morse taper tool holder

[atconut]

interesting that nice job. how did you bore it out bet it's tough stuff. and i can't get to the back side of the pins to punch them through

 

[BrokenBiker]

Chuck the work piece up off centre in a 4 jaw chuck?

still use the tail stock to drill though wouldnt you as the hole would still be inline with the axis of the lathe...

 

[Shox Dr]

Actually, come to think of it, might come in handy for fitting a reamer but the fact that the toolpost can easily be off centre makes using any centering tool rather fraught!

Youre not thinking it through, you have all the adjustment required to centre the tooling relative to the chuck. As I said a coaxial indicator is fast way of dialing it in.

 

[BrokenBiker]

Actually, come to think of it, might come in handy for fitting a reamer but the fact that the toolpost can easily be off centre makes using any centering tool rather fraught!

the tailstock on a lot of machines can be easilly off centre too

 

[ukracer]

I have several of the morse taper socket T2 sized Dickson holders I've acquired over the years, and I have to say they're not the most useful holder in the set ! Being T2 the socket is No 2 Morse so presumably yours are T3 or smaller?

The most useful thing I did with one of them was to bore it out and make a Ball Turner based on it . Looking at the pictures it seems that was in 2004!


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Don't suppose you have any build pics etc. I can't quite see how it works..

 

[awemawson]

No plans - it evolved from a worm wheel and pinion that had sat in my desk drawer for decades! The little box the worm and wheel are in were an early exercise on my CNC mill, but it's so simple that it would be easy on a manual mill.

I wrapped the original holder in stainless steel foil (to minimise oxidation) then heated it in a Muffle Furness to soften it, then bored it out on the lathe. The clever bit is a Taiwanese (fore runner of Chinese!!!) boring head with a parallel spindle that has a thrust bearing between the head and gear box.

Operation is simple. Set the diameter of the ball you want by adjusting the offset of the boring head. Then turning the handle gently rotates the head, the cutter moving in an arc forming the ball.

 

[Screwdriver]

Youre not thinking it through, you have all the adjustment required to centre the tooling relative to the chuck. As I said a coaxial indicator is fast way of dialing it in.

No I am thinking it through, it's just that in a toolpost holder you have to set all three axes (at least two of them every time) compared to bonking it into the tailstock...

the tailstock on a lot of machines can be easilly off centre too

...which you would only have to set up once.

S.

 

[BrokenBiker]

you would have to set the tailstock up every time you moved it...if you were cutting long tapers etc then it would need setting up afterwards...i have known a tailstock to move after being knocked on a hardinge lathe i used to work on.

using a toolpost holder could be better than using the tailstock espceially on smaller lathes that arent as sturdy...my chester had a fairly sturdy tool post but the tail stock was a bit iffy...didnt know at that point that you could get these holders though

 

[Screwdriver]

you would have to set the tailstock up every time you moved it...if you were cutting long tapers etc then it would need setting up afterwards...i have known a tailstock to move after being knocked on a hardinge lathe i used to work on.

using a toolpost holder could be better than using the tailstock espceially on smaller lathes that arent as sturdy...my chester had a fairly sturdy tool post but the tail stock was a bit iffy...didnt know at that point that you could get these holders though

And if my aunt had balls, she'd be my uncle. Yes you would have to set up the tailstock every time IF you were cutting a taper. If not, you can generally rely on it not to drift. My Colchester Student would survive a small thermonuclear blast so I wouldn't expect it to drift that far out of dead centre with anything less.

Having said that, using a live centre in the toolpost holder to cut tapers might just be the most useful purpose for having one. Then you wouldn't have to fiddle with your tailstock every time a Nuke goes off...

S.

 

[BrokenBiker]

And if my aunt had balls, she'd be my uncle. Yes you would have to set up the tailstock every time IF you were cutting a taper. If not, you can generally rely on it not to drift. My Colchester Student would survive a small thermonuclear blast so I wouldn't expect it to drift that far out of dead centre with anything less.

Having said that, using a live centre in the toolpost holder to cut tapers might just be the most useful purpose for having one. Then you wouldn't have to fiddle with your tailstock every time a Nuke goes off...

S.

if you are using the live centre in the tool post to hold the end of the bar offset...what are you going to use with as now you cant move the tool post or put a cutting tool in...

 

[Screwdriver]

Haha!

Foiled!

 

[Screwdriver]

So really then, the Dickson morse taper holder is a bit useless. No wonder mine also came in it's original wrapper!

 

[BrokenBiker]

Haha!

Foiled!

i must admit i had considered the same thing and had started typing it when i realised someone would point out my error