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Investigation on cutting edge preparation and FEM assisted optimization of the cutting edge micro shape for machining of nickel-base alloy

机译：镍基合金加工切削刃微型切削刃制备和有限元辅助优化研究

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摘要

The productivity and the tool life of cutting tools are majorly influenced by the cutting edge micro shape. The identification of optimized cutting edges is usually based on empirical knowledge or is carried out in iterative investigation steps. This paper presents an approach to predict optimal cutting edge micro shapes with the aid of finite-element-simulations of the chip formation. The approach is investigated for the machining of the nickel-base alloy Inconel 718. The cutting edges are prepared by pressurized air wet abrasive jet machining. Utilizing this method, the prepared cutting edges have a certain profile, which is considered for the modelling. By applying a model for tool wear the influence of the cutting edge micro shape on the tool life span is estimated. Subsequently, a statistical modelling provides the prediction of the tool wear rate for any possible parameter set within the investigated range. This is used to find an optimized cutting edge profile that minimizes the tool wear. An experimental investigation concludes the optimization procedure.
机译：切削刀具的生产率和工具寿命受到切削刃微型的主要影响。优化切削刃的识别通常基于经验知识，或者在迭代调查步骤中进行。本文借助于芯片形成的有限元模拟预测最佳切削刃微观形状的方法。研究了该方法以加工镍基合金Inconel 718.通过加压空气湿磨料喷射加工制备切削刃。利用该方法，制备的切削刃具有一定的轮廓，被认为是建模。通过应用工具磨损模型，估计了切削刃微观形状对刀具寿命的影响。随后，统计建模提供了对在研究范围内设置的任何可能参数的工具磨损率的预测。这用于找到优化的切削刃轮廓，最小化工具磨损。实验调查结束了优化程序。

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