A device for measuring the relative motion speed of the contact point position of a planetary roller screw

By designing a relative motion speed measurement device for the contact point of the planetary roller screw including a motor, a speed sensor and a grating ruler, the problem of difficulty in measuring the relative motion speed of the main screw and the roller contact point is solved, and high-precision relative motion speed measurement is achieved.

CN115469112BActive Publication Date: 2025-03-21BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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Patent Information

Application Number
CN202211001168.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-19
Publication Date
2025-03-21
Estimated Expiration
2042-08-19

AI Technical Summary

Technical Problem

In the planetary roller screw pair, it is difficult to directly measure the relative motion speed at the contact point between the main screw and the roller, which affects the motion performance and the curvature interference of the thread profile.

Method used

A relative motion speed measurement device for the contact point of the planetary roller screw is designed, including a motor, a speed sensor, a rigid coupling, a bearing and a support, a mobile slide platform, a screw to be tested, a guide rail and a grating ruler. By measuring the rotation speed of the main screw and roller and the displacement of the mobile slide platform, the relative motion speed is calculated.

Benefits of technology

It realizes direct measurement of relative rotation speed, improves measurement accuracy, and accurately measures the magnitude and direction of relative motion speed.

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Abstract

The present invention discloses a device for measuring the relative motion speed of the contact point position of a planetary roller screw, comprising: a motor, a motor seat, a rigid coupling, a speed sensor, a speed sensor seat, a bearing and a support, a movable slide, a screw to be measured, a guide rail and a grating ruler; wherein the motor is arranged on the motor seat; the speed sensor is arranged on the speed sensor seat; the output shaft of the motor is connected to one end of the rigid coupling, and the other end of the rigid coupling is connected to the speed sensor; the speed sensor is connected to one end of the screw to be measured; the other end of the screw to be measured passes through the bearing and the support and the movable slide in sequence; the movable slide is connected to the guide rail through a slider; the grating ruler is arranged on the guide rail. The present invention can directly measure the relative speed, and improves the accuracy of measuring the relative speed.
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