July 23, 2019, 05:26:23 AM
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 7th Axis Welder Setup

normal_post Author Topic:  7th Axis Welder Setup  (Read 831 times)

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February 06, 2019, 10:42:09 PM
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kevilay


Hello guys,

I am using a weld gun on a 7th axis. It seems like someone has already set it up. I have no experience in using a weld gun. My experience is all with pick and place.

To open the gun I am using a Jog command with a group 2 and a position of -127.271
This seems to work Fine.

I was also using this method for closing the gun for cap changing and some other things.

I see in the program a Press_motion P=[1,1] I can run this and it will close the gun and its good. Im assuming this is a close to force type of thing.

What I am trying to do is understand how this works, how much force Im applying. Also When I try to close on a block of wood "for testing" I keep faulting out.  I am assuming because of the thickness of the wood.

I am trying to come into a cap dresser and I want to make sure Im closing to the correct force and holding it

Thanks,
Kevin

Today at 05:26:23 AM
Reply #1

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February 09, 2019, 10:17:20 PM
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byrol


According to their writing, I understand that the welding equipment is defined as an extra axis. To understand how this system works, you need to take a closer look. Resource systems that can be entered through robot menus are usually introduced in two different ways. First of all the values ​​of the robot "Data,Register". All the parameters related to the source can be found there, and the second method is to use the "Func, Grup2" option or when you are in the "setup" menu or directly in the normal program. related parameters. I think that this problem can not produce a healthy solution without knowing the system in detail.

March 06, 2019, 06:03:21 PM
Reply #2
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kevilay


I am revisiting this application again and was hoping for some help here. On this robot there is an existing program that has a command Press_motion P=[1,1]. This will close the gun, I can see it bend a bit so it seems to have a good force. However I have no idea how much force this is. Also if I had a piece of wood inbetween the gun it faults out. So im guessing there is a thickness setting somewhere. Can anyone help me understand how this command works and where it is pulling its information.

What I am trying to do is alter this for a cap dresser. So I would need to close to 1" for example @ a force for 300 lbs.

Thanks,
Kevin


March 06, 2019, 06:47:45 PM
Reply #3
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Robo_Eng_13


What exactly do you mean by open and close? None of our welding robot have any actions i would describe that way. A picture of your End Effector might help.

March 06, 2019, 07:06:32 PM
Reply #4
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tony gast


Sounds like you need a servo gun manual and a spot tool manual.
There is an argument table for the pressure scaling.

If the robot is properly licensed to you, you can access these from the Fanuc CRC site...
Oh, well

March 06, 2019, 08:51:23 PM
Reply #5
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kevilay



Sorry I don't have a picture handy. Its an arrow servo weld gun, setup as a 7th axis on the robot.

March 06, 2019, 08:52:39 PM
Reply #6
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kevilay



This is my first weld robot and it was provided by a customer and its used. However I do have many other lr mates and 710s that are registered to us.

Today at 05:26:23 AM
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March 06, 2019, 08:55:03 PM
Reply #7
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kevilay


Here is a picture I found on google. Looks similar but not exactly the same. But it is a C frame welder, and the upper action is a servo. Which opens and closes the gun.

March 06, 2019, 09:23:56 PM
Reply #8
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Robo_Eng_13


Okay, Spot Weld, not Arc Weld. That makes more sense.

March 07, 2019, 03:43:58 PM
Reply #9
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kevilay


Is anyone familiar with this command? Is there a better way to do it?

March 12, 2019, 04:08:37 AM
Reply #10
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JimFc


Press motion (1,1) =( start distance schedule #1, pressure schedule #1). 
 To find the pressure go to [data] [f1] select pressure this is the pressure table.  (You May need to press [prev] to see all pressure schedules)
Depending on software version this may also have the thickness in the pressure table. 
Depending on software options you may have a tip dress command.  If you have that, that is the best way to dress caps. To check go to menu (6 setup) [f1] and look for tip dress. If you have that option use it. To use it simple add the tip dress command to the end of the position. Same way you would for adding a spot weld point.  [next] [inst] spot welding, tipdress.
« Last Edit: March 12, 2019, 12:51:43 PM by JimFc »

March 13, 2019, 12:33:29 PM
Reply #11
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kevilay


 [f1] select pressure this is the pressure table.  (You May need to press [prev] to see all pressure schedules)
Depending on software version this may also have the thickness in the pressure table. 
Depending on software options you may have a tip dress command.  If you have that, that is the best way to dress caps. To check go to menu (6 setup) [f1] and look for tip dress. If you have that option use it. To use it simple add the tip dress command to the end of the position. Same way you would for adding a spot weld point.  [next] [inst] spot welding, tipdress.

Thank you very much for this response. What is a start distance schedule? Where would I find this? I do have the thickness in the pressure table. I was trying to use this for dressing, but also for a cap changer. I have to close on the changer at a set pressure.

Thanks

March 14, 2019, 03:22:25 PM
Reply #12
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JimFc


What version of software are you using?  (Menu) utilities.

Start distance is an approach distance for the movable and fixed tip.  Located under (data) (f1) distance. Which the gun passes through before pressurizing starts. Think of it as an invisible program point above the weld/spot.   When you get to welding the opposite of start distance is end distance; will be called ED or BU and is the back up distance after the weld completes. basically how wide the gun opens after the weld.
 our press_motn has (SD=...,p=...,t**).   I think It’s possible your distance table is under data, f1, pressure, detail, (weld stroke) detail.



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