핀치형 내부로터의 제로터 설계
Design of Gerotor with Pin-tooth Inner Rotor
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참고문헌
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초록
In the conventional gerotor design, the circular arc tooth of the outer rotor is first introduced, and then the inner rotor profile is generated by simulating the outer rotor motion while the inner rotor is fixed. The profile generation of tooth meshing exhibits relativity; therefore, the outer rotor profile can be generated by the movement of the inner rotor. In this study, we propose the design of a gerotor with a pin-tooth inner rotor. First, the pin-tooth inner rotor is devised, and then the outer rotor profile is generated. The profile of the inner rotor is simply composed of equally arranged pins along a circle. The root of the inner rotor is designed as a conjugated arc of two pins. The trajectory of the pin center is obtained by the inner rotor operation, and then the outer rotor profile is determined as a parallel curve of the trajectory. In this gerotor design, the inner rotor has a simple configuration, and contact occurs between the pin parts of the inner rotor and the whole profile of the outer rotor. This affects the material selection and machining process. The pin tooth can be used to design the outer and inner rotors, enabling a double gerotor mechanism corresponding to a planetary gear system.
Abstract
In the conventional gerotor design, the circular arc tooth of the outer rotor is first introduced, and then the inner rotor profile is generated by simulating the outer rotor motion while the inner rotor is fixed. The profile generation of tooth meshing exhibits relativity; therefore, the outer rotor profile can be generated by the movement of the inner rotor. In this study, we propose the design of a gerotor with a pin-tooth inner rotor. First, the pin-tooth inner rotor is devised, and then the outer rotor profile is generated. The profile of the inner rotor is simply composed of equally arranged pins along a circle. The root of the inner rotor is designed as a conjugated arc of two pins. The trajectory of the pin center is obtained by the inner rotor operation, and then the outer rotor profile is determined as a parallel curve of the trajectory. In this gerotor design, the inner rotor has a simple configuration, and contact occurs between the pin parts of the inner rotor and the whole profile of the outer rotor. This affects the material selection and machining process. The pin tooth can be used to design the outer and inner rotors, enabling a double gerotor mechanism corresponding to a planetary gear system.
참고문헌 (6)
- Colbourne, J. R., "The Geometry of Trochoid Envelopes and Their Application in Rotary Pumps", Mechanism and Machine Theory, 9(1-2), pp.421~435 (1974)
- Tsay C. B., "Mathematical Model for the Profile of Gerotor Pumps", J. CSME, 10(1), pp.41~47 (1989)
- Lee, S. C., "Design and Analysis of Gerotor for Hydraulic Motors", J. Korean Soc. Tribol. Lubr. Eng, 11(2), pp.63~70 (1995)[DOI]
- Lee, S. C., "Profile Design of the Inner Rotor of a Gerotor by the Composite Curve of Circular Arcs", J. Korean Soc. Tribol. Lubr. Eng, 22(2), pp.79~86 (2006)[DOI]
- 곽효서, "타원 1-타원형 인벌루트-타원 2 로브 형상의 제로터 최적 설계", 대한기계학회논문집 A, 39(12), pp.1237~1244 (2015), 대한기계학회
- 이성철, "이중 제로터의 설계 및 응용 가능성에 대한 연구", 한국트라이볼로지학회지, 35(4), pp.215~221 (2019), 한국트라이볼로지학회[DOI]