Stamping shaping riveting bolt structure
By designing a stamped and molded riveting bolt structure that includes a flange part, a stud part, and a stamped and molded part, the shortcomings of existing connection methods are solved, achieving an efficient, environmentally friendly, and stable connection, reducing costs and expanding the application range.
Patent Information
- Application Number
- CN202520159131.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing bolt-to-connecting-plate connection methods suffer from welding heat deformation and residual stress, affecting accuracy and reliability. Threaded connections increase processing costs and complexity, while stamped and shaped riveted bolts have structural and performance deficiencies.
A stamped and shaped riveting bolt structure is adopted, including a flange part, a stud part and a stamped and shaped part. The bolt and the riveting plate are firmly connected by a stamping equipment. The stability is enhanced by the material groove and anti-rotation teeth, and the efficient connection is achieved by the cooperation of the bottom die and the punch.
It achieves efficient and environmentally friendly connections without welding, improves mechanical strength and connection stability, reduces production costs, broadens the application range, and improves processing efficiency and connection quality.
Smart Images
Figure CN223609070U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bolt technical field, concretely relates to a stamping shaping riveting bolt structure. BACKGROUND
[0002] In the prior art, the connection between the bolt and the connecting plate is usually achieved by welding, threaded connection or the like. However, these connection methods have some disadvantages in some application scenarios. For example, although the welding connection has high strength, heat distortion and residual stress are easily generated during the welding process, which affects the precision and reliability of the connecting piece; the threaded connection requires that a threaded hole be previously machined on the connecting plate, thereby increasing the machining cost and complexity.
[0003] In order to solve the above problems, people have begun to try to use stamping shaping riveting technology to connect the bolt and the connecting plate. This technology forms a firm connection between the bolt and the connecting plate by stamping the bolt and the connecting plate with a stamping device. However, the existing stamping shaping riveting bolt still has some deficiencies in structure and performance. For example, the stamping shaping part of some bolts is designed unreasonably, resulting in insufficient connection strength and stability; some other bolts have problems such as high machining difficulty and cost. SUMMARY
[0004] The utility model aims at providing a stamping shaping riveting bolt structure, which aims to solve the problems in the prior art, improve the connection strength and stability, reduce the machining difficulty and cost, and enhance the applicability and universality.
[0005] To solve the above technical problems, the utility model adopts the following technical scheme:
[0006] A stamping shaping riveting bolt structure, comprising a bolt body and a riveting plate in pressure riveting cooperation with the bolt body, the bolt body comprising an integrally formed flange part, a stud part and a stamping shaping part coaxially connected between the flange part and the stud part, the flange part being provided with a clamping groove upwardly and inwardly recessed at a vertical included angle with the stamping shaping part; the riveting plate being provided with a pre-opened plate hole allowing the stud part and the stamping shaping part to extend into; after the bolt body and the riveting plate are stamped and shaped by a stamping device, the peripheral wall of the pre-opened plate hole of the riveting plate is plastically deformed, and the plastic deformation of the plate fills the clamping groove.
[0007] Further, the clamping groove is provided with anti-rotation teeth uniformly distributed along the circumference of the stamping shaping part, and the anti-rotation teeth are inserted into the riveting plate after the bolt body and the riveting plate are stamped and shaped by the stamping device.
[0008] Further, the stamping equipment comprises a bottom die and a punch, a bottom die center hole matched with the outer diameter size of the stud part is arranged at the center position of the bottom die, the bottom die center hole is used for positioning and protecting the stud part, a punch recess matched with the shape of the flange part is arranged at the center position of a punch plane of the punch, and the punch plane cooperates with a bottom die plane to keep the riveting plate flat when the riveting plate is subjected to pressure plastic forming.
[0009] Further, a bottom die plastic forming knife edge in a semicone structure is protruded upward at the hole position of the bottom die center hole, the bottom die plastic forming knife edge extrudes and cuts into the stamping plastic forming part along the direction perpendicular to the flange part of the stud part after the stamping equipment is subjected to stamping plastic forming, plastic deformation of the stamping plastic forming part is formed at the lower side of the stamping plastic forming part, and the plate plastic deformation is clamped between the plastic deformation of the stamping plastic forming part and the material clamping groove.
[0010] Further, the diameter of the flange part is greater than the diameter of the stamping plastic forming part, and the diameter of the stamping plastic forming part is greater than the diameter of the stud part.
[0011] Further, the thickness of the stamping plastic forming part is greater than the thickness of the riveting plate.
[0012] Further, the riveting plate is a metal plate.
[0013] Compared with the prior art, the stamping plastic riveting technology has the following beneficial effects:
[0014] The stamping plastic riveting technology realizes efficient and environmentally-friendly connection without welding through the precise cooperation of the flange, the stamping plastic forming part and the metal plate and the plastic deformation of the plate, improves the mechanical strength and connection stability, significantly reduces the production cost, and exhibits the beneficial effects of high efficiency, high strength, stability and cost reduction. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0016] Fig. 1 It is a bolt body structure schematic view of the present application;
[0017] Fig. 2 It is a bolt body structure schematic view of the present application;
[0018] Fig. 3 It is a bolt body structure schematic view of the present application; Detailed Implementation
[0019] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0022] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0023] like Figs. 1-3 As shown, the stamped and shaped riveting bolt structure of this utility model mainly includes a bolt body and a riveting plate 7 that is stamped and riveted with the bolt body. The bolt body is integrally formed from a flange part 3, a stud part 5, and a stamped and shaped part 4 coaxially connected between the two.
[0024] These include:
[0025] Flange part 3: The flange part 3 is located at the top of the bolt body, and its diameter is larger than that of the punch shaping part 4, so as to provide a larger connecting area and strength. At the vertical angle between the flange part 3 and the punch shaping part 4, a material clamping groove 1 is arranged upward and inward, which is used for accommodating and fixing the plastic deformation of the plate material of the riveting plate 7 during the punching process.
[0026] Punch shaping part 4: The punch shaping part 4 is located between the flange part 3 and the stud part 5, and its diameter is larger than that of the stud part 5 but smaller than that of the flange part 3. The thickness of the punch shaping part 4 is greater than that of the riveting plate 7, so as to ensure that sufficient plastic deformation can be formed to fill the material clamping groove 1 during the punching process.
[0027] Stud part 5: The stud part 5 is located at the bottom of the bolt body, and its diameter is the smallest, which is used for cooperating with a nut or other fasteners to realize bolt connection.
[0028] Riveting plate 7: The riveting plate 7 is a metal plate, and a pre-opened plate hole 17 is arranged on the riveting plate 7, which allows the stud part 5 and the punch shaping part 4 to extend into. During the punching process, the wall of the pre-opened plate hole 17 of the riveting plate 7 will be plastically deformed to fill the material clamping groove 1, so as to realize firm connection with the bolt body.
[0029] In order to further improve the stability of the connection, the anti-rotation tooth 2 is arranged in the material clamping groove 1 and is uniformly distributed along the circumference of the punch shaping part 4. During the punching process, the anti-rotation tooth 2 will be inserted into the riveting plate 7 to prevent the bolt body from rotating after connection.
[0030] The punching equipment of the utility model comprises a bottom die 11 and a punch 8. The bottom die 11 is provided with a bottom die center hole 13 matched with the outer diameter of the stud part 5 at the center position, which is used for positioning and protecting the stud part 5. The punch plane 10 of the punch 8 is provided with a punch concave position 9 matched with the shape of the flange part 3 at the center position, so as to ensure that the flange part 3 can remain flat during the punching process.
[0031] The orifice position of the bottom die center hole 13 is upwardly protruded with a bottom die shaping cutting edge 14, which is a half-cone structure. During the punching process, the bottom die shaping cutting edge 14 will extrude and cut into the punch shaping part 4 along the direction perpendicular to the flange part 3 of the stud part 5, so that the lower circumferential side of the punch shaping part 4 forms a plastic deformation 15. The plate plastic deformation 16 is clamped between the plastic deformation 15 of the shaping part and the material clamping groove 1, so as to realize firm connection with the bolt body.
[0032] In the stamping process, the bolt body is placed on the bottom die 11, and the stud portion 5 is inserted into the bottom die center hole 13. Then, the riveting plate 7 is placed on the bolt body, and the pre-opened plate hole 17 is aligned with the stud portion 5 and the stamping shaped portion 4. Then, the riveting plate 7 is stamped using the punch 8, so that the pre-opened plate hole 17 of the riveting plate 7 is plastically deformed to fill the jamming groove 1. At the same time, the bottom die shaping knife edge 14 will extrude into the stamping shaped portion 4 to form the shaped portion plastic deformation 15. Finally, the plate plastic deformation 16 is clamped between the shaped portion plastic deformation 15 and the jamming groove 1, achieving firm connection with the bolt body.
[0033] The utility model discloses can adopt stainless steel 304, stainless steel 316, carbon steel, copper, aluminium alloy etc. raw material according to different requirements and produce and manufacture. Stamping shaping riveting bolt can be designed according to the actual use specification size, and the outer diameter, length size can be adjusted and designed and made according to the use requirement of structural member.
[0034] The utility model discloses can adopt stainless steel 304, stainless steel 316, carbon steel, copper, aluminium alloy etc. raw material according to different requirements and produce and manufacture. Stamping shaping riveting bolt can be designed according to the actual use specification size, and the outer diameter, length size can be adjusted and designed and made according to the use requirement of structural member.
[0035] The above only is the preferred embodiment of the utility model, and does not use to limit the utility model, and any modification, equivalent replacement, improvement etc. that is made in the spirit and principle of the utility model should be contained in the protection scope of the utility model.
[0036] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.
Claims
1. A stamped plastic-formed riveting bolt structure, characterized in that, The device includes a bolt body and a riveting plate that is press-fitted with the bolt body. The bolt body includes an integrally formed flange portion, a stud portion, and a stamped and shaped portion coaxially connected between the flange portion and the stud portion. A retaining groove is provided at the vertical angle between the flange portion and the stamped and shaped portion. The riveting plate is provided with a pre-drilled hole that allows the stud portion and the stamped and shaped portion to extend into it. After the bolt body and the riveting plate are stamped and shaped by a stamping device, the peripheral wall of the pre-drilled hole of the riveting plate undergoes plastic deformation of the sheet metal, and the plastic deformation of the sheet metal is riveted and filled into the retaining groove.
2. The stamped plastic forming riveting bolt structure according to claim 1, characterized in that, The material slot is provided with anti-rotation teeth evenly distributed along the circumference of the stamping and shaping part. After the bolt body and the riveting plate are stamped and shaped by the stamping equipment, the anti-rotation teeth are embedded in the riveting plate.
3. The stamped plastic forming riveting bolt structure according to claim 2, characterized in that, The stamping equipment includes a bottom die and a punch. The bottom die has a center hole at its center that matches the outer diameter of the stud portion. The center hole is used to position and protect the stud portion. The punch has a punch recess at its center that matches the shape of the flange portion. The punch plane and the bottom die plane cooperate to keep the riveting plate flat when it is subjected to pressure and shaped.
4. The stamped plastic forming riveting bolt structure according to claim 3, characterized in that, The bottom mold center hole has an upward-protruding bottom mold shaping cutter. The bottom mold shaping cutter has a semi-conical structure. After the stamping equipment stamps and shapes the part, the bottom mold shaping cutter presses and cuts into the stamping and shaping part along the direction of the stud part perpendicular to the flange part, so that the lower circumference of the stamping and shaping part forms a plastic deformation of the shaping part. The sheet metal is plastically deformed and held between the plastic deformation of the shaping part and the material clamping groove.
5. The stamped plastic forming riveting bolt structure according to claim 4, characterized in that, The diameter of the flange portion is larger than the diameter of the stamped portion, and the diameter of the stamped portion is larger than the diameter of the stud portion.
6. The stamped plastic forming riveting bolt structure according to claim 5, characterized in that, The thickness of the stamped forming part is greater than the thickness of the riveting plate.
7. The stamped plastic forming riveting bolt structure according to claim 6, characterized in that, The riveting plate is a metal sheet.