How would i go about connecting a air cylinder that will rotate the fixture 180 degrees and be able to control it from the teach pendant?
What type of operation are you attempting? You would be much better off with adding another axis for rotating.
That way you could rotate by teaching points to the new axis. Your robot would have much more capability.
Additional axis are very handy to have and are much more suited to turning fixturing over.
We set ours up with pins on a frame. That way we can switch fixtures out very quickly.
Im attempting to program a bracket that sits on a fixture that can rotate 360. by taking a bolt out but i have to rotate the fixture manually after each piece is welded. meaning i have to run every bracket from the teach pendant and not in (auto mode). its a pick/place older fanuc robot 2006 i believe. It welds and does what i program it to do. after i got some help figuring out the touch sensing.
I have no idea how to (add another axis). i hope i explained it good enough. any suggestions would be great, thanks.
Do you have an operator panel for this robot? If you do you can simply put a pause instruction in your program when the fixture needs to be flipped.
It will wait for you to hit the start button after you flip it over and run the rest of your program. You would probably need an intergrater to get you set up with another axis. quite a bit involved, but you will find it very helpful for this robot for future projects.
Great info! another quick question. what could cause a program to expand? before i got hired where im at now the guy programming it said the robot ran all day then they changed the wire and the program expanded after they changed the wire......... i didnt understand or have an answer for him. ive never seen in my experience a program just get bigger for no reason. I came from programming Panasonic robots just been working with fanucs for a few months.
Sorry, yes i have an operator panel for the robot.
To answer your first question you would need robot outputs going to a valve that would extend and retract your cylinder. It would then be a very good idea to add sensors that give feedback on where your table is. Make sure that the correct switch is on before proceeding. This will prevent crashes and bad parts. You could easily add those things to your program and then weld a bracket from start to finish without stopping to intervene. I do not understand your other question.
I have never seen or heard of this happening before. the program cannot expand itself.
I didnt understand it either when the guy told me that the "program just expanded" ive never seen or heard it happening either. but the company just bought this robot put it in a corner and just expects it to be an easy setup process. THE PROCESS IS WAY MORE COMPLEX THEN THAT.
But anyways i think i understand how to set the cell up so i dont have to intervene. ill do some research i appreciate the responses.
For future projects here is what we do sometimes. Set up the cell with 2 fixtures weld the top of your part in the first one from the teach pendant.
Take that part, flip it over and load it into the second fixture, load another part into the first fixture. Now every cycle will weld the top of one part, and
then finish the bottom of the second part. you get a completed part every cycle. Just write your program to weld the top of the part on one fixture then weld the bottom of the part on the second fixture. you would not have to have any positioners or air cylinder to flip the fixture.