Thread: Adapting morse taper

Originally Posted by Tiger

Got some 2 morse taper drive dogs that i used on my woodworking lathe but the ends have worn so i'd like to recycle them for other purposes. I want to attach shafts/flatten ends to these morse taper stubs but am wondering how to hold these in a 3 jaw chuck on the metal lathe so that i can adapt them for other purposes, can't think of a way to do this but maybe someone out there can.

Hi Tiger,

A picture would help...
However a four jaw chuck on a metal lathe would be the way to go. I must admit I'm curious to learn how the ends have become sufficiently worn to make them unusable.

If the chuck had soft jaws you could bore them to suit the taper. Otherwise you'd need to make a morse socket with a straight OD to grip in the chuck. What's the spindle taper on the lathe? Might be better to buy or borrow an adaptor for that.

Originally Posted by Tiger

Got some 2 morse taper drive dogs that i used on my woodworking lathe but the ends have worn so i'd like to recycle them for other purposes. I want to attach shafts/flatten ends to these morse taper stubs but am wondering how to hold these in a 3 jaw chuck on the metal lathe so that i can adapt them for other purposes, can't think of a way to do this but maybe someone out there can.

I am not 100% sure on what your asking. If you are wondering how to hold the morse tang in a 3 jaw, you could make a two piece bushing with flats milled into each side. Then clamp in the 3 jaw. Or you could drill a hole in some AL, and use a piece of HSS (or even a chisel - doh, tool abuse!) to square out the corners. Then use a set screw to hold the tang in place.

Edit: If you want to hold a morse taper in your 3 jaw, you could bore the taper on the lathe in some round stock, then split the stock and clamp accordingly in the 3 jaw.
That all being said, I am not 100% sure on your question..

Thanks for the quick replies, over time the ends of the drive dogs have worn to the point where they don't grip well. Have got a 4 jaw chuck but its pretty inaccurate, the spindle taper on the lathe is a 3 morse taper, adaptor sounds like a good idea.

Originally Posted by variant22

I am not 100% sure on what your asking. If you are wondering how to hold the morse tang in a 3 jaw, you could make a two piece bushing with flats milled into each side. Then clamp in the 3 jaw. Or you could drill a hole in some AL, and use a piece of HSS (or even a chisel - doh, tool abuse!) to square out the corners. Then use a set screw to hold the tang in place.

Edit: If you want to hold a morse taper in your 3 jaw, you could bore the taper on the lathe in some round stock, then split the stock and clamp accordingly in the 3 jaw.
That all being said, I am not 100% sure on your question..

Variant, think you've nailed it, just looking for a way to hold the tang in a 3 jaw chuck, your idea sounds good, having a little trouble visualising it but it's late at night, will think about it tomorrow, thanks for the idea.

I think one of the problems here may be the cross over of terminology between wood and metal. We all know what a metal drive dog is but i'm betting this is what Tiger is working with
app_4_pro_dri_cen.jpg

Ew

Originally Posted by Ueee

I think one of the problems here may be the cross over of terminology between wood and metal. We all know what a metal drive dog is but i'm betting this is what Tiger is working with
Ew

Hmm, but - Edit.. think your right!

Bore the taper then split in half (or just use a slitting saw/hacksaw/bandsaw to cut one side down the length to create a gap, which when put in the 3 jaw will clamp the taper..) down the length? Or bore the taper and put a couple of set screws to ensure the taper it holds it does not spin?

Originally Posted by Ueee

I think one of the problems here may be the cross over of terminology between wood and metal. We all know what a metal drive dog is but i'm betting this is what Tiger is working with
app_4_pro_dri_cen.jpg

Ew

Correct EW, you guys are on the ball, sorry for any confusion.

Yep ! I assumed wrongly, that they were for turning between centres on a metal lathe.

Thanks for the enlightenment.

Hi Tiger,
I am pretty confident I have a 2 to 3 morse taper socket you can borrow if that would help.

Phil

Originally Posted by Steamwhisperer

Hi Tiger,
I am pretty confident I have a 2 to 3 morse taper socket you can borrow if that would help.

Phil

thanks for the offer Phil, probably a good piece of equipment to own so may have to purhase one as i think this is a job i may be doing more than once.

Originally Posted by Tiger

thanks for the offer Phil, probably a good piece of equipment to own so may have to purhase one as i think this is a job i may be doing more than once.

You can buy them quite cheaply on ebay. I have a few different sizes, they are OK for occasional use.

http://www.ebay.com.au/itm/Lathes-Pa...22360911&rt=nc

I have two of those Morse reducing sleeves/adaptors. A 3 - 2 and a 4 - 3.

Both from different suppliers, both have runout.

I don't like them.

I wouldn't use them for anything where high accuracy is important.

If you do use one, check runout with a test gauge.

Rob

Are these tools you wish to modify hardened?

If attempting to use a morse taper sleeve, it may not be very successful... Like trying to use a milling cutter in a morse taper drill chuck, the morse taper just falls out all the time... They need to be retained with a drawbar...