A flat spiral spring fatigue testing machine

By designing a symmetrically arranged rotating shaft and positioning seat structure, combined with a servo motor and reducer, the problems of insufficient driving force and excessive manual intervention in existing equipment are solved, realizing efficient and energy-saving fatigue testing of spiral springs, and improving the versatility and testing efficiency of the equipment.

CN122306384APending Publication Date: 2026-06-30GUANGZHOU AUTO SPRING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU AUTO SPRING
Filing Date
2024-12-23
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing spring fatigue testing equipment has low motor torque, resulting in insufficient driving force, and requires a lot of manual intervention during the testing process, leading to poor equipment versatility.

Method used

A fatigue testing machine for planar spiral springs was designed. It adopts a symmetrically arranged rotating shaft and positioning seat structure, combined with a servo motor and reducer, to achieve symmetrical installation and rapid positioning of spiral springs. The servo motor drives the reducer and rotating shaft to rotate together, providing stable torque and reducing manual intervention.

Benefits of technology

It enables efficient and energy-saving fatigue testing of spiral springs, improves the versatility of the equipment and testing efficiency, and reduces manual adjustment time.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a planar spiral spring fatigue testing machine, comprising a base, a mounting seat fixedly mounted on the base, a reducer fixedly mounted on the mounting seat, a servo motor fixedly mounted at the rear of the reducer, and mounting brackets symmetrically mounted on the left and right sides of the mounting seat. Each mounting bracket is equipped with a rotatable rotating shaft. The output shafts at both ends of the reducer are nested and fixedly connected to the rotating shafts on the mounting brackets, and the rotating shafts on the mounting brackets are arranged symmetrically front to back. In this invention, the rotating shafts on the mounting brackets are arranged symmetrically front to back and have positioning grooves, so that the spiral springs to be tested are symmetrically installed. After one end is placed, the other end needs to be rotated 180 degrees counterclockwise. The servo motor drives the reducer to rotate, and the reducer and rotating shafts rotate together, causing the spiral springs to rotate. The spiral springs at both ends rotate in the same direction, and the forces on both sides cancel each other out. The torque of the servo motor can be smaller, making it more energy-efficient and effective.
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