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Ultrasonic linear motor

A linear motor, ultrasonic technology, applied in generators/motors, electrical components, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve problems such as inaccuracy, reduce manufacturing costs, and reduce size , Improve the effect of adjustment accuracy

Active Publication Date: 2010-05-19
PHYSIK INSTR PI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But they are imprecise in the positioning of the moving parts and cannot be scaled down arbitrarily

Method used

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  • Ultrasonic linear motor
  • Ultrasonic linear motor
  • Ultrasonic linear motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] according to figure 1 , a proposed ultrasonic motor 1 has an ultrasonic oscillator 2 which is arranged in a holder 3 . The oscillator 2 is formed by a plate 4 which has parallel, right-angled side faces (main faces) 5 , end faces 6 and side faces 7 and 8 .

[0022] Said motor 1 comprises a movable part 9 cooperating with at least one guide rail 10 . The movable part 9 consists of two friction elements 11 and 12 which are connected to each other by means of a compression spring 13 , wherein each friction element is pressed against a corresponding side 7 and 8 of the plate 4 .

[0023] The compression spring 13 has specific fastening points 14 and 15 for holding the friction parts 11 and 12 . Furthermore, the compression spring can have a link 16 on which the movable part 9 of the guide rail 10 slides.

[0024] In the proposed motor, the sides 7 and 8 of the plate 4 are designed as faces 17 and 18 inclined at an angle γ with respect to the longitudinal plane of symmetr...

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PUM

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Abstract

The invention relates to an ultrasonic linear motor (1) comprising a plate-type ultrasonic oscillator (2) with two planar parallel main faces, two end faces and two lateral faces and a displaceable element (9) that engages with at least one guide rail (10) and has two friction parts, said element interacting with the ultrasonic oscillator to cause friction via the lateral faces of the friction parts. The lateral faces of the ultrasonic oscillator are planar and are inclined at the same angle in relation to a longitudinal plane of symmetry, in such a way that the intersection lines between theplanes of the lateral faces and the longitudinal plane of symmetry run parallel to the main faces of the ultrasonic oscillator. The friction parts of the displaceable element are interconnected by springs.

Description

technical field [0001] The present invention relates to an ultrasonic linear motor and can be used in an inexpensive optical precision system or the like. Background technique [0002] Ultrasonic linear motors are known which have an ultrasonic oscillator in the form of a small plate, to which friction elements are fastened (see eg EP 1267425A). The pressing device is designed in such a way that the force exerted on the friction element is completely transmitted to the linear ball bearing of the moving part. This increases frictional losses and makes it impossible to use inexpensive sliding bearings in such electric machines. [0003] Ultrasonic linear motors are also known in which the moving part comprises an ultrasonic oscillator (see eg EP 0601671A1). In these motors, ultrasonic motors form a guideway for moving parts. For these motors no linear ball bearings are required. [0004] A disadvantage of these electric machines is that the oscillator is structurally compl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/09H10N30/00H10N30/20
CPCH02N2/04H02N2/026H02N2/002
Inventor 阿里克塞·维什涅夫斯基沃拉迪米尔·维什涅夫斯基
Owner PHYSIK INSTR PI