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Chris165
09-19-2011, 07:50 PM
Saw the plans for a home built turret lathe on the Home Shop Supply website. I don't really need one it just looks like a fun project including the concrete lathe bed. I'm wondering if anyone has built anything like this or designed one for a lathe in the 6" to 9" swing range. I also have a Sherline if anyone has made a turret that small.


http://www.homeshopsupply.com/tllast.pdf

jhe.1973
09-19-2011, 10:56 PM
Hi Everyone,

Funny you should post this. Iíve been going through photos today and loading a bunch to Photobucket & my adaptation to my South Bend was one of the things I uploaded.

These photos show how I turned my 16in SB into a chucker actually.

This was a job I got regularly and cranking the carriage out of the way & sliding the tailstock back & forth took WAY too long.

There is no why reason this couldnít be done on a smaller lathe.

The first photo shows the turret setup to face, turn, c-drill, drill/step drill and tap in one setup.

The second shows the indicator I used to bring the crosslide back to zero.

Third shows the deeeelux hand brake that worked beautifully. Just a flat piece of cheery I had on hand.

I stopped using the tailstock completely and finally made some money per hour!

http://i1096.photobucket.com/albums/g327/jhe-1973/Shop%20tricks/Turret%20lathe/2-23-02a.jpg

http://i1096.photobucket.com/albums/g327/jhe-1973/Shop%20tricks/Turret%20lathe/2-23-02b.jpg

http://i1096.photobucket.com/albums/g327/jhe-1973/Shop%20tricks/Turret%20lathe/2-23-02c.jpg

Chris165
09-20-2011, 08:17 AM
I have a 16" SB and in the bottom of the top picture what function does that bolt perform? The one with the wrench on it.

JCHannum
09-20-2011, 09:39 AM
Downriver Tools has plan sets available for tailstock turrets. One for 6" Atlas And 7 X 10 chicom lathes and a larger version for 9 7 10" lathes. It is a nice looking piece of kit when finished, they displayed at NAMES and advertise in HSM.

http://www.downrivertools.com/services.html

It could probably be scaled up for larger machines by adding a spacer. This is what South Bend did.

jhe.1973
09-20-2011, 11:05 AM
I have a 16" SB and in the bottom of the top picture what function does that bolt perform? The one with the wrench on it.

That bolt is for a clamp that locks the carriage.

Especially useful when performing an operation where any sideways movement would be a problem as when cutting a deep groove or parting off stock.

:)

Chris165
09-20-2011, 09:21 PM
Has anyone built the Downriver Tools version? I'd like to build the one they show for the 6" Craftsman, allthough I'm wanting to keep that lathe as original as possible. And for as cheap as the mini lathes are, I could build a dedicated turret lathe.

J Tiers
09-20-2011, 11:18 PM
Why are folks calling the bed turret a tailstock turret?

Downriver tools is, for sure..... Them's a bed turret......... cuz it sits on the bed of the machine, I'd hazard to guess.....

AFAIK a tailstock turret is the thing you stick in the tailstock (hey, mebbe that's why the name!) that has an angled dial with tooling holes in it. You get 5 (usually) tool positions.

Some tailstock turrets have a depth stop dial as well, but ALL bed turrets do that I have seen.

Most of the true tailstock turrets are best used with drills, reamers, and maybe boring bars, etc, nothing bulky like a box tool , knee tool, etc.

but a bed turret setup like the Downriver tools thing is a bigger item and has room for regular turret lathe tooling. Theirs looks a lot like an original Logan (or likely an original S-B, for that matter).

Arthur.Marks
09-21-2011, 01:28 AM
You say "tomAto", I say "tOmato" :D

Ian B
09-21-2011, 03:18 AM
JT,

Then we come to the difference between a turret lathe and a capstan lathe!

My understanding fwiw is that both have the familiar hexagonal rotating toolholder. A turret lathe uses the bed as the working slide, whereas a capstan lathe has a separate block clamped to the bed with a slide on it, parallel to the bed.

Something like this:

http://www.ebay.co.uk/itm/Harrison-M400-Lathe-Capstan-Unit-Turret-Attachment-/120685028573?pt=UK_Home_Garden_PowerTools_SM&hash=item1c196364dd

Ian

J Tiers
09-21-2011, 08:18 AM
You say "tomAto", I say "tOmato" :D

That works for some things.......

But if you reverse "stop" and "go", "inside" and "outside", it gets a bit beyond semantics, eh?

Society has already reversed "right" and "wrong" a bit, and you see where THAT got.

At some time you have to agree on what to call the darn thing.... I don't care much WHAT sort of "throat gargle noise" you use, so long as it's consistent.....

If you have to kill a "lion" and bring back the head in order to be accepted as a warrior, it will get a bit thick if prospective warriors bring in the heads of rats, parakeets, and monkeys with the comment "that's what the word 'lion' means to me".............................

JCHannum
09-21-2011, 09:06 AM
I would hazard Downriver Tools is calling their tailstock turret that because it replaces the tailstock completely. The turret is in the horizontal plane and can include a center as an attachment.

The turret attachment with the MT tang which is installed in the ram of a turret is a tailstock turret attachment.

gr8life
09-22-2011, 11:13 PM
I posted a reply earlier & can not find it, senior moment. Here is a turret I built earlier this year. It sits on the cross slide and takes 10-15 minutes to set up.
thanks
ed
http://i461.photobucket.com/albums/qq336/gr8lifeLV/Turret003.jpg

Chris165
09-25-2011, 07:23 PM
Has anyone built the lever type turret where the next tool moves into position upon retracting the lever? How does this mechanism work? I have not been able to find a cutaway view of it.
Looking at the specifications from Downriver Tools, I noticed that the MK1 has a 4" maximum cutting depth while the larger MK2 only has 2". The MK1 has automatic tool indexing with two locking methods and the MK2 has semi-automatic tool indexing. Does this mean that on the MK1 you have to manually unlock/lock the turret for a tool change?

Chris165
09-25-2011, 07:31 PM
I posted a reply earlier & can not find it, senior moment. Here is a turret I built earlier this year. It sits on the cross slide and takes 10-15 minutes to set up.
thanks
ed
http://i461.photobucket.com/albums/qq336/gr8lifeLV/Turret003.jpg

That is a very nice set up you have there. How is it attached to the cross slide? Does it just bolt to where the compound goes, or is it bolted in the back too?

gr8life
09-25-2011, 11:40 PM
I made the base to fit the recess in the cross slide+ the 2 T bolts that you see sticking up and it is also bolted where the follow rest would bolt to the cross slide. Each of the 6 stations will index just about as quick as a lever activated turret. The main advantage to this unit is it will drill under carriage power. I just today finished a run of about 70 pieces all of the drilling and chamfering was done w/ this unit. I have some build pictures and will post them if there is any interest.
thanks
ed

Chris165
09-26-2011, 07:47 PM
I made the base to fit the recess in the cross slide+ the 2 T bolts that you see sticking up and it is also bolted where the follow rest would bolt to the cross slide. Each of the 6 stations will index just about as quick as a lever activated turret. The main advantage to this unit is it will drill under carriage power. I just today finished a run of about 70 pieces all of the drilling and chamfering was done w/ this unit. I have some build pictures and will post them if there is any interest.
thanks
ed

Yes, please post some pictures. I'd also like to see how the indexing mechanism works. What size lathe is that on, it looks like it would make a nice addition to my 16" South Bend.

tdmidget
09-26-2011, 09:09 PM
J Tiers is absolutely right. The machining trade ( and by extension, the hobby) is all about precision. If you do not bother to learn and use the correct terminology then you are not a machinist, hobby or professional. That leaves you in the "billet" crowd. This forum is for communication. We won't be communicating if everyone uses backwoods colloquialisms or makes it up as he goes.

gr8life
09-26-2011, 11:31 PM
The lathe is a Grizzly G4003G 12x26. I will try to post a few pictures I took during the build and will try to answer any questions.
thanks
ed
http://i461.photobucket.com/albums/qq336/gr8lifeLV/Turret/100_0499.jpg
I used this Loctite to hold the puck that sits in the recess for drilling

http://i461.photobucket.com/albums/qq336/gr8lifeLV/Turret/100_0500.jpg
more next post

gr8life
09-26-2011, 11:38 PM
Cut recess in turret body
http://i461.photobucket.com/albums/qq336/gr8lifeLV/Turret/100_0485-1.jpg
This is the base side up drilling for 6 locating pins
http://i461.photobucket.com/albums/qq336/gr8lifeLV/Turret/100_0490.jpg

gr8life
09-26-2011, 11:43 PM
I cut the "cam" on my Lagun mill. I started full depth and set the quill feed up and rotated the rotary table while cutting. I made a prototype in alum. to get the timing down. This would be easier w/ a left hand cutter because this was all climb cutting but it worked out in the end.
http://i461.photobucket.com/albums/qq336/gr8lifeLV/Turret/100_0508.jpg
http://i461.photobucket.com/albums/qq336/gr8lifeLV/Turret/100_0506.jpg

Tony Ennis
09-26-2011, 11:44 PM
That leaves you in the "billet" crowd.

Wow, that's harsh! lol

gr8life
09-26-2011, 11:44 PM
I will try to post some more pix tomorrow night.
thanks
ed