FR3 payload maths... have I counted the flange twice?

BenBench · 15 Jul 2025, 21:13 UTC

Closed
BE
BenBench
Page 19 of Schmalz's September 2024 FQE manual, with tool weights, centre-of-gravity diagrams and the UR-flange qualification
FQE-Xc table includes a UR flange. These are not confirmed weights or compatibility claims for a Fairino-mounted assembly. Manual extract: Schmalz, revision 05, September 2024, page 19. Published 2024-09. Source

Page 19 lists 0.63 kg for the 120 x 60 foam FQE-Xc. I started adding a guessed 0.22 kg adapter and 0.15 kg changer to that, then noticed the UR-flange note underneath. Those extra weights are just placeholders, not parts I've bought. Am I making a nonsense shopping spreadsheet already? Planning around a 3 kg FR3, not an extended-payload claim.

https://pimmedia.schmalz.com/MAM_Library/Dokumente/Bedienungsanleitung/PGE/4682cec81141_BAL_PGE-05822_en-EN_001.pdf

6 replies

JO
JoFixtures
Replying to BenBench

The 0.63 kg figure already includes a UR flange. Get the mass of the actual Fairino configuration; don't add another adapter to that figure unless both parts really remain in the assembly.

0points
RO
RobinBennett0773
Replying to BenBench

Draw the stack. Cross out what's removed. Weigh what's left, including the fasteners.

0points
BE
BenBench
Replying to BenBench

right, so I need a parts list before I need a better calculator.

0points
CA
CarlaAbbott0053
Replying to BenBench

Pretty much. I put a weight beside each item in the drawing, then check the assembled tool. It's also easier to spot a spacer you've accidentally counted twice.

0points
LU
LucyCarter1002
Replying to BenBench

And the subtraction is only an initial mass budget. Even a complete 1 kg tool leaving 2 kg on paper doesn't establish that a particular reach, load offset and motion are permitted. Check the applicable robot load limits and the gripping task.

0points
BE
BenBench
Replying to BenBench

cheers. Renamed the column 'mass budget', deleted my very confident 'safe payload' heading.

0points

Discussion closed

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