Re: Survey: Do You Leave a Toolholder in the Spindle Overnight?

Cliff wrote:
>
> On Thu, 18 Aug 2005 20:41:01 GMT, BottleBob <bottlbob@xxxxxxxxxxxxx>
> wrote:
>
> >BTW, I personally don't like single point boring in the CNC's and tend
> >to circular interpolate end-mill bore
>
> Looks like that's far less accurate if you want anything
> actually round .....


Cliff:

That would depend on how "round" the hole NEEDS to be, now wouldn't
it.

I'm sure most everyone is aware of the following drawbacks of single
point boring compared to interpolating or plunging; possible chatter
and poor finish, non sharp base corner due to insert radius, insert wear
and the resultant dimensional change, setup time to dial the bore
dimension in, often higher cycle times than interpolation or plunging.
Having said all that, sometimes single point boring is the only
reasonable process to use.

--
BottleBob
http://home.earthlink.net/~bottlbob
.