Research on Picosecond Laser Processing Characteristics of PCD Micro Tools
Sharp and wear-resistant micro cutting tools play an indispensable role in high-precision micro machining.Diamond material is highly regarded for its outstanding hardness,excellent wear resistance,and remarkable thermal conduc-tivity,making it widely used in the production of sharp and durable cutting tools.In recent years,diamond micro cutting tools have become the focus of research,but their complex preparation process and high cost have limited their large-scale commercial application.In this study,polycrystalline diamond(PCD)micro cutting tools are prepared using picosecond-pulse laser.The influence of laser cutting parameters,including pulse energy,pulse spacing,and laser wavelength,as well as material characteristics such as PCD grain size,on the machining results is systematically investigated.Through in-depth re-search,the mechanism of the formation of the cutting edge and surface of PCD tools after picosecond laser processing is re-vealed.The surface roughness of the processed PCD reached Ra200nm,and the prepared PCD micro cutting tools exhibited excellent cutting performance for oxygen-free copper and carbide.
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