Ulma Doctor

Infinitely Curious
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Cross Drilling Fixture from an AXA Boring Tool Holder!
i had an idea to make a cross drilling fixture for my shenwai 1236 lathes' AXA clone toolpost.
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i machined the shaft from 3/8" 12L14 hex shaft and single point threaded the drill chuck end to 3/8-24 to accept an old but new Jacobs short 1/4" capacity chuck.

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i left just enough of the hex so that i can put a 3/8" wrench on the spindle to remove the drillchuck
the shaft is supported by 2 mini bearings, one inboard, one out board.

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the clamping action of the sleeve in the boring bar holder is sufficient to keep the shaft in place during the cross drilling operations.


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an old 19.2 craftsman drill is powering the works.:grin:
estimated total project cost= under $5 (i had everything on hand and had to assign a nominal cost:cool 2:)
thanks for looking!
 
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That's a cool project, Mike. I can think of a couple instances where I could use such a tool.

Did you use the back gears to lock the spindle or do you have a slick indexer for the spindle?
 
Nice Job!
I could use one of those today.......I may have to go thru my parts bins.......hhhhmmmmm

-brino
 
That's a cool project, Mike. I can think of a couple instances where I could use such a tool.
Did you use the back gears to lock the spindle or do you have a slick indexer for the spindle?
Thank You Nez,
I used the back gearing for positioning, but i'm going to need to make up an indexing plate of some kind.
it was pretty easy to make, machining the shaft to fit the bearings was the time consuming part.

Very cool idea!
Thank you Mikey!

Nice job Mike.
Thank You Thomas!

Nice Job!
I could use one of those today.......I may have to go thru my parts bins.......hhhhmmmmm
-brino
Hi Brino,
i'd love to see your version!

UD, now that's yankee ingenuity!...Dave
Thank You Dave!
i try to think out of the box whenever possible :grin:
 
Mike...Great job! I need something like that for my current project. Now I need to filter through my scrap...er...spare parts bins! :D
Thanks for sharing!!!
 
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