Grinding lathe bits

[gitmkr]

Thanks to all !! and thanks John I feel kind of stupid that it was as simple as using a stone and slowing things down.
I did some test cuts and I was still getting a smooth cut taking .020.
I'm working on a different tool holder , I post pics when I get brave enough.
Rick

 

[jworman]

I've been following this thread from the beginning.

And you state: "I can sharpen them to a point and get good cutting results but the resulting finish is not as good as i would like, it leaves a "phonograph groove type of end result.".

And in another statement you give the feed rate as .023 per revolution.

To me .023 per rev a roughing cut and the phonograph result is normal.
The picture looks normal,if not perfect.
If you want to reduce the size of the tool marks,try a .002 feed rate.

I noticed the .023 per rev and another place a .050 depth of cut. Wow! That is a lot more than I thought a 6" Atlas capable of. I had a 10" Atlas for many years and I didn't push it that hard. I have a 12" Clausing now and I haven't tried that much of a cut. I'm still very new on the Clausing.

I've been looking and learning about grinding tools. I have one of the HF wet tool grinders (Item # 46727) that does a really smooth job on HSS tools, but it's very slow cutting. I think the wheels that come with it are for carbide, although HF says is good for HSS. I don't know if the HF machine takes a standard tool grinding wheel or not. If it does, it will be a first for them. I did plumb a water supply and drain to the grinder as it seemed like I was filling the little water pot all the time.






I've been roughing the cutting tools with a regular grinder and finishing with the HF. So far, the finish has been pretty good.

 

[gitmkr]

I apologize for beating this thread to death. I really don't know much about a lot of this stuff and as my mother used to say when I was younger, "Richard get away from that wheelbarrow, you know you don't know anything about machinery !"
I was wrong about the carriage speed it is .0023 but I can turn the tool .050 into the workpiece and get a reasonably good cut without the lathe bogging down in hot rolled steel. Maybe that's too much. anyway thanks for your advise and patience.
Rick

 

[jworman]

I apologize for beating this thread to death. I really don't know much about a lot of this stuff and as my mother used to say when I was younger, "Richard get away from that wheelbarrow, you know you don't know anything about machinery !"
I was wrong about the carriage speed it is .0023 but I can turn the tool .050 into the workpiece and get a reasonably good cut without the lathe bogging down in hot rolled steel. Maybe that's too much. anyway thanks for your advise and patience.
Rick

I don't think you are beating the thread to death. More information is always good. I thought that was one heck of a cut and you must be making mucho blue chips. I'll bet the chips are plenty warm as it is.

I had a cutting tool where the front was round as a circle that another fellow made when he owned the 10" Atlas that I recently sold. It gave a very nice finish. I used it often if I didn't need a square shoulder. I found a similar tool, although a bit larger, when I got my Clausing. It doesn't give nearly as nice a finish, even going in just a few thousandths. They look very similar to me.

It seems like some days chicken soup; some days chicken poop.