内啮合齿轮泵有两种齿形即：渐开线齿形和摆线齿形。
Internal gear pump has two kinds of tooth profile namely: involute profile and cycloidal tooth profile.
摆线齿形的内啮合齿轮泵又叫做摆线转子泵，泵中的小齿轮和内齿轮只相关一个齿，因此这种内啮合齿轮泵不需要设置隔板。
Cycloidal tooth profile of the internal gear pump, also called cycloidal rotor pump, pump the small gear and internal gear only related a tooth, so the internal gear pump do not need to set partition.
本文研究摆线钢球减速器关键技术之一，无侧隙啮合副共轭齿形综合问题。
The paper researches one of the key techniques of the cycloid steel ball reducer, that is the synthesis of conjugate waves shapes for no gear clearance engagement pair.
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