What are the characteristics of precision parts processing?

2024-11-12 10:10:48

1. precision parts cutting

Mainly precision turning, mirror grinding and grinding. Micro-turning is carried out on precision lathes with ground single crystal diamond turning tools with a cutting thickness of only about 1 micron. It is often used to process precision and smooth appearance parts such as spherical, aspherical and planar mirrors of non-ferrous metal materials. For example, the processing of nuclear fusion devices with a diameter of 800mm aspheric mirror, accuracy of up to 0.1 microns, the surface roughness of Rz0.05 microns.

2. precision parts processing

When the machining accuracy of precision parts is nanometer and atomic unit (atomic lattice distance is 0.1~0.2 nm) is taken as the target, the machining method of ultra-precision parts cannot be adapted. It is necessary to make use of the machining method of precision parts, that is, the application of chemical energy, electrochemical energy, thermal energy or electrical energy, etc., to make these energies exceed the joint energy between atoms, thus removing the adhesion, union or lattice deformation between some atoms on the surface of the workpiece, in order to achieve the purpose of precision machining. This type of processing includes mechanical chemical polishing, ion sputtering and ion implantation, electron beam exposure, laser beam processing, metal evaporation and molecular beam epitaxy.