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Registered Member #3781
Joined: Sat Mar 26 2011, 02:25AM
Location:
Posts: 701
I have an old drill press but it only has one speed. I was wondering if I can replace the light switch with a light dimmer to make a it a drill press with a variable speed adjuster?
Registered Member #205
Joined: Sat Feb 18 2006, 11:59AM
Location: Skørping, Denmark
Posts: 741
Camp Badger wrote ...
OMG that drill press is absolutely squee. Get a small Variable Frequency Drive for it, and scrape off the paint on the machined part of the column, so you can slide the table up and down....Finish it with 120grit emery cloth.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Squee, indeed.
A regular lamp dimmer would probably explode. There is a device called a ceiling fan speed controller that might be more promising.
But the best (and most expensive) solution is replace the motor with a 3-phase one and use a variable frequency drive. Just controlling the voltage doesn't work that well with an induction motor.
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
The usual method of changing the drilling speed on pillar drills of this vintage is by altering the diameter of the drive pulleys, which are often stacked one above the other on the spindle.
Registered Member #3610
Joined: Thu Jan 13 2011, 03:29AM
Location: Seattle, WA
Posts: 506
It depends on the type of motor, if it has a separate start winding then you can't easily control the speed. You can usually hear the click of the starting switch closing again as the motor coasts down after you switch it off.
I got a cute little VFD and a 1/3HP 3 phase motor I intend to mount on my little drill press to get rid of the annoying stepped pulley system. A vintage machine like that I would be tempted to just leave it as is, unless you can find a vintage 3 phase motor.
Registered Member #3781
Joined: Sat Mar 26 2011, 02:25AM
Location:
Posts: 701
Alright, I will look around, otherwise i'll just leave it as is, I believe everything's original except the power cord which I replaced yesterday :) It runs well though
EDIT: i'm looking to sell it if someone wants to make an offer haha
Registered Member #2028
Joined: Mon Mar 16 2009, 08:13PM
Location: Norway
Posts: 319
The real gold strike would be if you found a scrapped threadmill, they have all the parts you need for such a project. Their motors are somewhat powerful too.
Registered Member #3781
Joined: Sat Mar 26 2011, 02:25AM
Location:
Posts: 701
Renesis wrote ...
The real gold strike would be if you found a scrapped threadmill, they have all the parts you need for such a project. Their motors are somewhat powerful too.
ah if you meant treadmill, then yes, i have some parts, including the motor. Although i am not sure the motor works as well as it should, it seemed to not be going as fast as it should when I took it apart, like it's worn out.
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Variable Speed for Drill Press
