Date post: | 16-Dec-2015 |
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Machine Element Design
Design of Belts and Chains
Design of Classical V-belts
Classical V belts cross sections
Design of V-belts Calculation of design horse power
Design horse power=trainsmitted horse power(given)*S.F
Selection of belt type Calculation of pulleys dimensions and center
distance Calculation of horse power rating according to
belt type Correcting the horse power rating Calculating the number of required belt rows
Table of Service factor for V-belts
Table of Service factor for V-belts(continued)
Selection of Classical V-belts cross section
Classical V-belt sheave and groove dimensions
Classical V-belt horse power rating formulas
Speed Ratio Correction Factor(Ksr)
Classical V-belts datum Length
Length Correction Factor
Arc of contact Correction Factor
Design of chains and Sprockets
Roller chain Parts
Sprocket Dimensions A Sprocket has three
diameters: Inner diameter Outer diameter Pitch diameter=P/sin(180/N)
Sprocket Parameters: Pitch(P) Number of Teeth(N)
chain parameter Chain pitch(P)
Types of Sprockets
Selection of Service factor
Design horse power=trainsmitted horse power(given)*S.F
Selection of Sprocket Type and Pitch based on horse power and speed of small sprocket
Roller Chain Dimensions(according to selected pitch)
Calculation of Center Distance and number of chain links
11 2 2 1
/ 30 50
( ) ( )/ 2 cos( ), sin ( )
2 180 2
P P
P P
C C P C
N N N N D dL L P C
C
C: center distance P: chain Pitch L:chain length N1: Number of small sprocket Teeth
N2: Number of largesprocket Teeth
dp: Pitch diameter of small sprocket
Dp: Pitch diameter of large sprocket