DIY Lathe - What Headstock?

[Lee Roberts]

Have you got a lathe or access to one?

What kind of tolerances can Thor produce?

Given the effort you put into Thor, I cant wait to see what you come up with this time for a lathe, tool turret on the cards?

[Chaz]

Have you got a lathe or access to one?

What kind of tolerances can Thor produce?

Given the effort you put into Thor, I cant wait to see what you come up with this time for a lathe, tool turret on the cards?

I have my Emco 120 which Ill sell. Just not big enough for what Id like to do.

Tolerances, not checked yet, should be doing some calibration cuts this weekend once I get a new table installed. I'm also aware that I have a slight offset in my Z axis, getting a bit of deviation across the Y plane, when measuring Z movement. This is due to the spindle clamp I am using, Ill probably replace it or machine something better than what I bought.

I have two main options for a lathe. One, use my massive metal structure that I used for referencing as the base for the lathe, simply bolt rails to its one side, install 3 carts each side, fabricate a simple X and Z Table. Toolchanger, multiple options, id possibly got for a non turret option as its easier (I think) based on a large working area.

The idea is that I get a headstock that I can then just add a nice high power servo motor to and go from there.

Another option is to form and cast another concrete structure but this is a lot more work. I may start with the metal structure, prove the concept, then convert it to Concrete (or make another a decommission this one).

[Boyan Silyavski]

Depends on what you will use it for. Have you thought of indexing and lather 4rth axis, all in one? LIke this one . basically that guy has his build log on the cnczone

http://www.theinturn.com/

[Chaz]

Depends on what you will use it for. Have you thought of indexing and lather 4rth axis, all in one? LIke this one . basically that guy has his build log on the cnczone

So something like this on Thor? I am keen to do a 4th axis, so will certainly explore this. Estimated costs?

[Boyan Silyavski]

Bicycle disc brakes, some aluminum, 700w servo motor , you machine the pulleys and so, some belts. So basically the extra controller may be or you figure another way to do it.

I find that really an useful thing to have

[Chaz]

Bicycle disc brakes, some aluminum, 700w servo motor , you machine the pulleys and so, some belts. So basically the extra controller may be or you figure another way to do it.

I find that really an useful thing to have

Explain more please ..... I should be able to machine most of this - not sure about design and bearing selection, not an area I understand.

[Boyan Silyavski]

As far as i remember 7:1 ratio of a 700w servo motor. Hydraulic bicycle brake brakes and fixes at certain position when indexing. Bearings are fairly simple. They are so cheap now. Something like the rotating ball nut. A pair of oposing angular contact bearings with sufficient size. Thats it

[Boyan Silyavski]

Check his channel on you tube. There are 10 or so videos where he explains everything in detail https://www.youtube.com/user/Simpsons36/videos

[Chaz]

PRICING:

InTurn™ MEGA Duty 4th axis US$ 2,950

InTurn™ ULTRA Duty 4th axis

Sealed Ball bearing model US$ 3,795 (introductory price)

InTurn™ Ultra-T

Tapered Roller Bearing model US$ 4,995 (Introductory price)

InTurn™ Tail Stock II US$1,495