Case study · Robotic Welding
The Gripper Nobody Sells: A Weld Cell Built Around Hand Built Tooling
A weld cell is only as good as the tool on the arm. For a repeat customer that meant a multi-point vacuum plate, built by hand because no catalog had one.
- 1Custom vacuum tool plate, machined and plumbed in our shop
What you told us
The shop is a metal fabricator that had run a TWA cell before and came back for more. This job was a robotic weld cell, where the robot was never going to be the hard part.
The hard part was the tool. On a weld cell the robot can move all day, but if nothing can pick a large, flat, awkward part, hold it square and set it down the same way every cycle, there is no cell. A two-finger gripper from a catalog does not do that, and neither does a single stock vacuum pad. The shop needed a tool built for their part, from the people who had already built them a cell that ran.
What we built
The heart of the cell is the end-of-arm tool, a custom piece of work. A machined aluminum plate carries a grid of bellows vacuum cups so it can grab a large part across its whole face, with the robot-flange mount at the center and two pneumatic actuator blocks set into the plate.
The back side is where the craft shows: hand-routed pneumatic lines out to banks of stainless push-to-connect fittings, one bank per zone of cups, so the tool grips and releases cleanly zone by zone. It was assembled from machined parts and standard pneumatic hardware on a bench in our shop, plumbed one fitting at a time. It is the kind of tool you build because nobody sells the one your part needs.
Around it is a production weld cell on the shop’s floor: a six-axis robot inside mesh-panel safety guarding, a programming and HMI station outside the fence line, and a steel guard enclosure on a welded skid that we fabricated in-house.
Who we worked with
No dealer or machine supplier is on record for this cell; it came to us directly, the way a next project from a repeat customer usually does. The robot maker is not named because the model is not confirmed in our record, and we do not print a model number we have not verified. Tooling, guarding, controls and installation were ours.
What came next
The relationship kept going, and the gripper is one chapter in it. A fabricator that automates once, sees it run and keeps handing the same integrator the next problem is the strongest proof there is. It is also the only kind of proof this page offers, because it is the only kind our record supports: no throughput, cycle, labor or quality figure exists for this cell, so none appears.
If the shop releases its name, a robot model, a weld process or a measured result, this page gets them. Until then it stays this honest.
Your station next
Start with your own station
The Fit Check takes about a minute on your phone. You see the answer first, and you decide what happens next.
