A simulated investigation on the machining instability and dynamic surface generation
A simulated investigation on the machining instability and dynamic surface generation
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DOI：
10.1007/s00170-004-2057-z
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发表时间：
2005-10
期刊：
影响因子：
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通讯作者：
X. Luo;K. Cheng;X. Luo;X. Liu
中科院分区：
文献类型：
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作者：
X. Luo;K. Cheng;X. Luo;X. Liu
本文在分析各种加工失稳行为及其特点的基础上，提出了加工失稳的一般概念。调查涵盖了加工过程的各个方面，包括机床结构响应，切削过程变量，刀具几何形状和工件材料属性在一个完整的动态方案。本文提出了一种新的方法来应对复杂的加工不稳定性，使其更好地了解其对表面生成的影响，通过结合的数值方法与特征方程，并使用框图/功能来表示隐式方程和非线性因素。因此，它避免了冗长的代数运算，在推导结果和解决方案，因此是简单，强大和直观的。几个加工案例的研究和仿真结果表明，所提出的方法是可行的车间数控加工优化，特别是。结果还表明，所提出的方法是有用的监测加工不稳定性和表面形貌和潜在的应用在自适应控制的不稳定性在真实的时间。
In this paper, the authors propose the generic concept of machining instability based on the analysis of all kinds of machining instable behaviours and their features. The investigation covers all aspects of the machining process, including the machine tool structural response, cutting process variables, tooling geometry and workpiece material property in a full dynamic scenario. The paper presents a novel approach for coping with the sophisticated machining instability and enabling better understanding of its affect on the surface generation through a combination of the numerical method with the characteristic equations and using block diagrams/functions to represent implicit equations and non-linear factors. It therefore avoids the lengthy algebraic manipulations in deriving the outcome and the solution scheme is thus simple, robust and intuitive. Several machining case studies and their simulation results demonstrate the proposed approach is feasible for shop floor CNC machining optimisation in particular. The results also indicate the proposed approach is useful to monitor the machining instability and surface topography and to be potentially applied in adaptive control of the instability in real time.