Shafts and Associated Parts 轴和轴系零件 Introduction to Engineering
1 Introduction to Engineering Shafts and Associated Parts 轴和轴系零件
Shaft >A relatively long component >Usually with round cross section >Usually rotates and transmits power >Used to put one or more components such as gears, pulleys(皮带轮)，and cams) together by means of pins,keys etc. Introduction to Engineering
2 Introduction to Engineering Shaft A relatively long component Usually with round cross section Usually rotates and transmits power Used to put one or more components ( such as gears, pulleys（皮带轮）, and cams) together by means of pins, keys, etc
>A shaft can also have a non-round cross section, and it need not rotate >An axle(心轴)isa shaft,either stationary or rotating,not subjected to torsion load >A short rotating shaft is often called a spindle 轴) Introduction to Engineering
3 Introduction to Engineering A shaft can also have a non-round cross section, and it need not rotate An axle （心轴）is a shaft, either stationary or rotating, not subjected to torsion load A short rotating shaft is often called a spindle（主 轴）
Elements Attached to a Shaft Frame Frame Sheave Bearing Shaft Gear Pulley Shoulders(轴肩)provide axial positioning location Introduction to Engineering
4 Introduction to Engineering Elements Attached to a Shaft Shoulders（轴肩） provide axial positioning location
Mounting Parts onto Rotating Shafts >Parts are made separately and then mounted onto the shaft >The portion of the mounted i member in contact with the shaft is the hub(毂盘) >The hub is attached to the shaft in a variety of ways Introduction to Engineering
5 Introduction to Engineering Mounting Parts onto Rotating Shafts Parts are made separately and then mounted onto the shaft The portion of the mounted member in contact with the shaft is the hub（毂盘） The hub is attached to the shaft in a variety of ways