This is how you rough machine a Crankshaft!

[zyzzyx]

 

[Don Frelier]

Don't try this at home.

 

[j-c-c-62]

Very impressive. Thanks
Is that an industry wide method/machinery for cranks?
I was surprised I saw no cutting fluid, coolant, etc?

 

[zyzzyx]

Kind of Industry standard if you're one of the big six, but as you see this machine can crank them out effortlessly.
The castings are very close to finished and very little stock on them so coolant is not needed. Thousands of dollars
worth of inserts on those cutters and the steady-rest keeps moving around to keep the setup very rigid. I can only
dream about what it takes to program that machine!

 

[j-c-c-62]

Thankyou
The relocatable steady rest was trick.
Wonder how the crank gets its first journal machined for the steady rest.
Usually when the sound generated is a deep loud groan, something is vibrating.
Wonder what the finish machining set-up looks like?

 

[MarPar]

Sounds almost like a pipe organ lol