Tungsten carbidecutting tools are often used to process refractory materials. The wear resistance and machining performance of hard alloy cutting tools can be improved by the surface texturing technology. As a fast non-contact automatic machining technology, laser machining can produce microstructures on the surface of cemented carbide tools. In this paper, the influence of the average power, scanning speed, pulse frequency, defocusing amount and scanning times on the microstructural size and morphology of cemented carbide cutting tools is studied, so as to select the optimal laser processing parameters. The experimental results show that the depth and width of the micro-groove increase with the increase of the average power, but the excessive power leads to severe ablation and uneven bottom side morphology. The increase of scanning speed and pulse frequency will make the depth and width of the micro groove decrease. The too large scanning speed will make the bottom surface discontinuous. With the increase of pulse frequency and scanning frequency, the bottom surface of the groove becomes flat. Defocusing goes from 0mm to negative 1. At 2mm, the width of the micro-groove slowly increases, while the depth first increases and then decreases, and the bottom surface morphology changes from continuous to sparse holes. By optimizing the technological parameters of the hard alloy cutting tool for laser machining, the fine single and mixed microstructures of the cutting tool surface were prepared.

For coating woodworking tool wear characteristics, through the coating cemented carbide cutting tool cutting in cocobolo test, with the help of scanning electron microscope and energy spectrometer, tool wear surface observation analysis, to study during the turning processing/toe cocobolo workpiece of different processing parameters on the coating cemented carbide tool wear. According to the test results available: with the increase of cutting speed on each floor, cutter knife after the surface wear is also increased; However, with the increase of cutting distance, the influence of different outer cutting feed speed and molding cutting feed speed on the wear on the cutting surface after cutting tool gradually decreases. Under the same processing parameters, the sequence of coating peeling of the tool is tin-al2 with the increase of cutting distance O3 - TiC, until coating spalling, completely exposed substrate and coating failure in the end. In the process of cutting tool coating failure, often accompanied by flake coating falls off phenomenon. After coating complete failure, main produce tool matrix and workpiece oxidation wear and adhesion wear. Therefore, when turning processing wooden crafts, selecting rational Angle of the structure of the cutting tools, setting reasonable processing parameters, not only can improve the machining efficiency, also can improve the service life of the cutting tool.

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