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.

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

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.

Generation of surface micro-topography in diamond turning;

The machining accuracy is always impacted by the thermal deformation of the cutting tools in the diamond turning of the large metallic mirrors.

Although many organizations have carried out some research in DOEs in this nation, fewer applications are found in the visible spectrum with single point diamond turning.