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What would the lathe holder be used for?

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KBeitz

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#1
Would this be for boring bars? I've had it for years but never used it. I'm not sure what the collet size is.

DSC01746.JPG DSC01745.JPG DSC01749.JPG
 

T Bredehoft

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#2
It might be a "make do" to hold a broken (salvaged) end mill in a lathe as a boring bar. It wouldn't fit in a lantern tool post, though.
 

dlane

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#3
Looks like a tool post drill bushing guide , I want one
 

keebie1984

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#4
It might be a "make do" to hold a broken (salvaged) end mill in a lathe as a boring bar. It wouldn't fit in a lantern tool post, though.
Why wouldn’t it fit in a lantern post?


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benmychree

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#5
If used in a lantern tool post in the normal fashion, the head could swivel in conjunction with the tool post rocker to attain center height and parallelism between the spindle axis and the boring bar.
I have a similar boring tool holder made by the Bokum Boring Tool Co. that achieves this with a adjustable clamped vertical dovetail joint between the shank and the tool holding bore. It is to my eye, a boring tool holder.
 

Dabbler

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#6
I agree with ben.
 

T Bredehoft

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#7
Why wouldn’t it fit in a lantern post?

I hadn't considered that, seems that aligning three axis (horizontal, up and down, and vertical height (center of work) would be daunting, but what do I know.
 

Dabbler

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#8
The swivel at the head allows you to make all 3 adjustments in a lantern type tool post. If it was fixed, it would be for a QCTP. With the swivel head it can be used anywhere... looks like a nice piece of kit.
)
 

KBeitz

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#9
OK.... Thats what I'll use it for....

Thanks all....

Dsc08683.jpg
 

benmychree

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#10
Here are some pics of the similar tool that I talked about in my earlier post; this holder adjusts vertically to adjust the boring bar to center height, made by Bokum Tool Co. takes 1/2" shank tools, with apologies to them, not one of their boring tools pictured in it., their tools are form ground, and are only sharpened on top, and have a back rake, and cut very freely, they come in several styles, including lead angle, flat bottom, threading, chamfering and grooving, from tiny to big.
 

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Dabbler

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#11
That Bokum tool looks sweet!
 

benmychree

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#12
All Bokum tools ARE nice! I buy them on E Bay; I may be selling some of them before too long.
 
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