Large joint surface experiment device
An experimental device and joint surface technology, which is applied in the field of large-scale joint surface normal stiffness and tangential stiffness detection devices, can solve problems such as limiting the use range of the device
Inactive Publication Date: 2011-05-11
天津航天长征技术装备有限公司
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Problems solved by technology
[0006] Since the device can only be loaded from one direction and is only suitable for small-area specimens with the unit area method, this limits the scope of use of the device and can only be used in scientific research institutions
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[0037] An embodiment of the present invention will be specifically described below in conjunction with the accompanying drawings.
[0038] refer to image 3As shown, the large joint surface experimental device of this embodiment is mainly composed of a normal force applying device 1, a normal eddy current sensor 2, an upper specimen 3, an acceleration sensor 4, a tangential force applying device 5, a lower A test piece 6, a workbench 7, a tangential eddy sensor 8, and a tangential force sensor are composed 9. The workbench 7 is arranged on the lower part of the mechanical frame, and the table top of the workbench 7 is a working surface provided with a uniform T-shaped groove; the lower test piece 6 is a square cylinder, and the lower test piece 6 is placed on the workbench 7. The bottom surface of piece 6 is provided with a positioning boss, and the positioning boss is embedded in the T-shaped groove of workbench 7; A screw-type manual pre-adjuster is provided. By adjusting ...
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The invention relates to a large joint surface experiment device, in particular to a large joint surface normal rigidity and tangential rigidity detection device and method. The device comprises a normal augmentor (1) in a mechanical frame, a normal eddy current sensor (2), an upper test specimen (3), an acceleration sensor (4), a tangential augmentor (5), a lower test specimen (6), a working platform (7), a tangential eddy current sensor (8), a tangential force sensor (9) and an upper computer for calculating the characteristics of a joint surface. In the method, a periodical external force load and the deformation of the joint surface under the periodical external force load are measured in a Kelvin-Voight model, a delaying curve of the periodical process is made, and the rigidity and damping characteristics of the joint surface are obtained. The large joint surface normal rigidity and tangential rigidity detection device can be used for measuring static and dynamic normal rigidities and damps of the large fixed joint surface, and can realize the characteristics of the joint surface when loaded with a positive load, an unbalance load and an impact load.
Description
technical field [0001] The large joint surface experimental device relates to a measuring and testing device, in particular to a large joint surface normal stiffness and tangential stiffness detection device and method. Background technique [0002] There are a large number of joint surfaces in mechanical parts. The spring and damping characteristics reflected by the joint surfaces are an important part of the stiffness and damping characteristics of mechanical parts. Especially for machine tools, the damping of the joints accounts for 90% of the entire machine tool damping. 60%-80% of the total stiffness of the machine tool is determined by the contact stiffness of the joint surface. Therefore, it is very necessary to study the junction, which can greatly improve the performance of mechanical products. [0003] The joint is usually connected by two planes through different ways of preloading, and its characteristics are reflected through the interaction of the joint surfac...
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Inventor 王锋蔡力钢郭铁能赵永胜刘志峰程强马仕明
Owner 天津航天长征技术装备有限公司