CN109596424B - Tension testing device - Google Patents
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- CN109596424B CN109596424B CN201910012413.4A CN201910012413A CN109596424B CN 109596424 B CN109596424 B CN 109596424B CN 201910012413 A CN201910012413 A CN 201910012413A CN 109596424 B CN109596424 B CN 109596424B
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- 238000012360 testing method Methods 0.000 title abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 230000002195 synergetic effect Effects 0.000 claims abstract description 7
- 238000009864 tensile test Methods 0.000 claims description 19
- 230000004907 flux Effects 0.000 claims description 16
- 230000033001 locomotion Effects 0.000 claims description 13
- 230000004044 response Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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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
- 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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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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
- G01N2203/003—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
- G01N2203/026—Specifications of the specimen
- G01N2203/0296—Welds
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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
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application discloses a tensile force testing device, which comprises a fixed component and a movable component, wherein the fixed component is fixedly arranged on a table top of a machine table, the movable component comprises a driving part and a movable part, a first end of the movable part is arranged on a first end of the driving part, a second end of the driving part is fixedly connected with the fixed component, and the movable part moves up and down and/or left and right under the synergistic effect of the fixed component and the driving part; the second end of the movable part is provided with a crochet hook, and the crochet hook pulls the metal wire to be tested for tensile force under the drive of the movable part. According to the tension testing device, the movable part moves up and down and/or left and right through the synergistic effect of the fixed component and the movable component comprising the driving part and the movable part, so that the movable part drives the crochet hook at the end part to pull the metal wire to be tested, the response speed is high, the direction of the crochet hook can be accurately controlled, and the accurate control is performed on the pulling.
Description
Technical Field
The invention belongs to the field of welding, and relates to a tension testing device.
Background
In industrial production such as wafer or semiconductor bonding, wire bonding is required, and after wire bonding is completed, it is required to test whether wire bonding is strong by a tensile testing device.
The traditional tension testing device drives the movable part hooked on the metal wire to move through the air cylinder, but the mode is limited by the air cylinder, the response speed is low during testing, and the tension cannot be accurately controlled.
Disclosure of Invention
The invention provides a tension testing device, which aims to solve the problems that the traditional tension testing device drives a movable part hooked with a metal wire to move through an air cylinder, but the mode is limited by the air cylinder, the response speed is low during testing, and the tension cannot be accurately controlled. The technical proposal is as follows:
a tensile testing device, the tensile testing device comprising: the movable component comprises a driving part and a movable part, a first end of the movable part is arranged on the first end of the driving part, a second end of the driving part is fixedly connected with the fixed component, and the movable part moves up and down and/or left and right under the synergistic effect of the fixed component and the driving part; the second end of the movable part is provided with a crochet hook, and the crochet hook pulls the metal wire to be tested for tensile force under the drive of the movable part.
The movable part moves up and down and/or left and right through the synergistic effect of the fixed component and the movable component comprising the driving part and the movable part, so that the movable part drives the crochet hook at the end part to pull the metal wire of which the tensile force is to be tested, the response speed is high, the direction of the crochet hook can be accurately controlled, and the pulling is accurately controlled.
Optionally, the driving part is provided with a first coil, the fixed assembly comprises a first magnet, the first coil is arranged in a first magnetic field of the first magnet, and lorentz force in the vertical direction is generated after the first coil is electrified to drive the movable part to move up and down.
The voice coil motor is formed by the first magnet and the first coil, so that the response speed is high, and the magnitude of the Lorentz force in the vertical direction can be accurately controlled by controlling the magnitude of the current.
Optionally, the fixing assembly further includes a first magnetic conductive block, the first magnet is fixedly mounted on the first magnetic conductive block, and the first magnetic conductive block is used for increasing the magnetic flux density of the first magnetic field.
The first magnet is fixed through the first magnetic conduction block, so that the magnetic flux density of the first magnetic field is increased, and the magnetic flux density meeting production requirements can be achieved by using less magnet materials, so that the use cost of the magnet materials is reduced.
Optionally, the driving part is provided with a second coil, the fixed component comprises a second magnet, the second coil is arranged in a second magnetic field of the second magnet, and lorentz force in a left-right direction is generated after the second coil is electrified to drive the movable part to move left and right.
The voice coil motor is formed by the second magnet and the second coil, so that the response speed is high, and the magnitude of the Lorentz force in the left-right direction can be accurately controlled by controlling the magnitude of the current.
Optionally, the fixing assembly further includes a second magnetic conductive block, and the second magnet is fixedly installed on the second magnetic conductive block, and the second magnetic conductive block is used for increasing the magnetic flux density of the second magnetic field.
The second magnet is fixed through the second magnetic conduction block, so that the magnetic flux density of the second magnetic field is increased, and the magnetic flux density meeting the production requirement can be achieved by using less magnet materials, thereby reducing the use cost of the magnet materials.
Optionally, the tension testing device further comprises a tension spring, one end of the tension spring is connected to the fixed component, and the other end of the tension spring is connected to the movable component; the tension spring generates tension to attach the movable component to the fixed component.
The movable component and the fixed component are more attached through the tension of the tension spring, so that the force generated by the synergistic action of the fixed component and the driving part can act on the movable part to move up and down or left and right.
Optionally, the second end of the driving part is fixed on the fixed component through the cooperation of the bolt and the screw thread, and the connection position of the bolt and the screw thread is the fulcrum of the up-and-down movement of the movable component.
The driving part is fixed with the fixed component through the bolt and the thread, and the connecting position of the bolt and the thread is used as a fulcrum of the up-and-down movement of the movable component, so that the movable component can move up and down based on the connecting position of the bolt and the thread.
Optionally, the upper and lower sides of the movable assembly are respectively provided with a plate spring, and the plate springs are used for providing elasticity in the upper and lower directions.
The spring provides the upward and downward elasticity, and the downward elasticity is provided when the crochet hook at the front end of the movable part is tilted, so that the high tilting of the broken metal wire of the crochet hook is avoided.
Optionally, a flexible hinge is arranged at the connection part of the first end of the driving part and the movable part, and the flexible hinge is used for providing a return force in the left-right direction; the flexible hinge is a fulcrum of the left-right movement of the movable assembly.
The movable assembly rotates by taking the flexible hinge as a rotation center through the return force of the flexible hinge, and the opposite elastic force is provided when the movable part moves left and right so as to reset the movable part.
Optionally, the movable part of the movable assembly further comprises a length adjuster for adjusting the extension length of the crochet hook.
The extension length of the crochet hook is adjusted through the length adjuster, so that the crochet hook can adapt to tension tests of metal wires at different positions.
Optionally, the fixing assembly further includes a photoelectric sensor for detecting whether the wire is broken, and the photoelectric sensor is disposed at a position corresponding to the movable portion.
By providing a photoelectric sensor at a position corresponding to the movable portion, whether or not the wire is broken can be detected.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a tensile testing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a movable assembly provided by one embodiment of the present invention;
FIG. 3 is a schematic illustration of a securing assembly provided in accordance with one embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the installation of a first magnet and a first magnetic conductive block according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating the installation of the second magnet and the second magnetic conductive block according to an embodiment of the present invention.
Wherein, the reference numerals are as follows:
10. a fixing assembly; 11. a first magnet; 12. a second magnet; 13. a first magnetic conductive block; 14. a second magnetic conductive block; 15. a photoelectric sensor; 20. a movable assembly; 21. a driving section; 22. a movable part; 23. a crochet hook; 24. a first coil; 25. a second coil; 26. a bolt; 27. a leaf spring; 28. a flexible hinge; 29. a length adjuster; 30. and a tension spring.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
In industrial production such as connection of a cell to a bus bar or connection of a wafer to a semiconductor, wire bonding is required, and after wire bonding is completed, it is required to test whether wire bonding is strong by a tensile test device. The traditional tension testing device drives the movable part hooked on the metal wire to move through the air cylinder, but the mode is limited by the air cylinder, so that the response speed is low during testing, and the tension cannot be accurately controlled.
To this, this application provides a tensile testing device, makes movable part from top to bottom and/or control the activity through fixed subassembly and the cooperation of the movable subassembly that contains drive portion and movable part for movable part drives the crochet hook pulling of tip and awaits measuring tensile wire, and not only response speed is fast, but also can accurate control crochet hook's direction, has carried out accurate control to the pulling. The tensile testing device provided in the present application is exemplified below with reference to fig. 1 to 3.
Fig. 1 is a schematic view of a tensile testing apparatus according to an embodiment of the present invention, where the tensile testing apparatus includes a fixed component 10 and a movable component 20, the fixed component 10 is fixedly installed on a table top of a machine, and referring to fig. 2 and 3, the movable component 20 includes a driving part 21 and a movable part 22, a first end of the movable part 22 is installed on a first end of the driving part 21, a second end of the driving part 21 is fixedly connected with the fixed component 10, and the movable part 22 moves up and down and/or left and right under the cooperation of the fixed component 10 and the driving part 21; a crochet hook 23 is arranged at the second end of the movable part 22, and the crochet hook 23 pulls the metal wire to be tested for tensile force under the drive of the movable part 22.
Alternatively, referring to fig. 2 and 3 in combination, the driving part 21 is provided with a first coil 24, the fixed assembly 10 includes a first magnet 11, the first coil 24 is disposed in a first magnetic field of the first magnet 11, and a lorentz force in an up-down direction is generated after the first coil 24 is energized, so as to drive the movable part 22 to move up and down.
The voice coil motor is constituted by the first coil 24 and the first magnet 11, and the magnitude of the lorentz force in the up-down direction can be controlled by controlling the magnitude of the current in the first coil 24, so that not only the magnitude of the force can be precisely controlled, but also the force of the same magnitude can be controlled by the same current, and in addition, the direction of the lorentz force can be changed by changing the direction of the current in the first coil 24, thereby changing the direction of movement of the movable assembly 20.
Alternatively, in practical applications, two first magnets 11 disposed opposite to each other may be disposed inside the fixed assembly 10 to provide the magnetic field.
Optionally, as shown in fig. 3, the fixing assembly 10 further includes a first magnetic conductive block 13, and the first magnet 11 is fixedly mounted on the first magnetic conductive block 13, where the first magnetic conductive block 13 is used to increase the magnetic flux density of the first magnetic field.
The first magnet 11 is fixed on the first magnetic conduction block 13, the first magnetic conduction block 13 is non-magnetic and magnetic after being in magnetic conduction with the first magnet 11, so that less magnetic materials can be used, the magnetic flux density meeting the production requirement can be achieved, and the use cost of the magnetic materials is reduced.
Referring to fig. 4 in combination, there is shown a schematic installation diagram of the first magnets 11 and the first magnetic conductive blocks 13, and exemplary first magnets 11 are two, first magnetic conductive blocks 13 are two, first magnets 11 are respectively fixed on one first magnetic conductive block 13, and the two first magnetic conductive blocks 13 are fixedly connected together through a connecting block, where the connecting block can ensure that the two first magnets 11 remain parallel during the movement process.
Alternatively, the material used for the first magnetic conductive block 13 may be pure iron, or may be low carbon steel, or may be a ferrosilicon alloy or a ferroaluminum alloy, etc., and the specific material used for the first magnetic conductive block 13 is not limited in the embodiment of the present invention.
Alternatively, referring to fig. 2 and 3 in combination, the driving part 21 is provided with a second coil 25, the fixed assembly 10 includes a second magnet 12, the second coil 25 is disposed in a second magnetic field of the second magnet 12, and a lorentz force in a left-right direction is generated after the second coil 25 is energized to drive the movable part 22 to move left and right.
The voice coil motor is constituted by the second coil 25 and the second magnet 12, and the magnitude of the lorentz force in the left-right direction can be controlled by controlling the magnitude of the current in the second coil 25, so that not only the magnitude of the force can be precisely controlled, but also the force of the same magnitude can be controlled by the same current, and in addition, the direction of the lorentz force can be changed by changing the direction of the current in the second coil 25, thereby changing the direction of movement of the movable assembly 20.
Optionally, as shown in fig. 3, the fixing assembly 10 further includes a second magnetic conductive block 14, and the second magnet 12 is fixedly mounted on the second magnetic conductive block 14, where the second magnetic conductive block 14 is used to increase the magnetic flux density of the second magnetic field.
The second magnet 12 is fixed on the second magnetic conduction block 14, and the second magnetic conduction block 14 is non-magnetic and magnetic after being in magnetic conduction with the second magnet 12, so that less magnetic materials can be used, the magnetic flux density meeting the production requirement can be achieved, and the use cost of the magnetic materials is reduced.
Referring to fig. 5 in combination, there is shown a schematic installation of the second magnet 12 and the second magnetic conductive block 14, wherein the second magnet 12 is fixed on the second magnetic conductive block 14, and the second magnetic conductive block 14 is fixedly installed on the base of the fixing assembly 10.
Alternatively, the material used for the second magnetic conductive block 14 may be pure iron, low carbon steel, a ferrosilicon alloy or a ferroaluminum alloy, etc., and the specific material used for the second magnetic conductive block 14 is not limited in the embodiment of the present invention.
Optionally, referring to fig. 1 in combination, the tensile force testing device further includes a tension spring 30, one end of the tension spring 30 is connected to the fixed component 10, and the other end is connected to the movable component 20; the tension spring 30 generates a tensile force to attach the movable assembly 20 to the fixed assembly 10.
The tension spring 30 provides a return force, so that the movable assembly 20 can be attached to the fixed assembly 10, and the driving part 21 and the fixed assembly 10 can apply force to drive the movement of the movable part 22 as much as possible when the lorentz force is generated when the coil is electrified.
Alternatively, as shown in fig. 2, the second end of the driving part 21 is fixed to the fixed assembly 10 by the cooperation of the bolt 26 and the screw thread, and the connection position of the bolt 26 and the screw thread is a fulcrum of the up-and-down movement of the movable assembly 20.
Screw holes are provided at the corresponding positions of the driving part 21 and the fixing assembly 10, and the driving part 21 and the fixing assembly 10 can be fixed by tightening the bolts 26.
Alternatively, as shown in fig. 2, the upper and lower sides of the movable assembly 20 are respectively provided with leaf springs 27, and the leaf springs 27 serve to provide elastic force in the up-down direction.
When the wire is broken, the end of the crochet hook 23 will tilt upward, and the plate spring 27 can prevent the crochet hook 23 from tilting upward too high, and reset the position of the crochet hook 23.
Optionally, as shown in fig. 2, a flexible hinge 28 is disposed at the connection between the first end of the driving portion 21 and the movable portion 22, and the flexible hinge 28 is used for providing a return force in the left-right direction; the flexible hinge 28 is the fulcrum of the side-to-side motion of the movable assembly 20.
When the movable part 22 moves left and right, the flexible hinge 28 is used as a rotation center to rotate, and the flexible hinge 28 provides elastic force opposite to the movement direction to reset the position of the movable part 22.
Optionally, as shown in fig. 2, the movable part 22 of the movable assembly 20 further includes a length adjuster 29, and the length adjuster 29 is used to adjust the extension length of the crochet hook 23.
The extension length of the crochet hook 23 is adjusted by the length adjuster 29, so that the crochet hook 23 can be suitable for tension tests of wires with different distances.
In actual production, the crochet hook 23 is made into a bent shape, the welded metal wire is hooked and pulled upwards, if the welding tension is insufficient, the welding end of the metal wire is broken, the crochet hook 23 is lifted to a high position, but the height of the lifted crochet hook 23 is not very high due to the elasticity of the plate spring 27; if the welding tension is sufficient, the metal wire will be in a tight state under the tension of the crochet hook 23, and the upward lifting height of the crochet hook 23 will not be too high due to the elasticity of the plate spring 27, and the metal wire will be deformed elastically, but will not break.
Optionally, as shown in fig. 3, the fixing assembly 10 further includes a photoelectric sensor 15 for detecting whether the wire is broken, and the photoelectric sensor 15 is disposed at a position corresponding to the movable portion 22.
Since the positions of the movable portions 22 are different when they move, the light transmission amount sensed by the photoelectric sensor 15 is different, and it is possible to detect whether or not the wire is broken.
In practical application, the photoelectric sensor 15 is blocked by the movable portion 22, light cannot be detected, when the metal wire breaks, the position of the movable portion 22 is higher, the light can pass through, and at the same time, the photoelectric sensor 15 detects the light and sends out a signal for reminding an operator of the broken metal wire.
In summary, according to the tensile testing device provided by the embodiment of the invention, the movable part moves up and down and/or left and right through the cooperation of the fixed component and the movable component comprising the driving part and the movable part, so that the movable part drives the crochet hook at the end part to pull the metal wire of the tensile to be tested, the response speed is high, the direction of the crochet hook can be accurately controlled, and the pulling is accurately controlled.
In addition, the voice coil motor is formed by the first magnet and the first coil, so that the response speed is high, and the magnitude of the lorentz force in the vertical direction can be accurately controlled by controlling the magnitude of the current.
In addition, through fixed first magnet of first magnetic conduction piece, increase the magnetic flux density of first magnetic field, can use less magnet material to reach the magnetic flux density that satisfies the production demand to reduce the use cost of magnet material.
In addition, the voice coil motor is formed by the second magnet and the second coil, so that the response speed is high, and the magnitude of the lorentz force in the left-right direction can be accurately controlled by controlling the magnitude of the current.
In addition, the second magnet is fixed through the second magnetic conduction block, so that the magnetic flux density of the second magnetic field is increased, less magnet materials can be used for achieving the magnetic flux density meeting the production requirement, and the use cost of the magnet materials is reduced.
In addition, the movable component and the fixed component are more attached through the tension of the tension spring, so that the force generated by the synergistic action of the fixed component and the driving part can act on the movable part to move up and down or left and right.
In addition, the driving part is fixed with the fixed component through the bolt and the thread, and the connecting position of the bolt and the thread is used as a fulcrum of the up-and-down movement of the movable component, so that the movable component can move up and down based on the connecting position of the bolt and the thread.
In addition, the plate spring provides the elastic force in the vertical direction, and the downward elastic force is provided when the hook needle at the front end of the movable part is lifted, so that the hook needle is prevented from breaking the metal wire and lifting too high.
In addition, the movable assembly rotates by taking the flexible hinge as a rotation center through the return force of the flexible hinge, and the movable assembly provides reverse elastic force when the movable part moves left and right so as to reset the movable part.
In addition, the extension length of the crochet hook is adjusted through the length adjuster, so that the crochet hook can adapt to tension tests of metal wires at different positions.
In addition, by providing a photoelectric sensor at a position corresponding to the movable portion, whether or not the wire is broken can be detected.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. A tensile testing device, characterized in that the tensile testing device comprises: the movable component comprises a driving part and a movable part, the first end of the movable part is arranged at the first end of the driving part, the second end of the driving part is fixedly connected with the fixed component, and the movable part moves up and down and/or left and right under the synergistic effect of the fixed component and the driving part; a crochet hook is arranged at the second end of the movable part, and pulls the metal wire of which the pulling force is to be tested under the drive of the movable part;
the driving part is provided with a first coil, the fixed component comprises a first magnet, the first coil is arranged in a first magnetic field of the first magnet, and Lorentz force in the up-down direction is generated after the first coil is electrified to drive the movable part to move up and down;
the fixing assembly further comprises a first magnetic conduction block, the first magnet is fixedly arranged on the first magnetic conduction block, and the first magnetic conduction block is used for increasing the magnetic flux density of a first magnetic field;
the driving part is provided with a second coil, the fixing component comprises a second magnet, the second coil is arranged in a second magnetic field of the second magnet, and Lorentz force in the left-right direction is generated after the second coil is electrified to drive the movable part to move left and right.
2. The tensile testing device of claim 1, wherein said stationary assembly further comprises a second magnetically permeable block, said second magnet being fixedly mounted on said second magnetically permeable block, said second magnetically permeable block for increasing the magnetic flux density of the second magnetic field.
3. The tensile testing device of claim 1, further comprising a tension spring, one end of the tension spring being connected to the fixed assembly and the other end being connected to the movable assembly; the tension spring generates tension to attach the movable assembly to the fixed assembly.
4. The tensile testing device according to claim 1, wherein the second end of the driving part is fixed to the fixed assembly by the cooperation of a bolt and a screw, and the connection position of the bolt and the screw is a fulcrum of the up-and-down movement of the movable assembly.
5. The tensile testing device according to claim 1, wherein the upper and lower sides of the movable assembly are respectively provided with leaf springs for providing elastic force in the up-down direction.
6. The tensile testing device according to claim 1, wherein a flexible hinge is provided at a connection between the first end of the driving part and the movable part, the flexible hinge being used for providing a return force in a left-right direction; the flexible hinge is a fulcrum of the left-right movement of the movable assembly.
7. The tensile testing device of claim 1, wherein the movable portion of the movable assembly further comprises a length adjuster for adjusting the extension length of the crochet.
8. The tensile testing device according to any one of claims 1 to 7, wherein the fixing assembly further includes a photosensor for detecting whether or not the wire is broken, the photosensor being disposed at a position corresponding to the movable portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910012413.4A CN109596424B (en) | 2019-01-07 | 2019-01-07 | Tension testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910012413.4A CN109596424B (en) | 2019-01-07 | 2019-01-07 | Tension testing device |
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| Publication Number | Publication Date |
|---|---|
| CN109596424A CN109596424A (en) | 2019-04-09 |
| CN109596424B true CN109596424B (en) | 2024-02-13 |
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| CN201910012413.4A Active CN109596424B (en) | 2019-01-07 | 2019-01-07 | Tension testing device |
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| CN209690056U (en) * | 2019-01-07 | 2019-11-26 | 无锡奥特维科技股份有限公司 | Device for testing tensile force |
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| US6985058B2 (en) * | 2002-09-17 | 2006-01-10 | The Johns Hopkins University | Lorentz force assisted switch |
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