Calibrating device for tension testing machine
By adopting a multi-sensor combination calibration device and fixed structure in the tensile test machine, the problems of insufficient accuracy of a single sensor and equipment shaking are solved, and higher accuracy and stable measurement results are achieved.
Patent Information
- Application Number
- CN202422192494.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-06
AI Technical Summary
Due to the limited accuracy and stability of a single sensor, the measurement results are inaccurate, and the lack of fixed structure causes equipment to shake and affect the accuracy and reliability of the test results.
Multiple sensor combination calibration devices are adopted, including force sensors, displacement sensors, magnetostrictive displacement sensors, etc., to reduce errors through comprehensive data analysis, and ensure equipment stability through fixed structures such as support legs and shock absorbers.
It improves the accuracy and accuracy of the measurement results, reduces the risk of calibration failure caused by a single sensor failure, ensures the stability of the test machine and the continuous measurement, and reduces the impact of vibration on the measurement.
Smart Images
Figure CN223154762U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tensile testing machines, in particular to a calibration device for a tensile testing machine. Background Technique
[0002] A tensile testing machine is a device used to test the mechanical properties of materials, components or products, such as tensile, compression, bending, shear, etc. Its working principle is usually to provide power through an electric motor, hydraulic or pneumatic system, clamp the specimen with a fixture, and apply a load to the specimen at a set speed and loading method. At the same time, through various sensors, such as force sensors, displacement sensors, etc., measure the force and deformation suffered by the specimen. Tensile testing machines are widely used in many fields such as materials science, mechanical manufacturing, construction engineering, aerospace, etc., to evaluate performance indicators such as the strength, toughness, and ductility of materials, and provide important data support for product design, quality control, and scientific research work.
[0003] The inventor found the following problems in the process of realizing the utility model in the prior art: 1. The accuracy and stability of a single sensor are limited, and its own errors or failures may lead to inaccurate calibration results, thus affecting the judgment of the performance of the tensile testing machine; 2. The lack of a fixed structure will cause the testing machine to easily shake or displace during operation, affecting the accuracy and reliability of the test results. The shaking or displacement may cause the value of the force sensed by the sensor to deviate, resulting in a large error in the measurement results. Content of the Utility Model
[0004] The purpose of the utility model is to provide a calibration device for a tensile testing machine to solve the problem that the shaking or displacement may cause the value of the force sensed by the sensor to deviate, and due to the influence of shaking, the data of the sensor is inaccurate, affecting the measurement result. To achieve the above purpose, the utility model provides the following technical solution: A calibration device for a tensile testing machine, including a fixing plate, an equipment shell is arranged above the fixing plate, a spring is welded on one side of the equipment shell, and a controller is arranged above the fixing plate.
[0005] A slider is welded on one side of the equipment shell, a force sensor is installed on the equipment shell through screws, a displacement sensor is arranged on one side of the force sensor, a strain sensing module is arranged on one side of the displacement sensor, a magnetostrictive displacement sensor is installed on the inner wall of the equipment shell through screws, an arrow is arranged on the upper side edge of the equipment shell, a second fixing groove is installed in the middle of the upper part of the equipment shell through screws, a second single-threaded screw rod is connected inside the second fixing groove through threads, a second rotating plate is arranged on one side of the second single-threaded screw rod, and a cylinder is arranged behind the equipment shell.
[0006] Further preferably, a control panel is installed above the fixing plate by screws, a first fixing groove is installed below the fixing plate by screws, a first single-threaded screw rod is threadedly connected inside the first fixing groove, a first rotating plate is rotatably connected above the first single-threaded screw rod, a sliding groove is installed above the fixing plate by screws, a scale is adhesively bonded above the sliding groove, a sliding rod is welded inside the sliding groove, a support leg is welded below the fixing plate, a sound insulation pad is adhesively bonded below the support leg, a shock absorber is provided on one side of the support leg, and the internal structural dimensions of the first fixing groove are consistent with the external structural dimensions of the first single-threaded screw rod, and the first single-threaded screw rod is connected to the first rotating plate through a bearing. The upper surface of the first rotating plate is provided with vertical anti-slip pads, and several anti-slip pads are horizontally distributed. A circular rotating handle is provided below the first single-threaded screw rod.
[0007] Further preferably, the external structural dimensions of the lower part of the support leg are consistent with the external structural dimensions of the sound insulation pad.
[0008] Further preferably, the second rotating plate forms a rotating structure through a second single-threaded screw rod, and the external structural dimensions of the second single-threaded screw rod are consistent with the internal circular groove structural dimensions of the second fixing groove. The surface of the second rotating plate is provided with several evenly equal square anti-slip pads, and the second fixing groove, the second single-threaded screw rod and the second rotating plate provided on the equipment shell, and a set of the same parts are provided on one side of the control panel and the equipment shell.
[0009] Further preferably, several cables are connected to one side of the control panel, and the control panel is connected to the controller, the controller is connected to the cylinder, the control panel is connected to the force sensor, the force sensor is connected to the displacement sensor, the strain sensing module is connected to the displacement sensor, the magnetostrictive displacement sensor is connected to the arrow induction piece, and the magnetostrictive displacement sensor is connected to the control panel.
[0010] Further preferably, the equipment shell forms a sliding structure through a cylinder, and the internal circular groove structural dimensions of the slider are consistent with the outer wall structural dimensions of the sliding rod.
[0011] Further preferably, the equipment shell forms an elastic structure through a spring.
[0012] Compared with the prior art, the beneficial effects of the present utility model are:
[0013] In this utility model, multiple sensors can obtain data from different positions and angles. By comprehensively analyzing this data, the errors and deviations that may exist in a single sensor can be reduced, thereby significantly improving the accuracy and precision of the measurement results. When one of the sensors fails or the data is abnormal, the presence of other sensors can provide backup data, which helps to ensure the continuity and stability of the calibration work and reduce the risk of calibration failure caused by the failure of a single sensor. Sensors at different positions can capture the force conditions of different parts of the tensile testing machine, thus more comprehensively evaluating the overall performance and uniformity of the testing machine.
[0014] In this utility model, to ensure the stability of the equipment, the tensile testing machine is kept in a stable position during operation, avoiding measurement errors caused by equipment movement or vibration, improving measurement accuracy, providing a solid support foundation for the testing machine, ensuring the accuracy of the force application direction, and thus obtaining more accurate test results. To reduce the vibration impact, the vibration energy generated during the operation of the testing machine is absorbed, and the adverse effects of vibration on the structure of the testing machine itself and the measurement system are reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a front view structural schematic diagram of this utility model;
[0016] Figure 2 is a top view structural schematic diagram of this utility model;
[0017] Figure 3 is a structural schematic diagram above the fixing plate of this utility model;
[0018] Figure 4 is a structural schematic diagram of one side of the equipment shell of this utility model.
[0019] In the figure: 1, fixing plate; 101, control panel; 102, scale; 103, sliding groove; 104, sliding rod; 105, shock absorber; 106, support leg; 107, sound insulation pad; 108, first rotating plate; 109, first single-threaded lead screw; 110, first fixing groove; 2, equipment shell; 201, slider; 202, cylinder; 203, strain sensing module; 204, displacement sensor; 205, force sensor; 206, second single-threaded lead screw; 207, second rotating plate; 208, magnetostrictive displacement sensor; 209, second fixing groove; 210, arrow; 3, controller; 4, spring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0021] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a calibration device for a tensile testing machine, including a fixing plate 1, an equipment shell 2 is arranged above the fixing plate 1, a spring 4 is welded on one side of the equipment shell 2, and a controller 3 is arranged above the fixing plate 1.
[0022] A slider 201 is welded on one side of the equipment shell 2, a force sensor 205 is installed on the equipment shell 2 through screws, a displacement sensor 204 is arranged on one side of the force sensor 205, a strain sensing module 203 is arranged on one side of the displacement sensor 204, a magnetostrictive displacement sensor 208 is installed on the inner wall of the equipment shell 2 through screws, an arrow 210 is arranged on the upper side of the equipment shell 2, a second fixing groove 209 is installed in the middle of the upper part of the equipment shell 2 through screws, a second single-threaded screw rod 206 is connected to the inside of the second fixing groove 209 through threads, a second rotating plate 207 is arranged on one side of the second single-threaded screw rod 206, and a cylinder 202 is arranged behind the equipment shell 2.
[0023] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown in the figure, a control panel 101 is installed above the fixing plate 1 by screws, and a first fixing groove 110 is installed below the fixing plate 1 by screws. A first single-threaded screw rod 109 is threadedly connected inside the first fixing groove 110. The upper part of the first single-threaded screw rod 109 is rotatably connected to a first rotating plate 108. A chute 103 is installed above the fixing plate 1 by screws, a scale 102 is glued above the chute 103, a slide bar 104 is welded inside the chute 103, a support leg 106 is welded below the fixing plate 1, a sound insulation pad 107 is glued below the support leg 106, a shock absorber 105 is provided on one side of the support leg 106, and the internal structural dimensions of the first fixing groove 110 are consistent with the external structural dimensions of the first single-threaded screw rod 109. And the upper part of the first single-threaded screw rod 109 is connected to the first rotating plate 108 through a bearing. The upper surface of the first rotating plate 108 is provided with vertical anti-slip pads, and several anti-slip pads are horizontally distributed. A circular rotating handle is provided below the first single-threaded screw rod 109; a first fixing groove 110 is provided below the testing machine, and the first fixing groove 110 is threadedly connected with the inside of the first fixing groove 110. Rotate the first single-threaded screw rod 109 to make the first single-threaded screw rod 109 push the first rotating plate 108 to be fixed on the tabletop, which can prevent the upper measuring component from moving its position, and the fixing method can increase the stability of the upper measuring component.
[0024] In this embodiment, as Figure 3 shown, the external structural dimensions of the lower part of the support leg 106 are consistent with the external structural dimensions of the sound insulation pad 107; a sound insulation pad 107 is provided below the support leg 106 to absorb the vibration energy generated during the operation of the testing machine and reduce the adverse effects of vibration on the structure of the testing machine itself and the measuring system. A shock absorber 105 is provided in the middle of the support leg 106. The vibration generated when the testing machine is working may affect the measurement accuracy of the sensor, resulting in inaccurate test results. The shock absorber 105 can effectively absorb and buffer these vibrations, ensure the smooth operation of the testing machine, and thus improve the accuracy and reliability of the measurement.
[0025] In this embodiment, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the second rotating plate 207 forms a rotating structure through the second single-threaded screw rod 206, and the external structure size of the second single-threaded screw rod 206 is consistent with the internal circular groove structure size of the second fixing groove 209. A number of evenly equal square anti-slip pads are provided on the surface wall of the second rotating plate 207. And the second fixing groove 209, the second single-threaded screw rod 206 and the second rotating plate 207 provided on the equipment shell 2, and a same set of parts are provided on one side of the control panel 101 and the equipment shell 2; on one side of the control panel 101, a set of the second fixing groove 209, the second single-threaded screw rod 206 and the second rotating plate 207 are provided for fixing one end of the measured item, and the other end is fixed to the other movable set. The second fixing groove 209, the second single-threaded screw rod 206 and the second rotating plate 207 are fixed, so that the fixed component that can be conveniently moved can first fix the measured item and then conduct the test, avoiding the loosening of the measured item.
[0026] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a number of cables are connected to one side of the control panel 101, and the control panel 101 is connected to the controller 3, the controller 3 is connected to the cylinder 202, the control panel 101 is connected to the force sensor 205, the force sensor 205 is connected to the displacement sensor 204, the strain sensing module 203 is connected to the displacement sensor 204, the magnetostrictive displacement sensor 208 is connected to the arrow 210 induction sheet, and the magnetostrictive displacement sensor 208 is connected to the control panel 101; the control panel 101 is provided with a microprocessor or a controller 3 as the core control unit, which is responsible for processing and coordinating the data of each sensor and controlling the operation of the controller 3 to control the cylinder 202. The data acquisition card is used to receive analog or digital signals from the force sensor 205, the strain sensing module 203, the displacement sensor 204, the magnetostrictive displacement sensor 208, etc., and convert them into processable data. The signal conditioning module processes the original signals collected by the sensors, such as amplification, filtering, linearization, etc., to improve the quality and stability of the signals. The communication interface, such as Ethernet, USB or serial port, etc., is used for data transmission and communication with a computer or other external devices. The control buttons or knobs, such as the start / stop button, the speed adjustment knob, etc., are used for the operator to manually control the start, stop and adjustment of some parameters of the calibration process. The display screen is used to display the data of the sensors, the calibration status, the parameter settings and other information in real time, facilitating the operator to monitor and adjust. The power supply module provides a stable power supply for each component on the control panel 101. The storage module is used to save the data, set parameters and historical records during the calibration process for subsequent analysis and reference.
[0027] In this embodiment, as Figure 1 ,Figure 2 , Figure 3 and Figure 4 As shown, the device shell 2 forms a sliding structure through the cylinder 202, and the internal circular groove structure size of the slider 201 is consistent with the outer wall structure size of the slide bar 104; the distance and position of the cylinder 202 are controlled by the controller 3, and the device shell 2 is pulled to move smoothly, simulating the pulling force during manual pulling, and then the measured force value is converted to facilitate the measurement of the pulling force.
[0028] In this embodiment, Figure 1 and Figure 2 As shown, the device shell 2 forms an elastic structure through the spring 4; the device shell 2 will produce shaking when it is suddenly started during the movement, and the elastic force of the spring 4 pulls the device shell 2 to make it more stable when moving, making the test data more accurate.
[0029] The use method and advantages of the utility model: When the tensile testing machine calibration device is used, the working process is as follows:
[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, first, the first fixing groove 110 under the fixing plate 1 is snapped into one end of the tabletop for fixation. The first single-threaded screw rod 109 rotates clockwise to push the first rotating plate 108 for fixation, facilitating the fixation of the fixing plate 1. The support leg 106 fits against the tabletop, and the shock absorber 105 dampens the running equipment, enhancing the stability of the equipment. Place the item to be measured on a set of second fixing grooves 209, second single-threaded screw rods 206, and second rotating plates 207 of the control panel 101. The item to be measured is placed between two symmetric second rotating plates 207. The second single-threaded screw rod 206 rotates clockwise for the two symmetric second rotating plates 207 to fix one end of the item to be measured. The other end is rotated by another set of movable second single-threaded screw rods 206 to rotate the second rotating plate 207 to fix the other end of the item to be measured, achieving stable fixation on both sides. The microprocessor or controller 3 in the control panel 101 receives the calibration instructions and parameter settings input by the operator. For the controller 3, the control panel 101 sends electrical signals to specify the movement speed, stroke, and action timing of the cylinder 202. These signals are transmitted to the controller 3 through the data cable, and the controller 3 then converts them into specific instructions suitable for the cylinder 202 to execute, thereby precisely controlling the telescopic action of the cylinder 202. Simulating the application of different magnitudes and directions, the cylinder 202 pulls the equipment shell 2 connected by bolts, enabling the equipment shell 2 to move smoothly on the slide bar 104 through the spring 4. The force sensor 205, strain sensing module 203, displacement sensor 204, and magnetostrictive displacement sensor 208 will feedback the detected data to the control panel 101 in real time. The data acquisition card in the control panel 101 receives these data and, after being processed by the signal conditioning module, transmits them to the microprocessor for analysis and calculation. The microprocessor compares the data feedback from the sensors with the preset calibration standards. If there is a deviation between the measured value and the standard value, it will adjust the action of the cylinder 202 or re-measure until the measurement result of the tensile testing machine meets the specified accuracy and accuracy requirements. During the entire calibration process, the display screen on the control panel 101 will display the data of each sensor, calibration progress, and results in real time for the operator to monitor and determine whether the calibration is successful. At the same time, the storage module will save all the data during the calibration process for subsequent reference and analysis.
[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Technical staff in this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.
Claims
1. A calibration device for a tensile testing machine, comprising a fixing plate (1), characterized in that: Above the fixed plate (1), there is an equipment shell (2). One side of the equipment shell (2) is welded with a spring (4). Above the fixed plate (1), there is a controller (3). One side of the equipment shell (2) is welded with a slider (201). The equipment shell (2) is installed with a force sensor (205) by screws. One side of the force sensor (205) is provided with a displacement sensor (204). One side of the displacement sensor (204) is provided with a strain sensing module (203). The inner wall of the equipment shell (2) is installed with a magnetostrictive displacement sensor (208) by screws. Above the side of the equipment shell (2), there is an arrow (210). In the middle above the equipment shell (2), there is a second fixing groove (209) installed by screws. Inside the second fixing groove (209), there is a second single-threaded screw rod (206) connected by threads. One side of the second single-threaded screw rod (206) is provided with a second rotating plate (207). Behind the equipment shell (2), there is a cylinder (202).
2. The calibration device for a tensile testing machine according to claim 1, characterized in that: Above the fixed plate (1), there is a control panel (101) installed by screws. Below the fixed plate (1), there is a first fixing groove (110) installed by screws. Inside the first fixing groove (110), there is a first single-threaded screw rod (109) connected by threads. Above the first single-threaded screw rod (109), there is a first rotating plate (108) rotatably connected. Above the fixed plate (1), there is a chute (103) installed by screws. Above the chute (103), there is a scale (102) glued. Inside the chute (103), there is a sliding rod (104) welded. Below the fixed plate (1), there is a support leg (106) welded. Below the support leg (106), there is a sound insulation pad (107) glued. One side of the support leg (106) is provided with a shock absorber (105). And the internal structure size of the first fixing groove (110) is consistent with the external structure size of the first single-threaded screw rod (109). And above the first single-threaded screw rod (109), there is a first rotating plate (108) connected by a bearing. On the upper surface of the first rotating plate (108), there are vertical anti-slip pads. A number of anti-slip pads are horizontally distributed. Below the first single-threaded screw rod (109), there is a circular rotating handle.
3. A calibration device for a tensile testing machine according to claim 2, characterized in that: The external structure size below the support leg (106) is consistent with the external structure size of the sound insulation pad (107).
4. A calibration device for a tensile testing machine according to claim 1, wherein: The second rotating plate (207) forms a rotating structure through the second single-threaded screw rod (206). And the external structure size of the second single-threaded screw rod (206) is consistent with the internal circular groove structure size of the second fixing groove (209). And on the surface of the second rotating plate (207), there are a number of evenly equal square anti-slip pads. And on the equipment shell (2), there are the second fixing groove (209), the second single-threaded screw rod (206) and the second rotating plate (207). On one side of the control panel (101), there is the same set of parts as the equipment shell (2).
5. A calibration device for a tensile testing machine according to claim 2, characterized in that: On one side of the said control panel (101), several cables are connected. Moreover, there are connections between the control panel (101) and the controller (3), between the controller (3) and the cylinder (202), between the control panel (101) and the force sensor (205), between the force sensor (205) and the displacement sensor (204), between the strain sensing module (203) and the displacement sensor (204), between the magnetostrictive displacement sensor (208) and the arrow (210) sensing piece, and between the magnetostrictive displacement sensor (208) and the control panel (101).
6. The calibration device for a tensile testing machine according to claim 1, characterized in that: The said equipment housing (2) forms a sliding structure through the cylinder (202), and the internal circular groove structure dimensions of the slider (201) are consistent with the outer wall structure dimensions of the slide bar (104).
7. A calibration device for a tensile testing machine according to claim 1, characterized in that: The said equipment housing (2) forms an elastic structure through the spring (4).