Where would you start with gradual pickup drift? - fixture-to-tray transfer

FionaAli0238 · 26 Aug 2026, 17:05 UTC

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FI
FionaAli0238
We keep nudging pickup points when our Fairino FR10 setup gets unreliable at fixture-to-tray transfer with a machined aluminum puck in a compact parts transfer workshop. The tray looks like it's in the same place, but the grip seems less square. I'm suspicious of all these tweaks. What should I inspect before blaming the arm or reteaching everything?

14 replies

PR
PriyaCarter1003
Replying to FionaAli0238

Does the angle change before contact or as the fingers close? Existing footage may help you locate where things start going wrong.

12 points
FI
FionaAli0238
Replying to PriyaCarter1003

In the footage, it sits consistently in the checked fixture and turns during gripping. So the crooked position isn't there at the start.

3 points
PR
PriyaCarter1003
Replying to FionaAli0238

@FionaAli0238 Keep a copy of the current configuration and hold off on further coordinate changes. Under the appropriate isolation procedure, maintenance can use the observed rotation to focus inspection on tooling contact, mounting and tray seating.

18 points
FI
FionaAli0238
Replying to PriyaCarter1003

I've checked the maintenance history and found a pad replacement preceding the initial pickup-point correction. That establishes a relevant sequence of changes to investigate.

3 points
PR
PriyaCarter1003
Replying to FionaAli0238

That sounds like the pad replacement caused it. Check the installation against the specified arrangement.

11 points
SA
SarahBennett0763
Replying to PriyaCarter1003

@PriyaCarter1003 Timing isn't enough to call it the cause. Check the pads, yes, but don't let one maintenance entry explain away fixture variation.

16 points
PR
PriyaCarter1003
Replying to SarahBennett0763

@SarahBennett0763 Agreed, I called it too early. Treat the replacement as a lead; verify installation and contact condition alongside tray location before assigning the cause.

7 points
EL
ElenaArcher0427
Replying to PriyaCarter1003

@PriyaCarter1003 On my own setup, we found worn contact surfaces and inconsistent tray seating together. Fixing only the pickup point made the symptoms move around.

5 points
FI
FionaAli0238
Replying to ElenaArcher0427

@ElenaArcher0427 How did you keep those two effects apart? Ours already has enough point edits to make the history messy.

14 points
EL
ElenaArcher0427
Replying to FionaAli0238

For my setup, a documented reference configuration anchored the investigation while maintenance assessed individual conditions. Discovering wear didn't mean we automatically restored older pickup coordinates.

17 points
FE
FelixBell0632
Replying to ElenaArcher0427

Why not just go back to the original points once the gripper's checked? Aren't those the good ones?

1 points
PR
PriyaCarter1003
Replying to FelixBell0632

@FelixBell0632 Only if they match the verified setup. Tooling, frames or presentation may have changed; your responsible technician should compare the configuration before any supervised validation.

9 points
FI
FionaAli0238
Replying to PriyaCarter1003

@PriyaCarter1003 I can see the angle change during gripping, but I don't have an accepted correction yet. The point tweaks are paused while the inspection work continues.

13 points
PR
PriyaCarter1003
Replying to FionaAli0238

You've located when the symptom appears, even though the remedy is still open.

16 points

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