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Error compensation method for hexagonal shaft straightness detection system

A detection system and error compensation technology, applied in the direction of measuring devices, using electrical devices, using electromagnetic means, etc., can solve the problems of inapplicable dynamic model real-time compensation, increased calculation complexity and measurement complexity, etc., to achieve easy implementation and improve Measurement accuracy, effect of eliminating deflection error

Active Publication Date: 2020-11-06
CHINA JILIANG UNIV
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Problems solved by technology

However, as the position of the sensor changes, multiple or multi-position measurements need to be performed, and the computational complexity and measurement complexity increase accordingly, and it cannot be applied to real-time compensation in dynamic models
Most of the traditional methods are based on the circular shaft to obtain the error correction amount, but the existing research lacks the measurement and error compensation of the rotation error of the shaft with irregular surface

Method used

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  • Error compensation method for hexagonal shaft straightness detection system
  • Error compensation method for hexagonal shaft straightness detection system
  • Error compensation method for hexagonal shaft straightness detection system

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Embodiment Construction

[0051] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

[0052] The invention provides a method for compensating the eccentricity error of a pneumatic three-jaw chuck used in a hexagonal axis straightness detection system. For the rotation error caused by the eccentricity of the pneumatic three-jaw chuck in the hexagonal axis straightness detection system, it is divided into two stages of measurement and compensation; the offset in the direction of the three sets of opposite surfaces is obtained by using the principle of subtraction of the opposite surfaces of the hexagonal axis; In the process of measuring the rotation error, the system considers the defle...

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Abstract

The invention discloses a pneumatic three-jaw chuck eccentric error compensation method for a hexagonal shaft straightness detection system. Aiming at a rotation error generated by eccentricity of a pneumatic three-jaw chuck in a hexagonal shaft straightness detection system, the method is divided into two stages of measurement and compensation. Offsets in the directions of the three groups of opposite surfaces are obtained by adopting a hexagonal shaft opposite surface subtraction principle; in the process of measuring the rotation error, the system considers the deflection error generated bythe bending of the shaft, and corrects the deflection error as the measurement quantity in the rotation error compensation equation, so as to construct an error compensation model.

Description

technical field [0001] The invention relates to the technical field of straightness measurement, in particular to an error compensation method for a hexagonal axis straightness detection system. Background technique [0002] Pneumatic three-jaw chuck is a mechanical device that utilizes the radial movement of the movable jaws evenly distributed on the chuck body to realize the positioning and clamping of the workpiece. components. The pneumatic three-jaw chuck is used to clamp the workpiece, the installation process is simple and labor-saving, automatic centering can be realized, and the clamping force is stable and adjustable. As the market demand continues to change, some high-precision equipment has relatively higher requirements for the automatic centering accuracy of the pneumatic three-jaw chuck. However, in actual measurement, factors such as the surface structure of the clamped workpiece and the speed of the drive motor will cause the intersection of the action lin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/31
CPCG01B21/045G01B7/31
Inventor 周娟黄宇杭
Owner CHINA JILIANG UNIV
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