Abstract
Aiming at the problems of the general involute external gear pump, a gear pump with double circular arc helical gear as motion pair is proposed. Based on the comparison and analysis of their meshin...
Highlights
As the external gear pump has the characteristics of a simple structure, easy fabrication, low cost, small size, good pollution resistance, and self-suction capacity, it has been widely used in the industrial field
The single circle arc gear pump proposed by Y Liu et al.[5] has no pulsation in theory, but the machining of the gear is complicated and the bearing capacity is low; A ‘‘silent gear pump’’ of Rexroth was exhibited at the 2011 exhibition in Hannover, it is a double circular arc helical gear pump, the noise is reduced by 15 dB(A) on average as compared with standard external gear pumps, and moved to bass, the flow
Taking the sine curve as the transition curve, and based on the principle of gear conjugation, the tooth profile equation of the double circular arc helical gear can be obtained, which provides a theoretical basis for the research and development of the double-arc helical gear pump
Summary
As the external gear pump has the characteristics of a simple structure, easy fabrication, low cost, small size, good pollution resistance, and self-suction capacity, it has been widely used in the industrial field. Taking the sine curve as the transition curve, and based on the principle of gear conjugation, the tooth profile equation of the double circular arc helical gear can be obtained, which provides a theoretical basis for the research and development of the double-arc helical gear pump.
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