Parts is parts AGAIN!

Dave_G

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Ok, we were having fun today with the digital camera in the shop so consider this SPAM TUESDAY!

Here's a shot of electronic ignition modules for Harley Davidsons that we make on our horizontal machining center. We gang numerous parts on a tomb stone for faster production.

Dave

"I know it all, but I can't remember most of it..."
 

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Dave_G

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Here's a close up pic of the modules. Note the holes in the pockets. They are a #1-72 threaded hole that is rigid formed at 5000 RPM.

"I know it all, but I can't remember most of it..."
 

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Dave_G

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Ok, I'll bet no body can guess what these parts are used for.

"I know it all, but I can't remember most of it..."
 

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Dave_G

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Here's a pic of some 6 speed main shafts fresh out of the CNC lathe and ready for spline.

"I know it all, but I can't remember most of it..."
 

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Dave_G

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Need V-grooves machined in the outer race of your hardened bearings? ;-)

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Dave_G

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Here's Wally with the BIG set of vernier calipers to measure I failed spelling with.

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Dave_G

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Ok, last pic...I been drink'in and post'in so give me a break! sheesh......

"I know it all, but I can't remember most of it..."
 

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mgobaja

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I guess that the long can with schrader valve is a shock resevoir. Looks like some hub parts also.
 

Donovan

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Dave that is some cool stuff. What kind of cnc lathe are you using to machine those grooves in that bearings? How long does it take? I also like all those parts on that tombstone. Very cool stuff.

Donovan
 

Dave_G

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Re:"What kind of cnc lathe are you using to machine those grooves in that bearings?"

Donovan,
All of our CNC machines are Hitachi Seiki. The lathe is a Hitec Turn 25S, the vertical mill is a VA-55 50 taper machine and the horizontal is a HG400 MKIII. Today we tenatively closed a deal on a brand new Hitec Turn 200 but haven't seen it yet. It's being shipped from Japan.

The bearing races are being cut using ceramic inserts. Carbide won't even phase it so we have to go with the ceramics. I get about 30 pieces per edge on the insert. Were running them at 550 SFPM and it takes about a minute and a half to do one.

Dave

"I know it all, but I can't remember most of it..."
 

Donovan

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That is very cool Dave. My Family owns a Grinding shop here in Denver and I run a centerless grinder most of the time and a CNC OD grinder. I want to get a CNC lathe but that would be a big set for us grinders to take. HEHE. Thanks for the info. What kind of tolerances does the Hitachi lathe hold?

Donovan
 

Dave_G

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Re: What kind of tolerances does the Hitachi lathe hold?

Under the right conditions you can hold .0001 I beat the grinders out of a lot of finish work these days using ceramics to finish bearing and seal diameters after heat treating. You guys should consider a CNC lathe for your grind shop. Probably would allow you to rough profile the parts accurately before putting them in the CNC grinder I would think.

Dave

"I know it all, but I can't remember most of it..."
 

farmboy

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what does SFPM stand for? i'm guessin surface something per minute.

Boy, Farm
 

Kritter

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Spindle?

Kris
<A target="_blank" HREF=http://www.dmsrace.com>www.dmsrace.com</A>
"Jesus loves you, everybody else thinks you're an A-hole"
 

farmboy

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ten hut, you engineer types have to explain some things to us non engineer types once in a while, thanks

Boy, Farm
 

JrSyko

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This whole post might as well be in a foreign language for all us non engineer types!

See ya in the dirt!
 

partybarge_pilot

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1-72 roll tap at 5000 rpm? Are you sure your spindle ever reaches that speed? On a short hole like that our fastest spindle ( brother 30 taper) only hits about 3000 rpm. Even then we have a problem with them hydraulicing at the bottom of the hole and breaking. MMMMM, tombstone. Must be nice to have a large horizontal. Those long turned parts look like oversized pull studs......
 

Dave_G

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Re: ? Are you sure your spindle ever reaches that speed?

Yep. Max speed on that machine is 12,000 rpm. It's a through hole so hydraulicing is not a problem. On the Volkswagon ignition caps it's a blind hole and we have to grind a small micro groove in the thread former to relieve the coolant pressure so it doesn't hydraulic. Since it's a rigid tap process there is some accelleration / de-accelleration but at peak it does hit 5000.

Dave

"I know it all, but I can't remember most of it..."
 
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