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Dynamic characteristic adjustable micro-motion platform

A technology of dynamic characteristics and micro-motion, which is applied in the direction of worktables, large fixed members, metal processing machinery parts, etc., and can solve problems such as resonance points and inoperability of micro-motion platforms

Inactive Publication Date: 2015-09-09
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above two problems have been solved, the mechanism will have a resonance point during the working movement, so that the micro-motion platform cannot work at any frequency point. It needs to be adjusted to avoid the resonance point and limit the working frequency range.

Method used

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  • Dynamic characteristic adjustable micro-motion platform
  • Dynamic characteristic adjustable micro-motion platform
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Embodiment Construction

[0026] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0027] Dynamic characteristic adjustable micro-motion platform, including base 1, shrapnel group 201, micro-motion sub-platform 202, outer frame 203, driver, micro-motion workbench 4, tension adjustment mechanism 7, displacement sensor 6 and variable damper 8;

[0028] Both sides of the micro-motion sub-platform 202 are connected to the inner wall of the outer frame 203 through the shrapnel group 201, the shrapnels in the shrapnel group 201 are arranged in parallel, and the length direction of the shrapnel is perpendicular to the micro-movement The direction of motion of the sub-platform 202;

[0029] The outer frame 203 is rigidly fixed to the base 1, and the micro-motion worktable 4 is rigidly fixed to the micro-motion sub-platform 202;

[0030] The driver includes a stator 301 and a mover 302, ...

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Abstract

Provided is a dynamic characteristic adjustable micro-motion platform. The dynamic characteristic adjustable micro-motion platform comprises a base, a spring sheet group, a micro-motion sub-platform, an outer frame, a drive, a micro-motion workbench, a tension adjusting mechanism, a displacement sensor, and a variable damper, the base is fixed on a base plate, the spring sheet group is arranged at two sides of the micro-motion workbench, the length direction of spring sheets is vertical to the moving direction of the micro-motion workbench, the micro-motion workbench is fixed in the base, the micro-motion workbench is provided with the displacement sensor in the feeding direction, the displacement sensor is used for displacement precision detection, a connecting position of the base and the spring sheet group is provided with a tension adjusting module for realizing precise dynamic adjustment of rigidity frequency, and the variable damper is arranged between the micro-motion workbench and the base and can cooperate with the requirement of the rigidity frequency to configure the optimal damping. According to the dynamic characteristic adjustable micro-motion platform, the mechanism rigidity and inherent frequency are changed via the adjustment of the tension, the optimal damping at any frequency point can be set via the variable damper, and the consistent displacement output requirement at any frequency can be realized.

Description

technical field [0001] The invention relates to a precision motion platform, which can be used for precision operation and macro-micro composite high-speed precision compensation. The invention specifically relates to a micro-motion platform with adjustable dynamic characteristics. Background technique [0002] In order to realize one-dimensional precision movement, accurate and stable feed mechanism is particularly important, because it is closely related to the quality of the product. In addition, due to the small size and high precision of the complex optical free-form surface, strict requirements are placed on the micro-feed mechanism. The micro-feed system is the basis for processing such products, and it is widely used in fast-tool servo feed systems, micro-motion worktables, and macro-micro composite platforms. Traditional micro-feeding devices usually adopt a fixed-frequency design, which puts forward extremely high requirements on material characteristics and manuf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25H1/02B23Q1/25
CPCB23Q1/25B25H1/02
Inventor 陈新杨志军白有盾陈新度高健贺云波陈云李成祥
Owner GUANGDONG UNIV OF TECH
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