Watt Governor
The simplest form of a centrifugal governor is a Watt governor, as shown in Fig. 5.2. It is basically a conical pendulum with links attached to a sleeve of negligible…
Terms Used in Governors
The following terms used in governors are important from the subject point of view ; 1.Height of a governor. It is the vertical distance from the centre of the ball to…
Centrifugal Governors
The centrifugal governors are based on the balancing of centrifugal force on the rotating balls by an equal and opposite radial force, known as the controlling force. Centrifugal governor consists of…
Types of Governors
The governors may, broadly, be classified as 1. Centrifugal governors, and 2. Inertia governors. The centrifugal governors, may further be classified as follows :
Backlash
The gap between the non-drive face of the pinion tooth and the adjacent wheel tooth is known as backlash. Backlash is the error in motion that occurs when gears change direction. The…
Interference in Involute Gears
The tooth tip of the pinion will then undercut the tooth on the wheel at the root and damages part of the involute profile. This effect is known as interference, and…
Length of Arc of Contact
Arc of contact is the path traced by a point on the pitch circle from the beginning to the end of engagement of a given pair of teeth. In Figure,…
Length of Path of Contact
Consider a pinion driving wheel as shown in figure. When the pinion rotates in clockwise, the contact between a pair of involute teeth begins at K (on the near the base circle…
Systems of Gear Teeth
The following four systems of gear teeth are commonly used in practice: 1. 14 ½O Composite system 2. 14 ½O Full depth involute system 3. 20O Full depth involute system 4. 20O Stub involute system…
Advantages of Cycloidal gear teeth
1. Since the cycloidal teeth have wider flanks, therefore the cycloidal gears are stronger than the involute gears, for the same pitch. Due to this reason, the cycloidal teeth are preferred…
