The Shop > Tools
A Tangential Toolholder for the Sherline
Bernd:
Good one guys. :lol:
Bernd:
Ok, finally got a clamp plate made for the tool holder and a clamp post to hold it down to the cross slide.
It works but I'm not happy with the finish it gives. Tried a few different cuts. Seems like about a .002" deep cut gives a good finish as apposed to a .020" deep cut. Leaves a rough surface as if you are working with a damaged tool. I need to investigate this further.
And I know that :worthless: so I've got a few pics.
Here I'm getting the hieght set using the tailstock center.
Here I've cut up to the chuck. I still have some clearence problems to take care of. I'm turning 3/8" square stock to make the next tool post bolt.
Finally got to the depth were there are no more square sides to cut. This is where I tested the deepth of cuts and the finish.
That's it for now. I have some more expermentation to do before the verdict will be in, but that won't be till after Cabin Fever. If I can get myself unfrozen by Friday. :)
Bernd
bogstandard:
Bernd,
If I could make a suggstion without offending.
Instead of using your tailstock centre to set tool height, use the ruler against the workpiece method, it should work out a little more accurate.
Tailstocks with centres in are renowned for not being very accurate, especially on these smaller machines. On larger machines, they sometimes have a setting mark on the tailstock ram, and if so I would use that, but not on the centre end unless it was fully cleaned down and bedded into the taper. Even a minute particle of something on the centre can knock it out of wack when stuck in the taper.
Bogs
Bernd:
John,
I can take constructive criticism, never hesitate to point out something to me. I can't keep track of everthing I've ever read about or learned.
That was just a quick and dirty setup. What I should make is a tool to set the center hieght. That will be next.
The method you suggested would be a bit tough to do on such small machine, though I guess I could use it to see if I had set the tool right.
Stay tuned for more developments in the making. But not till after Cabin Fever. :D
Bernd
Bernd:
John,
I did the ruler against the workpiece method just for curiousty. Here's the pic.
As you can see I'm a bit low with the tool. BTW That's a piece of .020" feeler stock I'm using. The scale didn't work do to the engraved numbers.
Question: I know it's important to try and get the cutting tool right dead center, but there must be some leeway. I would think that it also depends on the diameter of the piece you are cutting. The larger the diameter the less you need to be right dead center. The smaller the piece the closer you need to be on center. Is my thinking correct here? Also I was turning a piece of square stock so I couldn't use this method first.
I'm thinking of making a gage the will aid in the setting of the center hieght using the lathe itself to create the gage.
Bernd
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