Clausing 8520/8530 Tramming

I've often wondered why none of the knee mills that I've ever seen have something like a light duty worm and pinion arrangement for that task.
 
I've been waiting with baited breath for someone to show the setup of the G0704... I've googled it but haven't found a great picture with detail.

I'm also real curious about the nylon piece, the master for zero, hopefully Billy G sees this and can explain..

I also have a piece of aluminum to build a tram, need to get a couple indicators and then.... of course... make some time!
 
I finally did copy Bill G's tram tool. After some "practice" in using it, I can dial in the head to a half thou pretty easily and have confidence that it's now "right".
 
The nylon master is simply a 1 1/4 OD, 1 1/2 long with a 3/4 hole in it with a flat bottom 1 deep. with the master held against the bottom of the bar move both gages back in the mount and push them down till you get 1/2 revolution of the needle. Do that to both gages and they are zeroed, tighten the set screw and you are done zeroing the tramming tool.

The most difficult part of making the tool is pressing the shaft absolutely straight into the bar. Final accuracy demands it.

"Billy G"
 
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.......The most difficult part of making the tool is pressing the shaft absolutely straight into the bar. Final accuracy demands it.

"Billy G"

How did you accomplish this, use an end miil and ream, then press? Use a 4 jaw on the lathe, drill/ream/press? Just thought of something; since its a small piece of flat stock heat it with a heat gun, end mill when still hot, when cool it shrinks for a good press fit without reaming, thoughts?

thanks, Brian
 
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I used a undersized reamer in the drill press and then bored to final size on the lathe with a 4 jaw.
If I had the correct size reamer, I could've skipped the final boring.
 
Did mine the same as 34_40 Brian.

"Bi;;y G"
 
One other thing to note about pressing the shaft if it ends up a tiny bit crooked: You can always chuck up the shaft in the lathe, then take a skim cut on the bottom of the bar to make it square with the shaft. Of course this assumes that you have a good chuck on your lathe so that the shaft is running straight and true.
 
I wanted to revive this real quick. I have an 8530 that i will be tramming tmr. I was curious if that if you are off a little in the Y plane of the plane how do you adjust the tilt? I obviously know how to adjust the X with the tilt of the head.
 
I think the only way to adjust the Y-axis tram is to shim between the over-arm plate and the base.
 
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