GB/T 3480-1997渐开线圆柱齿轮承载能力计算方法.pdf

21.200 JICS17 暑目 中 华 人 民 共 和 国 国 家 标 准 cB/T3480一1997 eqvISO6336-1一6336-3:1996 渐开线圆柱齿轮承载能力计算方法 Calculationmethodsofloadcapacity forinvolutecylindricalgears 1997一12一30发布 1998一07一01实施 国 家 技 刁险 监 督 局 发布 GB/T3480一 1997 目 次 前言 ·············································································································…… 1 范围 2 引用标准 ··································································································…… 3 概述 ·······························...·································································，······一· 3.1 可靠性与安全系数 ········，···············。············································…… ’····…… 3.2 主要代号 ····，····················································· 3.3 系数的分类和计算顺序 4 基本计算公式 4.1 齿面接触强度核算 4.2 轮齿弯曲强度核算 5 名义切向力 F 6 修正载荷的系数和轮齿刚度 6.1 使用 系数 KN 9 6.2 动载系数 K 0 1 6.3 齿向载荷分布系数KHo,KFP 6 1 6,4 齿间载荷分配系数 KHa,KFo 邪 6.5 轮齿刚度 c,cr······················，·······························································…… 9 2 7 修 正计算应力 的系数 3 1 7.1 计算接 触应力 的系数 ······································，，······································…… 3 l 7.2 计算弯曲应力的系数 3 7 8 轮齿疲劳强度及其修正 系数 5 5 8.1 试验齿轮的疲劳极 限 ‘r-aFfm···········…… 5 5 8.2 寿命系数ZNT,YNT