Traditionally, the transmission device for cutter adopts gear mechanism combined with planar crank-rocker mechanism. In line with this drawback, this paper presents a practical spatial linkage mechanism. Through three-dimensional modeling and kinematic analysis, it obtains the equation of motion for output displacement, speed and acceleration. Besides, it gets the kinetic curve through emulation. The emulation results indicate that RCSR mechanism can realize smooth and stable output of cutter, laying a foundation for future dimensional synthesis of the mechanism.
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