Special tool clamp device for full-automatic metal Charpy impact sample

Abstract

The utility model discloses a special tool clamp device for a full-automatic metal Charpy impact sample, which relates to the technical field of material detection, and is characterized in that when the special tool clamp device is used, the sample is placed on the upper surface of a sliding seat and is attached to the surfaces of two bosses of a countermeasure seat, and when a pendulum bob impacts, the sample is broken, so that the sample is not damaged. The residual kinetic energy of the pendulum bob impacts the surface of the buffer pad, meanwhile, the force unloading seat slides in the groove, the force unloading seat presses the first piston through the jacking column, the first piston presses liquid in the piston cylinder into the secondary energy absorption chamber through the bent pipe, and the second piston is driven to press the spring, so that the spring greatly buffers the instant impact force, and the impact force is reduced. Meanwhile, the hydraulic cylinder slides on one side of the frame plate during impact, so that the length of the tension spring pulled by the hydraulic cylinder is changed, kinetic energy of the pendulum bob can be absorbed, direct hard contact is avoided, large impact force can be absorbed and buffered through the structure, meanwhile, it can be guaranteed that the whole is not affected by impact, and good sample positioning precision is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of material detection, in particular to a full-automatic tooling fixture device special for metal Charpy impact specimens. Background Art

[0002] Metal Charpy impact specimen is a standardized specimen commonly used to evaluate the toughness of metal materials. The specimen shape usually used is a standardized "V" notch specimen. This specimen has a certain length, width and thickness, in which a "V" notch with a standardized geometry is cut in the center of the specimen. The geometric dimensions and notch dimensions of the specimen are usually specified in relevant standards to ensure the comparability and accuracy of the test.

[0003] Before conducting a Charpy impact test, the specimen must first be prepared, usually by metal cutting or EDM to ensure that the specimen geometry and surface quality meet the standard requirements. After preparation, the specimen will be placed on the support fixture on the testing machine to ensure the stability of the specimen during the test.

[0004] During the test, the specimen is subjected to a certain impact load, usually generated by the free fall of a pendulum with standardized shape and size. The impact load acts on the notch of the specimen, causing the specimen to break instantly. During the test, the absorbed energy before and after the specimen breaks and the fracture morphology of the specimen are recorded to evaluate the toughness and impact resistance of the material.

[0005] In the test of metal Charpy impact specimens, the kinetic energy of the pendulum is often not completely consumed after the specimen breaks. Traditional specimen fixtures are often designed with an impact structure on one side. However, this requires a relatively strong structural strength. If there is a large impact, the noise caused is relatively large. At the same time, there is no efficient force unloading structure for the impact force, which can easily cause damage to the fixture or loss of precision.

[0006] In view of this, the present utility model is proposed. Utility Model Content

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0008] A fully automatic metal Charpy impact specimen special fixture device comprises a base, an upper surface of the base is fixedly connected with an antagonist seat, an inner wall of the antagonist seat is fitted and slidably provided with a slide seat, the slide seat is fitted and arranged on the upper surface of the base, and an energy absorber for impact force buffering is fixedly penetrated on one side of the slide seat;

[0009] The surface of the slide is fixedly connected with a frame plate, the frame plate penetrates and is fixed on the surface of the energy absorber, the inner wall of the base is penetrated with an adjustment component for adjusting the horizontal sliding of the slide, one end of the energy absorber is fixedly connected with a force unloading seat, the force unloading seat fits and slides on the surface of the slide;

[0010] The surface of the counter seat is fixedly connected with two pin seats, the inner wall of the pin seat is movably connected with a calibration piece, and the upper surface of the counter seat is also embedded with two magnets;

[0011] The energy absorber comprises:

[0012] Piston cylinder;

[0013] The piston cylinder penetrates and slides on one side of the frame plate, and the piston cylinder is arranged in close contact with the inner wall of the sliding seat;

[0014] First piston;

[0015] Top column;

[0016] The first piston is fitted and slid on the inner wall of the piston cylinder, one side of the first piston is fixedly connected to a top column, and the other end of the top column is fixedly connected to one side of the force unloading seat;

[0017] Extension spring;

[0018] The two ends of the tension spring are respectively fixed on the surface of the piston cylinder and the frame plate;

[0019] Secondary energy absorption chamber;

[0020] Second piston;

[0021] The secondary energy absorption chamber is arranged at one end of the piston cylinder, and a curved pipe is connected between the secondary energy absorption chamber and the piston cylinder;

[0022] The second piston slides in close contact with the inner wall of the secondary energy absorption chamber, and a spring is provided between the bottom of the secondary energy absorption chamber and the second piston.

[0023] Preferably, the adjustment assembly comprises a sliding hole extending through one side of the base, a plurality of rotating members are fixedly connected in the sliding hole, and a threaded column is rotatably passed through the inner walls of the plurality of rotating members;

[0024] The surface thread of the threaded column is matched with a threaded barrel, the threaded barrel is slidably arranged on the inner wall of the sliding hole, one end of the threaded barrel is fixedly connected to the surface of the frame plate, and one end of the threaded column is fixedly connected to a torsion block.

[0025] Preferably, a constant pressure valve for air flow is provided on the lower surface of the secondary energy absorption chamber.

[0026] Preferably, a groove is provided on the inner wall of the sliding seat, and the force unloading seat is limitedly slidable on the inner wall of the groove.

[0027] Preferably, the surface of the counter seat is provided with two bosses for supporting the sample, and the bosses are arranged on one side of the magnet.

[0028] Preferably, a buffer pad is fixedly connected to one side of the force unloading seat, and the buffer pad slides on the inner wall of the groove.

[0029] Preferably, fixing ears for mounting the base are provided at the four corners of the lower surface of the base.

[0030] Preferably, two positioning rods are fixedly connected to one side of the base, and the two positioning rods penetrate and slide on the surface of the frame plate.

[0031] Preferably, a loading platform is fixedly connected to one side of the force unloading seat, and the loading platform is slidably arranged on the inner wall of the antagonistic seat.

[0032] Preferably, the upper surface of the calibration piece is arranged with a multi-level gradient, and the gradient height is adapted to different sample model standards.

[0033] Beneficial effects:

[0034] When the present invention is in use, as the sample is placed on the upper surface of the slide seat, it is fitted on the two boss surfaces of the antagonist seat. When the pendulum strikes, as the sample breaks, the remaining kinetic energy of the pendulum strikes the surface of the buffer pad, and then the unloading seat moves horizontally with the loading platform, and the unloading seat slides in the groove. At this time, the unloading seat presses the first piston through the top column, and the first piston presses the liquid in the piston cylinder into the secondary energy absorption chamber through the bend, and compresses the spring with the second piston, so that it can greatly buffer the instantaneous impact force, and convert the kinetic energy into heat energy with the transmission of the liquid. At the same time, the hydraulic cylinder slides on one side of the frame plate when impacting, so that the length of the pulling spring changes, which can absorb the kinetic energy of the pendulum and avoid direct hard contact. This structure can not only absorb and buffer large impact forces, but also ensure that the whole will not be affected by the impact, thereby ensuring good sample positioning accuracy.

[0035] This solution also separates the antagonist seat from the slide seat, so that the antagonist seat only needs to bear the impact force of the sample. At the same time, the slide seat buffers the remaining kinetic energy of the pendulum through the force unloading seat sliding on the surface. During this process, when the sample is measured, the antagonist seat will not be subjected to force, which greatly reduces the use intensity of the antagonist seat and improves the accuracy and stability of long-term use.

[0036] When placing the sample, the sample is placed on the upper surface of the slide so that one side of the sample is attached to the surfaces of the two bosses under the action of the magnet, and then the two calibration parts are pushed. After the two calibration parts are merged, the gradient effect of the inner wall pushes the two ends of the sample of the corresponding model so that the sample is evenly located on the surfaces of the two bosses and fits. This allows for rapid calibration and ensures test accuracy.

[0037] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In the attached picture:

[0039] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0040] Figure 2 It is a three-dimensional structural schematic diagram of the present invention from another viewing angle;

[0041] Figure 3 It is a schematic diagram of the explosion structure of the present invention;

[0042] Figure 4 It is a schematic structural diagram of the cross section of the energy absorber of the present invention;

[0043] Figure 5 It is a schematic diagram of the cross-sectional structure of the base of the present invention.

[0044] In the figure: 1. base; 2. antagonist seat; 3. slide seat; 4. adjustment assembly; 41. slide hole; 42. threaded cylinder; 43. threaded column; 44. torsion block; 45. rotating part; 5. energy absorber; 51. piston cylinder; 52. first piston; 53. top column; 54. bent pipe; 55. secondary energy absorption chamber; 56. second piston; 57. spring; 58. tension spring; 6. shelf; 7. positioning rod; 8. force unloading seat; 9. boss; 10. buffer pad; 11. magnet; 12. groove; 13. calibration piece; 14. pin seat; 15. fixing ear; 16. loading platform. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0046] like Figures 1 to 5 As shown, a fully automatic metal Charpy impact specimen special fixture device comprises a base 1, an upper surface of the base 1 is fixedly connected to an antagonist seat 2, an inner wall of the antagonist seat 2 is fitted and slidably provided with a slide seat 3, the slide seat 3 is fitted and arranged on the upper surface of the base 1, and an energy absorber 5 for impact force buffering is fixedly penetrated on one side of the slide seat 3;

[0047] The surface of the slide 3 is fixedly connected with a frame plate 6, and the frame plate 6 penetrates and is fixed on the surface of the energy absorber 5. The inner wall of the base 1 is penetrated with an adjustment component 4 for adjusting the horizontal sliding of the slide 3. One end of the energy absorber 5 is fixedly connected with a force unloading seat 8, and the force unloading seat 8 slides in contact with the surface of the slide 3.

[0048] The surface of the counter seat 2 is fixedly connected with two pin seats 14, the inner wall of the pin seat 14 is movably connected with a calibration piece 13, and the upper surface of the counter seat 2 is also embedded with two magnets 11;

[0049] The energy absorber 5 comprises:

[0050] Piston cylinder 51;

[0051] The piston cylinder 51 penetrates and slides on one side of the frame plate 6, and the piston cylinder 51 is arranged in close contact with the inner wall of the slide seat 3;

[0052] A first piston 52;

[0053] Top column 53;

[0054] The first piston 52 slides in close contact with the inner wall of the piston cylinder 51, and a top column 53 is fixedly connected to one side of the first piston 52, and the other end of the top column 53 is fixedly connected to one side of the force unloading seat 8;

[0055] Extension spring 58;

[0056] The two ends of the tension spring 58 are respectively fixed to the surface of the piston cylinder 51 and the frame plate 6;

[0057] Secondary energy absorption chamber 55;

[0058] A second piston 56;

[0059] The secondary energy absorption chamber 55 is disposed at one end of the piston cylinder 51, and a curved pipe 54 is connected between the secondary energy absorption chamber 55 and the piston cylinder 51;

[0060] The second piston 56 is slidably fitted on the inner wall of the secondary energy absorption chamber 55 , and a spring 57 is provided between the bottom of the secondary energy absorption chamber 55 and the second piston 56 .

[0061] This scheme includes a base 1, an antagonist seat 2, a slide 3, a frame 6, an adjustment assembly 4, an energy absorber 5, a force unloading seat 8 and other components. During the test, the sample is placed on the slide 3 and fits with the two bosses 9. The position of the sample is adjusted by the calibration part 13. When the pendulum hits the sample, the force unloading seat 8 drives the stage 16 to move horizontally, and at the same time presses the first piston 52, converting kinetic energy into heat energy through the hydraulic cylinder to achieve a buffering effect. The position of the force unloading seat 8 can be adjusted by adjusting the torsion block 44 and the threaded barrel 42 to meet different test requirements. The entire device is exquisitely designed, can effectively carry out metal Charpy impact tests, and provide accurate and reliable test data.

[0062] Specifically, Figure 1 As shown: the adjustment assembly 4 includes a sliding hole 41 penetrating through one side of the base 1, a plurality of rotating members 45 are fixedly connected in the sliding hole 41, and a threaded column 43 is rotatably penetrated through the inner walls of the plurality of rotating members 45;

[0063] The threaded column 43 is threadedly matched with a threaded barrel 42 , which is slidably arranged on the inner wall of the sliding hole 41 , one end of the threaded barrel 42 is fixedly connected to the surface of the frame plate 6 , and one end of the threaded column 43 is fixedly connected to a torsion block 44 .

[0064] The adjustment assembly 4 is an important component of the fully automatic metal Charpy impact specimen special fixture device, which is used to adjust the horizontal sliding of the slide 3 to ensure the stability and accuracy of the specimen during the test. The cooperation between the threaded column 43 and the threaded barrel 42 can provide a good support effect on the frame plate 6 and facilitate the adjustment of the position of the frame plate 6.

[0065] Specifically, Figure 4 As shown: the lower surface of the secondary energy absorption chamber 55 is provided with a constant pressure valve for air flow.

[0066] The constant pressure valve can maintain the displacement of gas in the piston bottom space with the external space when the second piston 56 on the inner wall of the secondary energy absorption chamber 55 moves, maintain a stable air pressure balance, and at the same time play a certain energy consumption role.

[0067] Specifically, Figure 1 As shown: the inner wall of the slide seat 3 is provided with a groove 12, and the unloading seat 8 is limitedly slid on the inner wall of the groove 12. The groove 12 can limit the limit seat to maintain a stable limited sliding state.

[0068] Specifically, Figure 5 As shown: the surface of the counter seat 2 is provided with two bosses 9 for supporting the sample, and the bosses 9 are arranged on one side of the magnet 11.

[0069] The boss 9 can support the sample and reduce the contact area between the sample and the counter seat 2, thereby improving the safety of the impact fracture process.

[0070] Specifically, Figure 3 As shown: a buffer pad 10 is fixedly connected to one side of the unloading seat 8, and the buffer pad 10 is located on the inner wall of the groove 12 and slides.

[0071] The buffer pad 10 is arranged at one side of the unloading seat 8, and the pendulum can contact the buffer pad 10 in the groove 12, which can play a certain buffering effect and avoid direct collision between metals.

[0072] Specifically, Figure 2 As shown: fixing ears 15 for mounting the base 1 are provided at the four corners of the lower surface of the base 1 .

[0073] The fixing ears 15 can be used to fix the base 1 at a fixed position, so that the entire fixture can be fixed on the surface of the test equipment.

[0074] Specifically, Figure 2 As shown: two positioning rods 7 are fixedly connected to one side of the base 1 , and the two positioning rods 7 penetrate and slide on the surface of the frame plate 6 together.

[0075] The positioning rod 7 can support the frame plate 6 and maintain its strength when the frame plate 6 moves, thereby improving the force effect of the frame plate 6 at one end of the threaded tube 42 .

[0076] Specifically, Figure 5 As shown: a loading platform 16 is fixedly connected to one side of the unloading seat 8, and the loading platform 16 is arranged to be slidable on the inner wall of the counteracting seat 2.

[0077] The loading platform 16 is fixed on one side of the force unloading seat 8 and can receive the sample that is broken by impact to prevent it from falling.

[0078] Specifically, Figure 1 As shown: the upper surface of the calibration piece 13 is arranged in a multi-level gradient, and the gradient height is adapted to different sample model standards.

[0079] By setting the calibration piece 13, the calibration piece 13 can be adapted to the specifications of various samples through a multi-level gradient design, and can promote calibration thereof.

[0080] When placing the sample, the sample is placed on the upper surface of the slide 3 so that one side of the sample is attached to the surfaces of the two bosses 9 under the action of the magnet 11, and then the two calibration pieces 13 are pushed. After the two calibration pieces 13 are combined, the two ends of the sample of the corresponding model are pushed through the gradient effect of the inner wall, so that the sample is evenly located on the surfaces of the two bosses 9 and fits. When the pendulum strikes, as the sample breaks, the remaining kinetic energy of the pendulum strikes the surface of the buffer pad 10, and then the unloading seat 8 moves horizontally with the stage 16, and the unloading seat 8 slides in the groove 12. At this time, the unloading seat 8 presses the first piston 52 through the top column 53, and the first piston 52 presses the liquid in the piston cylinder 51 into the secondary energy absorption chamber 55 through the bend 54, and presses the spring 57 with the second piston 56, so that it can greatly buffer the instantaneous impact force, and convert the kinetic energy into heat energy with the transmission of the liquid. At the same time, the hydraulic cylinder slides on one side of the frame plate 6 when striking, so that the length of the pulling spring 58 changes, which can absorb the kinetic energy of the pendulum.

[0081] At the same time, when necessary, the torsion block 44 can be rotated by a wrench, and the torsion block 44 rotates with the threaded column 43. Then, the threaded column 43 can cooperate with the thread of the threaded tube 42 to slide the threaded tube 42 on the inner wall of the sliding hole 41 when rotating. When the slide tube moves, the position of the frame plate 6 changes. The frame plate 6 moves with the slide seat 3 and the unloading seat 8 at the same time. At this time, it is possible to adjust whether the unloading seat 8 is located on the boss 9 in the same plane or in a horizontal position. The adjustment control can be staggered, and the position where the pendulum impact trajectory is cut off can be adjusted according to the measurement needs.

[0082] 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fully automatic metal Charpy impact specimen special fixture device, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected with an antagonist seat (2), the inner wall of the antagonist seat (2) is fitted with a sliding seat (3), the sliding seat (3) is arranged to fit the upper surface of the base (1), and an energy absorber (5) for impact force buffering is fixedly penetrated on one side of the sliding seat (3); The surface of the slide seat (3) is fixedly connected with a frame plate (6), and the frame plate (6) is fixedly connected to the surface of the energy absorber (5). The inner wall of the base (1) is provided with an adjustment component (4) for adjusting the horizontal sliding of the slide seat (3). One end of the energy absorber (5) is fixedly connected with a force unloading seat (8), and the force unloading seat (8) is slidably attached to the surface of the slide seat (3). Two pin seats (14) are fixedly connected to the surface of the antagonist seat (2), a calibration piece (13) is movably connected to the inner wall of the pin seat (14), and two magnets (11) are also embedded on the upper surface of the antagonist seat (2); The energy absorber (5) comprises: Piston cylinder (51); The piston cylinder (51) penetrates and slides on one side of the frame plate (6), and the piston cylinder (51) is arranged in close contact with the inner wall of the slide seat (3); A first piston (52); Top column (53); The first piston (52) slides in close contact with the inner wall of the piston cylinder (51), one side of the first piston (52) is fixedly connected to a top column (53), and the other end of the top column (53) is fixedly connected to one side of the force unloading seat (8); Extension spring (58); The two ends of the tension spring (58) are respectively fixed on the surface of the piston cylinder (51) and the frame plate (6); Secondary energy absorption chamber (55); A second piston (56); The secondary energy absorption chamber (55) is arranged at one end of the piston cylinder (51), and a curved pipe (54) is connected between the secondary energy absorption chamber (55) and the piston cylinder (51); The second piston (56) slides in close contact with the inner wall of the secondary energy absorption chamber (55), and a spring (57) is provided between the bottom of the secondary energy absorption chamber (55) and the second piston (56).

2. The fully automatic metal Charpy impact specimen special fixture device according to claim 1 is characterized in that: The adjustment assembly (4) comprises a sliding hole (41) penetrating and opened on one side of the base (1), a plurality of rotating members (45) are fixedly connected in the sliding hole (41), and a threaded column (43) is rotatably penetrated through the inner walls of the plurality of rotating members (45); The surface of the threaded column (43) is threadedly matched with a threaded barrel (42), the threaded barrel (42) is slidably arranged on the inner wall of the sliding hole (41), one end of the threaded barrel (42) is fixedly connected to the surface of the frame plate (6), and one end of the threaded column (43) is fixedly connected to a torsion block (44).

3. The fully automatic metal Charpy impact specimen special fixture device according to claim 1, characterized in that: A constant pressure valve for air flow is provided on the lower surface of the secondary energy absorbing chamber (55).

4. The fully automatic metal Charpy impact specimen special fixture device according to claim 1, characterized in that: The inner wall of the sliding seat (3) is provided with a groove (12), and the force unloading seat (8) is limitedly slidable on the inner wall of the groove (12).

5. The fully automatic metal Charpy impact specimen special fixture device according to claim 1, characterized in that: The surface of the counter seat (2) is provided with two bosses (9) for supporting the sample, and the bosses (9) are arranged on one side of the magnet (11).

6. The fully automatic metal Charpy impact specimen special fixture device according to claim 4, characterized in that: A buffer pad (10) is fixedly connected to one side of the force unloading seat (8), and the buffer pad (10) is located on the inner wall of the groove (12) and slides.

7. The fully automatic metal Charpy impact specimen special fixture device according to claim 1, characterized in that: Fixing ears (15) for mounting the base (1) are provided at the four corners of the lower surface of the base (1).

8. The fully automatic metal Charpy impact specimen special fixture device according to claim 1, characterized in that: Two positioning rods (7) are fixedly connected to one side of the base (1), and the two positioning rods (7) penetrate and slide on the surface of the frame plate (6).

9. The fully automatic metal Charpy impact specimen special fixture device according to claim 1, characterized in that: One side of the force unloading seat (8) is fixedly connected to a loading platform (16), and the loading platform (16) is arranged to slide on the inner wall of the counter seat (2).

10. The fully automatic metal Charpy impact specimen special fixture device according to claim 1, characterized in that: The upper surface of the calibration piece (13) is arranged in a multi-level gradient, and the gradient height is adapted to different sample model standards.

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