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
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 m . All load influences on tooth root stress are included, insofar as they are the mn 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, σ , or the permissible tooth root F stress σ FP. 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 ε < 2. The results are valid within the vα 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.
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