Redundantly actuated parallel machine tool body
A machine tool and parallel technology, applied in the direction of manipulators, program-controlled manipulators, manufacturing tools, etc., can solve the problems of low degree of freedom and poor stiffness, and achieve the effect of improving the bearing capacity, eliminating the singular configuration, and meeting the requirements of high-precision motion.
Inactive Publication Date: 2017-07-21
BEIJING JIAOTONG UNIV
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Problems solved by technology
The tandem machine tool has a large working range and good flexibility, but has the problems of poor rigidity and low degree of freedom
Method used
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[0067] The present invention will be further described in conjunction with accompanying drawings.
[0068] A redundantly driven parallel machine tool body, such as figure 1 As shown, the machine tool includes: frame 1, first to sixth linear moving assemblies 2-1, 2-2, 2-3, 2-4, 2-5, 2-6, first to sixth connecting rods Assemblies 3-1, 3-2, 3-3, 3-4, 3-5, 3-6, bench assembly 6.
[0069] The first to sixth guide rail frames 9-1, 9-2, 9-3, 9-4, 9-5, 9-6 are respectively fixed and connected to six supports 4-1, 4-2, 4-3, 4-4, 4-5, 4 on the frame 1 by screws -6 in;
[0070] Such as Figure 5 As shown, the first linear movement assembly 2-1 includes: a motor 7-1, a coupling 8-1, a guide rail frame 9-1, a first guide rail 10-1 and a second guide rail 10-2, and a lead screw 11- 1. Slider 12-1, baffle 13-1, first and second baffle bearings 14-1, 14-2;
[0071] Connections between the components that make up the first linear movement assembly:
[0072] Lead screw 11-1 and slider 1...
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A redundantly actuated parallel machine tool body is suitable for various fields of machining, cutting, measuring and the like. The problem that a series machine tool is poor in rigidity and low in flexibility is solved. The machine tool comprises a rack, linear movement assemblies, connecting rod assemblies and a workbench assembly. One end of the first connecting rod assembly, one end of the second connecting rod assembly, one end of the third connecting rod assembly, one end of the fourth connecting rod assembly, one end of the fifth connecting rod assembly and one end of the sixth connecting rod assembly are fixedly connected with a sliding block of the first linear movement assembly, a sliding block of the first linear movement assembly, a sliding block of the second linear movement assembly, a sliding block of the third linear movement assembly, a sliding block of the fourth linear movement assembly, a sliding block of the fifth linear movement assembly and a sliding block of the sixth linear movement assembly, the other end of the first connecting rod assembly, the other end of the second connecting rod assembly, the other end of the third connecting rod assembly, the other end of the fourth connecting rod assembly, the other end of the fifth connecting rod assembly and the other end of the sixth connecting rod assembly are connected with a first U-shaped connector, the second U-shaped connector, the third U-shaped connector, the fourth U-shaped connector, the fifth U-shaped connector and the sixth U-shaped connector in the workbench assembly through cross shafts, and a hooke joint is formed. The sliding blocks do linear movement along guide rails to drive connecting rods to move, motion input on a workbench is achieved, and three-freedom-degree motion of two rotation and one translation is achieved.
Description
technical field [0001] The invention relates to a parallel machine tool body with redundant drive, which can realize multiple functions such as multi-coordinate linkage numerical control machining, assembly and measurement, and can satisfy complex free-form surface parts (such as blades, impellers, propellers, and cavities of complex molds, etc.) ) processing requirements, is a new concept of machine tools. Background technique [0002] Parallel machine tool is developed based on the Stewart platform principle of space parallel mechanism. It is a high-tech product developed by combining space mechanism, mechanical manufacturing technology, numerical control technology, computer software and hardware technology and CAD / CAM technology. It can be regarded as a parallel robot. An application in the field of machining. At present, the motion platforms used by machine tools mainly include series and parallel. The tandem machine tool has a large working range and good flexibility...
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IPC IPC(8): B25J9/00
CPCB25J9/0063
Inventor 曲海波张传亮于智远郭盛
Owner BEIJING JIAOTONG UNIV
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