Clever Man

[sdt463]

Hi folks A friend sent me this today and I thought some of you might enjoy it as much as I did. hope I am not infringeing on any bodys rights by re posting this but apologies if I am. Dave.


OPERATIONAL V-12 ENGINE THAT FITS IN THE PALM OF YOUR HAND – 10 MINUTES…



This is not CNC technology; this guy made everything at home on his lathe and drill press. Took 1220 hours (a year and a half?) to make the 261 pieces.



Note the end-loaded crankshaft into the block (like an Offy), 12 individual cylinder heads, TINY rods and pistons, dual "underhead" cams with push-rods to rockers in the heads.



And, he did break-in using an electric drill driving the crankshaft!


Even if you're not an engineer, you'll love this!
http://www.wimp.com/tiniestengine/ (http://www.wimp.com/tiniestengine/)

[It'sNotWorthComplaining!]

At first I thought of internal combustion engine????, but it's a working model , there are no gaskets, rings fitted or fuel combustion operated. It runs via compressed air and is a very detailed model engine.
a beautiful work of art in machining never the less:)

[The ho har's]

That is amazing:)

Mrs hh:angel:

[BMKal]

Very impressive bit if work - he's a real craftsman.

[mudmouse]

Are those skills being lost to CNC machines?

Either way, that was fantastic. Thank you for sharing.


Matt.

[superquag]

Are those skills being lost to CNC machines?...

Matt.

Shrt answer, Yes.

- 'Cos there's less need to practice them in real life...

[sdt463]

Are those skills being lost to CNC machines?

Either way, that was fantastic. Thank you for sharing.


Matt.
As a retired fitter and turner and one that has had very limited experience with CNC machines I would think that the crankshaft he was making would be very difficullt to set up for the automated process. I would imagine for every big end journal, apart from the offset, the shaft would have to be rotated in the chuck the right amount, and the flex in the shaft as you progressd would be a nightmare. Can anybody with more knowlege than me comment. :cool:
Cheers Dave

[Slunnie]

As a retired fitter and turner and one that has had very limited experience with CNC machines I would think that the crankshaft he was making would be very difficullt to set up for the automated process. I would imagine for every big end journal, apart from the offset, the shaft would have to be rotated in the chuck the right amount, and the flex in the shaft as you progressd would be a nightmare. Can anybody with more knowlege than me comment. :cool:
Cheers Dave
I think the same, for much of that work as it is all fiddly, one off and the crankshaft etc needs to be setup multiple times in the manfacturing which most CNC don't do. I agree re the deflection though, I would have expected it to be absolutely all over the place. CNC from what I've seen seems to be used for repetitive work (eg making lots), boring work (eg long welding) and time consuming work (eg manufacture of drag racing blocks - they just let it go overnight). The fitter is evolving into a programming job.

[Bushie]

I think the same, for much of that work as it is all fiddly, one off and the crankshaft etc needs to be setup multiple times in the manfacturing which most CNC don't do. I agree re the deflection though, I would have expected it to be absolutely all over the place. CNC from what I've seen seems to be used for repetitive work (eg making lots), boring work (eg long welding) and time consuming work (eg manufacture of drag racing blocks - they just let it go overnight). The fitter is evolving into a programming job.

I have no experience (at all) with machining but a quick search shows that CNC and robots are producing a lot of crankshafts :D

CNC-manufacturing cell for Crankshaft Production - OKUMA Multus B 300C - YouTube

hoeckle - CRANKSHAFT PRODUCTION (http://www.hoeckle.com/content.php?id=36&titel=Crankshaft+production)

Martyn

[sdt463]

I have no experience (at all) with machining but a quick search shows that CNC and robots are producing a lot of crankshafts :D

CNC-manufacturing cell for Crankshaft Production - OKUMA Multus B 300C - YouTube (http://www.youtube.com/watch?v=oGmg33D_LEY)

hoeckle - CRANKSHAFT PRODUCTION (http://www.hoeckle.com/content.php?id=36&titel=Crankshaft+production)

Martyn

Thanks Bushie but that crankshaft is about eight cylinders to short and about 3 feet to long. :D:D:D