Near-surface mechanical properties of KDP crystals in single point diamond turning;

The development process of diamond cutting was reviewed.

Modern ultraprecision machining technologies essential for formation of ultraprecision optical surfaces on optical crystal,optical glass and other brittle materials, such as ultraprecision lapping, ultraprecision lapping,ultraprecision polishing,ultraprecision grinding, ultraprecision cutting,and ultraprecision diamond cutting of brittle materials in particular, are discussed in detail.

Forecasting and experimental research of surface roughness in single point diamond turning for KDP crystal;

The technology of single point diamond turning(SPDT) is a new technique widely used in the world since 1980’s, it is very useful for ultra precision machining.

Mechanisms of surface micro-topography generation in single point diamond turning is analyzed,and a surface micro-topography model based on cutting geometry with a round nose tool is proposed,the influence of some factors such as spindle speed,feed,tool nose radius and vibration on surface roughness is analyzed.