Machine vision screwing system, control method thereof, screwing device and medium

By combining the pose information of multiple shooting and conveying mechanisms, synchronous control of the actuator and the workpiece is achieved, solving the problem of low efficiency in vision-guided screw tightening systems when the conveyor belt stops frequently, and improving screw tightening efficiency and positioning accuracy.

CN118081778BActive Publication Date: 2026-06-02SUZHOU GAOCHUANG MOTION CONTROL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU GAOCHUANG MOTION CONTROL TECHNOLOGY CO LTD
Filing Date
2024-02-04
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing vision-guided screw-tightening systems are inefficient when the conveyor belt stops frequently, and are only suitable for static or low-disturbance scenarios, with low positioning accuracy.

Method used

The first and second shooting mechanisms acquire the pose information of the workpiece to be screwed, and combine it with the pose information of the execution mechanism and the conveying mechanism to achieve synchronization between the execution mechanism and the workpiece. The pose information is optimized by weighted coefficient fusion algorithm and Kalman filter algorithm to control the precise alignment between the screw-tightening mechanism and the threaded hole of the workpiece.

Benefits of technology

The screw-tightening operation is completed without stopping the conveyor mechanism, which improves the efficiency and automation level of vision-guided screw-tightening and enhances positioning accuracy.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN118081778B_ABST
    Figure CN118081778B_ABST
Patent Text Reader

Abstract

The application discloses a machine vision screwing system and a control method thereof, a screwing device and a medium. The method comprises the following steps: acquiring image information of a workpiece to be screwed by a first shooting mechanism and a second shooting mechanism; determining first pose information of the workpiece to be screwed according to the image information acquired by the first shooting mechanism, and determining second pose information of the workpiece to be screwed according to the image acquired by the second shooting mechanism; controlling an executing mechanism according to the pose information of the executing mechanism, the pose information of a conveying mechanism and the first pose information of the workpiece to be screwed, so that the executing mechanism and the workpiece to be screwed are speed-synchronized, and the pose error between a screwing mechanism and the workpiece to be screwed is less than a first preset error threshold; and controlling the executing mechanism according to the first pose information, the second pose information and the pose information of the screwing mechanism, so that the pose error between the screwing mechanism and the workpiece to be screwed is less than a second preset error threshold. Therefore, the efficiency and positioning accuracy of screwing are improved.
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