2D shifting unit

A plane moving, flat technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, instrument, etc., can solve the problems of complex control logic, high power consumption, slow moving speed, etc. Achieve the effect of simple control logic, low power consumption and low cost

Inactive Publication Date: 2007-12-26
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] From the above analysis, it can be seen that the current planar moving devices driven by piezoelectric or electrostrictive effects basically belong to the clamping and peristaltic motion mode. The main problem of this mode is that the moving speed is slow (generally about 1mm / s); Large; the control logic is complicated; the working surface is limited due to the requirements of the clamp (for example, when using an electromagnet, the bottom plate must be magnetically permeable); the mechanical action of the clamp will make a sound
These problems limit the further expansion of the application field of planar mobile devices

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0044] Embodiment 1: (see Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5)

[0045] The present embodiment has the following components: a square flat frame 5, a cross-shaped plate 6, piezoelectric ceramic sheets 1, 2, 3 and 4 pasted around the frame 5, fastening screws 7a, 7b, 7c and 7d, pasted on ten The piezoelectric ceramic sheet 8 on the front side of the glyph plate 6 and the piezoelectric ceramic sheet 11 on its back side.

[0046] On the upper surface of the frame 5, a groove matched with the cross-shaped plate 6 is opened along the diagonal direction, the cross-shaped plate 6 is embedded therein, bonded with epoxy resin at the bottom of the groove, and then fastened with the fastening screw 7. Four piezoelectric ceramic sheets 1, 2, 3 and 4 are polarized along the thickness direction, and are respectively pasted on the middle of the four sides of the upper surface of the frame 5 with epoxy resin, so that the positive directions of polarization of the four piezoelectric cera...

Embodiment 2

[0048] Embodiment 2: (see Fig. 6, Fig. 7, Fig. 8 and Fig. 9)

[0049] This embodiment has the following components: four completely identical L-shaped frames 14, 15, 16 and 17 cut from a complete square flat frame, cross-shaped plates 18, and clamped by two L-shaped frames. Electric ceramic sheets 21, 22, 23 and 24, fastening screws 19a, 19b, 19c and 19d, clamping screws 26, fixed sheets 27, piezoelectric ceramic sheets 20 pasted on the front of the cross-shaped plate 6 and piezoelectric ceramic sheets on its back side Ceramic sheet28.

[0050] The biggest feature of this embodiment is that the piezoelectric ceramic sheets arranged on the four sides of the square frame are clamped instead of pasted. Its advantages: on the one hand, the overall structure can be miniaturized; on the other hand, the working mode of piezoelectric ceramics is changed from the original transverse mode to the thickness mode, and the electromechanical conversion efficiency is improved. On the upper ...

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Abstract

A planar moving mechanism for robot and planar bench is composed of a flat square frame, a cross-shaped plate with 4 ends fixed to 4 corners of said flat square frame, and several piezoelectric ceramics respectively stuck on 4 side bars of said flat square frame, and the front and back surfaces of said cross-shaped plate. Its advantages are high moving speed and high locating precision.

Description

technical field [0001] The invention belongs to a voltage-driven multi-degree-of-freedom driving device utilizing piezoelectric effect or electrostrictive effect, in particular to a miniature planar moving device that can be used for automatic walking of a micro robot or positioning operation of a workbench. Background technique [0002] In the field of precision machinery, such as active detection, X-Y precision workbench, laser and optical fiber related equipment, and the walking drive of planar motion micro-robots, miniature planar motion motors with compact structure and precise motion are required. At present, this type of motor is mainly realized by an electromagnetic motor plus a screw drive, or by a linear electromagnetic motor. Its structure is difficult to miniaturize. The piezoelectric micro-actuator used in the ultra-precision table can only output motion in the stroke below 1mm. [0003] The current planar moving devices driven by piezoelectric or electrostric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25J7/00B25J5/00H02N2/02G12B5/00
Inventor 李朝东姚华徐实王朝元
Owner SHANGHAI UNIV
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