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表面微结构刀具对改善刀-工摩擦接触状态、刀具磨损及抗黏附性方面具有积极作用。在聚晶金刚石刀具表面,利用光纤激光器进行了不同形状的微结构加工,并分析了扫描速度、脉冲频率和平均输出功率等不同工艺参数对微沟槽形貌和质量的影响。实验结果表明:随着平均输出功率和脉冲频率的增加,微沟槽宽度和深度分别表现出增大和减小的趋势;采用较小的扫描速度和和较大的平均输出功率能够降低沟槽侧壁粗糙度,改善微沟槽的形貌质量。
Surface microstructure tools have a positive effect on improving knife-to-work friction contact conditions, tool wear and resistance to adhesion. On the surface of polycrystalline diamond tool, different shapes of microstructures were processed by fiber laser. The effects of different processing parameters such as scanning speed, pulse frequency and average output power on the morphology and quality of microgrooves were analyzed. The experimental results show that with the increase of average output power and pulse frequency, the width and depth of the microgrooves tend to increase and decrease, respectively. The smaller scan speed and larger average output power can reduce the groove side Wall roughness, to improve the appearance of micro-groove quality.