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Anonymous Poster

Linear Motors and Spot Welding

09/12/2008 8:49 AM

Hello, I am considering using a linear motor in a weld environment in an auto plant. Typically there is usually a film of small particles of weld spatter generated from the spot welding process. I figured that if I was to place the linear motor magnet track upside down under some solid floor steel in a pit (with a small opening for the transfer table to be attached through covered with a flexible material that will cover the opening unless the force of the transfer pushes it out of the way). I was also planning to have a cover around the sides of both the magnet track and the coil as much as possible in the pit, only slightly open on one side where I have to attach the coil to the moving transfer. Does anyone know of a linear motor working successfully in this kind of environment?

Thanks!

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Power-User
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#1

Re: Linear Motors and Spot Welding

09/15/2008 8:58 AM

I am a tooling designer with Honda at one of their assembly plants. We normally try to stay away from anything magnetic since it does tend to attract the weld splatter more and is usually harder for maintenance teams to remove on these types of motors.

I normally use a rodless cylinder in this case with the length appropriately sized to the transfer length that you need. SMC sells these types of rodless cylinders that have a mounting pad on top for your transfer. Depending on weight of equipment being used you may need two mounted on either side of transfer. SMC also sells a weld splatter resistant model of this rodless cylinder specifically designed for automotive assembly applications. Give SMC a call.

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Anonymous Poster
#2
In reply to #1

Re: Linear Motors and Spot Welding

09/16/2008 7:47 AM

Wow, small world. The problem with the pneumatic cylinder is positioning. There are more than two stopping positions for this transfer and we are currently using a servo system that will be undersized by some additional weight due to new jig change capability. Which plant are you in?

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Power-User
Fans of Old Computers - PDP 11 - New Member

Join Date: Mar 2007
Location: In a mushroom field somewhere in Canada. Kept in the dark and fed sh--, well you know.
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#3
In reply to #2

Re: Linear Motors and Spot Welding

09/16/2008 10:39 AM

Please give more info next time. Take a look at Small Parts Transfer Jig in Plant #1, if you want to get some ideas.

UFG

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Anonymous Poster
#4
In reply to #3

Re: Linear Motors and Spot Welding

09/27/2008 6:57 PM

UFG,

What are your actual initials?

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