Micro assembly is typically characterised by positioning tolerances below a few micro meters. In the case of the assembly of hybrid micro systems, such as optical glass fibres, micro ball lenses or micro probes for measurement tasks, even positioning accuracies in the sub-micrometer range have to be achieved. Due to the need of highly accurate assembly systems and extensive alignment procedures, the assembly of hybrid micro systems is characterized by customized solutions. Therefore, the automated assembly of low and medium lot sizes is extremely time consuming and expensive. On behalf of this background the Fraunhofer IPT conducts research on a concept to realize a highly flexible, fast and cost-efficient micro assembly based on conventional assembly systems combined with a six axis fine positioning assembly head. In this context, a concept for the design of a miniaturised tri-point vacuum gripping device with integrated positioning and alignment capabilities is presented.
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