Bending test device and test system

Abstract

The utility model relates to a bending test device and a test system, the bending test device comprises a base, a main shaft unit, a main clamping unit, a bending die and an auxiliary clamping unit, the test device realizes automatic clamping and locking of a sample by matching a main clamping block and an auxiliary clamping block which are driven by a driving source with an elbow, the operation is simple, the efficiency is high, and the reliability is good; in the sample bending process, the main clamping block and the elbow synchronously rotate and are matched with the dynamic compensation of the auxiliary clamping block, so that the bending deformation of the sample is concentrated in a preset bending area, the deformation of positions outside the preset bending area is reduced, and the accuracy of a test result is facilitated; meanwhile, parameters such as the bending speed and the bending angle can be rapidly set and adjusted by controlling all the driving sources, good universality and adaptability are achieved, and the requirements of all industries and fields for material bending performance testing can be met.

Description

Technical Field

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

[0002] Bending tests are experimental methods for determining the mechanical properties of materials under bending loads. They are primarily used to evaluate the strength, toughness, and resistance to deformation of materials. Bending tests provide in-depth understanding of material performance characteristics, offering important reference information for engineering design and material selection.

[0003] Existing bending test devices mostly adopt the three-point bending test mode, which can only apply force at a limited number of loading points. It is difficult to fully simulate the bending stress state of materials under complex actual working conditions. In addition, existing bending test devices are cumbersome to operate, have low experimental efficiency, and cannot quickly switch between different experimental parameters. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the fact that the existing bending test devices mostly adopt the three-point bending test mode, which can only apply force at a limited number of loading points, making it difficult to fully simulate the bending stress state of materials under complex actual working conditions. In addition, the existing bending test devices are relatively cumbersome to operate, have low experimental efficiency, and cannot quickly switch different experimental parameters.

[0005] To solve the above-mentioned technical problems, this utility model provides a bending test device, comprising,

[0006] Base;

[0007] A spindle unit includes a spindle and a first drive source. The spindle is arranged along the Z-axis and rotatably connected to the base. A gear is coaxially arranged on the spindle. The first drive source is arranged along the X-axis on the base. The output end of the first drive source is connected to a rack that meshes with the gear.

[0008] The main clamping unit includes a rotating table, a first connecting seat, and a main clamping block. One end of the rotating table is connected to the main shaft. The first connecting seat is slidably disposed on the rotating table along the Y-axis direction. The first connecting seat is connected to a second driving source for driving its sliding, and the main clamping block is connected to the first connecting seat.

[0009] A bending die includes a connecting plate and an elbow. The connecting plate is disposed on the rotating table, and the elbow is a cubic structure with a circular arc surface processed at one end. The elbow is connected to the connecting plate, and the center of the circular arc surface is coaxial with the axis of the main shaft.

[0010] The auxiliary clamping unit includes a fixed platform, a second connecting seat, a slide, and an auxiliary clamping block. The fixed platform is connected to the base. The second connecting seat is slidably disposed on the fixed platform along the Y-axis direction. The second connecting seat is connected to a third driving source for driving its sliding. The slide is slidably connected to the second connecting seat along the X-axis direction and is connected to a fourth driving source for driving its sliding. The auxiliary clamping block is connected to the slide.

[0011] In one embodiment of this utility model, a first slide rail extending along the Y-axis is provided on the rotating platform, a first support seat is slidably disposed on the first slide rail, the first support seat is connected to the second drive source, and a first connecting seat and a first adjusting seat arranged at intervals along the Y-axis are provided on the first support seat, wherein the first connecting seat is slidably connected to the first support seat and is located on the side close to the main shaft, the first adjusting seat is fixedly connected to the first support seat, and a first bolt extending along the Y-axis is threadedly connected to the first adjusting seat, one end of the first bolt is connected to the first adjusting seat.

[0012] In one embodiment of this utility model, a second slide rail extending along the Y-axis is provided on the fixed platform, a second support seat is slidably provided on the second slide rail, the second support seat is connected to the third drive source, and a second connecting seat and a second adjusting seat are provided on the second support seat at intervals along the Y-axis. The second connecting seat is slidably connected to the second support seat and is located on the side close to the main shaft. The second adjusting seat is fixedly connected to the second support seat, and a second bolt extending along the Y-axis is threadedly connected to the second adjusting seat. One end of the second bolt is connected to the second adjusting seat.

[0013] In one embodiment of this utility model, the fourth drive source is provided with a limiting block for limiting the movement range of the slide.

[0014] In one embodiment of this utility model, the connecting plate and the elbow are integrally formed. The connecting plate is a circular plate with multiple connecting holes arranged in a circular array around its circumference. The connecting plate is connected to the rotating table at the connecting holes by multiple fasteners.

[0015] In one embodiment of the present invention, a controller is further included, which is connected to the first driving source, the second driving source, the third driving source and the fourth driving source respectively.

[0016] In one embodiment of the present invention, a pressure wheel is rotatably disposed on the base on the side of the rack away from the gear, and the circumferential surface of the pressure wheel presses tightly against the side surface of the rack.

[0017] In one embodiment of this utility model, both the main clamping block and the auxiliary clamping block are cuboid structures.

[0018] In one embodiment of this utility model, the first driving source, the second driving source, the third driving source and the fourth driving source are all hydraulic cylinders.

[0019] A testing system comprising a bending testing apparatus as described in any of the preceding claims.

[0020] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0021] The bending test device and system described in this utility model automatically clamps and locks the sample by using a main clamp and an auxiliary clamp driven by a drive source in conjunction with an elbow. This method is simple, efficient, and reliable. Furthermore, during the bending process, the synchronous rotation of the main clamp and elbow, combined with dynamic compensation from the auxiliary clamp, concentrates the bending deformation of the sample within a predetermined bending area, reducing deformation outside this area and improving the accuracy of the test results. Simultaneously, the control of each drive source allows for rapid setting and adjustment of parameters such as bending speed and bending angle, demonstrating good versatility and adaptability to meet the needs of various industries and fields for testing the bending performance of materials. Attached Figure Description

[0022] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the main shaft unit of the bending test device according to a preferred embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of the bending test device according to a preferred embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram showing the relative positions of the main clamping unit and the auxiliary clamping unit in standby mode of the bending test device according to a preferred embodiment of this utility model.

[0026] Figure 4 This is a schematic diagram of the bending test device of the preferred embodiment of the present invention when bending a specimen;

[0027] Figure 5 This is a schematic diagram of the structure of the limiting block of the bending test device according to a preferred embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram showing the position of the clamping wheel of the bending test device according to a preferred embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the bending mold of the bending test device according to a preferred embodiment of the present invention.

[0030] Explanation of reference numerals in the accompanying drawings: 1. Base; 2. Main spindle unit; 21. Main spindle; 22. First drive source; 23. Gear; 24. Rack; 3. Main clamping unit; 31. Rotating table; 32. First connecting seat; 33. Main clamping block; 34. Second drive source; 35. First adjusting seat; 36. First bolt; 4. Bending die; 41. Connecting plate; 42. Elbow; 421. Arc surface; 5. Auxiliary clamping unit; 51. Fixed table; 52. Second connecting seat; 53. Slide; 54. Auxiliary clamping block; 55. Third drive source; 56. Fourth drive source; 57. Second adjusting seat; 58. Second bolt; 59. Limiting block; 6. Pressure wheel. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0032] Example 1: Refer to Figures 1-7 As shown, a bending test device of this utility model includes,

[0033] Base 1;

[0034] The main spindle unit 2 includes a main spindle 21 and a first drive source 22. The main spindle 21 is arranged along the Z-axis and rotatably connected to the base 1. A gear 23 is coaxially arranged on the main spindle 21. The first drive source 22 is arranged along the X-axis on the base 1. The output end of the first drive source 22 is connected to a rack 24 that meshes with the gear 23.

[0035] The main clamping unit 3 includes a rotating table 31, a first connecting seat 32 and a main clamping block 33. One end of the rotating table 31 is connected to the main shaft 21. The first connecting seat 32 is slidably disposed on the rotating table 31 along the Y-axis direction. The first connecting seat 32 is connected to a second driving source 34 for driving its sliding, and the main clamping block 33 is connected to the first connecting seat 32.

[0036] The bending die 4 includes a connecting plate 41 and an elbow 42. The connecting plate 41 is set on the rotating table 31. The elbow 42 is a cubic structure with a circular arc surface 421 machined at one end. The elbow 42 is connected to the connecting plate 41, and the center of the circular arc surface 421 is coaxial with the axis of the main shaft 21.

[0037] The auxiliary clamping unit 5 includes a fixed platform 51, a second connecting seat 52, a slide 53, and an auxiliary clamping block 54. The fixed platform 51 is connected to the base 1. The second connecting seat 52 is slidably disposed on the fixed platform 51 along the Y-axis direction. The second connecting seat 52 is connected to a third driving source 55 for driving its sliding. The slide 53 is slidably connected to the second connecting seat 52 along the X-axis direction and is connected to a fourth driving source 56 for driving its sliding. The auxiliary clamping block 54 is connected to the slide 53.

[0038] Specifically, in the initial state, the end faces of the free ends of the main clamping block 33 and the auxiliary clamping block 54 are parallel and parallel to the side of the elbow 42. During the bending test, the second drive source 34 and the third drive source 55 drive the first connecting seat 32 and the second connecting seat 52 to slide towards the side closer to the elbow 42, until the sample placed between the elbow 42, the main clamping block 33 and the auxiliary clamping block 54 is clamped. At this time, the end faces of the free ends of the main clamping block 33 and the auxiliary clamping block 54 are flush, and one end of the test is clamped mainly by the main clamping block 33 and the side of the elbow 42, while the auxiliary clamping block 54 presses the other end of the sample. Then, the first drive source 22 passes through the meshing rack 24 The gear 23 drives the main shaft 21 to rotate at a predetermined speed. The rotating main shaft 21 drives the bending mold 4 and the rotating table 31 to rotate synchronously. During the synchronous rotation of the main clamping block 33 and the elbow 42 on the rotating table 31, the sample plate clamped between the two bends around the arc surface 421 of the elbow 42 at a preset bending speed. When the bending reaches the predetermined angle, the first drive source 22 stops. At the same time, during the bending process, the fourth drive source 56 drives the slide block 53 to slide the auxiliary clamping block 54 towards the elbow 42 side for dynamic compensation, so as to avoid the sample slipping between the auxiliary clamping block 54 during the bending process and ensure the accuracy of the test results.

[0039] This utility model discloses a bending test device that uses a main clamping block 33 and an auxiliary clamping block 54 driven by a drive source to automatically clamp and lock the sample in conjunction with an elbow 42. The device is simple to operate, efficient, and reliable. During the bending process, the main clamping block 33 and the elbow 42 rotate synchronously, with dynamic compensation from the auxiliary clamping block 54, concentrating the bending deformation of the sample within a predetermined bending area and reducing deformation outside this area, thus improving the accuracy of the test results. Furthermore, by controlling each drive source, parameters such as bending speed and bending angle can be quickly adjusted, demonstrating good versatility and adaptability, and meeting the needs of various industries and fields for testing the bending performance of materials.

[0040] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the rotary table 31 is further provided with a first slide rail extending along the Y-axis direction. A first support seat is slidably provided on the first slide rail. The first support seat is connected to the second drive source 34. The first support seat is provided with a first connecting seat 32 and a first adjusting seat 35 arranged at intervals along the Y-axis direction. The first connecting seat 32 is slidably connected to the first support seat and is located on the side close to the main shaft 21. The first adjusting seat 35 is fixedly connected to the first support seat. A first bolt 36 extending along the Y-axis direction is threadedly connected to the first adjusting seat 35. One end of the first bolt 36 is connected to the first adjusting seat 35.

[0041] Furthermore, a second slide rail extending along the Y-axis is provided on the fixed platform 51. A second support seat is slidably mounted on the second slide rail. The second support seat is connected to the third drive source 55. The second support seat is provided with second connecting seats 52 and second adjusting seats 57 arranged at intervals along the Y-axis. The second connecting seats 52 are slidably connected to the second support seat and located on the side closer to the main shaft 21. The second adjusting seats 57 are fixedly connected to the second support seat, and a second bolt 58 extending along the Y-axis is threaded onto the second adjusting seats 57. One end of the second bolt 58 is connected to the second adjusting seats 57. Specifically, the positions of the first connecting seats 32 and 52 can be finely adjusted by adjusting the first bolt 36 and the second bolt 58, so as to adjust the relative positions of the main clamping block 33 and the auxiliary clamping block 54. Specifically, T-slots matching the shape of the bolt heads of the first bolt 36 or the second bolt 58 can be formed on the first connecting seats 32 and 52 to facilitate the connection of the first bolt 36 and the second bolt 58 with the first connecting seats 32 and the second connecting seats 52.

[0042] Furthermore, the fourth drive source 56 is provided with a limiting block 59 for limiting the movement range of the slide 53. Specifically, a limiting block 59 is provided on the housing of the fourth drive source 56, and the limiting block 59 is located on the movement path of the slide 53, thereby limiting the maximum movement range of the slide 53 at this end.

[0043] Reference Figure 7 As shown, the connecting plate 41 and the elbow 42 are integrally formed. The connecting plate 41 is a circular plate with multiple connecting holes arranged in a circular array around its circumference. The connecting plate 41 is connected to the rotating table 31 at the connecting holes by multiple fasteners. During the bending test, the bending mold 4 of the elbow 42 with different bending radii is replaced.

[0044] Furthermore, it also includes a controller, which is connected to the first drive source 22, the second drive source 34, the third drive source 55, and the fourth drive source 56, respectively. The controller enables automatic control of each drive source.

[0045] Furthermore, a pressure wheel 6 is rotatably disposed on the base 1 on the side of the rack 24 away from the gear 23, and the circumferential surface of the pressure wheel 6 presses tightly against the side of the rack 24.

[0046] Furthermore, both the main clamping block 33 and the auxiliary clamping block 54 are cuboid structures. Each of the main clamping block 33 and the auxiliary clamping block 54 has a slot on one side, which allows them to be connected to the clamping blocks on the first connecting seat 32 and the second connecting seat 52. This makes installation and disassembly convenient and facilitates later maintenance.

[0047] Furthermore, the first drive source 22, the second drive source 34, the third drive source 55 and the fourth drive source 56 all adopt hydraulic cylinders.

[0048] Example 2: This utility model also discloses a testing system, including the bending testing device as in Example 1.

[0049] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A bending test apparatus, characterized in that: include, Base; A spindle unit includes a spindle and a first drive source. The spindle is arranged along the Z-axis and rotatably connected to the base. A gear is coaxially arranged on the spindle. The first drive source is arranged along the X-axis on the base. The output end of the first drive source is connected to a rack that meshes with the gear. The main clamping unit includes a rotating table, a first connecting seat, and a main clamping block. One end of the rotating table is connected to the main shaft. The first connecting seat is slidably disposed on the rotating table along the Y-axis direction. The first connecting seat is connected to a second driving source for driving its sliding, and the main clamping block is connected to the first connecting seat. A bending die includes a connecting plate and an elbow. The connecting plate is disposed on the rotating table, and the elbow is a cubic structure with a circular arc surface processed at one end. The elbow is connected to the connecting plate, and the center of the circular arc surface is coaxial with the axis of the main shaft. The auxiliary clamping unit includes a fixed platform, a second connecting seat, a slide, and an auxiliary clamping block. The fixed platform is connected to the base. The second connecting seat is slidably disposed on the fixed platform along the Y-axis direction. The second connecting seat is connected to a third driving source for driving its sliding. The slide is slidably connected to the second connecting seat along the X-axis direction and is connected to a fourth driving source for driving its sliding. The auxiliary clamping block is connected to the slide.

2. The bending test apparatus according to claim 1, characterized in that: The rotating platform is provided with a first slide rail extending along the Y-axis. A first support seat is slidably disposed on the first slide rail. The first support seat is connected to the second drive source. The first support seat is provided with a first connecting seat and a first adjusting seat arranged at intervals along the Y-axis. The first connecting seat is slidably connected to the first support seat and is located on the side close to the main shaft. The first adjusting seat is fixedly connected to the first support seat, and a first bolt extending along the Y-axis is threadedly connected to the first adjusting seat. One end of the first bolt is connected to the first adjusting seat.

3. The bending test apparatus according to claim 1, characterized in that: The fixed platform is provided with a second slide rail extending along the Y-axis. A second support seat is slidably mounted on the second slide rail. The second support seat is connected to the third drive source. The second support seat is provided with a second connecting seat and a second adjusting seat arranged at intervals along the Y-axis. The second connecting seat is slidably connected to the second support seat and is located on the side close to the main shaft. The second adjusting seat is fixedly connected to the second support seat, and a second bolt extending along the Y-axis is threaded onto the second adjusting seat. One end of the second bolt is connected to the second adjusting seat.

4. The bending test apparatus according to claim 1, characterized in that: The fourth drive source is provided with a limiting block for limiting the range of motion of the slide.

5. The bending test apparatus according to claim 1, characterized in that: The connecting plate and the elbow are integrally formed. The connecting plate is a circular plate with multiple connecting holes arranged in a circular array around its circumference. The connecting plate is connected to the rotating table at the connecting holes by multiple fasteners.

6. The bending test apparatus according to claim 1, characterized in that: It also includes a controller, which is connected to the first drive source, the second drive source, the third drive source and the fourth drive source respectively.

7. The bending test apparatus according to claim 1, characterized in that: A pressure wheel is rotatably mounted on the base, located on the side of the rack away from the gear, and the circumferential surface of the pressure wheel presses tightly against the side surface of the rack.

8. The bending test apparatus according to claim 1, characterized in that: Both the main clamping block and the auxiliary clamping block are rectangular parallelepiped structures.

9. The bending test apparatus according to claim 1, characterized in that: The first drive source, the second drive source, the third drive source, and the fourth drive source all use hydraulic cylinders.

10. A testing system, characterized in that: Includes the bending test apparatus as described in any one of claims 1-9.

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