V2EX pressure angle

Pressure Angle

Definition 定义

压力角:齿轮(或凸轮等接触机构)中,接触力的作用线与节圆(或节线)处切线之间的夹角。压力角会影响传动的受力方向、效率、噪声、承载能力与轴承载荷等。(在齿轮设计中最常见。)

Pronunciation 发音

/prr l/

Examples 例句

The pressure angle of this gear is 20 degrees.
这个齿轮的压力角是20度。

A larger pressure angle can increase tooth strength, but it also raises radial loads and may affect noise and bearing life.
较大的压力角可以提高齿强度,但也会增大径向力,并可能影响噪声与轴承寿命。

Etymology 词源

pressure 源自中古法语 presse(按压、压力),再上溯与“压、挤”相关的拉丁语词根有关;angle 源自拉丁语 angulus(角)。组合成 pressure angle,字面义为“压力的角度”,用于描述接触力方向相对基准切线的夹角,是机械传动中的标准术语。

Related Words 相关词

In Notable Works 出现于著作

  • Shigley’s Mechanical Engineering Design(《希格利机械工程设计》)
  • Machinery’s Handbook(《机械工程师手册》)
  • Dudley’s Handbook of Practical Gear Design and Manufacture(杜德利《实用齿轮设计与制造手册》)
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