Titanium wire elasticity automatic detection equipment

Abstract

The invention provides titanium wire elasticity automatic detection equipment, and relates to the technical field of elasticity test equipment, the titanium wire elasticity automatic detection equipment comprises an operation table, the top surface of the operation table is rotatably provided with a first stretching rod and a second stretching rod, and the first stretching rod and the second stretching rod are symmetrically arranged relative to the operation table. According to the titanium wire elasticity automatic detection equipment provided by the invention, through the arrangement of the operation table, the first stretching rod, the second stretching rod, the driving mechanism, the first mounting block, the second mounting block, the clamp, the end part positioning structure and the positioning stretching mechanism, when the titanium wire elasticity detection is carried out, the titanium wire can be firstly pulled to a horizontal state; the two clamps are used for clamping and fixing the two ends of the titanium wire, so that the length of the titanium wire between the two clamps is ensured, the clamping positions of the titanium wire and the clamps can also be ensured, the situation that the titanium wire is bent after being clamped is reduced, the influence on the elasticity testing result of the titanium wire is reduced, the titanium wire is subjected to bending testing, automatic detection is achieved, and the working efficiency is improved. Operation is simple and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of elasticity testing equipment, and in particular to an automatic elasticity detection equipment for titanium wires. Background Art

[0002] Titanium has a low elastic modulus of about 106.4 GPa at room temperature, which is only 57% of that of steel. This property enables titanium wire to have good elastic deformation ability when subjected to external force, and is suitable for components that require high elasticity, such as springs, orthotics, etc. In order to better evaluate the basic mechanical properties of titanium wire and ensure the reliability of titanium wire in practical applications, it is necessary to perform elastic testing on titanium wire, thereby guiding the research and development and improvement of titanium wire, controlling the quality of titanium wire, and evaluating the durability and service life of the material.

[0003] When conducting elasticity tests on titanium wires, bending, stretching and other tests are usually required. Most of the time, two instruments are used to perform bending and stretching tests on the titanium wires respectively. When conducting stretching tests, two clamps are used to clamp and fix the two ends of the titanium wire respectively, and then one clamp is slid to record various data of the titanium wire during the test (such as maximum tensile force, yield point load, elongation at fracture, etc.). However, in actual situations, in order to ensure the accuracy of titanium wire test data, it is necessary to cut multiple specimens that meet standard size requirements from the same batch of titanium wires. However, during the clamping process, it is impossible to accurately ensure that the length and clamping position of the titanium wires between the two clamps are consistent, which will affect the test results. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes an automatic detection device for the elasticity of titanium wire.

[0005] The present invention provides an automatic testing device for elasticity of titanium wire, comprising an operating table, a top surface of which is rotatably mounted with a No. 1 stretching rod and a No. 2 stretching rod, the No. 1 stretching rod and the No. 2 stretching rod being symmetrically arranged with respect to the operating table, and a driving mechanism being mounted on the operating table, the driving mechanism being capable of synchronously driving the No. 1 stretching rod and the No. 2 stretching rod to rotate on the operating table, and the rotation directions of the No. 1 stretching rod and the No. 2 stretching rod are opposite; The first stretching rod is rotatably mounted with a first mounting block, the second stretching rod is rotatably mounted with a second mounting block, and both the first mounting block and the second mounting block are mounted with a clamp; The No. 1 mounting block is equipped with an end positioning structure, which is used to fix one end of the titanium wire. The No. 2 mounting block is equipped with a positioning and stretching mechanism, which is used to straighten the titanium wire and fix the other end of the titanium wire. Both clamps are located between the end positioning structure and the positioning and stretching mechanism.

[0006] Preferably, the end positioning structure includes a positioning cone, an elastic clamp block and a threaded extrusion cylinder; the positioning cone is fixedly mounted on mounting block No. 1, and the positioning cone is arranged in parallel with mounting block No. 1, there are multiple elastic clamp blocks, and the multiple elastic clamp blocks are arranged in a circular array at the end of the positioning cone, the threaded extrusion cylinder is threadedly mounted on the positioning cone, and the threaded extrusion cylinder can extrude multiple elastic clamp blocks to move together.

[0007] Preferably, the positioning and stretching mechanism comprises a driving roller, an auxiliary roller, a stretching motor, an adjustment component and a positioning component; the driving roller and the auxiliary roller are both rotatably mounted on the second mounting block, the driving roller and the auxiliary roller are arranged parallel to each other, the stretching motor is mounted in the second mounting block, and the output shaft of the stretching motor is fixedly connected to the driving roller; The adjustment assembly is used to adjust the distance between the auxiliary roller and the driving roller; The positioning assembly is used to fix the position of the auxiliary roller on the second mounting block.

[0008] Preferably, the adjustment assembly includes a driving shaft seat; the driving shaft seat is slidably mounted on the second mounting block, and the auxiliary roller is rotatably sleeved on the driving shaft seat.

[0009] Preferably, the positioning assembly includes a positioning pin, a positioning spring and a pressing rod; a receiving hole is provided on the second mounting block, the positioning pin is slidably installed in the receiving hole, the positioning spring is located in the receiving hole, the two ends of the positioning spring are respectively against the inner wall of the end of the receiving hole and the end of the positioning pin, and a positioning hole adapted to the positioning pin is provided at the bottom of the active shaft seat; The pressing rod slides through the active shaft seat, and the pressing rod can push the positioning pin out of the positioning hole. A boss is circumferentially arranged on the outer circumference of the pressing rod. A limiting groove that slides with the boss is provided in the active shaft seat. A return spring is provided in the limiting groove. Both ends of the return spring can abut against the end inner wall and the boss of the limiting groove.

[0010] Preferably, a guide mechanism is installed on the operating table, and when the No. 1 stretching rod and the No. 2 stretching rod rotate toward each other, the guide mechanism can drive the No. 1 mounting block and the No. 2 mounting block to rotate away from each other.

[0011] Preferably, the guide mechanism comprises a No. 1 guide gear, a No. 2 guide gear and a guide tooth plate; the No. 1 mounting block is rotatably mounted on the No. 1 stretching rod via a No. 1 rotating shaft, and the No. 1 guide gear is fixedly connected to the No. 1 rotating shaft of the No. 1 mounting block; The second mounting block is rotatably mounted on the second stretching rod via the second rotating shaft, and the second guide gear is fixedly connected to the second rotating shaft; The guide tooth plate is fixedly mounted on the operating table, and the first guide gear and the second guide gear are both meshed with the guide tooth plate.

[0012] Preferably, the driving mechanism includes a No. 1 gear, a No. 2 gear and a driving motor; the No. 1 gear is fixedly connected to the end of the No. 1 stretching rod, the No. 1 gear is rotatably mounted on the operating table, the No. 2 gear is fixedly connected to the end of the No. 2 stretching rod, the No. 2 gear is rotatably mounted on the operating table, the No. 1 gear is meshed with the No. 2 gear, the driving motor is fixedly mounted in the operating table, and the output shaft of the driving motor is fixedly connected to the No. 1 gear.

[0013] Preferably, a protective cover is installed on the operating table, and the protective cover covers the outside of the first gear and the second gear.

[0014] Preferably, the clamp comprises two clamping blocks; both of the two clamping blocks are slidably mounted on mounting block No. 1.

[0015] The titanium wire elasticity automatic detection device proposed by the present invention has the following beneficial effects: through the set operating table, No. 1 stretching rod, No. 2 stretching rod, driving mechanism, No. 1 mounting block, No. 2 mounting block, clamp, end positioning structure and positioning stretching mechanism, when performing elasticity detection of the titanium wire, the titanium wire can be first pulled to a horizontal state, and then the two ends of the titanium wire are clamped and fixed by two clamps, thereby ensuring the length of the titanium wire between the two clamps, and also ensuring the clamping position of the titanium wire and the clamp, reducing the bending of the titanium wire after being clamped, reducing the impact on the elasticity test result of the titanium wire, and can also perform bending test on the titanium wire, which can realize automatic detection and is simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an automatic testing device for titanium wire elasticity proposed by the present invention; Figure 2 A top view of a titanium wire elasticity automatic detection device proposed by the present invention with the protective cover removed; Figure 3 This is a schematic diagram of the structure of a titanium wire elasticity automatic detection device proposed by the present invention without the No. 1 mounting block, the No. 2 mounting block and the protective cover; Figure 4 A top view of a titanium wire elasticity automatic detection device proposed by the present invention with a No. 1 mounting block, a No. 2 mounting block and a protective cover removed; Figure 5 A titanium wire elasticity automatic detection device proposed by the present invention Figure 1 Enlarged view of point A in the middle; Figure 6 A titanium wire elasticity automatic detection device proposed by the present invention Figure 1Enlarged view of point B in the middle; Figure 7 A cross-sectional view of an end positioning structure in an automatic detection device for elasticity of titanium wires proposed by the present invention; Figure 8 The present invention provides a cross-sectional view of a positioning and stretching mechanism in an automatic titanium wire elasticity detection device.

[0017] In the figure: 1. operating table; 2. stretching rod No. 1; 3. stretching rod No. 2; 4. mounting block No. 1; 5. mounting block No. 2; 6. positioning cone; 7. elastic clamping block; 8. threaded extrusion cylinder; 9. driving roller; 10. auxiliary roller; 11. stretching motor; 12. driving shaft seat; 13. positioning pin; 14. positioning spring; 15. pressing rod; 16. reset spring; 17. guide gear No. 1; 18. guide gear No. 2; 19. guide gear plate; 20. gear No. 1; 21. gear No. 2; 22. protective cover; 23. clamping block. DETAILED DESCRIPTION

[0018] Reference Figure 1-Figure 8The present invention proposes an automatic testing device for elasticity of titanium wire, comprising an operating table 1, a No. 1 stretching rod 2 and a No. 2 stretching rod 3 are rotatably installed on the top surface of the operating table 1, the No. 1 stretching rod 2 and the No. 2 stretching rod 3 are symmetrically arranged about the operating table 1, a driving mechanism is installed on the operating table 1, the driving mechanism can synchronously drive the No. 1 stretching rod 2 and the No. 2 stretching rod 3 to rotate on the operating table 1, and the rotation directions of the No. 1 stretching rod 2 and the No. 2 stretching rod 3 are opposite, the No. 1 stretching rod 2 and the No. 2 stretching rod 3 can move away from or close to each other, a No. 1 mounting block 4 is rotatably installed on the No. 1 stretching rod 2, and a No. 2 stretching rod 3 is rotatably installed with two mounting blocks. The first mounting block 5, the second mounting block 5 and the second mounting block 5 are both equipped with a clamp, which includes two clamps 23; the two clamps 23 are both slidably mounted on the first mounting block 4, and the clamps 23 are driven by an electric slide rail or an existing driving mechanism such as a cylinder or a hydraulic cylinder, which can ensure the firmness of the clamping of the two ends of the titanium wire, and at the same time control the clamping force to reduce the situation where the titanium wire is damaged by excessive clamping. After the two clamps clamp the titanium wire, when the first stretching rod 2 and the second stretching rod 3 move away from each other, the titanium wire is subjected to a tensile test. At the same time, since the first mounting block 4 and the second mounting block 5 are respectively mounted on one side by rotation, The No. 1 stretching rod 2 and the No. 2 stretching rod 3 keep the titanium wire and the fixture in a straight line at all times, reducing the bending of the titanium wire and the clamping position that affects the test results. The two clamps move away from each other at the same speed at the same time. At this time, the tension on the titanium wire comes from two directions, and the magnitude is equal and the direction is opposite. This can make the stress distribution of the titanium wire more uniform along the entire length direction (in contrast, when moving on one side, the tension is only applied from one side, which may cause local stress concentration on the titanium wire and affect the accuracy of the test results). Uniform force helps to reduce the local deformation of the titanium wire at the clamping position. When the two clamps are moved at the same time, the tension on the titanium wire comes from two directions, and the magnitude is equal and the direction is opposite. This can make the stress distribution of the titanium wire more uniform along the entire length direction. When moving, the clamping force on the clamping part of the titanium wire is more balanced, and local plastic deformation or damage caused by excessive clamping force on one side is less likely to occur, thereby better protecting the integrity of the titanium wire. Finally, the driving mechanism drives the titanium wire to be stretched to achieve automatic detection (in the tensile test, a high-precision stress sensor can be installed between the fixture and the titanium wire. When tension is applied to the titanium wire, the stress sensor will directly measure the force acting on the titanium wire and convert it into an electrical signal output. Through real-time monitoring and analysis of the output signal of the stress sensor, the stress change curve of the titanium wire with time or displacement during the stretching process can be obtained).

[0019] In actual situations, when clamping titanium wire, a clamp is usually used to clamp and fix both ends of the titanium wire, but it is impossible to ensure that the length of the titanium wire between the two clamps remains consistent, which will lead to inaccurate test results (the titanium wire is shorter and the distance between the clamps is smaller, the bending degree of the titanium wire in the clamp will increase, resulting in stress concentration; stress concentration will cause the titanium wire to bear greater stress in the area near the clamp, thereby affecting the accuracy of the test results; in contrast, the longer titanium wire has a smaller bending degree between the clamps and the stress distribution is more uniform). At the same time, the clamping positions of the titanium wire and the clamp may be different, resulting in a bend between the titanium wire and the titanium wire clamped by the clamp during the tensile test, resulting in local stress concentration of the titanium wire, and the stress at the bent part will be significantly higher than that at other parts, making the titanium wire more prone to deformation and fracture at these parts, thereby affecting the accuracy of the test results; therefore, the following design is proposed.

[0020] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown in the figure, an end positioning structure is installed on the No. 1 mounting block 4, and the end positioning structure is used to fix one end of the titanium wire. A positioning and stretching mechanism is installed on the No. 2 mounting block 5, and the positioning and stretching mechanism is used to straighten the titanium wire and fix the other end of the titanium wire. Both clamps are located between the end positioning structure and the positioning and stretching mechanism. Before the titanium wire is clamped and fixed, one end of the titanium wire is fixed by the end positioning structure, and the other end is straightened and positioned by the positioning and stretching mechanism, so that the titanium wire remains in a horizontal and straight state (at this time, the two clamps 23 in the same clamp are symmetrically arranged about the titanium wire, and the straightened titanium wire is located between the gaps of the two clamps), and then the straightened titanium wire is clamped by the two clamps, thereby ensuring the length of the titanium wire between the two clamps. In addition, the straightening force of the titanium wire groove can be controlled, thereby ensuring the initial tensile force of the titanium wire and reducing the factors affecting the test results.

[0021] like Figure 1 , Figure 2 , Figure 5 and Figure 7As shown in the figure, the end positioning structure includes a positioning cone 6, an elastic clamp block 7 and a threaded extrusion cylinder 8; the positioning cone 6 is fixedly installed on the No. 1 mounting block 4, and the positioning cone 6 is arranged in parallel with the No. 1 mounting block 4. There are multiple elastic clamp blocks 7, and the multiple elastic clamp blocks 7 are arranged in a ring array at the end of the positioning cone 6. The threaded extrusion cylinder 8 is threadedly mounted on the positioning cone 6, and the threaded extrusion cylinder 8 can extrude multiple elastic clamp blocks 7 to move together. The height of the positioning cone 6 on the No. 1 mounting block 4 remains unchanged. The conical hole opened on the positioning cone 6 is used for the end of the titanium wire to be inserted from the large-diameter end, which facilitates the insertion of the titanium wire. After the titanium wire passes through the positioning cone 6, the threaded extrusion cylinder 8 is rotated so that the threaded extrusion cylinder 8 extrude the elastic clamp block 7, and the end of the titanium wire is clamped and fixed by multiple elastic clamp blocks 7, thereby positioning the end of the titanium wire.

[0022] like Figure 1 , Figure 2 , Figure 6 and Figure 8 As shown in the figure, the positioning and stretching mechanism includes a driving roller 9, an auxiliary roller 10, a stretching motor 11, an adjusting component and a positioning component; the driving roller 9 and the auxiliary roller 10 are both rotatably mounted on the No. 2 mounting block 5, the driving roller 9 and the auxiliary roller 10 are arranged parallel to each other, the stretching motor 11 is mounted in the No. 2 mounting block 5, the output shaft of the stretching motor 11 is fixedly connected to the driving roller 9, the adjusting component is used to adjust the distance between the auxiliary roller 10 and the driving roller 9, the positioning component is used to fix the position of the auxiliary roller 10 on the No. 2 mounting block 5, when fixing the position of the other end of the titanium wire, first adjust the distance between the auxiliary roller 10 and the driving roller 9 by the adjusting component, and then move the titanium wire The other end is placed in the gap between the driving roller 9 and the auxiliary roller 10. The outer peripheries of the driving roller 9 and the auxiliary roller 10 are provided with friction rings. The titanium wire is placed at the position of the friction ring (a ring groove can be opened instead to better limit the positioning of the titanium wire). The auxiliary roller 10 is adjusted to be close to the driving roller 9 through the adjustment component to clamp the titanium wire (at this time, the driving roller 9 and the auxiliary roller 10 are meshed). The position of the auxiliary roller 10 is fixed by the positioning component, and the driving roller 9 and the auxiliary roller 10 are driven to rotate by the stretching motor 11. The friction force between the friction ring and the titanium wire is used to straighten the titanium wire (the height of the friction ring is consistent with the height of the axis of the positioning cone 6).

[0023] like Figure 6 and Figure 8 As shown in the figure, the adjustment component includes an active shaft seat 12; the active shaft seat 12 is slidably mounted on the No. 2 mounting block 5, the auxiliary roller 10 is rotatably mounted on the active shaft seat 12, and the active shaft seat 12 slides on the No. 2 mounting block 5, so as to facilitate the adjustment of the gap size between the auxiliary roller 10 and the driving roller 9, thereby facilitating the placement of the titanium wire in the gap between the two.

[0024] like Figure 6 and Figure 8 As shown in, the positioning assembly includes a positioning pin 13, a positioning spring 14 and a pressing rod 15; a receiving hole is provided on the No. 2 mounting block 5, and the positioning pin 13 is slidably installed in the receiving hole. The positioning spring 14 is located in the receiving hole, and the two ends of the positioning spring 14 are respectively against the inner wall of the end of the receiving hole and the end of the positioning pin 13. The bottom of the active shaft seat 12 is provided with a positioning hole adapted to the positioning pin 13, and the pressing rod 15 slides through the active shaft seat 12, and the pressing rod 15 can push the positioning pin 13 out of the positioning hole. A boss is circumferentially provided on the outer periphery of the pressing rod 15, and a limiting slide groove slidingly matched with the boss is provided in the active shaft seat 12. The limiting slide groove A return spring 16 is arranged in the positioning slot, and the two ends of the return spring 16 can abut against the end inner wall and the boss of the limiting slot. When the titanium wire is straightened, the locating pin 13 is driven into the locating hole at the bottom of the active shaft seat 12 under the rebound action of the return spring 16, thereby fixing the position of the locating pin 13 on the No. 2 mounting block 5. By pressing the pressing rod 15, the pressing rod 15 drives the locating pin 13 to disengage from the locating hole, and slides the active shaft seat 12, thereby adjusting the size of the gap between the auxiliary roller 10 and the driving roller 9. The operation is simple and convenient, and the boss and the pressing rod 15 are driven to rise and reset by the rebound action of the return spring 16.

[0025] In actual situations, when testing the elasticity of titanium wire, in addition to tensile testing of the titanium wire, a bending test is also required. In addition to tensile testing, this equipment can also perform bending tests (strain gauges are pasted on the surface of the bending part of the titanium wire. When the titanium wire is bent and deformed, the strain gauges will feel different degrees of tensile or compressive strains. The strain value is measured according to the resistance change of the strain gauge, and then the stress is calculated based on the mechanical properties of the material. Since the stress state of different positions of the titanium wire is different during the bending process, it is usually necessary to paste strain gauges at multiple key positions to fully understand the stress distribution and changes), as follows.

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in , a guide mechanism is installed on the operating table 1. When the No. 1 stretching rod 2 and the No. 2 stretching rod 3 rotate toward each other, the guide mechanism can drive the No. 1 mounting block 4 and the No. 2 mounting block 5 to rotate away from each other. When the titanium wire is subjected to bending detection, the No. 1 stretching rod 2 and the No. 2 stretching rod 3 are driven by the driving mechanism to move toward each other. When the titanium wire is bent, in order to reduce the amount of bending between the titanium wire and the titanium wire clamped by the clamp, when the titanium wire is bent, the No. 1 mounting block 4 and the No. 2 mounting block 5 rotate away from each other at the same time, cooperating with the bending of the titanium wire, thereby ensuring that the bending detection result is affected, and the guide mechanism limits the rotation angle of the No. 1 mounting block 4 and the No. 2 mounting block 5, so that the rotation angle of the No. 1 mounting block 4 and the No. 2 mounting block 5 is consistent, thereby reducing the impact on the bending detection result of the titanium wire.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, the guide mechanism includes a No. 1 guide gear 17, a No. 2 guide gear 18 and a guide tooth plate 19; the No. 1 mounting block 4 is rotatably mounted on the No. 1 stretching rod 2 through the No. 1 rotating shaft, the No. 1 guide gear 17 is fixedly connected to the No. 1 rotating shaft of the No. 1 mounting block 4, the No. 2 mounting block 5 is rotatably mounted on the No. 2 stretching rod 3 through the No. 2 rotating shaft, the No. 2 guide gear 18 is fixedly connected to the No. 2 rotating shaft, and the guide tooth plate 19 is fixedly mounted on the operating table 1, the No. 1 guide gear 17 and the No. 2 guide gear 18 are both meshed with the guide tooth plate 19, when the No. 1 stretching rod 2 and the No. 2 stretching rod 3 move synchronously towards each other, they respectively drive the No. 1 guide gear 17 and the No. 2 guide gear 18 to move synchronously, because the No. 1 guide gear 17 and the No. 2 guide gear 18 are both meshed with the guide tooth plate 19, The No. 1 guide gear 17 and the No. 2 guide gear 18 rotate in opposite directions and at the same angle, so that the rotation angles at both ends of the titanium wire are consistent, reducing the factors that affect the bending test results (the rotation of the fixtures away from each other can ensure that the titanium wire maintains a uniform stress distribution during the bending process. If the fixtures do not rotate, stress concentration may occur in certain parts of the titanium wire during bending, resulting in local deformation or fracture. The rotating fixture can reduce this stress concentration, so that the titanium wire is subjected to more uniform force during the entire bending process. The rotation of the fixture can reduce friction and wear on the surface of the sample. During the bending process, the relative movement between the fixture and the sample may cause surface damage. The rotating fixture can reduce this damage, thereby better protecting the sample surface).

[0028] like Figure 2 , Figure 3 and Figure 4As shown in, the driving mechanism includes a No. 1 gear 20, a No. 2 gear 21 and a driving motor; the No. 1 gear 20 is fixedly connected to the end of the No. 1 stretching rod 2, the No. 1 gear 20 is rotatably mounted on the operating table 1, the No. 2 gear 21 is fixedly connected to the end of the No. 2 stretching rod 3, the No. 2 gear 21 is rotatably mounted on the operating table 1, the No. 1 gear 20 is meshed with the No. 2 gear 21, the driving motor is fixedly mounted in the operating table 1, the output shaft of the driving motor is fixedly connected to the No. 1 gear 20, a protective cover 22 is installed on the operating table 1, the protective cover 22 covers the outside of the No. 1 gear 20 and the No. 2 gear 21, the No. 1 gear 20 is driven to rotate by the driving motor, and since the No. 2 gear 21 is meshed with the No. 1 gear 20, the No. 1 gear 20 and the No. 2 gear 21 are driven to rotate synchronously away from or close to each other, thereby realizing the same speed rotation of the No. 1 stretching rod 2 and the No. 2 stretching rod 3, reducing the factors affecting the detection results.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic testing device for titanium wire elasticity, characterized in that: The operating table (1) comprises a first stretching rod (2) and a second stretching rod (3) which are rotatably mounted on the top surface of the operating table (1); the first stretching rod (2) and the second stretching rod (3) are symmetrically arranged with respect to the operating table (1); a driving mechanism is mounted on the operating table (1); the driving mechanism can synchronously drive the first stretching rod (2) and the second stretching rod (3) to rotate on the operating table (1); and the first stretching rod (2) and the second stretching rod (3) rotate in opposite directions; A first mounting block (4) is rotatably mounted on the first stretching rod (2), a second mounting block (5) is rotatably mounted on the second stretching rod (3), and a clamp is mounted on both the first mounting block (4) and the second mounting block (5); The No. 1 mounting block (4) is provided with an end positioning structure, the end positioning structure being used to fix one end of the titanium wire, and the No. 2 mounting block (5) is provided with a positioning and stretching mechanism, the positioning and stretching mechanism being used to straighten the titanium wire and fix the position of the other end of the titanium wire, and both clamps are located between the end positioning structure and the positioning and stretching mechanism.

2. The automatic testing device for titanium wire elasticity according to claim 1, characterized in that: The end positioning structure comprises a positioning cone (6), an elastic clamping block (7) and a threaded extrusion cylinder (8); the positioning cone (6) is fixedly mounted on the No. 1 mounting block (4), and the positioning cone (6) and the No. 1 mounting block (4) are arranged in parallel; there are a plurality of elastic clamping blocks (7), and the plurality of elastic clamping blocks (7) are arranged in a ring array at the end of the positioning cone (6); the threaded extrusion cylinder (8) is threadedly mounted on the positioning cone (6), and the threaded extrusion cylinder (8) can extrude the plurality of elastic clamping blocks (7) to move toward each other.

3. The automatic testing device for titanium wire elasticity according to claim 1, characterized in that: The positioning and stretching mechanism comprises a driving roller (9), an auxiliary roller (10), a stretching motor (11), an adjustment component and a positioning component; the driving roller (9) and the auxiliary roller (10) are both rotatably mounted on the second mounting block (5), the driving roller (9) and the auxiliary roller (10) are arranged parallel to each other, the stretching motor (11) is mounted in the second mounting block (5), and the output shaft of the stretching motor (11) is fixedly connected to the driving roller (9); The adjustment component is used to adjust the distance between the auxiliary roller (10) and the driving roller (9); The positioning assembly is used to fix the position of the auxiliary roller (10) on the second mounting block (5).

4. The titanium wire elasticity automatic detection device according to claim 3, characterized in that: The adjustment assembly comprises a driving shaft seat (12); the driving shaft seat (12) is slidably mounted on a second mounting block (5), and the auxiliary roller (10) is rotatably sleeved on the driving shaft seat (12).

5. The titanium wire elasticity automatic detection device according to claim 4, characterized in that: The positioning assembly comprises a positioning pin (13), a positioning spring (14) and a pressing rod (15); a receiving hole is provided on the second mounting block (5), the positioning pin (13) is slidably installed in the receiving hole, the positioning spring (14) is located in the receiving hole, the two ends of the positioning spring (14) are respectively abutted against the inner wall of the end of the receiving hole and the end of the positioning pin (13), and a positioning hole adapted to the positioning pin (13) is provided at the bottom of the active shaft seat (12); The pressing rod (15) slides through the active shaft seat (12), and the pressing rod (15) can push the positioning pin (13) out of the positioning hole. A boss is circumferentially arranged on the outer periphery of the pressing rod (15). A limiting slide groove slidably matched with the boss is provided in the active shaft seat (12). A return spring (16) is provided in the limiting slide groove. Both ends of the return spring (16) can abut against the inner wall of the end of the limiting slide groove and the boss.

6. The titanium wire elasticity automatic detection device according to claim 1, characterized in that: A guide mechanism is installed on the operating table (1), and when the No. 1 stretching rod (2) and the No. 2 stretching rod (3) rotate toward each other, the guide mechanism can drive the No. 1 mounting block (4) and the No. 2 mounting block (5) to rotate away from each other.

7. The automatic testing device for titanium wire elasticity according to claim 6, characterized in that: The guide mechanism comprises a No. 1 guide gear (17), a No. 2 guide gear (18) and a guide tooth plate (19); the No. 1 mounting block (4) is rotatably mounted on the No. 1 stretching rod (2) via a No. 1 rotating shaft, and the No. 1 guide gear (17) is fixedly connected to the No. 1 rotating shaft of the No. 1 mounting block (4); The second mounting block (5) is rotatably mounted on the second stretching rod (3) via a second rotating shaft, and the second guide gear (18) is fixedly connected to the second rotating shaft; The guide tooth plate (19) is fixedly mounted on the operating table (1), and the first guide gear (17) and the second guide gear (18) are both meshed with the guide tooth plate (19).

8. The titanium wire elasticity automatic detection device according to claim 1, characterized in that: The driving mechanism comprises a first gear (20), a second gear (21) and a driving motor; the first gear (20) is fixedly connected to the end of the first stretching rod (2), the first gear (20) is rotatably mounted on the operating table (1), the second gear (21) is fixedly connected to the end of the second stretching rod (3), the second gear (21) is rotatably mounted on the operating table (1), the first gear (20) is meshed with the second gear (21), the driving motor is fixedly mounted in the operating table (1), and the output shaft of the driving motor is fixedly connected to the first gear (20).

9. The titanium wire elasticity automatic detection device according to claim 8, characterized in that: A protective cover (22) is installed on the operating table (1), and the protective cover (22) covers the outside of the first gear (20) and the second gear (21).

10. The titanium wire elasticity automatic detection device according to claim 1, characterized in that: The clamp comprises two clamping blocks (23); the two clamping blocks (23) are both slidably mounted on a No. 1 mounting block (4).

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