标准编号：ISO 10300-3:2014
中文名称：斜面齿轮负载容量计算 第3部分：齿根强度计算
英文名称：Calculation of load capacity of bevel gears — Part 3: Calculation of tooth root strength
发布日期：2014-04
标准范围
This part of ISO 10300 specifies the fundamental formulae for use in the tooth root stress calculationof straight and helical (skew), Zerol and spiral bevel gears including hypoid gears, with a minimum rimthickness under the root of 3,5 mmn. All load influences on tooth root stress are included, insofar asthey 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 toothloading, are intended to be considered in the calculation of the tooth root stress, σF, or the permissibletooth root stress σFP. This part of ISO 10300 is not applicable in the assessment of the so-called flankbreakage, a tooth internal fatigue fracture (TIFF).The formulae in this part of ISO 10300 are based on virtual cylindrical gears and restricted to bevelgears whose virtual cylindrical gears have transverse contact ratios of εvα < 2. The results are validwithin the range of the applied factors as specified in ISO 10300?1 (see also ISO 6336?3[1]). Additionally,the given relationships are valid for bevel gears, of which the sum of profile shift coefficients of pinionand wheel is zero (see ISO 23509).This part of ISO 10300 does not apply to stress levels above those permitted for 103 cycles, as stressesin that range could exceed the elastic limit of the gear tooth.Warning — The user is cautioned that when the formulae are used for large average mean spiralangles (βm1 + βm2)/2 > 45°, for effective pressure angles αe > 30° and/or for large face widthsb > 13 mmn, the calculated results of ISO 10300 (all parts) should be confirmed by experience.
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