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中南大学学报(英文版)

Journal of Central South University

Vol. 24    No. 8    August 2017

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Improving cam profile design optimization based on classical splines and dynamic model
XIA Bi-zhong(夏必忠), LIU Xin-cheng(刘新成), SHANG Xin(尚欣), REN Shi-yuan(任世远)

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

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.

 

Key words: cam profile design; spline; optimization; trade-off

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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