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首页> 外文会议>International Conference on Multi-Material Micro Manufacture >Increasing accuracy and machining speed in precise electrochemical machining of a micro injection molding cavity
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Increasing accuracy and machining speed in precise electrochemical machining of a micro injection molding cavity

机译：在微注塑腔的精确电化学加工中提高精度和加工速度

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摘要

In micro injection molding, cavities with high accuracy are required in order to fulfil the given requirements on precision. The molding inserts are often made of additive manufactured alloys in order to create conformal cooling or heating channels close to the injection molding cavity. Since these materials are usually harder than melting metallurgical alloys of the same composition, Precise Electrochemical Machining (PEM) represents a potential procedure for micro manufacturing of high precision cavities, because mechanical characteristics such as the material's hardness and the ductility have no influence on the electrochemical machinability. In addition, no mechanical forces nor thermal impact influence the machining result. Due to the missing mechanical contact between the tool electrode and the machined cavity, filigrane structures with high precision can be manufactured even in mechanically hard to machine materials. The dissolution behavior of the work piece material is only influenced by its electrochemical attributes. In this study, precise electrochemical machining of a stainless steel (1.4301) plate is investigated. A complex shaped brass electrode is applied in order to create a complicated cavity, which would be difficult to be machined by conventional techniques. For the determination of the precision, the influence of an increasing feed rate on the resulting cross-sectional shape of the cavity as well as on the lateral widening and on the influence of a micro pillar is examined.
机译：在微注塑成型中，需要高精度的空腔，以便满足定精度的给定的要求。模塑插入件通常由添加制造合金制成，以便在靠近注射成型腔靠近靠近注射成型腔的保形冷却或加热通道。由于这些材料通常比熔融冶金合金相同的组成，因此精确的电化学加工（PEM）代表高精度腔微型制造的潜在程序，因为诸如材料的硬度等机械特性对电化学没有影响可加工性。此外，没有机械力也没有热冲击影响加工结果。由于工具电极和机加工腔之间的机械接触缺失，即使在机械难以加工到机器材料中也可以制造高精度的丝夹结构。工件材料的溶出行为仅受其电化学属性的影响。在该研究中，研究了不锈钢（1.4301）板的精确电化学加工。施加复合形状的黄铜电极以产生复杂的腔，这是难以通过常规技术加工的复杂腔体。为了确定精度，研究了增加进料速率对腔的横截面形状的影响以及微柱的横向加宽和对微柱的影响。

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