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mad_pete

Linear actuator for drill press table lift

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Got a Elliott progress 1s pillar drill and it’s very nice but a powered table lift wouldn’t go  amiss. Looking at getting one or two actuators 65 Cm long with maybe 35 Cm extension to power it up and down. Anybody used these and can recommend where to get them ? I’m looking for £75 ish if possible. Also if anyone has suggestions on how to make a lift that’s welcome too.

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Mine has a rack and pinion to lift the table. The handle is on the back of the table with the rack through a slot in the table. The rack sits on a collar on the shaft without being fixed to it so that you can still rotate the table. Pretty standard on this sort of thing but I can take a photo if it would help.

I've seen them used for lifting TVs out of bed frames or car dash boards, might be worth searching with those criteria. Does seem quite elaborate to me though? Are you going to lock off before you drill? If not make sure it's man enough to take you pulling down with the drill.

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It's more a project than need. I would lock the table with existing clamp after moving it. 

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So this is it. Table is cast iron clamped on the (solid) metal column. 

 

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Have about 70mm to fit something underneath 

 

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think i I have to lift near the column to stop it binding . 

 

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couple of threads in the table I could maybe connect to.

 

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and my £1.04 ebay linear actuator is on its way.

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The thread on your 3rd photo down looks like it's on the bit of the table that pivots for drilling angles so I would avoid that bit. I wonder if that hole is supposed to have a spring pin in it to automatically register horizontal?

 

Bargain actuator though!

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This is a tidy lift set up, but I can't see whether you have a rack and pinion or not.

 

 

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Thanks I did see that but I don’t have a rack just the column. You can tilt the table and I might have to get close to that so it doesn’t bind on the lift.

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TBH I have an old Meddings like this, and I've not found the need for a lift mechanism.

 

image.png.40da66eb4ea9eb5fed9d9a552dc058fe.png

After more thought, I reckon one like this has enough weight in it to hold itself still when you lift the table. Bench mounted models are lighter and probably more inclined to move as you lift the table.

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So got my £1.04 actuator and dug out a 12v power supply and it seems good. Pleased with that.  Trying to think how to stop it pivoting on the lift.

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Possibly enlist axle stand help. However I did find an antique linear actuator mechism in the form of some Range Rover jack (I think).

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and that with a motor on top might go nicely. Maybe a collar on the shaft and weld the end of the jack to it with some feet coming forwards perhaps.

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Sweeeet :)

Are you putting a ring around the upright below the table? So it can still swing about?

the old trick was a pulley at the top and a counterweight down the back. Before folk started using springs, which I hate, because they break.

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Yes that’s what I’m thinking. I need something with 70 mm internal diameter. Exhaust pipe repair comes in 70mm but that might be od. Although spilting and bending it out slightly might not matter.

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