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Conical-axis Hooke's hinge

A technology of tapered shaft and hinge body, applied in the field of Hooke hinge, can solve the problem of low positioning accuracy of parallel positioning platform

Inactive Publication Date: 2007-06-20
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defect of low positioning accuracy of the parallel positioning platform in the prior art, a tapered shaft Hooke hinge is provided, so that the positioning accuracy of the parallel positioning platform is greatly improved due to the improved accuracy of the Hooke hinge

Method used

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  • Conical-axis Hooke's hinge

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specific Embodiment approach 1

[0005] Specific Embodiment 1: This embodiment will be specifically described below with reference to FIG. 1 and FIG. 2 . The tapered shaft Hooke hinge consists of a cross point shaft 10, a ball bearing without an inner sleeve 9, a sealing end cover 11, a static hinge body 12 and a dynamic hinge body 13. The two ends of the cross point shaft 10 are conical. The cruciform body formed by being connected together has a No. 1 hole 12-1 on the static hinge body 12, and has No. 2 hole 13-1 on the dynamic hinge body 13, No. 1 hole 12-1 and No. 2 hole 13-1. There is an internal thread 14 on the surface of the inner hole at the outer end, and an external thread is opened on the outer surface of the sealing end cover. The ball bearing 9 is set in the inner cylindrical inner hole of the first hole 12-1 or the second hole 13-1. On the surface, the four conical ends of the cross point shaft 10 are inserted into the inner hole of the ball bearing 9, and the sealing end cover 11 is screwed in...

specific Embodiment approach 2

[0006] Specific Embodiment 2: The present embodiment will be specifically described below with reference to FIG. 1 . The difference between the present embodiment and the first embodiment is that the tip angle α of the cross point shaft 10 is between 55° and 75°. Other components and connections are the same as those in Embodiment 1.

specific Embodiment approach 3

[0007] Specific Embodiment Three: The present embodiment will be specifically described below with reference to FIG. 1 . The difference between the present embodiment and the second embodiment is that the tip angle α of the cross point shaft 10 is 60°. Other components and connections are the same as those in Embodiment 1.

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Abstract

A conical Hooke's hinge comprises a cross tail spindle, a ball-bearing without an inner sleeve, a sealed end cover and static and moving hinge bodies. On the static hinge body is opened a hole No.1 and on the moving hinge body is opened a hole No.2. On the internal hole surfaces at the outer ends of No.1 and No.2 holes are opened internal thread and on the sealed end cover are opened external threads. The ball-bearing is set on the cylindrical external surface at the inner ends of No.1 and No.2 holes. Four conical ends of the cross tail spindle are inserted in the internal hole of the ball-bearing and the sealed end cover is screwed in the internal thread.

Description

Technical field: [0001] The invention relates to Hooke hinges for parallel positioning platforms. The present invention is a divisional application of the patent application No. 031114393 and titled "Six Degrees of Freedom Macro Motion Precision Parallel Positioning Platform and Tapered Shaft Hooke Hinge Used for the Platform". Background technique: [0002] At present, precision operations are increasingly developing towards the nanometer scale, so higher requirements are put forward for precision positioning mechanisms. There is an urgent need for a positioning platform with a large operating stroke space and high positioning accuracy. In my country, the movement stroke of tens of millimeters The positioning accuracy of the current parallel motion platform can only reach the micron level (tens of microns to several microns). The reason is that the Hooke hinge (or spherical hinge) clearance and the connecting rod as the parallel motion platform connection mechanism are first...

Claims

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Application Information

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IPC IPC(8): F16C11/06B25H1/00
Inventor 张秀峰孙立宁
Owner HARBIN INST OF TECH
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