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By:
AlirezaAlireza SafikhaniSafikhani
Design of Machine Elements
6
Shafts …
٢ Shaft Design Issues
٣
Shaft arrangement
٤
Fundamental Problem in Shaft Design
٥
Interference Fits Standards
٦
Limits and Fits (Metric Nomenclature)
٧
definition
٨
Tolerance Grade Numbers
٩
Tolerance Grade Numbers
١٠
Tolerance Grades Table
١١
Fundamental Deviations
١٢
Lower and Upper Deviations
١٣
Preferred Hole Basis Fits
١٤
Preferred Shaft Basis Fits
١٥
Description of Preferred Fits
١٦
American National Standard Preferred Hole Basis Metric Clearance Fits
١٧
Loose Running Fit: Example
١٨
Loose Running Fit (Example Continued)
١٩
Force Fit (Example)
٢٠
Force Fit (Example Continued)
٢١
Relation of Machining Processes to Tolerance Grades
٢٢
Keys and Keyseats
٢٣
Types of Keyseats
٢٤
Keyway Fabrication Methods
٢٥
Keyway type and fatigue stress concentration factor Kf
٢٦
Shaft keys
٢٧
Shaft keys
٢٨
Shaft keys
٢٩
Square and Rectangular Parallel Keys
٣٠
Square and Rectangular Key Geometry
٣١
Tapered Keys
٣٢
Gib Head Keys
٣٣
Woodruff Keys
٣٤
Circular (Pin) Keys
٣٥
Set Screws
٣٦
Set Screws
٣٧
٣٨
Representative Holding Power Values
٣٩
Tapered Bushings
٤٠
Taper and screw
٤١
Shrink fit disk !Shrink fit disk !
٤٢
٤٣
٤٤
٤٥
٤٦
٤٧
٤٨
٤٩
٥٠
Universal joint
٥١
Universal joint
٥٢
Stress Analysis of Parallel Keys
٥٣
Shear Stress Analysis of Square and Rectangular Parallel Keys
٥٤
Required Key Length: Shear
٥٥
Bearing Stress: Square and Rectangular Parallel Keys
٥٦
Comparison of Shear and Bearing Length Equations
٥٧
Standard Keys
٥٨
Lengths
٥٩
Stress Analysis of Woodruff Keys
٦٠
Shear Analysis of Woodruff Keys
٦١
British Standard Woodruff Keys and Keyways BS 6: Part 1: 1958
٦٢
Shaft pins
٦٣
Pin Diameter
٦٤
Shear Pins
٦٥
RETAINING RINGS
٦٦
Lock Nut
٦٧
Locking Nut
٦٨
American National Standard Unhardened Ground Dowel Pins
٦٩
American National Standard Clevis Pins ANSI B18.8.1-1972 (R1994)
٧٠
American National Standard Taper Pins ANSI/ASME B18.8.2-1995
٧١
American National Standard Slotted Type Spring Pins
٧٢
American National Standard Cotter Pins ANSI B18.8.1-1972 (R1994)
٧٣
Splines
٧٤
٧٥
٧٦
٧٧
6895 k Pa6895 k Pa
٧٨
٧٩
٨٠
Torque Capacity
٨١
Torque Capacity
٨٢
Involute Splines
٨٣
٨٤
٨٥
Splined Fittings
٨٦
٨٧
Ball screw and splined linear bearing
٨٨
Ball Screw
٨٩
٩٠
Application off Spacer
٩١
RETAINING RINGS
٩٢
RETAINING RINGS
٩٣
RETAINING RINGS
٩٤
٩٥
٩٦
٩٧
٩٨
EXTERNAL RETAINING RINGS
٩٩
Reduced Cross Section Retaining Rings
١٠٠
American National Standard Metric Tapered Retaining Rings
١٠١
Performance data
١٠٢
١٠٣
Shaft Design
١٠٤
١٠٥
١٠٦
Geometric constrains
١٠٧
١٠٨
Distortion limits
١٠٩
Distortion limits
١١٠
Distortion limits
١١١
Distortion limits
١١٢
Torsion
١١٣
Modal Analysis by FEM softwareModal Analysis by FEM software
١١٤
Strength constrains: Typical shaft loading
١١٥
Common Shaft Loading Mechanisms
١١٦
Spur Gear Loads
١١٧
Direction of forces
١١٨
Belt Drive Loads
١١٩
Belt Drive Loads (Bending Force)
١٢٠
Chain Drive Loads
١٢١
Bending Stresses Due to Stationary Loads
١٢٢
Shaft Stress Equations (Bending and Torsion Only)
١٢٣
Yielding in Ductile Material (No Stress Concentration)
١٢٤
Static Loading Minimum Diameter
١٢٥
Shaft Stress Equations (Bending, Axial, and Torsional Loading)
١٢٦
Fatigue Analysis of Shafts
١٢٧
Shaft von Mises Stress Equation
١٢٨
Effective Alternating and Mean Stresses
١٢٩
ANSI Standard Fatigue Curve
١٣٠
ASME Elliptic Fatigue Equation
١٣١
Minimum Diameter Equation (Bending and Torsion Only)
١٣٢
Minimum Diameter Equation (Bending and Torsion Only)
١٣٣
Soderberg
١٣٤
Soderberg
١٣٥
Soderberg
١٣٦
Hollow Shafts
١٣٧
Summary of Shaft Stress Analysis Methodology
١٣٨
Design Detail Needed to Specify a Shaft
١٣٩