Re: [CAD_CAM_EDM_DRO] Re: flexible couplings for PCB router - coupling

Alan Marconett wrote:

>HI Fred,
>
>That's what I thought. How do you make a helical SAW cut? Just a simple
>shallow angle for the blade? The blade probably wouldn't like it. Hard
>enough to make a simple clean cut and worry about killing the blade!
>
>
>

The SAW isn't helical, the slot is (approximately). Maybe you know that.
The blade runs on the axis of the spindle. The piece of aluminum (or other)
bar stock is passed across it at an angle, and "screwed" through the blade.
If you did this with a shallow cut, it would look like you were cutting
a thread.

It would at least be theoretically possible to do this with a drill
motor set up
on an angle on a lathe toolpost. You would set up the lathe with the
leadscrew
engaged but the spindle stopped, start the motor spinning the saw, drive
the saw
in with the crossfeed, and then advance the lathe spindle at an
extremely slow rate,
making the cut. At the end, you could stop the lathe spindle and
withdraw the
saw with the crossfeed.

Jon