Keys(键)&Keyways(键槽) ©DIFFLOCK.com Keys are the most common of torque- transmitting shaft-to-hub connections The grooves in the shaft and hub into which the key fits are called keyways or keyseats 6 Introduction to Engineering
6 Introduction to Engineering Keys（键） & Keyways（键槽） Keys are the most common of torquetransmitting shaft-to-hub connections The grooves in the shaft and hub into which the key fits are called keyways or keyseats
Pin(销) A simple attachment for transmitting relatively light loads is provided by pins Pins provide a relatively inexpensive means of transmitting both axial and circumferential loads Straight Tapered split tubular spring 圆柱销 圆锥销 开口管状弹簧 (a) (c) Introduction to Engineering
7 Introduction to Engineering Pin （销） A simple attachment for transmitting relatively light loads is provided by pins Pins provide a relatively inexpensive means of transmitting both axial and circumferential loads Straight Tapered split tubular spring 圆柱销 圆锥销 开口管状弹簧
Setscrew (紧钉螺钉 >To prevent relative motion of components and shafts >Two screws are commonly used,spaced 90°apart >Inexpensive and sometimes adequate for relatively light loads >Sometimes used in Rotating Shaft and Pulleys with Projecting Key and Set Screw conjunction with keys Introduction to Engineering
8 Introduction to Engineering Setscrew（紧钉螺钉） To prevent relative motion of components and shafts Two screws are commonly used, spaced 90°apart Inexpensive and sometimes adequate for relatively light loads Sometimes used in conjunction with keys Rotating Shaft and Pulleys with Projecting Key and Set Screw
Retaining rings(卡圈) >Retaining rings commonly called snap rings >Axially positioning and retaining hubs and bearings onto shafts >Requiring grooves on the shaft that weaken the shaft >Should be located where stresses are low Introduction to Engineering
9 Introduction to Engineering Retaining rings（卡圈） Retaining rings commonly called snap rings Axially positioning and retaining hubs and bearings onto shafts Requiring grooves on the shaft that weaken the shaft Should be located where stresses are low
Front Working Angle Rear Working Angle Couplings(联轴器) 10 Introduction to Engineering
10 Introduction to Engineering Couplings（联轴器）