An involute-based wire impact testing device and method

The wire impact testing device based on involutes solves the problems of wire clamp versatility and stability, enabling accurate testing and efficient clamping of different wires, improving the accuracy of test data and the service life of the equipment.

CN122084411APending Publication Date: 2026-05-26NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Application Number
CN202610550872.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-24
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing wire impact testing fixtures have poor versatility, insufficient clamping stability, and difficulty in ensuring coaxiality, leading to deviations in test data and equipment damage.

Method used

An involute-based wire impact testing device is adopted, including a base, a one-way ratchet, an involute winding assembly, a guide mechanism, and a stop assembly. Utilizing the separable center distance and strong contact uniformity of involutes, combined with a locking mechanism and a guide mechanism, it ensures that the wire transmits impact load along the axis without off-center loading or stress shift.

Benefits of technology

It achieves precise adaptation to wires of different diameters and stiffnesses, reduces test data deviation, improves test repeatability and accuracy, extends equipment lifespan, and simplifies clamping and maintenance processes.

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Abstract

This invention discloses a wire impact testing device and method based on involute curves, belonging to the technical field of wire impact testing fixtures. It solves the problems of poor versatility, insufficient clamping stability, and difficulty in ensuring coaxiality in existing wire impact testing fixtures. The device includes a base with a one-way ratchet on the top, the upper surface of which is machined with radial anti-slip patterns. An involute winding assembly includes a winding reel. A guide mechanism and a stop assembly are also provided on the base. In this invention, during the impact test, one end of the wire to be tested is wound onto the winding reel, and the other end passes through the guide mechanism and connects to the stop assembly. The pendulum of a pendulum impact testing machine strikes the stop assembly, causing the stop assembly to break the wire to be tested. The winding reel adopts an involute contour design, which can accurately adapt to wires of different diameters and stiffnesses. It also ensures that the impact load is transmitted along the wire's axis without stress deviation, reducing test data deviation.
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Citation Information

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