Re: Automatic boring head?

---The ring is used for facing. The hole is bored in the usual way and
when the correct dia is reached a stop is set on the body of the
boring head. the cutter is then screwed back to the start and set at
the bottom of the hole. with the spindle running the ring is held and
the cutter feeds out until it reaches the stop. This gives a smooth
finish to the bottom of a hole which is sometimes required.
Making an educated guess is not really fair on the guy that asked the
question.
Terry

In CAD_CAM_EDM_DRO@y..., jmelson <jmelson@a...> wrote:

> Tim Goldstein wrote:
>
> > OK, I have seen this item listed in catalogs and still don't

understand why

> > I would want one, when it would be used, if it can work like a

standard

> > boring head, or how I would make it work automatically.
>
> These have a ring that you grab momentarily, and a ratchet pawl

advances the

> diameter leadscrew to cut the next boring pass or diameter of the

facing

> cut. This way you don't have to stop the spindle to turn the screw.
>
> With CNC, it is less of a big deal, as the facing can be done with

an arc,

> and the rough boring can be done 100 x faster with an arc, and the

final

> boring can be done in one pass, often without resetting the boring

head

> once it is set to the desired diameter.
>
> I have no need for it now.
>
> Jon