V2EX base circle

Base Circle

Definition / 定义

base circle基圆。在渐开线齿轮等机构中,用来生成齿形渐开线的参考圆;齿形的渐开线可看作一根“拉紧的绳子”从基圆上放开时描出的轨迹。(在其他语境中也可指“底部的圆”,但工程领域最常见的是“基圆”。)

Pronunciation / 发音

/bes skl/

Examples / 例句

The base circle determines the involute tooth shape.
基圆决定渐开线齿形。

In gear design, if the base circle radius changes, the pressure angle and contact conditions can be affected.
在齿轮设计中,如果基圆半径发生变化,压力角与啮合接触条件可能会受到影响。

Etymology / 词源

base 源自表示“基础、底部”的词根含义,circle 来自拉丁语 circulus(小圆)。组合成 base circle,字面意思是“作为基础的圆”,在齿轮几何中专指“用作生成渐开线的基准圆(基圆)”。

Related Words / 相关词

Literary Works / 作品举例

  • Machinery's Handbook(《机械手册》)齿轮几何与渐开线参数(含基圆/基圆半径)相关章节常出现该术语。
  • Fundamentals of Machine Component Design(《机械元件设计基础》)齿轮啮合与齿形生成的讲解中常用到 base circle
  • Gear Geometry and Applied Theory(齿轮几何与应用理论类专著)讨论渐开线齿形推导时频繁使用 base circle
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