上海交通大学：《Design & Manufacturing II and Project》课程教学资源（讲义）Lecture 4 Joint Fasteners

ME350 Mechanical Design and Manufacturing ll ME350— Joints:Threaded Fasteners 1

ME 350 1 ME 350 Mechanical Design and Manufacturing II Joints: Threaded Fasteners

Lectures ME350= Power/Energy Conversion Power/Energy (Electrical Motors) Transmission (Gears, Belt Drives,Cam Rower Screws）) Joints Transmission (Fasteners, Support Structural Connectors) (Bearings) Support (Frames) Tools Statics,Dynamics, Stress Analysis,etc. 2

ME 350 2 Lectures Power/Energy Conversion (Electrical Motors) Transmission Support (Bearings) Joints (Fasteners, Connectors) Structural Support (Frames) Tools Statics, Dynamics, Stress Analysis, etc. Power/Energy Transmission (Gears, Belt Drives,Cam Power Screws)

Types of Connectors ME350— .Fastener or connector >Any device used to connect or join two or more components ·Types >Bolt(螺栓) Threaded fastener designed to pass through holes in the mating members and to be secured by tightening a nut from the end opposite the head of the bolt. 3

ME 350 3 Types of Connectors •Fastener or connector ¾Any device used to connect or join two or more components •Types ¾Bolt(螺栓 ) ⁼ Threaded fastener designed to pass through holes in the mating members and to be secured by tightening a nut from the end opposite the head of the bolt

ME350= 4

ME 350 4

Types of Connectors ME350— >Screws(螺钉) Threaded fastener designed to be inserted through a hole in one member to be joined and into a threaded hole in a mating member. >Set Screws(定位螺钉) Headless fasteners designed to bear directly on mating part locking it into place.Depends on compression. 5

ME 350 5 ¾Screws(螺钉) ⁼ Threaded fastener designed to be inserted through a hole in one member to be joined and into a threaded hole in a mating member. ¾Set Screws(定位螺钉) • Headless fasteners designed to bear directly on mating part locking it into place. Depends on compression. Types of Connectors

Types of Connectors ME350- >Stud(螺柱) Fastener similar to a bolt.It is attached permanently to a part of one member to be joined.The mating member is then placed over the stud and a nut is tightened to clamp members 6

ME 350 6 Types of Connectors ¾Stud (螺柱 ) ⁼ Fastener similar to a bolt. It is attached permanently to a part of one member to be joined. The mating member is then placed over the stud and a nut is tightened to clamp members

Bolt,Machine Screw,Stud2 ME350= Examples of a bolt,machine screw and a stud (b)Machine (cap)screw (c)Stud (a)Bolt,washer,and nut

ME 350 7 Bolt, Machine Screw, Stud 2 Examples of a bolt, machine screw and a stud

Set Screw1 ME350= Example of set screws with different head and point styles applied to hold a collar on a shaft(轴环). Shaft Collar (a)Headless. (b)Square head.(e)Hex socket (d)Fluted socket (e)Full-dog (f)Half-dog fat point cup point head.cone head.dual point point point point Figure 18-12 Set Screws with Different Head and Point Styles Applied to Hold a Collar on a Shaft(R.P.Hoelscher,et al.,Graphics for Engineers,New York: John Wiley Sons,1968) Set screws 8

ME 350 8 Set Screw1 Example of set screws with different head and point styles applied to hold a collar on a shaft(轴环)

ME350- 的 9

ME 350 9

QUESTION for discussion ME350= 1 What is the difference among the Bolt,Screws and the Stud 2 Can you please list some examples for the above in your daily life? 10

ME 350 10 QUESTION for discussion 1 What is the difference among the Bolt , Screws and the Stud ? 2 Can you please list some examples for the above in your daily life?