• Title, Summary, Keyword: Epitrochoid Curve

Search Result 2, Processing Time 0.051 seconds

A Study on the Design of Planocentric Torque Driver used in Industrial Robot (로보트용 내접 유성식 감속기의 설계에 대한 연구)

  • 이성철;오박균;권오관
    • Tribology and Lubricants
    • /
    • v.3 no.2
    • /
    • pp.72-80
    • /
    • 1987
  • A planocentric torque driver comprises a stationary internal gear with the teeth of a circular concave profile and an external gear of an epitrochoid curve. The contact mechanism of the teeth is examined and analyzed by means of computer simulation. Analyses of load variation on the tooth and strength of appliance is carried out. And the output device is examined. Finally, the design of a 59:1 reduction ratio torque driver is presented.

Design and Analysis of Gerotor with Generalized Shapes for Power-Steering Units (파워 스티어링 유닛용 일반형상 제로터의 설계 및 해석)

  • Jeong, Jae-Tack;Shin, Soo-Sik;Kim, Kap-Tae
    • Transactions of the Korean Society of Mechanical Engineers A
    • /
    • v.34 no.7
    • /
    • pp.891-896
    • /
    • 2010
  • A gerotor is used in power-steering units (PSUs) as well as in hydraulic motors or pumps. The inner rotor is developed on the basis of the shape of the outer rotor tooth, which normally has one arc. The method of generating inner rotor on the basis of a generalized shape of outer rotor is analyzed with a view to improve PSU characteristics. An arc-shaped outer rotor with two curvatures was used in the analysis; design parameters such as the shape and curvature of the inner rotor, the flow rate of the gerotor, the position of contact point, and slip velocity are calculated, and these results are shown. This analysis enables us to develop a new design of compact PSUs.