Talking About The Characteristics Of Precision Parts Processing

Precision parts processing has a lot of advantages, previously shared the specific advantages of precision parts processing, it is obvious that it can reach the high precision that general processing can not reach, high precision also depends on precision processing equipment and precise inhibition system, and the selection of precision mask as an intermediary to achieve a very fine control of the amount of surface layer material removal or increase, so what are the specific characteristics of precision parts processing?

1. Precision parts cutting
There are mainly precision turning, mirror grinding and grinding, etc. Micro-turning with a precision-ground single crystal diamond turning tool on a precision lathe with a cutting thickness of only about 1 micron is commonly used to process high-precision, high-brightness parts such as spherical, aspherical, and flat mirrors of non-ferrous metal materials. For example, an aspheric mirror with a diameter of 800 mm for processing nuclear fusion devices has a high accuracy of 0.1 microns and a surface roughness of Rz 0.05 microns.

2. Precision parts processing
When the machining accuracy of precision parts is nanometer, or even finally in atomic units (atomic lattice spacing is 0.1~0.2 nanometers), the ultra-precision parts cutting method can no longer be adapted, and it is necessary to rely on the method of special precision parts processing, that is, the use of chemical energy, electrochemical energy, thermal energy or electrical energy, etc., so that these energies exceed the joint energy between atoms, so as to remove the attachment, union or lattice deformation of some atoms on the surface of the workpiece, so as to achieve the intention of ultra-precision machining. Classified as such processes are mechanochemical polishing, ion sputtering and implantation, electron beam exposure, laser beam processing, metal evaporation, and molecular beam epitaxy.