锥齿轮承载能力的计算 第1部分：简介和一般影响因素

[中文适用范围]： 本文件规定了锥齿轮承载能力的计算方法、计算所用的公式和符号以及影响载荷条件的一般因素。本文件中的公式旨在建立统一可接受的方法来计算直齿轮、斜齿轮、螺旋锥齿轮、Zerol 齿轮和准双曲面齿轮的承载能力。它们同样适用于锥形齿和等深齿。下文中，“锥齿轮”一词指代所有齿轮类型；如果不是，则指明具体形式。本文件中的公式考虑了影响承载能力的已知主要因素。评级公式仅适用于齿轮齿磨损类型，这些类型在 ISO 10300 系列的各个部分中专门讨论。可以通过为一般公式中使用的因素选择适当的值来建立特定类型锥齿轮的评级系统。注：本文件不适用于在载荷下接触模式不足的锥齿轮（见附件 D）。本文件的评级系统基于虚拟圆柱齿轮，并仅限于虚拟圆柱齿轮横向接触比为 εvα < 2 的锥齿轮。此外，对于锥齿轮，小齿轮和大齿轮的齿廓变位系数之和为零（参见 ISO 23509）。请注意，当公式用于较大的平均螺旋角 (βm1 + βm2)/2 > 45°、有效压力角 αe > 30° 和/或较大的齿宽 b > 13 mmn 时，本文件的计算结果应通过经验确认。 [外文原描述]： This document specifies the methods of calculation of the load capacity of bevel gears, the formulae and symbols used for calculation, and the general factors influencing load conditions. The formulae in this document are intended to establish uniformly acceptable methods for calculating the load-carrying capacity of straight, helical (skew), spiral bevel, Zerol and hypoid gears. They are applicable equally to tapered depth and uniform depth teeth. Hereinafter, the term “bevel gear” refers to all of the gear types; if not, the specific forms are identified. The formulae in this document take into account the known major factors influencing load-carrying capacity. The rating formulae are only applicable to types of gear tooth deterioration, that are specifically addressed in the individual parts of the ISO 10300 series. Rating systems for a particular type of bevel gears can be established by selecting proper values for the factors used in the general formulae. NOTE This document is not applicable to bevel gears which have an inadequate contact pattern under load (see Annex D). The rating system of this document is based on virtual cylindrical gears and restricted to bevel gears whose virtual cylindrical gears have transverse contact ratios of ε v α < 2. Additionally, for bevel gears the sum of profile shift coefficients of pinion and wheel is zero (see ISO 23509). The user is cautioned that when the formulae are used for large average mean spiral angles ( β m1 + β m2 )/2 > 45°, for effective pressure angles α e > 30° and/or for large facewidths b > 13 m mn , the calculated results of this document should be confirmed by experience.