15 October 2013 Hexapods with fieldbus interfaces for automated manufacturing of opto-mechanical components
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Proceedings Volume 8884, Optifab 2013; 88842G (2013) https://doi.org/10.1117/12.2043506
Event: SPIE Optifab, 2013, Rochester, New York, United States
Abstract
The adjustment of opto-mechanical components in manufacturing processes often requires precise motion in all six degrees of freedom with nanometer range resolution and absence of hysteresis. Parallel kinematic systems are predestined for such tasks due to their compact design, low inertia and high stiffness resulting in rapid settling behavior. To achieve adequate system performance, specialized motion controllers are required to handle the complex kinematic models for the different types of Hexapods and the associated extensive calculations of inverse kinematics. These controllers often rely on proprietary command languages, a fact that demands a high level of familiarization. This paper describes how the integration of fieldbus interfaces into Hexapod controllers simplifies the communication while providing higher flexibility. By using standardized communication protocols with cycle times down to 12.5 μs it is straightforward to control multiple Hexapods and other devices by superordinate PLCs of different manufacturers. The paper also illustrates how to simplify adjustment and alignment processes by combining scanning algorithms with user defined coordinate systems.
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Steffen Schreiber, Christian Muellerleile, Markus Frietsch, Rainer Gloess, "Hexapods with fieldbus interfaces for automated manufacturing of opto-mechanical components", Proc. SPIE 8884, Optifab 2013, 88842G (15 October 2013); doi: 10.1117/12.2043506; https://doi.org/10.1117/12.2043506
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