Special-shaped metal piece tensile test equipment

Abstract

The invention relates to the technical field of mechanical engineering material testing, and discloses special-shaped metal part tensile testing equipment which comprises a control table, a detection table is arranged on the rear side of the control table, a tensile mechanism is arranged on the right side of the detection table, and two electric telescopic rods are slidably connected to the middle of the detection table. A torque sensor is fixed to the top of the electric telescopic rod, a clamping mechanism is arranged on one side of the electric telescopic rod, transmission assemblies are arranged on the left side and the right side of the detection table correspondingly, a placement table is slidably connected to the middle of the control table, and the clamping mechanism comprises a connecting disc; the connecting disc is installed on the side, close to the containing table, of the electric telescopic rod. Through mutual cooperation of the clamping mechanism and the adjusting assembly, the clamping mechanism is driven by power of the adjusting assembly, so that the multiple arc-shaped arms synchronously stretch out and draw back in the radial direction, the arc-shaped arms are matched with the self-adaptive rotating fixing claws, the complex curved surface of the special-shaped workpiece is tightly attached, and the clamping requirements of different size ranges are met.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical engineering material testing, in particular to a special-shaped metal part tensile testing device. Background Art

[0002] Special-shaped metal parts refer to metal workpieces with complex geometric shapes, asymmetric structures or special curved surfaces, such as turbine blades in the aerospace field and special-shaped connectors in the automotive industry. Due to their irregular shapes, these workpieces are prone to unstable clamping and uneven stress distribution during tensile testing, resulting in test data deviations and even workpiece damage. Traditional testing methods usually rely on standardized fixtures, which are difficult to adapt to the diverse surface features of special-shaped parts. In particular, there is a lack of effective clamping solutions for thin-walled and multi-curved workpieces, which seriously restricts the accuracy of material mechanical property evaluation;

[0003] In the prior art, tensile testing equipment for special-shaped metal parts is usually composed of hydraulic chucks or rigid mechanical claws. The clamping force is applied through fixed points, and the distance between the jaws is manually adjusted to accommodate workpieces of different sizes. After the workpiece is clamped by the hydraulic chuck, the motor drives the screw to move one clamping end while the other side remains fixed, thereby applying a unidirectional tensile force. The stretching process is then captured by a camera at a fixed position, and a load-displacement curve is generated in conjunction with a mechanical sensor.

[0004] Although the tensile testing equipment in the prior art can perform basic mechanical property tests on metal parts, some equipment still has certain defects when dealing with special-shaped metal parts. The traditional fixtures of the existing equipment rely on fixed-point clamping, which is difficult to adapt to the geometric characteristics of complex curved workpieces, resulting in uneven clamping force distribution, which can easily cause workpiece slippage or surface damage, affecting the test accuracy. In addition, during the stretching process, there is only a fixed perspective for surface observation of the workpiece, and it is impossible to capture the microscopic deformation details of the entire stretching process in real time.

[0005] To this end, the present invention proposes a special-shaped metal part tensile testing device to solve the deficiencies in the prior art. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a tensile testing device for special-shaped metal parts, which solves the problems of unstable clamping of special-shaped metal parts, limited observation and single data.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a special-shaped metal part tensile testing device, comprising a control console, a detection platform is provided at the rear side of the control console, a stretching mechanism is provided at the right side of the detection platform, two electric telescopic rods are slidably connected to the middle of the detection platform, a torque sensor is fixed to the top of the electric telescopic rod, a clamping mechanism is provided on one side of the electric telescopic rod, transmission components are provided on the left and right sides of the detection platform, and a placing platform is slidably connected to the middle of the control console;

[0008] The clamping mechanism includes a connecting disc, which is installed on a side of the electric telescopic rod close to the placement table. The outer circumference of the connecting disc is circumferentially fixedly connected to a plurality of evenly distributed connecting seats, the interior of the connecting seat is rotatably connected to an arc arm, a rotating shaft is fixed to one end of the arc arm away from the connecting seat, a fixed claw is rotatably connected to the middle of the rotating shaft, and an adjustment component is provided in the middle of the connecting disc.

[0009] Preferably, the stretching mechanism includes a motor 1, which is installed on the right side of the detection platform. A bidirectional threaded rod is fixed to the output end of the motor 1, a bevel gear 1 is fixed to the left and right ends of the bidirectional threaded rod, a moving block is threadedly connected to the outer periphery of the left and right ends of the bidirectional threaded rod, and a connecting mechanism is provided in the middle of the bidirectional threaded rod.

[0010] Preferably, the transmission assembly includes bevel gear 2, which is rotatably connected to the inside of the detection platform, and is meshed with bevel gear 1. A one-way threaded rod is fixed inside bevel gear 2, and the outer periphery of the one-way threaded rod is threadedly connected to a connecting frame, and a detection mechanism is provided in the middle of the connecting frame.

[0011] Preferably, the connecting mechanism includes pulley 1, which is fixed at the middle part of the bidirectional threaded rod, and pulley 2 is rotatably connected to the inner rear side of the detection platform. A transmission belt is provided on the outer periphery of pulley 1 and pulley 2, and drive components are provided on the left and right sides of pulley 2.

[0012] Preferably, the adjustment component includes an electric push rod, which is fixed inside the connecting disk, a movable sleeve column is fixed to the end of the electric push rod away from the connecting disk, a movable disk is fixed to the end of the movable sleeve column away from the electric push rod, a plurality of spherical connecting blocks 1 evenly distributed in an annular shape are fixed to the outer periphery of one side of the movable disk close to the movable sleeve column, a connecting rod is movably connected to the outer periphery of the spherical connecting block 1, and a spherical connecting block 2 is movably connected to the inside of the end of the connecting rod away from the spherical connecting block 1.

[0013] Preferably, the detection mechanism includes motor 2, which is fixed at the middle of the connecting frame, and a main camera is fixed at the output end of motor 2. Connecting rods are rotated on the left and right sides of the main camera, and a secondary camera is rotated at the end of the connecting rod away from the main camera.

[0014] Preferably, the driving assembly includes a transmission shaft, which is fixed at the middle part of the pulley 2, a cylindrical gear is fixed to the outer periphery of the transmission shaft, a tooth plate is slidably provided on the inner rear side of the detection table, the tooth plate is meshed with the cylindrical gear, a transmission block is fixed on the side of the tooth plate close to the placement table, and the end of the transmission block away from the tooth plate is fixed to the bottom of the placement table.

[0015] Preferably, the side of the second spherical connecting block away from the connecting rod is fixed to the outer periphery of the arc-shaped arm, and the end of the moving block away from the bidirectional threaded rod is fixed to the bottom of the electric telescopic rod.

[0016] Preferably, the left and right ends of the connecting frame are respectively slidably connected to the left and right sides of the interior of the detection platform, and the one-way threaded rod is rotationally connected to the interior of the detection platform.

[0017] Preferably, the outer periphery of the transmission block is slidably connected to the inner rear side of the detection platform.

[0018] The present invention provides a tensile testing device for special-shaped metal parts. It has the following beneficial effects:

[0019] 1. The present invention cooperates with the clamping mechanism and the adjusting component. The clamping mechanism is driven by the power of the adjusting component to make multiple arc-shaped arms radially extend and retract synchronously. With the adaptively rotating fixed claws, it can closely fit the complex curved surface of the special-shaped workpiece, cover the clamping requirements of different size ranges, effectively avoid local stress concentration, significantly improve the test stability and reliability, and solve the problem of unstable clamping and easy slipping of special-shaped metal parts by traditional clamps.

[0020] 2. The present invention realizes the mutual cooperation of the stretching mechanism, the transmission assembly and the detection mechanism. The power of the stretching mechanism is transmitted to the detection mechanism through the transmission assembly, driving the camera to dynamically adjust its position in the vertical direction. Combined with the multi-angle shooting function, the key information such as the surface crack extension and micro deformation of the workpiece during the stretching process is captured in real time, and synchronously analyzed with the torque data, providing high-precision multi-dimensional data support for material performance evaluation, solving the problem that traditional testing equipment cannot synchronously record stretching mechanical data and deformation details.

[0021] 3. The present invention solves the problem of limited observation field of view caused by the movement of the workpiece during the stretching process through the cooperation of the stretching mechanism, the coupling mechanism and the driving assembly. While the stretching mechanism applies uniform tension, the coupling mechanism transmits the rotational power to the driving assembly, driving the placement table to move backward synchronously, ensuring that the detection mechanism always maintains the best observation position, achieving precise matching of the stretching action and the avoidance operation, and avoiding the real-time observation of the key deformation area due to the displacement of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the detection mechanism of the present invention;

[0024] Figure 3 It is a structural schematic diagram of a bidirectional threaded rod of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the connecting disc of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the fixing claw of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the movable sleeve column of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the placement table of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the cylindrical gear of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the transmission shaft of the present invention;

[0031] Fig.10 It is a structural schematic diagram of the main camera of the present invention.

[0032] Among them, 1. control console; 2. testing table; 3. clamping mechanism; 301. connecting disc; 302. connecting seat; 303. arc arm; 304. fixing claw; 305. rotating shaft; 4. adjusting assembly; 401. electric push rod; 402. movable sleeve column; 403. movable disc; 404. spherical connecting block 1; 405. connecting rod; 406. spherical connecting block 2; 5. stretching mechanism; 501. motor 1; 502. bidirectional threaded rod; 503. bevel gear 1; 504. moving block; 6 , transmission assembly; 601, bevel gear 2; 602, one-way threaded rod; 603, connecting frame; 7, detection mechanism; 701, motor 2; 702, main camera; 703, connecting rod; 704, auxiliary camera; 8, coupling mechanism; 801, pulley 1; 802, transmission belt; 803, pulley 2; 9, driving assembly; 901, transmission shaft; 902, cylindrical gear; 903, toothed plate; 904, transmission block; 10, electric telescopic rod; 11, torque sensor; 12, placement table. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Please see attached Figure 1 - Attachment Figure 2 The embodiment of the present invention provides a special-shaped metal part tensile testing device, including a control console 1, a detection platform 2 is provided at the rear side of the control console 1, a stretching mechanism 5 is provided on the right side of the detection platform 2, two electric telescopic rods 10 are slidably connected in the middle of the detection platform 2, a torque sensor 11 is fixed on the top of the electric telescopic rod 10, a clamping mechanism 3 is provided on one side of the electric telescopic rod 10, transmission components 6 are provided on the left and right sides of the detection platform 2, and a placing table 12 is slidably connected in the middle of the control console 1;

[0035] Specifically, the control console 1 integrates a touch screen and a data processor for coordinating the operation of each module. A test bench 2 is arranged at the rear thereof, which is made of a carbon steel frame and has good rigid support. The two electric telescopic rods 10 in the middle of the test bench 2 have a maximum stroke of 150 mm and a thrust of 500 N. The torque sensor 11 at the top of the electric telescopic rod 10 has a range of 02000 N·m and an accuracy of ±0.3% FS, and monitors the tensile torque in real time. The clamping mechanism 3 is used to fix the metal workpiece, and the stretching mechanism 5 is used to stretch the metal workpiece.

[0036] Please see attached Figure 4 - Attachment Figure 6The clamping mechanism 3 includes a connecting disc 301, which is installed on one side of the electric telescopic rod 10 close to the placement table 12. The outer circumference of the connecting disc 301 is circumferentially fixedly connected with a plurality of evenly distributed connecting seats 302. The inner part of the connecting seat 302 is rotatably connected with an arc arm 303. A rotating shaft 305 is fixed at one end of the arc arm 303 away from the connecting seat 302. A fixed claw 304 is rotatably connected to the middle of the rotating shaft 305. An adjusting component 4 is provided in the middle of the connecting disc 301.

[0037] Specifically, the clamping mechanism 3 is installed on one side of the electric telescopic rod 10 close to the placement table 12 through a connecting disc 301. A plurality of connecting seats 302 are evenly distributed on the outer circumference of the connecting disc 301. An arc-shaped arm 303 is hinged inside each connecting seat 302 through a rotating shaft. A rotating shaft 305 is fixed at the end of the arc-shaped arm 303. The middle part of the rotating shaft 305 is rotatably connected to an adaptive fixed claw 304, which can freely deflect around the rotating shaft 305 to fit the surface of the special-shaped metal part. The adjustment component 4 is used to make the plurality of arc-shaped arms 303 radially expand or contract synchronously, so as to realize the adaptive clamping of the fixed claw 304 on the workpiece, and the clamping force is evenly distributed on the surface of the workpiece to avoid slippage or stress concentration.

[0038] Please see attached Figure 3 The stretching mechanism 5 includes a motor 501, which is installed on the right side of the testing platform 2. A bidirectional threaded rod 502 is fixed to the output end of the motor 501, and a bevel gear 503 is fixed to the left and right ends of the bidirectional threaded rod 502. The outer periphery of the left and right ends of the bidirectional threaded rod 502 is threadedly connected with a moving block 504, and a connecting mechanism 8 is provided in the middle of the bidirectional threaded rod 502.

[0039] Specifically, the motor 501 has a rated speed of 2000RPM and an output torque of 10N·m. A bidirectional threaded rod 502 is fixed at the output end, has a lead of 8mm, and is made of 40Cr alloy steel. Bevel gears 503 are welded and fixed at the left and right ends of the bidirectional threaded rod 502. The moving blocks 504 on the outer periphery of the two ends of the bidirectional threaded rod 502 are threadedly connected to the bidirectional threaded rod 502. When the motor 501 is started, the bidirectional threaded rod 502 rotates to drive the moving blocks 504 on both sides to move toward or in the opposite directions.

[0040] Please see attached Figure 3 The transmission assembly 6 includes a bevel gear 601, which is rotatably connected to the inside of the detection platform 2. The bevel gear 601 is meshed with the bevel gear 1 503. A one-way threaded rod 602 is fixed inside the bevel gear 601. The outer periphery of the one-way threaded rod 602 is threadedly connected to a connecting frame 603. The left and right ends of the connecting frame 603 are respectively slidably connected to the left and right sides of the inside of the detection platform 2. The one-way threaded rod 602 is rotatably connected to the inside of the detection platform 2. A detection mechanism 7 is provided in the middle of the connecting frame 603.

[0041] Specifically, the transmission assembly 6 meshes with the bevel gear 1 503 through the bevel gear 2 601, receives the high-speed power of the motor 1 501, and drives the one-way threaded rod 602 to rotate. The outer periphery of the one-way threaded rod 602 is threadedly connected to the connecting frame 603, which slides and is embedded in the guide groove of the detection table 2 at both ends to ensure the vertical movement stability. When the bevel gear 2 601 rotates synchronously with the bevel gear 1 503, the one-way threaded rod 602 drives the connecting frame 603 to produce vertical movement, so that the detection mechanism 7 gradually approaches the surface of the stretched metal part, captures the deformation details, and combines the torque sensor 11 data to realize the synchronous analysis of mechanics and deformation.

[0042] Please see attached Figure 7 - Attachment Fig. 9 The connecting mechanism 8 includes a pulley 801, which is fixed in the middle of the bidirectional threaded rod 502. The inner rear side of the detection platform 2 is rotatably connected with a pulley 803. The outer peripheries of the pulleys 801 and 803 are provided with a transmission belt 802. The left and right sides of the pulley 803 are provided with a driving assembly 9.

[0043] Specifically, pulley 1 801 is fixed in the middle of the bidirectional threaded rod 502 , and transmits power to pulley 2 803 on the rear side of the detection platform 2 through a transmission belt 802 made of polyurethane material, so that pulley 2 803 drives the driving component 9 to rotate.

[0044] Please see attached Figure 5 - Attachment Figure 6 The adjustment component 4 includes an electric push rod 401, which is fixed inside the connecting disk 301. A movable sleeve column 402 is fixed to one end of the electric push rod 401 away from the connecting disk 301. A movable disk 403 is fixed to one end of the movable sleeve column 402 away from the electric push rod 401. A plurality of spherical connecting blocks 404 uniformly distributed in an annular shape are fixed to the outer periphery of one side of the movable disk 403 close to the movable sleeve column 402. A connecting rod 405 is movably connected to the outer periphery of the spherical connecting block 404. A spherical connecting block 2 406 is movably connected to the inner side of the end of the connecting rod 405 away from the spherical connecting block 1 404. The spherical connecting block 2 406 is fixed to the outer periphery of the arc arm 303 on one side away from the connecting rod 405. One end of the moving block 504 away from the bidirectional threaded rod 502 is fixed to the bottom of the electric telescopic rod 10.

[0045] Specifically, the electric push rod 401 is fixed inside the connecting disk 301, and the output end is connected to the movable sleeve column 402. The movable disk 403 is fixed at the end of the movable sleeve column 402. A plurality of spherical connecting blocks 404 are evenly distributed in a ring shape on the outer periphery of one side of the movable disk 403 close to the movable sleeve column 402. Each spherical connecting block 404 is hinged to the spherical connecting block 2 406 on the outer periphery of the arc arm 303 through a connecting rod 405 to form a four-bar transmission structure. When the electric push rod 401 is extended or retracted, the movable disk 403 moves axially, and the spherical connecting block 2 406 is pushed by the connecting rod 405, thereby driving the multiple arc arms 303 to expand or contract radially synchronously, adjust the clamping diameter of the fixed claw 304, and adapt to the surface of the special-shaped metal parts to achieve high-precision dynamic adjustment.

[0046] Please see attached Fig.10 The detection mechanism 7 includes a second motor 701, which is fixed in the middle of the connecting frame 603. A main camera 702 is fixed at the output end of the second motor 701. Connecting rods 703 are rotated on the left and right sides of the main camera 702. A secondary camera 704 is rotated at the end of the connecting rod 703 away from the main camera 702.

[0047] Specifically, motor 2 701 has a rated speed of 30RPM and an output torque of 2N·m. It is fixed in the middle of the connecting frame 603. The output end drives the main camera 702 to rotate around the axis. The main camera 702 has a resolution of 4096×2160 and a frame rate of 120fps. It is equipped with an adjustable focal length lens. The main camera 702 is provided with a micro motor for rotating the control connecting rod 703. The end of the connecting rod 703 rotates to connect the auxiliary camera 704 to form a multi-angle observation system. When motor 2 701 is started, the main camera 702 rotates at a low speed, and the control connecting rod 703 rotates to adjust the shooting direction of the auxiliary camera 704, covering the front and side of the stretching area of ​​the metal part, capturing surface cracks, deformation details and microstructural changes in real time, and achieving a dynamic balance between mechanical testing and visual inspection.

[0048] Please see attached Fig. 9 The driving assembly 9 includes a transmission shaft 901, which is fixed in the middle of the pulley 803. A cylindrical gear 902 is fixed on the outer periphery of the transmission shaft 901. A toothed plate 903 is slidably provided on the inner rear side of the detection platform 2. The toothed plate 903 meshes with the cylindrical gear 902. A transmission block 904 is fixed on the side of the toothed plate 903 close to the placement platform 12. The outer periphery of the transmission block 904 is slidably connected to the inner rear side of the detection platform 2, and the end of the transmission block 904 away from the toothed plate 903 is fixed to the bottom of the placement platform 12.

[0049] Specifically, the transmission shaft 901 is fixed in the middle of the pulley 2 803, receiving the rotational power transmitted by the transmission belt 802. The cylindrical gear 902 is fixed on the outer periphery of the transmission shaft 901, meshing with the tooth plate 903 slidably connected to the rear side of the inside of the detection platform 2, converting the rotational motion into horizontal linear motion. The tooth plate 903 is welded with a transmission block 904 on one side close to the placement platform 12, and the transmission block 904 is slidably embedded in the rear side of the detection platform 2, and the other end is fixed to the bottom of the placement platform 12. When the pulley 2 803 rotates synchronously with the bidirectional threaded rod 502 of the stretching mechanism 5, the cylindrical gear 902 drives the tooth plate 903 to move backward horizontally, driving the placement platform 12 to retreat at the same rate to avoid blocking the camera field of view of the detection mechanism 7.

[0050] Working principle: When inspecting special-shaped metal parts, first place the metal parts on the front top of the placement table 12, then start the electric telescopic rod 10, so that the electric telescopic rod 10 drives the connecting disc 301 to move toward the placement table 12, and then start the connecting disc 301, so that the electric push rod 401 controls the movement of the movable sleeve column 402. When the movable sleeve column 402 moves, the movable disc 403 connected to the other end of the movable sleeve column 402 will move with the movable sleeve column 402. In the process of the movement of the movable disc 403, the distance between the spherical connecting block 1 404 and the spherical connecting block 2 406 changes. As a result, the spherical connecting block 1 404 and the spherical connecting block 2 406 generate corresponding activities, thereby causing the arc-shaped arm 303 to gradually expand outward, and then the connecting disc 301 is moved forward again by the electric telescopic rod 10. After ensuring that the metal piece can be clamped, the electric push rod 401 can be started again, so that the electric push rod 401 drives the movable sleeve column 402 to move toward the connecting disc 301. At this time, the multiple arc-shaped arms 303 shrink, and the fixed claws 304 gradually contact the special-shaped metal piece, and will generate adaptive rotation around the rotating shaft 305, closely fit the complex curved surface of the special-shaped metal piece, and realize non-slip clamping;

[0051] After clamping the metal piece, the motor 501 can be started, and the motor 501 controls the two-way threaded rod 502 to rotate. At this time, the bevel gears 503 at both ends of the two-way threaded rod 502 will rotate together with the two-way threaded rod 502. During the rotation of the two-way threaded rod 502, the moving block 504 on the outer periphery of the two-way threaded rod 502 will drive the electric telescopic rod 10 to move along the axis of the two-way threaded rod 502. At this time, the two electric telescopic rods 10 move in opposite directions, that is, tensile force is applied to the metal workpiece from the left and right sides to perform tensile testing;

[0052] When the two-way threaded rod 502 rotates, the pulley 1 801 in the middle of the two-way threaded rod 502 will rotate accordingly with the two-way threaded rod 502, and the transmission belt 802 will transmit the rotational motion of the pulley 1 801 to the pulley 2 803, so that the pulley 2 803 drives the transmission shaft 901 to rotate, and the outer periphery of the transmission shaft 901 is fixed to the cylindrical gear 902. Through the motion transmission, the cylindrical gear 902 will further rotate. Because the cylindrical gear 902 and the toothed plate 903 are in a meshing connection relationship, when the cylindrical gear 902 rotates, the toothed plate 903 will produce a horizontal backward movement in the opposite direction of the rotation of the cylindrical gear 902. At this time, the placement table 12 connected to the top of the toothed plate 903 through the transmission block 904 will move backward accordingly with the cylindrical gear 902 to avoid blocking the camera's field of view, thereby facilitating the main camera 702 and the auxiliary camera 704 to observe the stretched metal workpiece;

[0053] Because the bevel gear 2 601 is meshed with the bevel gear 1 503, when the two-way threaded rod 502 rotates, the bevel gear 1 503 will drive the bevel gear 2 601 to rotate synchronously. Through the meshing transmission between the bevel gear 1 503 and the bevel gear 2 601, when the two-way threaded rod 502 rotates, the one-way threaded rod 602 rotates synchronously. At this time, the connecting frame 603 connected by the thread on the outer periphery of the one-way threaded rod 602 will move vertically downward along the one-way threaded rod 602. When the connecting frame 603 moves downward, the motor 2 701 drives the main camera 701 to rotate. The camera 702 gradually approaches the metal piece, so that when the metal piece is stretched, the key stretching parts of the metal piece can be photographed and recorded in time. By starting the second motor 701, the main camera 702 is rotated. After the main camera 702 rotates 90 degrees, the motor 701 can be stopped. At this time, the auxiliary camera 704 is rotated through the two connecting rods 703, so that the auxiliary camera 704 can take pictures and record the surface of the metal workpiece, thereby achieving multi-angle recording of stretching deformation, crack extension and microstructure changes;

[0054] After the tensile data is recorded, the test equipment can be restored, the metal parts can be removed, and the next experiment can be carried out.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tensile testing device for special-shaped metal parts, comprising a control console (1), characterized in that: A detection platform (2) is provided at the rear side of the control console (1), a stretching mechanism (5) is provided on the right side of the detection platform (2), two electric telescopic rods (10) are slidably connected to the middle of the detection platform (2), a torque sensor (11) is fixed to the top of the electric telescopic rod (10), a clamping mechanism (3) is provided on one side of the electric telescopic rod (10), transmission components (6) are provided on the left and right sides of the detection platform (2), and a placement platform (12) is slidably connected to the middle of the control console (1); The clamping mechanism (3) comprises a connecting disc (301), the connecting disc (301) being mounted on a side of the electric telescopic rod (10) close to the placing platform (12), the outer circumference of the connecting disc (301) being fixedly connected to a plurality of evenly distributed connecting seats (302) in a circular shape, the interior of the connecting seat (302) being rotatably connected to an arc-shaped arm (303), one end of the arc-shaped arm (303) being fixedly connected to a rotating shaft (305) away from the connecting seat (302), the middle part of the rotating shaft (305) being rotatably connected to a fixing claw (304), and an adjusting component (4) being provided in the middle part of the connecting disc (301).

2. The tensile testing device for special-shaped metal parts according to claim 1, characterized in that: The stretching mechanism (5) comprises a motor 1 (501), wherein the motor 1 (501) is installed on the right side of the detection platform (2), a bidirectional threaded rod (502) is fixed to the output end of the motor 1 (501), bevel gears 1 (503) are fixed to the left and right ends of the bidirectional threaded rod (502), moving blocks (504) are threadedly connected to the outer circumferences of the left and right ends of the bidirectional threaded rod (502), and a connecting mechanism (8) is provided in the middle of the bidirectional threaded rod (502).

3. The special-shaped metal part tensile testing device according to claim 2, characterized in that: The transmission assembly (6) comprises a second bevel gear (601), the second bevel gear (601) being rotatably connected to the inside of the detection platform (2), the second bevel gear (601) being meshed with the first bevel gear (503), a one-way threaded rod (602) being fixed inside the second bevel gear (601), the outer periphery of the one-way threaded rod (602) being threadedly connected to a connecting frame (603), and a detection mechanism (7) being provided in the middle of the connecting frame (603).

4. The special-shaped metal part tensile testing device according to claim 2, characterized in that: The coupling mechanism (8) comprises a first pulley (801), wherein the first pulley (801) is fixed at the middle part of the bidirectional threaded rod (502), and a second pulley (803) is rotatably connected to the inner rear side of the detection platform (2), and a transmission belt (802) is provided on the outer periphery of the first pulley (801) and the second pulley (803), and a driving assembly (9) is provided on both the left and right sides of the second pulley (803).

5. The special-shaped metal part tensile testing device according to claim 2, characterized in that: The adjustment component (4) comprises an electric push rod (401), wherein the electric push rod (401) is fixed inside the connecting disc (301), a movable sleeve column (402) is fixed to one end of the electric push rod (401) away from the connecting disc (301), a movable disc (403) is fixed to one end of the movable sleeve column (402) away from the electric push rod (401), a plurality of spherical connecting blocks (404) evenly distributed in an annular shape are fixed to the outer periphery of one side of the movable disc (403) close to the movable sleeve column (402), a connecting rod (405) is movably connected to the outer periphery of the spherical connecting block (404), and a spherical connecting block (406) is movably connected to the inner side of one end of the connecting rod (405) away from the spherical connecting block (404).

6. The special-shaped metal part tensile testing device according to claim 3, characterized in that: The detection mechanism (7) comprises a second motor (701), wherein the second motor (701) is fixed at the middle of the connecting frame (603), a main camera (702) is fixed at the output end of the second motor (701), connecting rods (703) are rotatable on the left and right sides of the main camera (702), and a secondary camera (704) is rotatable at one end of the connecting rod (703) away from the main camera (702).

7. The special-shaped metal part tensile testing device according to claim 4, characterized in that: The driving assembly (9) comprises a transmission shaft (901), wherein the transmission shaft (901) is fixed to the middle part of the pulley 2 (803), a cylindrical gear (902) is fixed to the outer periphery of the transmission shaft (901), a toothed plate (903) is slidably provided on the inner rear side of the detection platform (2), the toothed plate (903) is meshed with the cylindrical gear (902), a transmission block (904) is fixed to a side of the toothed plate (903) close to the placement platform (12), and an end of the transmission block (904) away from the toothed plate (903) is fixed to the bottom of the placement platform (12).

8. The special-shaped metal part tensile testing device according to claim 5, characterized in that: The side of the second spherical connecting block (406) away from the connecting rod (405) is fixed to the outer periphery of the arc-shaped arm (303), and the end of the moving block (504) away from the bidirectional threaded rod (502) is fixed to the bottom of the electric telescopic rod (10).

9. The special-shaped metal part tensile testing device according to claim 3, characterized in that: The left and right ends of the connecting frame (603) are respectively slidably connected to the left and right sides inside the detection platform (2), and the one-way threaded rod (602) is rotationally connected to the inside of the detection platform (2).

10. The special-shaped metal part tensile testing device according to claim 7, characterized in that: The outer periphery of the transmission block (904) is slidably connected to the inner rear side of the detection platform (2).

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