Target-free automatic measuring device and method for axis pose of tubular part

A technology for automatic measurement and cylindrical parts, applied in the field of precision measurement, can solve problems such as low precision, inability to eliminate interference, multiple solutions to projection relations, etc., and achieve the effects of improving measurement accuracy, good equipment stability, and large data redundancy

Active Publication Date: 2018-09-14
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this method, the interference to the measurement results due to sensor accuracy, vibration and other issues cannot be ruled out. Under this premise, for incomplete elliptical arcs with central angles less than 180°, small measurement noise can cause fitti

Method used

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  • Target-free automatic measuring device and method for axis pose of tubular part
  • Target-free automatic measuring device and method for axis pose of tubular part
  • Target-free automatic measuring device and method for axis pose of tubular part

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail:

[0044] refer to figure 1 , a target-free automatic measuring device for the axial position and posture of a cylinder, including a base 1 , a supporting unit 2 , a measuring unit 3 and a control computer 4 .

[0045] Wherein, the support unit 2 includes a support guide rail 21 , a support tray 22 , a transfer screw 23 , and a transfer motor 24 . Both sides of the upper surface of the supporting guide rail 21 are provided with two parallel guide rails, and the lower part is fixed on the base 1 through the mounting seat. The lower surface of the supporting tray 22 is erected on the supporting rail 21 through the rail slider, and the measured cylindrical piece is placed on the upper surface, so that the cylindrical piece can slide along the supporting rail 21 . A transfer lead screw 23 is arranged inside the support guide rail, the axis of the le...

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Abstract

The invention provides a target-free automatic measuring device and method for axis pose of a tubular part and aims to improve the measurement accuracy of the pose of the tubular part on the premise of automation, non-contact and no target. The method comprises implementation steps as follows: establishing a measurement coordinate system according to the measuring device; controlling a computer toacquire multiple section profiles of the tubular part located on a parallel section through a laser profile sensor; controlling the computer to calculate fitting points of axis of the tubular part and fitting points of busbars on each section; controlling the computer to calculate the pitch angle and the deflection angle of the axis of the tubular part; controlling the computer to calculate comprehensive fitting points of the axis of the tubular part, performing spatial linear fitting on these comprehensive fitting points to obtain pose parameters of the axis of the tubular part. The measuring device and method can be applied to precise measurement of the axis poses of tubular parts in an automatic tubular part assembly process to facilitate adjustment by a pose adjusting mechanism.

Description

technical field [0001] The invention belongs to the technical field of precision measurement, and relates to a device and method for automatic measurement of the axis position and posture of a cylindrical part, which can be used for automatic measurement of the position and posture of the cylindrical part in the production process. Background technique [0002] Cylindrical parts are one of the most basic parts in industrial production. When upgrading the automation of spacecraft assembly, pipeline welding and other processes, it is often necessary to accurately and automatically measure the position and orientation of the cylindrical part axis and adjust it . Since the measurement accuracy will directly affect the accuracy of subsequent processing, there is a high requirement for the precision of the measurement process. At the same time, in order to meet the needs of unmanned chemical factories in the future, the new measurement technology should get rid of the dependence ...

Claims

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Application Information

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IPC IPC(8): G01B11/00
CPCG01B11/002
Inventor 仇原鹰张解语芦顺利段学超盛英赵泽宁博程培涛米建伟
Owner XIDIAN UNIV
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