Unlock instant, AI-driven research and patent intelligence for your innovation.

Two-free-degree decoupling spherical parallel mechanism

A degree of freedom and parallel technology, applied in the field of mechanics, can solve problems such as difficult decoupling and inability to decouple, and achieve the effects of improved precision, simple structure, easy motion control and calibration

Inactive Publication Date: 2006-05-24
HEBEI UNIV OF TECH
View PDF7 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Decoupling is more difficult for parallel mechanisms with only rotational degrees of freedom
For example, in the "sun tracking device based on spherical mechanism" reported in Chinese patent document CN03258423.7, a three-degree-of-freedom spherical mechanism is used, but its three rotations are fully coupled, that is, it cannot be decoupled; The degree spherical mechanism can only be decoupled instantaneously at the initial position, and other positions cannot be decoupled
The literature about the invention of the two-degree-of-freedom spherical mechanism that can be decoupled has not yet been retrieved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-free-degree decoupling spherical parallel mechanism
  • Two-free-degree decoupling spherical parallel mechanism
  • Two-free-degree decoupling spherical parallel mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Further describe the present invention below in conjunction with embodiment and accompanying drawing thereof, but it does not limit the claims of the present invention.

[0018] Two-degree-of-freedom decoupling spherical parallel mechanism of the present invention (see Figure 1-3 ), including a base 1 and a moving platform 3 and a first kinematic branch chain 2 and a second kinematic branch chain 4 fixedly connected between the base 1 and the moving platform 3; the first kinematic branch chain 2 includes: by connecting rod L 1 (marked as 22a in the figure, the same below), connecting rod L 2 22b, connecting rod L 3 22c, connecting rod L 4 22d and the four axis space parallel rotary pair R connected by it 1 21a. Rotary pair R 2 21b. Rotary pair R 3 21c, rotary pair R 4 21d to form a parallelogram mechanism, three rotary pairs R with axes parallel in space 5 23a. Rotary pair R 6 23b. Rotary pair R 7 23c and a rotary pair R whose axis space is vertical 8 25 and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a two-freedom uncoupling spherical parallel mechanism. It includes a machine seat and a movable platform, and first motion supporting chain and second motion supporting chain that is respectively fixedly connected between the machine seat and movable platform. Besides, said invention also includes 10 rotation pairs and 9 link levers, said invention also provides their connection mode, and provides its working principle and application field.

Description

technical field [0001] The invention relates to a parallel mechanism in the field of mechanics, specifically a spherical parallel mechanism that can be unconditionally decoupled under two degrees of freedom, and the international patent classification number is intended to be Int.Cl 7 B25J9 / 08. Background technique [0002] Parallel mechanisms are widely used in heavy-duty simulation equipment, robots, CNC machine tools, sensors and micro-manipulation and other fields. However, the drive units of the parallel mechanism are coupled, that is, the movement of the overall output platform of the parallel mechanism in any direction is the synthesis of the motions of all drive units, and the movement of each drive unit is combined with the overall movement of the parallel mechanism (i.e. input and output ) is non-linear. This characteristic leads to complex control of parallel mechanism, difficult calibration, and restricts the improvement of accuracy. Therefore, how to realize ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B25J9/08
Inventor 李为民张建军孙建广石晓明张顺心
Owner HEBEI UNIV OF TECH