#263 Basic Elements of Automation Clever Mechanisms: Boost Mechanism -2
In this volume, we will look at an example of booster mechanisms for the press machine based on the piston-crank model.
The figure [a] below is a schematic view of the press machine. An eccentric disk is used for "Crank OA". When the center of this disk (center of gravity) comes below the center of rotation O, the weight of this disk acts on the presswork.
In the figure [b], the press machine [a] is expressed in the skeleton method. If we compare the vector components at "Joint A" in [b] and those at the pressing point "B", we can see that a booster action can be obtained from them. Using an eccentric disk amplifies "Tangential Force F0" acting on "Joint A". Then, the piston changes its force direction to vertical and forms "Press Force FP". In this figure, "Press Force FP" is approximately 1.4 times greater than "Tangential Force F0".
In the next volume, we will consider some application examples of the boost mechanisms using the power of leverage.
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