Device for metal material bending test

Abstract

The utility model relates to the technical field of metal material tests, and discloses a metal material bending test device which comprises a base, a mounting frame is fixedly connected to the upper end of the base, a hydraulic cylinder is fixedly connected to the middle of the mounting frame, and a mounting block is arranged at the output end of the hydraulic cylinder. First sliding rods are fixedly connected to the periphery of the upper end of the mounting block, the outer surfaces of the four first sliding rods are slidably connected with the two sides of the two sides of the mounting frame correspondingly, placing frames are fixedly connected to the two sides of the upper end of the base, and a mounting mechanism is arranged in the mounting block. When the bending test device is used for bending tests in different forms, the bending plate can be replaced more conveniently, compared with an existing device which adopts a bolt and other connection methods, the bending test device is higher in efficiency during replacement, the replacement steps are simpler, and the use convenience of the bending test device is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of metal material testing technology, and in particular to a device for metal material bending test. Background Technology

[0002] The bending test is a test to determine the mechanical properties of a material under bending load. It is one of the basic methods for testing the mechanical properties of materials. The bending test is mainly used to determine the bending strength of brittle and low-plasticity materials (such as cast iron, high carbon steel, tool steel, etc.) and can reflect the deflection index of plasticity. The bending test can also be used to check the surface quality of materials.

[0003] A search revealed that Chinese Patent Publication No. CN220552695U discloses an easily adjustable metal material bending test fixture, relating to the field of metal material testing technology. It solves the problem that in current bending tests on metal materials, the material easily falls off when the bending test device is pressed down, and the testing process is particularly unstable due to wobbling during adjustment of the test device. The fixture includes a test base with a column support fixedly installed on its top. A connecting plate is fixedly sleeved between two column support rods. Two movable sleeve rods are movably sleeved inside the connecting plate, and a bending plate is fixedly connected to the bottom of the two movable sleeve rods. This device allows for stable adjustment of the support distance according to the actual length of the metal material, increasing its smoothness of movement and enabling precise positioning and clamping of the metal material placed on top of the plate, preventing it from rolling off during the bending test.

[0004] However, in the existing technology, when conducting bending tests on metal materials, the metal material is usually placed on a test bench, and then pressure is applied to the metal material by a downward bending plate to make it bend. However, the bending plate of the existing device is usually fixedly connected or bolted to the output end of the hydraulic cylinder. When conducting bending tests of different shapes, the replacement of the bending plate is complicated and cannot achieve quick replacement of the bending plate, making the device inconvenient to use. A solution is proposed to solve the problems mentioned in the background technology. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a device for bending tests of metal materials. It aims to improve the problem that in the conventional method of bending tests on metal materials, the metal material is usually placed on a test platform and then pressure is applied to the metal material by a downward bending plate to make it bend. However, the bending plate of the existing device is usually fixedly connected or bolted to the output end of the hydraulic cylinder. When performing bending tests of different shapes, the replacement of the bending plate is complicated and cannot achieve quick replacement of the bending plate, resulting in inconvenience in the use of the device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: it includes a base, an upper end of which is fixedly connected to a mounting frame, a middle part of which is fixedly connected to a hydraulic cylinder, an output end of which is provided with a mounting block, and four sliding rods fixedly connected to the upper end of the mounting block. The outer surfaces of the four sliding rods are slidably connected to the two sides of the mounting frame, and a placement frame is fixedly connected to the two sides of the upper end of the base. An installation mechanism is provided inside the mounting block.

[0007] As a further description of the above technical solution: by turning the knob, the rotating rod is driven to rotate, which in turn drives the first bevel gear to rotate, which in turn drives the second bevel gear meshing with it to rotate. The rotating second bevel gear drives the drive screw to rotate, and the rotating drive screw drives the locking rod threadedly connected to it to slide inside the mounting block, so that the end of the locking rod is pulled out of the slot at the upper end of the bending plate. Then the bending plate can be pulled down to remove it.

[0008] Preferably, the mounting mechanism includes a rotating rod, the outer surface of which is rotatably connected to the interior of the mounting block, one end of which is fixedly connected to a bevel gear, and two snap-fit ​​grooves are provided on both sides of the lower end of the mounting block. A locking rod is slidably connected to one side of each of the two snap-fit ​​grooves, and a knob is fixedly connected to the other end of the rotating rod.

[0009] As a further description of the above technical solution: the rotating rod can drive the first bevel gear to rotate after rotation, thereby driving the second bevel gear meshing with it to rotate.

[0010] Preferably, both sides of the mounting block are rotatably connected to drive screws, the outer surfaces of the two drive screws are respectively threaded to the inner threads of the two locking rods, one end of each of the two drive screws is fixedly connected to a second bevel gear, the outer surfaces of the two second bevel gears respectively mesh with the outer surface of the first bevel gear, the lower end of the mounting block is clamped to a bending plate, and the outer surfaces of the two locking rods are respectively clamped to the two sides of the upper end of the bending plate.

[0011] As a further description of the above technical solution: the second bevel gear can drive the drive screw to rotate after rotation, thereby controlling the locking rod to move, so that the end of the locking rod is pulled out or inserted into the slot of the bending plate.

[0012] Preferably, protective covers are slidably connected to both sides of the upper end of the base, and one side of each of the two protective covers is fixedly connected to a tempered glass panel.

[0013] As a further description of the above technical solution: the protective cover can protect the area around the device during testing, preventing debris from flying during metal material testing from injuring the test personnel.

[0014] Preferably, the lower ends of the two protective covers are fixedly connected to a sliding frame, and the middle of the lower end of the base is rotatably connected to a bidirectional lead screw.

[0015] As a further description of the above technical solution: the bidirectional lead screw can drive the sliding frame to move after rotation, thereby driving the protective cover fixedly connected to it to move.

[0016] Preferably, the middle portions of the two sliding frames are threadedly connected to the outer surface of the bidirectional lead screw, and a motor is fixedly connected to one side of the base.

[0017] As a further description of the above technical solution: the motor can be used to provide power for the rotation of the bidirectional lead screw.

[0018] Preferably, the output end of the motor is fixedly connected to one end of the bidirectional lead screw, and two slide rods are fixedly connected to both sides of the lower end of the base.

[0019] As a further description of the above technical solution: the second slide bar can make the movement of its sliding frame more stable.

[0020] Preferably, the outer surfaces of the two second slide rods are slidably connected to the two sides of the two slide frames, respectively.

[0021] As a further description of the above technical solution: the second slide rail can limit the movement trajectory of the sliding frame, making its movement more stable.

[0022] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0023] In this invention, the replacement of the bending plate is more convenient when the device is subjected to bending tests of different shapes. Compared with the existing device which uses bolts and other connection methods, the replacement is more efficient and the replacement steps are simpler, effectively improving the convenience of the device when it is used. Attached Figure Description

[0024] Figure 1This is a perspective view of a device for testing the bending of metallic materials according to the present invention;

[0025] Figure 2 This is a three-dimensional structural cross-sectional view of the mounting block portion in a device for testing the bending of metallic materials according to this utility model.

[0026] Figure 3 This is a three-dimensional structural diagram of the bending plate section in a device for testing bending metal materials according to this utility model;

[0027] Figure 4 This is a bottom-view three-dimensional structural diagram of a device for testing the bending of metal materials proposed in this utility model.

[0028] Legend:

[0029] 1. Base; 2. Placement rack; 3. Bending plate; 4. Tempered glass for viewing; 5. Protective cover; 6. Hydraulic cylinder; 7. No. 1 slide rod; 8. Mounting block; 9. Mounting bracket; 10. Snap-fit ​​groove; 11. Locking rod; 12. Drive screw; 13. No. 2 bevel gear; 14. No. 1 bevel gear; 15. Rotating rod; 16. Knob; 17. Two-way screw; 18. No. 2 slide rod; 19. Sliding frame; 20. Motor. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1 to 3As shown, one embodiment of this utility model includes a base 1, with a mounting frame 9 fixedly connected to the upper end of the base 1. A hydraulic cylinder 6 is fixedly connected to the middle of the mounting frame 9, and a mounting block 8 is provided at the output end of the hydraulic cylinder 6. Four sliding rods 7 are fixedly connected to the four sides of the upper end of the mounting block 8. The outer surfaces of the four sliding rods 7 are slidably connected to the two sides of the mounting frame 9. Placement racks 2 are fixedly connected to both sides of the upper end of the base 1. A mounting mechanism is provided inside the mounting block 8, including a rotating rod 15. The outer surface of the rotating rod 15 is rotatably connected to the interior of the mounting block 8, and a bevel gear 1 is fixedly connected to one end of the rotating rod 15. 4. The mounting block 8 has two snap-fit ​​grooves 10 on both sides of its lower end. One side of each snap-fit ​​groove 10 is slidably connected to a locking rod 11. The other end of the rotating rod 15 is fixedly connected to a knob 16. The two sides inside the mounting block 8 are rotatably connected to drive screws 12. The outer surfaces of the two drive screws 12 are respectively threaded to the inner threads of the two locking rods 11. One end of each drive screw 12 is fixedly connected to a second bevel gear 13. The outer surfaces of the two second bevel gears 13 respectively mesh with the outer surfaces of the first bevel gear 14. The lower end of the mounting block 8 is snapped with a bending plate 3. The outer surfaces of the two locking rods 11 are snapped with the two sides of the upper end of the bending plate 3 respectively.

[0032] In this embodiment, when the bending plate 3 needs to be replaced, the rotating rod 15 can be rotated by turning the knob 16. The rotating rod 15 can drive the first bevel gear 14 to rotate, which in turn drives the second bevel gear 13 to rotate. The rotating second bevel gear 13 can drive the drive screw 12 to rotate, and the rotating drive screw 12 can drive the locking rod 11, which is threaded to it, to slide inside the mounting block 8. This allows the end of the locking rod 11 to be pulled out of the slot at the upper end of the bending plate 3. Then, the bending plate 3 can be pulled down to remove it. After that, the bending plate 3 of the required specifications can be snapped on, and then the knob 16 can be turned in the opposite direction to control the end of the locking rod 11 to be reinserted into the slot of the bending plate 3 to complete the reinstallation. This method makes the replacement of the bending plate more convenient when the device is subjected to bending tests of different shapes. Compared with the existing device that uses bolts and other connection methods, the replacement work is more efficient and the replacement steps are simpler, effectively improving the convenience of the device during use.

[0033] Example 2, as Figure 1 and Figure 4As shown, protective covers 5 are slidably connected to both sides of the upper end of the base 1. One side of each of the two protective covers 5 is fixedly connected to a tempered glass 4. The lower ends of the two protective covers 5 are fixedly connected to a sliding frame 19. A bidirectional lead screw 17 is rotatably connected to the middle of the lower end of the base 1. The middle parts of the two sliding frames 19 are threadedly connected to the outer surface of the bidirectional lead screw 17. A motor 20 is fixedly connected to one side of the base 1. The output end of the motor 20 is fixedly connected to one end of the bidirectional lead screw 17. Two slide rods 18 are fixedly connected to both sides of the lower end of the base 1. The outer surfaces of the two slide rods 18 are slidably connected to the two sides of the two sliding frames 19 respectively.

[0034] In this embodiment, when the device is undergoing a bending test, the bidirectional lead screw 17 can be rotated by starting the motor 20. The bidirectional lead screw 17 drives the sliding frame 19 to move, thereby controlling the movement of the two protective covers 5 above. The protective covers 5 can then converge with each other, protecting the device from the surrounding area. This prevents the flying debris from injuring the test personnel when the device is bending metal materials, thus improving the safety of the device during use.

[0035] Working principle: When using the device, the metal material to be tested is fixed on the placement rack 2, then the protective cover 5 is closed, and the hydraulic cylinder 6 is activated to push the bending plate 3 to bend the metal material. When the bending plate 3 needs to be replaced, the rotating rod 15 can be rotated by turning the knob 16. The rotating rod 15 drives the first bevel gear 14 to rotate, which in turn drives the second bevel gear 13 to rotate. The rotating second bevel gear 13 drives the drive screw 12 to rotate, which drives the locking rod 11, which is threaded to it, to slide inside the mounting block 8. This causes the end of the locking rod 11 to be pulled out of the slot at the upper end of the bending plate 3. Then, the bending plate 3 can be pulled down to remove it. After that, the bending plate 3 of the required specifications is snapped on, and then the knob 16 is turned in the opposite direction to control the locking rod. The reinstallation work can be completed by re-inserting the end of 11 into the slot of the bending plate 3. This method makes it more convenient to replace the bending plate when the device is subjected to bending tests of different shapes. Compared with the existing device which uses bolts and other connection methods, the replacement work is more efficient and the replacement steps are simpler, which effectively improves the convenience of the device. At the same time, the bidirectional lead screw 17 can be driven to rotate by starting the motor 20. The bidirectional lead screw 17 drives the sliding frame 19 to move, thereby controlling the movement of the two protective covers 5 above. The protective covers 5 can be brought together. The gathered protective covers 5 protect the surroundings of the device. When the device is bending metal materials, the flying debris can be blocked, avoiding the flying debris from injuring the test personnel, thus making the device safer to use.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for bending tests of metallic materials, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly connected to a mounting frame (9), the middle part of the mounting frame (9) is fixedly connected to a hydraulic cylinder (6), the output end of the hydraulic cylinder (6) is provided with a mounting block (8), the four sides of the upper end of the mounting block (8) are fixedly connected to a first slide rod (7), the outer surfaces of the four first slide rods (7) are respectively slidably connected to the two sides of the mounting frame (9), the two sides of the upper end of the base (1) are fixedly connected to a placement frame (2), and the mounting block (8) is provided with an installation mechanism inside.

2. The apparatus for bending tests of metallic materials according to claim 1, characterized in that: The mounting mechanism includes a rotating rod (15), the outer surface of which is rotatably connected to the interior of the mounting block (8). One end of the rotating rod (15) is fixedly connected to a bevel gear (14). The mounting block (8) has two snap-fit ​​grooves (10) on both sides of its lower end. One side of each of the two snap-fit ​​grooves (10) is slidably connected to a locking rod (11). The other end of the rotating rod (15) is fixedly connected to a knob (16).

3. The apparatus for bending tests of metallic materials according to claim 2, characterized in that: The mounting block (8) is rotatably connected to two sides of the interior, and the outer surfaces of the two driving screws (12) are respectively threaded to the interior of the two locking rods (11). One end of each of the two driving screws (12) is fixedly connected to a second bevel gear (13). The outer surfaces of the two second bevel gears (13) mesh with the outer surfaces of the first bevel gear (14). The lower end of the mounting block (8) is clamped with a bending plate (3), and the outer surfaces of the two locking rods (11) are respectively clamped to the two sides of the upper end of the bending plate (3).

4. The apparatus for bending tests of metallic materials according to claim 1, characterized in that: The base (1) has protective covers (5) slidably connected to both sides of its upper end, and one side of each of the two protective covers (5) is fixedly connected to a tempered glass (4).

5. The apparatus for bending tests of metallic materials according to claim 4, characterized in that: The lower ends of the two protective covers (5) are fixedly connected to sliding frames (19), and the middle of the lower end of the base (1) is rotatably connected to a two-way lead screw (17).

6. The apparatus for bending tests of metallic materials according to claim 5, characterized in that: The middle parts of the two sliding frames (19) are respectively threaded to the outer surface of the bidirectional lead screw (17), and a motor (20) is fixedly connected to one side of the base (1).

7. The apparatus for bending tests of metallic materials according to claim 6, characterized in that: The output end of the motor (20) is fixedly connected to one end of the bidirectional lead screw (17), and the two sides of the lower end of the base (1) are fixedly connected to the second slide rod (18).

8. The apparatus for bending tests of metallic materials according to claim 7, characterized in that: The outer surfaces of the two second slide rods (18) are slidably connected to the two sides of the two slide frames (19).

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