石墨材料钻孔边界破碎的优化研究

Study for optimize the broken of boundary when drilling graphite

采用实验方法结合理论分析,研究了钻削石墨材料时,钻削参数对扭矩及钻削力、工件及钻头温度、切屑颗粒大小及已加工孔内壁粗糙度的影响,分析了钻削参数与石墨材料钻孔直径及出入口边界破损率的关系,提出了石蜡加固法及孔后铣削法两种解决出入口边界严重破损的方案,并通过实验验证了两种方案的可靠性。

Experimental method combining with theoretical analysis are used to research the influence of drilling parameters on torque, drilling force, temperature of workpiece and drill, chip size and the toughness of hole the wall, and to analyze the relationship of drilling parameters with the hole diameter and the broken rate of hole boundary. Also, two methods for diminishing the damage of hole boundary are proposed and verified.