Big Country Posted August 31, 2005 Report Posted August 31, 2005 Currently I am working on a project that involves moving a fixture with a OTC Daihen robot and move it to a resistance welder where it will then get welded and return the fixture. Has anyone ever attemted this before or done something similar to this. I am just trying to get some new ideas on how to lay the machine out. Quote
gravitar Posted September 2, 2005 Report Posted September 2, 2005 Is is spot or projection welding? What material are you welding? what weld timer are you using? The conventional strategy it to mount the fixture(s) to a index table, ballscrew, or air cylinder/linear bearing slide, and weld with rigidly mounted guns (for simple jobs) or a robot-mounted transgun (more complex jobs). Is your part convoluted enough that you wouldn't even be able to get a transgun in to all the weld points? We just got a robot cell in that works much like what you describe.. But I'm having trouble following the wisdom of how they did it. It is a small stamping with just two projection weldnuts, but someone thought it would be clever to have a robot pick it up from a nest, carry it over to a pedestal welder, and then carry it over to a hopper and drop it. The distance travelled is about 20 linear feet. There's two robots in the cell doing this operation to two different parts. So far it has been a disaster.. Even when all the bugs are worked out, I don't think it'll ever run as fast as it should because of the great distance the robots have to cover. A human operator with a basket of parts and a simple pedestal welder would run laps around this thing! I keep on reminding myself to come in on a Sunday, fire it up, and film the operation of this thing. You guys would flip. But hey, what can I say, I wasn't asked for my opinion when they designed it! Quote
bluebyu Posted September 2, 2005 Report Posted September 2, 2005 I would like to hear some opinions on not grounding the 24V DC power for inpuuts. Quote
Guest Guest Posted September 3, 2005 Report Posted September 3, 2005 Sorry, this question was intended for another thread. Quote
Big Country Posted September 6, 2005 Author Report Posted September 6, 2005 The reason that I am not using a trans gun is because the robot only has a payload of 12.375 lb at 100% speed I am trying to make something out of spare parts that we have laying around in our facility. I am like you though I do have my doubts about the whole project. But again like you I wasn't asked for my opinion I was told to make it happen. Quote
gravitar Posted September 7, 2005 Report Posted September 7, 2005 Ok, now it makes sense (I guess). Well it CAN be done, just bear in mind that is more difficult to locate the welds when you do it this way. Hopefully you've got a fairly small, simple part to weld. If you ever happen to be in the Detroit area, I can show you how we're doing it :) I've just about convinced my boss to give up on the robots and weld the parts by hand though, so you'll have to hurry! Quote
Big Country Posted September 7, 2005 Author Report Posted September 7, 2005 We have come up with a way to center the fixtures by using a spring on the top and bottom of a linear slide so it will have tension on the top and bottom. Thanks for the invite. Quote
gravitar Posted September 8, 2005 Report Posted September 8, 2005 sounds like a clever idea. if possible, take a picture for us! Quote
Big Country Posted September 11, 2005 Author Report Posted September 11, 2005 I will when it is all finished and working. Quote
industrialrobotix Posted November 8, 2005 Report Posted November 8, 2005 Hey if you give up on the robots PM me - I might be interested in buying them!! Quote
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