Aluminum alloy plate integrated bending forming device for aviation industry and machining method

Abstract

The invention relates to the technical field of bending, and provides an aluminum alloy plate integrated bending forming device for the aviation industry, which comprises a bearing rack, a first bending die, second bending dies, a conveying part, a first stamping bending part and a second stamping bending part, the end of the second bending die is provided with a limiting inclined face and a bending fillet, the limiting inclined face is provided with an adsorption hole, the two sets of conveying pieces are symmetrically arranged on the two sides of the first bending die, and a plurality of sets of Y-direction limiting plates are arranged on the surfaces of the conveying pieces. By combining the step-by-step actions of the first stamping and bending part and the second stamping and bending part, the problem that an aluminum alloy plate is prone to springback or cracking due to traditional single-time bending is solved, the problem that the plate is prone to deviation or low in positioning precision in the traditional step-by-step bending process is solved, and the beneficial effect of being high in bending precision is achieved.

Description

Technical Field

[0001] The present invention relates to the field of bending technology, and in particular to an integrated bending and forming device and a processing method for aluminum alloy plates for aviation industry. Background Art

[0002] Aviation aluminum alloy sheets are widely used in the aviation industry due to their high strength, light weight, corrosion resistance and excellent processing performance. They cover multiple key components such as fuselage, wings, landing gear, doors, etc. The bending shape and angle of aviation sheets vary significantly depending on their specific use, material properties (such as aluminum alloy, titanium alloy) and structural function requirements.

[0003] After searching, the existing patent number CN111715759A discloses a metal plate bending and loading and unloading device for pipe clamp production, comprising a bracket body; a set of driving members fixedly connected to the right side of the bracket body; a set of sliding stamping members slidably connected to the top of the bracket body; the piston rod of the driving member is fixedly connected to the sliding stamping member; a set of bearing members is hingedly connected to the left side of the bracket body; a set of material blocking members are hingedly connected to the front and back sides of the inner side of the discharge port; and a set of material blocking driving members are slidably connected to the left side of the upper end surface of the bracket body. The present invention realizes automatic feeding and automatic unloading in conjunction with stamping, reducing manual operation and effectively avoiding safety accidents caused by operational errors during the stamping process, thereby improving safety and production efficiency.

[0004] Although the above bending devices can improve the bending efficiency, there are still the following defects in the bending of aviation aluminum alloy plates. Aviation aluminum alloy plates are mainly divided into one-piece stamping bending and step-by-step stamping bending. Taking the processing of wing ribs and mailbox brackets as an example, if one-piece stamping bending is directly adopted, stress concentration, rebound or cracking of the aluminum alloy plate are likely to occur. In the case of step-by-step stamping bending, the secondary bending mold cannot directly position and constrain the plate after the first bending. On the one hand, the rebound rate during the first bending cannot be reduced, and on the other hand, the accuracy during the secondary bending cannot be guaranteed, which easily leads to the problem of reduced accuracy of the bent plate. Summary of the Invention

[0005] The purpose of the present invention is to provide an integrated bending and forming device and processing method for aluminum alloy plates for use in the aviation industry, aiming to solve the problems existing in existing bending devices.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an integrated bending and forming device for aluminum alloy plates for the aviation industry, comprising a supporting frame and: A first bending die disposed at the bottom of the supporting frame; A second bending die is symmetrically arranged above the first bending die, wherein the end of the second bending die is provided with a limiting inclined surface and a bending fillet, and the limiting inclined surface is provided with an adsorption hole; A first stamping and bending part and a second stamping and bending part are respectively arranged longitudinally and horizontally in the supporting frame; Conveying parts, two groups of conveying parts are symmetrically arranged on both sides of the first bending mold, and several groups of Y-direction limiting plates are arranged on the surface of the conveying parts.

[0007] As a further solution of the present invention, the supporting frame is fixedly provided with a workbench and a suspension, the first stamping and bending part and the second bending mold are both fixedly connected to the suspension, the supporting frame is provided with a guide rail, and the conveying part is arranged in the guide rail.

[0008] As a further solution of the present invention, the second bending mold is a fixed plate, a sealed cavity is provided on the inner side of the fixed plate, the adsorption hole is connected to the sealed cavity, and threaded holes are provided on the fixed plate and the suspension surface.

[0009] As a further solution of the present invention, the conveying member includes a conveyor belt and a transmission roller, and the Y-direction limiting plate is fixedly arranged on the surface of the conveyor belt.

[0010] As a further solution of the present invention, an X-direction limiter is fixedly provided on the surface of the workbench, and the X-direction limiter is an elastic limiter.

[0011] As a further solution of the present invention, the thickness of the Y-axis limiting plate is 3mm-5mm.

[0012] As a further solution of the present invention, it also includes a vacuum pump, an air pipe is fixedly connected between the vacuum pump and the sealed cavity, and the vacuum pump is fixedly arranged on the suspension surface. It also includes a vacuum pump, an air pipe is fixedly connected between the vacuum pump and the sealed cavity, and the vacuum pump is fixedly arranged on the suspension surface.

[0013] As a further solution of the present invention, a material unloading inclined plate is fixedly provided on the side of the carrying frame facing away from the conveying member.

[0014] A processing method for integrally bending aluminum alloy plates for the aviation industry, comprising: S100, placing the plate to be processed between two sets of Y-axis limit plates, and using a conveyor to convey the plate to be processed between the first bending die and the second bending die; S200: Using a first stamping and bending component, a sheet to be processed is processed into a first bending angle in a first bending die. A Y-axis limit plate is used to prevent the first stamping and bending component from interfering with another sheet to be processed. The sheet to be bent in the middle automatically contacts the limiting inclined surface of the second bending die, and the suction holes of the limiting inclined surface adsorb and fix the sheet; S300: Without resetting the first stamping and bending part, use the second stamping and bending part to process the sheet into a second bending angle at the end of the second bending die, and the adsorption force of the adsorption holes on the sheet and the pressure of the first stamping and bending part are used to limit the sheet; S400: On the premise that the first stamping and bending part and the second stamping and bending part are reset, the conveyor is used to drive another plate to be processed to move, and the other plate to be processed can automatically complete the unloading of the processed plate in the process of entering between the first bending die and the second bending die.

[0015] The beneficial effects of the present invention are as follows: (1) The present application utilizes the symmetrical layout of the first bending die and the second bending die, combined with the step-by-step action of the first stamping bending part and the second stamping bending part, which not only solves the problem that the traditional single bending easily causes the aluminum alloy plate to rebound or crack, but also solves the problem that the plate is prone to offset or low positioning accuracy in the traditional step-by-step bending process, and has the characteristic of high bending accuracy.

[0016] (2) The conveyor is provided with a Y-axis limit plate and is symmetrically distributed on both sides of the first bending die. It can not only realize the integrated function of loading and unloading, but also ensure a safe distance between the two plates to prevent the first stamping bending part from interfering with the other plate to be processed. Under the premise of simplifying the mechanical structure or production process, it has the characteristics of automatic positioning, high efficiency and avoidance of collision of the bending structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the first stereogram of the present invention.

[0018] Figure 2 2 is a cross-sectional view of the second bending die according to an embodiment of the present invention.

[0019] Figure 3 This is a second perspective view of the present invention.

[0020] Figure 4 It is a first planar cross-sectional view of the present invention.

[0021] Figure 5 It is a second planar cross-sectional view of the present invention.

[0022] Reference numerals: 1-carrying frame, 11-working table, 12-X-axis limiter, 13-suspension, 14-guide rail, 15-unloading inclined plate; 2-first bending die; 3-first stamping and bending part; 4-second bending die, 41-limiting inclined plane, 411-bending fillet, 42-sealing cavity, 43-adsorption hole, 44-threaded hole; 5-second stamping and bending part; 6- conveying member, 61- Y-axis limiting plate; 7-vacuum pump, 71-trachea; 8-plate, 81-first bending angle, 82-second bending angle. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0025] See also Figures 1 to 5 In one embodiment of the present invention, an integrated bending and forming device for aluminum alloy plates for the aviation industry includes a supporting frame 1 and further includes: A first bending die 2 is provided at the bottom of the supporting frame 1; A second bending die 4 is symmetrically arranged above the first bending die 2. The end of the second bending die 4 is provided with a limiting inclined surface 41 and a bending fillet 411. The limiting inclined surface 41 is provided with a suction hole 43. The first stamping and bending part 3 and the second stamping and bending part 5 are respectively arranged longitudinally and horizontally in the supporting frame 1. The first stamping and bending part 3 and the second stamping and bending part 5 are both composed of a hydraulic cylinder and a punch head. The specific model and size of the punch heads of the two are adapted to the material of the plate 8, the first bending die 2 and the second bending die 4; The conveying member 6 , two groups of the conveying members 6 are symmetrically arranged on both sides of the first bending mold 2 , and a plurality of groups of Y-direction limiting plates 61 are arranged on the surface of the conveying member 6 .

[0026] See also Figure 1 Furthermore, the supporting frame 1 is fixedly provided with a workbench 11 and a suspension 13, the first stamping and bending part 3 and the second bending mold 4 are fixedly connected to the suspension 13, the supporting frame 1 is provided with a guide rail 14, and the conveying member 6 is arranged in the guide rail 14.

[0027] See also Figure 2 Furthermore, the second bending mold 4 is a fixed plate, a sealed cavity 42 is provided on the inner side of the fixed plate, the adsorption hole 43 is connected to the sealed cavity 42, and threaded holes 44 are provided on the surface of the fixed plate and the suspension 13.

[0028] See also Figure 1 and Figure 4Furthermore, an X-axis limiter 12 is fixedly provided on the surface of the workbench 11. The X-axis limiter 12 is an elastic limiter. The specific structure of the elastic limiter is not limited. It can elastically shrink during the feeding and bending process of the plate 8, which can not only play a limiting role, but also avoid interfering with the bent and deformed plate 8.

[0029] See also Figure 5 Furthermore, the thickness of the Y-axis limit plate 61 is 3mm-5mm, which is used to ensure a safe distance between the two plates 8.

[0030] See also Figure 4 Furthermore, it also includes a vacuum pump 7, an air pipe 71 is fixedly connected between the vacuum pump 7 and the sealing cavity 42, the vacuum pump 7 is fixedly set on the surface of the suspension 13, and the vacuum pump 7 can control the adsorption force through the air pipe 71, which is suitable for plates 8 of different thicknesses.

[0031] See also Figure 5 Furthermore, a blanking inclined plate 15 is fixedly provided on the side of the supporting frame 1 facing away from the conveying member 6. During the process of pushing and loading the new plate 8, the processed plate 8 can be triggered to automatically enter the blanking inclined plate 15 from the first bending mold 2 through physical contact.

[0032] In the technical solution of the present invention, the first bending mold 2 and the second bending mold 4 in this application both adopt a detachable solution, and the suspension 13 adopts a fixed solution. On the one hand, it is convenient to replace according to the specific processing requirements of the plate 8, and can be compatible with plates 8 of different bending angle thicknesses and materials. On the other hand, it can adapt to the bending requirements of high-precision aviation industry parts. Of course, the fixed suspension 13 solution can also be replaced with a longitudinally adjustable solution, which can also be compatible with plates 8 of different sizes.

[0033] A processing method for integrally bending aluminum alloy plates for the aviation industry, comprising: S100: Place the plate 8 to be processed between the two sets of Y-direction limit plates 61, and use the conveyor 6 to convey the plate 8 to the space between the first bending die 2 and the second bending die 4. At this time, the X-direction elastic limiter can fix the plate 8 in the X direction. The X-direction elastic limiter can elastically contract during the feeding and bending of the plate 8. S200, using the first stamping and bending part 3 to process the sheet 8 to be processed into the first bending angle 81 in the first bending die 2, the Y-axis limit plate 61 can not only position the sheet 8 to be processed from the Y direction, and the thickness of the Y-axis limit plate 61 is 3mm-5mm, but also ensure that there is a safe distance between the two sheets 8 to prevent the first stamping and bending part 3 from interfering with the other sheet 8 to be processed, the sheet 8 after being bent in the middle automatically contacts the limiting slope 41 of the second bending die 4, and the adsorption hole 43 of the limiting slope 41 adsorbs and fixes the sheet 8. It should be noted that a sensor needs to be embedded in the surface of the limiting slope 41 or fixed on the surface of the suspension 13. The sensor is a laser sensor or a pressure sensor. Under the premise that the limiting slope 41 of the second bending die 4 is used as the bending reference surface, the sensor can monitor whether the sheet 8 after being bent in the middle can reach a precise bending angle on the one hand, and can serve as a signal to control the start of the vacuum pump 7, so that the sheet 8 can be automatically fixed through the adsorption hole 43; S300, under the premise that the first stamping and bending part 3 is not reset, the second stamping and bending part 5 is used to process the plate 8 into the second bending angle 82 at the end of the second bending die 4, and the adsorption force of the adsorption hole 43 on the plate 8 and the pressure of the first stamping and bending part 3 are used to limit the plate 8. Compared with the traditional mechanical clamping and fixation, under the premise of simplifying the mechanical structure and maximizing the utilization of the mechanical structure, it can not only prevent the surface of the plate 8 from being damaged, but also improve the positioning accuracy and prevent the occurrence of unstable bending angles. Although the first stamping and bending part 3 and the second stamping and bending part 5 are not synchronized, the plate 8 after being bent in the first bending die 2 can directly contact the inclined surface of the second bending die 4, which can solve the problems of error accumulation and reduced positioning accuracy in the traditional step-by-step bending process; S400. On the premise that the first stamping and bending part 3 and the second stamping and bending part 5 are reset, the conveying part 6 is used to drive another plate 8 to be processed to move. In the process of the other plate 8 to be processed entering between the first bending die 2 and the second bending die 4, the processed plate 8 can be automatically unloaded.

[0034] In summary, the present application utilizes the symmetrical layout of the first bending die 2 and the second bending die 4, combined with the step-by-step action of the first stamping bending part 3 and the second stamping bending part 5, which not only solves the problem that the traditional single bending process easily causes the aluminum alloy sheet to rebound or crack, but also solves the problem that the sheet 8 is prone to deviation or low positioning accuracy during the traditional step-by-step bending process, and has the characteristic of high bending accuracy. The conveying part 6 is provided with a Y-axis limit plate 61 and is symmetrically distributed on both sides of the first bending mold 2. It can not only realize the integrated function of loading and unloading, but also ensure a safe distance between the two plates 8 to prevent the first stamping and bending part 3 from interfering with the other plate 8 to be processed. On the premise of simplifying the mechanical structure or production process, it has the characteristics of automatic positioning, high efficiency and avoidance of collision of the bending structure.

[0035] For those skilled in the art, although several embodiments and examples of the present invention have been described, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and their variations are included in the scope and spirit of the invention and are included in the invention described in the claims and their equivalents.

[0036] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An integrated bending and forming device for aluminum alloy plates for aviation industry, comprising a supporting frame (1), characterized in that: Also includes: A first bending die (2) is arranged at the bottom of the supporting frame (1); A second bending die (4) is symmetrically arranged above the first bending die (2), wherein the end of the second bending die (4) is provided with a limiting inclined surface (41) and a bending fillet (411), and the limiting inclined surface (41) is provided with an adsorption hole (43); A first stamping and bending part (3) and a second stamping and bending part (5) are respectively arranged longitudinally and horizontally in the supporting frame (1); Conveying parts (6), two groups of conveying parts (6) are symmetrically arranged on both sides of the first bending mold (2), and a plurality of groups of Y-direction limiting plates (61) are arranged on the surface of the conveying parts (6).

2. The integrated bending and forming device for aluminum alloy plates for aviation industry according to claim 1, characterized in that: The carrying frame (1) is fixedly provided with a workbench (11) and a suspension (13); the first stamping and bending part (3) and the second bending die (4) are both fixedly connected to the suspension (13); the carrying frame (1) is provided with a guide rail (14); and the conveying part (6) is arranged in the guide rail (14).

3. The integrated bending and forming device for aluminum alloy plates for aviation industry according to claim 2, characterized in that: The second bending die (4) is a fixed plate, a sealed cavity (42) is provided inside the fixed plate, the adsorption hole (43) is communicated with the sealed cavity (42), and threaded holes (44) are provided on the surfaces of the fixed plate and the suspension (13).

4. The integrated bending and forming device for aluminum alloy plates for aviation industry according to claim 1, characterized in that: The conveying member (6) comprises a conveying belt and a transmission roller, and the Y-direction limiting plate (61) is fixedly arranged on the surface of the conveying belt.

5. The integrated bending and forming device for aluminum alloy plates for aviation industry according to claim 1, characterized in that: An X-direction limiting member (12) is fixedly provided on the surface of the workbench (11), and the X-direction limiting member (12) is an elastic limiting member.

6. The integrated bending and forming device for aluminum alloy plates for aviation industry according to claim 1, characterized in that: The thickness of the Y-direction limiting plate (61) is 3 mm to 5 mm.

7. The integrated bending and forming device for aluminum alloy plates for aviation industry according to claim 3, characterized in that: It also includes a vacuum pump (7), an air pipe (71) is fixedly connected between the vacuum pump (7) and the sealing cavity (42), and the vacuum pump (7) is fixedly arranged on the surface of the suspension (13).

8. The integrated bending and forming device for aluminum alloy plates for aviation industry according to claim 1, characterized in that: A material unloading inclined plate (15) is fixedly provided on the side of the supporting frame (1) facing away from the conveying member (6).

9. A processing method for integrally bending aluminum alloy sheets for use in the aviation industry, applied to an integrally bending device for aluminum alloy sheets for use in the aviation industry as claimed in any one of claims 1 to 9, characterized in that: include: S100, placing the plate (8) to be processed between two sets of Y-direction limiting plates (61), and using the conveying member (6) to convey the plate (8) to be processed between the first bending die (2) and the second bending die (4); S200, using the first stamping and bending part (3) to process the plate (8) to be processed into a first bending angle (81) in the first bending die (2), the Y-direction limiting plate (61) is used to prevent the first stamping and bending part (3) from interfering with another plate (8) to be processed, the plate (8) after being bent in the middle automatically contacts the limiting inclined surface (41) of the second bending die (4), and the adsorption hole (43) of the limiting inclined surface (41) adsorbs and fixes the plate (8); S300, under the premise that the first stamping and bending part (3) is not reset, the plate (8) is processed into a second bending angle (82) at the end of the second bending die (4) by using the second stamping and bending part (5), and the adsorption force of the adsorption hole (43) on the plate (8) and the pressure of the first stamping and bending part (3) are used to limit the plate (8); S400, under the premise that the first stamping and bending part (3) and the second stamping and bending part (5) are reset, the conveying part (6) is used to drive another plate (8) to be processed to move, and the moved plate (8) to be processed can automatically complete the unloading of the processed plate (8) during the process of entering between the first bending die (2) and the second bending die (4).

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