CN117168966A - Material welding spot tensile strength test fixture and test method - Google Patents
Material welding spot tensile strength test fixture and test method Download PDFInfo
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- CN117168966A CN117168966A CN202311184526.5A CN202311184526A CN117168966A CN 117168966 A CN117168966 A CN 117168966A CN 202311184526 A CN202311184526 A CN 202311184526A CN 117168966 A CN117168966 A CN 117168966A
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Abstract
The invention discloses a material welding spot tensile strength test fixture and a test method, which relate to the technical field of tensile strength test fixtures, and the material welding spot tensile strength test fixture comprises: a clamp mechanism; according to the invention, the perpendicularity of the sample on the testing machine can be adjusted through the first mounting plate, the second mounting plate and the third mounting plate, so that the sample can be uniformly stressed when the testing machine applies a tensile force to the sample, and the accuracy of a test result is improved; and the welding spot simulation increasing mechanism can effectively simulate that when the number of welding spots on a sample is a certain value, the sample can accord with the tensile resistance value required by an experimenter, and then the welding efficiency can be improved and the cost expenditure can be reduced in the factory production stage.
Description
Technical Field
The invention belongs to the technical field of tensile testing fixtures, and particularly relates to a tensile testing fixture for a welding spot of a material.
Background
The tensile tester is a tensile testing instrument, is mainly used for testing non-metal materials such as adhesive tapes, rubber, plastics, sea/foam, waterproof materials, wires and cables, textiles, net ropes, non-woven fabrics and the like, and stretching, compression, bending, stripping, shearing and tearing of metal wires, metal foils, metal plates and metal rods, is suitable for testing the mechanical properties of the metal materials, the non-metal materials and composite materials and analyzing and researching the technological properties, can be matched with corresponding tool clamps, can be used for testing stretching, compression, bending, load-holding, shearing, tearing, stripping, bursting, fatigue and the like, can automatically obtain the parameters such as maximum test force value, breaking force value, elongation, tensile strength, yield strength, compressive strength, elastic modulus, shearing strength, tearing strength, stripping strength and the like, and can realize testing requirements such as fixed elongation stress, fixed stress elongation, load holding and the like, and is widely applied to material testing and analyzing in the industries such as building materials, aerospace, mechanical manufacturing, wires and cables, rubber plastics, automobile manufacturing, powder metallurgy and the like;
the weld joint tensile test is a method for evaluating welding quality, which is very important in the welding process, and generally measures the strength and endurance of a weld joint by applying tensile force, and the procedure of the weld joint tensile test is referred to as follows:
1. preparing a sample: preparing a welding sample to be tested, which may be a welded joint, a sample of welding material or an actual weld;
2. clamping a sample: clamping the sample by using a clamp to ensure that the sample remains stable when a tensile force is applied;
3. applying a tensile force: gradually applying a pulling force to the sample to simulate an actual stress condition, the pulling force being applied by a manipulator, a tensile tester, or other suitable device;
4. recording test data: recording the relationship between the tensile force and the displacement of the sample in the process of applying the tensile force;
5. analysis results: by analyzing the test data, the strength and toughness of the weld can be evaluated. Common analysis methods include comparing the breaking load of a weld to standard requirements or to other welds;
therefore, the clamping mode of the tensile force resistant sample determines the stability in the tensile force applying process, the clamp in the prior art cannot change the perpendicularity of the sample, so that when two clamps clamp two ends of the sample respectively, the sample is in a skew shape, if the sample is clamped and skewed, uneven tensile force application points can be caused, the distortion of test data is caused, the tensile force application points are not arranged at the center position of the sample, the centralized action of the tensile force can be caused, the test result cannot accurately reflect the real strength of a welding spot, the test result can be too high or too low, and the assessment of the quality of the welding spot is misled;
secondly, if the sample is severely skewed when a tensile force is applied, the sample may be damaged, and other parts around the welding spot may be cracked, deformed or stressed unevenly, which affects the accuracy of the test result and may damage the welding structure, so we propose a tensile testing fixture for the welding spot of the material.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a material welding spot tensile test fixture which can overcome the problems or at least partially solve the problems.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that: a material weld tensile test fixture comprising: the fixture mechanism is arranged on the testing machine and comprises a first mounting plate, a second mounting plate and a third mounting plate, wherein the second mounting plate slides on the first mounting plate along an X axis to adjust the position of a sample along the X axis, and the third mounting plate moves on the second mounting plate along a Y axis to adjust the position of the sample along the Y axis; and the clamping blocks are symmetrically arranged on the third mounting plate and used for clamping one end of the sample.
Preferably, the base of the testing machine is fixedly connected with a connecting sleeve, the bottom surface of the first mounting plate is fixedly connected with a connecting column, the connecting column is inserted into the connecting sleeve, penetrating pin holes are formed in the connecting column and the connecting sleeve, and the connecting column and the connecting sleeve are connected through pin columns.
Preferably, the first mounting plate is slidably connected with a first slider, the second mounting plate is fixedly connected with the first slider, the first mounting plate is connected with a first threaded rod in a threaded manner, and one end of the first threaded rod is rotatably connected to the side wall of the first slider.
Preferably, the second mounting plate is slidably connected with a second slider, the third mounting plate is fixedly connected with the second slider, the second mounting plate is connected with a second threaded rod in a threaded manner, and one end of the second threaded rod is rotatably connected with the second slider.
Preferably, the two clamping blocks are both in sliding connection with the third mounting plate, third threaded rods are symmetrically connected with the third mounting plate in a threaded manner, and one ends of the two third threaded rods are rotationally connected with the side walls of the corresponding clamping blocks.
Preferably, an upper fixture is mounted on an upper mounting plate of the testing machine for clamping the other end of the sample.
Further, the method further comprises the following steps: and the welding spot simulation increasing mechanism is arranged on the testing machine and is used for simulating and increasing the welding quantity on the sample.
Further, the welding spot simulation increasing mechanism comprises cylinders symmetrically arranged on the testing machine, a connecting plate is fixedly connected to the telescopic end of each cylinder, a tight supporting block is connected to each connecting plate in a sliding mode, protruding points are fixedly connected to the two ends of the tight supporting block and used for clamping samples from the two sides of the samples through the cylinders, and the two protruding points on the tight supporting block are respectively propped against the samples on the two sides of the welding seam of the samples.
Further, symmetry fixedly connected with fixed plate on the testing machine, two rotate between the fixed plate and be connected with the lead screw, two fixedly connected with guide arm between the fixed plate, threaded connection has the mounting bracket on the lead screw, mounting bracket sliding connection is on the guide arm.
A method for testing tensile resistance of a welding spot of a material mainly comprises the following steps:
s1, clamping a sample between an upper clamp and a clamping block on a third mounting plate, and adjusting the positions of the second mounting plate and the third mounting plate to further adjust the perpendicularity of the sample;
s2, after the perpendicularity of the sample is adjusted, an upper mounting plate on the testing machine moves upwards, a tensile force is applied to the sample, and an experiment is carried out on the tensile resistance of the sample;
s3, when the number of welding spots of the sample is required to be increased, and the tensile resistance values of different welding spots are measured, welding spots are increased on the sample through a welding spot simulation increasing mechanism;
s4, driving the abutting block to be tightly attached to the outer surface of the sample through the air cylinder, enabling two protruding points on the abutting block to abut against the outer surfaces of two parts on the sample, combining the abutting force of the abutting block on the sample, and simulating a newly-added welding spot;
and S5, after the tensile resistance test of the welding spot of the sample is finished, the sample is taken down from the testing machine.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects: according to the invention, the perpendicularity of the sample on the testing machine can be adjusted through the first mounting plate, the second mounting plate and the third mounting plate, so that the sample can be uniformly stressed when the testing machine applies a tensile force to the sample, and the accuracy of a test result is improved; and the welding spot simulation increasing mechanism can effectively simulate that when the number of welding spots on a sample is a certain value, the sample can accord with the tensile resistance value required by an experimenter, and then the welding efficiency can be improved and the cost expenditure can be reduced in the factory production stage.
Drawings
In the drawings:
FIG. 1 is a schematic diagram of a perspective structure of a tensile testing fixture for a solder joint of a material according to the present invention;
FIG. 2 is a schematic diagram of the structure of the material welding point tensile test fixture shown in FIG. 1A;
FIG. 3 is a schematic diagram showing a second perspective structure of a tensile testing fixture for a solder joint of a material according to the present invention;
FIG. 4 is a schematic diagram of the structure of the material welding point tensile testing fixture shown in FIG. 3B;
FIG. 5 is a schematic diagram of a third perspective structure of a tensile testing fixture for solder joints of materials according to the present invention;
fig. 6 is a schematic diagram showing a three-dimensional structure of a tensile testing fixture for a welding spot of a material according to the present invention.
In the figure: 1. a testing machine; 11. a base; 12. a connecting sleeve; 13. a pin; 14. an upper mounting plate; 15. a clamp is arranged; 2. a first mounting plate; 20. a connecting column; 21. a first slider; 22. a first threaded rod; 3. a second mounting plate; 31. a second slider; 32. a second threaded rod; 4. a third mounting plate; 41. clamping blocks; 42. a third threaded rod; 5. a cylinder; 51. a connecting plate; 52. a tightening block; 53. a bump; 54. a mounting frame; 6. a fixing plate; 61. a screw rod; 62. and a guide rod.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
Example 1:
referring to fig. 1-6, a material solder joint tensile test fixture, comprising: the fixture mechanism is arranged on the testing machine 1 and comprises a first mounting plate 2, a second mounting plate 3 and a third mounting plate 4, wherein the second mounting plate 3 slides on the first mounting plate 2 along the X axis to adjust the position of a sample along the X axis, and the third mounting plate 4 moves on the second mounting plate 3 along the Y axis to adjust the position of the sample along the Y axis; the clamping blocks 41 are symmetrically arranged on the third mounting plate 4 and used for clamping one end of the sample;
according to the device, the perpendicularity of the sample on the testing machine 1 can be adjusted through the first mounting plate 2, the second mounting plate 3 and the third mounting plate 4, and then the perpendicularity of the sample is adjusted, so that the sample can be uniformly stressed when the testing machine 1 applies a tensile force to the sample, and the accuracy of a test result is improved;
the testing machine 1 is a device for measuring the mechanical properties of a material under tensile loading, the construction of which generally comprises the following main parts:
1. load frame: it is the main body frame of the whole testing machine 1, and is responsible for providing stable structural support and load transfer functions, and the load frame is usually made of a firm metal material and has enough rigidity and stability to ensure that deformation or displacement cannot occur during the test;
2. sample clamp: for holding and gripping a sample to apply force and to maintain a stable sample position during testing, the sample holder typically has an adjustable gripping force to accommodate samples of different types and sizes;
3. stretching device: for gradually applying a tensile load to the specimen, typically by means of a motor or hydraulic system, the stretching means comprising a stretching arm or clamp connected to the specimen and applying a stretching force to gradually extend the specimen;
4. displacement measurement system: for measuring the extension displacement of a sample during loading, common displacement measurement systems include mechanical strain gauges, laser displacement sensors or grating scales, etc., which can provide very accurate displacement measurements to evaluate the extension performance of the sample;
5. loading a measuring system: for measuring the tensile forces to which the sample is subjected, this is usually achieved by means of a load cell or force sensor, which converts the force on the sample into an electrical signal and displays it as a specific force value;
6. control and data acquisition unit: for controlling the operation of the testing machine 1 and for collecting test data, which is usually controlled by a computer system, special software and data processing means may be provided for real-time data recording, analysis and report generation;
example 2:
referring to fig. 1-6, a material solder joint tensile test fixture, comprising: the fixture mechanism is arranged on the testing machine 1 and comprises a first mounting plate 2, a second mounting plate 3 and a third mounting plate 4, wherein the second mounting plate 3 slides on the first mounting plate 2 along the X axis to adjust the position of a sample along the X axis, and the third mounting plate 4 moves on the second mounting plate 3 along the Y axis to adjust the position of the sample along the Y axis; the clamping blocks 41 are symmetrically arranged on the third mounting plate 4 and used for clamping one end of the sample, so that the clamped sample can be adjusted in the X, Y direction, and further: the base 11 of the testing machine 1 is fixedly connected with a connecting sleeve 12, the bottom surface of the first mounting plate 2 is fixedly connected with a connecting column 20, the connecting column 20 is inserted into the connecting sleeve 12, the connecting column 20 and the connecting sleeve 12 are provided with penetrating pin holes, and the connecting column 20 and the connecting sleeve 12 are connected through a pin 13;
when the device is used for installing the first installation plate 2, the connecting column 20 at the bottom of the first installation plate 2 is inserted into the connecting sleeve 12, the pin holes on the connecting column 20 are aligned with the pin holes on the connecting sleeve 12, and then the pin columns 13 are inserted into the pin holes, so that the first installation plate 2 is quickly installed;
example 3:
referring to fig. 1-6, a material solder joint tensile test fixture, comprising: the fixture mechanism is arranged on the testing machine 1 and comprises a first mounting plate 2, a second mounting plate 3 and a third mounting plate 4, wherein the second mounting plate 3 slides on the first mounting plate 2 along the X axis to adjust the position of a sample along the X axis, and the third mounting plate 4 moves on the second mounting plate 3 along the Y axis to adjust the position of the sample along the Y axis; the clamping blocks 41 are symmetrically arranged on the third mounting plate 4 and used for clamping one end of the sample, so that the clamped sample can be adjusted in the X, Y direction, and further: the first mounting plate 2 is connected with a first sliding block 21 in a sliding manner, the second mounting plate 3 is fixedly connected to the first sliding block 21, the first mounting plate 2 is connected with a first threaded rod 22 in a threaded manner, and one end of the first threaded rod 22 is rotatably connected to the side wall of the first sliding block 21;
the device drives the second mounting plate 3 to move in the X-axis direction when the first sliding block 21 is pushed by pushing the first sliding block 21 when the first threaded rod 22 is rotated by rotating the first threaded rod 22, so that the position of a sample can be adjusted in the X-axis direction;
example 4:
referring to fig. 1-6, a material solder joint tensile test fixture, comprising: the fixture mechanism is arranged on the testing machine 1 and comprises a first mounting plate 2, a second mounting plate 3 and a third mounting plate 4, wherein the second mounting plate 3 slides on the first mounting plate 2 along the X axis to adjust the position of a sample along the X axis, and the third mounting plate 4 moves on the second mounting plate 3 along the Y axis to adjust the position of the sample along the Y axis; the clamping blocks 41 are symmetrically arranged on the third mounting plate 4 and used for clamping one end of the sample, so that the clamped sample can be adjusted in the X, Y direction, and further: the second mounting plate 3 is slidably connected with a second sliding block 31, the third mounting plate 4 is fixedly connected to the second sliding block 31, the second mounting plate 3 is in threaded connection with a second threaded rod 32, and one end of the second threaded rod 32 is rotatably connected to the second sliding block 31;
by rotating the second threaded rod 32 and pushing the second sliding block 31 when the second threaded rod 32 is rotated, the second sliding block 31 drives the third mounting plate 4 to move in the Y-axis direction when being pushed, and then the position of the sample can be adjusted in the Y-axis direction, so that the device can adjust the position of the sample by driving the first sliding block 21 and the second sliding block 31 to slide on the corresponding first mounting plate 2 and second mounting plate 3;
the two clamping blocks 41 are both connected to the third mounting plate 4 in a sliding manner, third threaded rods 42 are symmetrically connected to the third mounting plate 4 in a threaded manner, and one ends of the two third threaded rods 42 are rotationally connected with the side walls of the corresponding clamping blocks 41;
by rotating the third threaded rod 42, the clamping block 41 is pushed to slide, and one end of the sample is clamped;
the first threaded rod 22, the second threaded rod 32 and the third threaded rod 42 on the device can be driven by other mechanisms capable of reciprocating rectilinear motion, and the device is not limited to the structure that the first threaded rod 22, the second threaded rod 32 and the third threaded rod 42 can realize reciprocating rectilinear motion and can realize self-locking.
An upper clamp 15 is arranged on an upper mounting plate 14 of the testing machine 1 and used for clamping the other end of the sample;
the device is matched with the upper clamp 15 through the clamping block 41, so that the sample is clamped, and the position of the sample is adjusted through the clamping block 41.
In one embodiment, further comprising: the welding spot simulation increasing mechanism is arranged on the testing machine 1 and is used for simulating and increasing the number of welding on the sample;
the device can measure the tensile resistance value of the welding spots on the original sample by innovatively arranging the welding spot simulation increasing mechanism and can measure another group of data for reference by additionally simulating and increasing the number of the welding spots when the welding spot tensile resistance test is carried out on the sample;
if the number of welding spots on the sample is 4 groups, the tensile resistance value is X, and the value does not accord with the sample tensile resistance value required by an experimenter, then a welding spot simulation increasing mechanism is used to newly increase the number of welding spots with Y on the sample, and then the welding spot tensile resistance test is carried out again to obtain a new group of data;
the welding spot simulation increasing mechanism can rapidly simulate and increase the number of welding spots on a sample in a laboratory, thereby improving the efficiency of the tensile test of the welding spots;
and the welding spot simulation increasing mechanism can effectively simulate that when the number of welding spots on a sample is a certain value, the sample can accord with the tensile resistance value required by an experimenter, and then the welding efficiency can be improved and the cost expenditure can be reduced in the factory production stage.
The welding spot simulation increasing mechanism comprises air cylinders 5 symmetrically arranged on the testing machine 1, a connecting plate 51 is fixedly connected to the telescopic end of the air cylinders 5, a tight supporting block 52 is connected to the connecting plate 51 in a sliding manner, protruding points 53 are fixedly connected to the two ends of the tight supporting block 52, and are used for clamping samples from the two sides of the samples through the air cylinders 5, so that the two protruding points 53 on the tight supporting block 52 are respectively propped against the samples on the two sides of the welding seam of the samples;
the device drives the abutting blocks 52 positioned at two sides of a sample between the upper clamp 15 and the clamping block 41 through the air cylinder 5 to approach the sample, and enables two convex points 53 on the abutting blocks 52 to be respectively contacted with the surfaces of two parts on the sample, the sample is clamped through the air cylinder 5, and then the convex points 53 are contacted with the sample to simulate welding spots;
the abutting block 52 is connected to the connecting plate 51 in a sliding connection mode, so that the position between the abutting block 52 and the sample can be conveniently adjusted;
meanwhile, the number of the abutting blocks 52 can be increased according to the number of welding spots to be simulated, and meanwhile, the damaged abutting blocks 52 can be replaced conveniently;
the driving abutting block 52 is close to the sample, and the moving distance of the abutting block 52 can be accurately controlled through other mechanisms capable of moving back and forth, such as a hydraulic rod and an electric push rod.
The testing machine 1 is symmetrically and fixedly connected with fixing plates 6, a screw rod 61 is rotationally connected between the two fixing plates 6, a guide rod 62 is fixedly connected between the two fixing plates 6, a mounting frame 54 is connected to the screw rod 61 through threads, and the mounting frame 54 is slidingly connected to the guide rod 62;
the screw rod 61 is driven to rotate, so that the position of the air cylinder 5 on the testing machine 1 can be adjusted, two convex points 53 on the block 52 can be conveniently abutted, and the two convex points can be respectively contacted with the surfaces of two parts on a sample;
the screw rod 61 can be rotated by manual torsion, the screw rod 61 is driven to rotate, the motor is driven by a motor, the motor is arranged on the testing machine 1, the output end of the motor is fixedly connected with one end of the screw rod 61, and the position of the abutting block 52 can be accurately adjusted by driving the screw rod 61 by the motor.
Example 5:
referring to fig. 1-6, a method for testing tensile resistance of a welding spot of a material mainly comprises the following steps:
s1, clamping a sample between an upper clamp 15 and a clamping block 41 on a third mounting plate 4, and adjusting the positions of a second mounting plate 3 and the third mounting plate 4 to further adjust the perpendicularity of the sample;
s2, after the perpendicularity of the sample is adjusted, the upper mounting plate 14 on the testing machine 1 moves upwards, a tensile force is applied to the sample, and an experiment is carried out on the tensile resistance of the sample;
s3, when the number of welding spots of the sample is required to be increased, and the tensile resistance values of different welding spots are measured, welding spots are increased on the sample through a welding spot simulation increasing mechanism;
s4, driving the abutting block 52 to be tightly attached to the outer surface of the sample through the air cylinder 5, enabling two protruding points 53 on the abutting block 52 to abut against the outer surfaces of two parts on the sample, combining the abutting force of the abutting block 52 on the sample, and simulating a newly added welding spot;
and S5, after the tensile resistance test of the welding spot of the sample is finished, the sample is taken down from the testing machine 1.
According to the invention, the perpendicularity of the sample on the testing machine 1 can be adjusted through the first mounting plate 2, the second mounting plate 3 and the third mounting plate 4, so that the sample can be uniformly stressed when the testing machine 1 applies a tensile force to the sample, and the accuracy of a test result is improved; and the welding spot simulation increasing mechanism can effectively simulate that when the number of welding spots on a sample is a certain value, the sample can accord with the tensile resistance value required by an experimenter, and then the welding efficiency can be improved and the cost expenditure can be reduced in the factory production stage.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (10)
1. A material solder joint tensile test fixture, characterized in that includes:
the fixture mechanism is arranged on the testing machine (1) and comprises a first mounting plate (2), a second mounting plate (3) and a third mounting plate (4), wherein the second mounting plate (3) slides on the first mounting plate (2) along an X axis to adjust the position of a sample along the X axis, and the third mounting plate (4) moves on the second mounting plate (3) along a Y axis to adjust the position of the sample along the Y axis;
and the clamping blocks (41) are symmetrically arranged on the third mounting plate (4) and used for clamping one end of the sample.
2. The material welding spot tensile test fixture according to claim 1, wherein a connecting sleeve (12) is fixedly connected to a base (11) of the tester (1), a connecting column (20) is fixedly connected to the bottom surface of the first mounting plate (2), the connecting column (20) is inserted into the connecting sleeve (12), penetrating pin holes are formed in the connecting column (20) and the connecting sleeve (12), and the connecting column (20) and the connecting sleeve (12) are connected through a pin (13).
3. The material welding spot tensile test fixture according to claim 1, wherein the first mounting plate (2) is slidably connected with a first slider (21), the second mounting plate (3) is fixedly connected to the first slider (21), the first mounting plate (2) is threadably connected with a first threaded rod (22), and one end of the first threaded rod (22) is rotatably connected to the side wall of the first slider (21).
4. The material welding spot tensile test fixture according to claim 1, wherein a second sliding block (31) is slidably connected to the second mounting plate (3), the third mounting plate (4) is fixedly connected to the second sliding block (31), a second threaded rod (32) is in threaded connection to the second mounting plate (3), and one end of the second threaded rod (32) is rotatably connected to the second sliding block (31).
5. The fixture for testing the tensile strength of welding spots of the material according to claim 1, wherein two clamping blocks (41) are both connected to a third mounting plate (4) in a sliding manner, third threaded rods (42) are symmetrically connected to the third mounting plate (4) in a threaded manner, and one ends of the two third threaded rods (42) are rotatably connected with the side walls of the corresponding clamping blocks (41).
6. The material welding spot tensile test fixture according to claim 1, wherein an upper fixture (15) is mounted on an upper mounting plate (14) of the tester (1) for clamping the other end of the sample.
7. The material joint tensile test fixture of claim 6, further comprising:
and the welding spot simulation increasing mechanism is arranged on the testing machine (1) and is used for simulating and increasing the welding quantity on the sample.
8. The material welding spot tensile resistance testing fixture according to claim 7, wherein the welding spot simulation increasing mechanism comprises air cylinders (5) symmetrically arranged on the testing machine (1), connecting plates (51) are fixedly connected to telescopic ends of the air cylinders (5), abutting blocks (52) are connected to the connecting plates (51) in a sliding mode, protruding points (53) are fixedly connected to two ends of each abutting block (52) and used for clamping samples from two sides of the samples through the air cylinders (5), and the two protruding points (53) on each abutting block (52) are respectively abutted against samples on two sides of the welding seam of the samples.
9. The material welding spot tensile test fixture according to claim 8, wherein the tester (1) is symmetrically and fixedly connected with fixing plates (6), a screw rod (61) is rotatably connected between the two fixing plates (6), a guide rod (62) is fixedly connected between the two fixing plates (6), a mounting frame (54) is connected to the screw rod (61) in a threaded manner, and the mounting frame (54) is slidably connected to the guide rod (62).
10. A method for testing the tensile strength of a welding spot of a material, comprising the testing fixture for testing the tensile strength of the welding spot of the material according to claim 9, characterized by comprising the following steps:
s1, clamping a sample between an upper clamp (15) and a clamping block (41) on a third mounting plate (4), and adjusting the perpendicularity of the sample by adjusting the positions of a second mounting plate (3) and the third mounting plate (4);
s2, after the perpendicularity of the sample is adjusted, an upper mounting plate (14) on the testing machine (1) moves upwards, a tensile force is applied to the sample, and an experiment is carried out on the tensile resistance of the sample;
s3, when the number of welding spots of the sample is required to be increased, and the tensile resistance values of different welding spots are measured, welding spots are increased on the sample through a welding spot simulation increasing mechanism;
s4, driving the abutting block (52) to be tightly attached to the outer surface of the sample through the air cylinder (5), enabling two protruding points (53) on the abutting block (52) to abut against the outer surfaces of two parts on the sample, combining the abutting force of the abutting block (52) on the sample, and simulating a newly added welding spot;
s5, after the tensile resistance test of the welding spot of the sample is finished, the sample is taken down from the testing machine (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311184526.5A CN117168966A (en) | 2023-09-14 | 2023-09-14 | Material welding spot tensile strength test fixture and test method |
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| CN202311184526.5A CN117168966A (en) | 2023-09-14 | 2023-09-14 | Material welding spot tensile strength test fixture and test method |
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| CN (1) | CN117168966A (en) |
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2023
- 2023-09-14 CN CN202311184526.5A patent/CN117168966A/en active Pending
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