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Improving cam profile design optimization based on classical splines and dynamic model

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Abstract

Cam profiles play an important part in the performance of cam mechanisms. Syntheses of cam profile designs and dynamics of cam designs are studied at first. Then, a cam profile design optimization model based on the six order classical spline and single DOF (degree of freedom) dynamic model of single-dwell cam mechanisms is developed. And dynamic constraints such as jumps and vibrations of followers are considered. This optimization model, with many advantages such as universalities of applications, conveniences to operations and good performances in improving kinematic and dynamic properties of cam mechanisms, is good except for the discontinuity of jerks at the end knots of cam profiles which will cause vibrations of cam systems. However, the optimization is improved by combining the six order classical spline with general polynomial spline which is the so-called “trade-offs”. Finally, improved optimization is proven to have a better performance in designing cam profiles.

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Authors and Affiliations

  1. Department of Advanced Manufacturing, Shenzhen Graduate School of Tsinghua University, Shenzhen, 518055, China

    Bi-zhong Xia  (夏必忠), Xin-cheng Liu  (刘新成), Xin Shang  (尚欣) & Shi-yuan Ren  (任世远)

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  1. Bi-zhong Xia  (夏必忠)
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  2. Xin-cheng Liu  (刘新成)
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  3. Xin Shang  (尚欣)
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  4. Shi-yuan Ren  (任世远)
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Correspondence to Xin Shang  (尚欣).

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Xia, Bz., Liu, Xc., Shang, X. et al. Improving cam profile design optimization based on classical splines and dynamic model. J. Cent. South Univ. 24, 1817–1825 (2017). https://doi.org/10.1007/s11771-017-3590-x

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  • DOI: https://doi.org/10.1007/s11771-017-3590-x

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