Multi-axes synchronous hybrid device

A multi-axis linkage and hybrid technology, which is applied to large fixed members, metal processing mechanical parts, metal processing equipment, etc., can solve problems such as small workspace, complex CNC programming, and strong motion coupling.

Inactive Publication Date: 2008-10-08
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the parallel device also has its inherent defects, especially the 6-DOF parallel device, which has strong kinematic coupling, small working space, and complex numerical control programming, which restricts the popularization and application of parallel devices to a large extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The structure of the multi-axis hybrid device in this embodiment is as follows: figure 1 shown, where figure 1 (a) is the front view, figure 1 (b) is a rear view, including the bed 11, the moving platform 110, the articulated swing head 111 for installing the main shaft, the workbench 13 for installing the workpiece 14 to be cut, and the symmetrical arrangement arranged on the bed and connected by a horizontal connector 19 The two columns 15,114 and the first, second, and third branch chains, the three branch chains are respectively connected between the columns 15,114, the bed 11 and the moving platform 110, and are connected to the column 15 , 114, the bed 11, and the moving platform 110 form a space parallel closed-chain mechanism, and the workbench 13 is driven by the servo motor 12 through a ball screw pair.

[0025] The first and second branch chains are PRR type motion branch chains, including the two columns 15, 114, a slider 16, a slider 115, a connecting rod...

Embodiment 2

[0028] The structure of the multi-axis hybrid device in this embodiment is as follows: figure 2 As shown, the difference between this device and Embodiment 1 is that the worktable is composed of a platform 221 that rotates around the z-axis and a platform 222 that moves along the x-axis, and the platform 221 is driven by a servo motor 223 . The table has a degree of freedom of movement along the x-axis and a degree of freedom of rotation around the z-axis. Other structures and working processes of this embodiment are the same as those of Embodiment 1. The device realizes horizontal four-axis linkage control motion.

Embodiment 3

[0030] The structure of the multi-axis hybrid device in this embodiment is as follows: image 3 As shown, the difference between this device and Embodiment 1 is that the third branch chain is connected to the moving platform through the vertical extension 32 and the horizontal extension 31 of the bed, and the articulated swing head 33 is placed vertically, and is connected with the moving platform. The platforms are fixedly connected to form a vertical structure. Other structures and working processes of this embodiment are the same as those of Embodiment 1. The device can realize vertical three-axis linkage control.

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Abstract

The invention belongs to the manufacturing field of a numerical control device and relates to a multiaxial linkage series-parallel, which comprises a bed body, a moving platform, a joint type swinging head on which a spindle is arranged, three branched chains and a worktable on which a cut workpiece is arranged; wherein, a prismatic pair connection is achieved between the bed body and the worktable, the joint type swinging head on which the spindle is arranged is fixedly connected with the moving platform, the three branched chains are respectively connected between the bed body and the moving platform so as to form a spatial parallel closed-chain mechanism with the bed body and the moving platform and the spatial parallel closed-chain mechanism is used for realizing a freedom of two-dimensional movement, the worktable is used for realizing a freedom of one to two dimension, the joint type swinging head is used for realizing a freedom of zero to two dimension, and the compound motion of the worktable, the spatial parallel closed-chain mechanism and the joint type swinging head can realize at least a triaxial linkage control. The device has simple structure, reasonable layout, high stiffness, easy control, large work space and high machining accuracy, and can work with being placed vertically or horizontally, thus satisfying the requirements for multiaxial linkage numerical control machining of parts with complex curved surfaces.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q1/01B23Q1/25B23Q1/48
Inventor 刘辛军汪劲松谢福贵
Owner TSINGHUA UNIV
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