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工业激光使显微机械加工技术更为精良 - China Medical Device Manufacturer
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Wed, January 17th, 2018

2006年1/2月刊 » 技术新知
工业激光使显微机械加工技术更为精良

Fraunhofer激光技术研究所开发的螺旋钻孔技术可以钻出直径从30到300m的孔。
工业激光再度突破了医疗设备精密加工的极限。新式系列二极管泵浦激光以及新引进的螺旋钻孔技术是两个最新示例。

Edgewave GmbH公司(德国, Wrselen; www.edge-wave.com)推出的Innoslab二极管泵激光属于新的PP范围,是一种基于该公司称为板条概念的激光技术。通过一个激光二极管堆叠结构,可以将薄层激光水晶(即板条激光器)激活。混合谐振腔将激光束从泵中提取出来,生成一种高度集中的光束。因此,该系统适用于等离子生成、微钻孔、切割、构造、清洁、磨光和刻印等一系列应用。可以在玻璃上进行具有自由定义轴特征的精确微钻孔操作。对横向部分和纵向部分均可进行各种调整。这种性能特别引起了医疗技术公司和分析仪器制造商的兴趣。不仅如此,还可以用激光在透明材料的内表面上做印记。

此空冷激光十分小巧,可以轻易融入生产进程之中。这些光束传输的平均能量高达30W,最大脉冲功率达1mW,脉冲频率50kHz。

Fraunhofer激光技术研究所(ILT, 德国, Aachen; www.ilt.fraunhofer.de)也开发了一种小巧的螺旋钻孔技术,可以与激光系统进行整合,用于进行精确和灵活的微钻孔操作。据该研究所称,传统的加工技术不适合用于微型植入物和部件尺寸低于20m的工具,而此项新技术能够轻松解决这一问题。

此项技术涉及到将旋转运动的激光穿射加工件并使其熔化。研究所所长Reinhart Poprawe解释道:激光束通过一个旋转的映射旋转体来定向,而旋转体合并到空轴发动机,后者产生高速旋转动力。

利用该技术可以钻出直径为30到300m的孔。通过倾斜激光束,可以钻出扩展比为1:2的锥形孔。在其他医疗应用方面,该技术还可以用来生产微剂量给药系统。


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