A method for laser focus calibration of a laser welding machine
By detecting the weld position and performing a cupping test in a laser welding machine, the total offset is calculated and the laser spot position is adjusted, thus solving the problem of unstable laser welding quality and achieving stable welding quality and continuous production on the production line.
CN117161546BActive Publication Date: 2026-04-21SHOUGANG ZHIXIN QIAN AN ELECTROMAGNETIC MATERIALS CO LTD
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Patent Information
- Application Number
- CN202311137677.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-05
- Publication Date
- 2026-04-21
- Estimated Expiration
- 2043-09-05
AI Technical Summary
Technical Problem
The welding quality of laser welding machines is unstable, and existing technology makes it difficult to accurately calibrate the position of the laser focus and the weld center, resulting in unsuccessful welding, production line slowdown, and scrap steel.
Method used
By detecting the weld position, a cupping test is performed by offsetting the laser spot, the total offset is recorded, the center position of the weld is calculated, and the initial position of the laser spot is adjusted using the formula (XY/2=Z) to ensure accurate positioning.
Benefits of technology
This improves the stability of laser welding quality, reduces the probability of welding failure, and ensures continuous production on the production line.
✦ Generated by Eureka AI based on patent content.
Abstract
This application relates to the field of laser welding machine technology and discloses a method for laser focus calibration in a laser welding machine. The method includes: detecting and acquiring the weld position of a first steel plate and a second steel plate; calibrating the initial position of the laser spot based on the weld, such that the initial position is close to or at the center of the weld; shifting the laser spot to one side of the first steel plate and continuously performing cupping tests on the weld; stopping the cupping tests when the weld between the first and second steel plates cracks, and recording the first total shift; controlling the laser spot back to the initial position, shifting the laser spot to one side of the second steel plate, and continuously performing cupping tests on the weld; stopping the cupping tests when the weld between the first and second steel plates cracks, and recording the second total shift; calculating the center position of the weld based on the first and second total shifts. This application can accurately calibrate the position of the laser spot relative to the weld center, ensuring the stability of the welding quality.
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