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What series of quality symptoms does a locating fault trigger in automated projection welding on a flexible projection welding workstation?
Nov 12,2026
The flexible projection welding workstation integrates locating, clamping, welding and inspection into the automated cycle, and the locating condition has a direct impact on weld position and the current path. Once locating goes wrong, the problem usually spreads across quality, equipment and the production line.
I. Locating offset drags weld position and nugget with it
1. Worn or loose locating pins let the workpiece shift in the fixture; the projection does not land at the electrode centre and the nugget deviates to one side.
2. Weld pressure is distributed unevenly, one side is over-fused and the other under-fused, and the torque value fluctuates noticeably.
3. With a larger offset the electrode presses directly on the nut body or the sheet, producing indentations, collapse and spatter.
II. Abnormal locating surfaces and supports cause fit and shunting problems
1. Worn locating surfaces and residual weld spatter leave the workpiece poorly seated, contact resistance rises and heat concentrates locally.
2. Uneven or sunken support blocks and anvils change the contact area between the sheet and the circuit, current shunts and less energy reaches the projection.
3. Slow response of the floating mechanism or pneumatic circuit misaligns the clamping signal and the discharge timing, giving missing welds or premature discharge.
III. Insufficient clamping and fixture rigidity amplify batch inconsistency
1. Clamping force is too low, the workpiece is pushed up or displaced at the moment of discharge, and weld formation becomes inconsistent.
2. Insufficient fixture rigidity or loose connections bring vibration and small displacement during welding, and the defect rate rises in continuous production.
3. One fixture shared by several workpiece variants: after changeover the locating datum is not re-confirmed, so batches tend to drift gradually.
IV. Chain reactions in equipment and line caused by locating problems
1. Locating faults bring repeated rework welding; electrodes and fixtures wear faster and equipment condition gets worse.
2. Offset and shunting keep pushing the parameters up, the energy margin shrinks, and incoming variation more easily turns into batch defects.
3. Locating checks and error-proofing signals alarm frequently, stoppages and manual intervention increase, and efficiency drops.
Wuxi Haifei Intelligent Equipment Co., Ltd. official website: https://www.haifeiwelder.com/
Wuxi Haifei Intelligent Equipment Co., Ltd. has been dedicated to the research and production of flexible projection welding workstations for 17 years. The company has passed the ISO9001 quality management system certification, the national 3C certification and the CE certification. It is a national high-tech enterprise, a Specialized, Refined, Distinctive and Innovative enterprise of Jiangsu Province, a Specialized, Refined, Distinctive and Innovative enterprise of Wuxi City, and a Gazelle enterprise of the Southern Jiangsu National Independent Innovation Demonstration Zone. If you are interested in our flexible projection welding workstations, please contact us: liuyiyu@jshaifei.com.
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Wuxi HAIFEI Intelligent Equipment Co., Ltd.
Wuxi HAIFEI Welding Equipment Co., Ltd.
Add: 28 Shuiyun Road, Yuecheng, Jiangyin, Jiangsu Province, China. (Postal Code: 214404)
Mobile: +86 18915302352
Email: wushijie@jshaifei.com