Pics of machining fan hub

j king

Stainless

Joined

Oct 27, 2003

Location

ohio

• Feb 19, 2006

• #1

Bored so I figured I would show a couple new pics. This is a fan hub for a vent shaft fan.It comes in as a ruff forging and gets quite a weight reduction before completed.Bore was ground with a tool post grinder.Bore tol. was -.001 + .000 and a 32 fin.

 

Doozer

Titanium

Joined

Jul 23, 2001

Location

Buffalo NY

• Feb 19, 2006

• #2

J King-
You are my hero. I aspire to do such work some day. Running a lathe that size would give me a "king of the world" feeling. I think I would enjoy letting it go to my head. I think a full blown complex may be warrented. Is that a boring bar, or a gear drive toolpost grinder??
--Doozer

 

bluchip

Stainless

Joined

Jun 11, 2005

Location

OH

• Feb 19, 2006

• #3

Neato J King......I see the ol' Pi tape is at the ready, eh?

 

lathefan

Titanium

Joined

Nov 7, 2003

Location

Colorado

• Feb 19, 2006

• #4

j king...more GREAT pics.

Bore tol. was -.001 + .000 and a 32 fin.

Click to expand...

That's gotta take nerves of STEEL...some real measuring and machining skill...and the price tag on the machine work (and the whole piece) must be UN-REAL. Was the diameter for the rest turned first, and was the tailstock used for support?

 

j king

Stainless

Joined

Oct 27, 2003

Location

ohio

• Feb 19, 2006

• #5

Doozer . It is a boring bar.
Running this is no different than running a smaller lathe.Really.The physical abuse from the heavy tools and climbing up and down is tiring.Shovel a few barrels of chips a day and the small parts will look a little better again.
I am more impressed with Rivett's small stuff.I cant imagine how he does that stuff.I would love to watch him machine something small.What would be nice if you mess something up to just toss it into the trash and start over.Material costs would be so minimal.
Glad you guys enjoy the pics..

 

j king

Stainless

Joined

Oct 27, 2003

Location

ohio

• Feb 19, 2006

• #6

Hey lathefan. It was ruffed out with a chuck in the tail end.Ruff all od,Set staedy rest and bore ID to - .100.Remove steady and chuck both ends and finish 1st end.Turn part around and finsh turn other end and flange dias.Set steady and finish bore..Just like a little piece.

 

P

Paul T.

Cast Iron

Joined

Sep 10, 2004

Location

California

• Feb 19, 2006

• #7

Whoa, I think I would get claustraphobia the first time I walked up to that machine.

Probably a dumb question, but when does a VTL type machine make more sense for a big part like that?

Paul T.

 

j king

Stainless

Joined

Oct 27, 2003

Location

ohio

• Feb 19, 2006

• #8

Paul.I guess it would make a difference if we had one but it was sold several years ago.I prefer a lathe for this type off work. Radi are too hard on a vtl compared to a lathe.My opinion anyway.Hard to reach over a vtl table and polish radi and it isnt as solid as having a chuck and tailstock for support for ruffing.It is trapped in the lathe.I dont like vtl's that much. Good for short pieces up to a couple feet thick.

 

matt_isserstedt

Diamond

Joined

Dec 15, 2003

Location

suburbs of Ann Arbor, MI, USA

• Feb 19, 2006

• #9

Hi, wonderful pics!

A couple questions...is the "track mark" for the roller steady polished out later, or is that just accepted as standard practice to have that in the work?

Also, what are your typical spindle speeds when doing this work...guessing higher for the toolpost grinding?

-Matt

 

jim rozen

Diamond

Joined

Feb 26, 2004

Location

peekskill, NY

• Feb 19, 2006

• #10

Just in case anyone *happened* to miss it,
check out the WRENCH on top of the toolpost!!!

Jim

 

mendoje1

Hot Rolled

Joined

Jul 30, 2003

Location

Los Angeles, California

• Feb 19, 2006

• #11

"Just in case anyone *happened* to miss it,
check out the WRENCH on top of the toolpost!!!"

...and the worklamp inside the workpiece!!!

 

jmp

Cast Iron

Joined

Nov 8, 2001

Location

Mechanicsville, Va

• Feb 19, 2006

• #12

J. King,
Great pics! I wish you'd "get bored" more often . I like the contrast of the big wrench compared to the diminitive and somewhat delicate look of the dti and it's mag base. Very cool.
Mike

 

M

mjk

Titanium

Joined

Oct 20, 2005

Location

Wilmington DE USA

• Feb 20, 2006

• #13

J King
Do you have the start weight vs finish weight?
How long does it take to complete?

 

smallshop

Diamond

Joined

Jun 2, 2005

Location

North Central Montana

• Feb 20, 2006

• #14

Nice work! did Rivett make your mag base for you...

 

M

Mike W

Stainless

Joined

Jan 12, 2003

Location

Central Kali.

• Feb 20, 2006

• #15

That is very impressive, keep the pictures coming.

 

J

JL Sargent

Diamond

Joined

Feb 7, 2005

Location

Birmingham, AL

• Feb 20, 2006

• #16

J. thats something. We all have screwed up a piece of work. Im thinkin at some point you have done a doozy workin on the size stuff you've shown on this forum. Whats the worst one you recall?

 

j king

Stainless

Joined

Oct 27, 2003

Location

ohio

• Feb 20, 2006

• #17

Glad you guys enjoy the pics.

Matt.That piece doesnt weigh enough to wear into part.I squirt oil on the rollers.Dont really have a good reason for that.Just an old habit.As far as speeds it depends on what you are doing and the tools ect...Grind slow.Fast will overrun the wheel cutting speed.Alot of surface for a smaller wheel.

MJK. No weights.

JL..Bite your tongue.No bads yet... Just have to pay attention.

 

S

SND

Diamond

Joined

Jan 12, 2003

Location

Canada

• Feb 20, 2006

• #18

Very nice work.

I'll stick to making smaller stuff. I find working on a 500$ piece of material stressful enough as it is.