Re: The Cole Drill gloat

On Tue, 19 May 2009 02:28:17 -0400, "Wild_Bill"
<wb_wildbill@xxxxxxxxxxxxxx> wrote:

I'm not sure what your question means, but the spindle doesn't just thread
down into the workpiece as the crank is turned.
Instead, there is a separate threaded section referred to as the Pressure
Screw (a hollow part around the spindle topped with a hex head) that the
user can turn at will for down feed pressure, as the crank is being turned.
The Pressure Screw imparts the down feed pressure to the spindle thru a
thrust bearing (according to a description from Lautard's old webpage).

For drilling deep holes, since the pressure screw will reach the limit of
it's descending travel, the user would need to stop drilling, back out the
pressure screw, lower the upper section to a lower position on the column,
then resume feeding and drilling again.

In the Cole Drill brochure (listed as Cole Drill Instructions on the Rusty
Iron site www.rustyiron.com) the specifications for the pressure screw are
stated as: 2 inch feed and a 10 pitch thread.


Damn..Ive never seen one before. Now Im going to start looking for one.
Seems like I could do a bunch of things with it.

Or build one from scratch with an electric drill in it.

Gunner

"Lenin called them "useful idiots," those people living in
liberal democracies who by giving moral and material support
to a totalitarian ideology in effect were braiding the rope that
would hang them. Why people who enjoyed freedom and prosperity worked
passionately to destroy both is a fascinating question, one still with us
today. Now the useful idiots can be found in the chorus of appeasement,
reflexive anti-Americanism, and sentimental idealism trying to inhibit
the necessary responses to another freedom-hating ideology, radical Islam"

Bruce C. Thornton, a professor of Classics at American University of Cal State Fresno
.

Relevant Pages

  • Re: Gaggia G 106..reduce boiler settings
    ... The temperature is controlled by a pressure stat. ... There is a screw under the drip tray. ... Turn the adjustment screw counter-clockwise to ... reduce the boiler pressure and temperature. ...
    (alt.coffee)
  • Re: need to create 0 to 30 pounds linear force
    ... you take a normal fuel pressure regulator, ... i thought about using a normal rotary motor but it seemed like it ... Attach a gear to the screw. ... Drive the screw gear with a small DC ...
    (sci.electronics.design)
  • Re: need to create 0 to 30 pounds linear force
    ... and spring valve where the spring sets the pressure ... motor would need and it might need to be geared down, ... Attach a gear to the screw. ... that it was before i sawed open the regulator... ...
    (sci.electronics.design)
  • Re: OPV retrofit help
    ... It has a diagram and explanation, the lock nut is the inner nut: ... To adjust the water pump pressure, ... i.e. screw it in to increase pressure or screw it out to decrease ... Take care to screw the connector fitting either in or out by ...
    (alt.coffee)
  • Re: Thanks for Patent help.
    ... pressure to be exhausted. ... compression chamber also changes size, ... The only bearings are where the crank is at the cylinder. ... Geared output for drive. ...
    (misc.rural)
Loading