A cold extrusion connection device for metal components

Abstract

The invention discloses a cold extrusion connection device for metal components, comprising a base, a metal component, a threaded component and a stamping assembly, wherein a placement groove is provided on the base, the stamping assembly is located above the placement groove, a forming assembly is provided in the placement groove, the metal component and the threaded component are both installed on the forming assembly, the threaded component is located above the metal component, the stamping assembly presses the lower end of the threaded component and the central area of ​​the metal component into the forming assembly, the lower end of the threaded component is riveted with the metal component in the forming assembly, and the edge of the metal component is fitted with the outer side surface of the forming assembly under the stamping of the stamping assembly. The beneficial effect of the invention is that the structural design is simple and reasonable, and the threaded component can be quickly cold-extruded and connected with the metal component.

Description

Technical Field

[0001] The invention relates to the technical field of aviation component processing, in particular to a cold extrusion connection device for metal components. Background Art

[0002] Most of the existing aviation components are processed by brazing. The solder is heated to the melting temperature through high-frequency induction brazing, and the solder penetrates into the metal components through capillary phenomenon, thereby achieving a reliable connection between the metal components.

[0003] However, brazing is used to connect metal components, which has the following disadvantages: the temperature is too high during brazing, the joints of the metal components are easily deformed, which in turn affects the appearance and quality of the product, and is not well suited for precise processing of metal components.

[0004] Therefore, it is hoped that a technical solution can overcome or at least alleviate the above-mentioned defects of the prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and to design a cold extrusion connection device for metal components.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is a cold extrusion connection device for metal components, comprising a base, a metal component, a threaded component and a stamping assembly, the base is provided with a placement groove, the stamping assembly is located above the placement groove, a forming assembly is provided in the placement groove, the metal component and the threaded component are both installed on the forming assembly, the threaded component is located above the metal component, the stamping assembly presses the lower end of the threaded component and the central area of ​​the metal component into the forming assembly, the lower end of the threaded member is riveted with the metal component in the forming assembly, and the edge of the metal component is fitted with the outer side surface of the forming assembly under the stamping of the stamping assembly.

[0007] The threaded member is a circular tubular structure, the upper part of the outer side surface of the threaded member is provided with a thread, the lower part of the outer side surface of the threaded member is provided with a convex ridge, the metal member is a circular plate-shaped structure, the inner hole diameter value of the threaded member matches the inner hole diameter value of the metal member, the threaded member and the metal member are both sleeved on the forming component, the lower surface of the threaded member is pressed on the upper surface of the metal member, when the stamping component presses the threaded member downward, the lower end of the threaded member can squeeze open the inner hole of the metal member and insert into the forming component, the edge of the inner hole of the metal member bends downward under the push of the threaded member, the edge of the lower end of the threaded member is stretched open and bent upward after being inserted into the forming component, and the edge of the lower end of the threaded member can buckle the edge of the inner hole of the metal member to form a riveted structure.

[0008] The stamping assembly includes a stamping head, which performs lifting and lowering stamping actions under the drive of a hydraulic cylinder. The shape of the stamping head matches the shape of a placement slot and ensures that the stamping head can be pressed into the placement slot. A pressing groove is provided on the lower surface of the stamping head. The position of the pressing groove corresponds to the position of the forming assembly. The size of the pressing groove matches the size of the forming assembly. The pressing groove can cover the threaded member and the forming assembly. When the top surface of the pressing groove presses the top end of the threaded member, the lower surface of the stamping head is close to the upper surface of the metal member. When the lower end of the threaded member squeezes open the inner hole of the metal member, the lower surface of the stamping head presses the upper surface of the metal member and pushes the outer edge of the metal member to bend downward.

[0009] During the process of squeezing open the inner hole of the metal component at the lower end of the threaded component, the ridge extrude a short groove matching the ridge at the edge of the inner hole of the metal component. The pressing groove is a cylindrical groove, and the diameter of the pressing groove matches the forming component. When the punch head pushes the outer edge of the metal component to bend downward, the outer edge of the metal component can fit tightly with the outer side surface of the forming component.

[0010] The forming assembly includes a cylinder, the diameter of the cylinder matches the diameter of the pressing groove, a forming groove and a telescopic rod are provided on the top surface of the cylinder, the forming groove is a bowl-shaped structure, a mounting groove is provided at the center of the bottom surface of the forming groove, a spring is installed in the mounting groove, the lower end of the telescopic rod is vertically inserted into the mounting groove downward, a limit plate is provided in the mounting groove, the limit plate cannot pass through the upper end opening of the mounting groove, the limit plate supports the upper end opening of the mounting groove under the pushing of the spring elastic force, the upper surface of the limit plate is fixedly connected to the lower end of the telescopic rod, the upper end of the telescopic rod vertically extends upward from the upper port of the forming groove, and the upper end of the telescopic rod passes through the inner hole of the metal component and the inner hole of the threaded component in sequence and extends to the top of the threaded component.

[0011] The longitudinal section of the forming groove is "W"-shaped. When the threaded member is descending, the edge of the lower end of the threaded member can be stretched open and bent upward along the inner surface of the forming groove.

[0012] The telescopic rod is a round rod that is thin at the top and thick at the bottom. The diameter value of the upper part of the telescopic rod matches the diameter value of the inner hole of the threaded component and the diameter value of the inner hole of the metal component, and the diameter value of the lower part of the telescopic rod is larger than the diameter value of the inner hole of the threaded component and the diameter value of the inner hole of the metal component.

[0013] The end surface of the upper end of the telescopic rod is a spherical surface, and the end surface of the lower end of the telescopic rod is a plane.

[0014] Compared with the prior art, the cold extrusion connection device for metal components manufactured by the technical solution of the present invention has the following advantages:

[0015] The device uses cold extrusion to promote riveting between the lower part of the threaded component and the metal component, which effectively avoids the surface deformation caused by the high-temperature welding machine while ensuring the connection effect;

[0016] The device also drives the lower part of the threaded component and the central part of the metal component to achieve cold extrusion deformation by means of the punch head cooperating with the forming groove, thereby realizing rapid riveting of the lower part of the threaded component and the metal component, effectively ensuring the processing efficiency.

[0017] During the cold extrusion process, the device utilizes the convex ridge at the lower part of the outer side surface of the threaded component to extrude a short groove at the edge of the inner hole of the metal component, and through the cooperation of the convex ridge and the short groove, the relative rotation between the metal component and the threaded component after connection is avoided, thereby ensuring the stability of the connection between the metal component and the threaded component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a cold extrusion connection device for metal components according to the present invention;

[0019] Figure 2 It is a schematic cross-sectional structure diagram of a cold extrusion connection device for metal components according to the present invention;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of a cold extrusion connection device for metal components during stamping and forming according to the present invention;

[0021] Figure 4 It is a structural schematic diagram of the threaded member of the present invention;

[0022] Figure 5 is a schematic structural diagram of the telescopic rod of the present invention;

[0023] In the figure, 1, base; 2, metal component; 3, threaded component; 4, placement groove; 5, forming component; 6, thread; 7, ridge; 8, punch head; 9, pressing groove; 10, cylinder; 11, forming groove; 12, telescopic rod; 13, installation groove; 14, spring; 15, limit plate. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-5 As shown;

[0025] The innovation of the present application is that a forming component 5 is provided in the placement groove, the metal component and the threaded component are both installed on the forming component, the threaded component is located above the metal component, the stamping component presses the lower end of the threaded component and the central area of ​​the metal component into the forming component, the lower end of the threaded component is riveted with the metal component in the forming component, the edge of the metal component is fitted with the outer side surface of the forming component under the stamping of the stamping component, the threaded component is a circular tubular structure, the upper part of the outer side surface of the threaded component is provided with a thread 6, the lower part of the outer side surface of the threaded component is provided with a convex ridge 7, and the metal component is a circular ring The inner hole diameter value of the threaded member matches the inner hole diameter value of the metal member. The threaded member and the metal member are both sleeved on the forming component. The lower surface of the threaded member is pressed on the upper surface of the metal member. When the punching component presses the threaded member downward, the lower end of the threaded member can squeeze open the inner hole of the metal member and insert into the forming component. The edge of the inner hole of the metal member bends downward under the push of the threaded member. The edge of the lower end of the threaded member is stretched open and bent upward after being inserted into the forming component. The edge of the lower end of the threaded member can buckle the edge of the inner hole of the metal member to form a riveted structure.

[0026] The invention of the present application also lies in that the punching assembly includes a punching head 8, which performs lifting and lowering punching actions under the drive of a hydraulic cylinder. The shape of the punching head matches the shape of the placement groove and ensures that the punching head can be pressed into the placement groove. A pressing groove 9 is provided on the lower surface of the punching head. The position of the pressing groove corresponds to the position of the forming assembly, and the size of the pressing groove matches the size of the forming assembly. The pressing groove can cover the threaded member and the forming assembly. When the top surface of the pressing groove presses the top of the threaded member, the lower surface of the punching head is close to the upper surface of the metal member. When the lower end of the threaded member squeezes open the inner hole of the metal member, the lower surface of the punching head presses the upper surface of the metal member and pushes the outer edge of the metal member to bend downward. In the process of squeezing open the inner hole of the metal member, the lower end of the threaded member squeezes out a short groove matching the convex ridge at the edge of the inner hole of the metal member. The pressing groove is a cylindrical groove. The diameter size of the pressing groove matches the forming assembly. When the punching head pushes the outer edge of the metal member to bend downward, the outer edge of the metal member can fit tightly with the outer side surface of the forming assembly.

[0027] The creative point of the present application is that the forming component includes a cylinder 10, the diameter of the cylinder matches the diameter of the pressing groove, a forming groove 11 and a telescopic rod 12 are arranged on the top surface of the cylinder, the forming groove is a bowl-shaped structure, a mounting groove 13 is arranged at the center of the bottom surface of the forming groove, a spring 14 is installed in the mounting groove, the lower end of the telescopic rod is vertically inserted into the mounting groove, a limit plate 15 is arranged in the mounting groove, the limit plate cannot pass through the upper end opening of the mounting groove, the limit plate supports the upper end opening of the mounting groove under the push of the spring elastic force, the upper surface of the limit plate is fixedly connected to the lower end of the telescopic rod, and the upper end of the telescopic rod The end extends vertically upward from the upper end of the forming groove, the upper end of the telescopic rod passes through the inner hole of the metal component and the inner hole of the threaded component in turn and extends to the top of the threaded component, the longitudinal section of the forming groove is "W" shaped, and when the threaded component is descending, the edge of the lower end of the threaded component can be stretched open and bend upward along the inner surface of the forming groove, the telescopic rod is a round rod with a thin upper part and a thick lower part, the diameter value of the upper part of the telescopic rod matches the diameter value of the inner hole of the threaded component and the diameter value of the inner hole of the metal component, and the diameter value of the lower part of the telescopic rod is larger than the diameter value of the inner hole of the threaded component and the diameter value of the inner hole of the metal component.

[0028] The electronic devices used in this technical solution are all existing products. The technical solution of this application has no special requirements or changes to the structure of the above-mentioned electronic devices. The above-mentioned electronic devices are all conventional electronic devices.

[0029] In the process of implementing this technical solution, the person skilled in the art needs to connect all the electrical components in this case with the power supply adapted thereto through wires, and should select a suitable controller according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical components are electrically connected in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0030] During the implementation of the technical solution of the present application, the staff first puts the metal component and the threaded component on the upper part of the telescopic rod in sequence, and the state of the whole device is as follows: Figure 1 and Figure 2As shown; then start the hydraulic cylinder, the hydraulic cylinder drives the punch head to press down and drive the pressing groove to cover the upper part of the telescopic rod and the threaded member. When the top surface of the pressing groove presses the top of the threaded member, the lower surface of the punch head is close to the upper surface of the metal member. After the lower end of the threaded member squeezes open the inner hole of the metal member, the lower surface of the punch head presses the upper surface of the metal member and pushes the outer edge of the metal member to bend downward. In the process of squeezing open the inner hole of the metal member, the lower end of the threaded member squeezes out a short groove matching the convex rib at the edge of the inner hole of the metal member. When the punch head pushes the outer edge of the metal member to bend downward, the outer edge of the metal member can fit tightly with the outer side of the forming component; after the threaded member is inserted into the forming groove, the edge of its lower port can be stretched open by the bottom surface of the forming groove and bend upward along the inner surface of the forming groove, and the edge of the lower end of the threaded member can buckle the edge of the inner hole of the metal member to form a riveted structure. Under the limitation of the convex rib and the short groove, the threaded member and the metal member will not rotate relative to each other. The state of the entire device is as shown in Figure 3 shown.

[0031] Since the diameter of the lower part of the telescopic rod is larger than the diameter of the inner hole of the threaded component and the diameter of the inner hole of the metal component, when the punch head completes the punching and rises, the telescopic rod rises driven by the spring, and the lower part of the telescopic rod lifts the metal component and the threaded component connected together after forming, making it convenient for the staff to take away and replace them.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0033] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A cold extrusion connection device for metal components, comprising a base (1), a metal component (2), a threaded component (3) and a punching assembly, wherein a placement groove (4) is provided on the base, and the punching assembly is located above the placement groove, characterized in that: A forming component (5) is provided in the placement groove, the metal component and the threaded component are both mounted on the forming component, the threaded component is located above the metal component, the stamping component presses the lower end of the threaded component and the central area of ​​the metal component into the forming component, the lower end of the threaded component is riveted to the metal component in the forming component, and the edge of the metal component is fitted with the outer side surface of the forming component under the stamping of the stamping component; The threaded member is a circular tubular structure, the upper part of the outer side surface of the threaded member is provided with a thread (6), the lower part of the outer side surface of the threaded member is provided with a ridge (7), the metal member is a circular plate-shaped structure, the inner hole diameter value of the threaded member matches the inner hole diameter value of the metal member, the threaded member and the metal member are both sleeved on the forming component, the lower surface of the threaded member is pressed on the upper surface of the metal member, when the stamping component presses the threaded member downward, the lower end of the threaded member can squeeze open the inner hole of the metal member and insert into the forming component, the edge of the inner hole of the metal member is bent downward under the pushing of the threaded member, the edge of the lower end of the threaded member is stretched open and bent upward after being inserted into the forming component, and the edge of the lower end of the threaded member can buckle the edge of the inner hole of the metal member to form a riveted structure; The punching assembly comprises a punching head (8), which performs a lifting and stamping action under the drive of a hydraulic cylinder. The shape of the punching head matches the shape of the placement groove and ensures that the punching head can be pressed into the placement groove. The lower surface of the punching head is provided with a pressing groove (9), the position of the pressing groove corresponds to the position of the forming assembly, the size of the pressing groove matches the size of the forming assembly, and the pressing groove can cover the threaded component and the forming assembly. When the top surface of the pressing groove presses the top end of the threaded component, the lower surface of the punching head is close to the upper surface of the metal component. When the lower end of the threaded component squeezes open the inner hole of the metal component, the lower surface of the punching head presses the upper surface of the metal component and pushes the outer edge of the metal component to bend downward.

2. A metal component cold extrusion connection device according to claim 1, characterized in that: During the process of squeezing open the inner hole of the metal component at the lower end of the threaded component, the ridge extrude a short groove matching the ridge at the edge of the inner hole of the metal component. The pressing groove is a cylindrical groove, and the diameter of the pressing groove matches the forming component. When the punch head pushes the outer edge of the metal component to bend downward, the outer edge of the metal component can fit tightly with the outer side surface of the forming component.

3. A cold extrusion connection device for metal components according to claim 2, characterized in that: The forming assembly comprises a cylinder (10), the diameter of which matches the diameter of the pressing groove; a forming groove (11) and a telescopic rod (12) are provided on the top surface of the cylinder; the forming groove is a bowl-shaped structure; a mounting groove (13) is provided at the center of the bottom surface of the forming groove; a spring (14) is installed in the mounting groove; the lower end of the telescopic rod is vertically inserted into the mounting groove; a limit plate (15) is provided in the mounting groove; the limit plate cannot pass through the upper opening of the mounting groove; the limit plate supports the upper opening of the mounting groove under the pushing force of the spring; the upper surface of the limit plate is fixedly connected to the lower end of the telescopic rod; the upper end of the telescopic rod vertically extends upward from the upper end of the forming groove; the upper end of the telescopic rod passes through the inner hole of the metal component and the inner hole of the threaded component in sequence and extends to the top of the threaded component.

4. A metal component cold extrusion connection device according to claim 3, characterized in that: The longitudinal section of the forming groove is "W"-shaped. When the threaded member is descending, the edge of the lower end of the threaded member can be stretched open and bent upward along the inner surface of the forming groove.

5. A metal component cold extrusion connection device according to claim 3, characterized in that: The telescopic rod is a round rod that is thin at the top and thick at the bottom. The diameter value of the upper part of the telescopic rod matches the diameter value of the inner hole of the threaded component and the diameter value of the inner hole of the metal component, and the diameter value of the lower part of the telescopic rod is larger than the diameter value of the inner hole of the threaded component and the diameter value of the inner hole of the metal component.

6. A metal component cold extrusion connection device according to claim 5, characterized in that: The end surface of the upper end of the telescopic rod is a spherical surface, and the end surface of the lower end of the telescopic rod is a plane.

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