Mechanical testing system

Abstract

The application provides a mechanical testing system, belonging to the technical field of material testing. The mechanical testing system comprises a size measuring mechanism for measuring the size of a sample; a support frame, on which a stretching mechanism is arranged; a non-contact measuring mechanism and a contact measuring mechanism, which are arranged on the support frame through a first position adjusting mechanism and are used for measuring the deformation of the sample in the stretching process in a non-contact measuring mode and a contact measuring mode; a first heating mechanism and a second heating mechanism, which are oppositely arranged on the support frame through a second position adjusting mechanism and are used for heating the sample in the non-contact measuring mode and the contact measuring mode; a controller for controlling the working of the stretching mechanism, the non-contact measuring mechanism, the contact measuring mechanism, the second position adjusting mechanism, the first heating mechanism and the second heating mechanism; and storing the received size information and deformation information. The application has the advantages of simple structure, convenient operation and accurate testing of the mechanical properties of a small-size sample.

Description

Technical Field

[0001] This invention relates to the field of materials testing technology, and more specifically to a mechanical testing system. Background Technology

[0002] In critical sectors such as power, aerospace, chemical, and machinery manufacturing, metallic materials frequently face tensile and compressive loads at high temperatures. The tensile mechanical properties of these materials under high-temperature conditions are crucial for assessing the safe operation of equipment. Traditional mechanical property testing typically uses large specimens, which are easy to measure and do not require particularly high testing accuracy, only needing to meet predetermined standards. However, in practical applications, metallic materials may not fully meet the preparation conditions of standard specimens due to space constraints, special shapes, or size limitations. Furthermore, cutting standard specimens from metallic components can cause significant damage. Therefore, in these situations, only small-sized specimens are often available, necessitating mechanical property testing of these tiny metallic components.

[0003] Mechanical property testing typically requires specialized testing equipment. The measurement accuracy of this equipment directly affects the accuracy of the test results. Currently, the accuracy level of mechanical property testing equipment commonly used in engineering usually only needs to meet standard requirements, with errors generally controlled below ±0.5%. When testing large specimens, due to their large load and deformation parameters, the measurement errors of these devices have a relatively small impact on the results. However, for small or micro specimens, due to their small cross-sectional area and length, even small measurement errors can significantly affect the test results of material properties. Therefore, improving the accuracy of the measuring equipment is particularly crucial for the mechanical property testing of micro specimens.

[0004] To overcome the accuracy challenges in measuring the mechanical properties of micro-samples and to ensure the accuracy of test results, it is necessary to develop a high-precision mechanical property testing device specifically designed for micro-samples. Summary of the Invention

[0005] The purpose of this invention is to provide a mechanical testing system that solves the problems of low testing accuracy and inaccurate test results for micro-samples in the prior art.

[0006] To achieve the above objectives, embodiments of the present invention provide a mechanical testing system, the system comprising:

[0007] A dimensional measuring mechanism used to measure the dimensions of a specimen before and after tension.

[0008] A support frame is provided with a tensioning mechanism, which is used to carry the specimen and apply tensile force to the specimen for tensile testing.

[0009] The non-contact measuring mechanism and the contact measuring mechanism are mounted on the support frame via corresponding first position adjustment mechanisms; the spatial positions of the non-contact measuring mechanism and the contact measuring mechanism are adjusted by the corresponding first position adjustment mechanisms; in the non-contact measuring mode, the measuring port of the non-contact measuring mechanism is aligned with the sample to measure the deformation of the sample during the tensile process; in the contact measuring mode, the measuring head of the contact measuring mechanism contacts the sample to measure the deformation of the sample during the tensile process.

[0010] The first heating mechanism and the second heating mechanism are respectively arranged on the support frame through corresponding second position adjustment mechanisms. The spatial positions of the first heating mechanism and the second heating mechanism are adjusted by the corresponding second position adjustment mechanisms. The first heating mechanism is used to heat the sample in non-contact measurement mode, and the second heating mechanism is used to heat the sample in contact measurement mode.

[0011] The controller, connected to the dimensional measuring mechanism, the tensioning mechanism, the non-contact measuring mechanism, the contact measuring mechanism, the second position adjustment mechanism, the first heating mechanism, and the second heating mechanism, is used for: controlling the tensioning mechanism, the first heating mechanism, and the non-contact measuring mechanism and its corresponding second position adjustment mechanism based on non-contact measurement commands; controlling the tensioning mechanism, the second heating mechanism, and the contact measuring mechanism and its corresponding second position adjustment mechanism based on contact measurement commands; and storing dimensional information and deformation information.

[0012] Optionally, the system further includes:

[0013] An infrared temperature measuring mechanism is connected to the controller. The temperature measuring port of the infrared temperature measuring mechanism is aligned with the sample to measure the temperature value of the sample before stretching.

[0014] The controller is also used to store temperature values.

[0015] Optionally, the size measuring mechanism includes:

[0016] Support platform;

[0017] A clamping mechanism, provided on the support platform, is used to clamp the sample during dimensional measurement;

[0018] A dimensional measuring instrument is set on the support platform to measure the dimensional information of the sample before and after stretching.

[0019] Optionally, the clamping mechanism includes:

[0020] Two mounting brackets are slidably mounted on the support platform, and mounting plates are rotatably mounted on the top of the two mounting brackets;

[0021] The clamping claws are arranged opposite each other, and each clamping claw is slidably mounted on the mounting plate via a clamping slider. The clamping slider can slide on the mounting plate under the action of driving force. The clamping claws are used to clamp the sample.

[0022] Each clamping slider is equipped with a tightening screw. By rotating the tightening screw, the end of the tightening screw contacts the mounting plate, thus fixing the clamping slider to the mounting plate.

[0023] Optionally, the tensioning mechanism includes:

[0024] A fixing rod is installed on the support frame;

[0025] A tie rod is mounted on the support frame via a motion mechanism. The tie rod is located above the fixed rod. The bottom end of the fixed rod and the top end of the tie rod are used to connect the specimen. The motion mechanism is used to generate a vertical tensile force.

[0026] Optionally, the motion mechanism includes:

[0027] The crossbeam is slidably mounted on the support frame via a tension slider;

[0028] The first driving mechanism is disposed on the support frame and is used to generate driving force to drive the stretching slider to move.

[0029] Optionally, the pull rod is also connected to the motion mechanism via a coaxiality adjustment mechanism, which is used to adjust the coaxiality between the pull rod and the fixed rod.

[0030] Optionally, both the first heating mechanism and the second heating mechanism include:

[0031] Two heating blocks arranged opposite each other can be rotatably mounted on corresponding second position adjustment mechanisms. The two heating blocks can switch between open and closed states under the action of driving force. The two heating blocks have grooves in the middle. In the closed state, the grooves in the middle of the two heating blocks form a receiving cavity for accommodating the sample.

[0032] At least one heating block is provided with a measuring window;

[0033] In non-contact measurement mode, the measuring port of the non-contact measuring mechanism is aligned with the measuring window to measure the deformation of the specimen during the tensile process through the measuring window;

[0034] In contact measurement mode, the measuring head of the contact measuring mechanism passes through the measuring window to measure the amount of deformation of the specimen during tensile testing.

[0035] Optionally, the first position adjustment mechanism includes:

[0036] The first slide rail is set vertically;

[0037] The first slider is slidably mounted on the first slide rail. The first slider is provided with a positioning screw. By rotating the positioning screw, the end of the positioning screw contacts the first slide rail, thereby fixing the first slider on the first slide rail.

[0038] A connecting frame is provided, the rotating end of which is rotatably connected to a second slider. A non-contact measuring mechanism and a contact measuring mechanism are provided at the free ends of the corresponding connecting frames.

[0039] Optionally, the second position adjustment mechanism includes:

[0040] A vertically arranged second slide rail, on which a second slider is slidably mounted, and on which a gear is mounted;

[0041] A second driving mechanism is provided on the support frame. The driving end of the second driving mechanism is connected to the second slider and is used to generate driving force to drive the second slider to move.

[0042] A horizontally arranged connecting rod, the rotating end of which is rotatably connected to the second slider, and a first heating mechanism and a second heating mechanism are arranged at the free ends of the corresponding connecting rods;

[0043] A drive motor is mounted on the connecting rod. The drive shaft of the drive motor is connected to a gear via a synchronous belt. The drive motor is used to generate driving force to cause the connecting rod to rotate relative to the second slider.

[0044] This technical solution achieves dimensional measurement through a dimensional measuring mechanism. At the same time, non-contact and contact measuring mechanisms are set on the support frame, and corresponding first and second heating mechanisms are set to heat the material. It can achieve accurate measurement of small-sized samples through non-contact and contact measurement methods. The overall structure is simple and easy to operate, and can provide reliable data support for the evaluation of the mechanical properties of materials.

[0045] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0046] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0047] Figure 1 This is a schematic diagram of the structure of the first mechanical testing system provided by the present invention;

[0048] Figure 2This is a schematic diagram of the structure of the second mechanical testing system provided by the present invention;

[0049] Figure 3 This is a schematic diagram of the dimension measuring mechanism provided by the present invention;

[0050] Figure 4 This is a test schematic diagram of the dimension measuring mechanism provided by the present invention after angle adjustment;

[0051] Figure 5 This is a partial structural schematic diagram of the mechanical testing system provided by the present invention;

[0052] Figure 6 This is a partial structural schematic diagram of the tensioning mechanism provided by the present invention;

[0053] Figure 7 This is a schematic diagram of the coaxiality adjustment mechanism provided by the present invention;

[0054] Figure 8 This is a schematic diagram of the structure of the first heating mechanism or the second heating mechanism provided by the present invention;

[0055] Figure 9 This is a schematic diagram of the structure of the first position adjustment mechanism provided by the present invention;

[0056] Figure 10 This is a schematic diagram of the structure of the second position adjustment mechanism provided by the present invention.

[0057] Explanation of reference numerals in the attached figures

[0058] 1-Dimensional measuring mechanism; 2-Support frame; 3-Tension mechanism;

[0059] 4-Non-contact measuring mechanism; 5-Contact measuring mechanism; 6-First position adjustment mechanism;

[0060] 7-First heating mechanism; 8-Second heating mechanism; 9-Second position adjustment mechanism;

[0061] 10-Controller; 11-Lever platform; 12-Clamping mechanism;

[0062] 13 - Dimension measuring instrument; 20 - Infrared temperature measuring mechanism; 31 - Fixing rod;

[0063] 32-Pull rod; 33-Motion mechanism; 34-Coaxiality adjustment mechanism;

[0064] 61-First slide rail; 62-First slider; 63-Connecting bracket;

[0065] 71-Heating block; 91-Second slide rail; 92-Second slider;

[0066] 93-Gear; 94-Second drive mechanism; 95-Connecting rod;

[0067] 96 - Drive motor; 121 - Mounting bracket; 122 - Mounting plate;

[0068] 123-Clamping jaws; 124-Clamping slider; 125-Tightening screw;

[0069] 331-Crossbeam; 332-Tension slider; 333-First drive mechanism;

[0070] 341-Flange; 342-Fixing sleeve; 343-T-shaped rod;

[0071] 344 - Inner arc sleeve; 345 - Translation adjustment screw; 346 - Hole;

[0072] 347 - Angle adjusting top block; 348 - Angle rotating set screw; 621 - Positioning screw;

[0073] 701 - Groove; 702 - Measuring window. Detailed Implementation

[0074] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0075] In the embodiments of the present invention, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use.

[0076] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0077] The terms "parallel" and "perpendicular" do not mean that the components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that its direction is more parallel than "perpendicular," not that the structure must be completely parallel, but that it can be slightly tilted.

[0078] The terms "horizontal," "vertical," and "sag" do not imply that a component must be absolutely horizontal, vertical, or sagging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0079] Furthermore, terms like "roughly" and "basically" are used to indicate that the content does not require absolute precision, but rather allows for a certain degree of deviation. For example, "roughly equal" does not simply mean absolute equality; in actual production and operation, achieving absolute "equality" is difficult, and a certain degree of deviation is generally present. Therefore, besides absolute equality, "roughly equal to" also includes the aforementioned situation where a certain degree of deviation exists. Using this as an example, in other cases, unless otherwise specified, terms like "roughly" and "basically" have similar meanings.

[0080] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0081] Figure 1 This is a schematic diagram of the structure of the first mechanical testing system provided by the present invention; Figure 2 This is a schematic diagram of the structure of the second mechanical testing system provided by the present invention; Figure 3 This is a schematic diagram of the dimension measuring mechanism provided by the present invention; Figure 4 This is a test schematic diagram of the dimension measuring mechanism provided by the present invention after angle adjustment; Figure 5 This is a partial structural schematic diagram of the mechanical testing system provided by the present invention; Figure 6 This is a partial structural schematic diagram of the tensioning mechanism provided by the present invention; Figure 7 This is a schematic diagram of the coaxiality adjustment mechanism provided by the present invention; Figure 8 This is a schematic diagram of the structure of the first heating mechanism or the second heating mechanism provided by the present invention; Figure 9 This is a schematic diagram of the structure of the first position adjustment mechanism provided by the present invention; Figure 10 This is a schematic diagram of the structure of the second position adjustment mechanism provided by the present invention.

[0082] Because the measurement accuracy of mechanical property testing devices has a significant impact on test results, ordinary mechanical property testing devices are inspected according to general procedures, and their measurement error only needs to be controlled below ±0.5%. However, the measurement accuracy of sample size is generally 0.01 mm, and their design and manufacturing are based on standard samples, so they can only meet the testing requirements of standard-sized samples. Micro-samples, on the other hand, require much higher accuracy from the testing device, with measurement errors controlled below ±0.1%. Furthermore, micro-samples require even higher precision in their size measurement units, with a resolution below 0.00001 mm. Therefore, conventional mechanical property testing devices cannot meet the needs of micro-sample testing. To meet the performance measurement accuracy requirements of small-sized micro-samples, to more accurately test the mechanical properties of micro-samples, and thus accurately assess the safety status of related metal material products, this embodiment provides a mechanical testing system, such as... Figure 1-2 The system includes:

[0083] Dimension measuring mechanism 1 is used to measure the dimensions of the sample before and after tension.

[0084] A support frame 2 is provided with a tension mechanism 3, which is used to carry the specimen and apply tensile force to the specimen for tensile testing.

[0085] The non-contact measuring mechanism 4 and the contact measuring mechanism 5 are respectively mounted on the support frame 2 via corresponding first position adjustment mechanisms 6. In the non-contact measuring mode, the measuring port of the non-contact measuring mechanism 4 is aligned with the sample to measure the deformation of the sample during the tensile process. In the contact measuring mode, the measuring head of the contact measuring mechanism 5 contacts the sample to measure the deformation of the sample during the tensile process. The spatial positions of the non-contact measuring mechanism 4 and the contact measuring mechanism 5 are adjusted by the corresponding first position adjustment mechanisms 6.

[0086] The first heating mechanism 7 and the second heating mechanism 8 are respectively arranged opposite to each other on the support frame 2 through the corresponding second position adjustment mechanism 9. The first heating mechanism 7 is used to heat the sample in non-contact measurement mode, and the second heating mechanism 8 is used to heat the sample in contact measurement mode. The spatial positions of the first heating mechanism 7 and the second heating mechanism 8 are adjusted by the corresponding second position adjustment mechanism 9.

[0087] The controller 10 is connected to the dimension measuring mechanism 1, the tensioning mechanism 3, the non-contact measuring mechanism 4, the contact measuring mechanism 5, the second position adjusting mechanism 9, the first heating mechanism 7, and the second heating mechanism 8. It is used to control the tensioning mechanism 3, the non-contact measuring mechanism 4, the corresponding second position adjusting mechanism 9, and the first heating mechanism 7 based on the received non-contact measurement commands; to control the tensioning mechanism 3, the contact measuring mechanism 5, the corresponding second position adjusting mechanism 9, and the second heating mechanism 8 based on the received contact measurement commands; and to store the received dimension information and deformation information.

[0088] Specifically, in this embodiment, the dimensional measuring mechanism 1 can clamp the sample to measure its dimensions before and after the tensile test. The support frame 2 can be configured to include a base and two vertical support beams mounted on the base. The tops of the two vertical support beams are connected to each other via a horizontal connecting beam to ensure the overall structural strength. Additionally, a leveling mechanism is provided at the bottom of the base to keep the entire structure horizontal, ensuring the accuracy of data during subsequent mechanical testing. Furthermore, to ensure the accuracy of data measurement and improve applicability, a non-contact measuring mechanism 4 and a contact measuring mechanism 5 are respectively installed on one side of the two vertical support beams of the support frame 2 via a first position adjustment mechanism 6. The non-contact measuring mechanism 4 is used to measure the deformation of the sample during tensile testing in a non-contact measurement mode. The non-contact measuring mechanism 4 uses image, laser, or other methods to detect sample deformation, making it more suitable for smaller samples and ensuring data accuracy. The contact measuring mechanism 5 is used to measure the deformation of the sample during tensile testing in a contact measurement mode. The contact measuring mechanism 5 can be a deformation detection probe. Since the contact measuring mechanism 5 has lower accuracy than the non-contact measuring mechanism 4, it is more suitable for larger samples. The position switching between the non-contact measuring mechanism 4 and the contact measuring mechanism 5 can be achieved through the corresponding first position adjustment mechanism 6, so as to enable the insertion and removal of the non-contact measuring mechanism 4 and the contact measuring mechanism 5 in different measurement modes. In addition, in order to adapt to the non-contact measuring mechanism 4 and the contact measuring mechanism 5, a first heating mechanism 7 and a second heating mechanism 8 are respectively provided on the other side of the two vertical support beams of the support frame 2 through the second position adjustment mechanism 9. The first heating mechanism 7 is used to heat the sample in the non-contact measurement mode, and the second heating mechanism 8 is used to heat the sample in the contact measurement mode. The position switching between the first heating mechanism 7 and the second heating mechanism 8 can be achieved through the corresponding second position adjustment mechanism 9, so as to enable the insertion and removal of the first heating mechanism 7 and the second heating mechanism 8 in different measurement modes. In addition, to achieve intelligent testing, a controller 10 is set up. The controller 10 is connected to the dimensional measuring mechanism 1, the tensile mechanism 3, the non-contact measuring mechanism 4, the contact measuring mechanism 5, the second position adjustment mechanism 9, the first heating mechanism 7, and the second heating mechanism 8. The controller 10 is used to control the operation of the tensile mechanism 3, the non-contact measuring mechanism 4, the corresponding second position adjustment mechanism 9, and the first heating mechanism 7 based on the received non-contact measurement commands. The controller 10 is also used to control the operation of the tensile mechanism 3, the contact measuring mechanism 5, the corresponding second position adjustment mechanism 9, and the second heating mechanism 8 based on the received contact measurement commands. It is also used to store the received dimensional information and deformation information. In addition, it can obtain the tensile mechanical properties of the specimen based on the received dimensional information and deformation information.

[0089] Furthermore, such as Figure 2As shown, the system also includes:

[0090] An infrared temperature measuring mechanism 20 is connected to the controller 10. The temperature measuring port of the infrared temperature measuring mechanism 20 is aligned with the sample and used to measure the temperature value of the sample before stretching.

[0091] The controller 10 is also used to store the received temperature values.

[0092] Specifically, in this embodiment, the system further includes an infrared temperature measuring mechanism 20. The infrared temperature measuring mechanism 20 is mounted on one side of the support frame 2 via a bracket, and its measuring port is aligned with the sample for measuring the sample's temperature value before stretching. The controller 10 is also connected to the infrared temperature measuring mechanism 20 to store the received temperature values ​​and analyze the stored data to obtain the temperature field of the sample during heating. The infrared temperature measuring mechanism 20 is also used to detect the temperature of the high-temperature environment system during the heating process or the test, avoiding test errors caused by damage to the high-temperature environment system and ensuring the continuity and accuracy of the high-temperature environment.

[0093] Furthermore, such as Figure 3 As shown, the dimension measuring mechanism 1 includes:

[0094] Support platform 11;

[0095] The clamping mechanism 12 is disposed on the support platform 11 and is used to clamp the sample during the dimensional measurement process;

[0096] A dimensional measuring instrument 13 is set on the support platform 11 and is used to measure the dimensional information of the sample before and after stretching.

[0097] Specifically, in this embodiment, the dimensional measuring mechanism 1 includes a support platform 11 to provide a working platform. A clamping mechanism 12 and a dimensional measuring instrument 13 are disposed on the support platform 11. The clamping mechanism 12 is used to clamp the specimen before and after the tensile test, and the dimensional measuring instrument 13 measures the dimensions of the specimen before and after the tensile test. The dimensional measuring instrument 13 performs dimensional measurement visually by capturing an image of the specimen, analyzing the image, and outputting the dimensional information of the specimen. Since the structure of the clamping mechanism 12 is fixed, how to obtain the dimensional information of the object in the image based on the image is prior art known to those skilled in the art and will not be described in detail here. Further, the clamping mechanism 12 includes features capable of one-click automatic measurement and automatic input, with units in millimeters and an accuracy to 0.0001 mm.

[0098] like Figure 3-4 As shown, the clamping mechanism 12 includes:

[0099] Mounting bracket 121 is slidably mounted on the support platform 11, and mounting plate 122 is rotatably mounted on the top of the two mounting brackets 121;

[0100] The clamping claws 123 are arranged opposite to each other. Each clamping claw 123 is slidably mounted on the mounting frame 121 via a clamping slider 124. The clamping slider 124 can slide on the mounting frame 121 under the action of driving force. The clamping claws 123 are used to clamp the sample.

[0101] Each clamping slider 124 is provided with a tightening screw 125. By rotating the tightening screw 125, the end of the tightening screw 125 contacts the mounting plate 122, thereby fixing the clamping slider 124 on the mounting plate 122.

[0102] Specifically, in this embodiment, to achieve sample clamping, the clamping mechanism 12 is configured to include a mounting frame 121, which is slidably mounted on the support platform 11 via corresponding rails and sliders. This facilitates the installation of the sample onto the clamping claws 123 when the mounting frame 121 is pulled outward. After the sample is clamped, the mounting frame 121 is pushed inward, positioning the sample below the dimensional measuring instrument 13, thereby enabling dimensional detection. Furthermore, since the sample will break into two parts after a tensile test, the two opposing clamping claws 123 clamp the two broken parts of the sample respectively. Additionally, to facilitate clamping... The sample is held with each clamping claw 123 mounted on a clamping slider 124, allowing adjustment of the relative distance between the two clamping claws 123. Once the clamping slider 124 is in position, it is tightened by a tightening screw 125 to prevent displacement. Preferably, in this embodiment, to ensure the accuracy of dimensional testing, a mounting plate 122 is rotatably mounted on the top of the two mounting brackets 121 via a pin or bearing. The clamping slider 124 is slidably mounted on the mounting plate 122 via a corresponding track. Thus, during testing, the dimensional measurements of the sample in different directions can be achieved by rotating the mounting plate 122. Figure 3-4 The figures show test schematics before and after the sample is rotated 90 degrees. Additionally, to facilitate the rotation of the mounting plate 122, a rotating wheel is provided at the end of the mounting plate 122, allowing the mounting plate 122 to rotate by hand. Furthermore, to ensure that the clamping claw 123 can clamp and release the sample, the clamping claw 123 is configured to include a support rod, with three clamping rods at the end of the support rod. These three clamping rods can generate a certain deformation. The fixed ends of the three clamping rods are connected to the clamping slider 124. Simultaneously, external threads are provided on the outer wall of the support rod, and adjusting sleeves are fitted onto the three clamping rods. The first end of the adjusting sleeve is threadedly connected to the support rod, and the inner wall of the second end of the adjusting sleeve contacts the three clamping rods. By rotating the adjusting sleeve, the clamping and releasing of the three clamping rods is achieved.

[0103] In another embodiment, the clamping slider 124 can be fixed to the mounting plate 122 by means of an adjustable magnetic base.

[0104] In another embodiment, the clamping slider 124 can be driven directly by human power, or it can be driven by a retractable structure such as a lead screw and nut mechanism, an adjusting bolt, an electric cylinder, a hydraulic cylinder, or a pneumatic cylinder. When it is set as a bolt, the end of the adjusting bolt is connected to the clamping slider 124 through a bearing, and the clamping slider 124 is moved by rotating the bolt.

[0105] Furthermore, such as Figure 5-6 As shown, the tensioning mechanism 3 includes:

[0106] The fixing rod 31 is installed on the support frame 2;

[0107] A pull rod 32 is mounted on the support frame 2 via a motion mechanism 33. The pull rod 32 is located above the fixed rod 31. The bottom end of the fixed rod 31 and the top end of the pull rod 32 are connected to the sample. The motion mechanism 33 is used to generate a vertical tensile force.

[0108] Specifically, in this embodiment, to achieve the stretching of the sample, the stretching mechanism 3 is configured to include: a fixed rod 31, the bottom end of which is fixed to the base of the support frame 2; and a motion mechanism 33 is provided on the two vertical support beams of the support frame 2, which can move up and down along the two vertical support beams, and the pull rod 32 is fixed to the motion mechanism 33 to achieve synchronous movement. To facilitate sample installation, threaded mounting holes are provided at the top of the fixed rod 31 and the bottom of the pull rod 32, and external threads are provided at both ends of the sample. The sample is connected to the top of the fixed rod 31 and the bottom of the pull rod 32 via the threads, thereby controlling the upward movement of the motion mechanism 33 to achieve sample stretching. More specifically, since the connection between the sample and the top of the fixed rod 31 and the bottom of the pull rod 32 is achieved via threads, to facilitate sample installation and removal, the bottom end of the fixed rod 31 is connected to the base of the support frame 2 via a thrust bearing, allowing the fixed rod 31 to rotate, thereby achieving sample installation.

[0109] In another embodiment, a snap-fit ​​method is used to connect the sample to the top end of the fixing rod 31 and the bottom end of the tension rod 32. The tensioning mechanism 3 also includes a high-precision load sensor, connected to the controller, for detecting the load value during the tensioning process and sending the collected load value to the controller for storage.

[0110] Furthermore, such as Figure 9 As shown, the motion mechanism 33 includes:

[0111] The crossbeam 331 is slidably mounted on the support frame 2 via the tension slider 332;

[0112] The first drive mechanism 333 is disposed on the support frame 2 and is used to generate driving force to drive the stretching slider 332 to move.

[0113] Specifically, in this embodiment, in order to install the tie rod 32 and ensure that the tensile force is relatively uniform, the top end of the tie rod 32 is set in the middle of the crossbeam 331, and both ends of the crossbeam 331 are slidably set on the two vertical support beams of the support frame 2 through the tension slider 332 to ensure the stability of the connection mechanism; the first drive mechanism 333 is connected to the tension slider 332 and can generate driving force to drive the tension slider 332 to move up and down along the two vertical support beams of the support frame 2.

[0114] Preferably, the first driving mechanism 333 can be set as one, driving only one of the tension sliders 332; or it can be set as two that move synchronously, driving the corresponding tension sliders 332 respectively; specifically, it can be set as a screw and nut mechanism, electric cylinder, hydraulic cylinder, pneumatic cylinder or other telescopic structure, thereby driving the crossbeam 331, thereby causing the tension sliders 332 to slide and move on the support frame 2.

[0115] Furthermore, such as Figure 5-6 , Figure 9-10 As shown, the pull rod 32 is also connected to the motion mechanism 33 through a coaxiality adjustment mechanism 34, which is used to adjust the coaxiality between the pull rod 32 and the fixed rod 31.

[0116] Specifically, in this embodiment, in order to ensure the accuracy of the tensile test data and eliminate the data deviation caused by the slight misalignment between the pull rod 32 and the fixed rod 31, the motion mechanism 33 is also connected through a coaxiality adjustment mechanism 34. The coaxiality adjustment mechanism 34 can finely adjust the displacement of the pull rod 32 in the XY direction, thereby adjusting the coaxiality between the pull rod 32 and the fixed rod 31 so that the pull rod 32 and the fixed rod 31 are on a vertical line.

[0117] In one implementation, such as Figure 7 As shown, the coaxiality adjustment mechanism 34 can be configured to include:

[0118] Flange 341 is connected to crossbeam 331;

[0119] A hollow fixing cylinder 342 is fixed to a flange 341, and an adjustment hole is provided on the bottom surface inside the fixing cylinder 342.

[0120] T-shaped rod 343 is installed inside fixed cylinder 342. The bottom end of T-shaped rod 343 passes through the adjustment hole of fixed cylinder 342 and connects to the top end of pull rod 32.

[0121] An inner arc sleeve 344 is disposed between a T-shaped rod 343 and a fixed cylinder 342. A translation adjustment screw 345 is disposed on the inner arc sleeve 344. The translation adjustment screw 345 contacts the T-shaped rod 343. A hole 346 is provided on the fixed cylinder 342 at a position opposite to the translation adjustment screw 345. By inserting an adjusting rod into the hole 346 and rotating the translation adjustment screw 345, the T-shaped rod 343 can be translated and adjusted, thereby achieving displacement adjustment on the horizontal plane. The contact surface between the inner arc sleeve 344 and the T-shaped rod 343 is an arc-shaped surface.

[0122] An angle adjustment top block 347 is also provided between the inner arc surface sleeve 344 and the fixed cylinder 342. An angle rotation top screw 348 is provided opposite to the fixed cylinder 342. The angle rotation top screw 348 contacts the angle adjustment top block 347. During the adjustment process, the angle rotation top screw 348 is rotated, and the concave and convex structure (arc surface) ensures that the center is rotating, thereby realizing the verticality adjustment of the T-shaped rod 343.

[0123] More specifically, in this embodiment, the fixed cylinder 342 is configured as a circular structure, the inner arc sleeve 344 is configured as a square shape, and four translation adjustment screws 345, angle adjustment top blocks 347, and angle rotation screws 348 are each configured and arranged opposite to each other. Through the above adjustment method, the pull rod 32 can be adjusted within a small range in both the horizontal and vertical directions, thereby ensuring the coaxiality between the pull rod 32 and the fixed rod 31, ensuring that the pull rod 32 and the fixed rod 31 are on a straight vertical line, thus guaranteeing the accuracy of the test data.

[0124] In another embodiment, the coaxiality adjustment mechanism 34 may be configured to include:

[0125] The fixed cylinder has a hollow interior. An adjustment hole is located on the bottom surface of the fixed cylinder, and four limiting grooves are arranged opposite each other on the bottom surface. An adjusting slider can slide in each limiting groove. Four adjusting screws are arranged opposite each other on the side wall of the fixed cylinder, and the corresponding adjusting screws are connected to the adjusting sliders. Rotating the corresponding screws adjusts the displacement of the corresponding adjusting slider. A T-shaped rod is located inside the fixed cylinder, with its stepped surface contacting the top surface of the adjusting slider. The slider supports the weight of the T-shaped rod, and the bottom end of the T-shaped rod passes through the top of the connecting rod 32 connected to the fixed cylinder. During adjustment, by cooperating with two opposing screws, loosening one and tightening the other, the displacement of the T-shaped rod in the direction of the two screws is adjusted, thereby driving the connecting rod to move and achieving horizontal displacement adjustment.

[0126] More specifically, during the coaxiality adjustment process, a standard coaxiality test bar is connected to the top of the fixed rod 31 and the bottom of the pull rod 32. Multiple strain gauges are spaced apart on the coaxiality test bar, and the strain gauges are connected to a coaxiality measuring instrument. When the coaxiality between the pull rod 32 and the fixed rod 31 is adjusted by the coaxiality adjustment mechanism 34, the coaxiality measuring instrument can display the coaxiality status between the two in real time to guide the coaxiality adjustment.

[0127] Furthermore, such as Figure 8 As shown, both the first heating mechanism 7 and the second heating mechanism 8 include:

[0128] Two heating blocks 71 arranged opposite each other can be rotatably mounted on the corresponding second position adjustment mechanism 9. The two heating blocks 71 can switch between open and closed states under the action of driving force. A groove 701 is provided in the middle of the two heating blocks 71. In the closed state, the groove 701 in the middle of the two heating blocks 71 forms a receiving cavity for accommodating the sample.

[0129] At least one heating block 71 is provided with a measuring window 702;

[0130] In non-contact measurement mode, the measuring port of the non-contact measuring mechanism 4 is aligned with the measuring window 702 to measure the deformation of the specimen during the tensile process through the measuring window 702.

[0131] In contact measurement mode, the measuring head of the contact measuring mechanism 5 passes through the measuring window 702 to measure the amount of deformation of the specimen during the tensile process.

[0132] Specifically, in this embodiment, the first heating mechanism 7 and the second heating mechanism 8 have the same external dimensions and can be configured as cylindrical or square structures according to actual usage. When configured as a circular mechanism, the heating blocks 71 are all semi-circular structures with a through groove 701. Since the heating blocks 71 can be rotatably mounted on the second position adjustment mechanism 9, the opening and closing of the two heating blocks 71 can be adjusted by external force. In the closed state, the groove 701 in the middle of the two heating blocks 71 forms a receiving cavity for accommodating the sample. Furthermore, to facilitate temperature measurement and the deformation of the sample located in the receiving cavity during the test, a measuring window 702 is provided on at least one heating block 71. In non-contact measurement mode, the measuring port of the non-contact measuring mechanism 4 is aligned with the measuring window 702 to measure the deformation of the sample during the tensile process. In contact measurement mode, the measuring head of the contact measuring mechanism 5 passes through the measuring window 702 to measure the deformation of the sample during the tensile process. The opening position of the measuring window 702 on the first heating mechanism 7 and the second heating mechanism 8 can be determined according to actual conditions, and the size of the measuring window 702 can also be determined according to actual conditions. Preferably, grooves are formed at the edges of the two heating blocks 71, which together serve as a measuring window 702 when closed.

[0133] Furthermore, such as Figure 9 As shown, the first position adjustment mechanism 6 includes:

[0134] The first vertically set slide rail 61;

[0135] The first slider 62 is slidably mounted on the first slide rail 61. The first slider 62 is provided with a positioning screw 621. By rotating the positioning screw 621, the end of the positioning screw 621 contacts the first slide rail 61, thereby fixing the first slider 62 on the first slide rail 61.

[0136] A connecting frame 63 is provided, the rotating end of which is rotatably connected to a second slider 92. A non-contact measuring mechanism 4 and a contact measuring mechanism 5 are provided at the free ends of the corresponding connecting frame 63.

[0137] Specifically, in this embodiment, since the test samples may have different sizes, in order to ensure the deformation detection of the samples, and due to the existence of different test modes, it is necessary to adjust the position and height of the non-contact measuring mechanism 4 or the contact measuring mechanism 5, as well as to insert and cut out. A first slide rail 61 is vertically installed on the two vertical support beams of the support frame 2, and a first slider 62 is slidably installed on the first slide rail 61. The first slider 62 can move up and down along the first slide rail 61, and a positioning screw is provided on the first slider 62 to fix its position. When an external force is applied to the first slider 62, causing it to move to a designated position, the positioning screw 621 is tightened to make its end contact with the first slide rail 61, thereby fixing the first slider 62 onto the first slide rail 61. In addition, to avoid the non-contact measuring mechanism 4 or the contact measuring mechanism 5 causing spatial obstruction when installing the sample on the tensile mechanism 3, a connecting frame 63 is rotatably mounted on the second slider 92 via a bearing, and the non-contact measuring mechanism 4 and the contact measuring mechanism 5 are then mounted on the free ends of the corresponding connecting frames 63. When it is necessary to install and remove the specimen, the free end of the connecting frame 63 is rotated away from the support frame 2 by rotating the connecting frame 63. After installation, when testing, the free end of the connecting frame 63 is rotated back to be close to the support frame 2, so that in the non-contact measurement mode, the measuring port of the non-contact measuring mechanism 4 is aligned with the measuring window 702 to measure the deformation of the specimen during the tensile process through the measuring window 702; and in the contact measurement mode, the measuring head of the contact measuring mechanism 5 passes through the measuring window 702 to measure the deformation of the specimen during the tensile process.

[0138] More specifically, since the measuring head of the contact measuring mechanism 5 needs to pass through the measuring window 702 to measure the deformation of the sample during the tensile process, in order to avoid the contact measuring mechanism 5 rubbing against the second heating mechanism 8 during the rotation of the connecting frame 63, the contact measuring mechanism 5 is set in a telescopic manner at the free end of the connecting frame 63, so that after the connecting frame 63 moves into place, the contact measuring mechanism 5 can be pushed into the measuring window 702. For example, when the contact measuring mechanism 5 is set as a deformation detection probe, the deformation detection probe is slidably set in the sleeve, and the extension and retraction of the deformation detection probe is realized under external force.

[0139] Furthermore, such as Figure 10 As shown, the second position adjustment mechanism 9 includes:

[0140] A vertically arranged second slide rail 91, a second slider 92 slidably disposed on the second slide rail 91, and a gear 93 disposed on the second slider 92;

[0141] The second drive mechanism 94 is disposed on the support frame 2. The drive end of the second drive mechanism 94 is connected to the second slider 92 and is used to generate driving force to drive the second slider 92 to move.

[0142] A horizontally arranged connecting rod 95, the rotating end of which is rotatably connected to the second slider 92, and the first heating mechanism 7 and the second heating mechanism 8 are arranged at the free ends of the corresponding connecting rod 95;

[0143] A drive motor 96 is mounted on the connecting rod 95. The drive shaft of the drive motor 96 is connected to the gear 93 via a synchronous belt 97. The drive motor 96 is used to generate driving force to make the connecting rod 95 rotate relative to the second slider 92.

[0144] Specifically, since the test samples may have different sizes, in order to ensure accurate heating of the samples, and due to the existence of different test modes, it is necessary to adjust the position and height of the first heating mechanism 7 or the second heating mechanism 8, as well as to insert and cut out the samples. A second slide rail 91 is vertically installed on the two vertical support beams of the support frame 2, and a second slider 92 is slidably installed on the second slide rail 91. The second slider 92 can move up and down along the second slide rail 91 under the driving force provided by the second driving mechanism 94. A horizontally installed connecting rod 95 is rotatably installed on the second slider 92, and the rotating end of the connecting rod 95 can rotate around the second slider 92. The first heating mechanism 7 and the second... The two heating mechanisms 8 are located at the free ends of the corresponding connecting rods 95. In order to adjust the rotation angle of the connecting rods 95, a drive motor 96 is provided on each connecting rod 95. At the same time, a gear 93 is provided on each second slider 92. The drive shaft of the drive motor 96 is connected to the gear 93 through a synchronous belt 97. Since the drive motor 96 is fixedly connected to the connecting rod 95 and the gear is also fixed on the second slider 92, when the drive motor 96 rotates, the connecting rod 95 and the second slider 92 can rotate. Therefore, the rotation angle of the connecting rod 95 can be adjusted, thereby realizing the insertion and cutting.

[0145] More specifically, a specific interlocking mechanism is provided between the second position adjustment mechanism 9 that mounts the first heating mechanism 7 and the second heating mechanism 8, thereby ensuring that the first heating mechanism 7 and the second heating mechanism 8 will not collide during movement.

[0146] More specifically, in this solution, the rotatable components are connected by means of bearings, pins, etc.

[0147] Through the aforementioned technical means, this solution enables high-precision mechanical testing of micro-samples, solving the problem of not being able to obtain standard samples for performance testing, meeting the performance testing needs of micro-samples of different shapes and sizes, and improving the accuracy of mechanical property testing of micro-samples. It significantly improves the measurement accuracy of micro-samples, contributing to the improvement of performance testing accuracy. The high-precision mechanical testing system incorporates automation in both measurement and testing units, effectively improving testing efficiency and greatly reducing human error. The high-precision mechanical testing system integrates functions related to performance testing, such as original size measurement, temperature environment control, tensile test control, and post-fracture size measurement, realizing a complete process for micro-sample performance testing.

[0148] In addition, this solution also provides a tensile property testing procedure for micro-samples, using a non-contact measurement mode for sample testing, including:

[0149] 1. System conditioning before the test:

[0150] Turn on the system power and check if each part is functioning properly. Use the coaxiality testing device to adjust the coaxiality of the high-precision testing host to the optimal level by adjusting the coaxiality adjustment system.

[0151] 2. Pre-test specimen size measurement:

[0152] The micro sample is clamped and fixed by the gripping jaws of the size measuring mechanism. The mounting bracket is moved so that the sample is placed under the size measuring instrument. Click the "Start" button to automatically measure the size of the micro sample. Rotate the clamp to the vertical direction and measure the size of the micro sample again automatically, and calculate the average value.

[0153] 3. Heating:

[0154] The miniature sample is mounted on the tensile mechanism, the first heating mechanism is moved to the corresponding position, the first heating mechanism is turned on for heating, and the infrared temperature measuring mechanism is used for temperature measurement.

[0155] 4. Experimental Procedure:

[0156] After the temperature of the sample reaches the set target temperature, keep it at that temperature for 30 minutes, move the non-contact measuring mechanism to the corresponding position, and start the tensile test until the micro sample breaks, then stop the test.

[0157] 5. Measurement of specimen dimensions after the test:

[0158] After the high-temperature environment temperature drops to room temperature, the broken sample is removed. The micro sample is clamped and fixed by the clamping jaws of the size measuring mechanism. The broken sample is spliced ​​together by moving the slide rail. The mounting bracket is moved so that the sample is placed under the size measuring instrument. Click the "start" button to automatically measure the fracture size of the micro sample. Rotate the fixture to the vertical direction and measure the fracture size of the micro sample again automatically, and calculate the average value.

[0159] 6. Complete the report:

[0160] Fill out the corresponding test report based on the obtained test data to complete the testing of the micro-samples.

[0161] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0162] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a microcontroller, chip, or processor to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0163] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details described above. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0164] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A mechanical testing system, characterized in that, The system includes: Dimension measuring mechanism (1) is used to measure the dimensions of the sample before and after stretching; A support frame (2) is provided with a tensioning mechanism (3), which is used to carry the specimen and apply tensile force to the specimen for tensile testing. The non-contact measuring mechanism (4) and the contact measuring mechanism (5) are mounted on the support frame (2) by corresponding first position adjustment mechanisms (6). The spatial positions of the non-contact measuring mechanism (4) and the contact measuring mechanism (5) are adjusted by the corresponding first position adjustment mechanisms (6). In the non-contact measuring mode, the measuring port of the non-contact measuring mechanism (4) is aligned with the sample to measure the deformation of the sample during the tensile process. In the contact measuring mode, the measuring head of the contact measuring mechanism (5) is in contact with the sample to measure the deformation of the sample during the tensile process. The first heating mechanism (7) and the second heating mechanism (8) are respectively arranged on the support frame (2) by the corresponding second position adjustment mechanism (9). The spatial position of the first heating mechanism (7) and the second heating mechanism (8) is adjusted by the corresponding second position adjustment mechanism (9). The first heating mechanism (7) is used to heat the sample in non-contact measurement mode, and the second heating mechanism (8) is used to heat the sample in contact measurement mode. The controller (10) is connected to the dimension measuring mechanism (1), the tensioning mechanism (3), the non-contact measuring mechanism (4), the contact measuring mechanism (5), the second position adjustment mechanism (9), the first heating mechanism (7), and the second heating mechanism (8), and is used to: control the operation of the tensioning mechanism (3), the first heating mechanism (7), the non-contact measuring mechanism (4), and their corresponding second position adjustment mechanism (9) based on non-contact measurement commands; control the operation of the tensioning mechanism (3), the second heating mechanism (8), the contact measuring mechanism (5), and their corresponding second position adjustment mechanism (9) based on contact measurement commands; and store dimension information and deformation information.

2. The mechanical testing system according to claim 1, characterized in that, The system also includes: An infrared temperature measuring mechanism (20) is connected to the controller (10). The temperature measuring port of the infrared temperature measuring mechanism (20) is aligned with the sample to measure the temperature value of the sample before stretching. The controller (10) is also used to store temperature values.

3. The mechanical testing system according to claim 1, characterized in that, The dimension measuring mechanism (1) includes: Support platform (11); A clamping mechanism (12) is provided on the support platform (11) for clamping the sample during the dimensional measurement process; A dimensional measuring instrument (13) is set on the support platform (11) for measuring the dimensional information of the sample before and after stretching.

4. The mechanical testing system according to claim 3, characterized in that, The clamping mechanism (12) includes: Two mounting brackets (121) are slidably mounted on the support platform (11), and mounting plates (122) are rotatably mounted on the top of the two mounting brackets (121); The clamping claws (123) are arranged opposite to each other. Each clamping claw (123) is slidably mounted on the mounting plate (122) via a clamping slider (124). The clamping slider (124) can slide on the mounting plate (122) under the action of driving force. The clamping claws (123) are used to clamp the sample. Each clamping slider (124) is provided with a tightening screw (125). By rotating the tightening screw (125), the end of the tightening screw (125) contacts the mounting plate (122), thereby fixing the clamping slider (124) on the mounting plate (122).

5. The mechanical testing system according to claim 1, characterized in that, The stretching mechanism (3) includes: A fixing rod (31) is provided on the support frame (2); A pull rod (32) is mounted on the support frame (2) via a motion mechanism (33). The pull rod (32) is located above the fixed rod (31). The bottom end of the fixed rod (31) and the top end of the pull rod (32) are used to connect the sample. The motion mechanism (33) is used to generate a vertical tensile force.

6. The mechanical testing system according to claim 5, characterized in that, The motion mechanism (33) includes: The crossbeam (331) is slidably mounted on the support frame (2) by means of a tension slider (332); A first drive mechanism (333) is disposed on the support frame (2) for generating a driving force to drive the stretching slider (332) to move.

7. The mechanical testing system according to claim 5, characterized in that, The pull rod (32) is also connected to the motion mechanism (33) via a coaxiality adjustment mechanism (34), which is used to adjust the coaxiality between the pull rod (32) and the fixed rod (31).

8. The mechanical testing system according to claim 1, characterized in that, Both the first heating mechanism (7) and the second heating mechanism (8) include: Two oppositely arranged heating blocks (71) can be rotatably mounted on the corresponding second position adjustment mechanism (9). The two heating blocks (71) can switch between open and closed states under the action of driving force. A groove (701) is provided in the middle of the two heating blocks (71). In the closed state, the groove (701) in the middle of the two heating blocks (71) forms a receiving cavity for accommodating the sample. At least one heating block (71) is provided with a measuring window (702); In the non-contact measurement mode, the measuring port of the non-contact measuring mechanism (4) is aligned with the measuring window (702) to measure the deformation of the specimen during the tensile process through the measuring window (702); In contact measurement mode, the measuring head of the contact measuring mechanism (5) passes through the measuring window (702) to measure the amount of deformation of the specimen during the tensile process.

9. The mechanical testing system according to claim 1, characterized in that, The first position adjustment mechanism (6) includes: The first vertically set slide rail (61); The first slider (62) is slidably disposed on the first slide rail (61). The first slider (62) is provided with a positioning screw (621). By rotating the positioning screw (621), the end of the positioning screw (621) contacts the first slide rail (61), thereby fixing the first slider (62) on the first slide rail (61). A connecting frame (63) is provided, the rotating end of which is rotatably connected to a second slider (92). A non-contact measuring mechanism (4) and a contact measuring mechanism (5) are provided at the free ends of the corresponding connecting frames (63).

10. The mechanical testing system according to claim 1, characterized in that, The second position adjustment mechanism (9) includes: A vertically arranged second slide rail (91), on which a second slider (92) is slidably arranged, and on which a gear (93) is arranged; A second drive mechanism (94) is provided on the support frame (2). The drive end of the second drive mechanism (94) is connected to the second slider (92) to generate a driving force to drive the second slider (92) to move. A horizontally arranged connecting rod (95) is provided, the rotating end of which is rotatably connected to the second slider (92). The first heating mechanism (7) and the second heating mechanism (8) are provided at the free ends of the corresponding connecting rods (95). A drive motor (96) is mounted on the connecting rod (95). The drive shaft of the drive motor (96) is connected to the gear (93) via a synchronous belt (97). The drive motor (96) is used to generate driving force to make the connecting rod (95) rotate relative to the second slider (92).

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