【20160316】Kinematic Diagrams
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In analyzing the motion of a machine, it is often difficult to visualize the movementof the components in a full assembly drawing.4 ?, @1 v/ v6 B" T% b
运动图解提供了一种抽象的表达。可视性较实际工件更好。" R5 ^! ] N8 X4 D7 l+ k9 u( H
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It is easier to represent the parts in skeleton form so that only the dimensions thatinfluence the motion of the mechanism are shown. These “stripped-down” sketches of mechanisms are often referred to as kinematicdiagrams. The purpose of these diagrams is similar to electrical circuit schematic or piping diagrams in that they represent variables that affect the primary function of the mechanism. Table 1.1 shows typical conventions used in creating kinematic diagrams. A kinematic diagram should be drawn to a scale proportional to the actual mechanism. For convenient reference, the links are numbered, starting with the frame as link number 1. To avoid confusion, the joints should be lettered.
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