The Involute Cam Rotary Actuator for Hydraulic Servomechanisms
[Technical Report, Other]
JOHNS HOPKINS UNIV LAUREL MD
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The article shows that a rotary hydraulic actuator, by virtue of a symmetrical involute cam rocker arm, will offer the following attractions to designers no backlash and high stiffness no rotary high pressure fluid seals, no high starting or running friction zero pressure angle angular motion directly proportional to linear motion constant torque throughout full range of motion simplicity, economy and reliability. Through examples illustrating several basic types, the fundamental design procedure is presented, together with instructions for calculating all pertinent dimensions. Material selection that oft-neglected subject is discussed, and a few timely hints of practical consideration is offered.
- Hydraulic and Pneumatic Equipment
- Machinery and Tools