锥齿轮承载能力计算第2部分：表面耐久性计算（宏观点蚀）

[中文适用范围]： 本文件规定了用于确定直齿轮、斜齿轮、Zerol 齿轮和螺旋锥齿轮（包括准双曲面齿轮）的表面承载能力的基本公式，包括对表面耐久性的所有影响，可以对其进行定量评估。本文件适用于油润滑锥齿轮，只要啮合中始终有足够的润滑剂。本文件中的公式基于虚拟圆柱齿轮，且仅限于虚拟圆柱齿轮的横向接触比 εvα < 2 的锥齿轮。结果在 ISO 10300-1 规定的应用因子范围内有效。本文件中的公式不直接适用于评估其他类型的齿轮齿面损伤，例如塑性屈服、划痕、擦伤或任何其他未指定的类型。注：本文件不适用于在载荷下接触模式不充分的锥齿轮。用户应注意，当公式用于大平均螺旋角 (βm1 + βm2)/2 > 45°、有效压力角 αe > 30° 和/或大齿宽 b > 13 mmn 时，应通过经验来确认本文献的计算结果。 [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.