Redundant drive five degrees of freedom parallel machine tool with large rotation angle

Abstract

The invention relates to a redundant drive five degrees of freedom parallel machine tool with a large rotation angle. The redundant drive five degrees of freedom parallel machine tool with the large rotation angle includes a fixed platform, a movable platform for installing a main shaft head and a first driving branch, a second driving branch, a third driving branch and a fourth driving branch forconnecting the fixed platform and the movable platform, the structures of the first driving branch and the second driving branch are similar, and the first driving branch includes a hooke hinge, a servo driving unit, a revolute pair and a compound sphere hinge; the third driving branch includes a hooke hinge, a servo driving unit and a compound sphere hinge, the fourth driving branch includes a revolute pair, a servo driving unit, a hooke hinge and a revolute pair, and the movable platform of a machine tool and the four driving branches are hinged to form a space closed-cycle parallel mechanism; and the three-dimensional translation and the two-dimensional rotation of the space can be achieved by controlling six servo motors to drive the four branches. The redundant drive five degrees offreedom parallel machine tool with the large rotation angle has the advantages that the branch structures are simple and compact, the orientation workspace is large, the flexibility is high, the rigidity is large, and the singular configuration can be prevented, and can be used for high-speed, high-precision and efficiency machining for free-form surface in complex space.

Description

technical field [0001] The invention belongs to the technical field of industrial manufacturing of numerically controlled machine tools, and in particular relates to a five-degree-of-freedom parallel machine tool capable of high-speed, high-precision, and high-efficiency machining of space-complex free-form surface components. Background technique [0002] The manufacturing industry is an important symbol of the country's comprehensive national strength and technological development. With the continuous development of industrial manufacturing technology, the processing of curved surfaces of some large and complex structural parts in space is becoming more and more refined. Large working space, but due to its structural characteristics, the machine tool has the disadvantages of error accumulation, poor rigidity, and low machining accuracy. Therefore, it is difficult for traditional CNC machine tools to guarantee the processing quality of large-sized and complex-shaped parts. ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a redundantly driven five-degree-of-freedom parallel machine tool with a large rotation angle as the main mechanism of the body, which is connected in series with heavy-duty high-speed linear guide rails with two to three moving degrees of freedom to form a seven-axis or eight-axis high-speed five-linkage high-end hybrid machine tool. Linked CNC machine tools can solve the key common basic problems of low processing efficiency of large-scale heterogeneous and complex free-form surfaces that need to be solved urgently, overcome the core key technical problems in the development of the manufacturing industry, and provide technical support for the innovative development of the manufacturing industry

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