Re: I am looking for Lathe Cutting tool parameters for CNC

--- In CAD_CAM_EDM_DRO@yahoogroups.com, glee@i... wrote:

>
> David wrote:
>
> > By the way I highly reccomend that you consider tooling that uses
> > inserts. On a lathe these can be very economical and the data

you

> > need is easly obtained. Inserts are less that $4 a piece, on a
> > triangular insert that is three cutting surfaces for a buck and

change

> each.
>
> Thanks, Dave.
>
> I believe that when you go this route, you are committing to a

particular

> family of inserts.
>
> Do you have any favorite recommendations for insert tooling for a

small CNC

> lathe like a Sherline that uses 1/4" square shank tools?
>
> Thaks,
>
> Eric

Eric,

The problem that you will have is that small machines like my Denford
ORAC and your Sherline don't have the power to run negative rake
inserts - and as most of industry is using negative rake tooling you
have a significantly reduced selection in positive rake. There are
some negative rake inserts that have a chip breaker groove that
presents a 'quasi positive' rake angle - maybe that's the sort of
thing that you should look for.

No point in my suggesting suppliers to you as you are the wrong side
of the big pond !

Andrew Mawson
Bromley, Kent, UK