Identify datum surfaces, part tolerance, clamping force, and whether the fixture allows stable laser access.
Fixture repeatability before tab welding trials
Questions for locating, clamping, busbar access, thermal behavior, part tolerance, and trial-data ownership before sample welding.
What this file should help verify
Give process owners a checklist for fixture datum, clamping, tolerance, thermal behavior, and sample evidence before tab or busbar welding trials.
- Location tolerance and clamping issues that create trial noise.
- Sample data ownership and acceptance evidence before production design.
- Thermal and access constraints to resolve before supplier comparison.
Use the file to review these engineering decisions.
Record how samples are positioned, measured, and rejected so welding results are not confused with fixture noise.
Review heat input, shielding, residue, and downstream inspection requirements before transferring a trial recipe into production.
Prepare these inputs before contacting a supplier.
- Tab and busbar geometry
- Allowed part tolerance
- Fixture datum
- Clamping method
- Weld access angle
- Inspection standard
Questions this template should answer.
Why does fixture repeatability come before process validation?
Unstable location or clamping can make weld data look inconsistent even when the laser recipe is not the root cause.
What should be photographed during trials?
Fixture datum, clamping status, sample position, weld appearance, cross-section samples, and rejected examples should be captured.