Re: [CAD_CAM_EDM_DRO] turret tool post for lathe

digitaldesk2000 wrote:

>
> Hello,
>
> any body there with a simple turret tool post attachment for lathe
> with atleast 6 tools. kindly share the concept.
>
> regards
> ahmed

I haven't built one, but I have one on my 16 tool 40 position
2HP 10*36 1984 Denford cnc lathe. 8 axial tools and 8 radial tools for
a total of 16 tools (unlikely you could load all 16 positions
simultaneously). Mounted like a plate on the cross-slide,
perpendicular to the lathe Z (spindle) axis.

I was wondering about the 40 position specification I had on
the spec sheet (I don't have the machine running yet), but I
read somewhere that there is a 40 tooth spring loaded ratchet
inside, allowing the turret to turn in only one direction.

Presumably, on a tool change, the stepper rotates the turret
(always the same direction) by some amount, and when in position
for the requested tool, the stepper reverses and jams the ratchet
into and against the current tooth (thus locking it rigidly and
repeatably into position).

Simple and neat, but not time optimal as you can't move the shortest
direction to the next tool, you always have to turn the same direction
when changing tools. But good enough!

Probably this could be duplicated without too much experimentation....

Doug Fortune
http://www.cncKITS.com

















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