SPR connection CTS sample positioning and clamping device

Abstract

The utility model discloses a SPR (Surface Plasmon Resonance) connection CTS sample positioning and clamping device which comprises a clamp body, CTS sample plates are arranged on the clamp body, the CTS sample plates comprise a first CTS sample plate and a second CTS sample plate, the first CTS sample plate and the second CTS sample plate are vertically stacked, and two ends of the first CTS sample plate and two ends of the second CTS sample plate are fixed with the clamp body through positioning pins. Relates to the technical field of metallurgical mechanical equipment, and designs a CTS 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, and two CTS sample plates are respectively stacked together through two groups of vertical positioning pins. 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 mechanical equipment, and particularly relates to a positioning and clamping device for SPR-connected CTS specimens. 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 interlock 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 most common one is the cross-tensile test (CTS). The cross-tensile test is a tensile test that measures the mechanical properties and fracture form of the connection joint specimen by applying a tensile force perpendicular to the joint surface of the connection piece at a certain rate.

[0004] The existing SPR riveting equipment is a general stamping equipment. When making cross-tensile specimens (CTS), manual operation is required. First, the overlapping positions of two specimen connecting plates need to be marked, the stamping center of the riveting die needs to be found and symmetrically arranged, and then the specimen is manually held and stamped and riveted on the equipment. Since marking, alignment, positioning, and stamping are all manually controlled, the specimens produced have poor accuracy, low efficiency, and high safety risks.

[0005] Therefore, it is urgent to design a positioning and clamping device for SPR-connected CTS specimens, which has practical significance for improving the accuracy of specimens, enhancing the experimental work efficiency, and fundamentally solving the equipment safety problem. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a positioning and clamping device for SPR-connected CTS specimens to solve the problems raised in the above background art.

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

[0008] A positioning and clamping device for SPR-connected CTS specimens includes a fixture body. A CTS specimen plate is provided on the fixture body. The CTS specimen plate includes a first CTS specimen plate and a second CTS specimen plate. The first CTS specimen plate and the second CTS specimen plate are vertically stacked, and both ends of the first CTS specimen plate and the second CTS specimen plate are fixed to the fixture body through positioning pins.

[0009] Preferably, four positioning pin holes are provided on the jig body, and the four positioning pin holes are distributed in a rectangular array, corresponding to the through holes of the first CTS test sample plate and the second CTS test sample plate respectively.

[0010] Preferably, the first CTS test sample plate and the second CTS test sample plate form a CTS test sample plate with a cross structure. The upper end of the positioning pin is connected with the through hole of the CTS test sample plate by a clearance fit, and the lower end is connected with the positioning pin hole of the jig body by an interference fit.

[0011] Preferably, a upsetting die is provided at the bottom of the jig body. The upsetting die is arranged in the base hole at the top of the die holder. A positioning hole is provided in the center of the jig body, and the positioning hole is slidably connected with the upsetting die.

[0012] Preferably, the die holder is connected to the SPR equipment by bolts.

[0013] Preferably, a riveting nose is provided above the positioning hole, and the riveting nose is connected to the upper part of the SPR equipment by a fastener.

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

[0015] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0016] In the present utility model, a CTS sample positioning and clamping device is designed and used in combination with the SPR riveting equipment. The jig body is installed on the upsetting die of the SPR equipment through the central positioning hole, and two CTS test sample plates are stacked together through two groups of vertical positioning pins respectively. The device has a simple structure, is convenient to operate, has high connection precision, can effectively avoid the harm of the stamping die to the operator, and improves the safety and reliability of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the side view of the present utility model;

[0019] Figure 3 is the top view of the jig body of the present utility model;

[0020] Figure 4 is the sectional view of the jig body of the present utility model;

[0021] Figure 5 is the structural schematic diagram of the CTS test sample plate of the present utility model;

[0022] Figure 6 is the side view of the CTS test sample plate of the present utility model;

[0023] In the figure: 1. Fastener; 2. Riveting nose; 3. Upsetting die; 4. Die holder; 5. Fixture body; 6. Locating pin; 7. CTS test sample; 7.1. First CTS test sample; 7.2. Second CTS test sample; 8. Rivet. Specific embodiments

[0024] The following details the specific embodiments of the present utility model.

[0025] 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 specific range. The range 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 in this article, and "0 - 5" is only an abbreviated representation of these numerical combinations.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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 comprised, or it can mean that only the listed components are included or comprised.

[0030] Unless otherwise specified, the reaction is carried out under normal temperature and normal pressure conditions.

[0031] Unless otherwise specified, all parts or percentages are by weight or weight percentage.

[0032] In the present utility model, the substances used are all known substances and can be purchased or synthesized by known methods.

[0033] 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.

[0034] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the following further details the present utility model in conjunction with 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.

[0035] Embodiment:

[0036] An SPR connection CTS sample positioning and clamping device, as Figures 1-6 shown, includes a fixture body 5. A CTS test plate 7 is provided on the fixture body 5. The CTS test plate 7 includes a first CTS test plate 7.1 and a second CTS test plate 7.2. The first CTS test plate 7.1 and the second CTS test plate 7.2 are vertically stacked, and both ends of the first CTS test plate 7.1 and the second CTS test plate 7.2 are fixed to the fixture body 5 through positioning pins 6.

[0037] In a possible implementation manner, four positioning pin holes are opened on the fixture body 5. The four positioning pin holes are distributed in a rectangular array and correspond to the through holes of the first CTS test plate 7.1 and the second CTS test plate 7.2 respectively.

[0038] In a possible implementation manner, the first CTS test plate 7.1 and the second CTS test plate 7.2 form a CTS test plate 7 in a cross structure. The upper end of the positioning pin 6 is connected to the through hole of the CTS test plate 7 with a clearance fit, and its lower end is connected to the positioning pin hole of the fixture body 5 with an interference fit.

[0039] In a possible implementation manner, a heading die 3 is provided at the bottom of the fixture body 5. The heading die 3 is arranged in a base hole at the top of the die holder 4. A positioning hole is opened at the center of the fixture body 5, and the positioning hole is slidably connected to the heading die 3.

[0040] In a possible implementation, the die holder 4 is connected to the SPR device by bolts.

[0041] In a possible implementation, a riveting nose 2 is provided above the positioning hole, and the riveting nose 2 is connected to the upper part of the SPR device by a fastener 1.

[0042] In a possible implementation, the riveting nose 2 is connected to the SPR riveting pressure transmission mechanism by a fastener 1, and a positioning device and an impact device for the rivet 8 are provided inside the riveting nose 2.

[0043] In a possible implementation, the appearance of the fixture body 5 is consistent with that of the CTS test sample plate 7. Four positioning holes are symmetrically distributed on it, and the size and precision requirements are the same as those of the hole positions of the CTS test sample plate 7. There is a positioning hole in the center of the fixture body 5, and its hole is in a sliding fit with the upsetting die 3 according to H7 / f6; four positioning pins 6 are installed on the positioning holes of the fixture body 5. The upper ends of the positioning pins 6 are in a clearance fit with the holes of the CTS test sample plate 7 according to H7 / g6, and the lower ends are in an interference fit with the holes of the fixture body 5 according to H7 / m6. Two test sample plates of the CTS test sample plate 7 are placed on the fixture body 5 and are respectively positioned by two groups of positioning pins 6 to ensure that the cross pattern precision meets the requirements of tensile testing after riveting.

[0044] In a possible implementation, the upsetting die 3 is a component for SPR riveting forming, and is installed in the base hole of the die holder 4. The die holder 4 is connected to the SPR device body by bolts. The fixture body 5 is connected and matched with the upsetting die 3 through the central positioning hole. To ensure good contact between the riveting nose 2 and the upsetting die 3 during stamping, the upper surface of the fixture body 5 is on the same horizontal plane as the surface of the upsetting die 3 after installation. The riveting nose 2 is connected to the upper part of the device by a fastener 1. The upper part of the riveting nose 2 is connected to the SPR riveting pressure transmission mechanism, and a positioning device and an impact device for the rivet 8 are provided inside the riveting nose 2.

[0045] By adopting the above technical solutions:

[0046] Through four positioning pins 6, the first CTS test sample plate 7.1 and the second CTS test sample plate 7.2 to be riveted are precisely positioned to ensure the symmetry precision of the sample riveting, thereby ensuring the accuracy of the tensile data. The device is integrally designed with the SPR riveting equipment, with a simple structure, convenient operation, high connection precision, can effectively avoid the harm of stamping dies to personnel, and has practical significance for realizing the essential safety of the equipment.

[0047] Working principle, refer to Figure 1, during use, after the clamping device is installed on the upsetting die 3, the first CTS test sample plate 7.1 and the second CTS test sample plate 7.2 are cross-stacked on the fixture body 5, and the riveting position accuracy of the sample is maintained by the positioning pin 6. When the equipment is started, the upper transmission system drives the riveting nose 2 to move downward through the fastener 1. After about 15 mm from the upsetting die 3 (fixture body), the system issues a riveting instruction, and the riveting nose 2 presses downward to contact the sample plate 7 on the upsetting die 3, and the impact device pushes the rivet 8 into the two stacked sample plates 7 to form a specific SPR rivet connection.

[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A SPR-connected CTS sample positioning and clamping device, characterized in that: The invention comprises a clamp body (5), on which a CTS sample plate (7) is arranged, wherein the CTS sample plate (7) comprises a first CTS sample plate (7.1) and a second CTS sample plate (7.2), wherein the first CTS sample plate (7.1) and the second CTS sample plate (7.2) are stacked vertically, and both ends of the first CTS sample plate (7.1) and the second CTS sample plate (7.2) are fixed to the clamp body (5) by positioning pins (6).

2. The SPR-connected CTS sample positioning and clamping device according to claim 1, characterized in that: The clamp body (5) is provided with four positioning pin holes, which are distributed in a rectangular array and correspond to the through holes of the No. 1 CTS sample plate (7.1) and the No. 2 CTS sample plate (7.2) respectively.

3. The SPR-connected CTS sample positioning and clamping device according to claim 1, characterized in that: The first CTS sample plate (7.1) and the second CTS sample plate (7.2) form a CTS sample plate (7) with a cross structure, the upper end of the positioning pin (6) is connected to the through hole of the CTS sample plate (7) by a clearance fit, and the lower end is connected to the positioning pin hole of the clamp body (5) by an interference fit.

4. The SPR-connected CTS sample positioning and clamping device according to claim 1, characterized in that: The bottom of the clamp body (5) is provided with a forging die (3), which is arranged in a base hole at the top of a die base (4). A positioning hole is opened at the center of the clamp body (5), and the positioning hole is connected to the forging die (3) in a sliding manner.

5. The SPR-connected CTS sample positioning and clamping device as claimed in claim 4, characterized in that: The mold base (4) is connected to the SPR device by bolts.

6. The SPR-connected CTS sample positioning and clamping device according to claim 4, characterized in that: A rivet nose (2) is provided above the positioning hole, and the rivet nose (2) is connected to the upper part of the SPR device via a fastener (1).

7. The SPR-connected CTS sample positioning and clamping device according to claim 6, characterized in that: The rivet nose (2) is connected to the SPR riveting pressure transmission mechanism via a fastener (1), and a positioning device and an impact device for the rivet (8) are provided inside the rivet nose (2).

Images