Universal tool and device for aluminum alloy plate bending experiment

Abstract

The utility model discloses a universal tool and device for an aluminum alloy plate bending experiment, a fixed positioning table of the universal tool for the aluminum alloy plate bending experiment is fixedly arranged on a tool base, and the position of a movable positioning table on the tool base can be adjusted through a translation control assembly; the relative position between the fixed positioning table and the movable positioning table is changed, so that the bending test bench can be simultaneously suitable for common bending tests, three-electric bending tests and bending tests meeting VDA standards, and the universality is good; moreover, the first supporting roller and the second supporting roller are used for supporting and guiding the sample piece, the stability is good, traditional sliding friction is improved into rolling friction, and the stability when the sample piece deforms is improved; besides, by additionally arranging a material returning plate, the sample piece can be upwards retreated between the first supporting roller and the second supporting roller by easily reversing the first supporting roller and the second supporting roller, so that the universal tool for the aluminum alloy plate bending experiment is prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the technical field of bending test devices, specifically to a general tooling and device for bending tests of aluminum alloy plates. Background Technology

[0002] To obtain the performance parameters of aluminum alloy sheets, a series of experiments are required. Among them, the ordinary bending test, the three-electric bending test, and the bending test that meets the VDA standard are necessary experiments to verify the bending or folding performance of aluminum alloy sheets.

[0003] Please refer to Chinese Utility Model Patent Publication No. CN217688346U. Existing bending test fixtures suffer from poor versatility due to structural design issues. Because the two positioning platforms used to position the test sample are fixedly installed and their positions cannot be adjusted, they are only suitable for one or two complete tests. Furthermore, after the sample is bent, it often becomes stuck between the two positioning platforms, requiring forced retraction to remove it, which easily damages the platforms.

[0004] Solving these problems is now a top priority. Utility Model Content

[0005] In view of this, the present invention provides a general tooling and device for bending tests of aluminum alloy plates.

[0006] The technical solution is as follows:

[0007] The first aspect of this application relates to a universal fixture for bending tests of aluminum alloy sheets, including a fixture base and a fixed positioning stage fixedly mounted on the fixture base. A movable positioning stage is mounted on the fixture base and can move closer to or further away from the fixed positioning stage under the action of a translation control component. A first support roller extending horizontally is rotatably mounted on the fixed positioning stage, the rotation axis of which is perpendicular to the translation direction of the movable positioning stage. A second support roller parallel to the first support roller is rotatably mounted on the movable positioning stage. The first and second support rollers have the same diameter and mounting height. At least one of the first and second support rollers has a tangential ejector plate on its outer circumferential surface, extending towards the position between the first and second support rollers.

[0008] The above-mentioned universal fixture for aluminum alloy sheet bending tests uses a fixed positioning stage fixedly mounted on the fixture base. The movable positioning stage can be adjusted on the fixture base via a translation control component, thereby changing the relative position between the fixed and movable positioning stages. This allows the universal fixture for aluminum alloy sheet bending tests to be suitable for ordinary pressure bending tests, three-electric bending tests, and bending tests meeting VDA standards, demonstrating good versatility. Furthermore, the use of first and second support rollers to support and guide the sample not only provides good stability but also improves the stability of the sample during deformation by replacing traditional sliding friction with rolling friction. In addition, by adding a ejector plate, the sample can be easily ejected upwards between the first and second support rollers by reversing them, thus preventing any damage to the universal fixture for aluminum alloy sheet bending tests and extending its service life.

[0009] In some embodiments, an angle measuring plate extending along its outer circumferential surface is synchronously mounted on the first support roller. The angle measuring plate has scale lines for measuring the rotation angle of the first support roller. A zero-positioning plate is mounted on the upper end of the angle measuring plate, and a zero-positioning groove adapted to the zero-positioning plate is recessed on the upper end surface of the fixed positioning platform.

[0010] When the zero-position positioning plate rotates downwards until it abuts against the bottom of the zero-position positioning groove, the zero-position positioning plate is in a horizontal state.

[0011] In some embodiments, the angle measuring plate is mounted at the middle position of the first support roller, and the zero-position positioning plate extends from one end near the second support roller to form the ejector plate.

[0012] In some embodiments, the top of the fixed positioning platform is provided with a first fixed boss and a first movable boss located at both ends of the first support roller. The first fixed boss is integrally formed on the top surface of the fixed positioning platform, and the first movable boss can be slidably mounted on the top surface of the fixed positioning platform, either close to or far away from it. The end of the first fixed boss close to the first movable boss is provided with a first positioning groove adjacent to the first support roller, and the end of the first movable boss close to the first fixed boss is provided with a second positioning groove adjacent to the first support roller.

[0013] The top of the movable positioning platform is provided with a second fixed boss and a second movable boss located at both ends of the second support roller. The second fixed boss is integrally formed on the top surface of the movable positioning platform. The second movable boss can be slidably mounted on the top surface of the movable positioning platform, either close to or far away from it. The end of the second fixed boss close to the second movable boss is provided with a third positioning groove adjacent to the second support roller. The end of the second movable boss close to the second fixed boss is provided with a fourth positioning groove adjacent to the second support roller.

[0014] In some embodiments, the top surface of the fixed positioning platform is provided with a first sliding groove parallel to the first support roller. The groove opening of the first sliding groove has a first bolt locking plate extending from the two side groove walls toward the middle position. A first bolt guide slot is formed between the two first bolt locking plates. At least two first bolts that slide in cooperation with the first bolt guide slot are installed on the first movable boss. After each first bolt passes downward through the first bolt guide slot, it can be locked onto the two first bolt locking plates by a first nut that matches it.

[0015] The top surface of the movable positioning platform is provided with a second sliding groove parallel to the second support roller. The groove opening of the second sliding groove has a second bolt locking plate extending from the two side groove walls toward the middle position. A second bolt guide slot is formed between the two second bolt locking plates. At least two second bolts that slide in cooperation with the second bolt guide slot are installed on the second movable boss. After each second bolt passes downward through the second bolt guide slot, it can be locked onto the two second bolt locking plates by a second nut that matches it.

[0016] In some embodiments, the translation control assembly includes a screw mounting base mounted on a tooling base and an adjusting screw rotatably mounted on the screw mounting base in a horizontal direction. The screw mounting base is located on the side of the movable positioning platform away from the fixed positioning platform. The rotation axis of the adjusting screw is perpendicular to the rotation axis of the second support roller. The adjusting screw and the movable positioning platform form a lead screw and nut kinematic pair.

[0017] The second aspect of this application relates to a general apparatus for bending tests of aluminum alloy sheets, including a press and the aforementioned general tooling for bending tests of aluminum alloy sheets. The press head is located above the first support roller and the second support roller, and a bending cutter extending downward is installed at the bottom of the press head. The first support roller and the second support roller are arranged opposite to each other on both sides of the bending cutter.

[0018] The above-mentioned general-purpose device for bending tests of aluminum alloy plates possesses all the advantages of the aforementioned general-purpose tooling for bending tests of aluminum alloy plates.

[0019] In some embodiments, the bottom surface of the pressure head is recessed to form a quick-change groove with a "T"-shaped cross-section, and the top of the bending cutter has a quick-change connector that is adapted to the quick-change groove. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of a general-purpose tooling for bending tests of aluminum alloy sheets when positioning the aluminum alloy sheets;

[0021] Figure 2 A schematic diagram of the structure of a general-purpose tooling for bending tests of aluminum alloy sheets when used to position and bend aluminum alloy sheets.

[0022] Figure 3 A schematic diagram showing the fit between a general-purpose tooling for bending tests of aluminum alloy sheets and a tooling for positioning aluminum alloy sheets;

[0023] Figure 4 A schematic diagram showing the fit between a general-purpose tooling for bending aluminum alloy sheets and the sheet material during bending and positioning.

[0024] Figure 5 A schematic diagram of the general apparatus for bending aluminum alloy sheets before bending the aluminum alloy sheet.

[0025] Figure 6 This is a schematic diagram of a general-purpose apparatus for bending aluminum alloy sheets during the bending process. Detailed Implementation

[0026] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0027] Example 1:

[0028] like Figures 1-4 As shown, a universal fixture for bending tests of aluminum alloy sheets mainly includes a fixture base 1 and a fixed positioning platform 2 and a movable positioning platform 4, both mounted on the fixture base 1. The fixed positioning platform 2 is fixedly mounted on the fixture base 1, and the movable positioning platform 4 is slidably mounted on the fixture base 1. Specifically, the movable positioning platform 4 can move closer to or further away from the fixed positioning platform 2 under the action of the translation control component 3, thereby adjusting the relative position between the fixed positioning platform 2 and the movable positioning platform 4. Thus, this universal fixture for bending tests of aluminum alloy sheets can be used simultaneously for ordinary pressure bending tests, three-electric bending tests, and bending tests that meet VDA standards, demonstrating good versatility.

[0029] A first support roller 5 extending horizontally is rotatably mounted on the fixed positioning platform 2. The rotation axis of the first support roller 5 is perpendicular to the translation direction of the movable positioning platform 4. A second support roller 6 parallel to the first support roller 5 is rotatably mounted on the movable positioning platform 4. In this embodiment, both the first support roller 5 and the second support roller 6 are cylindrical structures and are respectively mounted on the top of the fixed positioning platform 2 and the movable positioning platform 4 on the side close to each other to avoid interference with the sample 11.

[0030] Furthermore, the first support roller 5 and the second support roller 6 not only have the same external dimensions, but also the same installation height. Therefore, the sample 11 can be placed smoothly on top of the second support roller 6, which is parallel to the first support roller 5, in the horizontal direction. Using the first support roller 5 and the second support roller 6 to support and guide the sample 11 not only provides good stability, but also improves the stability of the sample 11 when it deforms by changing the traditional sliding friction to rolling friction.

[0031] At least one of the first support roller 5 and the second support roller 6 has a stripper plate 7a tangential to its outer circumferential surface, extending towards the position between the first support roller 5 and the second support roller 6. When the first support roller 5 or the second support roller 6 with the stripper plate 7a installed reverses, the sample 11 can be pushed upward by the stripper plate 7a, allowing it to easily separate from the first support roller 5 and the second support roller 6, thus preventing any damage to the universal tooling for bending aluminum alloy sheets and extending the service life of the universal tooling for bending aluminum alloy sheets.

[0032] Furthermore, an angle measuring plate 8 extending along its outer circumference is synchronously mounted on the first support roller 5. The angle measuring plate 8 has scale lines for measuring the rotation angle of the first support roller 5. A zero-positioning plate 7 is mounted on the upper end of the angle measuring plate 8. A zero-positioning groove 2c that matches the zero-positioning plate 7 is recessed on the upper end surface of the fixed positioning platform 2.

[0033] Specifically, when the zero-positioning plate 7 rotates downwards until it abuts against the bottom of the zero-positioning groove 2c, the zero-positioning plate 7 is in a horizontal state, indicating that the sample 11 is not bent or folded. When the angle measuring plate 8 drives the zero-positioning plate 7 to rotate upwards, the scale line at the bottom of the zero-positioning groove 2c indicates the current bending or folding angle of the sample 11. Therefore, the above structure can accurately reflect the bending or folding angle of the sample 11 and is easy to operate. At the same time, the plate-like structure of the zero-positioning plate 7 can also provide auxiliary positioning and support for the sample 11, improving reliability.

[0034] Furthermore, the angle measuring plate 8 is installed at the middle position of the first support roller 5, thereby providing reliable measurement and support for samples 11 of different sizes. At the same time, the zero-positioning plate 7 extends from one end near the second support roller 6 to form the ejector plate 7a, so that the zero-positioning plate 7 integrates two functions, simplifies the overall structure, and reduces manufacturing costs and assembly difficulty.

[0035] Please see Figure 1 and Figure 3Since the sample 11 is generally rectangular, the top of the fixed positioning platform 2 is provided with a first fixed boss 2a and a first movable boss 2b located at both ends of the first support roller 5. The first fixed boss 2a is integrally formed on the top surface of the fixed positioning platform 2, and the first movable boss 2b can be slidably installed on the top surface of the fixed positioning platform 2, close to or away from it. The end of the first fixed boss 2a close to the first movable boss 2b is provided with a first positioning notch 2a1 adjacent to the first support roller 5, and the end of the first movable boss 2b close to the first fixed boss 2a is provided with a second positioning notch 2b1 adjacent to the first support roller 5. Similarly, the top of the movable positioning platform 4 is provided with a second fixed boss 4a and a second movable boss 4b located at both ends of the second support roller 6. The second fixed boss 4a is integrally formed on the top surface of the movable positioning platform 4, and the second movable boss 4b can be slidably mounted on the top surface of the movable positioning platform 4, either close to or far from it. The end of the second fixed boss 4a near the second movable boss 4b is provided with a third positioning notch 4a1 adjacent to the second support roller 6, and the end of the second movable boss 4b near the second fixed boss 4a is provided with a fourth positioning notch 4b1 adjacent to the second support roller 6. Therefore, by adjusting the position of the movable positioning platform 4 and the positions of the first movable boss 2b and the second movable boss 4b, the four corners of the sample 11 to be tested can be reliably confined within the first positioning notch 2a1, the second positioning notch 2b1, the third positioning notch 4a1, and the fourth positioning notch 4b1, respectively, thus ensuring the accuracy of subsequent experiments.

[0036] Please see Figure 2 , Figure 5 and Figure 6 The top surface of the fixed positioning platform 2 is provided with a first sliding groove 2d parallel to the first support roller 5. The groove opening of the first sliding groove 2d has first bolt locking plates 2d1 extending from the two side groove walls toward the middle position. A first bolt guide slot 2d2 is formed between the two first bolt locking plates 2d1. At least two first bolts 2e are installed on the first movable boss 2b, which slide in cooperation with the first bolt guide slot 2d2. Each first bolt 2e passes downward through the first bolt guide slot 2d2 and can be locked onto the two first bolt locking plates 2d1 by a first nut 2f that matches it. Therefore, when each first bolt 2e is tightened, each first bolt 2e and the corresponding first nut 2f clamp the first movable boss 2b and the two first bolt locking plates 2d1 between them, thereby locking the first movable boss 2b and preventing it from sliding. When each first bolt 2e is loosened, the position of the first movable boss 2b can be flexibly adjusted, which is simple and reliable.

[0037] Similarly, the top surface of the movable positioning platform 4 is provided with a second sliding groove 4d parallel to the second support roller 6. The groove opening of the second sliding groove 4d has second bolt locking plates 4d1 extending from the two side groove walls toward the middle position. A second bolt guide slot 4d2 is formed between the two second bolt locking plates 4d1. At least two second bolts 4e are installed on the second movable boss 4b, which slide in cooperation with the second bolt guide slot 4d2. Each second bolt 4e passes downward through the second bolt guide slot 4d2 and can be locked onto the two second bolt locking plates 4d1 by a matching second nut 4f. Therefore, when each second bolt 4e is tightened, each second bolt 4e and the corresponding second nut 4f clamp the second movable boss 4b and the two second bolt locking plates 4d1 between them, thereby locking the second movable boss 4b and preventing it from sliding. When each second bolt 4e is loosened, the position of the second movable boss 4b can be flexibly adjusted, which is simple and reliable.

[0038] Please see Figure 1 The translation control assembly 3 includes a screw mounting seat 3a mounted on the tooling base 1 and an adjusting screw 3b rotatably mounted on the screw mounting seat 3a in the horizontal direction. The screw mounting seat 3a is located on the side of the movable positioning table 4 away from the fixed positioning table 2. The rotation axis of the adjusting screw 3b is perpendicular to the rotation axis of the second support roller 6. The adjusting screw 3b and the movable positioning table 4 form a screw and nut motion pair. Therefore, by rotating the adjusting screw 3b forward or backward, the movable positioning table 4 can be moved closer to or further away from the fixed positioning table 2.

[0039] In this embodiment, the end of the adjusting screw 3b away from the movable positioning stage 4 has a connecting structure 3b1. The connecting structure 3b1 is a hexagonal prism structure or a flat square structure, so as to facilitate connection with a special tool, thereby easily rotating the adjusting screw 3b.

[0040] Furthermore, a first mounting groove adapted to the first support roller 5 is recessed on the top side of the fixed positioning platform 2 near the movable positioning platform 4. The two ends of the first support roller 5 are respectively mounted on the corresponding ends of the first mounting groove via bearings, which is simple and reliable. Similarly, a second mounting groove adapted to the second support roller 6 is recessed on the top side of the movable positioning platform 4 near the fixed positioning platform 2. The two ends of the second support roller 6 are respectively mounted on the corresponding ends of the second mounting groove via bearings, which is simple and reliable.

[0041] Example 2:

[0042] Please see Figure 5 and Figure 6A general-purpose apparatus for bending aluminum alloy sheets includes a press 9 and the general-purpose tooling for bending aluminum alloy sheets as described in Example 1. The press head 9a of the press 9 is located above the first support roller 5 and the second support roller 6. A bending cutter 10 extending downward is installed at the bottom of the press head 9a. The first support roller 5 and the second support roller 6 are arranged opposite each other on both sides of the bending cutter 10. The press 9 drives the bending cutter 10 to bend the sample 11 through the press head 9a, which is stable and reliable.

[0043] Furthermore, the bottom surface of the pressure head 9a is recessed to form a quick-change groove 9a1 with a "T" shaped cross-section, and the top of the bending cutter 10 has a quick-change connector 10a that matches the quick-change groove 9a1. The quick-change connector 10a is also a "T" shaped structure, so that the corresponding bending cutter 10 can be quickly replaced according to the test requirements of ordinary pressure bending test, three-electric bending test and bending test that meets VDA standard, thereby further improving versatility.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A universal fixture for bending tests of aluminum alloy sheets, comprising a fixture base (1) and a fixed positioning stage (2) fixedly mounted on the fixture base (1), characterized in that: The tooling base (1) is equipped with a movable positioning platform (4) that can move closer to or further away from the fixed positioning platform (2) under the drive of the translation control component (3). The fixed positioning platform (2) is rotatably equipped with a first support roller (5) that extends in the horizontal direction. The rotation axis of the first support roller (5) is perpendicular to the translation direction of the movable positioning platform (4). The movable positioning platform (4) is rotatably equipped with a second support roller (6) that is parallel to the first support roller (5). The diameter and installation height of the first support roller (5) and the second support roller (6) are the same. At least one of the first support roller (5) and the second support roller (6) has a material ejector plate (7a) that is tangent to it on its outer peripheral surface. The material ejector plate (7a) extends toward the position between the first support roller (5) and the second support roller (6).

2. The universal tooling for bending tests of aluminum alloy plates according to claim 1, characterized in that: An angle measuring plate (8) extending along its outer circumference is synchronously mounted on the first support roller (5). The angle measuring plate (8) has scale lines for measuring the rotation angle of the first support roller (5). A zero positioning plate (7) is mounted on the upper end of the angle measuring plate (8). A zero positioning groove (2c) that matches the zero positioning plate (7) is recessed on the upper end surface of the fixed positioning platform (2). When the zero-position positioning plate (7) rotates downwards to abut against the bottom of the zero-position positioning groove (2c), the zero-position positioning plate (7) is in a horizontal state.

3. The universal tooling for bending tests of aluminum alloy plates according to claim 2, characterized in that: The angle measuring plate (8) is installed in the middle position of the first support roller (5), and the zero position positioning plate (7) extends from one end near the second support roller (6) to form the ejector plate (7a).

4. The universal tooling for bending tests of aluminum alloy plates according to claim 1, characterized in that: The top of the fixed positioning platform (2) is provided with a first fixed boss (2a) and a first movable boss (2b) located at both ends of the first support roller (5). The first fixed boss (2a) is integrally formed on the top surface of the fixed positioning platform (2). The first movable boss (2b) can be slidably installed on the top surface of the fixed positioning platform (2) close to or away from the first movable boss (2b). The end of the first fixed boss (2a) close to the first movable boss (2b) is provided with a first positioning notch (2a1) adjacent to the first support roller (5). The end of the first movable boss (2b) close to the first fixed boss (2a) is provided with a second positioning notch (2b1) adjacent to the first support roller (5). The top of the movable positioning platform (4) is provided with a second fixed boss (4a) and a second movable boss (4b) located at both ends of the second support roller (6). The second fixed boss (4a) is integrally formed on the top surface of the movable positioning platform (4). The second movable boss (4b) can be slidably mounted on the top surface of the movable positioning platform (4) close to or away from it. The end of the second fixed boss (4a) close to the second movable boss (4b) is provided with a third positioning groove (4a1) adjacent to the second support roller (6). The end of the second movable boss (4b) close to the second fixed boss (4a) is provided with a fourth positioning groove (4b1) adjacent to the second support roller (6).

5. The universal tooling for bending tests of aluminum alloy plates according to claim 4, characterized in that: The top surface of the fixed positioning platform (2) is provided with a first sliding groove (2d) parallel to the first support roller (5). The groove opening of the first sliding groove (2d) has a first bolt locking plate (2d1) extending from the two side groove walls toward the middle position. A first bolt guide slot (2d2) is formed between the two first bolt locking plates (2d1). At least two first bolts (2e) that slide in cooperation with the first bolt guide slot (2d2) are installed on the first movable boss (2b). Each first bolt (2e) passes downward through the first bolt guide slot (2d2) and can be locked onto the two first bolt locking plates (2d1) by a first nut (2f) that matches it. The top surface of the movable positioning platform (4) is provided with a second sliding groove (4d) parallel to the second support roller (6). The groove opening of the second sliding groove (4d) has a second bolt locking plate (4d1) extending from the two side groove walls toward the middle position. A second bolt guide slot (4d2) is formed between the two second bolt locking plates (4d1). At least two second bolts (4e) that slide in cooperation with the second bolt guide slot (4d2) are installed on the second movable boss (4b). Each second bolt (4e) passes downward through the second bolt guide slot (4d2) and can be locked onto the two second bolt locking plates (4d1) by a matching second nut (4f).

6. The universal tooling for bending tests of aluminum alloy plates according to claim 1, characterized in that: The translation control assembly (3) includes a screw mounting seat (3a) mounted on the tooling base (1) and an adjusting screw (3b) that is rotatably mounted on the screw mounting seat (3a) in the horizontal direction. The screw mounting seat (3a) is located on the side of the movable positioning table (4) away from the fixed positioning table (2). The rotation axis of the adjusting screw (3b) is perpendicular to the rotation axis of the second support roller (6). The adjusting screw (3b) and the movable positioning table (4) form a screw and nut kinematic pair.

7. A universal apparatus for bending tests of aluminum alloy sheets, characterized in that: The invention includes a press (9) and a general-purpose tooling for bending aluminum alloy plates according to any one of claims 1-6. The press head (9a) of the press (9) is located above the first support roller (5) and the second support roller (6). A bending cutter (10) extending downward is installed at the bottom of the press head (9a). The first support roller (5) and the second support roller (6) are arranged opposite to each other on both sides of the bending cutter (10).

8. The universal apparatus for bending tests of aluminum alloy plates according to claim 7, characterized in that: The bottom surface of the pressure head (9a) is recessed to form a quick-change groove (9a1) with a "T" shaped cross-section, and the top of the bending cutter (10) has a quick-change connector (10a) that is adapted to the quick-change groove (9a1).

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