Three-freedom-degree parallel mechanism suitable for platform movement

Abstract

The invention relates to a three-freedom-degree parallel mechanism suitable for platform movement. The three-freedom-degree parallel mechanism is composed of a fixed platform, a moving platform and three moving branches with identical structures and connected with the two platforms; wherein, each moving branch is a parallelogram connecting rod sliding block mechanism which is composed of three connecting rods, two sliding rods and two sliding blocks, and each moving branch is connected with the fixed platform and the moving platform through two rotating pairs respectively; and each of the fixed platform and the moving platform adopts a regular triangle structure, and the fact that three moving branches are symmetrically distributed at the peak of the regular triangle. The three-freedom-degree parallel mechanism adopts the symmetrical structure, the moving platform can move transversely in the X, Y and Z directions, the three-freedom-degree parallel mechanism is suitable for various mechanical structures needing to realize platform movement, and therefore, a broad application prospect is achieved; and in addition, the mechanism can effectively reduce occupancy for space volume, reduce manufacturing and maintenance costs, and maintain balancing in the movement process.

Description

technical field [0001] The invention relates to the fields of mechanics and robotics, in particular to a three-degree-of-freedom parallel mechanism suitable for platform movement. Background technique [0002] Parallel mechanisms with three degrees of freedom of movement are widely used in the mechanical industry. In the field of machinery industry, it is often necessary to realize the translational movement of the motion platform along the X, Y, and Z directions. To complete the three-degree-of-freedom translational movement, today's mechanisms are generally realized by a screw slider mechanism arranged in three directions. However, the volume of space occupied by such a mechanism is equivalent to the product of the range of motion in the three directions of X, Y, and Z, so the volume of space occupied is relatively large, which is not conducive to the miniaturization of mechanical equipment. Contents of the invention [0003] The purpose of the present invention is to ...

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Problems solved by technology

However, the volume of space occupied by such a mechanism is equivalent to the product of the range of motion in the three directions of X, Y, and Z, so the volume of space occupied is relatively large, which is not conducive to the miniaturization of mechanical equipment

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