Tensile testing machine capable of monitoring on line

Abstract

According to the technical scheme, the tensile testing machine is characterized in that the tensile testing machine comprises a base, a first sectional material and a second sectional material, the first sectional material and the second sectional material are symmetrically arranged on the base, the top sides of the first sectional material and the second sectional material are jointly connected with a bottom plate, fixing frames are symmetrically arranged on the bottom plate, and the top sides of the two fixing frames are jointly connected with a cover plate; a movable pedestal is connected to the bottom plate through a lifting piece, an upper clamp is connected to the bottom of the movable pedestal through a force sensor, a lower clamp matched with the upper clamp is arranged on the bottom plate through a stretching clamp, and a metal magnetic memory detection probe is horizontally arranged on the fixing frame; the device has the technical effects that force data is directly read through the force sensor, so that the data transmission continuity of the force is ensured, and meanwhile, the metal magnetic memory detection probe can read metal magnetic memory signals generated when the test piece is stretched, so that the diversity of experiments is greatly increased, and the scientific research efficiency and the data detection accuracy are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a tensile testing machine capable of online monitoring. Background Art

[0002] Tensile testing machine, also known as material tensile testing machine and universal tensile strength testing machine, is a new generation of mechanical testing equipment that integrates computer control, automatic measurement, data acquisition, screen display, and test result processing.

[0003] Tensile fatigue is a common phenomenon in mechanical equipment. After long-term service, tensile fatigue damage to ferromagnetic parts such as high-end bearings, precision gears, connecting rods, crankshafts, etc. will seriously affect the performance and life of the equipment. It is very necessary to conduct tensile fatigue performance tests on the ferromagnetic materials of these components.

[0004] Most existing testing machines are basic or standard testing machines. Some testing machines combine mechanical loading and hydraulic loading, which are relatively complex. There are still many problems in structural design and function implementation, such as weak force transmission stability, poor working condition of sensors, and inability to monitor the degree and status of stretching online. Utility Model Content

[0005] The purpose of the utility model is to provide a tensile testing machine that can be monitored online. Its advantages are: force data is directly read through the force sensor, thereby ensuring the continuity of force data transmission; at the same time, the metal magnetic memory detection probe reads the metal magnetic memory signal generated when the test piece is stretched, which greatly increases the diversity of experiments and greatly improves scientific research efficiency and data detection accuracy.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a tensile testing machine capable of online monitoring, comprising a base and a first profile and a second profile symmetrically arranged on the base, wherein the top sides of the first profile and the second profile are commonly connected to a bottom plate, a fixing frame is symmetrically provided on the bottom plate, and the top sides of the two fixing frames are commonly connected to a cover plate, a movable platform is connected to the bottom plate via a lifting member, the bottom of the movable platform is connected to an upper clamp via a force sensor, a lower clamp is provided on the bottom plate via a tensile clamp that cooperates with the upper clamp, and a magnetic memory module is horizontally arranged on the fixing frame;

[0007] The magnetic memory module includes a slide rail arranged on a fixed frame, a slider is slidably connected to the slide rail, a second rotating motor is connected to the slider through a connector, a lower arm is rotatably connected to the output end of the second rotating motor, the lower arm is hinged to the upper arm on the side away from the second rotating motor, the end of the upper arm is connected to the U-shaped frame through the first rotating motor, a connecting piece is provided on the outside of the U-shaped frame, the connecting piece is connected to a metal magnetic memory detection probe through a probe clamp, and a first support arm and a second support arm are respectively provided on the inner sides of the upper arm and the lower arm.

[0008] The utility model is further configured as follows: the lifting member includes a ball screw symmetrically connected to the cover plate and the base plate, a threaded seat is threadedly connected to the ball screw, two threaded seats are arranged on the bottom side of the movable platform, and the bottom of one of the ball screws is connected to a driving member.

[0009] The utility model is further configured as follows: the driving member includes a mounting frame fixedly connected to the base, a stepping motor is provided on the mounting frame, the output end of the stepping motor is coaxially connected to a rotating shaft, the end of the rotating shaft is provided with a first synchronous wheel, the first synchronous wheel is connected to a ball screw, a synchronous belt is provided on the outer side of the first synchronous wheel, and a second synchronous wheel connected to another ball screw is provided on the other side of the synchronous belt.

[0010] The utility model is further configured as follows: a power supply and a controller electrically connected to the stepping motor are installed on the base.

[0011] The utility model is further configured as follows: an emergency stop button is connected to the outer side of the fixing frame through the first shell, and a work advance button is provided on the bottom side of the fixing frame located at the first shell through the second shell.

[0012] The utility model is further configured as follows: an anti-skid pad is provided on the bottom side of the base, and the bottom of the anti-skid pad is densely covered with anti-skid patterns.

[0013] The utility model is further configured as follows: the bottom plate is located on the outside of the fixing frame and is surrounded and connected with a reinforcement seat.

[0014] The utility model is further configured as follows: an emergency stop button is connected to the outer side of the fixing frame through the first shell, and a work advance button is provided on the bottom side of the fixing frame located at the first shell through the second shell.

[0015] In summary:

[0016] 1. When the specimen needs to be tensile tested, the specimen is fixed vertically by the upper and lower fixtures, and the stepper motor is driven. The stepper motor drives the rotating shaft to rotate, and then the rotating shaft drives the first synchronous wheel to rotate, and the first synchronous wheel drives the synchronous belt to rotate, and the synchronous belt drives the second synchronous wheel to rotate, thereby driving the two ball screws to rotate, and the ball screw drives the threaded seat to move, and then the threaded seat drives the mobile platform to rise, and the mobile platform drives the upper fixture to move upward, and the specimen is gradually stretched, and tensile fatigue damage is formed on the surface of the specimen. In this process, the force data is directly read by the force sensor, thereby ensuring the continuity of force data transmission. At the same time, the metal magnetic memory detection probe will read the metal magnetic memory signal generated when the specimen is stretched, which greatly increases the diversity of the experiment and greatly improves the scientific research efficiency and the accuracy of data detection.

[0017] 2. The manual and automatic combined mechanical arm adopted in the utility model has high flexibility, can stably clamp the magnetic memory probe, and perform comprehensive online monitoring of the tensile test piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of this embodiment;

[0019] Figure 2 is a top view of this embodiment;

[0020] Figure 3 It is a perspective view of this embodiment;

[0021] Figure 4 This is a schematic diagram of the overall structure of the magnetic memory module in this embodiment.

[0022] Figure numerals: 1. first profile; 2. second profile; 3. base; 4. reducer; 5. power supply; 6. controller; 7. mounting bracket; 8. bottom plate; 9. reinforcement base; 10. fixing bracket; 11. fixing base; 12. ball screw; 13. stretching clamp; 14. magnetic memory module; 15. force sensor; 16. first housing; 17. threaded base; 18. movable base; 19. cover plate; 20. lower clamp; 21. coupling; 22. metal magnetic memory detection Probe; 23. Slide rail; 24. Slider; 25. First synchronous wheel; 26. Stepper motor; 27. Probe fixture; 28. Robot arm fixture; 29. Emergency stop button; 30. Feed button; 31. Second housing; 32. Synchronous belt; 33. Connector; 34. Frame; 35. First rotating motor; 36. Drive motor; 37. Upper arm; 38. Second support arm; 39. Lower arm; 40. First support arm; 41. Second rotating motor; 42. Fixer. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings.

[0024] Example: Refer to as Figure 1-4 shown, a tensile testing machine capable of online monitoring, including a base 3, a first profile 1 and a second profile 2 symmetrically arranged on the base 3. A bottom plate 8 is commonly connected to the top sides of the first profile 1 and the second profile 2. Fixed frames 10 are symmetrically arranged on the bottom plate 8. A cover plate 19 is commonly connected to the top sides of the two fixed frames 10. A moving table 18 is connected to the bottom plate 8 through a lifting member. An upper fixture is connected to the bottom of the moving table 18 through a force sensor 15. A lower fixture 20 cooperating with the upper fixture is arranged on the bottom plate 8 through a tensile gripper 13. A magnetic memory module 14 is horizontally arranged on the fixed frame 10; the magnetic memory module 14 includes a slide rail 23 arranged on the fixed frame 10. A slider 24 is slidably connected to the slide rail 23. A second rotating motor 41 is connected to the slider 24 through a connector. The output end of the second rotating motor 41 is rotatably connected to a lower arm 39. One side of the lower arm 39 away from the second rotating motor 41 is hinged to an upper arm 37. The end of the upper arm 37 is connected to a C-shaped frame 34 through a first rotating motor 35. A connecting member 33 is arranged on the outer side of the C-shaped frame 34. The connecting member 33 is connected to a metal magnetic memory detection probe 22 through a probe fixture 27. First support arms 40 and second support arms 38 are respectively arranged on the inner sides of the upper arm 37 and the lower arm 39. The lifting member includes ball screws 12 symmetrically and rotatably connected between the cover plate 19 and the bottom plate 8. Threaded seats 17 are threadedly connected to the ball screws 12. The two threaded seats 17 are arranged on the bottom side of the moving table 18. The bottom of one of the ball screws 12 is connected to a driving member. The driving member includes a mounting bracket 7 fixedly connected to the base 3. A stepping motor 26 is arranged on the mounting bracket 7. The output end of the stepping motor 26 is coaxially connected to a rotating shaft. A first synchronous wheel 21 is arranged at the end of the rotating shaft. The first synchronous wheel 21 is connected to the ball screw 12. A synchronous belt is sleeved outside the first synchronous wheel 21. The other side of the synchronous belt is provided with a second synchronous wheel connected to the other ball screw 12. A fixed seat 11 for fixing the ball screw 12 is arranged on the bottom plate 8. And the lower arm 39 is slidably connected to the ball screw 12 through a robotic arm fixture 28;

[0025] Specifically, when a tensile test is required for the specimen, the specimen is fixed vertically by the upper clamp and the lower clamp 20, and the stepper motor 26 is driven. The stepper motor 26 drives the rotating shaft to rotate, and then the rotating shaft drives the first synchronous wheel 21 to rotate, the first synchronous wheel 21 drives the synchronous belt to rotate, and the synchronous belt drives the second synchronous wheel to rotate, thereby driving the two ball screws 12 to rotate, the ball screw 12 drives the threaded seat 17 to move, and then the threaded seat 17 drives the moving platform 18 to rise, and the moving platform 18 drives the upper clamp to move upward, and the specimen is gradually stretched, and tensile fatigue damage is formed on the surface of the specimen. In this process, the force data is directly read by the force sensor 15, thereby ensuring the continuity of the force data transmission, and at the same time, the metal magnetic memory The detection probe 14 reads the metal magnetic memory signal generated when the specimen is stretched, greatly increasing the diversity of experiments and greatly improving scientific research efficiency and data detection accuracy. The first rotating motor 35 drives the non-standard connector 33 designed by the team to rotate, so that the metal magnetic memory detection probe 22, connector 33 and probe fixture 27 can rotate 360 degrees. The drive motor 36 and the second rotating motor 41 are installed at the connection between the upper arm 37 and the lower arm 39, and the lower arm 39 and the fixture 42. Through the connection between the slider 24 and the slide rail 23, it can be accurately moved to the part of the test specimen to be tested, and the magnetic field changes at the surface fatigue damage can be analyzed, thereby realizing online monitoring of the degree of tensile fatigue damage. This greatly increases the diversity of experiments and greatly improves scientific research efficiency.

[0026] Furthermore, a power supply 5 and a controller 6 electrically connected to the stepper motor 26 are installed on the base 3, an emergency stop button 29 is connected to the outside of the fixing bracket 10 through the first shell 16, and the fixing bracket 10 is located on the bottom side of the first shell 16 and is provided with a work button 30 through the second shell 31.

[0027] Furthermore, an anti-skid pad is provided on the bottom side of the base 3 , and the bottom of the anti-skid pad is densely covered with anti-skid grooves. A reinforcement seat 9 is connected and surrounded on the outside of the fixing frame 10 on the bottom plate 8 .

[0028] Furthermore, the output end of the stepper motor 26 is connected to a reducer 4 , and the end of the reducer 4 is connected to the first synchronous wheel 25 via a coupling 21 .

[0029] Operation steps: When the specimen needs to be subjected to a tensile test, the specimen is fixed vertically by the upper fixture and the lower fixture 20, and the stepper motor 26 is driven. The stepper motor 26 drives the rotating shaft to rotate, and then the rotating shaft drives the first synchronous wheel 21 to rotate, and the first synchronous wheel 21 drives the synchronous belt to rotate, and the synchronous belt drives the second synchronous wheel to rotate, thereby driving the two ball screws 12 to rotate, and the ball screw 12 drives the threaded seat 17 to move, and then the threaded seat 17 drives the moving platform 18 to rise, and the moving platform 18 drives the upper fixture to move upward, and the specimen is gradually stretched, and tensile fatigue damage is formed on the surface of the specimen. In this process, the force data is directly read by the force sensor 15, thereby ensuring the continuity of the force data transmission, and at the same time, the metal magnetic memory The detection probe 14 reads the metal magnetic memory signal generated when the specimen is stretched, greatly increasing the diversity of experiments and greatly improving scientific research efficiency and data detection accuracy. The first rotating motor 35 drives the non-standard connector 33 designed by the team to rotate, so that the metal magnetic memory detection probe 22, connector 33 and probe fixture 27 can rotate 360 degrees. The drive motor 36 and the second rotating motor 41 are installed at the connection between the upper arm 37 and the lower arm 39, and the lower arm 39 and the fixture 42. Through the connection between the slider 24 and the slide rail 23, it can be accurately moved to the part of the test specimen to be tested, and the magnetic field changes at the surface fatigue damage can be analyzed, thereby realizing online monitoring of the degree of tensile fatigue damage. This greatly increases the diversity of experiments and greatly improves scientific research efficiency.

[0030] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A tensile testing machine capable of online monitoring, characterized in that: It includes a base (3), a first profile (1) and a second profile (2) symmetrically arranged on the base (3). A bottom plate (8) is commonly connected to the top sides of the first profile (1) and the second profile (2). Fixing frames (10) are symmetrically arranged on the bottom plate (8). A cover plate (19) is commonly connected to the top sides of the two fixing frames (10). A moving pedestal (18) is connected to the bottom plate (8) through a lifting member. The bottom of the moving pedestal (18) is connected to an upper clamp through a force sensor (15). A lower clamp (20) cooperating with the upper clamp is arranged on the bottom plate (8) through a stretching gripper (13). A magnetic memory module (14) is horizontally arranged on the fixing frame (10); The magnetic memory module (14) includes a slide rail (23) arranged on the fixing frame (10). A slider (24) is slidably connected to the slide rail (23). A second rotating motor (41) is connected to the slider (24) through a connector. The output end of the second rotating motor (41) is rotatably connected to a lower arm (39). The side of the lower arm (39) away from the second rotating motor (41) is hinged to an upper arm (37). The end of the upper arm (37) is connected to a C-shaped frame (34) through a first rotating motor (35). A connecting member (33) is arranged on the outer side of the C-shaped frame (34). A metal magnetic memory detection probe (22) is connected to the connecting member (33) through a probe clamp (27). First support arms (40) and second support arms (38) are respectively arranged on the inner sides of the upper arm (37) and the lower arm (39).

2. The tensile testing machine capable of online monitoring according to claim 1, characterized in that: The lifting member includes ball screws (12) symmetrically and rotatably connected between the cover plate (19) and the bottom plate (8). A threaded seat (17) is threadedly connected to the ball screws (12). The two threaded seats (17) are arranged on the bottom side of the moving pedestal (18). The bottom of one of the ball screws (12) is connected to a driving member.

3. The tensile testing machine capable of online monitoring according to claim 2, characterized in that: The driving member includes a mounting frame (7) fixedly connected to the base (3). A stepping motor (26) is arranged on the mounting frame (7). The output end of the stepping motor (26) is coaxially connected to a rotating shaft. A first synchronous pulley (25) is arranged at the end of the rotating shaft. The first synchronous pulley (25) is connected to the ball screw (12). A synchronous belt is sleeved outside the first synchronous pulley (25). The other side of the synchronous belt is provided with a second synchronous pulley connected to the other ball screw (12).

4. The tensile testing machine capable of online monitoring according to claim 1, characterized in that: A power supply (5) and a controller (6) electrically connected to the stepping motor (26) are installed on the base (3).

5. The tensile testing machine capable of online monitoring according to claim 1, characterized in that: An emergency stop button (29) is connected to the outer side of the fixing frame (10) through a first outer shell (16). A working feed button (30) is arranged on the fixing frame (10) at the bottom side of the first outer shell (16) through a second outer shell (31).

6. The tensile testing machine capable of online monitoring according to claim 1, characterized in that: Anti-slip pads are arranged on the bottom side of the base (3). Anti-slip lines are densely arranged on the bottom of the anti-slip pads.

7. The tensile testing machine capable of online monitoring according to claim 1, characterized in that: A reinforcing base (9) is surrounded and connected to the outer side of the fixing frame (10) on the bottom plate (8).

8. The tensile testing machine capable of online monitoring according to claim 3, characterized in that: The output end of the stepper motor (26) is connected to a reducer (4), and the end of the reducer (4) is connected to the first synchronous wheel (25) through a coupling (21).

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