Magnetic attraction force testing device and tensile machine

Abstract

The utility model discloses a magnetic attraction force testing device and a tensile machine. The testing device comprises a magnet fixing part and a product fixing part. The magnet fixing piece is used for fixing the magnet; the product fixing part and the magnet fixing part are oppositely arranged, and the product fixing part is used for placing a to-be-tested product so as to measure the magnetic attraction force of the to-be-tested product when the to-be-tested product is separated from the magnet; the product fixing piece is provided with a first groove along a central shaft, the first groove is used for accommodating a to-be-tested product, the to-be-tested product is provided with at least one positioning hole, the product fixing piece is also provided with a through hole along the vertical direction of the central shaft, the testing device comprises a fixing shaft, and the fixing shaft penetrates through the through hole and is in butt joint with the positioning hole of the to-be-tested product. Therefore, the to-be-tested product is fixed on the product fixing piece. By means of the mode, the product to be tested can be stably connected with the product fixing piece when receiving the external force, so that the external force applied when the product to be tested is separated from the magnet can accurately represent the magnetic attraction force of the product to be tested, and the accuracy of magnetic attraction force testing is improved.

Description

Technical Field

[0001] The present application relates to the field of magnetic force testing technology, and in particular to a magnetic attraction testing device and a tensile testing machine. Background Art

[0002] Existing pipe products made of metal materials such as steel usually have a certain degree of magnetism, which affects the operation of other devices when the products are used in certain special industrial scenarios. Therefore, efficient and accurate measurement of the magnetic attraction of products is of great significance to the development and application of products.

[0003] The existing magnetic attraction test device adjusts the magnetic force generated by the electromagnet so that the product to be tested has a certain displacement relative to the electromagnet as test data, and the structure is complex. In addition, the position of the product to be tested cannot be effectively fixed, which makes the product to be tested easy to fall off during the displacement between the product to be tested and the electromagnet, making the accuracy of the magnetic attraction test low. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the present application provides a magnetic attraction testing device and a tensile testing machine.

[0005] In order to solve the technical problems existing in the prior art, the present application provides a first technical solution: a magnetic attraction force testing device is provided, including a magnet fixing part and a product fixing part. The magnet fixing part is used to fix the magnet; the product fixing part is arranged opposite to the magnet fixing part, and the product fixing part is used to place the product to be tested, so as to measure the magnetic attraction force of the product to be tested when the product to be tested is separated from the magnet; wherein the product fixing part is provided with a first groove along the central axis, and the first groove is used to accommodate the product to be tested, and the product to be tested is provided with at least one positioning hole, and the product fixing part is also provided with a through hole in the vertical direction of the central axis, and the testing device includes a fixed shaft, and the fixed shaft is passed through the through hole and docked with the positioning hole of the product to be tested, so as to fix the product to be tested on the product fixing part.

[0006] Optionally, the testing device further includes a base and a displacement assembly, wherein the displacement assembly is disposed above the base, one of the magnet fixing and the product fixing is detachably connected to the base, and the other of the magnet fixing and the product fixing is detachably connected to the displacement assembly, and the displacement assembly is used to move the magnet fixing or the product fixing to separate the product to be tested from the magnet.

[0007] Optionally, the base is connected to one of the magnet fixing member and the product fixing member through threads, and the displacement assembly is connected to the other of the magnet fixing member and the product fixing member through threads.

[0008] Optionally, the displacement assembly is used to receive a preset pulling force applied externally, and separate the magnet from the product to be tested at a constant speed under the action of the preset pulling force, wherein the preset pulling force ranges from 0 to 5N and the constant speed is 5mm / min.

[0009] Optionally, an extension direction of the fixed axis is perpendicular to a central axis of the product to be tested.

[0010] Optionally, the product to be tested is provided with a plurality of groups of the positioning holes, which are arranged along the central axis of the product to be tested and form a circular array, and each group of the positioning holes includes at least one positioning hole; or, the product to be tested is provided with three groups of the positioning holes, each group of the positioning holes includes a first positioning hole and a second positioning hole, and the first positioning hole and the second positioning hole are respectively distributed at two ends of the product to be tested, and the fixed axis is used to dock with the plurality of groups of the first positioning holes or the plurality of groups of the second positioning holes of the product to be tested.

[0011] Optionally, the testing device further comprises a pressing plate, the magnet fixing member is provided with a second groove along the central axis, the second groove is used to accommodate the magnet, the pressing plate is movably arranged on a side of the magnet fixing member away from the second groove, the pressing plate abuts against the magnet to fix the magnet on the magnet fixing member.

[0012] Optionally, the magnet fixing member is provided with a second groove along the central axis, and the magnet fixing member also includes a first connecting member, the first connecting member is provided at the bottom of the second groove, and a second connecting member is also provided on the side of the magnet facing the second groove, and the first connecting member is clamped with the second connecting member to fix the magnet on the magnet fixing member.

[0013] Optionally, the magnet fixing member is connected to the magnet via a snap connection, or the magnet fixing member is connected to the magnet via a magnetic connection.

[0014] In order to solve the technical problems existing in the prior art, the present application provides a first technical solution: a tensile testing machine is provided, comprising the testing device and a tensile output member as described above, wherein the tensile output member is connected to the displacement assembly of the testing device, and the tensile output member is used to apply a preset tensile force to the displacement assembly to separate the magnet from the product to be tested.

[0015] Compared with the prior art, the test device of the present application includes a magnet fixture and a product fixture. The magnet fixture is used to fix the magnet; the product fixture is arranged opposite to the magnet fixture, and the product fixture is used to place the product to be tested, so as to measure the magnetic attraction of the product to be tested when the product to be tested is separated from the magnet; the product fixture is provided with a first groove along the central axis, and the first groove is used to accommodate the product to be tested, and the product to be tested is provided with at least one positioning hole, and the product fixture is also provided with a through hole in the vertical direction of the central axis, and the test device includes a fixed shaft, which is passed through the through hole and docked with the positioning hole of the product to be tested, so as to fix the product to be tested on the product fixture. In the above manner, the product to be tested can be stably connected to the product fixture when receiving an external force, so that the external force applied when the product to be tested is separated from the magnet can accurately characterize the magnetic attraction of the product to be tested, thereby improving the accuracy of the magnetic attraction test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a testing device provided by the present application;

[0018] Figure 2 yes Figure 1 A structural schematic diagram of an embodiment of a product fixing member;

[0019] Figure 3 yes Figure 2 A cross-sectional view of the product fixing along section BB;

[0020] Figure 4 yes Figure 1 A schematic structural diagram of an embodiment of a magnet fixing member;

[0021] Figure 5 yes Figure 1 A schematic structural diagram of another embodiment of a magnet fixing member;

[0022] Figure 6 It is a structural schematic diagram of another embodiment of the testing device provided by the present application. DETAILED DESCRIPTION

[0023] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present application.

[0024] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "set", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or connected through an intermediate medium. For ordinary technicians in this field, if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of this application, the directional indications are only used to explain the relative position relationship, movement, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0026] See also Figure 1-3 , Figure 1 is a structural schematic diagram of an embodiment of a testing device provided by the present application, Figure 2 yes Figure 1 A schematic structural diagram of an embodiment of a product fixing member, Figure 3 yes Figure 2 The cross-sectional view of the product fixing along the BB section. Figure 1-3 As shown, the test device 10 of this embodiment includes a magnet fixing member 31 and a product fixing member 32. The magnet fixing member 31 of the test device 10 is used to fix the magnet; the product fixing member 32 is arranged opposite to the magnet fixing member 31, and the product fixing member 32 is used to place the product 34 to be tested, so as to measure the magnetic attraction of the product 34 to be tested when the product 34 to be tested is separated from the magnet.

[0027] Specifically, the product fixing part 32 is provided with a first groove 321 along the central axis, the first groove 321 is used to accommodate the product to be tested 34, the product to be tested 34 is provided with at least one positioning hole 341, and the product fixing part 32 is also provided with a through hole 322 in the vertical direction of the central axis, and the penetration direction of the through hole 322 is approximately perpendicular to the central axis. The testing device 10 includes a fixed shaft 35, the fixed shaft 35 is penetrated through the through hole 322 and docked with the positioning hole 341 of the product to be tested 34. That is, when the through hole 322 docks with the positioning hole 341, the fixed shaft 35 is penetrated between the two holes, so that the product to be tested 34 is clamped on the product fixing part 32, so that the product to be tested 34 is relatively fixed, and the product to be tested 34 is not easily separated from the product fixing part 32 under the action of external force.

[0028] Among them, the product to be tested 34 may be provided with at least one positioning hole 341, the shapes of the positioning hole 341 and the through hole 322 correspond to the shape of the fixed shaft 35, the fixed shaft 35 is docked with the positioning hole 341, and the fixed shaft 35 is used to assist the relative fixation of the product to be tested 34 and the product fixing part 32, so that the product to be tested 34 can maintain a relatively stable position during the test process. For example, the product to be tested 34 is pulled by an external force and separated from the magnet during the test process, and the direction of the external force is opposite to the direction of the magnetic attraction, so that the test device 10 can measure the magnetic attraction of the product to be tested 34 by measuring the external force applied when the product to be tested 34 is separated from the magnet. In a possible implementation, the test device 10 can separate the product to be tested 34 from the magnet by applying an external force to any one of the product fixing part 32 and the magnet fixing part 31, which is not specifically limited here.

[0029] The magnet fixing part 31 is used to fix the magnet. For example, the magnet can be fixed to the magnet fixing part 31 by means of snaps, fixing pins, riveting, welding, etc. The product fixing part 32 is used to be fixed on a certain platform, and the product 34 to be tested is placed on the first groove 321 of the product fixing part 32. The user can limit the position of the product 34 to be tested by inserting the fixing shaft 35 into the positioning hole 341 and the through hole 322. After the magnetic attraction test is completed, the user can also pull out the fixing shaft 35 to release the limit of the product 34 to be tested and allow the product 34 to be separated from the product fixing part 32 and test the next product. The operation is simple and is conducive to improving the user experience. In a possible implementation, the fixed shaft 35 may be provided with a first shaft body and a second shaft body, the first shaft body being used to be inserted into the through hole 322, and the second shaft body being used to be inserted into the positioning hole 341, and the cross-sectional area of ​​the second shaft body being smaller than the cross-sectional area of ​​the first shaft body, so that when the fixed shaft 35 is inserted into place, the fixed shaft 35 is restricted from continuing to move along the direction of the product to be tested 34, thereby reducing the possibility of product deformation caused by mechanical collision or the like during positioning of the product to be tested 34.

[0030] In the embodiment of the present application, the product fixing part 32 is provided with a first groove 321 along the central axis, the first groove 321 is used to accommodate the product to be tested 34, the product to be tested 34 is provided with at least one positioning hole 341, the product fixing part 32 is also provided with a through hole 322 in the vertical direction of the central axis, and the testing device 10 includes a fixed shaft 35, the fixed shaft 35 is passed through the through hole 322 and docked with the positioning hole 341 of the product to be tested 34, so as to fix the product to be tested 34 on the product fixing part 32. In the above manner, the product to be tested 34 can be stably connected with the product fixing part 32 when receiving an external force, so that the external force applied when the product to be tested 34 is separated from the magnet can accurately represent the magnetic attraction of the product to be tested 34, thereby improving the accuracy of the magnetic attraction test.

[0031] In one embodiment, the test device 10 further includes a base 11 and a displacement assembly 21. The displacement assembly 21 is disposed above the base 11; the magnet fixing member 31 is used to fix the magnet, and the product fixing member 32 is used to fix the product to be tested 34; one of the magnet fixing member 31 and the product fixing member 32 is detachably connected to the base 11, and the other of the magnet fixing member 31 and the product fixing member 32 is detachably connected to the displacement assembly 21; the magnet and the product to be tested 34 are disposed correspondingly, and the displacement assembly 21 is used to move the magnet fixing member 31 or the product fixing member 32 to separate the product to be tested 34 from the magnet and measure the magnetic attraction of the product to be tested 34.

[0032] Specifically, one of the magnet fixing member 31 and the product fixing member 32 is detachably connected to the base 11, and the other of the magnet fixing member 31 and the product fixing member 32 is detachably connected to the displacement assembly 21, so that the magnet is arranged corresponding to the product to be tested 34. Among them, the detachable connection method includes but is not limited to a snap connection, a threaded connection, a pin connection, and a key connection. The user can adjust the connection method according to actual needs, and no specific limitation is made here.

[0033] The displacement assembly 21 is used to move along the first direction under the action of an external force, and drive the magnet fixing member 31 or the product fixing member 32 connected thereto to be relatively close to another fixing member, so that when the product to be tested 34 is magnetic, the magnet and the product to be tested 34 can fit together under the action of magnetic attraction. For example, the displacement assembly 21 is connected to the magnet fixing member 31, and the displacement assembly 21 moves along the side close to the base 11 to drive the magnet to approach the product to be tested 34, so that the magnet and the product to be tested 34 fit together. The displacement assembly 21 is also used to drive the magnet fixing member 31 or the product fixing member 32 connected thereto to be relatively away from another fixing member, so that the magnet and the product to be tested 34 are separated, and the test device 10 obtains the magnetic attraction test result of the product to be tested 34 by recording the peak data when the magnet and the product to be tested 34 are separated. For example, the displacement assembly 21 is connected to the magnet fixing member 31, and the displacement assembly 21 moves along the side away from the base 11 to drive the magnet and the product to be tested 34 to separate.

[0034] In the embodiment of the present application, the magnet fixing part 31 is connected to the base 11 and one of the displacement components 21, and the product fixing part 32 is connected to the other of the base 11 and the displacement component 21. The user can adjust the setting position of the product to be tested 34 and the magnet according to actual testing requirements, so that the displacement component 21 can perform a magnetic attraction test by moving the magnet fixing part 31 or the product fixing part 32, thereby improving the stability and practicality of the magnetic attraction test.

[0035] Optionally, the extension direction of the fixed axis 35 is perpendicular to the central axis of the product to be tested 34 .

[0036] Specifically, the extension direction of the fixed shaft 35 can be the axial direction of the fixed shaft 35. When the product to be tested 34 is placed on the product fixing part 32, the central axis of the product to be tested 34 is parallel to the direction of gravity, and the extension direction of the fixed shaft 35 is perpendicular to the central axis of the product to be tested 34, so that when the fixed shaft 35 is docked with the positioning hole 341, it can limit the movement of the product to be tested 34 in the direction of gravity, thereby improving the position stability of the product to be tested 34 and further improving the stability of the magnetic attraction test.

[0037] Optionally, the product to be tested 34 is provided with a plurality of groups of positioning holes 341 , which are arranged along the central axis of the product to be tested 34 to form an annular array, and each group of positioning holes 341 includes at least one positioning hole 341 .

[0038] Specifically, the product to be tested 34 may be provided with a plurality of groups of positioning holes 341. The product to be tested 34 may be provided as a columnar body, for example, the product to be tested 34 may be a tube with a receiving cavity in the middle, and the product to be tested 34 is surrounded by the tube wall. The plurality of groups of positioning holes 341 are arranged at intervals along the central axis of the product to be tested 34 and are provided on the tube wall to form an annular array, for example, the spacing between each group of positioning holes 341 and adjacent positioning holes 341 is equal. Each group of positioning holes 341 includes at least one positioning hole 341, and the fixing shaft 35 may be fixed by docking with at least two positioning holes 341 in the plurality of groups of positioning holes 341.

[0039] Furthermore, the product to be tested 34 is provided with three groups of positioning holes 341, each group of positioning holes 341 includes a first positioning hole 341 and a second positioning hole 341, the first positioning hole 341 and the second positioning hole 341 are respectively distributed at both ends of the product to be tested 34, and the fixed shaft 35 is used to dock with multiple groups of first positioning holes 341 or multiple groups of second positioning holes 341 of the product to be tested 34.

[0040] Specifically, the product to be tested 34 is provided with three groups of positioning holes 341, and the three groups of positioning holes 341 are divided into three equal parts along the central axis of the product to be tested 34, so that the first group of positioning holes 341, the second group of positioning holes 341 and the third group of positioning holes 341 are respectively distributed at 120°, 240° and 360° of the product to be tested 34.

[0041] Each group of positioning holes 341 further includes a first positioning hole 341 and a second positioning hole 341, and the first positioning hole 341 and the second positioning hole 341 are respectively distributed at both ends of the product to be tested 34. For example, when the product to be tested 34 is fixed on the product fixing part 32, the first positioning hole 341 is located at one end of the product to be tested 34 close to the product fixing part 32, and the second positioning hole 341 is located at one end of the product to be tested 34 away from the product fixing part 32. The fixing shaft 35 is used to dock with multiple groups of first positioning holes 341 or multiple groups of second positioning holes 341 of the product to be tested 34. For example, the fixing shaft 35 can dock with the positioning holes 341 at one end of the product to be tested 34 close to or away from the product fixing part 32 to achieve relative fixation of the product to be tested 34 and the product fixing part 32.

[0042] Optionally, the displacement component 21 is used to receive a preset pulling force applied from the outside, and separate the magnet from the product to be tested 34 at a constant speed under the action of the preset pulling force.

[0043] Specifically, the displacement component 21 can be connected to an output component capable of providing a force, so that the output component can apply a preset pulling force to the displacement component 21. After receiving the preset pulling force, the displacement component 21 drives the product fixing member 32 or the magnet fixing member 31 to move at a constant speed under the action of the preset pulling force, so as to separate the magnet from the product to be tested 34.

[0044] Furthermore, the preset tension range is 0-5N, and the constant speed is 5mm / min.

[0045] Among them, the preset tension of the displacement component 21 is related to the type of the tested product, the strength of the magnetic attraction, etc. In this embodiment, the preset tension of the displacement component 21 is between 0 and 5N. For example, the preset tension of the displacement component 21 can be 0, 1, 2, 3, 4 or 5N. The displacement component 21 moves at a constant speed under the preset tension, and the constant speed is 5mm / min. In an optional embodiment, the user can adjust the tension and speed of the displacement component 21 according to the yield strength and tensile strength of the product 34 to be tested to ensure the test accuracy of the test device 10.

[0046] Optionally, the base 11 is connected to one of the magnet fixing member 31 and the product fixing member 32 through threads, and the displacement assembly 21 is connected to the other of the magnet fixing member 31 and the product fixing member 32 through threads.

[0047] The base 11 is connected to one of the magnet fixing part 31 and the product fixing part 32 through threads. For example, a bolt is provided on the side of the base 11 close to the displacement component 21, and an internal threaded hole is provided in the magnet fixing part 31 and the product fixing part 32, so as to achieve connection through the threaded cooperation of the bolt or the internal threaded hole; or, the testing device 10 also includes screws, and the base 11 and one of the magnet fixing part 31 and the product fixing part 32 are provided with corresponding mounting holes, and the connection is achieved through the alignment cooperation of the screw and the mounting hole. Similarly, the way in which the displacement component 21 is connected to the other of the magnet fixing part 31 and the product fixing part 32 through threads is similar to the above, and will not be repeated here; the user can adjust it according to the actual connection requirements without specific limitation.

[0048] Optionally, in one embodiment, see Figure 4 , Figure 4 yes Figure 1 A schematic structural diagram of an embodiment of a magnet fixing member. Figure 4 As shown, the testing device 10 also includes a pressing plate 311. The magnet fixing member 31 is provided with a second groove (not shown) along the central axis. The second groove is used to accommodate the magnet 36. The pressing plate 311 is movably arranged on a side of the magnet fixing member 31 away from the second groove. The pressing plate 311 abuts against the magnet 36 to fix the magnet 36 on the magnet fixing member 31.

[0049] Specifically, the side of the magnet fixing part 31 away from the second groove is the edge position of the magnet fixing part 31, and the pressing plate 311 can be rotatably set at the edge of the magnet fixing part 31; the pressing plate 311 rotates to the first angle, and the pressing plate 311 abuts against the magnet 36 placed on the second groove. The pressing plate 311 is used to limit the movement of the magnet 36 along the extension direction of the central axis, so that when the test device 10 drives the magnet 36 and the product 34 to be tested to be displaced by the externally applied pulling force, the pulling force is not reduced by the movement between the magnet 36 and the magnet fixing part 31, so that the pulling force can be equal to the magnetic attraction between the magnet 36 and the product 34 to be tested and is tested as a representation of the magnetic attraction, thereby improving the accuracy of the magnetic attraction test. Furthermore, the pressing plate 311 can also be movably connected to the edge of the magnet fixing part 31 by means of positioning pins, buckles, etc., which are not specifically limited here.

[0050] In another embodiment, see Figure 5 , Figure 5 yes Figure 1 A schematic structural diagram of another embodiment of a magnet fixing member. Figure 5As shown, the magnet fixing member 31 is provided with a second groove along the central axis, and the magnet fixing member 31 also includes a first connecting member 312, which is arranged at the bottom of the second groove, and a second connecting member 313 is also arranged on the side of the magnet 36 facing the second groove, and the first connecting member 312 is clamped with the second connecting member 313 to fix the magnet 36 on the magnet fixing member 31.

[0051] Specifically, the first connecting member 312 and the second connecting member 313 can be configured as structures such as hooks that can be entangled or linked with each other, so that the testing device 10 can fix the magnet 36 on the magnet fixing member 31 through the clamping connection between the first connecting member 312 and the second connecting member 313. When the displacement component 21 pulls the magnet fixing member 31 or the product fixing member 32, the magnet 36 is not easily separated from the magnet fixing member 31 under the action of the external pulling force, thereby improving the stability of the testing device 10 and improving the accuracy of the magnetic attraction test.

[0052] In another embodiment, the magnet fixing member 31 and the magnet 36 are connected by snap-fitting, or the magnet fixing member 31 and the magnet 36 are connected by magnetism.

[0053] Specifically, at least part of the base of the magnet fixing member 31 can be configured as a magnetic base, so that when the magnet 36 is placed on the second groove, the magnet 36 can be fixed to the designated position of the second groove by the magnetic attraction between the magnet 36 and the magnetic base. Alternatively, a buckle is provided on the magnet fixing member 31, and a slot is provided on the magnet 36, and the magnet 36 is fixed to the magnet fixing member 31 by buckling the slot on the buckle, and by the elastic force between the slot and the buckle and / or by the interference fit between the slot and the buckle.

[0054] Further, in other possible implementations, the test device 10 may also include two fixed shafts 35, the first fixed shaft 35 is passed through the through hole 322 of the product fixing part 32 and the positioning hole 341 of the product 34 to fix the product 34 to be tested to the product fixing part 32; the second fixed shaft 35 is also passed through the holes of the magnet fixing part 31 and the magnet 36 to fix the magnet 36 to the magnet fixing part 31. The user can adjust the fixing method between the magnet 36 and the magnet fixing part 31 according to the magnetic attraction range and fixing strength of the product in actual use, which is not specifically limited here.

[0055] Optionally, see Figure 6 , Figure 6 FIG. 1 is a schematic diagram of the structure of another embodiment of the testing device provided by the present application. Figure 6As shown, the testing device 10 also includes a controller 41 and a display 42. The controller 41 is connected to the displacement assembly 21 and the display 42 respectively. The controller 41 is used to receive the tension data of the displacement assembly 21 when the product 34 to be tested is separated from the magnet 36, and display the tension data on the display 42.

[0056] Specifically, the controller 41 may be a CPU (Central Processing Unit) or an electronic chip with signal processing capabilities. For example, the controller 41 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The display 42 is used to display preset information.

[0057] Among them, when the displacement component 21 drives the magnet fixing part 31 or the product fixing part 32 to move and separate the product to be tested 34 from the magnet 36, the sensor of the displacement component 21 or the testing device 10 is connected to the controller 41, and the sensor is used to collect the peak data generated when the product to be tested 34 is separated from the magnet 36, and transmit the collected peak data to the controller 41. The peak data is actually the data when the tension of the displacement component 21 suddenly changes when the product to be tested 34 is separated from the magnet 36. In response to identifying the tension data of the displacement component 21 when the product to be tested 34 is separated from the magnet 36, the controller 41 uses the tension data as the magnetic attraction data of the product to be tested 34, and displays the tension data on the display 42, so that the user can intuitively perform data analysis on the magnetic attraction data of the product to be tested 34, thereby improving the user's experience.

[0058] The present application also provides a tensile testing machine, which includes a test device 10 and a tensile force output member as described in any of the above embodiments, the tensile force output member is connected to the displacement assembly 21 of the test device 10, and the tensile force output member is used to apply a preset tensile force to the displacement assembly 21 to separate the magnet 36 from the product to be tested 34. The tensile force output member can output the tensile force through a power member such as a motor or a cylinder, which is not specifically limited here.

[0059] Specifically, the tension output member and the displacement assembly 21 of the test device 10 can be connected by screw threads, for example, the tension output member and the displacement assembly 21 are connected by screws and nuts, so that the tensile machine can output the preset tension to the displacement assembly 21. Among them, after the tension output member of this embodiment is connected to the displacement assembly 21, the displacement assembly 21 is located above the base 11, and the displacement assembly 21 can be detachably connected to one of the magnet fixing member 31 and the product fixing member 32, and the base 11 can be detachably connected to the other of the magnet fixing member 31 and the product fixing member 32, so that the user can adjust the setting position of the product to be tested 34 and the magnet 36 according to the actual test requirements, thereby improving the practicality of the test device 10. After the displacement assembly 21 receives the preset tension, it drives the product fixing member 32 or the magnet fixing member 31 to move under the action of the preset tension, so that the magnet 36 is separated from the product to be tested 34, and the magnetic attraction of the product to be tested 34 is measured.

[0060] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A magnetic attraction testing device, characterized in that: include: A magnet fixing member, used for fixing the magnet; A product fixing part, arranged opposite to the magnet fixing part, the product fixing part is used to place the product to be tested, so as to measure the magnetic attraction of the product to be tested when the product to be tested is separated from the magnet; Among them, the product fixing piece is provided with a first groove along the central axis, the first groove is used to accommodate the product to be tested, the product to be tested is provided with at least one positioning hole, and the product fixing piece is also provided with a through hole in the vertical direction of the central axis, and the testing device includes a fixed shaft, the fixed shaft is passed through the through hole and docked with the positioning hole of the product to be tested, so as to fix the product to be tested on the product fixing piece.

2. The testing device according to claim 1, characterized in that: The testing device also includes a base and a displacement assembly, wherein the displacement assembly is disposed above the base, wherein one of the magnet fixing member and the product fixing member is detachably connected to the base, and the other of the magnet fixing member and the product fixing member is detachably connected to the displacement assembly, and wherein the displacement assembly is used to move the magnet fixing member or the product fixing member to separate the product to be tested from the magnet.

3. The testing device according to claim 2, characterized in that: The base is connected to one of the magnet fixing member and the product fixing member through threads, and the displacement assembly is connected to the other of the magnet fixing member and the product fixing member through threads.

4. The testing device according to claim 2, characterized in that: The displacement assembly is used to receive a preset pulling force applied from the outside, and separate the magnet from the product to be tested at a constant speed under the action of the preset pulling force, wherein the preset pulling force ranges from 0 to 5N, and the constant speed is 5mm / min.

5. The testing device according to claim 1, characterized in that: The extending direction of the fixed axis is perpendicular to the central axis of the product to be tested.

6. The testing device according to claim 1 or 5, characterized in that: The product to be tested is provided with a plurality of groups of positioning holes, the plurality of groups of positioning holes are arranged along the central axis of the product to be tested and form a circular array, and each group of positioning holes includes at least one positioning hole; or The product to be tested is provided with three groups of the positioning holes, each group of the positioning holes includes a first positioning hole and a second positioning hole, the first positioning holes and the second positioning holes are respectively distributed at two ends of the product to be tested, and the fixed axis is used to dock with multiple groups of the first positioning holes or multiple groups of the second positioning holes of the product to be tested.

7. The testing device according to claim 1, characterized in that: The testing device also includes a pressing plate, and the magnet fixing part is provided with a second groove along the central axis, the second groove is used to accommodate the magnet, and the pressing plate is movably arranged on a side of the magnet fixing part away from the second groove, and the pressing plate abuts against the magnet to fix the magnet on the magnet fixing part.

8. The testing device according to claim 1, characterized in that: The magnet fixing member is provided with a second groove along the central axis, and the magnet fixing member also includes a first connecting member, which is provided at the bottom of the second groove. A second connecting member is also provided on the side of the magnet facing the second groove, and the first connecting member is clamped with the second connecting member to fix the magnet on the magnet fixing member.

9. The testing device according to claim 1, characterized in that: The magnet fixing part is connected to the magnet via a snap connection, or the magnet fixing part is connected to the magnet via a magnetic connection.

10. A tensile testing machine, characterized in that: It comprises a testing device and a tension output member as described in any one of claims 1 to 9, wherein the tension output member is connected to a displacement component of the testing device, and the tension output member is used to apply a preset tension to the displacement component to separate the magnet and the product to be tested.

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