Author Topic: Tailstock for a Vortex dividing head ?? (Read 20655 times)

ksor · « **on:** September 25, 2013, 01:38:26 PM »

I plan to make a tailstock for my Vortex dividing head.

I had done the attached sketch with a MK2 moveable up/Down and fastened with a 10mm bolt BUT ...

How can I make the up/Down movement ADJUSTABLE with a screw ?

Any ideas ?

RussellT · « **Reply #1 on:** September 25, 2013, 03:35:46 PM »

If you want to do away with the clamping bolt then that seems tricky and would involve precision fit slides. If it's just for ease of adjustment, how about a screw or pair of screws through the top of your slot(s) and tapped into your bolt. You'd probably need some way to prevent the rotation of the bolt (eg flat sides running in the slots) and enough play to allow the bolt to be tightened.

Russell

ksor · « **Reply #2 on:** September 25, 2013, 05:24:02 PM »

Quote from: RussellT on September 25, 2013, 03:35:46 PM

If you want to do away with the clamping bolt then that seems tricky and would involve precision fit slides. If it's just for ease of adjustment, how about a screw or pair of screws through the top of your slot(s) and tapped into your bolt. You'd probably need some way to prevent the rotation of the bolt (eg flat sides running in the slots) and enough play to allow the bolt to be tightened.

Russell

I THINK I can get the "up/Down-parts" (the block with the MORSE taper in it) to slide accurately enough with that milling faces I plan in the block itself and the sides it fits into - don't you think ?

The bolt has a nut on the hidden side ... and I beleave the bolt needs to be free and even removeable.

My first thoughts was a threaded rod (bolt) in two diagonal corners of the MORSE-taper block pushing against the bottum plate . I think I will HAVE TO adjust them BOTH to prevent the 'block' to get stocked between the "ways" - it doesn't look too clever, I think

- would only one bolt do, you think ?

BillTodd · « **Reply #3 on:** September 28, 2013, 03:56:53 AM »

Can your dividing head tilt up &down? If so you may want to allow the tailstock centre holder to do the same.

My Victoria one has two pinch bolts one in a arc shaped slot to allow tilting.

See: http://www.lathes.co.uk/victoria/index.html

ksor · « **Reply #4 on:** September 28, 2013, 01:15:12 PM »

Quote from: BillTodd on September 28, 2013, 03:56:53 AM

Can your dividing head tilt up &down? If so you may want to allow the tailstock centre holder to do the same.

My Victoria one has two pinch bolts one in a arc shaped slot to allow tilting.

See: http://www.lathes.co.uk/victoria/index.html

Oh, yeah that I should allow too

!

As I see the pictures in the link it LOOKS LIKE it can NOT be moved up/Down ... only tilted ... I think I had to be able to move it up/down TOO

... I'll have to re-design a little for both TILTING and MOVING (up/down) to be included - but thx for the idea !

btw ... this Victoria rig of yours looks NEARLY as copy of mine VPF-1 (from Vilh. Pedersen) - look here (teh 5. Picture): http://kelds.weebly.com/mine-maskiner.html

ksor · « **Reply #5 on:** September 28, 2013, 01:50:37 PM »

The "quick & dirty" solution could be this:

But it makes it more difficult to figure out how to do the adjustments with screws, I think

The centerblock is pivotting around and clamped with the 10mm bolt - is this realistic ?

ksor · « **Reply #6 on:** September 29, 2013, 07:47:36 AM »

Here it is - any comments on improvements ?

dsquire · « **Reply #7 on:** September 29, 2013, 01:43:39 PM »

Ksor

If you could come up with a way to have the adjustment done with 1 screw/nut instead of 2 it would be an improvement. What you have shown should work well inspite of the 2 screws/nuts to adjust.

Cheers

Don

ausdier · « **Reply #8 on:** September 30, 2013, 01:05:24 PM »

Just an idea.

ksor · « **Reply #9 on:** September 30, 2013, 04:07:48 PM »

Yeah, real nice ... but I see a pair of problems:

1) you can't raise it high enough - OK, I can make the sides higher.

2) the "tilt" function is not posible

ausdier · « **Reply #10 on:** September 30, 2013, 06:24:26 PM »

1. You answered your own question about making the sides higher ???
2, Why would you want or need to tilt anyway ???
Most tailstocks are set to a particular height anyway and any small amount of tilting by the dividing head is allowed for by the centre in the tailstock.
In this application it is not critical that the centre sit perfectly square in the end of whatever you are tring to hold.
Also depending on the length of work being held you would only have a few degrees of movement before you were out of the range of the tailstock anyway, back to problem 1.
You would find that 99% of the time people will set the height to the centre of the dividing head and then never move it again.

ksor · « **Reply #11 on:** October 04, 2013, 08:09:22 AM »

I saw some videos on Youtube on people using a Vortex looking dividing head with a tail stock Applied, and I noticed a functionality where they could withdraw the pinol (or the Morse Taper) with a big screw handle on the back end of the pinol or the Morse taper.

... I know it's WITHOUT the 'tilt' of the pinol though, but ...

Do you have link to some drawings to give me an idea of how is this working ?

ausdier · « **Reply #12 on:** October 04, 2013, 10:36:50 AM »

I just did this in a few minutes off the top of my head.
If you give me some sizes like size of studs you want to use to hold it down with, prefered working measurments ( metric or imperial ) and morse taper you want to use.
I will see what I can come up with if you like.
Cheers.

ksor · « **Reply #13 on:** October 04, 2013, 12:26:24 PM »

I found one I can use - just not with that long travel !

I think 20mm travel would be appropriate for dismounting and mounting something in between centers - right

http://www.google.com/url?sa=i&source=images&cd=&cad=rja&docid=QDgREp33yCQF-M&tbnid=ekuZXP2VzibRpM:&ved=0CAgQjRwwAA&url=http%3A%2F%2Fwww.woodturninglathes.co.uk%2FTailstock.html&ei=1uFOUoeROOTK4ASd8oDICg&psig=AFQjCNHGd2BH5nxifGQD_PnSM_ilxtPTYQ&ust=1380987734977011

vtsteam · « **Reply #14 on:** October 04, 2013, 12:31:51 PM »

Nice design and drawing, ausdier!

unc1esteve · « **Reply #15 on:** October 04, 2013, 12:54:40 PM »

Tail stock for my Grizzly dividing head.
The center is retracted by the large knob on the back.
It is able to be tilted. I have used this feature
several times.
An up/down adjuster could be added on top.

ksor · « **Reply #16 on:** October 04, 2013, 01:46:18 PM »

Quote from: unc1esteve on October 04, 2013, 12:54:40 PM

Tail stock for my Grizzly dividing head.
The center is retracted by the large knob on the back.
It is able to be tilted. I have used this feature
several times.
An up/down adjuster could be added on top.

I believe the "tilt" function is obtained just by the "misfit" of the two bolts - right ?

The up/Down adjuster in the top would destroy the tilt, I think - right ?

But OK, it's way simpler than mine !

ksor · « **Reply #17 on:** October 04, 2013, 01:49:27 PM »

Here I got it with some threads done the right Places it will Work ... I think

Details on my web site: http://kelds.weebly.com/pinoldok-til-vortex.html

As usual Google-translation to the right under the menu line !

unc1esteve · « **Reply #18 on:** October 04, 2013, 04:53:50 PM »

The tilt and height is adjusted by the two bolts.
I think a linkage type adjustment could be made for the height.
All my tools require adjusting before use.
Maybe make the height adjustment removable?

ausdier · « **Reply #19 on:** October 05, 2013, 06:08:51 AM »

Thankyou very much vtsteam, I try.

Quote from: vtsteam on October 04, 2013, 12:31:51 PM

Nice design and drawing, ausdier!

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Author Topic: Tailstock for a Vortex dividing head ?? (Read 20655 times)