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首页> 外文会议>CIRP International Conference on High Performance Cutting >Fabrication of a ball end nose micro milling tool by tangential laser ablation
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Fabrication of a ball end nose micro milling tool by tangential laser ablation

机译：通过切向激光消融制造球端鼻微铣刀

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The general trend towards miniaturization of components is leading to an increasing demand for micro cutting tools.Such tools are found in a variety of applications like optics manufacturing,mold machining or medical technology Indeed,micromachining exhibits a high efficiency,accuracy and low cost in comparison to other micro processing technologies.Micro cutting tools are mostly produced by grinding,a mechanical process,which might damage the tool due to induced forces,vibrations and heat.These detrimental effects cause the high scrap rate in the manufacturing of micro cutting tools and limited geometrical flexibility.A new approach for the manufacturing of micro cutting tools is given by the ultrashort-pulsed laser technology: it enables material removal,which is independent of the hardness of the workpiece material and with only a negligible heat-affected zone.In most cases,laser ablation is disadvantaged in contrast to grinding because of its relatively low material-removal rate.When it comes to the manufacturing of micro cutting tools the small amount of material to be removed makes the ultra-short pulsed laser an interesting alternative to grinding.Furthermore,the laser ablation is a force and wear-free process,which ensures high precision.In this paper,a commercially available micro ball end mill geometry is measured by micro X-ray tomography and 3D microscopy.The movement of the mechanical axes and the path of the laser beam for manufacturing the desired tool are determined based on these measurements.The milling tools with a diameter of 100 um are produced from cemented carbide blanks,on a 8-axis laser machining center.After machining,the tools are analyzed by SEM and using FIB: By creating a cross section perpendicular to the cutting edge the heat-affected zone is examined Finally,the cutting tool is successfully applied for the manufacturing of micro electrodes in copper for an EDM process while recording the cutting forces.
机译：组件小型化的一般趋势导致对微型切削刀具的需求不断增加。在光学制造，模具加工或医疗技术等各种应用中，微机械线的效率也存在高效率，准确性和低成本相比到其他微加工技术.. Micro切割工具主要通过研磨，机械过程产生，这可能会因诱导的力，振动和热而损坏工具。这些有害影响导致微型切削工具制造中的高废速率和有限几何灵活性。通过超短脉冲激光技术给出了制造微型切削工具的新方法：它能够拆除材料，其独立于工件材料的硬度，并且仅具有可忽略的热影响区域。最多案例，由于其相对较低的材料去除率，激光消融与磨削是造影的。据符合微型切削工具的制造，少量的待除去材料使得超短脉冲激光成为研磨的有趣替代品。加热，激光消融是一种力和无耐磨过程，可确保高精度。本文通过微X射线断层扫描和3D显微镜测量市售的微球终研磨几何。机械轴和用于制造所需工具的激光束的移动的移动是基于这些测量来确定的。直径为100μm的铣削工具是由硬质合金坯料生产的，在8轴激光加工中心。加工后，通过SEM和使用FIB分析工具：通过创建垂直于切削刃的横截面 - 热 - 最后检查受影响的区域，在记录切割力的同时成功地将切割工具成功应用于用于EDM工艺的微电极。

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