Threaded rod drive

[TC Robertson]

I anyone familar with the drive mech. in a self feedind diamond saw? A split nut with springs and a squeeze handle to release it from the threaded rod.
I have a project that I need that kind of slowish, even movement.

I don't know what to look under to find these things. I may deconstuct the one on our saw and build it. They are not common, but should be available. Thanx Later, TC :rolleyes:

[Rich Federici]

Sounds like parts from a metal lathe, like the lead screw and half nut.

[Ted Trower]

Sometimes referred to as a worm gear.

[Jon Myers]

Search ball screws. Maybe someone else knows of something cheaper? Jordan

[Victor Chiarizia]

tc, check out surplus center in omaha. you may want a servo drive. i have one on my production wood sander. veriable speed down to nothing with the right gearing. or you could automate it....check out hobby cnc links. way cool stuff out there. started a 3 axis router project that got side tracked along time ago. pc controlled...the works. still have your chest cavity on my shelf old friend:<) vic

[Dave Bross]

The name of that sort of thread is an Acme thread.....yup, just like in Wiley Coyote and Roadrunner.

[Rollin Karg]

TC, this is the company we buy the parts from for our Highland park slab saw. They have what you want or at least they did the last time we ordered which was several years ago.

http://www.diamondpacific.com/

Good luck
Rollin

[Brian Blanthorn]

The " correct" type of thread 4 this is called a lead screw it tends 2 push allong rather than force up

The thread is square edged rather than angled as on normal thread

On my Sally Saw I used the normal thread and works OK with a 1/2 nut only as the pusher u not need a "full" nut

If handles a lot of friction + wt Ok

I have had about 30 k on it the lifting force is minimal

There is a tread here + pics

Its using a wheel chair motor

U must align thread carefully mine is all stainless

Brian