一、螺纹的基本知识

• 作 者: 支农
• 出 处: 农业机械资料
• 发表日期: 1976年05期
• 关键词: 螺纹 牙形 梯形螺纹 公制螺纹 普通螺纹 三角形 导程 外螺纹 精度等级 左旋螺纹

一、螺纹的种类和用途螺纹的种类很多,常用的螺纹总的说来可分为公制和吋制(又叫英制)两大类。我国基本上采用公制螺纹。吋制螺纹主要用在管螺纹以及一些国外进口机型的修配工作中。如果按牙形来分,大致可分为以下几种: 1.三角形螺纹或普通螺纹(图1—1):牙形角为60°,一般作连接用。 2.方形和梯形螺纹(图1—

First, the types and uses of threads There are many types of threads, commonly used threads in general can be divided into metric and inch system (also known as the British system) two categories. My country basically uses metric thread. Inch inch thread is mainly used in the pipe thread and some foreign imports of models in the fitting work. If you press toothed points, can be divided into the following categories: 1. Triangular thread or ordinary thread (Figure 1-1): tooth angle of 60 °, generally for connection. 2. Square and trapezoidal thread (Figure 1-