An artificial joint friction and wear test system swing angle measurement and calibration device

By using a combination of connecting shaft, flange, encoder and laser in the artificial joint friction and wear testing system, the precise calibration of the swing arm angle was achieved, solving the problem of inaccurate swing angle measurement and improving the accuracy and stability of the testing system.

CN117091981BActive Publication Date: 2026-03-31TIANJIN UNIV
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Patent Information

Application Number
CN202310824067.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-07-06
Publication Date
2026-03-31
Estimated Expiration
2043-07-06

AI Technical Summary

Technical Problem

In existing artificial joint friction and wear testing systems, the measurement and control accuracy of the swing arm angle is not high, resulting in large errors and affecting the accuracy and stability of the testing system.

Method used

The device includes a first connecting shaft, a second connecting shaft, a locking sleeve, a special-shaped flange, an incremental encoder, and a laser. By adjusting the relative positions of the connecting shaft and the flange, and using the incremental encoder and laser, the precise calibration of the swing arm angle can be achieved.

Benefits of technology

It improves the accuracy of swing arm angle measurement and control in artificial joint friction and wear testing system, simplifies the operation process, adapts to the calibration requirements of swing arms of different sizes, and improves calibration efficiency and accuracy.

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Abstract

The application relates to a swing angle measuring and calibrating device of an artificial joint friction and wear test system, which is characterized by comprising a first connecting shaft, a second connecting shaft, a locking sleeve, a special-shaped flange, an incremental encoder and a laser instrument, the head of the first connecting shaft is used for fixedly connecting a first swing arm of the artificial joint friction and wear test system, the tail of the first connecting shaft is vertically provided with the second connecting shaft, the second connecting shaft is installed at the upper end of the special-shaped flange, the installation position of the second connecting shaft can be adjusted along a radial direction of the upper end of the special-shaped flange, and the lower end of the special-shaped flange is coaxially provided with the incremental encoder; and the laser instrument is coaxially installed at the center of the upper end of the special-shaped flange. The device can convert the swing of the swing arm of the artificial joint friction and wear test system into the self-rotation of the incremental encoder, so that the swing angle of the swing arm of the artificial joint friction and wear test system can be accurately calibrated.
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