Manual-crank right-angle reduction gear box

[Kent A Bathurst]

OK - today's wacko idea:

I would like to come off my DP table's manual height adjustment crank's shaft into a (2:1 or 3:1 reduction?) right-angle gearbox, with a shaft running to a handwheel in front of the table.

I don't know what or where to search for gearbox components. McMaster-Carr has right-angle reduction boxes in the stratospheric price range (multiple $$hundreds). That's not what I want to do.

Youse guys are all pretty smart. ??????

Thanks
Kent

[Scott T Smith]

Try surpluscenter.com

[Bill LaPointe]

https://www.surpluscenter.com/item.a...-1462&catname=

[Roger Newby]

Yup...what they said...surplus center is just a few miles from me. Done a bunch of business with them over the years. Good caster selection if your building carts or machine stands.

[Wes Grass]

McMaster has miter gears, but only in 1:1 ratios. And you'd still be stuck with making a precision housing of some sort to hold them in the correct orientation. I've seen a right angle attachment for a drill used for a steering box on a pedal car. I'd think something like that would handle the torque requirement you have. But that's probably 1:1 too.


If you can stand having the crank on the side of the table, it'd be a lot easier to do with a chain or belt.

[Aaron Berk]

So what happens if you need to tilt the table?

[Brad Townsend]

Why bother with a crank or handwheel at all?

[Jerome Hanby]

Not sure how much force it would have to stand, but you can buy those right angle gizmos for power drills fir very little. Those are probably 1:1, but you could make your crank larger. maybe you could tear into one of those and adapt it...

[Kent A Bathurst]

So what happens if you need to tilt the table?

Then that would be the first time ever (12 years and counting).

[Kent A Bathurst]

I'm in - how do I do this? $$?

Why bother with a crank or handwheel at all?

[Kent A Bathurst]

McMaster has miter gears, but only in 1:1 ratios. And you'd still be stuck with making a precision housing of some sort to hold them in the correct orientation. I've seen a right angle attachment for a drill used for a steering box on a pedal car. I'd think something like that would handle the torque requirement you have. But that's probably 1:1 too.


If you can stand having the crank on the side of the table, it'd be a lot easier to do with a chain or belt.

Yeah - I saw that about McM-C. But - then I stumbled across worm gears - don't need a box - that was all I could think of at first. Worm gears come in a lot of different ratios - but they are all pretty high (low?) like 10:1 and up - I could live with that.

But, now you've got me thinking - with a sprocket on the adjustment shaft, then I could put another gear/sprocket out near the front and use a chain. The handwheel would not be parallel to the front of the table, but that's not an issue - it would still be easily accessible. Hmmmmmm.......

[george wilson]

Kent,VERY cool!!

[Graham Wintersgill]

Kent

Maybe you could take the motor of on of these http://www.amazon.com/UPG-86025-Automotive-Tire-Jack/dp/B000B8US6C/ref=sr_1_2?ie=UTF8&s=electronics&qid=1277229274&sr =8-2

You would need a 12v supply.

Regards

[Brad Townsend]

I'm in - how do I do this? $$?

About $40 for the motor:

http://www.surpluscenter.com/item.as...tname=electric

and probably another $15-20 for the switch, wire, etc.

I did a post on this in another forum. Since I'm not sure about the SMC policy about links to other forums, I am emailing you the link.

[Kent A Bathurst]

About $40 for the motor:

http://www.surpluscenter.com/item.as...tname=electric

and probably another $15-20 for the switch, wire, etc.

I did a post on this in another forum. Since I'm not sure about the SMC policy about links to other forums, I am emailing you the link.

Got it - thanks. You ever figure out a remote operation gizmo for the table lock?