Non Circular Gears:- Noncircular gears generally cost more than competitive components such as linkages and cams. But with the development of modern production methods, such as the computer- controlled gear shaper, cost has gone down considerably. Also, in comparison with linkages, non-circular gears are more compact and balanced and they can be more easily balanced. These are important considerations in high-speed machinery. Furthermore, the gears can produce continuous, unidirectional cyclic motion, a point in their favor when compared with cams. The disadvantage of cams is that they offer only reciprocating motion. Applications:- 1.Where only an over-all change in angular velocity of the driven member is required such machines as printing presses, planers, shears, winding machines, and automatic-feed machines. 2.Where precise, nonlinear functions must be generated, as in mechanical computing machines for extracting roots of numbers, raising numbers to any power, or generating trigonometric and logarithmic functions. For more join Mechanical Engineers Rocks.
Posted on: Sun, 16 Mar 2014 06:30:01 +0000
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