High-flexibility three-DOF (Degree of Freedom) spatial parallel mechanism

A degree of freedom, flexible technology, applied in the field of CNC machine tools, to achieve the effect of high flexibility, high turning ability, easy operation accuracy and quality

Active Publication Date: 2012-08-08
TSINGHUA UNIV
View PDF4 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to meet the high flexibility requirements of modern processing equipment for typical space complex free-form surface parts, and propose a three-degree-of-freedom space parallel mechanism with high flexibility, which can overcome or reduce

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
  • High-flexibility three-DOF (Degree of Freedom) spatial parallel mechanism
  • High-flexibility three-DOF (Degree of Freedom) spatial parallel mechanism

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Examples:

[0017] The structure of a three-degree-of-freedom spatial parallel mechanism with high flexibility in this embodiment is as follows figure 1 As shown, it includes fixed platform 11, fixed platform 16, fixed platform 111, moving platform 113, and first, second, and third branch chains. The three branch chains are respectively connected to fixed platform 11, fixed platform 16, and fixed platform 111. Between and the movable platform 113, and with the fixed platform 11, the fixed platform 16, the fixed platform 111 and the movable platform 113 form a space closed loop mechanism.

[0018] The first and second branches are PRS-type sports branches, which include a slider 12, a slider 110, a connecting rod 114, a connecting rod 112, and a kinematic pair. There are three movement pairs, one is the movement pair P connected to the fixed platform 11, the fixed platform 111 and the sliding block 12 and the sliding block 110, and the other is connected to the sliding block...

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 invention relates to a high-flexibility three-DOF (Degree of Freedom) spatial parallel mechanism, belonging to the technical field of numerical control machines, and comprising a mobile platform, a fixed platform, a first branched chain, a second branched chain and a third branched chain, wherein the mobile and fixed platforms are provided with an actuator respectively; the first and second branched chains are connected between the mobile and fixed platforms and have the same structure; and the third branched chain is connected between the mobile and fixed platforms and has a structure different from the structure of the first second branched chains. The first, second and third branched chains all contain an actively-driving kinematic pair and are respectively connected with the fixed and mobile platforms to form a spatial parallel closed-loop mechanism. The spatial parallel closed-loop mechanism drives the mobile platform to move by three input motions to realize one mobile DOF and two rotational DOFs. The spatial parallel mechanism has high flexibility, specific rotational axis, relatively simple associated movement and other characteristics, and the operation precision and quality of the mechanism can be ensured more easily.

Description

technical field [0001] The invention belongs to the technical field of numerical control machine tools, in particular to a three-freedom space parallel mechanism with high flexibility. Background technique [0002] The traditional mechanism mostly adopts a single open chain structure to realize multiple degrees of freedom of the terminal, which is generally called a series mechanism, and the corresponding parallel mechanism is a closed-loop mechanism composed of multiple branch chains, with a maximum of six degrees of freedom. Parallel mechanisms with less than six degrees of freedom are called few-degree-of-freedom parallel mechanisms, and three-degree-of-freedom parallel mechanisms are one of the most important types. In recent years, the three-degree-of-freedom parallel mechanism among the few-degree-of-freedom parallel mechanisms has received more and more attention and favor from researchers, especially the space parallel mechanism with one-dimensional movement and two-...

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
IPC IPC(8): B23Q1/48
Inventor 谢福贵刘辛军苏铮王立平汪劲松
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap