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spinrow
02-08-2011, 10:30 PM
I'm getting older and the movable table on my bench top drill press is giving me problems when I have to move it up. I remember seeing car jacks used to elevate the table but this seemed complicated. I thought of using a lever mechanism with a curved pivot point but haven't got very far with that. Possibly a large spring attached overhead to assist? Anyone have an idea for a simple addition to help. Of course I could buy a new drill press with elevator but this press is an old friend. Thanks Paul

J. R. Williams
02-08-2011, 10:43 PM
I used to have an old Craftsman drill press and used a large vise. It was a pain to move the table due to the weight. I made a bracket to hold a 3" diameter pulley over the column and fitted the unit with a flexible steel cable attached to the table and to a large counter weight inside the column.
JRW

darryl
02-08-2011, 11:29 PM
I'm thinking that some kind of counterweight, cable and pulley system would work. If you don't normally swing the table far to either side, you can put a loop of cable around the collar that carries the table and rides the column. This gets the cable fastened without drilling for an anchor bolt. The cable would be between the column and the edge of the table, and would go up through the head and the sheet metal belt guard. You can drill holes for the cable without wrecking anything, and the cable can go upwards and over a pulley hanging from the ceiling. A second pulley at the ceiling can take the cable to anywhere a weight can hang without interfering with anything.

A snag might exist if your drill press has a two belt system and an intermediate idler pulley. If you can't go straight up through the head 1/2 inch in front of the column, then you could always just loop the cable under the table mount casting and run up outside the head on both sides. You might still be able to go through the bottom of the belt guard at both sides without interfering with a belt. In this case you'd need two pulleys at the ceiling to run the cable over, but after this the cables can combine before they run through the last pulley and down to the weight.

Actually, I think this would be easier since you wouldn't have to go through the head at all, just the belt guard, which probably overhangs either side of the head anyway. 1/16 inch steel cable is plenty strong enough for this. One snag to overcome would be dealing with the lid on the belt guard. Leave it off like I do- I hate the rattly things. Or add a pair of hinges to it so you can cut it in half and leave a gap between the halves where the cables come up.

Or- don't go up that high with your pulleys. There's an unused space on the column just under the head where you could mount a partial flange to- the flange carries the pulleys. The two cables would come down the side of the column near the back side, and the weight would hang below where it could be out of the way.

jack3140
02-08-2011, 11:47 PM
I'm getting older and the movable table on my bench top drill press is giving me problems when I have to move it up. I remember seeing car jacks used to elevate the table but this seemed complicated. I thought of using a lever mechanism with a curved pivot point but haven't got very far with that. Possibly a large spring attached overhead to assist? Anyone have an idea for a simple addition to help. Of course I could buy a new drill press with elevator but this press is an old friend. Thanks Paul
assuming your drill press is equipped with a crank to raise the table i installed a small reduction drive motor in place of the crank so i only need to selct up or down and press a button sure makes life easy if you want details email me jack

Nightshift
02-09-2011, 12:17 AM
I did the same as Jack with my 21" floor model drill press. Took the table crank handle off and added an angle drive motor and a momentary up/down toggle switch to energize the table motor. Works slick!

rbertalotto
02-09-2011, 07:25 AM
Two ways I've seen it done.............

Linear Electric Drive (Surpluscenter.com) depending on the weight of the table and the vise....

http://www.surpluscenter.com/images/p5-1703C.jpg

http://www.surpluscenter.com/item.asp?item=5-1703&catname=electric

OR

A worm gear hand winch.............

http://www.etrailer.com/Merchant2/graphics/00000001/pics/D/L/DL10950_tn.jpg

http://www.etrailer.com/Trailer-Winch/Dutton-Lainson/DL10950.html

A winch of this type will give you great control both up and down. Stop cranking and the load will stay put.

Nightshift
02-10-2011, 12:10 AM
I did the same as Jack with my 21" floor model drill press. Took the table crank handle off and added an angle drive motor and a momentary up/down toggle switch to energize the table motor. Works slick!
I found a couple pics I took of mine. Hope this helps to give you some ideas. Bill

1st is a pic of the table support collar removed to make a motor mount for the angle drive
http://www.corneil.com/nightshift/Machinery_Forum_Uploads/PowerTable1.jpg

Here it is put back together connecting the angle drive to the table elevation gear shaft with a sleeve
http://www.corneil.com/nightshift/Machinery_Forum_Uploads/PowerTable2.jpg

My original angle drive was not powerful enough to raise the table easily, so I made a new motor mount (and chip shield) for a more powerful drive. This one zips the table up easily with a heavy 6" drill press vice.
http://www.corneil.com/nightshift/Machinery_Forum_Uploads/PowerTable3.jpg

The switch for the light was on the side of the drill press, so I moved it to the front beside the power table up/down toggle.
http://www.corneil.com/nightshift/Machinery_Forum_Uploads/PowerTable4.jpg

Your Old Dog
02-10-2011, 08:06 AM
Night Shift, great post! What's the story on the motor and gear reduction unit? Where'd you score that from?

Nightshift
02-10-2011, 08:51 AM
The angle drives are ones I had kicking around for years on my motor shelf waiting for a new use. No idea what they were originally used for. But happy I finally gave one a new home. May put the other one on my smaller 17" drill press as it has a smaller (and lighter) round table so it should be able to easily run it up and down. Cheers, Bill