Factors of Generating Surface Roughness in Cutting

抄録

As factors of generating roughness in cutting, first we consider the replica of the cutting edge roughness, and estimate clarity of the replica with multiple correlation coefficient between edge profile and generated profiles on a work after cutting. Next we consider the after-effect of the surface roughness of works before cutting, and estimate the degree of after-effect with singular correlation coefficient between the initial and refinished profiles. Both the replica and the after-effect depend on the properties of materials and cutting conditions, but the after-effect can no longer be recognized after the feather cutting. Lastly abnormal roughness, which is generated by disturbance of built-up edge, is estimated with partial correlation coefficient, and auto-generated roughness, which is caused by the non-uniformity of grain size and hardness of materials, is estimated with auto-correlation coefficient. These abnormal and auto-generated roughnesses also depend on both the properties of materials and cutting conditions, but the latter may be found only in the case of fine cutting.