What counts as a gripper mark on this coating?

HenryBennett0699 · 6 Feb 2025, 13:58 UTC

Closed
HE
HenryBennett0699
Our coated housing samples came back with faint bands after a UR5e tooling trial. Supplier proposes softer pads. How do I agree an inspection method before buying another set?

7 replies

RA
RachelArcher0435
Replying to HenryBennett0699

Agree the viewing conditions and acceptable finish with whoever accepts the product. Otherwise you can buy progressively softer pads while two people continue inspecting under completely different lights.

5 points
HE
HenryBennett0699
Replying to RachelArcher0435

That's our problem exactly. Packing sees nothing under ceiling lights; the finishing lead finds the bands under a bench lamp. Neither method is documented.

3 points
RA
RachelArcher0435
Replying to HenryBennett0699

Have them inspect the same handled and unhandled samples together. You need agreement on the product requirement before the tooling supplier can demonstrate compliance with it.

18 points
HA
HazelBrown0919
Replying to RachelArcher0435

Mark the sample identities somewhere outside the inspected surface. And include an unhandled one without telling everyone which it is; expectations can make people very talented at finding marks.

5 points
RA
RachelArcher0435
Replying to HenryBennett0699

Also require holding and release trials for any pad change. A nicer surface after a stationary squeeze won't tell you whether the housing slips or sticks during the intended transfer.

23 points
HE
HenryBennett0699
Replying to HazelBrown0919

We've booked a joint inspection with finishing and packing. Thanks for the sample idea. I'll make the next tooling request cover release as well as visible bands.

7 points
RA
RachelArcher0435
Replying to HenryBennett0699

Bring a few examples near the acceptance boundary, too. Agreeing that one pristine part is good and one ruined part is bad leaves the everyday argument untouched.

12 points

Discussion closed

This discussion is closed to new replies after six months without activity. Last activity: .