14-10-2016, 02:19 PM
Cars, clocks, and can openers, along with many other devices, use gears in their mechanisms to transmit power through rotation. Gears are a type of circular mechanical device with teeth that mesh to transmit rotation across axes, and they are a very valuable mechanism to know about as their applications range far and wide. In this Instructable I'll go over some basic gear concepts and interesting mechanisms, and hopefully you'll be able to design your own gear systems and make stuff like this!
A gear is a wheel with teeth around its circumference. Gears are usually found in sets of two or more, used to transmit rotation from the axis of one gear to the axis of another. The teeth of a gear one one axis mesh with the teeth of a gear on another, thus creating a relationship between the rotation of the two axes. When one axis is spun, the other will too. Two gears of different sizes will make their two axes spin at different speeds, which you'll learn about, along with different types of gears and places they're used.
Gears are mechanisms that mesh together via teeth and are used to transmit rotary motion from one shaft to another. Gears are defined by two important items: radius and number of teeth. They are typically mounted, or connected to other parts, via a shaft or base.
1. Radius: The gear radius is defined differently depending on the particular section of the gear being discussed. The two most relevant measurements, however, are the root radius and the addendum radius. The root radius is the distance from the center of the gear to the base of the teeth while the addendum radius (also called the "pitch" radius) is the distance from the center of the gear to the outside of the teeth.
A gear is a wheel with teeth around its circumference. Gears are usually found in sets of two or more, used to transmit rotation from the axis of one gear to the axis of another. The teeth of a gear one one axis mesh with the teeth of a gear on another, thus creating a relationship between the rotation of the two axes. When one axis is spun, the other will too. Two gears of different sizes will make their two axes spin at different speeds, which you'll learn about, along with different types of gears and places they're used.
Gears are mechanisms that mesh together via teeth and are used to transmit rotary motion from one shaft to another. Gears are defined by two important items: radius and number of teeth. They are typically mounted, or connected to other parts, via a shaft or base.
1. Radius: The gear radius is defined differently depending on the particular section of the gear being discussed. The two most relevant measurements, however, are the root radius and the addendum radius. The root radius is the distance from the center of the gear to the base of the teeth while the addendum radius (also called the "pitch" radius) is the distance from the center of the gear to the outside of the teeth.