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本文推出了一种适合于双螺杆式无油真空泵的单头变螺距梯形级齿凹齿面的螺杆转子型线,介绍了基本型线的生成原理和齿型的构造方法,给出了完整的型线方程和型线的一些特征参数。
In this paper, a kind of screw rotor profile for a single-head variable-pitch trapezoidal gear with concave tooth surface is introduced, which is suitable for a twin-screw oilless vacuum pump. The principle of generating the basic profile and the construction method of the tooth profile are introduced. Some characteristic parameters of the profile equation and profile.