Thread: Interchangable Motors?
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Unread 23-06-2002, 23:14
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#0047 (ChiefDelphi)
  
Join Date: May 2001
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Re: Interchangable Motors?
Posted by ChrisH at 1/19/2001 10:47 AM EST


Engineer on team #330, Beach 'Bots, from Hope Chapel Academy and NASA JPL, J & F Machine, Raytheon, et al.


In Reply to: Interchangable Motors?
Posted by rebecca on 1/19/2001 3:21 AM EST:



: back in the "can i drill a hole in a motor shaft" thread, a few people mentioned having complete interchangability pertaining to motors. What kind of system allows that? set screws?
: what we've done is have a keyway w/ key and keep a spare modified motor on hand. If we burn that spare too, we are screwed. But we've never even needed the one spare so...

: Is there is a better way?

Rebbeca,

What we do is design around the existing output of the motor. So for the drill motor we design a fitting that will fit on the gearbox output shaft as it is. Then we attatch gears or whatever to that.

For the window motor we use a gear with the right pitch and presure angle to mate with the existing gear. Sorry I don't remember what they are right now but a local gear distributor would be able to help if you need to figure it out. Or somebody could post it I think I've seen it here before.

For the seat motor we use a 1/8 square shaft and for the van door or globe motors we broach a flattened hole. Admittedly our machine shop had to get a custom broach made for this, but it wasn't that hard and we still have it.

The Fisher-Price motors are a different story all together, (and in our case a trade secret) but I think you can get the idea.


Chris Husmann, PE
Team 330 the Beach 'Bots


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