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In the non-servo motor type automatic tool changer (ATC), the rotational transmission mechanism (RTM), which converts the rotary motion with specific rotational ratio, is important. This paper presents a new design for RTM with dual four-bar linkages for the non-servo motor type ATC. This RTM is entirely different from the mechanism using single four-bar linkage, in which the motion is intermittent...
This paper presents a new design methodology for crank-rocker four-bar linkages based on differential objective functions. Firstly, to avoid obtaining a mechanism with an unintended trajectory shape, we classified the trajectory of the linkage into four types of shapes. Two-step optimization for a specific shape type is proposed. In the first step, the shape of the trajectory is obtained by minimizing...
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