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A stick-slip inertial linear drive with variable preload

A technology of linear drive and pre-tightening force, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. Low, large retraction displacement, etc., to achieve the effect of compact structure, reduced wear and friction

Active Publication Date: 2020-06-02
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing piezoelectric actuator has a large retraction displacement in the driving stage, the operating speed of the actuator is low, and there is wear on the contact interface between the mover and the stator

Method used

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  • A stick-slip inertial linear drive with variable preload
  • A stick-slip inertial linear drive with variable preload
  • A stick-slip inertial linear drive with variable preload

Examples

Experimental program
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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] A stick-slip inertia linear drive with variable preload includes a drive mechanism, a mobile platform 5 and a base 8; the drive mechanism 1 includes a drive foot 11, a drive unit 12, a preload control unit 15 and a bracket 16;

[0017] The drive unit 12 is affixed to the pre-pressure control unit 15, the pre-pressure control unit is affixed to the support 16, the drive unit 12 is affixed to the support 16, the drive unit 12 is affixed to the driving foot 11, and the support 16 is installed on the mobile platform 5 and It can move with the mobile platform 5, the mobile platform 5 is installed on the base 8, the guide rail 9 is set on the base 8, the driving foot 11 is controlled by the drive unit 12 and the pre-pressure control unit 15 and can contact and separate from the guide rail 8, and the guide rail 8 is driven by Foot 11 drive.

[0018] ...

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PUM

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Abstract

A preload force-changing stick-slip inertial linear actuator relates to a linear actuator comprising a driving mechanism, a moving platform and a base, wherein the driving mechanism comprises a driving foot, a driving unit, a pre-pressure control unit and a bracket; the driving unit is fixedly connected to the pre-pressure control unit that is fixedly connected to the bracket, the driving unit isfixedly connected to the bracket and the driving foot, the bracket is mounted on the moving platform and can move with the moving platform, and the moving platform is mounted on the base. The preloadforce-changing stick-slip inertial linear actuator, which has compact structure and is easy to install, effectively reduces the friction between the mover and the stator in the retreating stage, improves the running speed and reduces the wear of the contact interface between the mover and the stator.

Description

technical field [0001] The invention relates to a linear drive, in particular to a stick-slip inertial linear drive with variable preload. Background technique [0002] With the rapid development of micro-nano technology in my country, the research objects are continuously refined, and higher requirements are put forward for the accuracy, stroke, and volume of the driving source. The piezoelectric actuator with micro-nano positioning accuracy has become an ideal driving source. Among them, the piezoelectric stick-slip driver is driven by friction force. Under the excitation of the sawtooth drive voltage signal, the difference between the static and dynamic friction force caused by the asymmetric vibration of the piezoelectric vibrator is used to drive the object to produce a small displacement. It has broad application prospects in precision machining, micro-robots, and cross-scale precision positioning. However, the retraction displacement of the existing piezoelectric act...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/04H02N2/06
Inventor 叶锦宗李锦棒崔玉国蒋世宇
Owner NINGBO UNIV
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