Title page for etd-0723116-230154


[Back to Results | New Search]

URN etd-0723116-230154
Author Tsung-chun Lin
Author's Email Address No Public.
Statistics This thesis had been viewed 5359 times. Download 3 times.
Department Mechanical and Electro-Mechanical Engineering
Year 2015
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Geometric Design and Kinetics Analyses of Lobe Cam Drives
Date of Defense 2016-07-17
Page Count 87
Keyword
  • reducers
  • high reduction ratio
  • rigid body transformation
  • lobe cam
  • Abstract A lobe cam reducer is an innovative reduction mechanism that can be applied as a robotic arm joint reducer with desirable rigidity. With a pure rolling contact in motion and an easy processing characteristic, the rotational speed reduction mechanism can provide a large reduction ratio with a limited space. Compared to a harmonic reducer that is limited in low-load applications, difficult to manufacturing, and with a short operating life, a lobe cam reducer can bear a higher load with a low manufacturing cost and a longer operation life.
    This study is focused on presenting a design process, including geometric and kinematic design as well as dynamic analysis for lobe cam reducers. First, the basic design parameters are identified for design selection, subsequently, the conjugate lobe cam profiles are synthesized by using rigid body transformation, and then the curvatures of the cam profiles are analyzed by differential geometry. In addition, the pressure angles of the conjugate lobe cams during operations are evaluated in this study. To characterize the rotational speeds of the lobe cams and rollers, the vector method of rigid body is used. Furthermore, the effects of design parameters on pressure angles, contact forces between the rollers of turrets and the lobe cams, contact stresses, input torque, and support reactions, etc. are observed.
    Advisory Committee
  • Jao-Hwa Kuang - chair
  • Hsin-Pao Chen - co-chair
  • Kuang-Yuh Huang - co-chair
  • Guan-Syong Huang - co-chair
  • Der-Min Tsay - advisor
  • Files
  • etd-0723116-230154.pdf
  • Indicate in-campus at 0 year and off-campus access at 99 year.
    Date of Submission 2016-08-26

    [Back to Results | New Search]


    Browse | Search All Available ETDs

    If you have more questions or technical problems, please contact eThesys