From Standard Handbook of Machine Design, 3rd Edition
Chapter 4: CAM MECHANISMS
- Table 4.1: Standard Trigonometric Follower Motions
- Table 4.2: Data of Rise Motion Used for Calculations of Return Portion of Cam Profile
- Table 4.3: Data of First Half of Rise Motion Used for Calculations of Second Half
- Table 4.4: Basic Equations for a Constant-Breadth Circular-Arc Cam, Using A = R 1 ? ?
- Table 4.5: Weights Used in the Improved Finite-Difference Method
Chapter 5: GEAR TRAINS
- Table 5.1: Solution by Tabulation
- Table 5.2: Characteristic Equations for 12 Planetary Trains of Fig. 5.7
- Table 5.3: Solution of Type A Train
- Table 5.4: Solution of Type I Train
Chapter 6: SPRINGS
- Table 6.1: Typical Properties of Common Spring Materials
- Table 6.2: Typical Heat Treatments for Springs after Forming
- Table 6.3: Ranking of Relative Costs of Common Spring Wires
- Table 6.4: Formability of Annealed Spring Steels
- Table 6.5: Typical Properties of Spring-Tempered Alloy Strip
- Table 6.6: Maximum Allowable Torsional Stresses for Helical Compression Springs in Static Applications
- Table 6.7: Maximum Allowable Torsional Stress for Round-Wire Helical Compression Springs in Cyclic Applications
- Table 6.8: Free-Length Tolerances of Squared and Ground Helical Compression Springs
- Table 6.9: Coil Diameter Tolerances of Helical Compression and Extension Springs
- Table 6.10: Load Tolerances of Helical Compression Springs
- Table 6.11: Maximum Allowable Stresses ( Corrected) for Helical Extension Springs in Static Applications
- Table 6.12: Maximum Allowable Stresses for ASTM A228 and Type 302 Stainless-Steel Helical Extension Springs in Cyclic Applications
- Table 6.13: Commercial Free-Length Tolerances for Helical Extension Springs with Initial Tension
- Table 6.14: Tolerances on...
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Compression springs are the most recognizable of spring and are intended to oppose compaction in the direction of the axis. The spring is extended at rest, shorten and store energy when a load is applied, and is one most efficient energy storage devices available. Traditionally, they are wound and uniform in pitch and diameter, but these traits vary considerably today.
Helically wound to oppose resistant forces, extension springs have consistent mechanical energy to return to its no-load, compressed position. The ends of the spring are attached to components intended to move apart, with the extension spring providing a reliable return force.
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