A device for measuring the gauge length of a metal tensile specimen

Abstract

The application belongs to the technical field of inspection and detection, and particularly relates to a metal tensile specimen gauge length measurement auxiliary device, which comprises a bottom plate base, a fixing module, an electromagnetic module, a movable clamping module and a clamping module for driving the clamping module to move to clamp a specimen are arranged on the bottom plate base, the fixing module and the clamping module clamp two ends of the specimen respectively, the electromagnetic module adsorbs to fix the specimen, and the fixing module, the electromagnetic module, the clamping module and the clamping module are arranged on the same straight line; wherein the clamping module comprises a lead screw and a seat plate, the seat plate is fixed vertically on the bottom plate base, the lead screw is threadedly connected with the seat plate, and the end of the lead screw is rotationally connected with the clamping module. The application effectively reduces the measurement error by combining the electromagnetic fixing and mechanical fixing, and improves the reliability and accuracy of the measurement result.

Description

Technical Field

[0001] This application belongs to the field of inspection and testing technology, and specifically relates to an auxiliary device for measuring the gauge length of a metal tensile specimen. Background Technology

[0002] Tensile testing is the most basic and widely used test method in the mechanical property testing of materials. Before conducting a tensile test, the raw material needs to be made into a tensile specimen that conforms to the shape specified in the relevant standards. Before the test, the specimen needs to be placed on a horizontal table, and the original gauge length is marked on the tensile specimen according to the cross-sectional area of ​​the parallel length portion of the specimen. After the test, the gauge length after fracture should also be measured to calculate the elongation after fracture.

[0003] When measuring the gauge length after fracture, the fracture surfaces of the specimen must be tightly joined to ensure the accuracy of the measurement data. However, in actual measurements, the specimen is prone to movement, increasing the difficulty of the measurement and potentially leading to inaccurate values. This, in turn, affects the accuracy of the elongation after fracture and the performance evaluation of the material. Utility Model Content

[0004] The purpose of this application is to provide an auxiliary device for measuring the gauge length of metal tensile specimens to solve existing problems.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] An auxiliary device for measuring the gauge length of a metal tensile specimen includes:

[0007] The base plate is provided with a fixing module, an electromagnetic module, a movable clamping module, and a clamping module that drives the clamping module to move to clamp the sample. The fixing module and the clamping module clamp the two ends of the sample respectively, and the electromagnetic module attracts and fixes the sample. The fixing module, electromagnetic module, clamping module and clamping module are arranged on the same straight line.

[0008] The clamping module includes a lead screw and a base plate. The base plate is vertically fixed on the base plate, the lead screw is threadedly connected to the base plate, and the end of the lead screw is rotatably connected to the clamping module.

[0009] This application may further include the following technical solution: the clamping module includes a clamping plate and a support roller fixed to the bottom of the clamping plate.

[0010] This application may further include the following technical solution: the clamping plate includes a first surface and a second surface; the first surface is provided with a support groove for supporting the sample; the second surface is provided with a connecting hole; and a rotary bearing for connecting the end of the lead screw is provided in the connecting hole.

[0011] This application may further include the following technical solutions: the support groove includes a right-angle groove with openings in both horizontal and vertical directions, or the support groove includes a groove with an opening in only one horizontal direction.

[0012] This application may further include the following technical solution: the electromagnetic module includes a magnetic attraction component, the magnetic attraction component includes an electromagnet, a power supply and a switch, and the electromagnet, the power supply and the switch are connected in series.

[0013] This application may further include the following technical solution: the electromagnetic module further includes a slide rail, the slide rail is fixed on the base plate, and the bottom of the magnetic attraction component is provided with a sliding groove, the sliding groove is connected to the slide rail to allow the magnetic attraction component to slide freely along the direction of the slide rail.

[0014] This application may further include the following technical solution: the clamping module further includes a fixing baffle, and at least two fixing baffles are arranged side by side so that the seat plate is fixedly inserted between the two fixing baffles.

[0015] The present application may further include the following technical solution: the clamping module further includes an auxiliary baffle, the auxiliary baffle and the fixed baffle are arranged side by side, and an installation notch is provided between the auxiliary baffle and the fixed baffle, the installation notch is used to accommodate the seat plate.

[0016] This application may further include the following technical solution: the clamping module further includes a rotating handle, which is fixed to the end of the lead screw.

[0017] This application may further include the following technical solution: the base plate is also provided with a scale for determining the length of the sample.

[0018] Beneficial effects:

[0019] This application, through the above-mentioned technical solution, combines electromagnetic and mechanical fixing to enable the sample to be quickly clamped and fixed, effectively reducing measurement errors caused by misalignment of the fracture surface of the sample due to human placement or displacement of the fracture surface of the sample during measurement, thereby improving the reliability and accuracy of the measurement results. At the same time, since no additional fixing of the fracture surface of the sample is required, clamping and fixing can be achieved by operating only one end face, thereby increasing the clamping and fixing speed and improving the detection efficiency. Furthermore, the device has a simple structure, low cost, and good versatility. Attached Figure Description

[0020] Figure 1 This is a top view schematic diagram of an auxiliary device for measuring the gauge length of a metal tensile specimen according to this application;

[0021] Figure 2 This is a side cross-sectional view of an auxiliary device for measuring the gauge length of a metal tensile specimen, as described in this application.

[0022] Figure 3 This is a schematic diagram of the electromagnetic components of an auxiliary device for measuring the gauge length of a metal tensile specimen according to this application.

[0023] The attached figures are labeled as follows: 1. Base plate; 2. Fixing module; 3. Electromagnetic component; 4. Slide rail; 5. Support roller; 6. Clamping plate; 7. Fixing baffle; 8. Seat plate; 9. Lead screw; 10. Rotating handle; 11. Auxiliary baffle; 12. Electromagnet; 13. Power supply; 14. Switch; 15. Sample; 16. Scale. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to specific examples and accompanying drawings. Exemplary embodiments will be described in detail here, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0025] The following will refer to the appendices in the embodiments of this application. Figure 1-3 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] An auxiliary device for measuring the gauge length of a metal tensile specimen includes:

[0027] The base plate 1 includes a fixing module 2, an electromagnetic module, a movable clamping module, and a clamping module that drives the clamping module to move and clamp the sample 15. The fixing module 2 and the clamping module clamp the two ends of the sample 15, respectively. The fixing module 2 can be a fixing block with grooves for accommodating the ends of the sample 15. After the sample 15 is placed in the groove, the side of the sample 15 placed therein is fixed. Since the sample 15 usually contains iron, the electromagnetic module is provided to attract and fix the sample 15. Since the sample 15 is usually elongated, the axes of symmetry of the fixing module 2, electromagnetic module, clamping module, and clamping module on the base plate 1 are usually aligned on the same straight line, so that the axis of symmetry of the sample 15 is also on the same straight line. This facilitates fixing the sample 15 in a clamped and fixed state, reduces measurement errors caused by the displacement of the fracture surface of the sample 15, and improves the reliability and accuracy of the measurement results.

[0028] The clamping module includes a lead screw 9 and a base plate 8. The base plate 8 is vertically fixed to the base plate 1. The lead screw 9 has an external thread, and the base plate 8 has an internal thread. The lead screw 9 passes through the base plate 8 and is threadedly connected to the base plate 8. Since the base plate 8 is fixed to the base plate 1, the lead screw 9 can move left and right by rotating on the base plate 8. The end of the lead screw 9 is rotatably connected to the clamping module, so that the lead screw can drive the clamping module at the end of the lead screw 9 to move left and right by rotating.

[0029] In some embodiments, the clamping module includes a clamping plate 6 and a support roller 5 fixed to the bottom of the clamping plate 6. By setting the support roller 5, the friction between the clamping plate 6 and the base plate 1 can be reduced, the service life of the equipment can be extended, and the applied force of the rotating operating screw 9 can be reduced, making it easier for the user to operate.

[0030] In some embodiments, the clamping plate 6 is vertically arranged and includes a first surface and a second surface arranged opposite to each other in the vertical direction. The first surface faces the sample 15 and has a support groove for supporting the sample 15. The second surface faces away from the sample 15 and has a connecting hole. A rotary bearing for connecting the end of the lead screw 9 is provided in the connecting hole. After the rotary bearing is connected to the end of the lead screw 9, the rotational force is eliminated as the end of the lead screw 9 rotates. This enables the rotating lead screw 9 to be rotatably connected to the clamping plate 6 to maintain the same horizontal displacement. This allows the lead screw 9 to drive the clamping plate 6 to move, causing the sample 15 on the clamping plate 6 to move towards the fixing module 2 for clamping, thus achieving a clamping effect.

[0031] In some embodiments, the support groove includes a right-angled groove with openings in both horizontal and vertical directions, or the support groove includes a recess with an opening in only one horizontal direction. The right-angled groove with openings in both horizontal and vertical directions facilitates direct placement of the sample 15 from top to bottom, and allows for easy removal of the sample 15 by simply lifting it upwards after the test. The recess with an opening in only one horizontal direction provides better fixation of the sample 15, reducing the risk of injury caused by the sample 15 popping out due to excessive clamping.

[0032] In some embodiments, since the fracture surface of the sample 15 is usually located in the middle of the sample 15, and the fracture surface is easily subject to relative displacement due to external forces, thus causing measurement errors, the electromagnetic module is positioned directly below the fracture surface to firmly attract and clamp the fracture surface after assembly, thereby reducing the influence of external forces on the sample 15 and improving measurement accuracy. The electromagnetic module includes a magnetic attraction assembly comprising an electromagnet 12, a power supply 13, and a switch 14. The electromagnet 12, power supply 13, and switch 14 are connected in series, thereby controlling the attraction of the sample 15 during measurement and its separation after measurement via the switch 14.

[0033] In some embodiments, since the left end of the sample 15 is confined within the fixed module 2 during measurement, while the right end is confined within the movable clamping module, and different samples 15 may have different lengths and fracture locations, the magnetic attraction component of the electromagnetic module is configured as a movable structure. This allows the user to set the corresponding adsorption position of the electromagnetic component 3 based on the fracture surface position or length of the sample 15. The electromagnetic module also includes a slide rail 4, which is fixed to the base plate 1. The bottom of the magnetic attraction component is provided with a groove, which engages with the slide rail 4 to allow the magnetic attraction component to slide freely along the direction set by the slide rail 4.

[0034] In some embodiments, the clamping module further includes a fixing baffle 7, which is symmetrically arranged on both sides of the lead screw 9. The fixing baffle 7 is fixedly connected to the base plate 1 and the seat plate 8 respectively. The fixing baffle 7 is mainly used to strengthen the fixed connection between the seat plate 8 and the base plate 1.

[0035] In some embodiments, the clamping module further includes an auxiliary baffle 11, with the fixed baffle 7 arranged side by side on both sides of the lead screw 9, and an installation notch is provided between the auxiliary baffle 11 and the fixed baffle 7 for mounting the seat plate 8. By setting the auxiliary baffle 11, the lead screw 9 can be protected, and the position of the seat plate 8 can also be quickly switched using the auxiliary baffle 11.

[0036] In some embodiments, the clamping module further includes a rotating handle 10, which is fixed to the end of the lead screw 9, thereby reducing the difficulty of rotating the lead screw 9 and improving the user experience. Optionally, the rotating handle 10 is provided with a rubber sleeve to increase static friction and improve user comfort.

[0037] In some embodiments, the base plate 1 is further provided with a scale 16 for determining the length of the sample 15. The scale 16 can be an electronic scale 16 or an image of a planar scale 16, facilitating marking, measurement, and other tasks, simplifying operation, and effectively meeting practical needs. The electronic scale 16 includes at least a sensor and a display. The sensor determines the relative displacement between the clamping plate 6 and the electronic scale 16 after clamping, thereby determining the length data of the sample 15, and sending the length data of the sample 15 to the display for convenient and accurate acquisition of experimental results by the user.

[0038] When using the device, firstly, one end of the broken sample 15 is embedded into the fixing module 2. Then, the electromagnetic component 3 on the slide rail 4 is moved to directly below the fracture surface of the sample 15. The electromagnetic component 3 is activated to attract the sample 15 and assemble the fracture surface of the sample 15. Then, depending on the length of the sample 15, the appropriate position is selected: inserting the seat plate 8 between the fixed baffles 7 or between the auxiliary baffle 11 and the fixed baffles 7. Then, the handle 10 is rotated to drive the lead screw 9 to move and embed the other end of the sample 15 into the clamping module. The handle 10 is rotated again to drive the lead screw 9 to move and clamp the sample 15, so that the cross-section of the sample 15 is tightly joined. Finally, the gauge length of the clamped sample 15 is determined with the help of the scale 16, and the elongation is calculated.

[0039] The terms "upper" and "lower" are used to describe the relative positions of the various structures in the accompanying drawings. They are only for clarity of description and are not intended to limit the scope of implementation of this application. Any changes or adjustments to the relative positions without substantially altering the technical content shall also be considered within the scope of implementation of this application.

[0040] It should be noted that, in this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] Furthermore, in this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The above are merely preferred embodiments of this application and are not intended to limit the application in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the protection scope of this application.

Claims

1. An auxiliary device for measuring the gauge length of a metal tensile specimen, characterized in that, include: The base plate is provided with a fixing module, an electromagnetic module, a movable clamping module, and a clamping module that drives the clamping module to move to clamp the sample. The fixing module and the clamping module clamp the two ends of the sample respectively, and the electromagnetic module attracts and fixes the sample. The fixing module, electromagnetic module, clamping module and clamping module are arranged on the same straight line. The clamping module includes a lead screw and a base plate. The base plate is vertically fixed on the base plate, the lead screw is threadedly connected to the base plate, and the end of the lead screw is rotatably connected to the clamping module.

2. The auxiliary device for measuring the gauge length of a metal tensile specimen according to claim 1, characterized in that, The clamping module includes a clamping plate and support rollers fixed to the bottom of the clamping plate.

3. The auxiliary device for measuring the gauge length of a metal tensile specimen according to claim 2, characterized in that, The clamping plate includes a first surface and a second surface. The first surface is provided with a support groove for supporting the sample, and the second surface is provided with a connecting hole. A rotary bearing for connecting the end of the lead screw is provided in the connecting hole.

4. The auxiliary device for measuring the gauge length of a metal tensile specimen according to claim 3, characterized in that, The support groove includes a right-angled groove with openings in both horizontal and vertical directions, or the support groove includes a groove with an opening in only one horizontal direction.

5. The auxiliary device for measuring the gauge length of a metal tensile specimen according to claim 1, characterized in that, The electromagnetic module includes a magnetic attraction component, which includes an electromagnet, a power supply, and a switch, and the electromagnet, power supply, and switch are connected in series.

6. The auxiliary device for measuring the gauge length of a metal tensile specimen according to claim 5, characterized in that, The electromagnetic module also includes a slide rail, which is fixed to the base plate. The bottom of the magnetic attraction component is provided with a sliding groove, which is connected to the slide rail to allow the magnetic attraction component to slide freely along the direction set by the slide rail.

7. The auxiliary device for measuring the gauge length of a metal tensile specimen according to claim 1, characterized in that, The clamping module also includes a fixing baffle, and at least two fixing baffles are arranged side by side so that the seat plate is fixedly inserted between the two fixing baffles.

8. The auxiliary device for measuring the gauge length of a metal tensile specimen according to claim 7, characterized in that, The clamping module also includes an auxiliary baffle, which is arranged side by side with the fixed baffle, and an installation notch is provided between the auxiliary baffle and the fixed baffle for accommodating the base plate.

9. The auxiliary device for measuring the gauge length of a metal tensile specimen according to claim 1, characterized in that, The clamping module also includes a rotating handle, which is fixed to the end of the lead screw.

10. The auxiliary device for measuring the gauge length of a metal tensile specimen according to claim 1, characterized in that, The base plate is also equipped with a scale for determining the length of the sample.

Images