Hand crank right angle drive

[grunt58]

I need to design some adjustable guides that will move on a lead screw with a hand crank. The problem I have is I don't have enough room to come straight out of the lead screw with a hand wheel. I need it to be 90 deg from the lead screw. I can't seem to find a right angle drive for a hand wheel. All I find are for motors which I won't be anywhere near the rpm. Any suggestions on where to source?

 

[Nescius]

How about bevel gears?

 

[grunt58]

Yes I suppose that would work. I was hoping there would be an enclosed off the shelf solution like a electric motor right angle drive.

 

[drawoh]

grunt58,

Bevel gear boxes are out there. How about a low ratio worm drive?

--
JHG

 

[Nescius]

What are your objections to adapting a hand wheel to something that might not usually operate with one?

I am assuming a 1:1 gear ratio. Is this correct? How strong does this mechanism need to be? Are you lifting a truck or lifting a microscope stage?

 

[MadMango]

Worm gear.

"Art without engineering is dreaming; Engineering without art is calculating."

Have you read faq731-376 to make the best use of these Forums?

 

[grunt58]

Guess this is what I'm looking for.

 

[grunt58]

I'm not opposed to adapting I just couldn't find a gear box that wasn't expensive or made to mount to a motor. 1:1 ratio with same direction output. Its for centering a .080 thick sheet coil into the press right before the die. We haven't sized the rollers yet but on similar but much more heavy duty centering guide we have 2 osborn rollers per side with a radial load of 1620 lbs.

 

[Jboggs]

http://www.andymark.com/product-p/am-2622.htm

http://www.wmberg.com/products/assembly/gear-boxes

http://www.pic-design.com/gear-assemblies.html

McMaster.com Right-Angle Gear Boxes

 

[btrueblood]

Sounds like you might want one of these? Handwheel connected worm gear turning an acme nut?

http://www.screw-jack.com/mini-worm-gear-linear-actuator-with-hand-wheel.html

Same site has miter gear boxes, ie 1:1 ratio too.