Machine design slide 11

Machine design slide 11 - ENGR 3220 Machine Design ENGR...

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Unformatted text preview: ENGR 3220 Machine Design ENGR 3220 Machine Design Week 6, Lecture 2 Week 6, Lecture 2 Shaft Design Shaft Design I n machiner y, the gener al ter m shaft r efer s to a member , usually of cir cular cr oss-section, which suppor ts gear s, spr ockets, wheels, r otor s, etc., and which is subjected to tor sion and to tr ansver se or axial loads acting singly or in combination. An axle is a non-r otating member that suppor ts wheels, pulleys, and car r ies no tor que. A spindle is a shor t shaft. Ter ms such as lineshaft, headshaft, stub shaft, tr ansmission shaft, counter shaft, and flexible shaft ar e names associated with special usage. Definitions Definitions H ead or stud shaft : A shaft integral with a motor or prime mover Line shaft : A shaft used to distribute power from one prime mover to many machines Jack shaft : A short shaft used for power transmission as an auxiliary shaft between two other shafts (counter shaft, back shaft) 1. 1. Deflection and Rigidity Deflection and Rigidity (a) Bending deflection (b) Torsional deflection (c) Slope at bearings and shaft supported elements (d) Shear deflection due to transverse loading of shorter shafts 1. 1. Str ess and Str ength Str ess and Str ength (a) Static Strength (b) Fatigue Strength (c) Reliability Consider ations for Shaft Consider ations for Shaft Design Design The geometr y of a shaft is that of a stepped cylinder bending. Gear s, bear ings, and pulleys must always be accur ately positioned Common Tor que Tr ansfer Elements Common Tor que Tr ansfer Elements Keys Splines Setscr ews Pins Pr ess or shr ink fits Taper ed fits Consider ations for Shaft Consider ations for Shaft Design Design Common Types of Shaft Keys Common Types of Shaft Keys Common Types of Shaft Keys Common Types of Shaft Keys Common Types of Shaft Keys Common Types of Shaft Keys Common Types of Shaft Keys Common Types of Shaft Keys Common Types of Retaining or Common Types of Retaining or Snap Rings Snap Rings Common Types of Splines Common Types of Splines Rigid Shaft Coupling Rigid Shaft Coupling Example...
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This note was uploaded on 04/16/2011 for the course ENGR 3220 taught by Professor Turro during the Spring '11 term at UOIT.

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Machine design slide 11 - ENGR 3220 Machine Design ENGR...

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