Oil Pickup Tubes - How do they do this? 1

[jnelson33]

Hey all, I'm not sure where to post this. It's an automotive part, but it's also a pipe and concerns manufacturing techniques.

Does anyone know the name of the crimping process for this outside ring? Most google hits are returning hose assembly tools, and I don't think it's radial crimping.

If I know the process I can more easily track down vendors for making our own version of an oil pickup tube.

We've sent OEM CAD models for GM LS oil pickup tubes to 5-6 stateside vendors and they all no quote because they say they can't do it.

I know OEMs have special techniques they consider intellectual property, but doesn't seem worthwhile to invest capital into a cheaper part like this to me. The GM LS oil pickup tubes are more complicated that what's pictured here, so I can post pictures of that too, just ask!

 

[MintJulep]

I guess it's either rolled or spun.

If spun it might be the tool that's spinning rather than the workpiece.

 

[GregLocock]

I'd guess it is the same as is used on a typical tin showerhead. Which is not much help. I'd guess it is just a case of whacking it with a couple of dies. The first would upset the lip by about 30 degrees and the second would squish it flat and give the finish.


Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[3DDave]

Welding or brazing are suitable options.

In terms of forming that -

The blanking of the bottom piece would then get a forming operation to create a flange
The top piece would be set in place
A device with grooved rollers would close on the flange and force the flange to some intermediate angle 45 degrees to 30 degrees open
A device with grooved rollers would close on the flange, possibly split with a heavy spring to force the groove halves together, maybe with a roller that engages at the end, to finish the job.

If you are making just a few, then consider turning the flat plate to have the correct edge rounding to it and brazing or welding the cone into a recess.

 

[MintJulep]

Something similar to this.

https://youtu.be/nX6fex8Mi-I?si=Jf-kE1Zm0md9kM4A

 

[MintJulep]

Or, similar to this, on a larger scale.

https://www.amazon.com/Grommet-Eyelet-Leather-Punch-Pliers/dp/B0CN8G5ZSW

 

[enginesrus]

Easy to do with the correct press and dies.