Motor spindle vibration active control apparatus

An electric spindle and bearing technology, applied in electromechanical devices, electric components, electrical components, etc., can solve the problem of rare active vibration control, and achieve the effects of easy assembly and maintenance, improved processing quality, and compact device structure.

Active Publication Date: 2014-05-28
CHONGQING UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

However, it is rare to realize the active control of vibration in practice.
Domestic research on the active control of vibration using piezoelectric ceramics general

Method used

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  • Motor spindle vibration active control apparatus
  • Motor spindle vibration active control apparatus
  • Motor spindle vibration active control apparatus

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Experimental program
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Embodiment Construction

[0019] figure 1 It is a structural schematic diagram of the present invention, figure 2 for figure 1 right view of the image 3 Schematic diagram of the structure of the piezoelectric ceramic driver. As shown in the figure, the active vibration control device for the electric spindle in this embodiment includes a bearing assembly installed on the electric spindle and an adjustable positioning assembly for adjusting the radial positioning of the bearing assembly.

[0020] In this embodiment, the adjustable positioning assembly includes at least two sets of positioning combinations composed of piezoelectric ceramic actuators 2 and elastic elements. The piezoelectric ceramic actuators 2 and corresponding elastic elements are arranged on both radial sides of the bearing assembly; The electroceramic driver 2 and the elastic element are evenly distributed along the circumference of the bearing assembly. The piezoelectric ceramic driver 2 includes a housing 12, a piezoelectric st...

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Abstract

The invention discloses a motor spindle vibration active control apparatus. The apparatus comprises a bearing assembly installed on a motor spindle and an adjustable positioning assembly capable of performing adjustable radial positioning on the bearing assembly. The motor spindle vibration active control apparatus, combined with a proper control method, can realize piezoelectric ceramics based vibration active control of a high-speed motor spindle, and can be adapted to the requirements for support rigidity of different bearings at the same time. When the high-speed motor spindle works, a piezoelectric ceramics actuator can be controlled through the proper control method, the position of a spindle core can be adjusted, and the vibration active control of the high-speed motor spindle can be realized so that the vibration of the high-speed motor spindle is reduced, the part surface processing quality, processing precision and processing efficiency are improved, the seriation and standardization design and manufacture of parts are facilitated, the apparatus is simple and compact in structure, and the assembling and maintenance are easy.

Description

technical field [0001] The invention relates to a vibration control device, in particular to an active vibration control device for an electric spindle. Background technique [0002] Since the 1980s, the emergence of smart materials such as piezoelectric ceramics has provided new methods for active vibration control of machinery. In recent years, new research results have emerged continuously, but most of the content is still in the stage of derivation of theoretical formulas and numerical simulation calculations. For example: using piezoelectric ceramics as actuators, using methods such as independent mode control and optimal control to implement active control on the modes of flexible cantilever beams, etc. However, it is rare to realize active vibration control in practice. Domestic research on the active control of vibration using piezoelectric ceramics generally focuses on the active control of flexible cantilever beams, but there is almost no research on the active c...

Claims

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Application Information

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IPC IPC(8): H02K5/24
Inventor 合烨卢艳杨素陈小安
Owner CHONGQING UNIV
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