机械设计基础之Toothed gearing齿轮传动(ppt 107页)

机械设计基础之Toothed gearing齿轮传动目录：
1.1 General considerations 概述
1.2 Materials, types of failure and design criteria 齿轮材料、失效形式和计算准则
1.3 Loads in cylindrical gearing 圆柱齿轮传动载荷计算
1.4 Strength of spur cylindrical gearing直齿圆柱齿轮传动强度计算
1.5 Strength of helical cylindrical gearing斜齿圆柱齿轮传动强度计算 Toothed gearing design example齿轮传动设计实例
1.6 Straight bevel gearing直齿圆锥齿轮传动

机械设计基础之Toothed gearing齿轮传动内容提要：
齿轮材料、失效形式和计算准则：
Materials of gears 齿轮材料
Types of failures  失效形式
Design criteria 计算准则
Types of failure 失效形式：
Tooth breakage轮齿折断
Failure of tooth surface layers 齿面损伤：
Fatigue pitting, seizing, abrasive
wear and plastic flow of material
点蚀、胶合、磨损和塑性变形
Close gearing闭式齿轮传动： The principal types of failure are pitting, tooth breakage and seizing of  the teeth. And seizing of  the teeth occurs under heavy load and calculation in checking for the possibility of tooth seizure is not effective. Hence, only calculations of the contacting fatigue strength  and bending fatigue strength  are  carried out.以点蚀、轮齿折断和胶合失效形式为主，其中胶合发生于重载，而且计算方法不成熟，所以一般只进行齿面接触疲劳强度和齿根弯曲疲劳强度计算。