Thin-wall metal plate one-time rapid forming die

Abstract

The utility model discloses a thin-wall metal plate one-time rapid forming die, and relates to the technical field of airplane thin-wall metal plate part die manufacturing, and the technical scheme is that the thin-wall metal plate one-time rapid forming die comprises a forming die tire which is provided with a machining surface and a positioning surface, a plurality of positioning pins and through holes are arranged on the forming die tire, and one end of each positioning pin is provided with a pin cap; the pressure applying device comprises a cover plate, and a die handle is arranged on the top face of the cover plate. According to the utility model, the guide post and the guide sleeve are arranged, so that the die does not shake when working up and down, the quality stability of a part is ensured, the part does not move randomly along with the increase of pressure while the good plasticity of a material is ensured due to the positioning and pressing lugs on the part, and the cover plate is fixed with the die handle, so that the production efficiency is improved. And the die handle is connected with a top column on a top cylinder of a hydraulic machine, so that an operator can adjust a gap between the cover plate and a formed part, and the size requirement of the part can be effectively controlled by arranging the adjustable gap due to the fact that a material rebounds after the part is formed, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft thin-wall sheet metal part mold manufacturing, and more specifically, to a thin-wall sheet metal one-time rapid forming mold. Background Art

[0002] The manufacturing accuracy of thin-walled sheet metal parts of aircraft directly affects the flight performance and service life of the aircraft. Therefore, there are stringent requirements for the forming accuracy of parts. Realizing the precise, flexible and digital forming and manufacturing of sheet metal parts is a difficult problem that urgently needs to be solved. During the forming process of existing thin-walled parts, it is necessary to use molds to form two bends that are close to each other and easily cause mold interference. In order to ensure that there is no interference and good operation during the forming process of the parts, the parts are not deformed, the forming dimensions meet the requirements of the customer drawings, and there are no bumps on the appearance, the forming device of the mold directly affects the sinking quality of the parts. If the mold forming device is not well designed, it will directly lead to the scrapping of the parts. In addition, the existing forming methods of this type usually adopt segmented bending procedures, which usually have interference between the bending mold and the parts, and the size of the forming R angle is limited. At the same time, it is easy to deform and scratch, and manual shaping is required later, which reduces the quality of the parts and the work efficiency of the product.

[0003] Therefore, new solutions need to be proposed to solve this problem. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a thin-walled sheet metal one-time rapid prototyping die.

[0005] The above technical objectives of the present utility model are achieved through the following technical solutions: a thin-walled sheet metal one-time rapid prototyping mold, comprising a molding mold having a machining surface and a positioning surface adapted to the shape of a part to be processed, the molding mold being provided with a plurality of positioning pins and through holes for accommodating the positioning pins, one end of the positioning pin being provided with a pin cap for tightly abutting the part to be processed;

[0006] The pressure device comprises a cover plate arranged opposite to the processing surface, a die handle for connecting to a hydraulic press is provided on the top surface of the cover plate, and an arc groove for accommodating a pin cap is provided on the side of the cover plate facing away from the die handle.

[0007] The utility model is further configured as follows: the molding die is provided with a plurality of guide posts arranged perpendicular to the positioning surface, and the cover plate is provided with a plurality of guide sleeves capable of accommodating the guide posts to pass through.

[0008] The utility model is further configured as follows: two guide pillars are provided and are symmetrically arranged on the forming mold.

[0009] The utility model is further configured as follows: there are four through holes and they are symmetrically arranged on both sides of the molding mold, the aperture of one through hole on the same side is larger than the aperture of the other through hole, and when the pin cap is sleeved on the positioning pin, the outer edges of the two adjacent pin caps are pressed against each other.

[0010] The utility model is further configured as follows: a rubber pad is sleeved on the positioning pin, and the diameter of the rubber pad is larger than the diameter of the through hole.

[0011] The utility model is further configured as follows: the mold handle and the cover plate are fastened by using hexagon socket bolts to ensure stability during the sinking molding operation.

[0012] The utility model is further configured as follows: a fillet is provided at the connection between the processing surface and the positioning surface.

[0013] In summary, the utility model has the following beneficial effects: by using guide pins and guide sleeves as guides between the cover plate and the molding mold, the mold will not shake when operating up and down, ensuring the stability of the part quality, and also extending the service life of the mold. Since there are also positioning and clamping ears on the part, while ensuring good plasticity of the material, the part will not move around at will with the increase of pressure. Since the cover plate is fixed to the mold handle, and the mold handle is connected to the top column on the top cylinder of the hydraulic press, the operator can adjust the gap between the cover plate and the part after molding. Since the material rebounds after the part is molded, setting an adjustable gap can effectively control the size requirements of the part and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a partial cross-sectional view of the utility model;

[0016] Figure 3 This is a schematic structural diagram of the pressure-applying device in the present utility model;

[0017] In the figure: 1. Molding mold; 2. Processing surface; 3. Positioning surface; 4. Positioning pin; 5. Through hole; 6. Pin cap; 7. Cover plate; 8. Die handle; 9. Arc groove; 10. Guide column; 11. Guide sleeve; 12. Hexagon socket bolt; 13. Parts. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0019] In order to better describe and illustrate the embodiments of the present application, reference may be made to one or more drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of the utility model invention of the present application, any of the currently described embodiments or preferred methods.

[0020] In the description of the present invention, it should be noted that the terms "length", "width", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device referred to must have a specific orientation or operate in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0022] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0023] A thin-walled sheet metal rapid prototyping die, such as Figure 1 As shown, it includes a forming mold 1, which has a processing surface 2 and a positioning surface 3 that are adapted to the shape of the part 13 to be processed. The forming mold 1 is provided with a plurality of positioning pins 4 and through holes 5 for accommodating the positioning pins 4. One end of the positioning pin 4 is provided with a pin cap 6 for pressing against the part 13 to be processed. It also includes a pressure device. Specifically, the pressure device includes a cover plate 7 arranged opposite to the processing surface 2, a mold handle 8 for connecting to a hydraulic press is provided on the top surface of the cover plate 7, and an arc groove 9 for accommodating the pin cap 6 is provided on the side of the cover plate 7 facing away from the mold handle 8. Through the above arrangement, when the operator makes the part 13, he only needs to place the part 13 to be processed. On the processing surface 2, the positioning pin 4 is passed through the through hole 5 and the ears on both sides of the part 13 in sequence, and then the part 13 and the forming mold 1 are fixed by the hexagon socket bolt 12 to ensure that the part 13 does not deflect due to the force during the sinking forming operation. Then the pin cap 6 is set on one end of the positioning pin 4, and the hydraulic press is started so that the hydraulic press drives the cover plate 7 to descend. When the mold is squeezed and sunken, the cover plate 7 squeezes the bent surface of the part 13 and applies force to the forming mold 1, so that the sunken surface of the part 13 gradually fits the surface of the forming mold 1. As the hydraulic press stroke increases downward, the greater the pressure applied to the part 13, the more likely the part 13 will be formed and attached to the mold. In addition, the upper and lower mold clamping method can effectively ensure the fluidity of the material, ensure that the sunken area is not scratched, and remove the parts quickly.

[0024] The molding mold 1 is provided with a number of guide posts 10 arranged perpendicular to the positioning surface 3, and the cover plate 7 is provided with a number of guide sleeves 11 that can accommodate the guide posts 10 to pass through. Specifically, there are two guide posts 10 and they are symmetrically arranged on the molding mold 1. The coordinated use of the guide posts 10 and the guide sleeves 11 can ensure that the upper plate and the lower plate of the mold can be accurately aligned, thereby ensuring the positioning accuracy and processing accuracy of the mold during assembly and use. The use of the guide posts 10 and the guide sleeves 11 can avoid the mold from tilting when opening and closing, ensure that the top plate and the bottom plate of the mold maintain relative positions and directions, and keep the mold stable during the opening and closing process. At the same time, the symmetrically arranged guide posts 10 can provide better support and stability, ensure that the mold remains balanced when subjected to force, and reduce deformation or damage caused by uneven force.

[0025] There are four through holes 5 and they are symmetrically arranged on both sides of the molding mold 1. The aperture of one through hole 5 on the same side is larger than the aperture of the other through hole 5. When the pin cap 6 is mounted on the positioning pin 4, the outer edges of the two adjacent pin caps 6 are pressed against each other. By setting through holes 5 with different apertures, after the positioning pin 4 is inserted into the through hole 5, there will be no interference when the operator installs the pin cap 6. At the same time, the pin caps 6 pressed against each other can also provide better support and stability, enhance the durability of the mold, and ensure that the pin cap 6 will not shake during use. Furthermore, a rubber pad is mounted on the positioning pin 4 and the diameter of the rubber pad is larger than the diameter of the through hole 5. The rubber pad can absorb and reduce the vibration generated by the positioning pin 4 during work, thereby reducing noise and improving the stability of the mold, while also protecting the molding mold base and the cover plate 7.

[0026] The mold handle 8 and the cover plate 7 are fastened by using hexagon socket bolts 12 to ensure stability during the sinking molding operation. The connection between the processing surface 2 and the positioning surface 3 is provided with a rounded corner. Providing a rounded corner at the connection between the processing surface 2 and the positioning surface 3 can reduce stress concentration, avoid breakage or damage caused by stress concentration at sharp corners, and improve the durability and reliability of the mold.

[0027] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A thin-walled sheet metal one-shot rapid prototyping mold, characterized by: The present invention comprises a molding die having a machining surface and a positioning surface adapted to the shape of the part to be machined, the molding die being provided with a plurality of positioning pins and through holes for accommodating the positioning pins, and one end of the positioning pin being provided with a pin cap for tightly abutting the part to be machined; The pressure device comprises a cover plate arranged opposite to the processing surface, a die handle for connecting to a hydraulic press is provided on the top surface of the cover plate, and an arc groove for accommodating a pin cap is provided on the side of the cover plate facing away from the die handle.

2. The thin-walled sheet metal one-step rapid prototyping mold according to claim 1, characterized in that: The molding mold is provided with a plurality of guide pillars arranged perpendicular to the positioning surface, and the cover plate is provided with a plurality of guide sleeves capable of accommodating the guide pillars to pass through.

3. The thin-walled sheet metal one-step rapid prototyping mold according to claim 2, characterized in that: There are two guide pillars which are symmetrically arranged on the forming mold.

4. The thin-walled sheet metal one-step rapid prototyping mold according to claim 1, characterized in that: There are four through holes and they are symmetrically arranged on both sides of the molding mold. The aperture of one through hole on the same side is larger than the aperture of the other through hole. When the pin cap is sleeved on the positioning pin, the outer edges of the two adjacent pin caps are pressed against each other.

5. The thin-walled sheet metal one-step rapid prototyping mold according to claim 4, characterized in that: A rubber pad is sleeved on the positioning pin, and the diameter of the rubber pad is larger than the diameter of the through hole.

6. The thin-walled sheet metal one-step rapid prototyping mold according to claim 1, characterized in that: The mold handle and the cover plate are fastened by using hexagon socket bolts to ensure stability during the sinking molding operation.

7. The thin-walled sheet metal one-step rapid prototyping mold according to claim 1, characterized in that: A fillet is provided at the connection between the processing surface and the positioning surface.

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