Effect of Material Properties on Ultra Precise Cutting Processes

A study on initial contact detection for precision micro-mold and surface generation of vertical side walls in micromachining

“…The modulus of elasticity of aluminum is roughly one-third that of stainless steel, and thus plowing is more dominant at lower engagement of the cutting edge [5]. Therefore, the minimum surface roughness appears for all the depths of cut and plowing effect is significant at lower feeds.…”

“…Surface quality is another important factor because it affects the functional characteristics of the parts. The issue is that the surface quality generated by micromachining has to meet the requirements without further processing, since surface-finish processes like grinding or lapping are difficult to apply for features on the microscale [1,4,5].…”

Towards cutting force evaluation without cutting tests

“…It should be noted that the specific cutting force Kc can be calculated as a function of h from Equation (2) by dividing fv by h. The chosen cutting model is thus able to return the so-called "size effect" [17] for each material. The aim of the mechanical tests presented in Section 4 is to determine the possibility of finding mechanical data which can be directly linked to the cutting coefficient Ksv -which represents the specific energy of the shearing process during cutting.…”

Precision engineering center. 1988 Annual report, Volume VI

“…When cutting brittle germanium, the chip is not continuous and the cutting force did not remain constant. In the amorphous resin (PMMA) both the forces remained (CaF2) and Germanium, Furukawa (1988).…”