CN112213192A - Multifunctional super-elastic film biaxial tensile test bed - Google Patents
Multifunctional super-elastic film biaxial tensile test bed Download PDFInfo
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- CN112213192A CN112213192A CN202011200683.7A CN202011200683A CN112213192A CN 112213192 A CN112213192 A CN 112213192A CN 202011200683 A CN202011200683 A CN 202011200683A CN 112213192 A CN112213192 A CN 112213192A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0258—Non axial, i.e. the forces not being applied along an axis of symmetry of the specimen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
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- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
The invention discloses a multifunctional biaxial tensile test bed for a super-elastic film, which comprises a workbench, a force sensor, a screw nut mechanism, a transmission mechanism for driving the screw nut mechanism to rotate, a telescopic mechanism driven by the screw nut mechanism to stretch, two angle adjusting mechanisms for adjusting the angles of the telescopic mechanism and a clamping mechanism, wherein the two angle adjusting mechanisms comprise a left angle adjusting mechanism and a right angle adjusting mechanism, the transmission mechanism, the screw nut mechanism and a slideway support are fixedly arranged on the workbench, the transmission mechanism is mutually meshed with the screw nut mechanism, the left angle adjusting mechanism is fixedly arranged at the left end of the screw nut mechanism through the force sensor or the right angle adjusting mechanism is fixedly arranged at the right end of the screw nut mechanism through the force sensor, two ends of the telescopic mechanism are respectively and fixedly connected with the angle adjusting mechanisms, and the clamping mechanism is arranged on the telescopic mechanism in a sliding manner, the device is used for detecting biaxial tensile test items of elastic film materials with different length-width ratios.
Description
Technical Field
The invention relates to a multifunctional biaxial tensile test bed for a hyperelastic film, and belongs to the technical field of experimental equipment.
Background
The equi-biaxial tensile test is a main method for acquiring mechanical and physical properties of an elastic film material, and pre-stretching the elastic film material is also a necessary condition for realizing design function requirements as a main functional part material of a flexible driver and a sensor. The data consult shows that the typical equal biaxial tensile test method suitable for the elastic membrane material mainly comprises three biaxial tensile tests, namely multipoint radial tensile test of a round sheet, expansion tensile test and square film test.
The round thin sheet multipoint radial tensile test device is complex in structure and needs to be manufactured with special samples; the expansion tensile test is difficult to control the strain process, so that the method is difficult to supplement and obtain complete strain data for fitting a superelasticity constitutive equation, and higher requirements are provided for detection due to the fact that deformation of the strain data is not uniform along the spherical contour; the conventional biaxial tensile test such as a square film generally adopts two-point corner fixing, so that the corner of a sample is distorted when the tensile rate of the film is high, and the test precision is influenced.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a multifunctional biaxial stretching test bed for a hyperelastic film, which can be used for detecting biaxial stretching test items of rectangular elastic film materials with different length-width ratios, realizing biaxial stretching tests of isotropic and anisotropic film materials and realizing the requirements of large stroke and quick stretching by the structure.
In order to achieve the above object, the present invention provides a multifunctional biaxial tension test bed for a superelastic film, comprising a worktable, a force sensor, a screw nut mechanism, a driving mechanism for driving the screw nut mechanism to rotate, a telescopic mechanism driven by the screw nut mechanism to stretch, an angle adjusting mechanism for adjusting the angle of the telescopic mechanism, and a clamping mechanism for clamping the elastic film,
the driving mechanism, the lead screw nut mechanism and the slide way support are fixedly arranged on the workbench, the telescopic mechanism is connected with the slide way support in a sliding mode, the angle adjusting mechanism is fixedly arranged on the lead screw nut mechanism through the force sensor, the telescopic mechanism is fixedly connected with the angle adjusting mechanism, and the clamping mechanism is arranged on the telescopic mechanism in a sliding mode.
Preferably, the telescopic mechanism comprises an inner slideway and an outer slideway, both of which comprise a right-angle included angle,
the front end and the rear end of the outer slideway are respectively provided with a slideway through hole matched with the inner slideway, the front end and the rear end of the inner slideway respectively penetrate through the slideway through holes at the front end and the rear end of the outer slideway, the staggered part of the inner slideway and the outer slideway is distributed in a parallelogram shape, and the inner side of the inner slideway and the outer side of the outer slideway are respectively provided with a plurality of clamping mechanisms in a sliding way; the angle adjusting mechanism comprises a left angle adjusting mechanism and a right angle adjusting mechanism, the right angle included angle of the inner slide is fixedly arranged on the left angle adjusting mechanism, the right angle included angle of the outer slide is fixedly arranged on the right angle adjusting mechanism, or the right angle included angle of the inner slide is fixedly arranged on the right angle adjusting mechanism, and the right angle included angle of the outer slide is fixedly arranged on the left angle adjusting mechanism.
Preferably, the screw nut mechanism comprises a left sliding table component and a right sliding table component, the left sliding table component comprises a bevel gear, a sliding base bottom plate, a slide carriage, a screw shaft and a cylindrical guide rail,
the sliding seat bottom plate is fixedly arranged on the workbench, the sliding seat bottom plate is a U-shaped plate, the left end and the right end of the screw shaft are rotatably connected with the left end and the right end of the sliding seat bottom plate, the left end and the right end of the cylindrical guide rail are rotatably connected with the left end and the right end of the sliding seat bottom plate, external threads are arranged on the screw shaft, a slide carriage slide hole matched with the cylindrical guide rail is arranged on the slide carriage, a slide carriage threaded through hole matched with the screw shaft is arranged on the slide carriage, the slide carriage is sleeved with and slidably connected with the cylindrical guide rail, the slide carriage is sleeved with and threadedly connected with the screw shaft, and the screw;
the left sliding table component and the right sliding table component have the same structure, and are symmetrically and fixedly arranged on the workbench; the force sensor is installed at left slip table part and left angle adjustment mechanism installs at right slip table part, perhaps force sensor installs at right slip table part and left angle adjustment mechanism installs on left slip table part.
Preferentially, the driving mechanism comprises a servo motor and a motor support, the servo motor is fixedly arranged on the workbench through the motor support, an output shaft of the servo motor is coaxially and fixedly connected with a driving gear, and the driving gear is meshed with a bevel gear of the left sliding table component and a bevel gear of the right sliding table component respectively.
Preferably, the left angle adjusting mechanism comprises a worm wheel support, a worm wheel, a worm and a pin shaft, a worm wheel groove is formed in the right end of the worm wheel support, the worm wheel is rotatably arranged in the worm wheel groove through the pin shaft, the left end of the outer slideway is fixedly connected with the worm wheel, the middle end of the worm is meshed with the worm wheel, and a worm through hole matched with the worm is formed in the front end of the worm wheel support or the rear end of the worm wheel support;
the left angle adjusting mechanism and the right angle adjusting mechanism are identical in structure, and a worm wheel in the right angle adjusting mechanism is fixedly connected with the outer side of a right-angle included angle of the inner slide way;
the left angle adjusting mechanism is fixedly arranged on the force sensor, and the right angle adjusting mechanism is fixedly arranged on the right sliding table part, or the left angle adjusting mechanism is fixedly arranged on the left sliding table part, and the right angle adjusting mechanism is fixedly arranged on the force sensor.
Preferably, the slide support comprises a front slide support and a rear slide support, the rear slide support comprises a guide rail slide block, the rear end of the outer slide is fixedly connected with the upper end of the guide rail slide block, the front slide support and the rear slide support are identical in structure, and the front end of the outer slide is fixedly connected with the upper end of the guide rail slide block of the front slide support.
Preferably, the clamping mechanism comprises a roller, a roller shaft, a connecting rod, an eccentric wheel, an upper pressing block, a cam connecting rod, a screw, a pin shaft and a convex edge,
the upper end and the lower end of the roller shaft are both rotatably connected with a roller, the middle end of the roller shaft is fixedly connected with one end of a connecting rod, the other end of the connecting rod is provided with a pressing block, the cam connecting rod is waist-shaped, the middle end of the cam connecting rod vertically penetrates through the connecting rod and the upper pressing block, the upper end of the cam connecting rod is rotatably connected with an eccentric wheel through a pin, the lower end of the cam connecting rod is fixedly connected with the connecting rod through a screw, one side of the upper pressing block which is in contact with the connecting rod is fixedly provided with a raised edge, the inner side of an inner slideway is provided with a first roller path which is matched with a clamping mechanism, the outer side of an outer slideway is provided with a second roller path which is.
Preferentially, including L type support and sensor support frame, L type support has two kinds of mounting means:
the first method is as follows: the force sensor is arranged on the left sliding table part through a sensor support frame, and the right angle adjusting mechanism is fixedly connected with a sliding plate of the right sliding table part through an L-shaped support;
the second method comprises the following steps: the force sensor is installed on the right sliding table part through a sensor support frame, and the left angle adjusting mechanism is fixedly connected with the slide carriage of the left sliding table part through an L-shaped support.
Preferentially, the sensor support frame comprises a sensor bracket, a sensor support and a sensor connecting block, the sensor support is fixedly arranged on the screw nut mechanism, the sensor bracket is fixedly connected with the sensor support through a plurality of bolts, a force sensor is fixedly arranged at the upper end of the sensor support, the sensor connecting block is fixedly arranged at the upper end of the force sensor, and the sensor connecting block is fixedly connected with the left angle adjusting mechanism or the right angle adjusting mechanism;
the lower end of the force sensor is fixedly connected with the left sliding table component or the right sliding table component through the sensor support, and the upper end of the force sensor is fixedly connected with the left angle adjusting mechanism or the right angle adjusting mechanism through the sensor connecting block.
The invention achieves the following beneficial effects:
the servo motor transmits rotary motion to the sliding table screw rod shaft through the bevel gear, the rotary motion is converted into linear motion of the slide carriage along the cylindrical guide rail through the screw rod nut mechanism, the slide carriage is driven to move left and right through the motion of the servo motor so as to drive the inner slide way and the outer slide way to open and close, the requirements of large stroke and rapid stretching of a hyperelastic film material can be met, and the force sensor tests the tension of a film clamped between the inner slide way and the outer slide way; the bottom of the upper pressure plate is provided with a convex edge for clamping a sample to be tested or a membrane material, and the convex edge can reduce the clamping area of the sample to be tested or the membrane material, improve the test precision and prevent the film from loosening; the guide rail support can adjust the up-down position so as to adjust the height of the outer slideway, and the round rod can assist in supporting the outer slideway; a worm wheel and a worm are designed in the worm wheel support, so that the rotation angles of the inner slideway and the outer slideway can be adjusted, and the biaxial tension test of elastic film materials with different length-width ratios can be realized; the sliding seat bottom plate is positioned and tightly attached to the workbench and can be finely adjusted along the longitudinal direction so as to reduce the manufacturing and mounting errors of the bevel gear kinematic pair; the invention can apply various displacement loads to the rectangular elastic film, carry out biaxial plane tensile tests with different length-width ratios including equiaxial of the elastic film, and carry out various material pre-stretching operations of the film.
Drawings
FIG. 1 is a perspective view of the present device;
FIG. 2 is a perspective view of the drive mechanism of the present device;
FIG. 3 is a perspective view of a screw-nut mechanism in the present device;
FIG. 4 is a perspective view of the telescoping mechanism of the present device;
FIG. 5 is a perspective view of the clamping mechanism of the present device;
FIG. 6 is a perspective view of the upper press block of the apparatus;
FIG. 7 is a perspective view of the support mechanism of the present device;
FIG. 8 is a perspective view of the sensor support of the present device;
fig. 9 is an exploded view of the clamping mechanism in the present device.
The reference in the drawing indicates 1-servo motor; 2-a workbench; 21-a motor support; 3-a force sensor; 31-a sensor support; 32-sensor connection block; 4-an angle adjustment mechanism; 41-a worm gear; 42-a worm; 43-pin shaft; 44-a worm gear support; 5-an inner slideway; 6-a clamping mechanism; 61-a roller; 62-roller shaft; 63-connecting rod; 64-eccentric wheel; 65-pressing the blocks; 66-cam connecting rods; 67-raised edges; 7-outer slide way; an 8-L shaped scaffold; 9-a lead screw nut mechanism; 91-a slide base plate; 92-slide carriage; 93-a screw shaft; 94-cylindrical guide rail; 10-a slideway support; 11-a bevel gear; 33 a sensor carrier; 101-a guide rail support; 102-a rail slider; 103-round bar; 104-bracket.
Detailed Description
The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example one
It should be noted that, if there is a directional indication (such as up, down, left, right, front, and back) in the embodiment of the present invention, it is only used to explain the relative position relationship between the components, the motion situation, and the like in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
A multifunctional biaxial tensile test bed for a hyperelastic film comprises a workbench 2, a force sensor 3, a screw nut mechanism 9, a driving mechanism for driving the screw nut mechanism 9 to rotate, a telescopic mechanism driven by the screw nut mechanism 9 to stretch, an angle adjusting mechanism 4 for adjusting the angle of the telescopic mechanism and a clamping mechanism for clamping the elastic film,
the driving mechanism, the lead screw nut mechanism 9 and the slide way support 10 are fixedly arranged on the workbench 2, the telescopic mechanism is connected with the slide way support 10 in a sliding mode, the angle adjusting mechanism 4 is fixedly arranged on the lead screw nut mechanism 9 through the force sensor 3, the telescopic mechanism is fixedly connected with the angle adjusting mechanism 4, and the clamping mechanism is arranged on the telescopic mechanism in a sliding mode.
Furthermore, the telescopic mechanism comprises an inner slideway 5 and an outer slideway 7, the inner slideway 5 and the outer slideway 7 both comprise a right angle included angle,
the front end and the rear end of the outer slideway 7 are respectively provided with a slideway through hole matched with the inner slideway 5, the front end and the rear end of the inner slideway 5 respectively penetrate through the slideway through holes at the front end and the rear end of the outer slideway 7, the staggered positions of the inner slideway 5 and the outer slideway 7 are distributed in a parallelogram shape, and the inner side of the inner slideway 5 and the outer side of the outer slideway 7 are respectively provided with a plurality of clamping mechanisms in a sliding way; the angle adjusting mechanism 4 comprises a left angle adjusting mechanism and a right angle adjusting mechanism, the right angle included angle of the inner slide 5 is fixedly arranged on the left angle adjusting mechanism, the right angle included angle of the outer slide 7 is fixedly arranged on the right angle adjusting mechanism, or the right angle included angle of the inner slide 5 is fixedly arranged on the right angle adjusting mechanism, and the right angle included angle of the outer slide 7 is fixedly arranged on the left angle adjusting mechanism.
Further, the screw nut mechanism 9 includes a left slide table part and a right slide table part, the left slide table part includes a bevel gear 11, a slide base plate 91, a slide carriage 92, a screw shaft 93 and a cylindrical guide rail 94,
the slide base plate 91 is fixedly arranged on the workbench 2, the slide base plate 91 is a U-shaped plate, the left end and the right end of the screw shaft 93 are rotatably connected with the left end and the right end of the slide base plate 91, the left end and the right end of the cylindrical guide rail 94 are rotatably connected with the left end and the right end of the slide base plate 91, the screw shaft 93 is provided with an external thread, the slide carriage 92 is provided with a slide carriage sliding hole matched with the cylindrical guide rail 94, the slide carriage 92 is provided with a slide carriage threaded through hole matched with the screw shaft 93, the slide carriage 92 is sleeved and slidably connected with the cylindrical guide rail 94, the slide carriage 92 is sleeved and threadedly connected with the screw shaft 93, and the screw shaft 93 penetrates through the right end of the;
the left sliding table component and the right sliding table component have the same structure and are symmetrically and fixedly arranged on the workbench 2; force sensor 3 installs at left slip table part and left angle adjustment mechanism installs at right slip table part, perhaps force sensor 3 installs at right slip table part and left angle adjustment mechanism installs on left slip table part.
Further, the driving mechanism comprises a servo motor 1 and a motor support 21, the servo motor 1 is fixedly arranged on the workbench 2 through the motor support 21, an output shaft of the servo motor 1 is coaxially and fixedly connected with a driving gear, and the driving gear is meshed with the bevel gear 11 of the left sliding table component and the bevel gear 11 of the right sliding table component respectively.
Further, the left angle adjusting mechanism comprises a worm wheel support 44, a worm wheel 41, a worm 42 and a pin shaft 43, a worm wheel groove is formed in the right end of the worm wheel support 44, the worm wheel 41 is rotatably arranged in the worm wheel groove through the pin shaft 43, the left end of the outer slideway 7 is fixedly connected with the worm wheel 41, the middle end of the worm 42 is meshed with the worm wheel 41, and a worm through hole matched with the worm 42 is formed in the front end of the worm wheel support 44 or the rear end of the worm wheel support 44;
the left angle adjusting mechanism and the right angle adjusting mechanism have the same structure, and a worm wheel 41 in the right angle adjusting mechanism is fixedly connected with the outer side of a right-angle included angle of the inner slide way 5;
the left angle adjusting mechanism is fixedly arranged on the force sensor 3, and the right angle adjusting mechanism is fixedly arranged on the right sliding table part, or the left angle adjusting mechanism is fixedly arranged on the left sliding table part, and the right angle adjusting mechanism is fixedly arranged on the force sensor 3.
Further, the slide rail bracket 10 comprises a front slide rail bracket and a rear slide rail bracket, the rear slide rail bracket comprises two guide rail supports 101, a guide rail slide block 102, a round rod 103 and two brackets 104, the two brackets 104 are fixedly arranged at the left end and the right end of the rear side of the workbench 2, the guide rail slide block 102 and the round rod 103 are positioned at the lower side of the outer slide rail 7, guide rails are arranged on the two brackets 104, the two guide rail supports 101 are detachably and fixedly connected with the guide rails through screws, two ends of the round rod 103 are respectively and fixedly connected with the guide rail supports 101, the guide rail slide block 102 is sleeved and slidably connected with the round rod 103, and the rear end of the outer slide rail 7 is;
the front slideway support and the rear slideway support are identical in structure, and the front end of the outer slideway 7 is fixedly connected with the upper end of the front slideway support.
Further, the clamping mechanism comprises a roller 61, a roller shaft 62, a connecting rod 63, an eccentric wheel 64, an upper pressing block 65, a cam connecting rod 66, a screw, a pin shaft and a convex edge 67,
the upper end and the lower end of the roller shaft 62 are rotatably connected with a roller 61, the middle end of the roller shaft 62 is fixedly connected with one end of a connecting rod 63, the other end of the connecting rod 63 is provided with an upper pressing block 65, the cam connecting rod is kidney-shaped, the cam connecting rod 66 is kidney-shaped, the middle end of the cam connecting rod 66 vertically penetrates through the connecting rod 63 and the upper pressing block 65, the upper end of the cam connecting rod 66 is rotatably connected with an eccentric wheel 64 through a pin, the lower end of the cam connecting rod 66 is fixedly connected with the connecting rod 63 through a screw, a protruding ridge 67 is fixedly arranged on one surface of the upper pressing block 65 which is in contact with the connecting rod 63, the inner side of the inner slideway 5 is provided with a first roller path matched with a clamping mechanism, the outer side of the outer slideway 7 is provided with a.
Further, including L type support 8 and sensor support frame, L type support 8 has two kinds of mounting means:
the first method is as follows: the force sensor 3 is arranged on the left sliding table part through a sensor support frame, and the right angle adjusting mechanism is fixedly connected with a slide carriage 92 of the right sliding table part through an L-shaped support 8;
the second method comprises the following steps: the force sensor 3 is arranged on the right sliding table part through a sensor support frame, and the left angle adjusting mechanism is fixedly connected with a slide carriage 92 of the left sliding table part through an L-shaped support 8.
Further, the sensor support frame comprises a sensor bracket 33, a sensor support 31 and a sensor connecting block 32, the sensor support 31 is fixedly arranged on the screw nut mechanism 9, the sensor bracket 33 is fixedly connected with the sensor support 31 through a plurality of bolts, the upper end of the sensor support 31 is fixedly provided with the force sensor 3, the upper end of the force sensor 3 is fixedly provided with the sensor connecting block 32, and the sensor connecting block 32 is fixedly connected with the left angle adjusting mechanism or the right angle adjusting mechanism;
the lower end of the force sensor 3 is fixedly connected with a left sliding table component or a right sliding table component through a sensor support 31, and the upper end of the force sensor 3 is fixedly connected with a left angle adjusting mechanism or a right angle adjusting mechanism through a sensor connecting block 32.
The working table 2 can be a four-corner table in the prior art, the worm wheel support is a rectangular plate, the inner slideway 5 and the outer slideway 7 are V-shaped rods or vertically-penetrating quadrilateral rods, the slide carriage 92 is a planar plate or a plate with a T-shaped cross section, the sensor support 31 is an L-shaped plate, the sensor connecting block 32 is a planar plate, the sensor bracket 33 is an L-shaped plate, the screw shaft 93 is a cylindrical rod provided with external threads, the cylindrical guide rail 94 is a cylindrical smooth rod, the motor support 21 is a cylindrical plate with upper and lower bottom surfaces penetrating, the two guide rail supports 101 are T-shaped clamping rods, the guide rail slide block 102 is a block provided with a through hole in the front-back direction, the round rod 103 is a smooth rod, the two supports 104 are smooth rods, the connecting rod 63 is a rectangular rod, the upper pressing block 65 is a planar plate, the raised edge 67 is a rectangular rod or a quadrangular or, the L-shaped bracket 8 is an L-shaped rod member. The servo motor 1, the force sensor 3, the bevel gear 11, the driving gear, the worm wheel 41, the worm 42, the pin shaft 43, the roller 61, the roller shaft 62 and the eccentric wheel 64 belong to the prior art, the types of the above components which can be used in the prior art are many, and those skilled in the art can select the appropriate type according to actual requirements, and the embodiment is not illustrated.
In the embodiment, a right-angle included angle of an inner slide way 5 is fixedly arranged on a left angle adjusting mechanism, a right-angle included angle of an outer slide way 7 is fixedly arranged on a right angle adjusting mechanism, a force sensor 3 is fixedly arranged on a left slide way part through a sensor support 31, the upper end of the force sensor 3 is fixedly connected with the left angle adjusting mechanism through a sensor connecting block 32, the right angle adjusting mechanism is fixedly arranged on the right slide way part through an L-shaped support 8, the inner slide way and the outer slide way are composed of two support arms which are 90 degrees, the outer slide way is of a hollow structure, the support arms of an inner slide way frame and the support arms of the outer slide way frame are staggered into a plane rectangle, and the inner slide way penetrates through a rectangular hole of the; the inner slideway and the outer slideway are provided with chucks which can move along the slideways and are used for clamping the film samples, and the chucks at the right angles of the slideways are fixed; the worm wheel support is installed in the outer side of the right angle of the inner slide way 5 and the outer slide way 7, is used for adjusting the installation angle of the support arm of the worm wheel support, and is connected with the sliding table parts on the left side and the right side through the L-shaped support and the force sensor respectively.
The left sliding table component and the right sliding table component are installed on the workbench 2 in a linear opposite mode, the power sources of the left sliding table component and the right sliding table component are servo motors 1 at the lower end of the workbench, and power is transmitted by bevel gears 11; the two pairs of adjustable slide supports are arranged on the workbench and distributed on two sides of the left sliding table part and the right sliding table part, and the inner slide 5 and the outer slide 7 are supported by adjusting the mounting heights of the front slide support and the rear slide support.
The servo motor 1 is connected with the workbench 2 through a motor support 21, the servo motor 1 serves as a driving device, the motion of the servo motor is transmitted to the sliding table part 10 on the workbench surface through a bevel gear 11 pair, and the sliding plate 92 is driven through a screw shaft 93 to drive the inner slide way and the outer slide way to move oppositely. Through external electrical control system, control servo motor 1 just, reversal and speed change, realize the tensile position of film biax, speed control, slide bottom plate 91 location, slide bottom plate 91 pastes closely on workstation 2, and slide bottom plate 91 can be followed vertical micro-displacement in order to adjust bevel gear 11 kinematic pair transmission clearance. The force sensor 3 is arranged on a sensor support 31 and is connected with a worm wheel bracket on the outer slideway 7 through a sensor connecting block 32. The force measuring direction of the force sensor 3 is consistent with the moving direction of the slide carriage 92 on the sliding table component 9, and an external controller controls the speed and the direction of the servo motor 1 to realize stretching and retracting movements with different speeds required by the elastic film material stretching test. The servo motor 1 transmits the rotary motion to the sliding table screw shaft 93 through the bevel gear 11, and converts the rotary motion into the linear motion of the slide carriage 92 along the cylindrical guide rail 94 through the screw nut mechanism, and the slide carriage 92 is provided with the L-shaped bracket 8 and the sensor support 31 to drive the inner slide 5 and the outer slide 7 to longitudinally reciprocate, so that the film stretching action is realized.
The inner slideway 5 and the outer slideway 7 are respectively composed of two L-shaped supporting arms which form a right angle with each other, the first raceway of the inner slideway 5 is arranged on the inner side, the second raceway of the outer slideway 7 is arranged on the outer side, and the roller 61 is arranged at the tail part of the chuck 6 and rolls on the slideways during stretching. The outer slideway 7 is designed into a hollow structure, the inner slideway 5 penetrates through a rectangular hole of the outer slideway 7, and the support arms of the inner slideway 5 and the outer slideway 7 form a 90-degree angle. The right angles of the inner slideway 5 and the outer slideway 7 are respectively provided with a worm wheel bracket, and the slideways can rotate by rotating angles along the pin shaft 43 so as to adapt to the stretching of films with different lengths and widths, and the angle is adjusted by a worm wheel 41 and a worm 42. The chucks at the right angles of the inner slideway 5 and the outer slideway 7 are fixed and do not roll on the slideways when being stretched, and the chuck 6 of the clamping mechanism rolls on the inner slideway 5 and the outer slideway 7 at the intersection of the two slideways.
The upper end and the lower end of the roller shaft 62 are provided with rollers 61, the connecting rod 63 is used as a lower pressing plate of a clamping head, a sample or a diaphragm material to be tested is placed between the connecting rod 63 and the upper pressing plate 65, and the eccentric wheel 64 is rotated to rapidly clamp the sample or the diaphragm material to be tested. There is a protruding arris 67 in top board 65 bottom to press from both sides tightly and treats sample or diaphragm material, can reduce the clamping area who treats sample or diaphragm material, improves experimental precision, and protruding arris 67 length of control simultaneously makes and forms the barb after pressing from both sides tight sample, prevents that the film from taking off.
Two slide way supports 10 are arranged in parallel on both sides of the left and right slide way parts. The round rod 103 penetrates through the guide rail sliding block 102, two sides of the round rod 103 are fixed on the aluminum profile bracket 104 through the guide rail support 101, the guide rail support 101 can adjust the up-down position so as to adjust the height of the outer slideway 7, and the round rod 103 assists in supporting the outer slideway 5; the slideway support 10 can also be designed with a T-shaped groove to transversely adjust the installation position along the surface of the workbench 2 so as to adapt to the angle change of the supporting arm of the outer slideway 7.
The worm wheel 41 and the worm 42 are designed in the worm wheel support, the rotation angles of the inner slide way 5 and the outer slide way 7 are adjusted, the biaxial tensile test of elastic film materials with different length-width ratios is realized, the chucks 6 are fixed at the right angles of the inner slide way 5 and the outer slide way 7, the chucks 6 are arranged at the staggered positions of the inner slide way 5 and the outer slide way 7 and move on the inner slide way 5 and the outer slide way 7 simultaneously, the corner single-point fixed tension is realized, and the test precision is improved.
The servo motor 1 drives the slide carriages 92 on the two sliding table parts 9 to realize opposite movement through the bevel gear 11, and can meet the requirements of large stroke and rapid stretching on super-elastic film materials; the invention realizes biaxial stretching by uniaxial driving. In the biaxial tensile test process, the inner slideway 5 is driven by a sliding table part to stretch the rectangular film, the outer slideway 7 is used for detecting the change value of the force in the stretching process by installing the force sensor 3, detecting and acquiring the film deformation value corresponding to the tensile force by manpower or an additionally-installed optical displacement measuring system, and obtaining the constitutive model of the material after data processing and calculation. The invention can apply various displacement loads to the rectangular elastic film, carry out biaxial plane tensile tests with different length-width ratios including equiaxial of the elastic film, and carry out various material pre-stretching operations of the film.
Example two
Different from the first embodiment, in this embodiment, the right angle included angle of the inner slide 5 is fixedly arranged on the right angle adjusting mechanism, the right angle included angle of the outer slide 7 is fixedly arranged on the left angle adjusting mechanism, the force sensor 3 is fixedly arranged on the left sliding table part through the sensor support 31, the upper end of the force sensor 3 is fixedly connected with the left angle adjusting mechanism through the sensor connecting block 32, and the right angle adjusting mechanism is fixedly arranged on the right sliding table part through the L-shaped support 8.
EXAMPLE III
Different from the first embodiment, in this embodiment, the right angle included angle of the inner slide 5 is fixed to be set up on left angle adjustment mechanism, the right angle included angle of the outer slide 7 is fixed to be set up on right angle adjustment mechanism, force sensor 3 passes through sensor support 31 fixed mounting at right slip table part, force sensor 3 upper end is through sensor connecting block 32 fixed connection right angle adjustment mechanism, left angle adjustment mechanism passes through 8 fixed mounting at left slip table parts of L type support.
Example four
Different from the first embodiment, in this embodiment, the right angle included angle of the inner slide 5 is fixedly arranged on the right angle adjusting mechanism, the right angle included angle of the outer slide 7 is fixedly arranged on the left angle adjusting mechanism, the force sensor 3 is fixedly arranged on the right sliding table part through the sensor support 31, the upper end of the force sensor 3 is fixedly connected with the right angle adjusting mechanism through the sensor connecting block 32, and the left angle adjusting mechanism is fixedly arranged on the left sliding table part through the L-shaped support 8.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A multifunctional biaxial stretching test bed for a hyperelastic film is characterized by comprising a workbench (2), a force sensor (3), a screw nut mechanism (9), a driving mechanism for driving the screw nut mechanism (9) to rotate, a telescopic mechanism driven by the screw nut mechanism (9) to stretch, an angle adjusting mechanism (4) for adjusting the angle of the telescopic mechanism and a clamping mechanism for clamping the elastic film,
the driving mechanism, the lead screw nut mechanism (9) and the slide way support (10) are fixedly arranged on the workbench (2), the telescopic mechanism is connected with the slide way support (10) in a sliding mode, the angle adjusting mechanism (4) is fixedly arranged on the lead screw nut mechanism (9) through the force sensor (3), the telescopic mechanism is fixedly connected with the angle adjusting mechanism (4), and the clamping mechanism is arranged on the telescopic mechanism in a sliding mode.
2. The multifunctional biaxial stretching test bed for superelastic films according to claim 1, wherein the telescoping mechanism comprises an inner slide (5) and an outer slide (7), the inner slide (5) and the outer slide (7) both comprise a right angle,
the front end and the rear end of the outer slideway (7) are respectively provided with a slideway through hole matched with the inner slideway (5), the front end and the rear end of the inner slideway (5) respectively penetrate through the slideway through holes at the front end and the rear end of the outer slideway (7), the staggered positions of the inner slideway (5) and the outer slideway (7) are distributed in a parallelogram shape, and the inner side of the inner slideway (5) and the outer side of the outer slideway (7) are respectively provided with a plurality of clamping mechanisms in a sliding manner; the angle adjusting mechanism (4) comprises a left angle adjusting mechanism and a right angle adjusting mechanism, the right angle included angle of the inner slide (5) is fixedly arranged on the left angle adjusting mechanism, the right angle included angle of the outer slide (7) is fixedly arranged on the right angle adjusting mechanism, or the right angle included angle of the inner slide (5) is fixedly arranged on the right angle adjusting mechanism, and the right angle included angle of the outer slide (7) is fixedly arranged on the left angle adjusting mechanism.
3. The multifunctional biaxial stretching test bed for the superelasticity film as per claim 2, wherein the lead screw nut mechanism (9) comprises a left sliding table component and a right sliding table component, the left sliding table component comprises a bevel gear (11), a sliding base bottom plate (91), a slide carriage (92), a lead screw shaft (93) and a cylindrical guide rail (94), the sliding base bottom plate (91) is fixedly arranged on the workbench (2), the sliding base bottom plate (91) is a U-shaped plate, the left end and the right end of the lead screw shaft (93) are rotatably connected with the left end and the right end of the sliding base bottom plate (91), the left end and the right end of the cylindrical guide rail (94) are rotatably connected with the left end and the right end of the sliding base bottom plate (91), the lead screw shaft (93) is provided with external threads, the slide carriage (92) is provided with slide carriage sliding holes matched with the cylindrical guide rail (94), the slide carriage (92) is provided with slide carriage threaded through holes matched with the lead screw shaft (93), and the slide, the slide carriage (92) is sleeved and connected with a screw shaft (93) in a threaded manner, and the screw shaft (93) penetrates through the right end of the sliding base bottom plate (91) and is coaxially and fixedly connected with a bevel gear (11); the left sliding table component and the right sliding table component have the same structure, and are symmetrically and fixedly arranged on the workbench (2); force sensor (3) are installed at left slip table part and left angle adjustment mechanism is installed at right slip table part, perhaps force sensor (3) are installed at right slip table part and left angle adjustment mechanism is installed on left slip table part.
4. The multifunctional biaxial stretching test bed for the superelastic film according to claim 3, wherein the driving mechanism comprises a servomotor (1) and a motor support (21), the servomotor (1) is fixedly arranged on the worktable (2) through the motor support (21), an output shaft of the servomotor (1) is coaxially and fixedly connected with a driving gear, and the driving gear is respectively meshed with the bevel gear (11) of the left sliding table component and the bevel gear (11) of the right sliding table component.
5. The multifunctional biaxial stretching test bed for the superelasticity film as claimed in claim 3, wherein the left angle adjusting mechanism comprises a worm gear support (44), a worm gear (41), a worm (42) and a pin shaft (43), a worm gear groove is formed in the right end of the worm gear support (44), the worm gear (41) is rotatably arranged in the worm gear groove through the pin shaft (43), the worm gear (41) is fixedly connected to the left end of the outer slideway (7), the middle end of the worm (42) is meshed with the worm gear (41), and a worm through hole matched with the worm (42) is formed in the front end of the worm gear support (44) or the rear end of the worm gear support (44); the left angle adjusting mechanism and the right angle adjusting mechanism have the same structure, and a worm wheel (41) in the right angle adjusting mechanism is fixedly connected with the outer side of a right-angle included angle of the inner slide way (5);
the left angle adjusting mechanism is fixedly arranged on the force sensor (3) and the right angle adjusting mechanism is fixedly arranged on the right sliding table part, or the left angle adjusting mechanism is fixedly arranged on the left sliding table part and the right angle adjusting mechanism is fixedly arranged on the force sensor (3).
6. The multifunctional biaxial stretching test bed for the superelasticity film according to claim 2, wherein the slide way support (10) comprises a front slide way support and a rear slide way support, the rear slide way support comprises a guide rail sliding block (102), the rear end of the outer slide way (7) is fixedly connected with the upper end of the guide rail sliding block (102), the front slide way support and the rear slide way support have the same structure, and the front end of the outer slide way (7) is fixedly connected with the upper end of the guide rail sliding block (102) of the front slide way support.
7. The multifunctional biaxial stretching test bench for superelastic films according to claim 1, wherein the clamping mechanism comprises a roller (61), a roller shaft (62), a connecting rod (63), an eccentric wheel (64), an upper pressing block (65), a cam connecting rod (66), a screw, a pin and a convex rib (67), wherein the upper end and the lower end of the roller shaft (62) are rotatably connected with one roller (61), the middle end of the roller shaft (62) is fixedly connected with one end of the connecting rod (63), the other end of the connecting rod (63) is provided with the upper pressing block (65), the cam connecting rod (66) is waist-shaped, the middle end of the cam connecting rod (66) vertically penetrates through the connecting rod (63) and the upper pressing block (65), the upper end of the cam connecting rod (66) is rotatably connected with the eccentric wheel (64) through the pin, the lower end of the cam connecting rod (66) is fixedly connected with the connecting rod (63) through the screw, one surface of the upper pressing block (65, the inner side of the inner slideway (5) is provided with a first raceway matched with the clamping mechanism, the outer side of the outer slideway (7) is provided with a second raceway matched with the clamping mechanism, the first raceway is internally and slidably connected with rollers (61) of a plurality of clamping mechanisms, and the second raceway is internally and slidably connected with rollers (61) of a plurality of clamping mechanisms.
8. A multifunctional biaxial stretching test bed for superelastic film as claimed in claim 3, characterized by comprising L-shaped support (8) and sensor support frame, L-shaped support (8) has two mounting modes:
the first method is as follows: the force sensor (3) is arranged on the left sliding table component through a sensor support frame, and the right angle adjusting mechanism is fixedly connected with a sliding plate (92) of the right sliding table component through an L-shaped support (8);
the second method comprises the following steps: the force sensor (3) is arranged on the right sliding table part through a sensor supporting frame, and the left angle adjusting mechanism is fixedly connected with a slide carriage (92) of the left sliding table part through an L-shaped support (8).
9. The multifunctional biaxial stretching test bed for the superelastic film according to claim 8, wherein the sensor support frame comprises a sensor bracket (33), a sensor support (31) and a sensor connecting block (32), the sensor support (31) is fixedly arranged on the screw-nut mechanism (9), the sensor bracket (33) is fixedly connected with the sensor support (31) through a plurality of bolts, the upper end of the sensor support (31) is fixedly provided with the force sensor (3), the upper end of the force sensor (3) is fixedly provided with the sensor connecting block (32), and the sensor connecting block (32) is fixedly connected with the left angle adjusting mechanism or the right angle adjusting mechanism; the lower end of the force sensor (3) is fixedly connected with the left sliding table component or the right sliding table component through a sensor support (31), and the upper end of the force sensor (3) is fixedly connected with the left angle adjusting mechanism or the right angle adjusting mechanism through a sensor connecting block (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011200683.7A CN112213192A (en) | 2020-11-02 | 2020-11-02 | Multifunctional super-elastic film biaxial tensile test bed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011200683.7A CN112213192A (en) | 2020-11-02 | 2020-11-02 | Multifunctional super-elastic film biaxial tensile test bed |
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| CN112213192A true CN112213192A (en) | 2021-01-12 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113376312A (en) * | 2021-06-08 | 2021-09-10 | 广东优科检测认证有限公司 | Height-adjustable positioning combustion device of combustion testing machine |
| CN113865979A (en) * | 2021-09-10 | 2021-12-31 | 青岛彩意科技集团有限公司 | Clamping mechanism for tensile strength test of new material |
| CN114965060A (en) * | 2022-06-20 | 2022-08-30 | 广东嘉元科技股份有限公司 | Opposite-pulling device, detection device, electrolytic copper foil generating machine and test method thereof |
| CN115014941A (en) * | 2022-06-02 | 2022-09-06 | 广东嘉元科技股份有限公司 | Copper foil online detection method and device suitable for single-opening detection mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376312A (en) * | 2021-06-08 | 2021-09-10 | 广东优科检测认证有限公司 | Height-adjustable positioning combustion device of combustion testing machine |
| CN113865979A (en) * | 2021-09-10 | 2021-12-31 | 青岛彩意科技集团有限公司 | Clamping mechanism for tensile strength test of new material |
| CN115014941A (en) * | 2022-06-02 | 2022-09-06 | 广东嘉元科技股份有限公司 | Copper foil online detection method and device suitable for single-opening detection mechanism |
| CN114965060A (en) * | 2022-06-20 | 2022-08-30 | 广东嘉元科技股份有限公司 | Opposite-pulling device, detection device, electrolytic copper foil generating machine and test method thereof |
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