Abstract
The application of band mechanisms offers a wide range of possibilities in designing concepts of modern guide mechanisms. The applied belt pulleys are designed as continuous convex cam disks and allow the application of different transmission functions. A large number of transmission functions can be generated with convex curve shapes. It takes a great deal of effort to determine the correct pulley curve and is difficult for engineers without special knowledge to calculate. The syntheses process of a nonlinear band mechanism is based on the relationships between the evolute and evolvente [1]. The evolute corresponds to the pulley curve and the evolvente corresponds, for example, to the curve of the fix point of a rocker arm. By applying this method in relation with the reverse kinematics and the maintenance of total band length, allowing to generate band mechanism with required curve of transmission ratio. Beside the comments of band mechanism construction and the mathematical method of resolution—the first part of the article explains a simple four bar mechanism of couch chest the total gravity force balance with band mechanism. Therefore, the essential computing steps and limits of the solving process will be explained. With this it is possible to calculate the nonlinear transmission ratio of band mechanism with consideration of elastic band properties and inertia of bodies.
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© 2012 Springer Science+Business Media Dordrecht
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Ebert, F., Berger, M. (2012). Band Mechanism with Nonlinear Gear Ratio for Gravity Force Balance: Design and Analysis in Total System Network. In: Beran, J., BĂlek, M., Hejnova, M., Zabka, P. (eds) Advances in Mechanisms Design. Mechanisms and Machine Science, vol 8. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-5125-5_3
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DOI: https://doi.org/10.1007/978-94-007-5125-5_3
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Online ISBN: 978-94-007-5125-5
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