Employee
“Tilt circle” is a term used to talk about the mechanics of gears. It is the imaginary circle that passes through the points where two gears interlock. Knowing the diameter of a gear’s starting circle is important when calculating various measurements related to gear mechanics.
Two gears can fit together in many ways. A gear can turn inside another gear, outside another gear, or even perpendicular to another gear. Interlocking gears transfer power from one part of the machine to another. To function properly, the system must be designed so that the gears are the proper size and diameter to transfer the correct amount of power at the desired speed.
To ensure that force is transferred as efficiently as possible, gear systems must be carefully designed so that the teeth of one gear turn the teeth of the next. The diameter of the pitch circle is necessary to make some of these calculations. When two gears do mesh, the pitch circles of the two gears must be tangent to each other.
The partial circle can be broken down into other important components. The circular pitch, or pitch, is the distance between the teeth of a gear. For two gears to mesh, the distance from one tooth along the pitch circle to the next tooth must be the same on both gears. Otherwise they won’t sync when they turn. The area of a gear tooth between the pitch circle and the top of the gear tooth is called the tail, and the area from the pitch circle to the bottom of the gear tooth is called the tail.
After drawing the partial circle, the pitch circle diameter and pitch circle radius of each gear can be determined. The ratio of the diameter of the vertical circle of the first gear to the partial diameter of the circle of the second gear must be equal to the ratio of the number of teeth of the first gear to the number of teeth of the second gear. Therefore, by knowing the ratio of the two pitch circle diameters, the engineer also knows how many teeth each gear should have per square inch or square centimeter. The ratio of the pitch circle diameters of the gears is also equal to the speed ratio, which is the ratio of the rotational speed of the input gear to the rotational speed of the output gear. Therefore, knowing the diameter of an initial gear circle is vital in determining whether one gear will work with the next in a gear system.