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RFQ: Prototype Crank Shaft - QTY 1 - Steel or Stainless

J Gilles

Cast Iron
Joined
Feb 19, 2016
Location
PNW
RFQ: Prototype - QTY 1 - Steel or Stainless

I'm working on a personal project that requires a prototype part. Here is a link to the google drive with Solidworks files, Step file, and drawing. Quantity is 1 and material can be any alloy steel or stainless. If you've got a remnant left over that would be perfect. Strength won't be an issue as it's already oversized and mainly built around the other components I already have on hand.

If you want to add holes or other features to help with fixturing, just let me know I can see if it will work.

Thanks,
Jake

Edit: Changing design and will come back with an updated version that's cheaper/easier to machine.
 

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J Gilles

Cast Iron
Joined
Feb 19, 2016
Location
PNW
Not really. It's a small crank under 3" long that will mount on a gear motor for a health care application. 3/4" bore with a keyway on the motor side and a 10mm offset boss for a tie rod end.
 

CarbideBob

Diamond
Joined
Jan 14, 2007
Location
Flushing/Flint, Michigan
I think the term "crankshaft" in the title may make some think different that what you need here if not paying attention to the print.
It was the first thing I thought and then....:wall: and:dopeslap:
Bob
 

J Gilles

Cast Iron
Joined
Feb 19, 2016
Location
PNW
I think the term "crankshaft" in the title may make some think different that what you need here if not paying attention to the print.
It was the first thing I thought and then....:wall: and:dopeslap:
Bob

I guess it's closer to a crank, than a crank shaft. That's just what popped into my head when I first drew it. Updated the title.
 

bob

Titanium
Joined
Aug 12, 2002
Location
Regina, Canada
If you can live with a pressed in crank pin might be doable. If you want it all from one piece it will be expensive.
Bob
 

J Gilles

Cast Iron
Joined
Feb 19, 2016
Location
PNW
If you can live with a pressed in crank pin might be doable. If you want it all from one piece it will be expensive.
Bob

This is a great suggestion. I might be able to change it to use a 10mm pull out dowel pin and use the threads for retaining the tie rod end.

I'm going to close this out for now and go back to the drawing board.
 

jeffk

Plastic
Joined
Feb 17, 2014
Location
WI
This is a great suggestion. I might be able to change it to use a 10mm pull out dowel pin and use the threads for retaining the tie rod end.

I'm going to close this out for now and go back to the drawing board.

I’m not understanding why this would be a difficult part to make. This thing can be made pretty easily as one part and should not be very expensive.


Sent from my iPhone using Tapatalk
 

Garwood

Diamond
Joined
Oct 10, 2009
Location
Oregon
I’m not understanding why this would be a difficult part to make. This thing can be made pretty easily as one part and should not be very expensive.


Sent from my iPhone using Tapatalk

No shit. Looking at the drawing that is dirt simple. 2 ops on a VMC and a small keyway broach.
 

J Gilles

Cast Iron
Joined
Feb 19, 2016
Location
PNW
Final update for me.

Ended up finding a fadal 4020 for a screaming deal, so I'm just going to make this part and the rest for this project myself.
 








 
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