Novel two-freedom-degree controllable main movement mechanism of mechanical shaper

Abstract

The invention belongs to the field of mechanism and mechanical manufacture, and particularly relates to a novel two-freedom-degree controllable main movement mechanism of a mechanical shaper. The main movement mechanism is characterized in that a ram of the main movement mechanism of the shaper is connected with a planar two-freedom-degree parallel mechanism through a connecting rod, the planar two-freedom-degree parallel mechanism is composed of two same movement branch chains and is of a symmetrical structure, and each branch chain adopts an RPR (R represents a revolute pair, P represents a prismatic pair) branch chain and is driven by a servo motor, wherein the revolute pair connected with a rack or the prismatic pair of each branch chain can be selected as a driving pair of each branch chain. Input of the servo motors is transmitted, combined and converted into single high-power output of the ram of the main movement mechanism of the shaper through the planar two-freedom-degree parallel mechanism. The planar two-freedom-degree parallel mechanism has the mechanical coordination function and can eliminate movement interference caused by input errors of the servo motors and reduce the control difficulty. The main movement mechanism has the advantages of controllability, flexibility and intelligentization.

Description

Technical field: [0001] The invention belongs to the field of mechanics and mechanical manufacturing, and in particular relates to a novel two-degree-of-freedom mechanical controllable main motion mechanism of a planer. Background technique: [0002] Bullhead planer can be applied to the planing process of horizontal plane, vertical plane, inclined plane, straight groove, V-shaped groove, dovetail groove and straight generatrix forming surface, so it is widely used in the field of machinery manufacturing. In order to improve the quality of the machined surface, the ram should be required to move at a constant speed, but the main movement mechanism of the mechanical bull planer generally adopts a combined mechanism composed of a swing guide mechanism and a swing rod slider mechanism connected in series. The motion is a non-uniform motion, which brings difficulties to further improve the quality of the processed surface. [0003] In order to solve the above problems, the mech...

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