DIYbanter - View Single Post

Lloyd E. Sponenburgh[_3_]

fired this volley in
:

I have an old Index mill that uses the same type of power drawbar.
Even though the splined ends are pointed they would sometimes not
engage the female spline proiperly and the impact wrench would just
spin while trying to knock off the points on the ends of the spline.
So I installed a switch in the common wire to the impact wrench that
would only close when the splines were mated properly. Since then the
power drawbar setup works very well.
Eric

Explain more about that, Eric. Does it simply detect the distance the
spines have engaged, or is there some sort of radial alignment detection?

Lloyd