Abstract
Aiming at the current problems of small working space and the high cost of erection of parallel structure FDM-3D printer, a 3-PRRR parallel mechanism with a common line of branch chain moving sub is proposed and planned to be used in 3D printing equipment. First, the degrees of freedom of the 3-PRRR parallel mechanism is analyzed based on the spiral theory, and the positive and negative solutions of the position of the mechanism are established by the vector method; on this basis, the working space of the mechanism is analyzed using the Monte Carlo method; finally, the mechanism is specifically applied to the FDM- 3D printing device.
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