Parallel workbench for realizing space three-translation high-frequency excitation

A three-translation, workbench technology, used in vibration testing, machine/structural component testing, measuring devices, etc., can solve the problem of inability to simulate multi-degree-of-freedom high-frequency vibration output, inability to simulate multi-dimensional real vibration, and inability to achieve high-frequency motion output and other issues, to achieve the effect of compact structure, high rigidity of parallel mechanism and high transmission of high frequency

Inactive Publication Date: 2012-05-09
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] 1. The publication number is CN101854153A, and the name is " "Piezoelectric high-frequency vibration table" is a single-dimensional high-frequency vibration table that can produce a single-dimensional vibration output of 2kHZ-50kHZ, but its defect is that it cannot simulate the multi-degree-of-freedom high-frequency vibration output in the actual situation
[0005] 2. The publication number is CN87210629 and the name is " "Hydraulic asynchronous bumping vibration table", which can perform vertical movement and withstand horizontal movement, but its vibration form is compos

Method used

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  • Parallel workbench for realizing space three-translation high-frequency excitation
  • Parallel workbench for realizing space three-translation high-frequency excitation
  • Parallel workbench for realizing space three-translation high-frequency excitation

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Embodiment Construction

[0018] see figure 1 , the present invention is made up of three parts, one is the moving platform 4 that is used to install the component to be tested, and it can realize the high-frequency vibration of three translations in space; , 7, provide the high-frequency input required by the entire workbench, the third is the three parallel branch chains 3, 5, 8 connecting the moving platform 4 and the single-dimensional vibrator 2, 6, 7, and the three parallel branch chains 3, 5 , 8 are connected with the moving platform 4 in an orthogonal form, and connected with the single-dimensional vibrator at the three drive inputs.

[0019] The static platform 1 is composed of three panels, the three panels are respectively a horizontal bottom panel and two vertical panels, and the two vertical panels are orthogonal to each other and are vertically orthogonal to a horizontal bottom panel. In the space surrounded by three panels, a single-dimensional exciter is fixed vertically on each panel,...

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Abstract

The invention discloses a parallel workbench for realizing space three-translation high-frequency excitation in which a flexible kinematic pair is combined with a parallel mechanism, wherein a static platform is composed of three panels orthogonal with each other; a single-dimensional exciter is vertically and fixedly arranged on each panel; three parallel branch chains are connected between a movable platform and the single-dimensional exciters; the tail ends of three branch chains in orthogonal distribution are connected to the corresponding single-dimensional exciters through movable pairs, respectively; and the top ends of the three branch chains in orthogonal distribution are all vertically connected to the movable platform through rotating pairs; the single branch chain is formed by orderly connecting the movable pair 3A, 4R structure 3B, the rotating pair 3c and the rotating pair 3D in series according to the vertical and parallel position relations of the axes of the movable pairs; and the movable pair is a continuous integrated body and is provided with a surface contact compression-resisting structure and a surface contact tensile structure. The parallel workbench is good in stress performance, compact in structure and relatively high in structural rigidity.

Description

technical field [0001] The invention relates to a workbench combining a flexible kinematic pair and a parallel mechanism, which can realize three-translation high-frequency excitation in space. Background technique [0002] With the development of modern mechanical engineering towards high speed, high precision and high performance, it is more and more important to test the vibration reliability performance of equipment, especially the test of 400Hz high frequency vibration reliability performance. Performing this type of testing requires a high frequency excitation table to simulate real high frequency vibrations. [0003] There are mainly the following types of exciters currently available: [0004] 1. The publication number is CN101854153A, and the name is "Piezoelectric High Frequency Vibration Table". It is a single-dimensional high-frequency vibration table that can produce a single-dimensional vibration output of 2kHZ-50kHZ, but its defect is that it cannot simulate ...

Claims

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Application Information

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IPC IPC(8): G01M7/06
Inventor 杨启志朱小兵陈龙马履中庄佳奇
Owner JIANGSU UNIV
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