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A new four-degree-of-freedom parallel machine tool

A degree of freedom, parallel technology, applied in the direction of manipulators, large fixed members, program-controlled manipulators, etc., can solve the problems of high machining removal rate, etc., and achieve the effects of good dynamic performance, strong reconfigurability, and large working space.

Active Publication Date: 2020-07-24
ZHONGBEI UNIV
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Problems solved by technology

[0005] The present invention aims at the problems existing in traditional numerical control machine tools and existing series / parallel machine tools in processing complex curved surface structural parts with high removal rate, and proposes a four-degree-of-freedom parallel machine tool with a space three-dimensional parallel mechanism composed of three branch chains as the mechanical body

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  • A new four-degree-of-freedom parallel machine tool
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Embodiment Construction

[0021] The specific embodiment of the present invention will be further described in conjunction with the accompanying drawings.

[0022] Such as Figure 1~Figure 5 , a new type of four-degree-of-freedom parallel machine tool includes: Y The machine tool frame 1 with long straight guide rails in the axial direction, the parallel processing module 2 and other parts; the parallel processing module 2 includes a moving platform 21, a tool 22, a first branch chain 23, a second branch chain 24, and a third branch chain 25, Each part together forms a three-dimensional parallel mechanism in space; the parallel processing module 2 is driven by four inputs to realize its moving platform 21 in the YZ Two-dimensional movement in the plane and X axis with Y rotation on the shaft axis.

[0023] Such as figure 2 , 3 As shown, the first branch chain 23 of the parallel processing module 2 is a (2-PRP)-UP type parallel motion branch chain (P represents a moving pair, R represents a rotat...

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Abstract

The invention belongs to the technical field of mechanical production and manufacturing, and particularly relates to a novel four-freedom degree parallel machine tool, and solves the problems that theswinging angles of a conventional numerically-controlled machine tool and an existing parallel / series parallel machine tool cutter are limited, and during processing long and thin integral structuralmembers or processing curved surface type workpieces of which the removing capacity is high, the flexibility is poor, and the rigidity and the precision are low. The novel four-freedom degree parallel machine tool comprises a long and straight guide rail of a machine tool and a parallel processing module, wherein the parallel processing module forms a space parallel closed loop mechanism; and through four input driving, two-dimensional moving of a moving platform in the YZ plane of a machine tool coordinate system and two-dimensional rotating of a rotating shaft in an upper plane of the moving platform of the machine tool are realized by the parallel processing module, so that four-freedom degree movement of the moving platform of the parallel processing module is realized. The novel four-freedom degree parallel machine tool disclosed by the invention has the advantages of being simple in structure, large in working space, high in rigidity precision, good in dynamic performance, highin reconfigurability and the like; and the moving platform is good in flexibility, and driving load in Y-axis direction is small in changes.

Description

technical field [0001] The invention belongs to the technical field of mechanical production and manufacturing, and specifically relates to a novel four-degree-of-freedom parallel machine tool. Background technique [0002] The parallel mechanism is a closed-loop mechanism composed of multiple branch chains. Compared with the traditional series mechanism, the parallel mechanism has the following advantages: As a kind of manufacturing equipment with the parallel mechanism as the mechanical body, the parallel machine tool appeared in the late 1990s. With the deepening of theoretical research on parallel mechanisms and the continuous development of numerical control technology, automation technology and computer technology, parallel machine tools have gradually become an important new manufacturing equipment and are used in modern manufacturing. Compared with traditional tandem machine tools, parallel machine tools have a higher stiffness-to-weight ratio, faster response speed,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q1/64B25J9/00
CPCB23Q1/64B25J9/003
Inventor 梅瑛何镏源许文文沈祚
Owner ZHONGBEI UNIV
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