It worked for me, the position of the work was not expected, though. At first I thought it was cutting on a drill press.
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Speed & Feed?
- Thread starter Kroll
- Start date
Thanks, Tom. I tried to view the link on both my computers and it failed to load. Then I tried it on my phone and that worked.
Kroll, see how free machining steel cuts? It forms small chips, not strings.
Your work piece is really long. With the limited relief angle and large nose radius, the work can deflect. You will have better results if you work up close to the chuck. Try re-grinding your tool, get the work area closer to the chuck, and try taking a healthy depth of cut. I'm wondering if you have a work hardened layer that is causing the tool to skate.
Kroll, see how free machining steel cuts? It forms small chips, not strings.
Your work piece is really long. With the limited relief angle and large nose radius, the work can deflect. You will have better results if you work up close to the chuck. Try re-grinding your tool, get the work area closer to the chuck, and try taking a healthy depth of cut. I'm wondering if you have a work hardened layer that is causing the tool to skate.
Thanks guys glad there's a patient membership here.Not much of a computer person,I was glad that I was able to get video on here.But wish everyone was able to see it.Using my cell phone I was trying to get over on top so that could see the cutting tool cut from the top.After grinding little more I now have a smaller radius on the tip but compared to my carbide insert radius its still to big.I need to take my tool support off the grinder and smooth it out so that I can slide the tool back/forth its hanging up little.I need to fix my grinder right so that I can be more accurate at grinding.
Your radius should be less than 1/16" for general steel work. As mikey said, it will contribute to deflection and increased cutting force over a single point. I rarely grind a radius into a tool. I just break the corner on the grinder and work the radius by hand on a 600 grit diamond hone. Copying the radius on a carbide turning insert is the right idea.
Putting that radius on the tip made a world of difference,I just finish turning the .500 part of the shaft.The shaft is nice and smooth,still have another area to turn the turn the OD for both ends of the shaft which is 5/16 and 1/4.Na I'm not going to push my luck try threading on the lathe just going to use a die this time.