Author Topic: Myford Taper Turning Atahment AGIAN  (Read 58894 times)

Rob.Wilson

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Myford Taper Turning Atahment AGIAN
« on: December 06, 2009, 09:22:28 AM »
HI All
Here we go agian,, A good friend has setup a site for me to store my photos and with the help of another who had saved a few of my photos that he sent back to me and the few i have left ,i will try agian .

I started with the main bracket for the TTA ,,this is a welded construction ,i would normally do a casting for something like this, but  for quickness i decided to just weld it up ,and i am pleased i did,,, as i had copyed a TTA for an ML7 and i have a S7 so the bracket has to be wider ,as the S7 has a longer cross slide . so i just had to weld up an exstention piece and stick it on.would have been a differant story if i had made a casting  :doh:
The bracket part befor welding showing weld prep

welded up


then the bracket was heated up in the furnace to stress reife it

the i machined it up square


an at this point i tried it against the lathe and relised my mistake ,,to short  :doh: so i welded up an exstention piece and welded that to the bracket




Regards Rob


« Last Edit: December 06, 2009, 09:26:04 AM by Rob.Wilson »

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #1 on: December 06, 2009, 09:59:10 AM »
Next a made the guide,from a lenght of BMS bar that was also stress relived ,, i stress relive nearly all parts i make from BMS, as due to the cold rolling prosses there is allot of stress built up in the bar,, and if you machine more off one side than the other you remove the tention from that side and the stress thats left in the other side will pull the part bow shaped ,in the direction of the side with more material left on it,which is a real pian when you may have spent many hours machining up a part , say like a model engine crankshaft from solid , if you have a part the may bend due to this affect and un able to stress relive the part ,like a crankshaft ,, i would use HOT ROLLED BAR for the part,hope this may save some one waisted time and materals,,as it has caught me out a few times .





the guide was then set up on the R/T using a 2mt plug to locate it , using the plug to set the mill spindle on the same axis as the R/T , locking the y axis and zero in the dial on the x axis , Do not move Y axis,,


now with the R/T set to zero , this needs to be set to zero as the last operation is to engrave the scale,, place the guide bar on the plug , and clamp loosely ,now the guide needs to be clocked in along its lenght so its now parralel with the X axis


when  the DTI reads zero at both ends lock the guide to the R/T

Regards Rob
« Last Edit: December 06, 2009, 04:14:30 PM by Rob.Wilson »

Offline dsquire

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Re: Myford Taper Turning Atahment AGIAN
« Reply #2 on: December 06, 2009, 12:56:53 PM »
Rob

Thanks for redoing this article on the Myford Taper Turning Attachment. I am sure that it will be well received and appreciated by many. Good work. :ddb: :ddb:

Cheers  :beer:

Don

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Offline Bernd

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Re: Myford Taper Turning Atahment AGIAN
« Reply #3 on: December 06, 2009, 01:04:29 PM »
Rob,

Thank you very much for reposting. Glad some people had the forsight to save some of your pics. Wish I had.
One reason I'm so iterested in the thread is I want to add one to a Grizzly lathe I've started to modify. I have welding equipment to do the same.

Don't want to panic you, but one pic didn't show up. There's a little red x in the box. Check to make sure that you typed in the right wording. No biggie, if you need help just yell somebody will help.

Regards,
Bernd
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Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #4 on: December 06, 2009, 04:36:21 PM »
Thanks Don and Bernd

Bernd i have no idea why that photo will not show  :scratch: i am seeking help on it thanks ,,, If you or anyone is interested i could do drawings for the TTA which could be adapted for most lathes .

With the guide now set up on the R/T the ends were milled and slots cut



the next job was to cut the degree scale ,this was done with an old endmill ground up to a 30 deg point ,just like a lathe threading tool ,making sure the piont was in the center of the tool, with the mill spindel locked , a 0.3mm cut put on and the mill table was advanced , using the R/T dial to get the correct spaces



then cleaned up with some 400 wet and dry


Regards Rob


Offline Bernd

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Re: Myford Taper Turning Atahment AGIAN
« Reply #5 on: December 06, 2009, 05:08:12 PM »
Rob,

Yes, definatly I would be interested in drawings. But take your time doing the taper attachment.

I do like the way you put those graduations on. Very ingenious.  :thumbup:

Bernd
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Offline CrewCab

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Re: Myford Taper Turning Atahment AGIAN
« Reply #6 on: December 06, 2009, 05:30:34 PM »
Welcome back Rob, glad you've managed to resurrect this thread mate, it's very popular and a bloomin good read  :thumbup:

CC

Offline tinkerer

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Re: Myford Taper Turning Atahment AGIAN
« Reply #7 on: December 06, 2009, 08:12:28 PM »
You are doing a great job. I am anxiously awaiting to see how this is geared to drive the cross slide, if that is how this works.
Tink

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Offline Brass_Machine

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Re: Myford Taper Turning Atahment AGIAN
« Reply #8 on: December 06, 2009, 10:15:20 PM »
I agree!. That is some fantastic work my friend.

Glad you are back.

Eric
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Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #9 on: December 07, 2009, 11:55:53 AM »
THANKS LADS ,,,,for your comments and interest


tinkerer ,your are correct , the cross slide lead screw is disconected ,so that it is free to move back and forth , when conected to the TTA by a link it follows the angle set on the guild.

next the slider was machined up from a lump of BMS ,, it was milled all over square ,then set in the four jaw chuck to machine a boss on one face, the the dovetail section was machine



then the corners were given a radius

then i case harden it , just to stop the guide and slide picking up as they slide across each other, both being of BMS,  the part was heat up and the placed into the case harderning powder ,re heated and placed back in the powder to cool

here it is black and crispy after cooling,,the reason for letting it cool was so i could spot face and drill the holes for the three M4 grub srews,this removes any case harderning in this area,so i can tap the threads after harderning,,,if i had just tapped the threads first they would not survive the heat treatmemt.

after re heating and quenching,now a grey color and with a very hard skin,and the threads tapped


Regards Rob

getting there



« Last Edit: December 07, 2009, 11:59:07 AM by Rob.Wilson »

Offline sbwhart

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Re: Myford Taper Turning Atahment AGIAN
« Reply #10 on: December 07, 2009, 12:11:17 PM »
Very nice work ROB  :clap: :clap: :clap:

I like your thinking ahead with the case hardening and tapping the screws, Just how big are these parts that dove tail slide must be about 4" * 6" ?

Thanks fro showing

Stew

A little bit of clearance never got in the road
 :wave:

Location:- Crewe Cheshire

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #11 on: December 07, 2009, 05:01:42 PM »
Thanks Stew

the slidder part is about 3 1/2 X 2 1/2 X 1 1/4 ,,,,Note to self ,,must put some thing in shot for scale  :doh:


The next part to be made was the link that connects the lathe cross slide to the TTA
this was milled up from some flat stock to leave the center section high

then a slot and the hole for a t bolt to fix it to the cross slide


then i set it up on a angle plate to mill the tapperd section

set up on the R/T to have the ends milled ,




then it was finished off with a file to add a radus around the top edge

still a couple of holes to drill

Regards Rob


Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #12 on: December 08, 2009, 02:25:46 AM »
Hi All

next out with the piant





then i made some of the smaller parts that join everything together





right were up to date now ,, tonight i hope to get some shop time and do a bit more

Regards Rob

Offline sbwhart

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Re: Myford Taper Turning Atahment AGIAN
« Reply #13 on: December 08, 2009, 02:30:50 AM »
Stunning Job Rob

 :clap: :clap: :clap: :clap: :clap: :clap:

Stew
A little bit of clearance never got in the road
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Offline dsquire

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Re: Myford Taper Turning Atahment AGIAN
« Reply #14 on: December 08, 2009, 02:55:21 AM »
Rob

You have done a superb job of both machining and finishing the Myford Taper Turning Attachment as well as documenting it so that others may use it as an example when building their own. You have every right to be proud of this build and MadModder is a better forum because of it. Thanks again for re-posting this for all of us.
                           :D :ddb:  :D:ddb: :D :ddb: :D

Cheers  :beer:   :mmr:

Don
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bogstandard

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Re: Myford Taper Turning Atahment AGIAN
« Reply #15 on: December 08, 2009, 05:15:09 AM »
Rob,

An absolutely stunning example of how a piece of tooling should be made.

There are times for a lash up job, and times like yours, where you are making a piece of tooling to last at least one lifetime, and maybe a lot longer.

Fantastic work, that we should all aspire to copy.


Bogs

Offline Bernd

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Re: Myford Taper Turning Atahment AGIAN
« Reply #16 on: December 08, 2009, 09:09:39 AM »
Rob,

What everybody else has said I'll double that.

I'm really glad you decided to repost this. Now all I need to do is get some of my smaller projects done so I can get back to my lathe rebuild.

Bernd
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Offline Darren

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Re: Myford Taper Turning Atahment AGIAN
« Reply #17 on: December 08, 2009, 09:44:37 AM »
I'm truly impressed that that could be made at home to such a high standard ...  :clap: :clap: :clap:
You will find it a distinct help… if you know and look as if you know what you are doing. (IRS training manual)

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Re: Myford Taper Turning Atahment AGIAN
« Reply #18 on: December 08, 2009, 12:45:19 PM »
Rob,

Thank you for re posting!  :thumbup:

Really admirable workmanship.....   :bow:

David D
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Offline John Hill

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Re: Myford Taper Turning Atahment AGIAN
« Reply #19 on: December 08, 2009, 02:39:52 PM »
A very nice project and an excellent account of how you carried it out. :thumbup: :thumbup:
From the den of The Artful Bodger

Offline CrewCab

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Re: Myford Taper Turning Atahment AGIAN
« Reply #20 on: December 08, 2009, 02:48:41 PM »
Good to have you back Rob, that's top class work mate  :thumbup: ........... thanks for posting.

CC

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #21 on: December 08, 2009, 04:44:04 PM »
Hi LADS

i would just like to say that i am over whelmed at all your comments,,  THANKS LADS

I still have a few parts to make , as i have man flue all a managed tonight was the indicator for the scale , i did cheat and used my small Denford CNC mill to cut the Polycarb
I am still learning CNC (slowly) and so far i have only done a few name plates and things on it ,simple 2D stuff ,,so i will have lots of questions for those members who have more experience using CNC
The mill
 
A few shots maching the  4 mm polycarb



then i set it up in the mill , using the same cutter i used to do the graduation ,i cut a groove in the plastic for the indicator mark,i just ran the cutter back and fourth a few times


then i filled the groove with a bit black paint

I still have a spacer to make to mount it to the main bracket

Thanks again Rob
« Last Edit: December 08, 2009, 04:45:53 PM by Rob.Wilson »

Offline kvom

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Re: Myford Taper Turning Atahment AGIAN
« Reply #22 on: December 08, 2009, 07:29:21 PM »
Great job   :thumbup:  -- makes me glad my lathe came with a TA already.

Offline DeereGuy

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Re: Myford Taper Turning Atahment AGIAN
« Reply #23 on: December 08, 2009, 09:57:26 PM »
Rob, just caught this post...I am in awh...just amazing work...

Offline Dean W

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Re: Myford Taper Turning Atahment AGIAN
« Reply #24 on: December 11, 2009, 02:38:25 AM »
Rob, glad to see this back up for all of us to have a look at.   I saw it a short while back, then couldn't find it.
Where did you get that delicious color for the ball handle and clamp?  Looks great!

Dean
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Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #25 on: December 11, 2009, 11:53:19 AM »
Many thanks Kvom and  deere_x475guy


Rob, glad to see this back up for all of us to have a look at.   I saw it a short while back, then couldn't find it.
Where did you get that delicious color for the ball handle and clamp?  Looks great!

Dean

Thanks Dean ,,i just heat the parts up to get that blue color ,its quite easy to get a range of colors ,,just like tempering steel ,,,i scaled up the method used by clock makers ,,i can do a how to ,,if anyone is interested


Regards Rob


Offline Darren

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Re: Myford Taper Turning Atahment AGIAN
« Reply #26 on: December 11, 2009, 11:55:03 AM »
What a silly question ....  :)

I'm sure it's easy to do .... when you know how  :thumbup:
You will find it a distinct help… if you know and look as if you know what you are doing. (IRS training manual)

Offline dsquire

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Re: Myford Taper Turning Atahment AGIAN
« Reply #27 on: December 11, 2009, 12:29:36 PM »
Rob

Rob, I would love to see a article on how to heat treat the handles to achieve the beautiful finish that you did.  :ddb: :ddb:

Cheers  :beer:

Don
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Offline Dean W

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Re: Myford Taper Turning Atahment AGIAN
« Reply #28 on: December 11, 2009, 01:28:29 PM »
Thanks Rob.  I don't know why I didn't think of that. 
Done it many times for bluing.  Brain block, I guess.

It certainly is a beautiful build all 'round!
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Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #29 on: December 19, 2009, 12:01:43 PM »
Cheers Lads

I will do a post on Bluing over the holidays

I mamaged to get the TTA finished today ,well all bar a few small screws ,,




Here is a shots of it fitted to the lathe

The lead screw disconected ,to allow free movement of the cross slide

And a shot of it in action 5 deg tapper

Over all i am very pleased with it ,,now i will have to set too and make up some 2and 3 MT tooling

Regards Rob
« Last Edit: December 19, 2009, 12:17:28 PM by Rob.Wilson »

Offline dsquire

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Re: Myford Taper Turning Atahment AGIAN
« Reply #30 on: December 19, 2009, 02:52:28 PM »
Rob

I can only watch this thread for a couple of minutes at a time because of the drool factor. Don't want to short out the keyboard. Love your avator too by the way.  :ddb: :ddb:

Cheers  :beer:

Don
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Offline Bernd

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Re: Myford Taper Turning Atahment AGIAN
« Reply #31 on: December 19, 2009, 07:26:26 PM »
Very nice job Rob. Looks very proffesional.

Glad you decided to repost this. It's an encourgement for others to do the same. Thanks.  :clap:

Bernd
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Offline Darren

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Re: Myford Taper Turning Atahment AGIAN
« Reply #32 on: December 19, 2009, 07:53:17 PM »
If you told me that was a commercial item I would have believed you  :bow: :bow: :bow:
You will find it a distinct help… if you know and look as if you know what you are doing. (IRS training manual)

Offline Gerhard Olivier

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Re: Myford Taper Turning Atahment AGIAN
« Reply #33 on: December 20, 2009, 02:26:17 AM »
Rob

That is a tool to be proud of that is excellent fabrication.

Gerhard
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Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #34 on: December 20, 2009, 04:40:49 PM »
Thanks Lads ,,,,for your very kind coments and taking the time to have a look ,,,CHEERS

Regards Rob

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #35 on: December 18, 2012, 11:16:04 AM »
That is the best tapering tool I have seen and plan on doing one in the new year following this layout. 

I am looking for the bluing "how to" but can't find it. 
Did it get done?  Does someone have a how to?
 

Offline raynerd

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Re: Myford Taper Turning Atahment AGIAN
« Reply #36 on: December 18, 2012, 03:23:01 PM »
Rob, amazing !!!!!!   :drool:

I`m with Dean - please tell us how you got the finish on the handle!

Chris

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #37 on: December 18, 2012, 03:39:18 PM »
I have bought this back from 2009.  Rob are you there? 

Offline krv3000

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Re: Myford Taper Turning Atahment AGIAN
« Reply #38 on: December 18, 2012, 03:45:41 PM »
well dun rob

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #39 on: December 18, 2012, 03:57:27 PM »
Thanks Chris and Bob

Welcome to Madmodder  outlawspeeder

Its a very basic process to build up an oxide layer on the part   , polish your part ,then CLEAN the part and dont touch it with your paws , you will get grease transfer from your fingers ,were gloves , then evenly heat the part to the desired colour and plonk it in a tub  of clean oil .


Rob

Edit :  forgot to say 3 years on the blued parts still look as good no rust
« Last Edit: December 18, 2012, 04:35:26 PM by RobWilson »

Offline John Stevenson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #40 on: December 18, 2012, 05:25:59 PM »
You want washers under the heads of those button screws you philistine..........................
John Stevenson

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #41 on: December 18, 2012, 05:29:39 PM »
 Geordie philistine if you please John  lol 

Your right , i should of actually made my own fasteners  :palm:


Rob   

Offline PekkaNF

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Re: Myford Taper Turning Atahment AGIAN
« Reply #42 on: December 19, 2012, 06:14:50 AM »
This is very good thread. Very big THANK YOU. I have to print it and mull over to get some pointters.

I appreciate those little bits when you explain reasons for certain desicions like that BMS and welded structures vs. stress relieving part. Any chance for a shot outline for your process...temperature/color hold time, cooling time and "aging". I have turned BMS and MOC shafts oversize, let them turn bananas for two weeks (most pronounced within a day) and then finisturned them. Not very conffident.

Also painting/finishing is bit of mystery to me. Would normal car painting (rust damage fixing and coverup) procedure work?

Pekka

Offline NeoTech

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Re: Myford Taper Turning Atahment AGIAN
« Reply #43 on: December 19, 2012, 10:46:10 AM »
Amazing handywork..  I wish i could fit one of those on my optimum lathe. =)
Machinery: Optimum D320x920, Optimum BF20L, Aciera F3. -- I have not failed. I've just found 10,000 ways that won't work. http://www.roughedge.se/blogg/

Offline Meldonmech

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Re: Myford Taper Turning Atahment AGIAN
« Reply #44 on: December 19, 2012, 04:10:36 PM »
Hi Rob,
            Nice design features, and a great finish, well done.  Have already a mental picture of my next project,  A TTA  for the ML10.  Need a new welder though, mine is only 65 amp Arc. What size welder would you recommend, and is yours a Mig Welder?  I can see some interesting cast parts I intend to make, so am enthusiatic.

                                                       David

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #45 on: December 20, 2012, 12:54:51 PM »
Any chance for a shot outline for your process...temperature/color hold time, cooling time and "aging".

Also painting/finishing is bit of mystery to me. Would normal car painting (rust damage fixing and coverup) procedure work?

Pekka

Hi Pekka

No problem , this is how I go about stress relieving the job , remember my parts are not going to get fitted to the space shuttle ,so everything is done with the mark one eyeball and rule of thumb .

First off SLOWLY and EVENLY heat the parts up to about 750 C a blood red colour (in natural light) then soak at heat for One hour per inch of thickness ,  So if part is an inch thick =1 hour , 1/4 of an inch thick  =15 minutes , get the idea , gets a bit more technical when you have thick thin sections in the same part , But for home shop use just go for working the time out on the thickest part  , Then allow to cool SLOWLY , I just shut the furnace off ,block the blast hole and close the chimney . My furnace is well insulated and it takes a good 24 hours to cool down enough to handle the part ,still warm to the touch. works for me .

Paint ,yes just car paint , the TTA was actually painted with 2K.


Amazing handywork..  I wish i could fit one of those on my optimum lathe. =)


Hi Neo   ,,, Why not ?   There are other types of TTA  that fit to the saddle of the lathe if there is no way of attaching it to the bed . My CUB lathe has that type I can take a few photos of it you would like.


Hi Rob,
            Nice design features, and a great finish, well done.  Have already a mental picture of my next project,  A TTA  for the ML10.  Need a new welder though, mine is only 65 amp Arc. What size welder would you recommend, and is yours a Mig Welder?  I can see some interesting cast parts I intend to make, so am enthusiatic.

                                                       David


Hi David

The design is not mine ,I blatantly copied a Myford one LOL , I use MIG ,TIG and Arc , the MIG witch I used on the TTA is 220 amp . What you need to do is decide on how big and how thick your likely to weld then go from there .

A cast ally bracket for the TTA would be just the job  :poke: lets no if you need photos or drawings (I think I still have drawings)


Cheers Rob


Offline PekkaNF

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Re: Myford Taper Turning Atahment AGIAN
« Reply #46 on: December 20, 2012, 02:01:23 PM »
Hi Pekka
No problem , this is how I go about stress relieving the job....
Cheers Rob
Thank you very much. I'll arm mysef with this information, make some parts a little oversize and bring them to my friends lab oven for a "quick spin".

Pekka

Offline Meldonmech

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Re: Myford Taper Turning Atahment AGIAN
« Reply #47 on: December 21, 2012, 07:38:29 AM »
Hi  Rob,
                    Thanks for the info. Drawings of the bracket and any other parts would save me a lot of time, could then get on with making the patterns. May have to make a new flask, or cast the bracket in two pieces. I have only cast a litre of 'ally' in one pour up to now. Could always follow the Double Boost and give the furnace a new midriff.

                                                                                         Cheers David

Offline ilia-45

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Re: Myford Taper Turning Atahment AGIAN
« Reply #48 on: December 30, 2012, 08:27:04 AM »
Bravo :clap: :clap: :clap: :clap:

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #49 on: January 04, 2013, 12:59:27 PM »
Rob,
Thanks for the reply back from my Dec 20th post.  I bet you thought this thread was done.  Two years after you started, people are still interested in great workmanship.    Thanks for the info on the bluing.  It looks good even under the plastic angle gauge,yes i saw that.   I’ll try bluing this weekend on some scrap.  It will help to keep the shop warm.
 
I have gathered some of the parts needed to build my taper for Grizzly G9249, but still working on some of the details.
Again, it is a piece of art.  You have set the bar high and I hope to a rise to this level of workmanship.

To Rob and anyone willing to give advice.
Here are some odd ball questions:

The back side of my lathe is rough cast.  Not a flat mount.  What do I do? Put the lathe on the mill??? The bed weights more then I want to lift.  Mount the plate, true it (grind as needed) and leave it there? Do four mount studs with standoff plates…
   
I have seen a lot of plans with a dead man bar. Rob, your design works for only that part of the lathe, the first 12-18 inches?  Step in and tell me if my thoughts are wrong.   Is a dead man design really needed?  I don’t do a lot of work out that far to the right and normal I can flip the work…  Thoughts?  Looking for input is it needed?

When you are not using your TTA, do you just leave it loose, remove upper parts, remove all of it and “return it to the museum” for display?

On Rob’s Slider:
He hardened it, the wedge, missing from all photos and text, does it get hardened?   I can see were you may have blued it in one shot.  Is it BSM, or something soft?

Well this got long.  I am adding in some links (hope not to offend) of manuals, sites, to look at before you build.    Some of these are good, some are “here is a thought” and some are, well “you build with what you got to build with”.

So for those that want to look at other plans thoughts:
http://www.wswells.com/data/howto/9_taper_Install.pdf
http://www.strippingknives.com/tools/taper.htm
http://www.gadgetbuilder.com/Taper.html
http://www.homemodelenginemachinist.com/f28/lathe-taper-attachment-6404/

Cross slide modifications required thoughts
http://pics.woodstockint.com/manuals/m1022_m.pdf
http://cdn1.grizzly.com/manuals/h0775_m.pdf
http://content.wmhtoolgroup.com/manuals/man_321442.pdf

Chuck offsets (the what was I thinking thought)
http://www.vintageprojects.com/machine-shop/offsettaperturning.pdf

Last place but an “A” for hitting up the local hardware store to buy pipe:



Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #50 on: January 04, 2013, 01:39:29 PM »
Hi outlawspeeder

Quote
I have seen a lot of plans with a dead man bar. Rob, your design works for only that part of the lathe, the first 12-18 inches?  Step in and tell me if my thoughts are wrong.   Is a dead man design really needed?  I don’t do a lot of work out that far to the right and normal I can flip the work…  Thoughts?  Looking for input is it needed?

The back side of my lathe is rough cast.  Not a flat mount.  What do I do? Put the lathe on the mill??? The bed weights more then I want to lift.  Mount the plate, true it (grind as needed) and leave it there? Do four mount studs with standoff plates…

The Myford lathe has a flat section machined the length of the bed with a series of tapped holes so attachments can be added anywhere along its length  , so the TTA can be positioned just about anywhere.

The "dead man bar" , i take it your talking about  the type of TTA that fits too say a Southbend/Boxford Lathe ,were the complete TTA moves with the saddle of the lathe  and the bar is locked to the lathe bed . This design overcomes the need for a flat on the rear of the lathe to mount the TTA and also easier positioning .

So in your case it would be a more suited design for your lathe, If your were to go for the Myford design of TTA , you could as you say ,spot face /drill tap fixings for studs , by means of an L shaped  drill guide mounted to the rear of the lathe cross slide and extending downwards , that way all your stud holes will be parallel to the lathe ways . (can do sketch if you dont get my drift)

   
Quote
When you are not using your TTA, do you just leave it loose, remove upper parts, remove all of it and “return it to the museum” for display?


 :lol: :lol: leave it on the lathe to get covered in swarf


Quote
On Rob’s Slider:
He hardened it, the wedge, missing from all photos and text, does it get hardened?   I can see were you may have blued it in one shot.  Is it BSM, or something soft?

Yes it was hardened too ,,,,,,,,, I hardened the slider parts as they and the guide bar are all BMS , hardening one set of parts means there will be no metal pick up as the the two parts slide together, I could /should have used cast iron .


Hope that helps

Rob
 

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #51 on: January 04, 2013, 02:22:55 PM »
I understand the "L” guide to drill the holes.  With you opening my mind to move  the rig    :Doh:   , now I am thinking two rows of studs, a mounted plate , the full length of the lathe, with mount points on it.   Kind of make my own machined flat.  If I add a lip for the rig to slide on I don’t have to lift it.  Just slide it to the location, screw it down and set it up and cut.  Time for the  crayon and the napkin again.

What are you using for gas to heat the BSM?  I saw the fire brick, a bit of a blue flame.  Again looking for what works.  I don’t mind trying new things but the wheel is not getting replaced until one of us fabricate an anti friction device. 

All this just to beable to cut a taper?  Love this hobby.

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #52 on: January 04, 2013, 02:49:49 PM »
Your idea to add a steel plate would give you allot more verticality  :med: , I just used Propane to do the heating nothing special .

Rob 

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #53 on: January 07, 2013, 09:34:23 AM »
The bluing worked well, came out really dark on the first swing.  The 2nd shot came out nice.  Sorry no picks.  I did not leave it in as long and got the nice coloring.  Lots of smoke. Hahaha  and no warning.  Yes, I knew it would smoke but next time I’ll do it with the shop door open.
 
The rail is almost out of the crayon and napkin stage.  Looking at a 1/2 by 3 inch hot rolled bar.  Offset mounts will be 1x2x3.  That will give me room to shave off as needed to true it up to the bed.   I will add bosses on the mount points for the taper attachment to give it some to lock on.

I am really sweating the drilling of the lathe and cross slide.  The Grizzly I have has the removable bed, never removed, so mounting on the head side gets tricky. For the cross slide, I want to cut a “T” slot like yours but not sure if this would be a good thing to do.  Really like the two pin, one “T” bolt you picked.  I have to put the slide of and take a good look.

If anyone has cut into a grizzly lathe please let me know how it went.  Looking for the good bad and the ugly of the drilling into the casting.

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #54 on: January 10, 2013, 01:04:36 PM »
"the cold rolling prosses there is allot of stress built up in the bar, and if you machine more off one side than the other you remove... ", Rob.  It will turn in to a rocking chair leg. I got it, and didn't know why until I read this.

If I used hot rolled will I have the same problem?  It cheaper and if I don't have to "cook it"  It will save time and money.

I don't know so I ask,  how else am I to learn.

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #55 on: January 10, 2013, 01:42:58 PM »
Hot rolled is the way to go ,its allot more stable than BMS , I personally like using RHS , the down side is you have to machine all the surfaces .

Rob

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #56 on: January 26, 2013, 01:00:55 AM »
I got it started.  The slider is cut. the wedge is cut.  The track is cut and marked.  I plan on this weekend to move the lathe out and put the beam on the back side.  When I am doing that I fire up the cooker and case harden the slider.
« Last Edit: January 26, 2013, 10:16:10 AM by outlawspeeder »

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #57 on: January 26, 2013, 03:33:47 AM »
Loooking good Outlaw  :clap: :clap: :clap: :thumbup:

Keep the photos coming , would really like to see your setup for doing the beam  :thumbup:, just one thing could you please resize the photos  :poke: just a tad large too view on for forum .

http://madmodder.net/index.php/topic,4735.0.html   ,,,,,,,,,,,,,,,     http://www.faststone.org/download.htm

Rob



Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #58 on: January 26, 2013, 10:20:20 AM »
Sorry about the pic.  Fixed.  I have to get a pallet jack to move the lathe to get the back side. 

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #59 on: January 29, 2013, 03:45:19 PM »
How is the Slide Taper attached to the table?  I have my thoughts on how this can be done but looking to see if there is a way I have not thought of.  I have even include a spacer between the Slider guide and the mounting table on one of my thoughts???  :worthless:???

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #60 on: February 03, 2013, 12:19:17 PM »
Cut the "T" slot in the cross slide last night.  Also pulled the back of the lathe apart.

Offline RadRod67

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Re: Myford Taper Turning Atahment AGIAN
« Reply #61 on: February 05, 2013, 10:41:55 AM »
Rob once again your work is exemplary and inspirational thank you for sharing. Outlawspeeder have you done any drawings for your attachment? I think your Grizzly is closer in design to my C06230A/914 than Robs

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #62 on: February 08, 2013, 09:48:51 AM »
I had only crayons and a napkin when I started. Hahaha  I’ll see if I can get something on paper or in electrons.

I have what I call the “Hard parts” done now.  I have the 4 foot by 3”X1/2” drilled and counter sank two days ago.  It is ready to be mounted to the Lathe.  The plan is to lay #1 bolt in the gap between the head and the bed.  I have a removable bed part that sounded great when I ordered the lathe.  Now after reading other posts, I am afraid to remove or drill it.  The 4 foot will run the full back side of the lathe with stand offs to turn it into a mono rail the attachment will ride on.  I am thinking rollers???  I have aim the rest of the mounts to align with the webs of the lathe bed.

After the mono rail is mounted, it is down to building the moving table the taper will ride on.  Rollers when not I use, clamps when in use.  The first thought was a set of bolt hole in the rail and move the attachment to matching holes.  With clamps it can go anywhere.  It will need something to keep the mono rail clean as it is rolling.

I plan on doing more this weekend but with a test on Monday and the weather is looking like I can brake out the motor bike... so many toys…. 

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #63 on: February 08, 2013, 09:58:38 AM »
How is the Slide Taper attached to the table?  I have my thoughts on how this can be done but looking to see if there is a way I have not thought of.  I have even include a spacer between the Slider guide and the mounting table on one of my thoughts???  :worthless:???

Hi Outlaw , good to see your still cracking on with the project  :thumbup:

Would you like me to take a few more/better photos of the TTA set up ? 


Rob


Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #64 on: February 08, 2013, 02:31:45 PM »
PLEASE I am flying in the dark as I have never used or touch one of the taper setups.   I feel like a Male gynecologist looking up a skirt for the first time.  :bugeye:  I know how it supposed to work, just not sure….  HAHAHAHA

Does the pivot point really need to be bolted or will the screws on each end be enough to stop it from lifting.

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #65 on: February 08, 2013, 03:22:23 PM »
 :lol: :lol: :lol: nice analogy OLS  :lol: :lol:

Pivot point ,,,,,,,,,,,, not sure i get your meaning  :palm:


Rob

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #66 on: February 08, 2013, 03:28:35 PM »
On the flat, the taper pivots. the center mount I saw what just looks to be a pin.  How is that mounted.  A tapered pin, a pin with a head...


Thought you would like that.  :ddb:  If you want a really good laugh... http://bbs.homeshopmachinist.net/threads/57886-A-stroke-of-genius...

Put down you drink before you read it!!!!!! :beer:

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #67 on: February 08, 2013, 03:54:28 PM »
this part ?



Rob

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #68 on: February 08, 2013, 10:45:52 PM »
Ok so the bolt holds the pivot tight to the table.  The upper part, the track?, is free to pivot on the pin.  Does it just sit on it, is there something that stops it from lifting?

Thanks for the pic!!

Offline BillTodd

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Re: Myford Taper Turning Atahment AGIAN
« Reply #69 on: February 09, 2013, 06:45:03 AM »
solidworks 1910  :lol: :lol: :lol: :lol:
Bill

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #70 on: February 10, 2013, 01:37:21 PM »
Here's a few photos 








Lets no if you need any more  :thumbup:

Rob

Offline outlawspeeder

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Re: Myford Taper Turning Atahment AGIAN
« Reply #71 on: February 13, 2013, 12:47:13 AM »
The third photo you added is the big ticket!!  Wow I thought  the pin coming up was threaded and a tight mount from the cross slide to the top of the slide.   I am so happy I didn’t work on that part yet.

So I have the rail mounted.  It stand off the back at 1.75 inches on 5 bolts.  Going from the bottom rail in the back to the top closest edge I have a run out of .0014 over the four foot run.   I checked it at mid and its .0009.  Not bad for a hand drill.  I used the rail as a drill guide with drill guide inserts made for this. 

One end, see photo (#1),  is just clamping across the top of the lathe.  This was due to the removable bed. 

Thanks for the pics, it is helping SO much!!! :D

Rob.Wilson

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Re: Myford Taper Turning Atahment AGIAN
« Reply #72 on: February 16, 2013, 03:19:50 AM »
Nice job of fitting the guided rail  :clap: :clap: :clap: positioning the TTA will be a breeze  :med:


Rob