Motion of the Follower
Cam follower systems are designed to achieve a desired oscillatory motion. Appropriate displacement patterns are to be selected for this purpose, before designing the cam surface. The cam is assumed…
Terms Used in Radial Cams
Fig.3.7 Pressure angle: It is the angle between the direction of the follower motion and a normal tothe pitch curve. This angle is very important in designing a cam profile. If…
Classification of Cams
Cams can be classified based on their physical shape. a) Disk or plate cam (Fig. 3.4 a and b): The disk (or plate) cam has an irregular contourto impart a…
Exercise Problems
1) An engine, running at 150 r.p.m., drives a line shaft by means of a belt. The engine pulley is 750 mm diameter and the pulley on the line shaft…
Centrifugal Pump
A centrifugal pump has an impeller on the inside of a casing. Liquids are forced into the centre or “eye” of the impeller. The impeller rotates and the rotational force…
Maximum Tension in the Belt
While the centrifugal tension σcfσcf acts equally throughout the belt during operation and the quasi-static tensions σtσt and σsσs are only present to this extent in the corresponding belt sections, the bending stress acts only during…
Centrifugal Tension
Since the belt continuously runs over the pulleys, therefore, some centrifugal force is caused, whose effect is to increase the tension on both, tight as well as the slack sides.…
Determination of Angle of Contact
When the two pulleys of different diameters are connected by means of an open belt as shown in Fig. (a), then the angle of contact or lap (q) at the…
