the characteristics of the planetary roller screw and promote the improvement of its design and manufacturing level. . [0003] Since the planetary ro...
Claims
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IPC IPC(8): G01M13/02
CPCG01M13/025
Inventor 范元勋程远
Owner NANJING UNIV OF SCI & TECH