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Five-axis numerical control machine tool

A technology for CNC machine tools and machine beds, which is applied to metal processing mechanical parts, large fixed members, driving devices, etc., can solve the problems of poor machine tool spindle rigidity and low machining accuracy, and achieves lower machine tool costs, high machining efficiency, and high precision. Effect

Inactive Publication Date: 2015-06-17
TIANJIN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] According to the existing patent documents GB2173472 (or EP0200369, US4790718), SE8502327 (or US4732525), CN1524662, CN1709657A and CN1439492A, it can be known that the existing structure of a space hybrid robot with a positioning head adopts the structural form of a series swing positioning head. The rigidity of the spindle is poor, and the machining accuracy is not high

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[0016] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0017] Please refer to Figure 1(a) and Figure 1(b), a five-axis CNC machine tool, including a bed 9, a cradle-type workbench, a first branch chain 1, a second branch chain 2, a third branch chain 3, and a column 5. Crossbeam 4, spindle frame 33 and electric spindle 34; the column 5 is fixed on the bed 9, and the two columns 5 are supported with the beam 4; The support seat 8 on the bed 9, the U-shaped cradle 7 and the rotary table 6, the center of the U-shaped cradle 7 is provided with the rotary table 6 connected to it through a rotating pair, and the U-shaped The cradle 7 is connected to the support base 8 through a rotating pair, and both the rotary table 6 and the U-shaped cradle 7 are provided with driving devices. The cradle-type workb...

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Abstract

The invention discloses a five-axis numerical control machine tool which comprises a machine tool bed, a cradle type workbench, a first branched chain, a second branched chain, a third branched chain, stand columns, a cross beam, a main shaft frame and an electric main shaft. The first branched chain and the second branched chain are arranged on an identical horizontal plane and form a two-free-degree parallel mechanism, and the telescopic motion of the first branched chain and the second branched chain controls the feeding motion of the electric main shaft in the horizontal plane. The third branched chain is vertically arranged, and the telescopic motion of the third branched chain controls the feeding motion of the electric main shaft in the vertical direction. The cradle type workbench with two free degrees can control the posture of a workpiece. The machine tool is driven by five driving devices in a linkage mode to achieve processing of the workpiece, that is, five-axis linkage processing is achieved. The five-axis numerical control machine tool is simple in structure, large in ratio of working space and mechanism size, high in rigidity, high in precision, good in flexibility and suitable for carrying out the numerical control processing of a complex space curved face.

Description

technical field [0001] The invention relates to a numerically controlled machine tool, in particular to a five-axis numerically controlled machine tool. Background technique [0002] In the past ten years, parallel / hybrid CNC machine tools have been a hot topic in the field of CNC machine tool research at home and abroad. Parallel / hybrid machine tools have many advantages compared with traditional CNC machine tools. Traditional CNC machine tools are arranged in series, so when the five-axis is linked, the motion inertia is large, the stiffness is weak, the dynamic performance is poor, and the cutting accuracy at one end is low. The parallel machine tool is composed of several simple series branch chains. The hybrid machine tool is composed of a parallel mechanism and a series positioning head. It has a simple structure, a large ratio of working space to mechanism volume, high rigidity, high precision, and good flexibility. CNC machining of space surfaces. [0003] Accordi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q1/50B23Q1/25B23Q5/02
Inventor 罗振军黄田田永利陈落根马跃
Owner TIANJIN UNIV
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