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Multi-shaft linkage series-parallel machine tool

A multi-axis linkage and machine tool technology, which is applied in metal processing mechanical parts, large fixed members, metal processing, etc., can solve problems such as small working space, complex NC programming, and strong kinematic coupling

Inactive Publication Date: 2008-09-24
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, parallel machine tools also have their inherent defects, especially 6-DOF parallel machine tools, which have strong kinematic coupling, small working space, and complex NC programming, which restrict the popularization and application of parallel machine tools to a large extent.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The structure of the present embodiment 1, such as figure 1 As shown, it includes the bed 1, the moving platform 18 on which the main shaft 17 is installed, the workbench on which the workpiece 4 is installed, and three columns 6, 10, 13 arranged on the bed. The three columns are arranged in a triangle, and the column guide rails are equipped There are sliding saddles 7, 11, 15 for linear motion, and the three sliding saddles are respectively driven by servo motors 8, 9, 14 installed in each column through ball screws; the machine tool is characterized in that the moving platform 18 The three branch chains 5, 12, 16 are respectively connected with the saddle 7, 11, 15 to form a space parallel closed chain mechanism. The various structures disclosed in the patent application of decoupled space three-degree-of-freedom parallel mechanism, the space parallel closed-chain mechanism realizes the degree of freedom of movement along the x and z directions and the degree of free...

Embodiment 2

[0017] The structure of the present embodiment 2, such as figure 2 As shown, the difference between this machine tool and Embodiment 1 is that the worktable is composed of a platform 23 rotating around the y direction and a platform 39 moving along the y direction, and the platforms 23, 39 are driven by servo motors 22, 40 respectively .

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Abstract

The invention relates to a multiple spindle linkage series and parallel machine tool, which belongs to the production field of a numerical control machine. The machine tool mainly comprises a bed piece, a moveable platform for arranging a basic shaft, an operation platform for arranging a cut workpiece and three upright posts arranged on the bed piece; the three upright posts are distributed in a triangle shape; the guide rail of each upright post is provided with a saddle in a straight-line motion; the moveable platform is connected with the three saddles through three branched chains to form a space parallel closed chain apparatus; the space parallel closed chain apparatus is used for realizing two-dimensional motion and one-dimensional rotation motion freedom; the operation platform for arranging the cut workpiece is used for realizing one-dimensional motion and one-dimensional rotation motion freedom; the operation platform and the space parallel closed chain apparatus are used for realizing the gang control of five shafts. The multiple spindle linkage series and parallel machine tool has the advantages of simple structure, reasonable distribution, flexible and easy-control processing, large operation space, high processing precision, and realization of vertical and horizontal purposes; combined with the predominance of the serial-type and the parallel-type machine tools, the machine tool can be used for multiple spindle linkage numerical control processing of complex curved-type parts.

Description

technical field [0001] The invention belongs to the field of numerical control machine tool manufacturing, and relates to a multi-axis linkage mixed machine tool capable of performing multi-axis linkage numerical control machining on complex curved surface parts. Background technique [0002] In the field of CNC machine tool manufacturing, the mechanical structure of traditional CNC machine tools mostly adopts a series connection method, which makes the machine tool prone to error accumulation, the overall rigidity is not high, and the machining accuracy is low. In the 1990s, the birth of parallel machine tools made people see the hope of CNC machine tools. Parallel machine tool has the advantages of simple structure, high rigidity, no error accumulation, small mass of moving parts, and easy to realize high-speed motion, etc., which makes up for the shortcomings of traditional CNC machine tools to a certain extent. However, parallel machine tools also have their inherent de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q1/01B23Q1/25B23Q5/00
Inventor 刘辛军汪劲松吴超
Owner TSINGHUA UNIV
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