標準號：ISO 6336-3-2006
中文標準名稱：直齒輪和斜齒輪承載能力的計算.第3部分:輪齒彎曲強度的計算
英文標準名稱：Calculation of load capacity of spur and helical gears - Part 3: Calculation of tooth bending strength
標準類型：J17
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：J17
國際標準分類號：21.200
適用范圍：This part of ISO 6336 specifies the fundamental formulae for use in tooth bending stress calculations forinvolute external or internal spur and helical gears with a rim thickness sR > 0,5 ht for external gears andsR > 1,75 mn for internal gears. In service, internal gears can experience failure modes other than toothbending fatigue, i.e. fractures starting at the root diameter and progressing radially outward. This part ofISO 6336 does not provide adequate safety against failure modes other than tooth bending fatigue. All loadinfluences on tooth stress are included in so far as they are the result of loads transmitted by the gears and inso far as they can be evaluated quantitatively.The given formulae are valid for spur and helical gears with tooth profiles in accordance with the basic rackstandardized in ISO 53. They may also be used for teeth conjugate to other basic racks if the virtual contactratio εαn is less than 2,5.The load capacity determined on the basis of permissible bending stress is termed “tooth bending strength”.The results are in good agreement with other methods for the range, as indicated in the scope of ISO 6336-1.