Worm building procedure

recoilless · Oct 27, 2006

I have a myford lathe with a MT2 tailstock...Just kidding.

Actually I'm mulling over the procedure of machining a new worm for powerfeed on lathe. It's about 3" in length 6 tpi LH thread with approx. .800" bore. Am I assuming correctly that I should cut threads and shoulders to size first and then drill/bore out the bore second? I'm pretty confident that is right but I'll stand corrected if anyone shows me differently. Thanks

dsergison · Oct 27, 2006

so, a drive shaft slides through the worm and has a key? or what? and your gear is ok?

hard to tell from your description.

I think I'd start with a boring and keying the part and cut the threads on it. just me.

willbird · Oct 27, 2006

I agree, I think I might put it on an arbor to machine, thus you can take it out of the lathe, and set it in the wormwheel and measure the center distance, and put it back in the lathe and re-cut until you have the size just where you want it.

Bill

recoilless · Oct 30, 2006

Gear is brand new and worm is keyed to take drive from spline on lead screw. I thought about using an arbor over the weekend after I posted on Fri. Thanks for responses

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