SPR connection TSS sample clamping device

Abstract

The utility model discloses an SPR connection TSS sample clamping device which comprises a clamp body, a clamping groove is formed in the center of the clamp body, T-shaped positioning plates are arranged on the two side walls of the clamping groove in a clamped mode, adjusting bolts are arranged in the centers of the side walls of the clamping groove in a penetrating mode and fixedly connected with the T-shaped positioning plates, and positioning bolts are arranged at the two ends of the side walls of the clamping groove in a penetrating mode and fixedly connected with the T-shaped positioning plates. Relates to the technical field of metallurgical steel rolling machinery, and provides a TSS sample positioning and clamping device which is matched with SPR riveting equipment for use, a clamp body is mounted on an upsetting die of the SPR equipment through a central positioning hole, two tension-shear sample plates are stacked together, and the edge distance of the samples is adjusted through an adjusting mechanism, so that the riveting position conforms to the central symmetry precision. The device is simple in structure, convenient to operate, high in connection precision and capable of effectively preventing a stamping die from hurting an operator and improving experiment safety and reliability.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical rolling machinery, and specifically relates to a SPR-connected TSS specimen clamping device. Background Art

[0002] SPR (Self-Piercing Rivet) is a metal cold plate connection process, also known as self-piercing riveting technology, which is a cold forming process for quickly connecting two or more layers of plates. After the rivet pierces and penetrates the upper plate, under the action of the die, the legs of the rivet expand around the lower plate, and finally a mechanical interlocking connection joint is formed inside the lower plate.

[0003] For parts produced by the SPR riveting process, the main engine factory must conduct evaluation and certification during application. Manufacturers often need to detect the relevant mechanical data of the connection joint to ensure the comprehensive performance of the equipment. Among them, the common one is the TSS tensile shear force test. The tensile shear test is a tensile test that measures the mechanical properties and fracture form of the connection joint by applying a tensile force parallel to the bonding surface of the connected specimen and stretching at a certain rate.

[0004] The existing SPR riveting equipment is a general stamping equipment. When making a tensile shear specimen (TSS), it needs to rely on manual operation. First, it is necessary to mark the overlapping positions of the two specimen connection plates, find the stamping center of the riveting die, and arrange them symmetrically. Then, manually hold the specimen and perform stamping riveting on the equipment. Since scribing, alignment, positioning, and stamping are all manually controlled, the accuracy of the specimens produced is poor, the efficiency is low, and the safety risk is high. The operator is easily squeezed by the die.

[0005] Therefore, there is an urgent need for a SPR-connected TSS specimen clamping device to ensure the processing accuracy of the specimen, improve the test efficiency, and ensure the personal safety of the operator. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a SPR-connected TSS specimen clamping device to solve the problems raised in the above background art.

[0007] The technical solution adopted by the utility model is as follows:

[0008] A SPR-connected TSS specimen clamping device includes a clamp body. A clamping groove is opened at the center of the clamp body. T-shaped positioning plates are clamped on both side walls of the clamping groove. An adjusting bolt is inserted through the center of the side wall of the clamping groove, and the adjusting bolt is fixedly connected to the T-shaped positioning plate. Positioning bolts are inserted through both ends of the side wall of the clamping groove.

[0009] Preferably, one end of the positioning bolt close to the T-shaped positioning plate adopts a circular structure, and the positioning bolt is threadedly connected to the side wall of the clamping groove.

[0010] Preferably, a knurled nut is screwed onto one end of the adjusting bolt away from the T-shaped positioning plate.

[0011] Preferably, a positioning groove is formed in the side wall of the clamping groove, and the vertical section of the T-shaped positioning plate is clamped in the positioning groove.

[0012] Preferably, a positioning hole is formed at the center of the bottom of the clamping groove. The positioning hole is in sliding fit connection with the upsetting die on the SPR device. The upsetting die is arranged in the base hole at the top of the die holder, and the die holder is bolted to the SPR device body.

[0013] Preferably, a riveting nose is arranged above the positioning hole, and the riveting nose is connected to the upper part of the SPR device through a fastener.

[0014] Preferably, the riveting nose is connected to the SPR riveting pressure transmission mechanism through a fastener, and a rivet positioning device and an impact device are arranged inside the riveting nose.

[0015] Preferably, the fixture is used to fix the TSS specimen. Several TSS specimens are stacked in the clamping groove and fixed by rivets.

[0016] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0017] In the present utility model, a TSS specimen positioning and clamping device is proposed, which is used in conjunction with an SPR riveting device. The fixture is installed on the upsetting die of the SPR device through the central positioning hole. Two tensile-shear test plates are stacked together, and the edge distance of the specimen is adjusted through the adjusting mechanism to make the riveting position meet the central symmetry accuracy. The device has a simple structure, is easy to operate, has a high connection accuracy, can effectively avoid the harm of the stamping die to the operator, and improves the experimental safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the sectional view taken along line A-A of the present utility model;

[0020] Figure 3 is the sectional view taken along line B-B of the present utility model;

[0021] Figure 4 is the sectional view of the fixture of the present utility model;

[0022] Figure 5 is the connection schematic diagram of the TSS specimen of the present utility model;

[0023] Figure 6 is the sectional view of the connection of the TSS specimen of the present utility model;

[0024] In the figure: 1. jig body; 1.1 positioning hole; 1.2 positioning groove; 2. T-shaped positioning plate; 3. positioning bolt; 4. adjusting bolt; 5. knurled nut; 6. TSS specimen; 7. upsetting die; 8. die holder; 9. riveting nose; 10. fastener; 11. rivet. Specific embodiments

[0025] The following details the specific embodiments of the present utility model.

[0026] The "range" disclosed in the present utility model is defined in the form of a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, and the selected lower limit and upper limit define the boundary of a particular range. The ranges defined in this way can include the end values or not include the end values, and can be combined arbitrarily, that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 10-50 is listed for a specific parameter, ranges of 10-40 and 20-50 are also contemplated. In addition, if the minimum range values 1 and 2 are listed, and if the maximum range values 3, 4, and 5 are listed, then the following ranges are all contemplated: 1-3, 1-4, 1-5, 2-3, 2-4, and 2-5. In this application, unless otherwise specified, the numerical range "a-b" represents an abbreviated representation of any real number combination between a and b, where a and b are both real numbers. For example, the numerical range "0-5" means that all real numbers between "0-5" have been fully listed herein, and "0-5" is only an abbreviated representation of these numerical combinations.

[0027] If there is no special instruction, all embodiments and optional embodiments of this application can be combined with each other to form a new technical solution.

[0028] If there is no special instruction, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0029] If there is no special instruction, all steps of this application can be carried out in sequence or randomly, preferably in sequence. For example, the method includes steps (a) and (b), which means that the method can include steps (a) and (b) carried out in sequence, or can also include steps (b) and (a) carried out in sequence. For example, it is mentioned that the method may further include step (c), which means that step (c) can be added to the method in any order. For example, the method can include steps (a), (b), and (c), or can also include steps (a), (c), and (b), or can also include steps (c), (a), and (b), etc.

[0030] Unless otherwise specified, the terms "comprising" and "including" mentioned in this application are open-ended and can also be closed-ended. For example, the terms "comprising" and "including" can mean that other components not listed may also be included or contained, or that only the listed components are included or contained.

[0031] Unless otherwise specified, the reaction is carried out under normal temperature and atmospheric pressure conditions.

[0032] Unless otherwise specified, all parts or percentages are by weight or weight percentage.

[0033] In the present utility model, the substances used are all known substances and can be purchased or synthesized by known methods.

[0034] In the present utility model, the devices or equipment used are all conventional devices or equipment known in the field and can all be purchased.

[0035] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0036] Embodiment:

[0037] An SPR-connected TSS sample clamping device, as Figures 1-6 shown, includes a clamp body 1. A clamping groove is provided at the center of the clamp body 1. T-shaped positioning plates 2 are respectively clamped on both side walls of the clamping groove. An adjusting bolt 4 is inserted through the center of the side wall of the clamping groove, and the adjusting bolt 4 is fixedly connected to the T-shaped positioning plate 2. Positioning bolts 3 are respectively inserted through both ends of the side wall of the clamping groove.

[0038] In a possible implementation manner, one end of the positioning bolt 3 close to the T-shaped positioning plate 2 has a circular structure, and the positioning bolt 3 is threadedly connected to the side wall of the clamping groove.

[0039] In a possible implementation manner, a knurled nut 5 is screwed on the end of the adjusting bolt 4 away from the T-shaped positioning plate 2.

[0040] In a possible implementation manner, a positioning groove 1.2 is provided on the side wall of the clamping groove, and the vertical section of the T-shaped positioning plate 2 is clamped in the positioning groove 1.2.

[0041] In a possible implementation manner, a positioning hole 1.1 is provided at the center of the bottom of the clamping groove. The positioning hole 1.1 is in sliding fit connection with the upsetting die 7 on the SPR device. The upsetting die 7 is arranged in the base hole at the top of the die holder 8, and the die holder 8 is bolted to the SPR device body.

[0042] In a possible implementation, a riveting nose 9 is provided above the positioning hole 1.1, and the riveting nose 9 is connected to the upper part of the SPR device through a fastener 10.

[0043] In a possible implementation, the riveting nose 9 is connected to the SPR riveting pressure transmission mechanism through a fastener 10, and a rivet positioning device and an impact device are provided inside the riveting nose 9.

[0044] In a possible implementation, the fixture body 1 is used to fix the TSS specimen 6. A plurality of TSS specimens 6 are stacked in the clamping groove and fixed by rivets 11.

[0045] Furthermore, the end face of the fixture body 1 is of a U-shaped structure, and positioning grooves 1.2 are symmetrically machined on both side faces. Two positioning plates 2 are installed in the two positioning grooves 1.2; there is a positioning hole 1.1 at the center of the fixture body 1, and its hole is in a sliding fit connection with the upsetting die column 7 on the equipment according to H7 / f6; on both sides of the symmetric center of the fixture body 1, screw holes are machined and cooperate with positioning bolts 3; the end face of the positioning plate 2 is of a T-shaped structure, and a countersunk threaded hole is machined in the middle part along the length direction. The position of the adjusted positioning plate is fixed by an adjusting bolt 4. The end of the positioning bolt 3 is spherical. According to the size of the TSS specimen, the positioning bolt 3 is rotated to adjust the symmetric center on both sides, and then the positioning plate is locked by relying on the positioning bolt 3.

[0046] Furthermore, the upsetting die 7 is a component for SPR riveting forming, and is installed in the upper part of the die base 8. The die base 8 is bolt-connected to the SPR device body. The fixture body 1 is in a fit connection with the upsetting die column 7 through the central positioning hole 1.1. To ensure good contact between the riveting nose 9 and the upsetting die 8 during stamping, the upper surface of the fixture body 1 is on the same horizontal plane as the surface of the upsetting die 7 after installation. The riveting nose 9 is connected to the upper part of the equipment through a fastener. The upper part of the riveting nose 9 is connected to the SPR riveting pressure transmission mechanism, and a rivet positioning device and an impact device are provided inside the riveting nose 9.

[0047] By adopting the above technical solutions:

[0048] Through the fit connection between the central positioning hole 1.1 of the fixture body 1 and the upsetting die column 7, the center edge distance on both sides of the specimen is adjusted to make the specimen to be stamped in a symmetric position, and the two groups of connecting parts to be riveted are precisely positioned, ensuring the symmetric accuracy of specimen riveting, and thus guaranteeing the accuracy of tensile data. The device is integrally designed with the SPR riveting equipment, with a simple structure, convenient operation, high connection accuracy, effectively avoiding the harm to personnel caused by stamping dies, and having practical significance for realizing the intrinsic safety of the equipment.

[0049] Working principle, refer to Figures 1-6, during use, after the clamping device is installed on the upsetting die, two TSS specimen 6 plates are horizontally stacked on the fixture body 1. The positioning bolt 3 is adjusted to drive the positioning plate 2 to move, and the positioning plate 2 drives the TSS specimen 6 to move. After the TSS specimen 6 is adjusted to the center-symmetric position of the die, the adjusting bolt 4 is tightened to lock the position of the positioning plate 2. The SPR equipment is started, and the upper transmission system drives the riveting nose 9 to move downward through the fastener. After about 15 mm from the upsetting die 7 (fixture body 1), the system issues a riveting instruction, and the riveting nose 9 presses downward to contact the upsetting die 7. The impact device pushes the rivet 11 into the two stacked TSS specimens 6 to form a specific SPR rivet connection.

[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A SPR-connected TSS sample clamping device, characterized in that: The clamp body (1) comprises a clamping groove at the center of the clamping groove, T-shaped positioning plates (2) are clamped on both side walls of the clamping groove, an adjusting bolt (4) is inserted through the center of the side wall of the clamping groove, the adjusting bolt (4) is fixedly connected to the T-shaped positioning plate (2), and positioning bolts (3) are inserted through both ends of the side wall of the clamping groove.

2. The SPR-connected TSS sample clamping device according to claim 1, characterized in that: The end of the positioning bolt (3) close to the T-shaped positioning plate (2) adopts a circular structure, and the positioning bolt (3) is screwed to the side wall of the clamping groove by means of a thread.

3. The SPR-connected TSS sample clamping device according to claim 1, characterized in that: One end of the adjusting bolt (4) away from the T-shaped positioning plate (2) is screwed with a knurled nut (5).

4. The SPR-connected TSS sample clamping device according to claim 1, characterized in that: A positioning groove (1.2) is provided on the side wall of the clamping groove, and the vertical section of the T-shaped positioning plate (2) is clamped in the positioning groove (1.2).

5. The SPR-connected TSS sample clamping device according to claim 1, characterized in that: A positioning hole (1.1) is provided at the center of the bottom of the clamping groove, and the positioning hole (1.1) is slidably connected to a heading die (7) on the SPR device. The heading die (7) is arranged in a base hole at the top of a die base (8), and the die base (8) is bolted to a body of the SPR device.

6. The SPR-connected TSS sample clamping device according to claim 5, characterized in that: A rivet nose (9) is provided above the positioning hole (1.1), and the rivet nose (9) is connected to the upper part of the SPR device via a fastener (10).

7. The SPR-connected TSS sample clamping device according to claim 6, characterized in that: The rivet nose (9) is connected to the SPR riveting pressure transmission mechanism via a fastener (10), and a rivet positioning device and an impact device are provided inside the rivet nose (9).

8. The SPR-connected TSS sample clamping device according to claim 7, characterized in that: Place The clamp body (1) is used to fix the TSS sample (6). A plurality of TSS samples (6) are stacked in the clamp groove. And fixed by rivets (11).

Images