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Fixed-oriented 6R pseudo-rigid-body model

A pseudo-rigid body and model technology, which is applied in the field of compliant mechanisms, can solve the problems such as the inability to simulate the rotation angle at the midpoint of the compliant rod and the limited analysis accuracy of the 2R pseudo-rigid body model, so as to achieve the effect of improving the analysis accuracy.

Inactive Publication Date: 2016-05-18
JIANGNAN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a fixed-guided 6R pseudo-rigid body model for analyzing fixed-guided compliant rods, to solve the problem that the analysis accuracy of the fixed-guided 2R pseudo-rigid body model is limited and the rotation angle at the midpoint of the compliant rod cannot be simulated

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  • Fixed-oriented 6R pseudo-rigid-body model

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Embodiment Construction

[0009] See figure 1 , a fixed-guided 6R pseudo-rigid body model provided by the present invention, which includes 7 rigid rods AB, BC, CD, DE, EF, FG, GH, 6 rotating pairs Z1, Z2, Z3, Z4, Z5, Z6 and 6 torsion springs K1, K2, K3, K4, K5, K6. One end of the rigid member AB is fixed and the other end is connected with the rigid member BC through the rotating pair Z1, while the rigid members BC, CD, DE, EF, and FG are respectively connected with the rotating pairs Z2, Z3, Z4, Z5, and the rigid member GH One end is "guided" and the other end is connected to the rigid rod FG by means of the swivel pair Z6, forming a chain-like structure that is antisymmetric to the center point, and each swivel pair is provided with a torsion spring.

[0010] Compared with the fixed-guided 2R pseudo-rigid body model, the present invention improves the analysis accuracy of the fixed-guided compliant bar, and can completely simulate the midpoint rotation angle of the fixed-guided compliant bar.

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Abstract

The invention provides a fixed-oriented 6R pseudo-rigid-body model used for analyzing a fixed-oriented compliant rod piece. The fixed-oriented 6R pseudo-rigid-body model comprises seven rigid rod pieces, six revolute pairs and six torsional springs. The seven rigid rod pieces are connected in an end-to-end mode through the six revolute pairs to form a chain structure. The fixed-oriented 6R pseudo-rigid-body model is characterized in that one end of the chain structure is fixed, the other end of the chain structure is oriented to be in central point antisymmetry, and the torsional springs are disposed in the revolute pairs. Compared with fixed-oriented 2R pseudo-rigid-body models, the fixed-oriented 6R pseudo-rigid-body model improves analysis accuracy of the fixed-oriented compliant rod piece and is capable of completely simulating a corner at the midpoint of the fixed-oriented compliant rod piece.

Description

Technical field [0001] The invention relates to the field of compliant mechanisms, in particular to a pseudo-rigid body model of a fixed-guided compliant bar. Background technique [0002] Compliant mechanism is a new type of mechanism that uses the flexible deformation of mechanism components to complete the transmission and conversion of movement and force. Due to the reduction or even removal of kinematic pairs in the structure, the number of components of the compliant mechanism is much smaller than that of the traditional mechanism, and the most direct effect is that the weight of the mechanism and the time and cost of processing and installation are greatly reduced. . At the same time, it removes or reduces complex problems such as clearance, friction, wear and lubrication in the mechanism. [0003] In terms of analysis methods of compliant mechanisms, the analysis process of compliant mechanisms is very complicated due to the geometric nonlinear large deformation of...

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Application Information

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IPC IPC(8): F16C7/04
CPCF16C7/04
Inventor 刘凯曹毅丁泽华丁锐葛姝翌
Owner JIANGNAN UNIV
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