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A device for testing tension and compression stiffness of parallel mechanism

A technology of tension and compression stiffness and parallel connection, which is applied in the direction of measuring device, elastic test, machine/structural component test, etc., can solve the problems of continuous change of loading load, step change, and inability to apply independent load, etc., to achieve reliable performance , Low production cost, guaranteed accuracy

Active Publication Date: 2018-10-02
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0007] The purpose of the present invention is to provide a device for testing the torsional stiffness of a parallel mechanism, which solves the problem of outputting compound force / moment in the prior art, and cannot apply a linearly independent independent load in a certain direction; loading with weights cannot realize the problem of loading Problems with continuous change, graded change, etc.

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  • A device for testing tension and compression stiffness of parallel mechanism
  • A device for testing tension and compression stiffness of parallel mechanism
  • A device for testing tension and compression stiffness of parallel mechanism

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Embodiment Construction

[0021] The invention will be further described below in conjunction with the accompanying drawings.

[0022] combine Figure 1 to Figure 3 , a device for testing the tensile and compressive stiffness of a parallel mechanism, including a loading device frame 1, a butterfly spring loaded assembly 2, a tension and pressure sensor 3, a force loading rod 4 and a rope displacement sensor 6. Wherein, the bottom of the stay rope displacement sensor 6 is fixedly connected with the bracket fixed on the ground by screws, the stay rope end of the stay rope displacement sensor 6 is fixedly connected with the connector at the top of the moving platform of the parallel mechanism 5 to be measured, and one end of the force loading rod 4 is connected with The connecting piece on the top of the parallel mechanism 5 moving platform is fixedly connected, the other end of the force loading rod 4 is connected with the tension pressure sensor 3 through a thread, one end of the butterfly spring loaded...

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Abstract

The invention discloses a device for testing parallel mechanism tension and compression stiffness. The device comprises a loading device frame, a butterfly spring loaded component, a tension and compression force sensor, a force loading rod and a rope pulling displacement sensor. The bottom part of the rope pulling displacement sensor is fixedly connected with a support fixed on the ground. The rope pulling end of the rope pulling displacement sensor is fixedly connected with the moving platform top connecting member of a parallel mechanism to be tested. One end of the force loading rod is fixedly connected with the moving platform top connecting member of the parallel mechanism. The other end of the force loading rod is connected with the tension and compression force sensor. One end of the butterfly spring loaded component is connected with the loading device frame, and the other end is connected with the tension and compression force sensor. The loading device frame is fixed on the support arranged on the ground. The problems in the prior art that linearly independent load of a certain direction cannot be applied and continuous changing and graded changing of the load cannot be realized in composite force / torque outputting can be solved.

Description

technical field [0001] The invention relates to the field of stiffness testing, in particular to a device for testing the tension-compression stiffness of a parallel mechanism. Background technique [0002] Compared with the series mechanism, the parallel mechanism has the characteristics of large rigidity, stable structure, strong bearing capacity, high precision, small motion inertia, and strong real-time controllability. Parallel mechanisms are widely used in various industrial production and practical activities, such as aerospace, precision manufacturing, automobile processing and assembly, health care and many other aspects. To master the performance of parallel mechanism, it is necessary to analyze the mechanical characteristics of the mechanism in depth, and the stiffness of parallel mechanism is an important index of the mechanical characteristics of the mechanism. [0003] Patent No. 200510050822.1 discloses a parallel six-dimensional force sensor calibration devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M5/00
CPCG01M5/005
Inventor 李开明施俊杰丁高鹏李斌丰杜烨郭欢唐玉龙
Owner NANJING UNIV OF SCI & TECH
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