Hexagonal pyramid type six-freedom-degree parallel mechanism

A technology with a degree of freedom and a hexagonal pyramid, which is applied in the direction of manipulators, program-controlled manipulators, and manufacturing tools, can solve problems such as low movement speed and precision, complex hydraulic drive system structure, and hysteresis of elastic components, achieving fast response and simple structure , the effect of small cumulative error

Inactive Publication Date: 2015-12-23
YANCHENG INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Driven by a linear motor, it solves the problems of complex structure of the hydraulic drive system, prone to oil leakage and pressure relief faults, hysteresis of elastic elements, low movement speed and precision, etc.

Method used

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  • Hexagonal pyramid type six-freedom-degree parallel mechanism
  • Hexagonal pyramid type six-freedom-degree parallel mechanism
  • Hexagonal pyramid type six-freedom-degree parallel mechanism

Examples

Experimental program
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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] The invention mainly consists of a load platform (1), a mechanism base (8) and six sets of branch chains, and the load platform (1) and the mechanism base (8) are connected in parallel through six sets of branch chains. Six groups of branched chains are arranged in the spoke type, and each group of branched chains is uniformly distributed at α=30° and β=90°, so that the load platform (1), the mechanism base (8) and the six groups of branched chains form a hexagonal pyramid shape settings.

[0032] Each set of branch chains is composed of a Hooke hinge (2), a connecting rod (3), a three-degree-of-freedom hinge (4) and a linear motor (7), and the linear motor (7) is obliquely fixed on the mechanism base (8) ;The linear motor (7) is provided with a motor mover shaft (13) and a wedge-shaped slider (16) that can reciprocate and linearly move on the motor m...

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Abstract

The invention relates to a motion simulation device, in particular to a hexagonal pyramid type six-freedom-degree parallel mechanism. The hexagonal pyramid type six-freedom-degree parallel mechanism is formed by connecting a load platform (1), a mechanism base (8) and six sets of branch chains in parallel. Each branch chain set is composed of a hook joint (2), a connecting rod (3), a three-freedom-degree hinge (4) and a linear motor (7), wherein one end of the connecting rod (3) is connected with the load platform (1) through the hook joint (2), and the other end of the connecting rod (3) is connected with a wedge-shaped sliding block (16) of the linear motor (7) through the three-freedom-degree hinge (4). The linear motors (7) drive the connecting rods (3) through the wedge-shaped sliding blocks (16) to drive the load platform (1) to be in linkage. The hexagonal pyramid type six-freedom-degree parallel mechanism has the beneficial effects of being high in speed, precision and response speed and the like. The maximum rotating angle theta of the load platform (1) can reach 51 degrees, and automobile six-freedom-degree vibration simulation under the cross-country road situation is achieved.

Description

technical field [0001] The invention relates to motion simulation equipment, in particular to a hexagonal pyramid six-degree-of-freedom parallel mechanism driven by a linear motor and inclined with guide rails, which is suitable for vibration simulation on six degrees of freedom when a car is running on off-road conditions. Background technique [0002] At present, the known six-degree-of-freedom parallel mechanism consists of a load platform, a connecting rod, a base, a hinge and a drive system. Six connecting rods connect the load platform and the base through hinges. When the drive system changes the position or length of the connecting rods, the load platform can complete the expected six-degree-of-freedom movement in space. As one of the most widely used six-degree-of-freedom parallel mechanisms, motion simulators have become a research hotspot in recent years. Parallel mechanisms with different structures and different driving sources have different performance charact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25J9/08B25J13/00B25J9/06
Inventor 刘玮张如剑张亚萍
Owner YANCHENG INST OF TECH
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