Parallel machine tool capable of realizing five-axis processing

A parallel, machine tool technology, applied in metal processing mechanical parts, metal processing equipment, manipulators, etc., can solve the problems of low end cutting accuracy, poor dynamic performance, large motion inertia, etc., to reduce the cost of machine tools, high rigidity, and mechanism volume. bigger effect

Inactive Publication Date: 2014-08-13
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditionally, they are arranged in series, so during five-axis machining, the motion inertia is large, the rigidity is weak, the dynamic performance is poor, and the end cutting accuracy is low

Method used

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  • Parallel machine tool capable of realizing five-axis processing
  • Parallel machine tool capable of realizing five-axis processing
  • Parallel machine tool capable of realizing five-axis processing

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Experimental program
Comparison scheme
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Embodiment 1

[0026] see Figure 1 to Figure 6 , the present invention proposes a parallel CNC machine tool capable of five-axis machining, including a bed 1, a four-degree-of-freedom space parallel closed-loop mechanism, an end effector 5, and a working platform 6; the four-degree-of-freedom space parallel closed-loop mechanism includes a front Parallel mechanism 2, rear parallel mechanism 3 and a set of series rod groups.

[0027] The front parallel mechanism 2 and the rear parallel mechanism 3 have the same structure, and both include two columns arranged on the left and right and a moving platform, the two columns are fixed on the bed 1, and the moving platform is arranged on Between the two columns, each of the two columns is connected to the moving platform through a chain, and the branch chain includes a set of linear drive device I and a transmission link 25, and the transmission link 25 is set There are power input end and platform connection end;

[0028] The left and right side...

Embodiment 2

[0039] see Figure 7 , the difference between this embodiment and embodiment 1 is that the structure of the front parallel mechanism 2 and the rear parallel mechanism 3 are different, but the difference is very small, only the hinges VI and VII in the embodiment 1 are transformed into A hinge VIII.

[0040] In summary, the present invention discloses a parallel machine tool capable of five-axis machining, including a bed, two sets of front and rear parallel mechanisms, a series connecting rod group, a two-degree-of-freedom workbench, and an end effector; the front and rear two The sets of parallel mechanisms have basically the same structure, including two columns symmetrically arranged, a moving platform, and two branch chains connecting the column and the moving platform, wherein the two branch chains have the same structural form, and each branch Each chain has a linear drive unit; the moving platforms of the front and rear parallel mechanisms are connected to the series l...

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Abstract

The invention discloses a parallel machine tool capable of realizing five-axis machining. The parallel machine tool comprises a tool body, a front parallel mechanism, a rear parallel mechanism, a serial connecting rod group, a two-degree-of-freedom worktable and an end executor, wherein the front parallel mechanism and the rear parallel mechanism have basically the same structures and respectively comprise two upright posts which are symmetrically arranged, a moving platform and two branched chains connected between the upright posts and the moving platform; the two branched chains have the same structural forms; each branched chain is provided with a linear driving unit; the moving platforms of the front parallel mechanism and the rear parallel mechanism are connected with the serial connecting rod group through two parallel hinges to form a space parallel closed loop mechanism; the space parallel closed loop mechanism realizes two moving degrees of freedom and two rotating degrees of freedom of the end executor through four driving units; the two-degree-of-freedom worktable comprises a linear sliding table and a rotating table arranged on the sliding table. The parallel machine tool disclosed by the invention can realize five-axis or six-axis linking and has better five-axis processing capability.

Description

technical field [0001] The invention belongs to the field of numerical control manufacturing equipment, in particular to a parallel machine tool capable of five-axis machining, which can be used for precision machining of workpieces. 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. Traditionally, they are arranged in series, so during five-axis machining, the motion inertia is large, the stiffness is weak, the dynamic performance is poor, and the end cutting accuracy is low. The parallel machine tool is composed of several simple series branch chains, which has simple structure, high rigidity, high precision and good flexibility, and is suitable for CNC machining of complex space surfaces. [0003] With the continuous development of science and technology, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q5/34B25J9/00
CPCB23Q1/601B23Q1/64B23Q5/402
Inventor 罗振军田永利黄田李博黄磊陈落根
Owner TIANJIN UNIV
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