| Involute Cog |
 |
|
An involute cog is constructed such that constant angular velocity (rotation rate) is maintained throughout gear contact. This constant angular velocity meshing is what is known as conjugate action. Theoretically, any gear shape can be decided upon for one gear, and the meshing gear teeth can be designed such that conjugate action is attained. However, if both gears have involute cogs, then conjugate action is attained and all gear cog shapes are standardized. An involute cog profile can be constructed by pinning a string to a wheel and then unravelling it as shown in the following figure.  |
| Nomenclature of Common Gears |
|
Some intermesh terms of common gears are illustrated in the following two figures.
  |
| Nomenclature of Bevel Gears |
|
|
Some terms commonly used for bevel gears are annotated in the following figure.  |
| Design Home | |
 |
Gears |
 |
Introduction |
|
History |
|
Nomenclature |
|
Compound Train |
|
Epicyclic Gear Train |
|
Automobile Differential |
|
Resources |
|
Bibliography |
Glossary
Selecting the Right 3D Printer
Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.
Negotiate Your Salary
Learn the best principles to negotiate the salary you deserve!
STEM Career Outlook
Wages, employment opportunities, and growth projections for STEM jobs.
CNC Machining Design Guide
Optimize your designs, reduce machining time, and lower your costs.