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A Two-DOF Scaling Mechanism Based on Similarity of Four-bar Mechanism

A technology of four-bar mechanism and degrees of freedom, applied in the direction of manipulators, program-controlled manipulators, manufacturing tools, etc., can solve the problems of insufficient compact structure and large space occupation.

Inactive Publication Date: 2016-03-09
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although the current zoom mechanism is widely used, its structure is often not compact enough and needs to occupy a large space; and the asymmetry of the existing zoom mechanism itself also limits its use.

Method used

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  • A Two-DOF Scaling Mechanism Based on Similarity of Four-bar Mechanism
  • A Two-DOF Scaling Mechanism Based on Similarity of Four-bar Mechanism
  • A Two-DOF Scaling Mechanism Based on Similarity of Four-bar Mechanism

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Embodiment Construction

[0027] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0028] The present invention is a two-degree-of-freedom scaling mechanism similar to a four-bar mechanism, including a frame 1 and a first connecting rod 201, a second connecting rod 202, a third connecting rod 203, a fourth connecting rod 204, and a fifth connecting rod 205. A two-degree-of-freedom scaling rod composed of the sixth connecting rod 206, such as figure 1 shown;

[0029] Wherein, the center positions of the first connecting rod 201 and the second connecting rod 202 are hinged, and the hinge point is O; thus, the hinge point O divides the first connecting rod 201 into left and right parts, respectively making them the left and right parts of the first connecting rod. part and the right part of the first connecting rod; similarly, the hinge point O also divides the second connecting rod 202 into left and right parts, making them respectiv...

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Abstract

The invention discloses a two-degree-of-freedom scaling mechanism based on four-bar mechanism similarity, which comprises a support, a first connecting bar, a second connecting bar, a third connecting bar, a fourth connecting bar, a fifth connecting bar and a sixth connecting bar. The left part of the first connecting bar, the left part of the second connecting bar, the third connecting bar and the fourth connecting bar compose a four-bar mechanism; and the right part of the first connecting bar, the right part of the second connecting bar, the fifth connecting bar and the sixth connecting bar compose another four-bar mechanism. In the process of the motion of the mechanism, the two four-bar mechanisms are always similar quadrangles. The mechanism has the advantages that the mechanism can scale any plane figures; the structure is simple and compact, and the occupied space is small; since the mechanism is symmetrical, static balance can be easily realized; and mechanisms designed on the basis of the same principle have a lot of configurations.

Description

technical field [0001] The invention relates to a two-degree-of-freedom scaling mechanism similar to a four-bar mechanism, which belongs to the field of mechanism design and synthesis. Background technique [0002] The zoom mechanism is a kind of mechanism that can realize the similar output of the source point and the imitation point, and scale up. Since the appearance of the scaling mechanism, it has been mainly used in the fields of graphic scaling, pattern engraving, robot leg mechanism design, mechanical arm design, mechanism static balance design, reverse drive mechanism design, etc. For example, the patent CN2493372Y "Spherical Mobile Robot" proposes to use a symmetrically arranged scaling mechanism as the leg mechanism to realize the flexible movement of the robot on the spherical wall; The balance of the robot's center of mass. However, although the current scaling mechanism is widely used, its structure is often not compact enough and needs to occupy a large spac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25J9/08
Inventor 于靖军陆登峰丁希仑郭卫东
Owner BEIHANG UNIV
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