Analysis of Machining Mechanism in Diamond Turning of Germanium Lenses

Effect of Nose Radius on Surface Roughness of Diamond Turned Germanium Lenses

“…They concluded that surface quality was much better when a small nosed radius tool was employed. Pawase et al [2] also found out that low feed rate, low depth of cut, and sharp edge tool with a 0.75 mm nose radius and negative rake angle of -25° enabled machining in the ductile mode to generate a good optical surface. Furthermore, in Dogra et al [8] study, an increasing nose radius at reduced feed rates and higher cutting speed leads to an increase in surface finish.…”

“…Infrared optical lenses have gained more recognition recently in various industrial field applications such as thermal imaging, military usage, dark field optical instruments, and medical instruments [1]. The generation of infrared optics with the desired surface finish within nanometric range is a real challenge in manufacturing industries thus continuous studies are conducted to reduce the manufacturing cost, production time, and labour accuracy [2].…”

Characterisation of the Femtosecond Laser Micro-Grooving Process for Germanium Substrates

“…However, Ge is hard to be fabricated into required structures without process-induced damages. Although machining processes such as diamond tool micro-machining [1] and wire electrical discharge machining [2] have been used to machine Ge wafers, the process efficiency, machining quality and process-induced damages cannot meet the need of industry.…”

Micro e nanousinagem dos materiais frágeis

“…: avanço e profundidade de usinagem) e a geometria da ferramenta (e.g. : raio de ponta e ângulo de saída) têm sido pesquisadas (BLAKE; NAKASUJI et al, 1990;PAWASE et al, 2014). Integridade superficial também são aspectos de grande interesse.…”