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在能源动力、汽车、航空航天、模具制造等关键零部件的加工过程中,球头铣刀因其特有的刀具几何结构,常作为零件加工的最终成型刀具。考虑到在球头铣刀立铣加工中不同的刀具与工件相对姿态会对切削过程产生不同的影响,本文研究切屑形成和不同走刀方式下切削过程中各物理量(切削力、切削温度等)的变化情况,结合有限元仿真技术在切削加工中的应用,建立硬质合金球头铣刀铣削斜面的有限元模型,模拟相同切削参数下,八种不同走刀方式的球头铣削过程,分析刀具切入切出工件时切屑的形成过程,探究切削力和切削温度的变化规律。仿真结果表明:不同的走刀方式,平均切削合力各不相同,同时切屑和工件的最大切削温度也出现较大差异,而斜坡上坡逆铣的走刀方式所对应的平均切削合力和最大切削温度均最优。
In the energy and power, automotive, aerospace, mold manufacturing and other key parts of the process, the ball cutter because of its unique tool geometry, often as the final part of the forming tool. Considering that different cutter and workpiece relative attitude will have different influence on the cutting process in the milling process of the ball mill, this paper studies the physical quantities (cutting force, cutting temperature, etc.) The finite element model of cemented carbide ball milling cutter was established based on the application of finite element simulation technology in cutting machining. The ball milling process under eight cutting parameters with different cutting parameters was simulated and analyzed Cutting tool cutting into the workpiece when the chip formation process, to explore the cutting force and cutting temperature changes. The simulation results show that the average cutting force varies with the way of cutting and the maximum cutting temperature of chips and workpieces also vary greatly. However, the average cutting force and maximum cutting The temperature is the best.