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John Stevenson
05-15-2012, 06:11 PM
No not Evan :D

This damn think got thrown in the door today.

http://www.stevenson-engineers.co.uk/files/christmastree3.jpg

Cleaned it up a bit.
Christmas tree as we call them out of a cable winding machine. Done these before but not a double unit like this 10 plus 10 unit.

Top two rings have shorted and blew the top off.

http://www.stevenson-engineers.co.uk/files/christmastree4.jpg



This has pulled the connections and three other rings are open circuit.

Although there is no obvious damage to the lower set two of the rings are shorted to earth in that bunch.

I reckon there is a good 3 hours work in stripping this lot and making all new. :rolleyes:

Grind Hard
05-15-2012, 06:18 PM
I am somewhat uncertain as to what this thing does? Can you clarify a bit?

becksmachine
05-15-2012, 06:33 PM
Electrical slip rings for unlimited rotation.

Dave

Grind Hard
05-15-2012, 06:36 PM
Electrical slip rings for unlimited rotation.

Dave


Gotcha. That's what I thought he was getting at.

Brain is currently full, I have two new machine-toys to play with.

mickeyf
05-15-2012, 08:23 PM
upset the machining God

...Oh, I thought you meant a day went by without a gloat.:D

Mcgyver
05-16-2012, 12:10 AM
naw, he's just busy selling his calculator :D

digger_doug
05-16-2012, 08:12 AM
I for one, would really like to see pix of it dis-assembled.

John Stevenson
05-16-2012, 08:45 AM
Doug,
Next to impossible to dis-assemble, they are made from brass rings with wires soldered onto the inside and tufnol [ phenolic ] spacers.
These are then jigged up to be held central then the whole lot is injected with some horribletoolcrunchyhardasironstickslikeshìttoablan ket © resin.

Only way to strip these is turn the whole lot off and start again.

Here's a post from doing a single set previously.

http://bbs.homeshopmachinist.net/showthread.php?t=40258

davidh
05-16-2012, 09:00 AM
looks to be a very challenging job. fun to figure out a way. . . .

digger_doug
05-16-2012, 09:20 AM
Doug,
Next to impossible to dis-assemble, they are made from brass rings with wires soldered onto the inside and tufnol [ phenolic ] spacers.
These are then jigged up to be held central then the whole lot is injected with some horribletoolcrunchyhardasiron stickslikeshìttoablanket © resin.

Only way to strip these is turn the whole lot off and start again.

Here's a post from doing a single set previously.

http://bbs.homeshopmachinist.net/showthread.php?t=40258

John,
I followed and read thru the link. I am familiar with the molded ones,

I did some layout/design work to alleviate that problem, using pre-molded rings,
snap rings and wave washers (for end preload) but it never left the drawing board.
So when this little crash happens, you would just dis-assemble, and place in new part's and re-assemble.

I assume that resin (that you really don't like) is glass filled ? Like glastic (polyester resin/filler/glass fibers)

Lovely when machining it, always seemed to do it in the morning (so I was itchy all day long afterwards)

browne92
05-16-2012, 09:50 AM
Thanks for the laugh, Sir John. I needed that. But does the copyright symbol mean I can't copy and paste it for my friends to read?

BTW, there must have been hellfire and damnation in the top of that thing when it shorted out.

Dr Stan
05-16-2012, 10:01 AM
Its called karma and is probably a result of all the Bridgeport bashing. :rolleyes:

Weston Bye
05-16-2012, 10:13 AM
I think I have upset the machining God

Nah, you committed some heinous crime in a previous life. What goes around comes around. No wonder you that you have been condemned to so much lathe work.:D

loose nut
05-16-2012, 03:04 PM
Its called karma and is probably a result of all the Bridgeport bashing. :rolleyes:

Actually, for pissing off the god of machining, John will now be going to Hell and in his case hell is using a Bridgeport to machine impossible jobs for all eternity.

Sorry, I forgot he's already doing that.

Clevelander
05-16-2012, 09:05 PM
What do you mean this isn't covered by warranty....it's broken ;)

scphantm
05-16-2012, 09:27 PM
Doug,
Next to impossible to dis-assemble, they are made from brass rings with wires soldered onto the inside and tufnol [ phenolic ] spacers.
These are then jigged up to be held central then the whole lot is injected with some horribletoolcrunchyhardasiron stickslikeshìttoablanket © resin.

Only way to strip these is turn the whole lot off and start again.

Here's a post from doing a single set previously.

http://bbs.homeshopmachinist.net/showthread.php?t=40258


roflmao, ok, this was one of the first things today to make me really laugh. the copyright symbol killed me.