mcb3083_lecture1(a).pdf
TRANSCRIPT
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Belt Drives
Lecture-1(a)
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CO# CO Description POs Addressed
CO1Design the basic mechanical components
in engineering systems.
PO1, PO2, PO3, PO4,
PO5
CO2
Apply materials selection in the design of
mechanical systems.
PO1, PO2, PO3, PO4,
PO5
CO3Apply Geometric Modeling & Simulation
Technique in mechanical design.
PO1, PO2, PO3, PO4,
PO5
CO4Develop engineering models of the
components / systems.
PO1, PO2, PO3, PO4,
PO5
CO5Apply failure modes and effects analysis
(FMEA) on the mechanical system design.
PO1, PO2, PO3, PO4,
PO5
CO6Apply fault tree analysis on the mechanical
system design.
PO1, PO2, PO3, PO4,
PO5
COURSE OUTCOMES
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1.1 Introduction
1.2 Types of Belts
1.3 Flat and Rounded Belt Drives
1.4 Worked Examples
CONTENT
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Types of Belts
Flat and
Rounded Belt
Drives
WorkedExamples
Introduction
Advantages Flexible Drives:
Transmits power over long distances
Absorbs shock and damps vibration
Flexibility in the location of shafts
Cheap as compared to gear drives, and
Low maintenance cost.
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Types of Belts
Main characteristics :
– Applicable for long center distances,
–
angular-velocity ratio between the driving and drivenshafts is neither constant nor exactly equal to the ratio of
the pulley diameters,
– idler or tension pulley can be used to avoid adjustments
in center distances.
Types of Belts
Flat and
Rounded Belt
Drives
WorkedExamples
Introduction
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Flat-belt Geometry:
Types of Belts
Flat and
Rounded Belt
Drives
WorkedExamples
Introduction
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Types of drives:
Non-reversing
Reversing
Reversing &
Open Belt
Types of Belts
Flat and
Rounded Belt
Drives
WorkedExamples
Introduction
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Flat Belt Drives
• Efficiency of flat-belt drive: about 98%,
• Efficiency of a V-belt drive: ranges from about 70 to 96%.
Length of the belt:
Types of Belts
Flat and
Rounded Belt
Drives
WorkedExamples
Introduction
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Flat Belt Drives (cont.)
Length of the belt:
Angle of wrap:
Types of Belts
Flat and
Rounded Belt
Drives
WorkedExamples
Introduction
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Thank You!