T
Tracker
Guest
no I haven't why?.....I never checked where the forgings came from....I think we got all our material from MIGHTY MILL outta gary Indiana....after this merger thye went outta business
https://www.nwitimes.com/uncategori...cle_521b3229-45a5-5c10-96ff-8df4a4c9ed69.html
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to super small ACME THREADS
indy_500
Well-known member
Machining? Ok I'll bite. Heres a few of the parts ive done recently. One is a 84" long shaft for an oil compressor with 18 different diameters with a .0005" tolerance, the taper on each end is a .0002" tolerance on the gauge standoff (tapers werent finished yet in pic), and .0003" runout on the entire shaft checked with an electronic runout machine. Next one is also for a different style oil compressor 25.5" on the big end ran on a 15" chuck. Yes, i chucked on that with that little lathe lol last one is a bushing with 5,267 holes drilled on the ID of the part done with a 90 degree attachment hooked up to a horizontal live tooling head along with the rest of the millwork done on my 4 axis latthe. Tough to rearrange the order of the pics on my phone but im sure you'll be able to figure them out.
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T
Tracker
Guest
really cool indy.....I also had to do small hole drilling at angles....in titanium jet engine fan blades....018 in diameter and every hole a different depth and or angle....some where over an inch deep....for wind tunnel testing in Sharonville ohio GE AIRCRAFT ENGINE FACILITY....we actually sent thru 25 birds frozen, thawed, and in many forms....50...then 75....then 100...then turkeys....until imminent implosion....until I got it right....man o man what a sight it was....just running an engine on a stand....holy moly shake the earth.....love that stuff indy...I also run a live tooling hardinge conquest 5 place SP......+/-.00001
https://www.youtube.com/watch?v=_jfXX7qppbc
https://www.youtube.com/watch?v=_jfXX7qppbc
GE Aircraft Engine Group (GE-AEG)
(Click thumbnail for larger image.)
… circa 1998-1999, er oops … make that 1968-1969!
[Even with 3 iterations of write, proofread, re-write, I still musta writ [sic] this in my sleep!]
That was my next stop after 3 years at Sixth US Army Data Processing Service Center, Presidio of San Francisco, CA. — Such a rough place to be during that nasty business in Việt Nam! — It sure beat the heӀӀ out of slogging through the swamps and da bush in country while ducking leeches, booby traps and bullets!
Although if I had gone across the pond I probably would have found myself working in a US Army Mobile Data Processing Unit (DPU) in a couple of semi-trailers like this:
(Click thumbnail for larger image.)
… and mostly out of the heavy crossfire. We had some folks from 6th USA DPSC that did exactly that.
At GE-AEG I was doing database development for their engine parts department's inventory control system. — Until I was offered a "deal I couldn't refuse" for a "temporary" assignment at the (then) GE Computer Division in Phoenix, AZ that turned into a 22+ year gig.
Ahaa, I used to work at the giant "Generous Electric" Aircraft Engine Group facility in Evendale, OH:
(Click thumbnail for larger image.)
… circa 1998-1999, er oops … make that 1968-1969!
[Even with 3 iterations of write, proofread, re-write, I still musta writ [sic] this in my sleep!]
That was my next stop after 3 years at Sixth US Army Data Processing Service Center, Presidio of San Francisco, CA. — Such a rough place to be during that nasty business in Việt Nam! — It sure beat the heӀӀ out of slogging through the swamps and da bush in country while ducking leeches, booby traps and bullets!
Although if I had gone across the pond I probably would have found myself working in a US Army Mobile Data Processing Unit (DPU) in a couple of semi-trailers like this:
(Click thumbnail for larger image.)
… and mostly out of the heavy crossfire. We had some folks from 6th USA DPSC that did exactly that.
At GE-AEG I was doing database development for their engine parts department's inventory control system. — Until I was offered a "deal I couldn't refuse" for a "temporary" assignment at the (then) GE Computer Division in Phoenix, AZ that turned into a 22+ year gig.
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That is some tight tolerances on a shaft that big, must mean your machine is dialed in. I would guess all of ours at best would be +/-.0005 over 24" max although we don't go lower as everything we do gets heat treated thus grinding is required. We just finish a 4 section 12 ft cam and crank line bore bar for a power generation company and total TIR less than a couple tenths.
tealracing16
Member
FRNASH: My old man was in Korea during Vietnam and worked in one of those new fangled computer boxes. He wanted to go to 'Nam but was told nope 9 times! Hated it and when he got out said computers will never work! Big bank in Milwaukee wanted him to work in the computer department and get it going for them. Foolish old man. I don't know a whole bunch but I believe his unit number was the same as the one used in M.A.S.H. on TV. 4055?
sweeperguy
Active member
TV's MASH was 4077
T
Tracker
Guest
small world fr nash....I worked on the new engine for air force one there....and the design that saved 25% fuel the one we currently use today....I was written up in POPULAR MECHANICS MAG for my invention....it was a forward and aft boriscope viewer that saved 3 days of taking an engine apart....they could look inside it without taking it apart and the new vanes saved 25% fuel and were safer and quieter....I also did all the ABS covers for all fighter engines on carriers that were on the deck for sea spray
tealracing16
Member
That's it! Thanks guy!
1. Re my previous post (now titled "GE Aircraft Engine Group (GE-AEG)"):
I have changed so much of that post as read:
2. TRACKER: While you were there, did you see anything left of of GE's Nuclear Aircraft Engine Project display?
GE-J47 engine (Click thumbnail for larger image.)
See Wikipedia (click →) "General Electric J47"?
The nuclear-powered X39 (mentioned in the above article) was also on display somewhere in that mega-complex in Evendale while I was there.
See also Wikipedia (click →) "Aircraft Nuclear Propulsion", quoted here in part:
I have changed so much of that post as read:
to read:
2. TRACKER: While you were there, did you see anything left of of GE's Nuclear Aircraft Engine Project display?
GE-J47 engine (Click thumbnail for larger image.)
See Wikipedia (click →) "General Electric J47"?
The nuclear-powered X39 (mentioned in the above article) was also on display somewhere in that mega-complex in Evendale while I was there.
See also Wikipedia (click →) "Aircraft Nuclear Propulsion", quoted here in part:
I was thinking about that engine while President "Dubya" was flying around the US in Air Force One for an extended period (with several airborne refuelings?) after the (click →) "911" event.
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T
Tracker
Guest
o man the things I could tell you....after you left there was an accident with the nuclear engine....there was a building....and enormous building that was left intact as if everyone just left yesterday....only it was years....coffee cups and all left as is....we didn't know any better so we would play tennis at night in there and ride golf cart races around inside and explore....I was working on the F117A, B1, B2, B2B, SHUTTLE and many other projects for WPAFB and AREA 51...you know how that engine had Conventional jet engine compressor and turbine sections, well at the time there was no MIL SPEC silicone and I was assembling an experimental engine (prototype)...years later I realized it was airforce 1...and since I sledded and rebuilt engines....I suggested to use the orange heat head gasket silicon from the hardware store we used on the john deeres for interlocking the vanes together in the turbine since it could flex and hold in extreme temps even though the vanes were interlocked metallically....it worked fantastic...after that they started making and testing MIL SPEC GRADE sealants of all sorts and this is the wide range of colors and applications that todays silicones have is a result from that...and the new working engine used the new silicones that were then MIL SPEC graded...when the shuttle lost some tiles it came in with them missing on the belly and I used the red silicone that was used for exhaust pipes and heat....no more ever came off again that I am aware of....another home run...don't even get me started on hanger 13 dude....LOL...I got really lucky and worked on some incredible shaz and did a great service for our country....this is just the tip of the ice berg...if you want something cool to youtube....look up electromagnetic rail gun ( I made that) prototype navy test and the ZUMWALT...love this stuff as I know you do too
SledTL
Active member
We should make a machining thread. I dig talking about it with others, and see the cool things that they make at work. I don't have anything particularly cool, more high production volume than job shop work place. I do water jet some spiral helix that look like DNA strands to mix paint.
Evendale’s very own “Черно́быль” (Russian)/“Чорно́биль” (Ukranian)/Chernobyl!
I remember when that was announced. We haven’t heard much about it since.
Nice toy, but it’s still only fires an unguided projectile, so it’ll be tricky to hit an ICMB with that.
T
Tracker
Guest
Evendale’s very own “[FONT=&]Черно́быль” (Russian)/“[/FONT][FONT=&]Чорно́биль” (Ukranian)/[/FONT][FONT=&]Chernobyl[/FONT][FONT=&]! [/FONT]
Nice toy, but it’s still only fires an unguided projectile, so it’ll be tricky to hit an ICMB with that.
this tells me you didn't watch a film on its capabilities on youtube yet....the basics are this....144 miles in 7 seconds...fired at 10 feet off water...hits target 10 feet off water...goes same speed as curvature of earth and spin....a mountain cannot stop it...it can easily take out a missle....and watch metal storm for more...its often referred to fire and brimstone...cool stuff
sweeperguy
Active member
Do you know what those shafts are for?
indy_500
Well-known member
Both are for oil compressors. The long shaft about a half dozen impellers get bolted on there to pump oil.
For oil compressors?
So oil is compressible? News to me!
See (click →) Engineer's Edge "Compressibility of Hydraulic Fluids".
Or, perhaps a better reference, from Bright Hub Engineering:
(click →) "Hydraulics – Why the Fuss about being Incompressible?".
Oil pump? Sure, compressor, I don't think so.
Nice piece of work, though!
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