A retractable positioning device

A technology for telescopic positioning and positioning components, applied in workpiece clamping devices, manufacturing tools, etc., can solve the problems of precision opto-mechanical instruments adjusting the position range, the compression preload can not effectively meet the design requirements, etc., to meet the adjustment and improve the installation. Adjusting accuracy and satisfying the effect of compression preload

Active Publication Date: 2020-05-19
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to many defects in the design structure of the current positioning tool, there is a technical problem that the range and compression pretightening force for adjusting the position of precision optical-mechanical instruments cannot effectively meet the design requirements.

Method used

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  • A retractable positioning device
  • A retractable positioning device
  • A retractable positioning device

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specific Embodiment approach

[0038] Further, see image 3 As shown, as a specific implementation of the retractable positioning device provided by the present invention, the linear bearing assembly 2 includes a linear bearing rod 2-1, a linear bearing seat 2-2, and a compression spring 2-3. A flange is set on the end face of the linear bearing seat 2-2 to be connected to the upper end face of the outer shell 3, and a through hole is set in the center of the linear bearing seat 2-2; the upper end of the compression spring 2-3 is connected to the inner side of the flange of the linear bearing seat 22 Connected, the lower end of the compression spring 2-3 is connected with the spring assembly 4. The top of the linear bearing rod 2-1 is provided with internal threads to connect with the ball support assembly 1, and the bottom of the linear bearing rod 2-1 passes through the through hole of the linear bearing seat 2-2 to connect with the spring assembly 4; The through hole of the linear bearing housing 2-2 reci...

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Abstract

The present invention provides a telescopic positioning device, which comprises a ball support assembly which is in contact with the installation equipment; a linear bearing assembly which can reciprocate in the axial direction is connected with the lower end of the ball support assembly; and a linear bearing assembly which can reciprocate in the axial direction; A spring assembly that is connected and provides a downward preload; a position adjustment assembly that is connected to the lower end of the spring assembly for adjusting the longitudinal height of the ball head support assembly; The positioning assembly for longitudinally guiding and limiting the adjustment assembly; also includes an outer casing, and the linear bearing assembly, the spring assembly, the position adjustment assembly, and the positioning assembly are respectively connected to the inner cavity of the outer casing. The invention realizes a large adjustment range of longitudinal displacement, and its compression pretightening force can effectively meet the installation requirements of large-scale precision optical-mechanical instruments, and effectively improve the installation accuracy of large-scale precision optical-mechanical instruments.

Description

Technical field [0001] The invention belongs to the technical field of installation and debugging of precision instruments, and more specifically, relates to a high-precision retractable positioning device. Background technique [0002] The installation of large precision optomechanical instruments requires high positioning accuracy. How to achieve high-precision positioning requirements puts forward a series of requirements for positioning devices. It is necessary to realize free up and down movement to facilitate installation while ensuring positioning accuracy. At the same time, it is necessary to have a certain pre-tightening force to ensure the rigidity of the support, which places demands on the rigidity of the positioning device. For different optomechanical instruments, the range of the up and down movement of the position, the restrained reaction force after compression, etc., put forward higher design requirements and accuracy requirements for the positioning device. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B11/02
CPCB25B11/02
Inventor 孙敬伟邵亮李剑锋吴小霞宿馨文王建立
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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