Single-driving bisynchronous-stretching micro-operation test bed
A two-way synchronous stretching and micro-operation technology, applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of easy deformation of ropes, complicated platform construction, and limited applications, etc., to achieve simple and reliable structure and reduce costs , Ease of use and strong effect
Active Publication Date: 2015-07-08
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
[0004] It is realized by double driving, that is, independent driving devices are installed in both horizontal and vertical directions (for example, Chinese invention patent "Mechanical Biaxial Tensile Tester with Variable Ratio Loading", application number: 201010240086.7), due to the tensile The test requires high synchronization, so the dual-drive test bench needs to be installed with precise displacement sensors and a complex synchronization control system, resulting in complex construction of the entire platform and high cost
[0005] A bidirectional tensile test bench with a single drive input usually uses gears and ropes as the transmission mode (for example, the Chinese invention patent "a bidirectional tensile test device for testing the properties of metal sheets", application number: 201210194623.8), the structure is complex, and The rope is easy to deform, which limits its application in the testing of mechanical properties of tiny specimens
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[0025] Such as figure 1 Shown: the single-drive two-way synchronous tensile micro-operation test bench according to the present invention includes a driving device 1, a cross frame 2, a longitudinal guide rail 7, a longitudinal slider I14, a longitudinal slider II17, a transverse guide rail 9, and a transverse slider I12, horizontal slider II16, reverse synchronous transmission lead screw group, horizontal clamp bracket I8, horizontal clamp bracket II15, horizontal clamp I3, horizontal clamp II10, vertical clamp I13, vertical clamp II4 and diamond four-bar linkage mechanism 11. The reverse synchronous transmission lead screw group includes a lead screw I6 and a lead screw II5.
[0026] The cross frame 2 is provided with through holes for installing guide rails. The longitudinal guide rail 7 is fixed on the cross frame 2 by bolt connection, and the transverse guide rail 9 is fixedly installed on both sides of the longitudinal guide rail 7 and fixed on the cross frame 2 by bolt...
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The invention discloses a single-driving bisynchronous-stretching micro-operation test bed, and a test piece can be stretched in two mutually vertical directions by a slide block through a driving input. The single-driving bisynchronous-stretching micro-operation test bed comprises a driving device, a cross-shaped stander, a longitudinal slide block and a longitudinal guide rail, a transverse slide block and a transverse guide rail, a reverse synchronous-driving guide screw set, a transverse fixture support frame, a longitudinal fixture and a diamond four-bar mechanism. According to the single-driving bisynchronous-stretching micro-operation test bed, a link mechanism is adopted to realize synchronous stretching on the test piece in two directions, and an electromechanical control system and a complex transmission mechanism for guaranteeing bidirectional synchronization in the traditional device are omitted; and the stander is stable and firm, the structure is simple, the cost is low, and the stretching test can be carried out on tiny objects.
Description
technical field [0001] The invention relates to a stretching mechanism and a device thereof for testing the mechanical properties of micro-object materials, in particular to a mechanism and a device for realizing bidirectional synchronous stretching with a single drive input. Background technique [0002] Due to the advantages of high mechanical strength, high elastic modulus, and strong thermal conductivity, carbon nanotubes have attracted extensive attention from researchers and have extremely high application prospects in engineering. In order to study its material mechanical properties, such as elastic modulus, yield strength, etc., it is necessary to conduct a material mechanical tensile test on the specimen. However, carbon nanotubes are anisotropic, and the traditional uniaxial tensile test is not enough to fully study the material mechanical properties of this material. Therefore, it is necessary to design a test platform for bidirectional simultaneous tensioning of...
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IPC IPC(8): G01N3/08
Inventor 高峰何俊孙乔涂善东
Owner SHANGHAI JIAOTONG UNIV