SPUR GEARS

• Introduction to gears - nomenclature, speed and torque ratios of a pair of gears
• Epicyclic gear trains - what they are; their speed and torque ratios
• A necessity for correct meshing - conjugate tooth action
• The involute - what it is and why it's a suitable shape for gear teeth
• Manufacture by gear tooth generation; profile shift and its effect on tooth shape
• Gear meshing and the effect of centre distance; meshing animation; contact ratio
• Gear failure and reliability: the damaging tooth force
• Resistance to fatigue failure - bending strength and pitting resistance
• Application of fatigue theory to analysis, synthesis and to periodic duty.

• Appendices (This is a .pdf file requiring Acrobat Reader as a browser helper)
  • A : Continued fractions and Padé approximations
  • B : Geometry of the involute gear tooth
• Bibliography
• Problems
• Solutions

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