Study on Tooth Profile of Involute Conjugated Internal Gear for High-Pressure Internal Gear Pumps


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Conjugated internal gear is the key component of high-pressure internal gear pumps, which decides the performance of the pumps, such like volumetric efficiency, capacity of fluid discharge, wear life, flow pulse, vibration and noise. In this paper, a method of generating tooth profiles for conjugated internal gear is presented. Based on gear geometry and meshing theory, the parametric equations of involute conjugated internal gear are derived. With the help of MATLAB and SolidWorks, 3D models of the gear couple are built to evaluate the feasibility of the method.



Advanced Materials Research (Volumes 328-330)

Edited by:

Liangchi Zhang, Chunliang Zhang and Zichen Chen




W. Song and H. Zhou, "Study on Tooth Profile of Involute Conjugated Internal Gear for High-Pressure Internal Gear Pumps", Advanced Materials Research, Vols. 328-330, pp. 186-189, 2011

Online since:

September 2011





[1] J. R. Colbourne: Gear Shape and Theoretical Flow Rate in Internal Gear Pumps, Transaction CSME, Vol. 3 (1975) No. 4, pp.215-223.

[2] J. B. Shung and G. R. Pennock: Geometry for Trochoidal Type Machines with Conjugate Envelopes, Mechanism Machine Theory, Vol. 29 (1994) No. 1, pp.25-42.


[3] F. L. Litvin and A. Fuentes: Gear Geometry and Applied Theory (Cambridge University Press, U. K. 2004).

[4] G. Mimmi and P. Pennacchi: Involute Gear Pumps versus Lobe Pumps: a Comparison, ASEM Journal of Mechanical Design, Vol. 119 (1997) No. 4, pp.458-465.


[5] Q. Lin: Theory and Application of Function of Meshing Angle for Conjugated Curve (Science Press, Beijing 1995) (In Chinese).

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