fun acme thread job

[scottwhisler]

Got to run this threading job recently. 20" diameter, 1" pitch, full root radius acme thread.

came out pretty nice when they were done.

 

[Conrad Hoffman]

Wow! 3-wire measurement on the size?

 

[Forestgnome]

Did you check it with thread wires?

 

[JS]

Excellent, What is the part for?

 

[scottwhisler]

I did indeed have a (one wire) size to hit.
(Is it really a ‘wire’ when it’s a .500” gauge pin?)

Anyway, we also do an actual fit test (I made the nut, as well.

If customer requires it, we can do a Faro arm/Romier arm quality control document.

Fun stuff. I’ll post a pic of the nut in a bit.

 

[scottwhisler]

here's a pic of the nut, as well, on the pallet

 

[scottwhisler]

It’s for a mining shovel.

 

[scottwhisler]

unrelated to threads above, but here's a pic of my co-worker who is currently loading this ring (~50,000 lbs) into the VTL.
It will become a large ring gear soon.

 

[1yesca]

dam and i was thinking it was the beginning of a breech plug for a cannon tell i seen the other pic. with them threads at the end of that long shaft

 

[DH Precision]

All I can say is very impressive!

 

[boslab]

You really don’t want to muck up jobs that big, what’s the slew ring off?
Mark

 

[scottwhisler]

You really don’t want to muck up jobs that big, what’s the slew ring off?
Mark

It’s the gear that rotates the “house” on the dragline. When the dragline scoops the dirt, this gear rotates it to the dumping position, then back to scoop more.

 

[gbent]

Was the gear blank rolled or forged?

 

[pavt]

You really don’t want to muck up jobs that big, what’s the slew ring off?
Mark

Ja, there are times when one is not allowed to say "Oops". This is one of them. No pressure at all, nosiree bub. Says the guy that used to weld pipelines in a chemical plant. I do hope you all are being fairly compensated for these "hi-pressure" jobs.

 

[scottwhisler]

Was the gear blank rolled or forged?

It was forged.

 

[scottwhisler]

Here's a pic of it on the angle plate getting hole pattern.

co-worker in bottom of pic for scale

 

[implmex]

Hi scottwhisler:
Where did you get such tiny fingers for the photograph in post #1?
I ask because I get asked every once in a while where I got such BIG fingers for some of the pictures I post.

All joking aside...nice job; it looks good!

Cheers

Marcus
Implant Mechanix • Design & Innovation > HOME
Vancouver Wire EDM -- Wire EDM Machining

 

[Mtndew]

Normally when someone here talks about a large part, there's many of us that would consider their part to be small.
I don't believe this is the case with your parts. That's friggin huge!

 

[jbacc]

It’s for a mining shovel.

Great work, really impressive...

 

[Dupa3872]

That is amazing work, I would love to see the machine you made it on and the tool you cut the tread with.

We do 80% turning here most of our parts have threads, 9.00 round is considered a big part in this shop. I just showed this to the guys who are working today and they were all impressed.

I am sure you are a valued member of the team.

Make Chips Boys !

Ron