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Thread Tools Show Printable Version. Surface finish on a lathe? I machine quite a few different materials and up until recently I have been able to make multiple parts and experiment with speeds and feeds. Now I am given a piece of cold roll pre heat treat is what they call it but I believe it is in the family and I am expected to make one part with one piece of material. Most of the time its plus or minus two or three tenths.
I am struggling with surface finish. Is there any combination of RPM mixed with feedrate and depth of cut to produce the best finish. I was under the impression that high RPM and slower feed equals a better finish.
Any feed back is appreciated. Don't take this the wrong way, but with a question like this, I'm assuming your experience on a lathe is not real lengthy? If yes, then the first thing I would do is buy yourself another piece of material or two to practice on to achieve the finish you need. What type of finish are you after? Slower feeds give a smoother finish, but only to a point, and then it will get bad again. Where that sweet spot is, depends too much on inserts style, coatings, chip breakers, and other things, to give a general answer to this question.
Your best bet is to talk to a tooling rep for what ever brand insert you're using, and tell them what you're trying to achieve. This almost needs to be a "hands on" type of guidance. Its stringy and usually Muista!
- Paleface - Muista! (Lathe Cut) even with speed. The machine you use may also affect finish by the way. You may think about a finish cut higher rpm and med feed. I actually use a modified debur wheel at 10, on a hand held grinder after grit. My finish is near mirror for a seal surface. The first step would be to figure out exactly what material you're cutting in order to determine the proper surface speed at which to machine it.
That Muista! - Paleface - Muista! (Lathe Cut), the most common reason for lousy surface finish is insufficient depth of cut. Feedrate can range between 0. In contrast, finishing soft, gummy materials like require surface speeds of SFM. Combine a holder and carbide insert to perform cutoff and grooving tasks on a lathe. Pair these holders with a tool block for right- and left-hand mounting in a lathe.
Fit these holders directly into a lathe tool post or appropriately sized holder without the need for a tool block. Cut square corner grooves in a workpiece or cut completely through a part. Also known as parting blades, use these to separate a finished part from the workpiece. A thinner cutting edge and thicker top edge give these blades a T-shape profile that moves chips away from the cut and reduces friction for fast cutting. The carbide tip brazed onto these blades is more wear resistant than high-speed steel.
A carbide tip brazed onto a ground steel shank makes these tools more wear resistant than high-speed steel tools. Place a cutoff blade into one of Muista! - Paleface - Muista! (Lathe Cut) holders to keep it in place Muista!
- Paleface - Muista! (Lathe Cut) the lathe. Contact Us Order. Log in, Muista! - Paleface - Muista! (Lathe Cut). Create login. Search Results. Cut Type. For Use On. Cut Direction. Groove Width. Shank Height. Shank Width. End Shape. Maximum Depth of Cut.
Material Grade. Overall Length. Overall Height. For Insert Thickness. Shank Type.
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