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首页> 外文会议>4th International Conference on Integrated Design and Manufacturing in Mechanical Engineering - IDMME 2002 May 14-16, 2002 Clermont-Ferrand, France >SIMULATION OF REGENERATIVE VIBRATIONS AND SURFACE GENERATION IN FLANK MILLING: APPLICATION TO HIGH SPEED MACHINING
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SIMULATION OF REGENERATIVE VIBRATIONS AND SURFACE GENERATION IN FLANK MILLING: APPLICATION TO HIGH SPEED MACHINING

机译：侧面铣削中再生振动和表面生成的模拟：在高速加工中的应用

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摘要

High speed machining is really suitable for present production constraints. However high rotational speeds inherent to high cutting speeds excite structures at high frequency. Resulting dynamic phenomena can reduce surface quality, damage material and decrease productivity. So as to avoid machining cutting conditions leading to the development of such phenomena, we developed a tool allowing the numerical computation of the machining system dynamic behaviour as well as to predict the machined surface geometry and quality. Our approach is based on the numerical computation at the macroscopic level of workpiece-tool system dynamic behaviour submitted to cutting forces. These forces are modelled and allow us to deduce the workpiece motion thanks to the Newton equation which is solved with an implicit integration scheme. The cutting nonlinearities are taken into account by the modelisation of the surface being machined. Simulation results follow the experimental trends, and a machining simulation example is given to show the main regenerative vibration effects upon the behaviour of machining system as well as upon the surface quality.
机译：高速加工确实适合当前的生产限制。但是，高切削速度所固有的高旋转速度会激发高频结构。产生的动态现象会降低表面质量，损坏材料并降低生产率。为了避免导致这种现象发展的切削条件，我们开发了一种工具，可以对加工系统动态行为进行数值计算，并预测加工后的表面几何形状和质量。我们的方法基于在宏观水平上对刀具-刀具系统施加切削力的动态行为的数值计算。对这些力进行建模，并借助牛顿方程式推导出工件运动，该方程式通过隐式积分方案求解。通过对要加工的表面进行建模来考虑切削的非线性。仿真结果遵循实验趋势，并给出了一个加工仿真示例，以显示主要的再生振动对加工系统的性能以及表面质量的影响。

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