I am wondering if any of you have ever seen a R/C hand drill. The idea
is to use small servos that would push the trigger of a hand drill as
well as make it go back and forth. Has anybody ever seen something like
this on the web. Either it has never been done and reported on the web
or I am using the wrong keywords on google.
Thanks in advance,
IF you are limiting yourself to only hand drills, the answer is NO.
By definition they were not meant to be automated.
IF you are talking about
a) on/off power for a drill
b) push/retract for drill pressure,
these two actions are what CNC (Computer-Numerical-Controlled)
drills are all about, although these are usually floor-standing
Also, assuming that you have a clamping setup to hold the drill,
servo-controlled actuators could be attached to that mount
that would interact mechanically with the drill to imitate your
finger action. Furthermore, the mount itself would need to be
on a slider of some kind to make it move forward.
A company called something like Stock Drive Parts ...
has a catalog (free) of all sorts of small precision parts that would
work in conjuction with the servos or actuators you would need.
N.B. I strongly recommend you get their catalog before
doing anything or even going thru their web site.
You are likely to find everything that you want from a supplier
like FESTO who specialize in automation equipment (usually
pneumatic) for doing what you want. Naturally this is industrial
grade versus hobby grade, but if you are trying to build something
to throw into the "Robot Wars" ring, then FESTO or someone like
them is where you'll find some of what you need.
Some relevant reading on (servo-actuated drilling):
Umm.. it sounds like you really want a speed controller with reverse. You
are mostly on your own when you get into Rube Goldberg land,
http://www.rubegoldberg.com/html/gallery.htm , as it seems like that is
where you are headed here ;)
Over and out.
The below link shows one way to have a servo operate a switch,
which could be easier than pushing a button with the servo. You
can tie the button down and turn it on and off by placing two
wires on opposite sides of a thin piece of cardboard, and placing
this between the battery tip and the battery holder contact.
Have fun with the rotary switch newbie. You should be made aware that for
about the same amount of money and effort and 1/100 the weight you could put
together a solid state switch, here are some examples (there are lots more):
and here is a real cheap one:
This uses a 4001 quad NOR (<$0.40) for an oscillator and a latch. Hook up a
mosfet for a few bucks and it will handle a load, and be solid state
He has told you whats it for:
Agreed for the RC flying. This is not a brainstorming technique,
rather, I am trying to see why this ability to automate a relatively
powerful but cheap piece of equipment has not been more used by
I am actually thinking of several different project, at least two of
them use powerful rotating motors and do not need to run for hours.
The first one is indeed a battle bot of some kind. The second is a
robot that would climb on walls or cliffs (the hand drill serves at the
feet of the robot.) Both of these, I think require, a cheap way to do
drilling. Since I am on the cheap, I see this hand drill solution as
I am curious how you will achieve the rock-face drilling.
- drilling in rock (like concrete) takes a lot of pressure
- rock drilling is best achieved (not only way) when using
water/air as lubricant for cooling and chip removal
from the hole to prevent clogging and overheat
I am sure that you don't want to reveal what may become
a trade secret (keeping a grip on the wall while drilling)
but assuming that you are dealing with
- 6 legs ( 2 move forward at a time into new holes)
- 2 drills for punching a set of holes at the same time
(to prevent advancing at a complete crawl)
I recommend expanding pins on the legs themselves rather
than drills. This way, they insert loose, then can be
clamped(expanded) or released for holding or moving on.
This would allow you to invest in better equipment and drills
for the 2 drills, but it would add extra weight.
If you use only drills for the hole drilling, and you leave them
in the hole during a manoeuvre (move other legs), you face
the danger of cooling of the rock-wall clamping on your
VERY NOVEL idea to pursue ! I love it because I can
imagine many applications that I don't want to mention here.
Good Luck !
I think I figured it out !
It's an underwater mining exploration rig !
He wants to drill into the chasm walls,
- where veins of readily-available minerals are exposed, and
- where currents are erratic.
=> can't use a tether for wireline control from a sub that is
bouncing around in the eddy currents.
Alright, I admit that it's a stretch ... but WE will never know
until it shows up in Popular Science :-))
See, that's what I like about Newsgroups. Just when things are getting
boring, you get a great post like this one. Someone has an ever so sligtly
misguided idea about using power drills as motive force for some robot
thing, and another guy comes out of no where, grabs the ball and is suddenly
seen sprinting off in a completely unrelated direction for the "rock face
drilling" goal line. Brilliant!
Yeah, it's kind of like the old practice that we all used to share many,
many years ago. You know the one. It happened when we all stood around on a
street corner and talked to one another. I think it was called conversation.
That was the manufacturing troubleshooter in me crawling out of the
cocoon hoping that the emerging creature was beautiful.
Did you feel the urge to jump into the sub and go undersea mining ?
He's a terrorist and he wants to build a remote-controlled drill to
threaten airline passengers while he hijacks the plane and crashes it
into the World Trade Center...
For crying out loud, WHO CARES? He wants to run a drill with servos.
Let him be creative. Maybe he'll invent something useful and
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