Observations of chip producing behavior in ultra-precision diamond machining and study on mirror-like surface generating mechanism.

Tool nose radius effects on finish hard turning

“…Specific cutting energy decreases with increasing of feed rate, while increases with nose radius proportionally. Uncut chip area in finish turning is related to feed rate, depth of cut, and tool nose radius by the following equation [11]:…”

Performance of single crystal diamond tools in ductile mode cutting of silicon

“…The machining conditions here are selected in such a way so as to confirm that the cutting edge radius is sufficiently larger than the maximum undeformed chip thickness [11]. In ductile mode cutting of silicon work material, this criterion is an important parameter to attain sufficient hydrostatic pressure beneath the tool cutting edge, thus, enabling plastic deformation in silicon work material.…”

3D cutting force analysis in worn-tool finish hard turning

“…The chip formation forces in finish hard turning are modelled by a mechanistic approach. In finish cutting, the uncut chip area (A c ), the cutting edge Contact Length (CL), and the uncut chip thickness (h θ , a variable) across the cutting edge can be analysed and all related to process parameters and the tool nose radius (Asai and Kobayashi, 1990). As illustrated in Figure 1, the uncut chip area is considered as numerous thin slices, each with the dimensions of different uncut chip thickness (h θ ) and an infinitesimally small width (rδθ ), where r is the tool nose radius.…”