My dad has had a little Kearns S-type Horizontal Boring Machine for pretty much as long as I can remember (so call it 50 years)
It is the facing-chuck model. You can twirl a handle at the back and the radial position of the tool slide changes. (And there is a power-feed for this axis too).
I have never quite worked out the mechanism that achieves this motion. Has anyone ever seen a picture or diagram?
It isn't the same as the stroke adjust on a shaper, as on a shaper the adjusting handle rotates when the machine is operating. On the Kearns the adjusting wheel is stationary except when the radius is being adjusted.
It is the facing-chuck model. You can twirl a handle at the back and the radial position of the tool slide changes. (And there is a power-feed for this axis too).
I have never quite worked out the mechanism that achieves this motion. Has anyone ever seen a picture or diagram?
It isn't the same as the stroke adjust on a shaper, as on a shaper the adjusting handle rotates when the machine is operating. On the Kearns the adjusting wheel is stationary except when the radius is being adjusted.