Planetary roller screw pair friction torque measurement device

A friction torque and planetary roller technology, which is applied in the field of measuring devices of planetary roller screw pairs, achieves the effect of strong versatility and simple structure

Inactive Publication Date: 2016-09-21
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Invention patent CN204269365u discloses "A Preload Adjustable Ball Screw Pair Friction Torque Measuring Device". This measuring device can only measure the friction torque of the ball screw pair under one working condition without loading or inclination. The change
At present, there is no relevant device for measuring the friction torque of the planetary roller screw pair under different inclination angles under loading, so this measuring device has practical significance and functions

Method used

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  • Planetary roller screw pair friction torque measurement device
  • Planetary roller screw pair friction torque measurement device
  • Planetary roller screw pair friction torque measurement device

Examples

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Embodiment Construction

[0021] This embodiment is a measuring device for the friction torque of a planetary roller screw pair.

[0022] The working mode of the measuring device of the planetary roller screw pair friction torque in this embodiment:

[0023] At the beginning of the work, the planetary roller screw pair is placed on the bottom plate, and the inclination angle of the bottom plate is adjusted by a jack, thereby changing the inclination angle of the lead screw; then, it is kept at a fixed angle value. When the motor is turned on, the power is transmitted to the lead screw through the pulley mechanism. The lead screw rotates around its own axis and drives the nut to move linearly; when the nut moves linearly, it is loaded by a spring, and the nut not only moves linearly but also rotates itself. When the pull pressure sensor prevents it from rotating, the nut only keeps moving in a straight line without rotating itself. The force received by the pull pressure sensor to prevent the nut from r...

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Abstract

The invention discloses a planetary roller screw pair friction torque measurement device. Friction torque measurement is realized by a base plate, a jack and a tension-compression sensor together. A planetary roller screw pair is loaded by a spring. The tilt angle of the base plate is adjusted by the jack to realize friction torque measurement. A support base is disposed on a guide rail, and slides front and back along the guide rail. The tension-compression sensor is installed between a nut and the support base, one end of the tension-compression sensor is connected with the support base, the other end is connected with the nut, and the tension-compression sensor is used to measure and calculate the comprehensive friction. When a screw rotates, the screw drives the nut to do linear motion, and the tension-compression sensor is connected with the nut and limits the rotation of the nut, and measures the size of friction. The spring is embedded into a retainer cup, and a thrust ball bearing is installed between the retainer cup and the nut, which can avoid the situation in which the spring and the nut directly contact each other to generate fiction to affect the final measurement result. The measurement device is simple in structure, highly universal, and safe and reliable.

Description

technical field [0001] The invention relates to a measuring device for a planetary roller screw pair, in particular to a measuring device for a friction torque of a planetary roller screw pair. Background technique [0002] For the performance of the planetary roller screw pair, the friction torque is one of the important influencing factors, so the measurement of friction force and friction torque plays an important role in the performance evaluation of the planetary roller screw pair. Friction generates a lot of heat during transmission, and the increase in temperature reduces the lubrication effect, resulting in energy loss during transmission, which in turn reduces the performance of the planetary roller screw pair. Friction heat generation has become an important factor affecting the performance of the planetary roller screw pair. Therefore, after its wide application, it is of great significance to measure the friction torque of the planetary roller screw pair under di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 佟瑞庭刘更张鹏涛马尚君张文杰朱忠良
Owner NORTHWESTERN POLYTECHNICAL UNIV
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