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billyboy
11-17-2005, 07:48 PM
hi all,,
heres a couple of pictures of the ball turning tool i have just recently finished,,
http://i14.photobucket.com/albums/a333/billyboy_/ball1.jpg

http://i14.photobucket.com/albums/a333/billyboy_/ball2.jpg

bill

aboard_epsilon
11-17-2005, 08:10 PM
Nice job ..lovely work.......but I cant see what does what ...what turns and what doesnt etc.
Any chance of you showing the plans for this .
How about some pics of some sub assemblies so that I can get the just of it.
then I might even attempt to make it myself.

all the best....mark

billyboy
11-17-2005, 08:38 PM
hi mark, the design is pretty simple, the front two blocks slide up/down under an M6x50mm long bolt, it will cut ball/acorn shapes, and can also be adapted to be a boring tool, the square part in the centre fits into a tool post, im sorry but this tool was copied from another ball turning tool so no drawings are available, this one has been modified further with bronze bushes and the dovetail slides have had a gib strip fitted for extra rigidity, will cut balls from 1/16"th to 2", ill break the tool down into parts so you can get a better idea for construction,,the front blocks are made from ground stock(30x25mm) and mild steel axle, with a 5mm diam drill rod for a cutter, ground at 25 degrees, the main tool holder bit is made from solid aluminium stock 2"x1" then bored out to 18mm to accept the axle, hope this helps,,

(ill post some exploded view photos)

bill

billyboy
11-17-2005, 09:03 PM
hi, heres the tool broken down into individual parts, the overall length of the tool is 8 inches.
http://i14.photobucket.com/albums/a333/billyboy_/ball05new.jpg

http://i14.photobucket.com/albums/a333/billyboy_/ball04new.jpg

bill

CCWKen
11-17-2005, 09:31 PM
Nice Job!

Spare us the pictures of you turning your balls though. I don't think I want to see that. http://bbs.homeshopmachinist.net//biggrin.gif

What's the max radius?

billyboy
11-17-2005, 09:53 PM
hi,,im glad i aint got brass balls ,,its well below zero in england east coast tonight,, max rad is 1" or 2" diam
thanks
bill

freddycougar
11-17-2005, 10:25 PM
bill...looks real good.... i too would like to make one like that. if i had plans (hint)
thanks
freddy

Evan
11-18-2005, 01:26 AM
Bloody hell that's complicated. Must be an English design. http://bbs.homeshopmachinist.net//biggrin.gif Looks nice though. I just swivel the compound on my SB9.

Norman Atkinson
11-18-2005, 01:58 AM
Evan!

Sorry, not English but Kiwi stuff!

All in Jack Radford's book but thence on to Geo H Thomas and then on to Hemingway.

The design lends itself to a rather nice small boring head- with a shank to fit lathe or miller. See Model Engineers Workshop Manual by GHT.

Don't glue the spigot in- Billy Boy!
Use it for both jobs. Congrats- and where the Hell are this time?

N

WJHartson
11-18-2005, 07:08 AM
Nice job on the radius turner.

Joe

jkoper
11-18-2005, 07:59 AM
Nice job!! Thats a pretty ambitious project.


Jim

billyboy
11-18-2005, 08:03 AM
hi, if anyone is interested in making this tool the plans and kits are available from www.hemingwaykits.com (http://www.hemingwaykits.com) for £42.00, im not sure if they ship to the U.S but if you email them they are very helpfull and they really are nice people to talk to, although this particular tool is not made from a kit or plans. Norman, im going to make mt2 and a mt3 shafts to fit directly onto the head as to fit my machinery, the axle thread into the head is an m14 so can be removed as and when i need to, as ive never done any thread cutting on a lathe before i was going to use a largish tap and die for the rear thread, ive read a lot about threading and got to work on a 30 tpi thread on the axle, it worked out fine first time, the threads are a nice snug fit.

bill

[This message has been edited by billyboy (edited 11-18-2005).]

winchman
11-18-2005, 08:12 AM
That's really nice. Can you post a picture of it mounted on the lathe?

Roger

billyboy
11-18-2005, 08:39 AM
here you are roger, mounted on the lathe.
http://i14.photobucket.com/albums/a333/billyboy_/balllathe1.jpg

http://i14.photobucket.com/albums/a333/billyboy_/balllathe.jpg

bill

Mcgyver
11-18-2005, 08:52 AM
great job, like the pics showing it on the lathe - now i get it http://bbs.homeshopmachinist.net//biggrin.gif basically made yourself a boring head, nice project

winchman
11-18-2005, 09:21 AM
Thanks, that really helps me understand how it works.
Roger