High-strength lock catch riveting nut

Abstract

The utility model provides a high-strength lock catch riveting nut. The high-strength lock catch riveting nut comprises a nut body. A blind hole is formed in the middle of the nut body; an internal thread is arranged in the blind hole; the opening end of the blind hole is provided with a stamping and cutting convex brim; a polygonal material clamping closing edge is arranged at the end, located on the stamping and cutting protruding eave, of the nut body. The lock catch riveting nut has the advantages of being environmentally friendly, efficient, high in strength and stable, a welding nut is replaced by the lock catch riveting nut product, poison gas generated by welding is avoided, the machining process is environmentally friendly and free of pollution, the machining efficiency of the lock catch riveting nut technology is high, and the lock catch riveting nut is suitable for being popularized and used. And the machined surface is smooth without increasing the manual polishing and grinding cost, so that the cost is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to nut technical field, especially a high -strength lock catch riveting nut. BACKGROUND

[0002] In the existing connecting piece technology, the connection between the nut and the plate usually relies on welding, threaded connection or other mechanical fixing mode. However, these modes have some deficiencies in some application scenarios. Although the welding connection has high strength, heat distortion and residual stress are easily generated in the welding process, which affects the precision and reliability of the connecting piece, and the welding process will produce toxic gas to pollute the environment, and the threaded connection needs to process threaded holes on the connecting plate in advance, which increases the processing cost and complexity. In addition, the traditional connection mode may not have enough connection strength when bearing shear force or torque, which is easy to cause loosening or failure, and the connection strength between the nut and the plate is not stable enough and is easy to be affected by external factors.

[0003] In order to solve the above problems, people began to try to use stamping and shaping riveting technology to connect the nut and the connecting plate. This technology forms a firm connection between the nut and the connecting plate through stamping equipment. However, the existing stamping and shaping riveting nut still has some deficiencies in structure and performance. For example, the stamping and shaping part of some nuts is designed unreasonably, which leads to insufficient connection strength and stability; and some other nuts have problems such as high processing difficulty and high cost. Therefore, it is necessary to provide a high-strength lock catch riveting nut to solve the above problems. SUMMARY

[0004] The utility model discloses a high -strength lock catch riveting nut has the advantages such as environmental protection, high efficiency, high strength, stable, lock catch riveting nut product replaces welding nut, there is no toxic gas produced by welding, and the processing process is environmental protection and pollution-free, and the lock catch riveting nut process processing efficiency is high, and the surface is smooth after processing and does not need to increase manual polishing and grinding cost, thereby greatly reducing the cost.

[0005] In order to realize the above-mentioned purpose, the utility model is through the following technical scheme to realize: a high-strength lock catch riveting nut, including the nut body, wherein: the middle part of the nut body is provided with a blind hole, the blind hole is provided with an internal thread, the opening end of the blind hole is provided with a stamping cutting material eave, one end of the nut body located the stamping cutting material eave is provided with the polygonal material clamping closing edge, the material clamping closing edge and the stamping cutting material eave are provided with the lock catch groove.

[0006] Further, as an improvement of the utility model technical scheme, the back of the nut body is provided with a part code and a part strength identification.

[0007] Further, as an improvement of the technical scheme of the utility model, the end face of the punch cutting material eave is higher than the end face of the material clamping closing edge.

[0008] Further, as an improvement of the technical scheme of the utility model, the end face of the punch cutting material eave is higher than the end face of the material clamping closing edge.

[0009] Further, as an improvement of the technical scheme of the utility model, the punch die further comprises an upper die and a lower die, the middle end face of the upper die is provided with an upper die punch, and the inside of the upper die is provided with a waste material discharge port in the form of a taper.

[0010] Further, as an improvement of the technical scheme of the utility model, the middle part of the lower die is provided with a lower die positioning hole matched with the shape of the nut body.

[0011] Further, as an improvement of the technical scheme of the utility model, one end of the upper die and the lower die assembly is an upper die plane, and one end of the lower die and the upper die assembly is a lower die plane.

[0012] The puncture flanging riveting bolt and the flanging riveting process have the technical advantages of environmental protection, high efficiency, high strength, stability and cost reduction.

[0013] 1. The lock riveting nut product replaces the welded nut, and there is no toxic gas generated by welding, and the processing process is environmentally friendly and pollution-free.

[0014] 2. The stamping equipment instantaneously rivets and processes with high efficiency, and can realize automatic equipment riveting and processing with higher efficiency.

[0015] 3. The mechanical strength of the lock riveting nut product can be selected according to the use requirements to select the corresponding material for production, so as to solve the quality problem of brittle fracture of the welded nut with too high welding strength. And the lock riveting nut can be riveted on different metal materials.

[0016] 4. The lock riveting nut process has high processing efficiency, and the surface after processing is flat without the need to increase the cost of manual polishing and grinding, thereby greatly reducing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings:

[0018] Figure 1 It is a perspective structural schematic view of a high-strength lock riveting nut (hexagon) of the utility model;

[0019] Figure 2 It is a perspective structural schematic view of a high-strength lock riveting nut (quadrilateral) of the utility model;

[0020] Figure 3 It is a front structure schematic view of the high-strength lock buckle riveting nut (hexagon) of the utility model;

[0021] Figure 4 It is a back structure schematic view of the high-strength lock buckle riveting nut (hexagon) of the utility model;

[0022] Figure 5 It is a side structure schematic view of the high-strength lock buckle riveting nut (hexagon) of the utility model;

[0023] Figure 6 It is a side structure schematic view of the high-strength lock buckle riveting nut (hexagon) of the utility model;

[0024] Figure 7 It is a side structure schematic view of the high-strength lock buckle riveting nut (hexagon) of the utility model;

[0025] Figure 8 It is a side structure schematic view of the high-strength lock buckle riveting nut (hexagon) of the utility model;

[0026] In the drawing: 100-nut body; 1-locking groove; 2-inner thread; 3-stuffing closing edge; 4-punching cutting material eaves; 5-part code; 6-part strength identification; 7-blind hole; 8-upper die; 9-waste material discharge port; 10-waste material; 11-upper die plane; 12-upper die punch; 13-metal plate; 14-punching groove; 15-lock; 16-lower die plane; 17-lower die; 18-lower die positioning hole. DETAILED DESCRIPTION

[0027] The utility model will be described in detail below in combination with the drawings and specific embodiments, hereinafter with the illustrative embodiment of the utility model and the use of explanation to explain the utility model, but not as the limitation of the utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition and the like between the components in a certain specific posture (as shown in the drawing), if the specific posture changes, then the directional indication also changes accordingly.

[0029] In the utility model, unless another definite provision and limitation, the term "connect" should do the broad sense understanding, for example, "connect" can be fixed connection, also can be detachable connection, or become an integral whole;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements or the interaction relationship of two elements, unless another definite limitation.For the ordinary skill in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0030] In addition, in the utility model, the description such as "first", "second" is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features.Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature;In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skill in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0031] The utility model will be further described in detail below in combination with the drawings.

[0032] Please refer to Figures 1 to 8 The utility model provides a technical scheme: a high-strength lock buckle riveting nut, including nut body 100, wherein: the middle part of nut body 100 is provided with blind hole 7, the inner thread 2 is arranged in blind hole 7, the opening end of blind hole 7 is provided with stamping cutting material eave 4, the one end of nut body 100 at stamping cutting material eave 4 is provided with polygonal material clamping closing edge 3, and lock buckle groove 1 is formed between material clamping closing edge 3 and stamping cutting material eave 4.It should be noted that the lock buckle riveting nut is provided with inner thread 2, and the blind hole 7 is provided with a blind hole closed bottom.The design of material clamping closing edge 3 and stamping cutting material eave 4 forms a lock buckle groove 1 with a small mouth and a large bottom, which effectively guarantees the reverse push-out force after nut riveting processing.

[0033] Specifically, in the embodiment scheme, the back of the nut body 100 is provided with a part code 5 and a part strength identification 6.It should be noted that the nut body 100 is printed with product part code 5 and part strength identification 6, indicating the code, material and strength grade of the part.

[0034] Specifically, in the embodiment scheme, the material clamping closing edge 3 is hexagonal or quadrangular.It should be noted that the structure design of hexagon and quadrangle can maximize the rotation torque after product riveting processing, to meet the mechanical properties after stamping shaping.

[0035] Specifically, in the embodiment, the end face of the punched cutting eave 4 is higher than the end face of the clamping material closing edge 3.

[0036] Specifically, in the embodiment, the stamping die is further included; the stamping die includes an upper die 8 and a lower die 17; a middle end face of the upper die 8 is provided with an upper die punch 12; an inner part of the upper die 8 is provided with a waste material discharge port 9 in a tapering manner.

[0037] Specifically, in the embodiment, a middle part of the lower die 17 is provided with a lower die positioning hole 18 matched with the shape of the nut body 100.

[0038] Specifically, in the embodiment, one end of the upper die 8 and the lower die 17 is an upper die flat surface 11; one end of the lower die 17 and the upper die is a lower die flat surface 16.

[0039] Embodiment:

[0040] The utility model discloses a high -strength lock catch riveting nut and riveting process technical principle.

[0041] The lock catch riveting nut process technical principle is a kind of process technology with environmental protection high efficiency by special stamping die and equipment, using the metal plasticity of metal plate and the special structure and strength of lock catch riveting nut itself to carry out lock catch riveting assembly.

[0042] Referring to Figure 7 , stamping die is composed of upper die 8 and lower die 17, and the center part of upper die 8 is provided with upper die punch 12 and waste material discharge port 9 with taper design, and the center part of lower die 17 is provided with lower die positioning hole 18 matched with the shape and outer diameter size of nut, and lower die positioning hole 18 accurately positions nut body.The cooperation of upper die flat surface 11 and lower die flat surface 16 ensures that metal plate 13 maintains flatness under the condition of being subjected to stamping shaping.

[0043] Process technical process:

[0044] 1, first, lower die 17 and upper die 8 are fixed on stamping equipment, and pressure and stroke are adjusted.

[0045] 2, the face with part code 5 in the back of lock catch riveting nut is placed in the direction of lower die 17 to lower die positioning hole 18.

[0046] 3, the metal plate 13 prepared in advance is positioned and placed above the punched cutting eave 4, and metal plate 13 can be selected to be punched or pierced riveting according to actual needs, and metal plate with thickness below 1.0MM can be directly selected to be pierced riveting.

[0047] 3, start the punch equipment upper die 8 fast down, make the upper die punch 12 directly cut into the metal plate 13, make the metal plate 13 under the action of pressure instantaneous plastic deformation into the lock catch 15 fill the lock catch groove 1 stamping groove 14, at the same time, the stamping cutting material eaves 4 will waste 10 cut and extrude into the waste discharge port 9, waste 10 is discharged from the waste discharge port 9, the metal plate 13 is extruded flat under the pressure of the upper die plane 11 and the lower die plane 16, the lock catch riveting nut riveting process is completed, such as Figure 8 As shown.

[0048] The lock catch riveting nut thread and size design of the utility model are as follows:

[0049] Thread specification:

[0050] According to the use requirement, the ISO standard thread, national standard thread and American standard thread can be manufactured.

[0051] Common national standard thread specifications: M4, M5, M6, M8, M10, M12, etc.

[0052] Common American standard thread specifications: 8-24UNC, 10-24UNC, 1 / 4-20UNC, 5 / 16-18UNC, 3 / 8-16UNC, etc.

[0053] Lock catch riveting nut size design:

[0054] The lock catch riveting nut can be designed according to the actual use specifications and sizes, and the outer diameter and length size can be adjusted and designed according to the use requirement of the structural part.

[0055] The lock catch riveting nut product of the utility model has high thread strength and meets the need of piercing riveting, and generally selects an alloy material with adjustable strength through heat treatment for production and manufacturing.

[0056] In summary, the lock catch riveting nut process of the utility model has the technical advantages of environmental protection, high efficiency, high strength, stability and cost reduction.

[0057] 1. The lock catch riveting nut product replaces the welded nut, and there is no toxic gas generated by welding, and the processing process is environmentally friendly and pollution-free.

[0058] 2. The stamping equipment instantaneously rivets and processes with high efficiency, and can realize automatic equipment riveting and processing with higher efficiency.

[0059] 3. The mechanical strength of the lock catch riveting nut product can be selected according to the use requirement, the corresponding material is selected for manufacturing, the quality problem of brittle fracture caused by too high welding strength of the welded nut is solved, and the lock catch riveting nut can be riveted on different metal materials.

[0060] 4、The lock riveting nut process has high processing efficiency, and the surface after processing is smooth, so that manual polishing cost is not needed, thereby greatly reducing the cost.

[0061] The above describes the technical solutions provided by the embodiments of the present application in detail, and the principles and implementation manners of the embodiments of the present application are described by using specific examples; the above embodiment descriptions are only applicable to helping understand the principles of the embodiments of the present application; meanwhile, for the general technical personnel in the field, the embodiments of the present application will have changes in the specific implementation manners and application ranges, and the content of the present description should not be understood as limiting the embodiments of the present application.

Claims

1. A high-strength lock-buckle rivet nut comprising a nut body; characterized by: The middle part of the nut body is provided with a blind hole; the blind hole is provided with an internal thread; the opening end of the blind hole is provided with a stamping cutting material eave; one end of the nut body provided with the stamping cutting material eave is provided with a polygonal material clamping closing edge; a lock slot is arranged between the material clamping closing edge and the stamping cutting material eave.

2. A high-strength lock nut as defined in claim 1, wherein: The back of the nut body is provided with a part code and a part strength identification.

3. A high-strength lock nut as defined in claim 1, wherein: The material clamping closing edge is hexagonal or quadrangular.

4. A high-strength lock nut as defined in claim 1, wherein: The end surface of the stamping cutting material eave is higher than the end surface of the material clamping closing edge.

5. A high-strength lock nut as defined in claim 1, wherein: It also includes a stamping die; the stamping die includes an upper die and a lower die; the middle end surface of the upper die is provided with an upper die punch; the inside of the upper die is provided with a waste material discharge port arranged in a taper.

6. A high-strength lock nut as defined in claim 5, wherein: The middle part of the lower die is provided with a lower die positioning hole matched with the shape of the nut body.

7. A high-strength lock nut as defined in claim 5, wherein: One end of the upper die assembled with the lower die is an upper die plane; one end of the lower die assembled with the upper die is a lower die plane.

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