Method for detecting wear on ultrasonic tools
EP4713661A1Pending Publication Date: 2026-03-25HESSE
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Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2026-03-25
AI Technical Summary
Technical Problem
Existing methods for detecting wear in ultrasonic tools are complex and costly, making them difficult to integrate into production operations, often requiring special tools and expensive devices.
Method used
A method using a high-resolution 2D camera to record and compare images of the ultrasonic tool's profiled working side with stored reference images, determining actual wear through image processing, allowing for timely replacement and reducing unnecessary tool changes.
Benefits of technology
This approach enables cost-effective and efficient wear monitoring during manufacturing, reducing material costs and increasing productivity by accurately identifying when to replace ultrasonic tools, thus avoiding premature replacements.
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Smart Images
Figure DE2024100429_21112024_PF_FP_ABST
Abstract
The invention relates to a method for detecting wear on ultrasonic tools, comprising the following method steps: a displaceable and / or rotatable ultrasonic tool (1) of an ultrasonic joining machine is positioned relative to at least one camera (7.1, 7.2; 8.1, 8.2, 8.3; 10) of the ultrasonic joining machine such that a profiled work side (2, 6) of the ultrasonic tool (1) and / or a profile of the work side (2, 6) are / is provided in a capture region of the at least one camera (7.1, 7.2; 8.1, 8.2, 8.3; 10); then the at least one camera (7.1, 7.2; 8.1, 8.2, 8.3; 10) generates at least one high-resolution 2D image of the work side (, 6) of the ultrasonic tool (1) in a wear state; then the at least one high-resolution 2D image is compared with at least one reference image of the work side (2, 6) of the ultrasonic tool (1) and an actual wear value for the ultrasonic tool is determined by way of image processing; then the actual wear value of the ultrasonic tool (1) is compared with a tool-specific limit wear value; if the actual wear value reaches or exceeds the limit wear value, then measures for changing or for maintenance of the ultrasonic tool (1) are initiated. Furthermore, the invention relates to the use of the method in the ultrasonic-assisted connection of metallic connection partners.
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