We should know that the material and the cutting tool structure and set parameters, which are the basic elements of hard turning. When selecting these materials, the tool structure and geometric parameters are very important.
If according to the intensity of the tool to divide, different blade shape of the strength of the tool tip is different, such as like round, square or triangle, they insert material in selected later, it should choose high strength blade shape. And the introduction is the three blade shape, the only circular blade strength is the highest. And hard turning blade should be selected larger the knifepoint radius, using circular and sword sharp radius blade to rough machining, and in finishing, the nose radius of about 0.8 micron.
Is there will be no built-up edge of the hardened steel chip is red and melted ribbon, brittle, also is easy to be broken, not adhesive, but the tool surface have very high quality. Because the cutting force is very large, especially the radial cutting force is much larger than the main cutting force. Generally used negative rake angle and relatively large angle. And the main angle mainly lies in the stiffness of the machine tool, so will the angle of 45 to 60 degrees, in order to reduce the chatter of workpiece and cutting tool.
And the selection of cutting parameters, generally speaking, the hardness of the workpiece material is high, their cutting speed is very small. That is to say, when the workpiece is very thick, I believe in cutting, the speed is very slow. It's not possible to cut it right away. After all, the hardness is there?
Therefore, I believe that we have a hardware tool, the super hard tool to understand, but also know how to pick these tools, to better use.