Abstract
Characteristics of ultrasonic rotary motors using a longitudinal-torsional vibration converter 15 mm to 50 mm in diameter are described. To obtain large torque, ultrasonic motors using one-dimensional longitudinal-torsional converters with diagonal slits are proposed. The converters have rather simple and tough structures and are driven using only a longitudinal vibration transducer. The vibration converters are made of metal materials and have diagonal slits cut along the converter circumference adjacent to a nodal position of longitudinal vibration. The ultrasonic motors consist of a vibration converter with a driving part at its free edge, and a rotor part pressed statically to a driving surface using corned disk springs. Vibration characteristics and vibration loci at driving surfaces of these motors are measured under loaded and nonloaded conditions and under forward and reverse rotating conditions. Maximum torques over 0.3 to 23 N m were obtained by the converters 15 to 50 mm in diameter and at frequencies of 80 to 23 kHz. Maximum revolution obtained was over 550 rpm using a 15 mm diameter motor of 56 kHz.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.