A multi-axis linkage device based on parallel modules

Abstract

The invention relates to a multi-axis linkage device based on parallel modules and belongs to the technical field of numerical control device manufacturing. It includes a movable platform, a fixed platform and a U-shaped frame, as well as first, second and third branch chains connecting the fixed platform and the U-shaped frame, and a fourth branch chain connecting the movable platform and the fixed platform. ; It is characterized in that: the first, second and third branch chains are connected to the fixed platform and the U-shaped frame respectively, the U-shaped frame is connected to the moving platform through the rotating pair, and the fourth branch chain is connected to the fixed platform and the moving platform. connected to form a spatial parallel closed-loop mechanism that drives the platform through four inputs to achieve three movements and one degree of rotational freedom; the device may also include an annular guide rail or workbench, and the spatial parallel closed-loop mechanism is connected to the annular guide rail or workbench. The platform forms a hybrid device that can achieve up to five-axis linkage. This structural form can realize vertical and horizontal conversion and has high rotation output capacity.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing, and in particular relates to a multi-axis linkage device based on parallel modules that can be applied to the field of numerical control device manufacturing. Background technique [0002] A parallel mechanism refers to a closed-loop mechanism composed of two or more kinematic branch chains. Because of its compact structure and easy modularization, it is also called a parallel module. Compared with the traditional series mechanism, the parallel mechanism also has the following advantages: large carrying capacity per unit weight, small mass of moving parts, easy to realize high-speed movement, etc. In recent years, parallel mechanisms with fewer degrees of freedom (parallel mechanisms with less than six degrees of freedom) have attracted more and more attention from researchers because of their easy realization of larger workspaces (especially rotating workspaces) and simple kinematics. Fa...

AI Technical Summary

Problems solved by technology

In some successful application cases of hybrid devices based on parallel mechanisms with few degrees of freedom in the past: Tricept five-axis hybrid machining center achieves high rotational output through series A / C joint swing head, developed by German DSTechnology company based on Sprint Z3 The Ecospeed five-axis hybrid machining center with a three-degree-of-freedom parallel spindle head has a rotational output capability of about ±40°, and cannot achieve vertical and horizontal conversion.

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