Re: [CAD_CAM_EDM_DRO] CNC lathe designs

Hi Carlos,

there are several common CNC lathe configurations and many
more not so common ones

on a slant bed lathe the X axis is rotated over the top so that its at
an angle (~45deg) away from the operator on the back side
the tool turret mounted on the X slide can be inline with the
spindle bore or at an angle to it for clearance the turning tools
are 'upside down' to the user
this gives an open 'well' for the chips to fall into
they can have a tailstock or not ,if they do its usually hydraulic
and will advance/retract with an M-code (no axis name)
some also have a seperate tool slide in place of the tailstock
that does have axis names (Y3,Z3 on the one at work)

for a 4 axis lathe the axis names are usualy X1,Z1,X2,Z2 or XA,ZA,XB,ZB
the U,V,W names are only used on mills from what I've seen

the tool turret is used just like a mill tool changer with M06 so
no axis name for it is needed

you could also use a gang tool slide (X,Z)and change tools by tweaking the
work offset code into tool change codes
or a vertical gang slide with Y offsets for the tool center hight (also lets
you use live tools for milling off centerline)

Brian

On Monday 09 April 2001 11:26, you wrote:
> To all –
>
> Can anyone please explain to me the common layouts for CNC lathes,
> regarding tool turrets, toolholders, etc.? I was thinking of CNC’ing a
> lathe, and was wondering about the use of a tailstock in a CNC application.
> Do CNC lathes come with tailstocks?? The ones I’ve seen didn’t, but had a
> tool turret instead. Would this be considered the tailstock then? I was
> trying to figure out how to setup the controller/axes, and I imagine the
> tool turret would require a third axis. What would this be called (U,V,W,
> etc.)?
>
> Thanks in advance,
>
> Carlos Guillermo
> VERVE Engineering & Design