A multifunctional tooling fixture for tensile specimen fabrication

Abstract

The utility model relates to industrial processing technical field especially disclose a kind of multifunctional tool fixture for tensile sample sheet production, including tensile clamp block, tool base, cross tensile sheet and briquetting, tensile clamp block can be detachably connected with tool base, briquetting respectively by bolt, and tensile clamp block and tool base connection can form upper tensile tool module, tensile clamp block and briquetting connection can form lower tensile tool module, slot for positioning cross tensile sheet is provided in tool base middle part, briquetting is ladder-shaped, the equipment is integrated tensile sample sheet production and cross tensile test function, and rely on tool base slotting, array screw thread hole and threaded ladder pin construction unified positioning structure, ensure that the positioning reference of cross tensile sheet production and test is identical, fundamentally solve the problem of traditional two sets of independent tooling due to reference inconsistency resulting in sheet hole deviation, unable to install or inaccurate test result.

Description

Technical Field

[0001] This utility model relates to the field of industrial processing technology, and in particular to a multifunctional tooling fixture for making stretching samples. Background Technology

[0002] With the rapid development of new energy vehicles, multi-material bodies have attracted more attention in the automotive industry. The development of new multi-material and new material connection processes is becoming increasingly important. The most common method used in the development of connection processes is to conduct mechanical property tests by making connection stretching sheets.

[0003] In the process of connecting tensile sheets and conducting mechanical property tests, two sets of tooling are usually used, and the two are not designed in the same way and the positioning reference is inconsistent. This causes the tensile connecting sheets to have hole position deviations or cannot be installed at all when using the tensile tooling, resulting in the failure of the manufactured sheets or inaccurate test results. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multifunctional tooling fixture for the fabrication of tensile specimens. This solves the technical problem that existing equipment often uses two sets of tooling with inconsistent design methods and positioning benchmarks during the connection of tensile specimens and the conduct of mechanical property tests. This results in hole deviations or even complete inability to install the tensile specimens when using the tensile tooling, leading to specimen failure or inaccurate test results.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A multifunctional tooling fixture for producing stretch samples includes a stretching clamping block, a tooling base, a cross-shaped stretching sheet, and a pressure block. The stretching clamping block can be detachably connected to the tooling base and the pressure block respectively by bolts. The connection between the stretching clamping block and the tooling base can form an upper stretching tooling module, and the connection between the stretching clamping block and the pressure block can form a lower stretching tooling module. The middle part of the tooling base has a groove for positioning the cross-shaped stretching sheet. The pressure block is stepped, and its protruding part corresponds to and is sized to the grooved part of the tooling base.

[0006] Preferably, the slots in the tooling base are used to achieve auxiliary positioning of the cross-stretched sheet in the x and y directions.

[0007] Preferably, the bottom of the groove of the tooling base is provided with an array of threaded holes, and some of the holes are countersunk holes.

[0008] Preferably, the pressure block has through holes at both ends, the through holes correspond to the opening positions in the tooling base groove, and some of the through holes are countersunk holes.

[0009] Preferably, a threaded stepped pin can be installed in the array of threaded holes in the tooling base groove to precisely position the cross-stretched sheet.

[0010] Compared with the prior art, the present invention has the following beneficial effects: By integrating the functions of tensile specimen fabrication and cross tensile testing, and relying on the unified positioning structure such as the slotted base of the tooling, the array of threaded holes, and the threaded stepped pin, it ensures that the positioning reference during cross tensile specimen fabrication is completely consistent with the positioning reference during subsequent cross tensile testing. This fundamentally solves the problems of discrepancies in specimen hole positions, inability to install, or inaccurate test results caused by inconsistent positioning references in traditional two sets of independent tooling. At the same time, it enables a single tooling to meet the tensile specimen fabrication and testing needs of various connection processes, improving operational convenience and efficiency. Attached Figure Description

[0011] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the multifunctional fixture tooling of this utility model; Figure 2 This is a schematic diagram illustrating the manufacturing process of the single-stretch sheet of this utility model; Figure 3 This is a schematic diagram of the manufacturing process of the cross-stretch sheet of this utility model. Figure 4 This is a schematic diagram of the cross-stretching fixture of this utility model; Figure 5 This is a schematic diagram of the upper stretching fixture module of this utility model; Figure 6 This is a schematic diagram of the lower stretching fixture module of this utility model.

[0013] Illustration: 1. Stretching clamp; 2. Tooling base; 3. Cross stretching sheet; 4. Pressure block. Detailed Implementation

[0014] This application provides a multifunctional tooling fixture for tensile specimen fabrication, effectively solving the problem that existing equipment often uses two sets of tooling with inconsistent design methods and positioning benchmarks during the connection of tensile specimens and mechanical property testing. This results in hole position deviations or even complete inability to install the fabricated tensile specimens when using the tensile tooling, leading to specimen failure or inaccurate test results. This equipment integrates tensile specimen fabrication and cross tensile testing functions, and relies on the slotted base of the tooling, arrayed threaded holes, and threaded stepped pins to construct a unified positioning structure, ensuring that the positioning benchmarks for cross tensile specimen fabrication and testing are consistent. This fundamentally solves the problem of hole position deviations, inability to install, or inaccurate test results caused by inconsistent benchmarks in traditional two sets of independent tooling.

[0015] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the technical solution in this application embodiment effectively solves the technical problem that existing equipment, in the process of connecting tensile sheets and conducting mechanical property tests, often uses two sets of tooling with inconsistent design methods and positioning benchmarks, resulting in hole deviations or even complete inability to install the tensile connecting sheets when using the tensile tooling, thus causing sheet failure or inaccurate test results. The overall idea is as follows: A multifunctional tooling fixture for making tensile samples includes a tensile clamping block 1, a tooling base 2, a cross-shaped tensile sheet 3, and a pressure block 4. The tensile clamping block 1 can be connected by bolts. The tooling base 2 and the pressure block 4 are detachably connected respectively. The tension clamp 1 can be connected to the tooling base 2 to form an upper tension tooling module, and the tension clamp 1 can be connected to the pressure block 4 to form a lower tension tooling module. The middle part of the tooling base 2 has a groove for positioning the cross-shaped tension piece 3. The pressure block 4 is stepped, and its protruding part corresponds to the groove part of the tooling base 2 and is sized to match. This allows a single tooling to simultaneously perform tension sample production and cross-shaped tension testing functions without the need for two independent tooling sets. The structural design avoids the problem of inconsistent reference caused by switching between two sets of tooling sets in the traditional way.

[0016] The slots in the tooling base 2 are used to assist in the positioning of the cross-stretched sheet 3 in the x and y directions. Through the contour constraints of the slots in the tooling base 2, the large displacement of the cross-stretched sheet 3 in the x (lateral) and y (longitudinal) directions is effectively limited, providing a stable initial alignment reference for the subsequent precise positioning of the sheet.

[0017] The bottom of the groove of the tooling base 2 is provided with an array of threaded holes, and some of the holes are countersunk holes. The countersunk holes in the groove of the tooling base 2 allow the head of the connecting bolt or the stepped pin to be embedded in the hole, so as to avoid it protruding from the bottom plane of the groove and interfering with the fit between the cross stretching material 3 and the bottom of the groove, thus ensuring the stability of the material positioning reference.

[0018] The pressure block 4 has through holes at both ends, and the positions of the through holes correspond to the openings in the grooves of the tooling base 2. Some of the through holes are countersunk holes. The through holes of the pressure block 4 correspond to the openings in the grooves of the tooling base 2, ensuring that the bolts can be smoothly inserted to connect the pressure block and the base, avoiding the pressure block from tilting due to misalignment of the holes, and thus ensuring the stability of the pressure block in fixing the material.

[0019] A threaded stepped pin can be installed in the array of threaded holes in the groove of the tooling base 2 to precisely position the cross-stretched sheet 3. The threaded stepped pin cooperates with the array of threaded holes in the groove of the tooling base 2 to accurately limit the minute displacement of the cross-stretched sheet 3, making up for the insufficient accuracy of positioning by slotting alone and improving the positioning accuracy of the sheet.

[0020] To address the problems existing in the prior art, this utility model provides a multifunctional tooling fixture for tensile specimen fabrication. This equipment integrates tensile specimen fabrication and cross tensile testing functions, and relies on the slotted base of the tooling, arrayed threaded holes, and threaded stepped pins to construct a unified positioning structure, ensuring that the positioning benchmarks for cross tensile specimen fabrication and testing are consistent. This fundamentally solves the problems of discrepancies in specimen hole positions, inability to install, or inaccurate test results caused by inconsistent benchmarks in traditional two sets of independent tooling.

[0021] Working principle: The first step, when making a tensile specimen, is to place the specimen to be processed into the middle slot of the fixture base 2. The contour of the slot is adapted to the specimen, which can directly restrict the displacement of the specimen in the x and y directions, achieve auxiliary positioning, and prevent the specimen from being misplaced. Then, according to the size of the specimen to be processed, select the corresponding array hole position in the slot of the fixture base 2, pass the threaded stepped pin through the through hole of the pressure block 4, and tighten it with the array threaded hole in the slot of the base. The stepped pin not only fixes the pressure block and the base through the thread, but also performs precise positioning of the specimen, ensuring that the specimen does not move during processing. After the specimen is positioned and fixed, different connection processes such as steel-aluminum spot welding, SPR, adhesive bonding, and riveting can be used to process the specimen according to the requirements, and produce a straight tensile specimen or a cross tensile specimen that meets the requirements of mechanical testing. The second step involves connecting the tension clamp 1 to the fixture base 2 via bolts to form the upper tension fixture module. Simultaneously, connecting another set of tension clamps 1 to the pressure block 4 via bolts to form the lower tension fixture module. The assembly reference for both modules is based on the slots and array holes of the fixture base 2, perfectly consistent with the positioning reference used in the sample fabrication stage. Then, the cross-tension sheet 3, previously fabricated using this fixture, is fixed between the upper and lower tension fixture modules. Since the positioning reference during sample fabrication is consistent with the clamping reference during testing... With identical references, the problems of hole position deviation and inability to install caused by inconsistent references between two sets of traditional tooling can be completely avoided, ensuring accurate clamping of the sample. The assembled upper and lower tensile tooling modules and cross tensile sheet 3 are connected to the tensile testing machine as a whole. The testing machine applies axial tensile force to the upper and lower modules. The tensile force is transmitted to the cross tensile sheet 3 through the tensile clamping block 1, tooling base 2, and pressure block 4 until the sheet breaks or reaches the test set value, thus completing the mechanical property test. Because the module connection is stable, the force transmission path is clear, and the positioning reference is unified, the accuracy of the test results is greatly improved.

[0022] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A multifunctional tooling fixture for fabricating stretching specimens, characterized in that, The tooling includes a stretching clamp (1), a tooling base (2), a cross stretching sheet (3), and a pressure block (4). The stretching clamp (1) can be detachably connected to the tooling base (2) and the pressure block (4) respectively by bolts. The stretching clamp (1) and the tooling base (2) can form an upper stretching tooling module, and the stretching clamp (1) and the pressure block (4) can form a lower stretching tooling module. The tooling base (2) has a groove in the middle part for positioning the cross stretching sheet (3). The pressure block (4) is stepped, and its protruding part corresponds to the grooved part of the tooling base (2) and is sized to match.

2. The multifunctional tooling fixture for fabricating stretching samples as described in claim 1, characterized in that, The slots in the tooling base (2) are used to achieve auxiliary positioning of the cross-stretched sheet (3) in the x and y directions.

3. The multifunctional tooling fixture for fabricating stretching samples as described in claim 1, characterized in that, The tooling base (2) has an array of threaded holes at the bottom of the groove, and some of the holes are countersunk holes.

4. A multifunctional tooling fixture for fabricating stretching specimens as described in claim 1, characterized in that, The pressure block (4) has through holes at both ends. The through holes correspond to the opening positions in the groove of the tooling base (2), and some of the through holes are countersunk holes.

5. A multifunctional tooling fixture for fabricating stretching specimens as described in claim 1, characterized in that, The tooling base (2) has an array of threaded holes in which a stepped pin with threads can be installed to precisely position the cross-stretched sheet (3).

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