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Parallel type three-axis main-shaft head structure

A spindle head and parallel technology, applied in the direction of large fixed members, metal processing machinery parts, metal processing equipment, etc., can solve the problem of high cost, achieve high dynamic performance, meet high speed, and realize the effect of compound processing

Inactive Publication Date: 2010-10-06
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the traditional machine tool, the parallel machine tool has improved its speed, acceleration, precision and rigidity due to the use of tool movement, but the cost of manufacturing a parallel machine tool with a 6-degree-of-freedom mechanism is high, and in practical applications In the middle, often 3 degrees of freedom mechanism can meet the requirements

Method used

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  • Parallel type three-axis main-shaft head structure
  • Parallel type three-axis main-shaft head structure
  • Parallel type three-axis main-shaft head structure

Examples

Experimental program
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Embodiment

[0016] The structure of the parallel three-axis spindle head of the present embodiment, such as figure 1 As shown, the structure includes a main shaft 5 , a moving platform 4 , a fixed platform 1 and three triangularly arranged branches connecting the moving platform 4 and the fixed platform 1 , and the main shaft 5 is fixed on the moving platform 4 .

[0017] This each branch mechanism comprises mobile pair 61, planar parallelogram mechanism 62 and ball hinge 63; This mobile pair 61 comprises column 2 and input slide block 3, and this column 2 is equilateral triangle and is fixedly connected with fixed platform 1, and this column 2 When the input slider 3 moves in the guide surface of the column 2, one end of the ball hinge 63 is connected with the plane parallelogram mechanism 62, and the other end is connected with the moving platform 4; the plane parallelogram mechanism 62 includes two equal and parallel lengths The long rod 621, and the short rod 622 connected to one end...

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Abstract

The invention relates to a head structure of a parallel triple-axis main spindle, belonging to the technical field of mechanical manufacturing, which comprises a main spindle, a movable platform, a stationary platform, and three identical structural branch mechanisms which are arranged in a triangle for connecting the movable platform and the stationary platform, the main spindle is fixed on the movable platform; each branch mechanism comprises a movement pair, a planar parallelogram mechanism, and a spherical hinge; the planar parallelogram mechanism comprises two parallel long rods with same length and two short rods with one end connected with the long rod via a revolute pair. By adopting the planar parallelogram mechanism, the head structure of the parallel three-axis main spindle hasthe advantages of improving the structural rigidity, realizing the Z axis movement of the platform and rotation around X axis and Y axis by overriding three movement pairs, changing the main spindle working position, and having the possibility to comprehensively machine the big scale complicated structural parts.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing, and relates to a parallel three-axis spindle head structure which cooperates with other devices to carry out combined processing of parts such as aviation large complex structural parts. Background technique [0002] At present, a large number of multifunctional milling machines are equipped with a two-axis spindle head that can realize continuous rotation. These spindle heads mostly adopt a tandem structure with double swing angles or fork heads. For example, patent ZL03278067.2 describes an A / C Shaft spindle head and a kind of fork head spindle head proposed by the patent US 3483796. These spindle heads often have complex transmission systems, large structures, large moving masses, and are difficult to install, resulting in high manufacturing costs and high maintenance costs. [0003] In the past ten years, a new concept machine tool-parallel machine tool has appeared in the world. At ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q1/26B23Q1/48B23B19/02
Inventor 汪劲松刘辛军王立平郝齐
Owner TSINGHUA UNIV
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