Device and method for measuring Young modulus of metal wire
By designing a wire Young's modulus measurement device that uses the principle of laser leverage, the problem of difficulty in accurately measuring the wire Young's modulus in the prior art is solved, and efficient and accurate measurement results are achieved.
Patent Information
- Application Number
- CN202510165421.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-06-20
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The prior art is difficult to accurately measure the Young's modulus of metal wires, mainly because the deformation of the metal wire is very small, which makes detection difficult.
A wire Young's modulus measurement device is designed, and the laser lever principle is used to amplify, and the small change of the wire in the vertical direction is converted into a larger change of the measurement scale in the horizontal direction. The driving component drives the measurement scale to move, realize multi-point detection and take an average value to avoid external error interference.
Through laser lever amplification technology, the efficiency and accuracy of the measurement of Young's modulus in metal wire is improved, and the measurement can be carried out more easily and the influence of external errors is effectively avoided.
Smart Images
Figure CN120177175A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of physical measuring devices, and in particular to a metal wire Young's modulus measuring device and a measuring method. Background Art
[0002] Young's modulus is an important parameter in material mechanics. It is used to describe the ability of a material to resist stretching or compression during the elastic deformation stage. It is an indicator to measure the stiffness of a material and reflects the degree of deformation of the material when subjected to force. Young's modulus is widely used in engineering design, material selection and scientific research.
[0003] There are usually several methods for measuring Young's modulus: tensile test, which stretches the material, measures its stress-strain curve, and calculates the Young's modulus; bending test, which is suitable for brittle materials (such as ceramics, glass, etc.), calculates the Young's modulus by measuring the bending deformation of the material; ultrasonic method, which uses the propagation speed of ultrasonic waves in the material to calculate the Young's modulus.
[0004] When measuring the Young's modulus of a metal wire, it is very difficult to detect the deformation of the metal wire because the deformation of the metal wire is very small. This makes it very difficult to measure the Young's modulus of the metal wire and it is difficult to obtain the accurate Young's modulus of the metal wire to be measured through a simple experimental device. Summary of the invention
[0005] In view of this, the purpose of the present invention is to overcome the deficiencies in the prior art and provide a device and method for measuring the Young's modulus of a metal wire. The present application provides the following technical solutions:
[0006] A device for measuring Young's modulus of a metal wire comprises a frame, wherein the frame comprises a support rod, a first mounting portion is arranged on the support rod, a second mounting portion is fixedly arranged on the top of the support rod, a measuring assembly is arranged on the second mounting portion, a first fixing piece is arranged on the second mounting portion, a second fixing piece is arranged on the first mounting portion, a laser generator is arranged on the first mounting portion, an amplifying assembly is arranged on the first mounting portion, a third mounting portion is arranged below the first mounting portion, a load-bearing assembly is arranged between the first mounting portion and the third mounting portion, and a metal wire to be detected is arranged between the first fixing piece and the second fixing piece.
[0007] As an alternative or supplement to the above-mentioned metal wire Young's modulus measuring device, the amplifying component is configured as a triangular mirror, a receiving hole is opened on the first mounting portion, the triangular mirror is arranged in the receiving hole along the length direction of the receiving hole, the side wall of the triangular mirror is rotatably connected to the inner wall of the receiving hole, a mounting groove is opened on an edge of the triangular mirror close to the laser generator, the second fixing part is arranged in the mounting groove, and the second fixing part is rotatably connected to the inner wall of the mounting groove.
[0008] As an alternative or supplement to the above-mentioned device for measuring the Young's modulus of a metal wire, a strip-shaped groove is horizontally formed on the inner sidewall of the accommodation hole, and a mounting shaft is fixedly arranged on the sidewall of the triangular mirror. The diameter of the mounting shaft is adapted to the width of the strip-shaped groove. The end of the mounting shaft away from the triangular mirror is slidably arranged in the strip-shaped groove, and a sliding layer is covered on the outer peripheral wall of the mounting shaft.
[0009] As an alternative or supplement to the above-mentioned device for measuring the Young's modulus of a metal wire, a rotating shaft is fixedly arranged on the sidewall of the second fixing member. The end of the rotating shaft away from the second fixing member is rotatably connected to the inner wall of the mounting groove. A sliding groove is vertically formed on the sidewall of the accommodation hole close to the mounting groove, and a sliding block is slidably arranged in the sliding groove in the vertical direction. The end of the sliding block away from the sliding groove is fixedly connected to the sidewall of the second fixing member.
[0010] As an alternative or supplement to the above-mentioned device for measuring the Young's modulus of a metal wire, the measuring assembly is set as a measuring scale. A guiding groove is horizontally formed at the bottom of the second mounting portion, and a guiding block is slidably arranged in the guiding groove. The measuring scale is arranged below the guiding block. A driving assembly is arranged on the second mounting portion, and the driving assembly is used to drive the guiding block to move in the guiding groove.
[0011] As an alternative or supplement to the above-mentioned device for measuring the Young's modulus of a metal wire, the driving assembly includes a driving shaft and a lead screw. The driving shaft is rotatably arranged on the sidewall of the second mounting portion, the lead screw is rotatably arranged in the guiding groove along the length direction of the sliding groove, the driving shaft is in transmission connection with the lead screw, the guiding block is threadedly sleeved on the lead screw, a knob is coaxially and fixedly arranged at the end of the driving shaft away from the lead screw, the diameter of the knob is larger than that of the driving shaft, and anti-slip stripes are fixedly arranged on the peripheral wall of the knob.
[0012] As an alternative or supplement to the above-mentioned device for measuring the Young's modulus of a metal wire, a connecting block is fixedly arranged below the guiding block, a slot is formed at the bottom of the connecting block, one end of the slot is open, a plug block is slidably arranged in the slot, the bottom of the plug block is fixedly connected to the top of the measuring scale, and a limiting member is arranged on the connecting block, and the limiting member is used to limit the position of the plug block in the slot.
[0013] As an alternative or supplement to the above-mentioned device for measuring the Young's modulus of a metal wire, the limiting member is set as a limiting pin. A mounting hole is formed on the sidewall of the connecting block, the limiting member slidably penetrates through the mounting hole, the mounting hole is communicated with the slot, a limiting hole for inserting the limiting member is formed on the sidewall of the plug block, and an elastic member is arranged on the connecting block, and the elastic member is used to drive the limiting member to move towards the inside of the slot.
[0014] As an alternative or supplement to the above-mentioned wire Young's modulus measuring device, a key is fixedly arranged on the limiting member along the length direction of the limiting member, and a slot for the key to be inserted is formed on the side wall of the connecting block. The slot communicates with the mounting hole. The length of the key is longer than the depth of the limiting hole. The elastic member is arranged as a tension spring. A boss is coaxially and fixedly arranged at one end of the limiting member away from the connecting block. The diameter of the boss is larger than that of the limiting member. The elastic member is sleeved on the limiting member. One end of the elastic member is fixedly connected to the side wall of the connecting block, and the other end is fixedly connected to the boss
[0015] On the other hand, the present invention also provides a method for measuring the Young's modulus of a wire, which adopts the following technical solutions:
[0016] A method for measuring the Young's modulus of a wire includes measuring with a wire Young's modulus measuring device, and further includes the following steps:
[0017] S1. Connect the two ends of the wire to be measured to the first fixing member and the second fixing member respectively to fix the wire to be measured;
[0018] S2. Turn on the laser generator, adjust the position of the measuring assembly so that the cross laser scale is at the center position of the measuring scale, and complete the zero calibration of the device before measurement;
[0019] S3. Hang a weight of a fixed mass on the load-bearing assembly to stretch the wire to be measured;
[0020] S4. Obtain the displacement Δx of the cross laser scale by observing the measuring scale, record the original length L of the wire, record the optical grid distance Y of the laser path, record the original diameter d of the wire, record the magnitude of the force of the load-bearing assembly as F, and record the horizontal perpendicular length H of the triangular ruler. Then the Young's modulus E of the wire to be measured can be calculated.
[0021] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:
[0022] In the actual measurement process of the present invention, through the principle of laser lever for amplification, the small change amount of the wire in the vertical direction is converted into a large change amount in the horizontal direction of the measuring scale, so that the Young's modulus of the wire can be measured more conveniently, effectively improving the measurement efficiency, and at the same time, effectively improving the accuracy of the measurement of the Young's modulus of the wire; at the same time, in the actual use process, the driving assembly drives the guiding block to move in the guiding groove, so as to drive the measuring scale to move in the horizontal direction, and the laser cross scale can be detected at different positions, which can further improve the detection accuracy. The method of taking the average value by multi-point detection can effectively avoid the interference of external errors and further improve the accuracy of the measurement of the Young's modulus of the wire.
[0023] To make the above objects, features, and advantages of the present application more obvious and understandable, the following provides preferred embodiments in conjunction with the accompanying drawings and makes a detailed description as follows. Description of the Drawings
[0024] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative efforts.
[0025] Figure 1 is a schematic diagram of the overall structure of the present invention.
[0026] Figure 2 is a partial cross-sectional view of the first installation part of the present invention.
[0027] Figure 3 is a schematic diagram of the structure of the installation groove of the present invention;
[0028] Figure 4 is Figure 3 the enlarged view at A in
[0029] Figure 5 is a schematic diagram of the structure of the second installation part of the present invention;
[0030] Figure 6 is a schematic diagram of the structure of the drive assembly of the present invention;
[0031] Figure 7 is Figure 6 the enlarged view at B in
[0032] Figure 8 is a cross-sectional schematic diagram of the enlarged assembly of the present invention.
[0033] Reference numerals: 1 - frame body; 11 - support rod; 12 - first installation part; 13 - second installation part; 14 - first fixing member; 15 - second fixing member; 16 - laser generator; 17 - third installation part; 18 - load-bearing assembly; 19 - force sensor; 2 - measurement assembly; 3 - enlarged assembly; 31 - receiving hole; 32 - installation groove; 33 - strip-shaped groove; 34 - installation shaft; 35 - rotating shaft; 36 - sliding groove; 37 - sliding block; 4 - guiding groove; 41 - guiding block; 5 - drive assembly; 51 - drive shaft; 52 - lead screw; 53 - knob; 54 - anti-slip stripes; 6 - connecting block; 61 - slot; 62 - plug; 63 - limiting member; 64 - installation hole; 65 - limiting hole; 66 - elastic member; 67 - key; 68 - key slot; 69 - boss. Detailed Embodiments
[0034] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.
[0035] In the present application, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0036] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature.
[0037] Please refer to Figure 1-8 As shown, a device for measuring the Young's modulus of a metal wire provided in this embodiment includes a frame 1. The frame 1 includes support rods 11. There are two support rods 11. A first mounting portion 12 is provided on the support rods 11. A second mounting portion 13 is fixedly provided at the top of the support rods 11. A measuring assembly 2 (as Figure 5 shown) is provided on the second mounting portion 13. A first fixing member 14 (as Figure 5 shown) is provided on the second mounting portion 13. A second fixing member 15 (as Figure 4 shown) is provided on the first mounting portion 12. A laser generator 16 is provided on the first mounting portion 12. An amplifying assembly 3 is provided on the first mounting portion 12. A third mounting portion 17 is provided below the first mounting portion 12. A load-bearing assembly 18 is provided between the first mounting portion 12 and the third mounting portion 17. A metal wire to be detected is provided between the first fixing member 14 and the second fixing member 15.
[0038] In the above embodiment, the load-bearing assembly 18 is set as a spring dynamometer, and a force sensor 19 is provided on one side of the load-bearing assembly 18, which can more intuitively observe the weight of the weights installed at the bottom of the load-bearing assembly 18.
[0039] Among them, as Figure 2 and Figure 3 show, the magnifying component 3 is set as a triangular mirror. A receiving hole 31 is formed in the first mounting portion 12. The triangular mirror is arranged in the receiving hole 31 along the length direction of the receiving hole 31. The side wall of the triangular mirror is rotatably connected to the inner wall of the receiving hole 31. An installation groove 32 is formed on an edge of the triangular mirror close to the laser generator 16. The second fixing member 15 is arranged in the installation groove 32, and the second fixing member 15 is rotatably connected to the inner wall of the installation groove 32.
[0040] As Figure 2 shows, strip-shaped grooves 33 are formed in the inner side wall of the receiving hole 31 in the horizontal direction. There are two strip-shaped grooves 33, and the two strip-shaped grooves 33 are respectively arranged on the inner walls on both sides of the receiving hole 31. Mounting shafts 34 are fixedly arranged on the side wall of the triangular mirror. There are also two corresponding mounting shafts 34. The diameter of the mounting shaft 34 is adapted to the width of the strip-shaped groove 33. One end of the mounting shaft 34 away from the triangular mirror is slidably arranged in the strip-shaped groove 33. A sliding layer is covered on the outer peripheral wall of the mounting shaft 34.
[0041] As Figure 3 and Figure 4 show, a rotating shaft 35 is fixedly arranged on the side wall of the second fixing member 15. One end of the rotating shaft 35 away from the second fixing member 15 is rotatably connected to the inner wall of the installation groove 32. A sliding groove 36 is formed in the side wall of the receiving hole 31 close to the installation groove 32 in the vertical direction. A sliding block 37 is slidably arranged in the sliding groove 36 in the vertical direction. One end of the sliding block 37 away from the sliding groove 36 is fixedly connected to the side wall of the second fixing member 15.
[0042] In the actual measurement process, magnification is carried out through the principle of the laser lever. A relatively small change amount of the wire in the vertical direction is converted into a relatively large change amount of the measuring scale in the horizontal direction, so that the Young's modulus of the wire can be measured more conveniently, effectively improving the measurement efficiency, and at the same time, effectively improving the accuracy of the measurement of the Young's modulus of the wire.
[0043] Among them, as Figure 5 and Figure 6 show, the measuring component 2 is set as a measuring scale. A guiding groove 4 is formed in the bottom of the second mounting portion 13 in the horizontal direction. A guiding block 41 is slidably arranged in the guiding groove 4. The measuring scale is arranged below the guiding block 41. A driving component 5 is arranged on the second mounting portion 13. The driving component 5 is used to drive the guiding block 41 to move in the guiding groove 4.
[0044] As an alternative solution to the above embodiment, the driving assembly 5 includes a driving shaft 51 and a lead screw 52. The driving shaft 51 is rotatably arranged on the side wall of the second mounting portion 13, and the lead screw 52 is rotatably arranged in the guiding groove 4 along the length direction of the sliding groove. The driving shaft 51 is in transmission connection with the lead screw 52. The guiding block 41 is threadedly sleeved on the lead screw 52. A knob 53 is coaxially and fixedly arranged at one end of the driving shaft 51 away from the lead screw 52. The diameter of the knob 53 is larger than that of the driving shaft 51, and anti-slip stripes 54 are fixedly arranged on the peripheral wall of the knob 53.
[0045] During the actual use process, the driving assembly 5 drives the guiding block 41 to move in the guiding groove 4, so as to drive the measuring ruler to move in the horizontal direction, be able to detect the laser cross ruler at different positions, and further improve the detection accuracy. The method of taking the average value by multi-point detection can effectively avoid the interference of external errors and further improve the measurement accuracy of the Young's modulus of the metal wire.
[0046] As shown in Figure 6 and Figure 7 A connecting block 6 is fixedly arranged below the guiding block 41. A slot 61 is opened at the bottom of the connecting block 6. One end of the slot 61 is open. An inserting block 62 is slidably arranged in the slot 61. The bottom of the inserting block 62 is fixedly connected to the top of the measuring ruler. A limiting member 63 is arranged on the connecting block 6, and the limiting member 63 is used to limit the position of the inserting block 62 in the slot 61.
[0047] As an alternative solution to the above embodiment, as shown in Figure 6 the guiding groove 4 is formed as a T-shaped groove, and the guiding block 41 is arranged as a T-shaped block adapted to the guiding groove 4; as another possible implementation manner of the present invention, the guiding groove 4 can also be arranged as a dovetail groove, and the guiding block 41 is arranged as a dovetail block adapted to the guiding groove 4.
[0048] In another possible embodiment, as shown in Figure 7 the limiting member 63 is arranged as a limiting pin. An installation hole 64 is opened on the side wall of the connecting block 6. The limiting member 63 slidably penetrates through the installation hole 64. The installation hole 64 is communicated with the slot 61. A limiting hole 65 for inserting the limiting member 63 is opened on the side wall of the inserting block 62. An elastic member 66 is arranged on the connecting block 6, and the elastic member 66 is used to drive the limiting member 63 to move towards the inside of the slot 61.
[0049] During the actual use process, replacing the measuring ruler with different scales according to metal wires of different materials can effectively improve the applicable range of the device during the actual use process and further improve the practicability of the device.
[0050] As shown in Figure 7As shown in the figure, a key 67 is fixedly arranged on the limiting member 63 along the length direction of the limiting member 63. A clamping groove 68 for the key 67 to be clamped into is formed on the side wall of the connecting block 6. The clamping groove 68 is communicated with the mounting hole 64. The length of the key 67 is longer than the hole depth of the limiting hole 65. The elastic member 66 is arranged as a tension spring. A boss 69 is coaxially and fixedly arranged at one end of the limiting member 63 away from the connecting block 6. The diameter of the boss 69 is larger than that of the limiting member 63. The elastic member 66 is sleeved on the limiting member 63. One end of the elastic member 66 is fixedly connected with the side wall of the connecting block 6, and the other end is fixedly connected with the boss 69.
[0051] During the process of replacing the measuring ruler, the limiting member 63 is pulled to make the key 67 disengage from the clamping groove 68, and then the limiting member 63 is rotated to make the end of the key 67 abut against the side wall of the connecting block 6. At this time, the end of the limiting member 63 will not fall into the slot 61 under the action of the key 67. At this time, the measuring ruler can be conveniently replaced, and the operation is simpler and more convenient, with better practicability.
[0052] Therefore, in the actual use process of the present invention, different measuring rulers with different scales are replaced according to metal wires of different materials, which can effectively improve the applicable range of the device in the actual use process and further improve the practicability of the device; at the same time, during the process of replacing the measuring ruler, the limiting member 63 is pulled to make the key 67 disengage from the clamping groove 68, and then the limiting member 63 is rotated to make the end of the key 67 abut against the side wall of the connecting block 6. At this time, the end of the limiting member 63 will not fall into the slot under the action of the key 67. At this time, the measuring ruler can be conveniently replaced, and the operation is simpler and more convenient, with better practicability.
[0053] On the other hand, the present invention provides a method for measuring the Young's modulus of a metal wire.
[0054] A method for measuring the Young's modulus of a metal wire, which is measured by using the above-mentioned device for measuring the Young's modulus of a metal wire, includes the following steps:
[0055] S1, connect the two ends of the metal wire to be measured with the first fixing member and the second fixing member respectively to fix the metal wire to be measured;
[0056] S2, turn on the laser generator, adjust the position of the measuring assembly to make the cross laser scale at the center position of the measuring ruler, and complete the zero calibration of the device before measurement;
[0057] S3, hang a fixed mass of weights on the load-bearing assembly to stretch the metal wire to be measured;
[0058] In S4, the displacement of the cross laser scale is obtained as Δx by observing the measuring scale. Record the original length of the metal wire as L, the optical grid distance of the laser path as Y, the original diameter of the metal wire as d, the magnitude of the force of the load-bearing component as F, and the horizontal perpendicular length of the triangular ruler as H. Then, the Young's modulus E of the metal wire to be measured can be calculated.
[0059] As Figure 8 shown, point c of the triangular mirror is as shown in the figure. The second fixing member is arranged at point c, and the perpendicular length of point c is the horizontal perpendicular length H.
[0060] In the actual use process, the laser generator emits laser light. The light reflected by the triangular mirror forms an angle with the horizontal direction. The scale on the measuring scale is x1. When the metal wire is stressed, it produces a small elongation Δl. Point c of the triangular mirror drops, thereby driving the reflecting mirror to rotate by a corresponding angle θ. According to the law of reflection of light, when the incident light remains unchanged, the outgoing light rotates by 2θ. At this time, the scale on the ruler can be seen as x2.
[0061] Since H >> Δl during the detection process, θ and even 2θ will be very small. Therefore, when 2θ is very small, there is: l ≈ H·θ, Δx ≈ Y·2θ.
[0062] Therefore, it can be obtained that:
[0063] Among them, 2Y / H is called the magnification of the laser optical lever, and Y is the vertical distance between the center of the reflecting mirror and the scale. In the instrument, Y >> H. In this way, a small displacement Δl can be magnified into a larger and easily measurable displacement Δx.
[0064] Thus, it can be obtained that
[0065] L represents the original length of the steel wire, d represents the diameter of the steel wire (measured with a micrometer); F represents the gravity of each additional weight (read directly from the tensiometer); represents the increment of the reading on the top ruler for each additional tensile force of F.
[0066] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations to the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.
Claims
1. A device for measuring Young's modulus of a metal wire, characterized in that: The invention comprises a frame, wherein the frame comprises a support rod, a first mounting portion is arranged on the support rod, a second mounting portion is fixedly arranged on the top of the support rod, a measuring assembly is arranged on the second mounting portion, a first fixing piece is arranged on the second mounting portion, a second fixing piece is arranged on the first mounting portion, a laser generator is arranged on the first mounting portion, an amplifying assembly is arranged on the first mounting portion, a third mounting portion is arranged below the first mounting portion, a load-bearing assembly is arranged between the first mounting portion and the third mounting portion, and a metal wire to be detected is arranged between the first fixing piece and the second fixing piece.
2. A metal wire Young's modulus measuring device according to claim 1, characterized in that: The amplifying component is configured as a triangular mirror, a receiving hole is provided on the first mounting portion, the triangular mirror is arranged in the receiving hole along the length direction of the receiving hole, the side wall of the triangular mirror is rotatably connected to the inner wall of the receiving hole, a mounting groove is provided on an edge of the triangular mirror close to the laser generator, the second fixing part is arranged in the mounting groove, and the second fixing part is rotatably connected to the inner wall of the mounting groove.
3. A metal wire Young's modulus measuring device according to claim 2, characterized in that: A strip groove is opened in the horizontal direction on the inner wall of the accommodating hole, and a mounting shaft is fixedly arranged on the side wall of the triangular mirror. The diameter of the mounting shaft is matched with the width of the strip groove. The end of the mounting shaft away from the triangular mirror is slidably arranged in the strip groove, and a sliding layer is covered on the outer peripheral wall of the mounting shaft.
4. A metal wire Young's modulus measuring device according to claim 3, characterized in that: A rotating shaft is fixedly arranged on the side wall of the second fixing member, and one end of the rotating shaft away from the second fixing member is rotatably connected to the inner wall of the mounting groove, and a sliding groove is opened in the vertical direction on the side wall of the accommodating hole close to the mounting groove, and a sliding block is slidably arranged in the vertical direction in the sliding groove, and one end of the sliding block away from the sliding groove is fixedly connected to the side wall of the second fixing member.
5. A metal wire Young's modulus measuring device according to claim 1, characterized in that: The measuring component is configured as a measuring ruler, a guide groove is provided in the horizontal direction at the bottom of the second mounting portion, a guide block is slidably provided in the guide groove, the measuring ruler is provided below the guide block, and a driving component is provided on the second mounting portion, the driving component is used to drive the guide block to move in the guide groove.
6. A metal wire Young's modulus measuring device according to claim 5, characterized in that: The driving assembly includes a driving shaft and a screw, the driving shaft is rotatably arranged on the side wall of the second mounting portion, the screw is rotatably arranged in the guide groove along the length direction of the slide groove, the driving shaft is transmission-connected to the screw, the guide block is threadedly sleeved on the screw, a knob is coaxially fixedly arranged at the end of the driving shaft away from the screw, the diameter of the knob is larger than the driving shaft, and anti-slip stripes are fixedly arranged on the peripheral wall of the knob.
7. A metal wire Young's modulus measuring device according to claim 5, characterized in that: A connecting block is fixedly arranged below the guide block, a slot is provided at the bottom of the connecting block, one end of the slot is open, an insert block is slidably arranged in the slot, the bottom of the insert block is fixedly connected to the top of the measuring ruler, a limiting member is arranged on the connecting block, and the limiting member is used to limit the position of the insert block in the slot.
8. A metal wire Young's modulus measuring device according to claim 7, characterized in that: The limiting member is configured as a limiting pin, and a mounting hole is provided on the side wall of the connecting block. The limiting member is slidably inserted into the mounting hole. The mounting hole is communicated with the slot. A limiting hole for inserting the limiting member is provided on the side wall of the insert block. An elastic member is provided on the connecting block, and the elastic member is used to drive the limiting member to move toward the slot.
9. A device for measuring Young's modulus of a metal wire according to claim 8, characterized in that: A key is fixedly provided on the limit member along the length direction of the limit member, and a slot for the key to be inserted is opened on the side wall of the connecting block, the slot is connected to the mounting hole, the length of the key is longer than the hole depth of the limit hole, the elastic member is configured as a tension spring, and a boss is coaxially fixedly provided at one end of the limit member away from the connecting block, the diameter of the boss is larger than the limit member, the elastic member is sleeved on the limit member, one end of the elastic member is fixedly connected to the side wall of the connecting block, and the other end is fixedly connected to the boss.
10. A method for measuring Young's modulus of a metal wire, characterized in that: A device for measuring Young's modulus of a metal wire according to any one of claims 1 to 9, further comprising the following steps: S1, connecting two ends of the metal wire to be measured to a first fixing member and a second fixing member respectively to fix the metal wire to be measured; S2, turn on the laser generator, adjust the position of the measuring component, make the cross laser ruler and the center of the measuring ruler, and complete the zero calibration of the device before measurement; S3, hanging a weight of fixed mass to the load-bearing component to stretch the metal wire to be measured; S4, by observing the measuring ruler, the displacement of the cross laser ruler is Δx, the original length of the metal wire is recorded as L, the light grid distance of the laser path is recorded as Y, the original diameter of the metal wire is recorded as d, the force of the load-bearing component is recorded as F, and the length of the horizontal vertical line of the triangle ruler is recorded as H, then the Young's modulus E of the metal wire to be measured can be calculated.