Busbar Machine Sample Trial and Acceptance Checklist

A useful busbar trial ends with identified parts, measured results and a repeatable setup. Agree those deliverables before sending samples. A close-up of one successful bend does not show the full part sequence, hole alignment or output through all required operations.

This is a proposed checklist for planning your trial with us, not a report of measured customer results. Start with the busbar machine selection guide if the capacity configuration and tooling are still undecided.

Send one complete trial brief

Include the drawing revision, units, copper grade and temper, starting width and thickness, coating or plating, and the finished-part quantity. Mark hole and slot dimensions, reference datums, bend directions, radii, offsets and short legs. State which dimensions must fit a mating component.

For several part numbers, identify the features most likely to determine the configuration: the most demanding cut, the difficult hole, the shortest clearance between bends and the longest bar to handle. Test each relevant constraint; a trial on the widest part alone may miss another part’s tooling problem.

We agree the sample quantity after reviewing material needed for setup, completed parts and repeat checks. Use production-representative material and identify its lot so the result can be traced.

Agree the acceptance record before running

Put a numerical tolerance or a clear surface requirement against each applicable item. The drawing and agreed acceptance plan supply the limits; this checklist does not assign universal tolerances.

Check	Evidence to record
Incoming bar	Material identification, measured width and thickness, initial surface condition
Sheared blank	Length, end squareness and cut-edge condition before any agreed finishing
Punched holes or slots	Size, position from the stated datum, spacing and burr condition
Finished bends	Unloaded angle, inside radius, leg dimensions and offset height
Overall geometry	Flatness or twist where specified, and fit against the mating part or gauge
Surface condition	Agreed inspection of contact areas, coating and handling marks
Repeatability	Individual results on identified consecutive parts, including reloads
Output	Accepted complete-part count, elapsed time and included operations

For each measurement, record part ID, target, tolerance, instrument, actual value and pass/fail. Retain individual results rather than only an average, and identify any pieces used solely for setup. Where a gauge or mating component defines acceptance, record which one was used.

Run the selected configuration through the complete sequence

For our WM-9400 busbar processing machine, record whether the trial uses the 160, 260 or 300 mm configuration and identify the installed tools. Check punching, shearing and bending requirements separately against that configuration.

Then run the full part, including loading, repositioning and all required station transfers. Check access after each bend and inspect the completed connection. If a tool must be changed during every part cycle, include that change in the cycle time.

After the setup is accepted, repeat the cycle on the agreed sample set. A first-off result and a consecutive run answer different questions. If the proposed process involves batch changeovers, also record setup time and a first-off check after returning to the part.

Request video that supports the measurements

Ask for a continuous view of the complete working sequence, followed by close views of the finished edges, holes and bends. Link the visible part ID to the measurement record. Keep a continuous timed run for output assessment even if a shorter demonstration is prepared for viewing.

Our current WM-9400 video shows punching, end-corner rounding and bending. It is useful for understanding those operations. It does not constitute a shearing-capacity trial or an accuracy test for all three configurations; we record the checks required for your material and drawing separately.

Record the outcome and the next action

If a check fails, keep the failed measurement, document the correction and repeat the affected operation plus the complete-part check. Our busbar defect guide helps structure that investigation.

Close the trial with the agreed configuration, tooling list, settings or program reference, accepted samples and measurement record. Include the finished-part handling and any required deburring in the confirmed process. Electrical assembly verification is a separate workstream: a successful manufacturing trial alone does not establish the assembly’s current rating or insulation performance.

Send your busbar drawing and trial requirements. Leave your email and our engineering and sales team will contact you within 12 hours with a quotation proposal. You can also review the busbar processing category alongside the trial plan.