ISO 10300-3:2023 锥齿轮承载能力计算方法 第3部分：齿根弯曲强度计算
标准编号：ISO 10300-3:2023
中文名称：锥齿轮承载能力计算方法 第3部分：齿根弯曲强度计算
英文名称：Calculation of load capacity of bevel gears — Part 3: Calculation of tooth root strength
发布日期：2023-08
标准范围
本文件规定了用于直齿和斜齿（斜齿）、零齿和螺旋锥齿轮（包括准双曲面齿轮）齿根应力计算的基本公式，最小轮辋厚度低于3.5？嗯。所有载荷对齿根应力的影响都包括在内，只要它们是齿轮传递的载荷的结果并且能够定量评估。在计算齿根应力σ f或允许齿根应力σ fp时，应考虑由齿轮轮辋的收缩配合引起的应力，这些应力叠加在齿载荷引起的应力上。本文件不适用于牙齿侧面断裂的评估。本文中的公式以虚拟圆柱齿轮为基础，仅限于虚拟圆柱齿轮横向接触比为ε v α的锥齿轮？<？2.结果在ISO规定的应用因子范围内有效？10300-1.弯曲强度公式？适用于齿圆角处的断裂，但不适用于主动齿面表面上的断裂、齿轮轮辋或齿轮毛坯通过腹板和轮毂的失效。本文件不适用于高于103次循环所允许的应力水平，因为该范围内的应力可能超过轮齿的弹性极限。笔记？本文件不适用于在负载下接触模式不充分的锥齿轮。请用户注意，当公式用于大的平均平均螺旋角(β m1？+？β m2)/2？>？45°，对于有效压力角α e？>？30°和/或对于大面宽b？>？13？mmn，本文计算结果应经经验证实。
This document specifies the fundamental formulae for use in the tooth root stress calculation of straight and helical (skew), Zerol and spiral bevel gears including hypoid gears, with a minimum rim thickness under the root of 3,5 mmn. All load influences on tooth root stress are included, insofar as they are the result of load transmitted by the gearing and able to be evaluated quantitatively. Stresses, such as those caused by the shrink fitting of gear rims, which are superposed on stresses due to tooth loading, are intended to be considered in the calculation of the tooth root stress, σF, or the permissible tooth root stress σFP. This document is not applicable in the assessment of tooth flank fracture.
The formulae in this document are based on virtual cylindrical gears and restricted to bevel gears whose virtual cylindrical gears have transverse contact ratios of εvα < 2. The results are valid within the range of the applied factors as specified in ISO 10300-1. The bending strength formulae are applicable to fractures at the tooth fillet, but not to those on the active flank surfaces, to failures of the gear rim or of the gear blank through the web and hub.
This document does not apply to stress levels above those permitted for 103 cycles, as stresses in that range can exceed the elastic limit of the gear tooth.
NOTE This document is not applicable to bevel gears which have an inadequate contact pattern under load.
The user is cautioned that when the formulae are used for large average mean spiral angles (βm1 + βm2)/2 > 45°, for effective pressure angles αe > 30° and/or for large facewidths b > 13 mmn, the calculated results of this document should be confirmed by experience.
标准预览图
