High-precision steel plate bending machine for aerospace

Abstract

The utility model provides an aerospace high-precision steel plate bending machine which comprises a bending machine body, a support arranged at the bottom of the front end of the bending machine body, a sliding plate arranged on the support in a sliding mode and a fixing mechanism arranged above the sliding plate and used for fixing a steel plate. The connecting rod reset mechanism is hinged between the sliding plate and the fixing mechanism, and the telescopic air cylinder is arranged between the support and the sliding plate and used for driving the sliding plate to slide on the support. By means of the automatic operation process, accurate control over the steel plate in the bending process is achieved, errors and deviation possibly caused by manual supporting are reduced, the machining precision of the steel plate is remarkably improved, the labor intensity of operators is reduced, the working efficiency is improved, and potential safety hazards in the operation process are reduced.

Description

Technical Field

[0001] The utility model relates to the field of steel plate processing, in particular to a high-precision steel plate bending machine for aerospace. Background Art

[0002] In the aerospace field, the manufacturing of products has extremely high requirements for precision and quality. Structural parts of products such as aircraft, rockets, and satellites often need to be processed using high-precision steel plates to meet their complex structural designs and stringent performance requirements. During the processing, the steel plates need to be precisely bent at specific bending angles and shapes to ensure the overall performance and safety of the final product.

[0003] Bending machine is an important equipment for bending steel plates. It clamps and applies force to metal plates through the upper and lower molds. When the applied force exceeds the elastic limit of the metal material, the metal material will undergo plastic deformation, that is, bend. When the existing bending machine bends the steel plate, the operator needs to place the steel plate between the upper and lower molds, and bend the steel plate by moving the upper mold downward through hydraulic or CNC control. At the same time, during the bending process, the operator needs to support the steel plate to prevent the steel plate from shifting during the bending process. However, manual support is easily affected by human factors (such as fatigue, distraction, etc.), which in turn affects the processing accuracy of the steel plate. Moreover, when facing large or heavy steel plates, two people are usually required to cooperate and support to complete the bending operation, which not only increases labor intensity and production costs, but also increases the risk of injury to operators. Summary of the invention

[0004] The purpose of the utility model is to provide a high-precision steel plate bending machine for aerospace use, so as to solve the problems of low processing accuracy, easy influence of human factors, high manpower consumption, low processing efficiency and low safety factor in the bending process of existing aerospace steel plates.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A high-precision steel plate bending machine for aerospace use includes a bending machine body, a bracket arranged at the bottom of the front end of the bending machine body, a sliding plate slidably arranged on the bracket, a fixing mechanism arranged above the sliding plate for fixing the steel plate, a connecting rod reset mechanism hinged between the sliding plate and the fixing mechanism, and a telescopic cylinder arranged between the bracket and the sliding plate for driving the sliding plate to slide on the bracket.

[0007] Preferably, the connecting rod resetting mechanism includes: a first connecting rod having one end hinged to the sliding plate, a second connecting rod having one end hinged to the other end of the first connecting rod and the other end hinged to the fixing mechanism, and a reset spring connected between the first connecting rod and the second connecting rod. Multiple sets of connecting rod resetting mechanisms can be arranged between the sliding plate and the fixing mechanism.

[0008] Preferably, a groove is provided on the upper end surface of the sliding plate, and the first connecting rod is hinged to the side wall of the groove. When the connecting rod resetting mechanism is in an initial state, the connecting rod resetting mechanism is located in the groove, and the fixing mechanism is located on the upper end surface of the sliding plate.

[0009] Preferably, the fixing mechanism includes: an electric permanent magnetic suction cup whose upper end surface is flush with the top surface of the lower mold of the bending machine body, a fixing plate connected to the lower end of the electric permanent magnetic suction cup, and a steering assembly arranged at the lower end of the fixing plate for driving the electric permanent magnetic suction cup to rotate 90 degrees.

[0010] Preferably, the steering assembly includes: an installation box which is arranged below the fixed plate and is hollow inside, a fixed shaft which is fixedly connected to the lower end surface of the fixed plate at one end and rotates through the top wall of the installation box at the other end, a transmission gear located inside the installation box and fixedly sleeved on the fixed shaft, an irregular gear meshing with the transmission gear, and a first motor connected to the irregular gear through a rotating shaft.

[0011] Preferably, it also includes a positioning assembly arranged on the bracket, and the positioning assembly includes: a horizontal plate arranged on the bracket close to one end of the bending machine body, guide rods vertically arranged at both ends of the horizontal plate, a second motor arranged on the horizontal plate, a threaded rod fixedly connected to the output end of the second motor, and a positioning plate threadedly connected to the threaded rod and movably connected to the guide rod at both ends.

[0012] Preferably, a slide rail is provided at the upper end of the bracket, and a slider slidably connected to the slide rail is provided at the bottom end of the sliding plate.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] 1. The utility model can accurately fix the steel plate to be bent through the fixing mechanism, and drive the sliding plate to slide smoothly on the bracket through the telescopic cylinder, so as to accurately control the displacement of the sliding plate and the steel plate fixed thereon. During the bending process of the steel plate, the fixing mechanism cooperates with the connecting rod reset mechanism to firmly fix the raised part of the outer end of the steel plate during the bending process, so as to avoid the deviation of the steel plate during the bending process. After the steel plate is bent, the connecting rod reset mechanism can reset the fixing mechanism to the initial position, so as to realize the accurate control of the steel plate during the bending process, reduce the error and deviation that may be caused by manual support, thereby significantly improving the processing accuracy of the steel plate, reducing the labor intensity of the operator, improving the work efficiency, and reducing the potential safety hazards during the operation process.

[0015] 2. The utility model uses the coordinated action of the first connecting rod, the second connecting rod and the reset spring, so that when the bending machine is bending the steel plate, the connecting rod reset mechanism can support the fixing mechanism. After the steel plate is bent, the steel plate loses the bending force, and the fixing mechanism can return to the starting position smoothly and quickly under the action of the reset spring, which effectively enhances the stability of the entire bending machine and improves the processing quality and efficiency of the steel plate.

[0016] 3. The utility model provides a strong and stable suction force for the steel plate by setting an electric permanent magnetic suction cup, thereby ensuring the stable fixation of the steel plate during the processing, effectively avoiding the processing error caused by the movement of the steel plate, thereby improving the processing accuracy; by setting a steering component, the electric permanent magnetic suction cup can be rotated 90 degrees, thereby realizing the 90-degree rotation of the steel plate on the electric permanent magnetic suction cup, and the steel plate can be turned over and bent without manual intervention, simplifying the positioning and adjustment process of the steel plate, and effectively improving the production efficiency and convenience of operation;

[0017] 4. The utility model sets a positioning component at the front end of the bracket. When the steel plate is installed on the fixing mechanism, the positioning plate can rise through the coordinated action of the second motor, the guide rod and the threaded rod, so that the top surface of the positioning plate is higher than the upper end surface of the fixing mechanism, so that the positioning plate can support one side of the steel plate, thereby realizing precise positioning of the steel plate, avoiding the deviation of the steel plate during the installation process, providing an accurate reference for subsequent bending operations, and further improving the processing accuracy and production efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1This is a schematic diagram of the structure of a high-precision steel plate bending machine for aerospace;

[0020] Figure 2 This is a schematic diagram of the split structure of the fixing mechanism and sliding plate of a high-precision steel plate bending machine for aerospace;

[0021] Figure 3 This is a schematic diagram of the connecting rod reset mechanism structure of a high-precision steel plate bending machine for aerospace;

[0022] Figure 4 This is a schematic diagram of the steering assembly structure of a high-precision steel plate bending machine for aerospace;

[0023] Figure 5 This is a schematic diagram of the positioning component structure of a high-precision steel plate bending machine for aerospace;

[0024] Figure markings: 1-bending machine body, 2-bracket, 3-sliding plate, 4-fixing mechanism, 5-connecting rod reset mechanism, 6-telescopic cylinder, 7-first connecting rod, 8-second connecting rod, 9-reset spring, 10-groove, 11-electropermanent magnetic suction cup, 12-fixing plate, 13-installing box, 14-fixed shaft, 15-transmission gear, 16-irregular gear, 17-first motor, 18-cross plate, 19-guide rod, 20-second motor, 21-threaded rod, 22-positioning plate, 23-slide rail, 24-rotating shaft. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0028] In addition, the terms “first”, “second”, “third”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0029] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0032] like Figure 1-Figure 5 As shown, a high-precision steel plate bending machine for aerospace use includes a bending machine body 1, a bracket 2 arranged at the bottom of the front end of the bending machine body, a sliding plate 3 slidably arranged on the bracket 2, a fixing mechanism 4 arranged above the sliding plate 3 for fixing the steel plate, a connecting rod reset mechanism 5 hinged between the sliding plate 3 and the fixing mechanism 4, and a telescopic cylinder 6 arranged between the bracket 2 and the sliding plate 3 for driving the sliding plate 3 to slide on the bracket 2.

[0033] It should be noted that the telescopic cylinder 6 can be a hydraulic telescopic cylinder 6 or an electric telescopic cylinder 6 in the prior art, and the existing control system can be used in the bending machine to control the telescopic cylinder 6 and the fixing mechanism 4 to realize an automated operation process.

[0034] When the steel plate needs to be bent, the steel plate is first placed on the fixing mechanism 4 for precise fixing, and then the telescopic cylinder 6 is started to drive the sliding plate 3 to slide smoothly on the bracket 2 in the direction of the bending machine body 1 until the front end of the steel plate contacts the rear positioning component of the bending machine body 1, the telescopic cylinder is stopped, and the bending machine body 1 is started again, so that the upper mold of the bending machine body 1 moves downward to bend the steel plate. During the bending process, the outer end of the steel plate will be tilted, and the fixing mechanism 4 will also be tilted with the outer end of the steel plate under the action of the connecting rod reset mechanism 5, and the tilted part of the outer end of the steel plate is firmly fixed to avoid the steel plate from shifting during the bending process. After the steel plate is bent, the connecting rod reset mechanism 5 can reset the fixing mechanism 4 to the initial position to prepare for the next processing; the equipment realizes the automated operation of steel plate bending, thereby reducing the error and offset that may be caused by manual support, thereby significantly improving the processing accuracy of the steel plate, reducing the labor intensity of the operator, improving the work efficiency, and reducing the safety hazards during the operation.

[0035] like Figure 2 and Figure 3 As shown, the connecting rod reset mechanism 5 includes: a first connecting rod 7 with one end hinged to the sliding plate 3, a second connecting rod 8 with one end hinged to the other end of the first connecting rod 7 and the other end hinged to the fixing mechanism 4, and a reset spring 9 connected between the first connecting rod 7 and the second connecting rod 8. Multiple groups of connecting rod reset mechanisms 5 can be arranged between the sliding plate 3 and the fixing mechanism 4.

[0036] Among them, a groove 10 is provided on the upper end surface of the sliding plate 3, and the first connecting rod 7 is hinged to the side wall of the groove 10. When the connecting rod reset mechanism 5 is in the initial state, the connecting rod reset mechanism 5 is located in the groove 10, and the fixing mechanism 4 is located on the upper end surface of the sliding plate 3.

[0037] Before the steel plate bending operation, the connecting rod reset mechanism 5 is in an initial state. At this time, the first connecting rod 7 and the second connecting rod 8 are connected to each other through a hinge point, and are respectively connected to the sliding plate 3 and the fixing mechanism 4. The reset spring 9 is in an uncompressed or slightly compressed state, providing a potential energy reserve for the reset of the connecting rod. When the fixing mechanism 4 is tilted upward with the outer end of the steel plate during the steel plate bending process, the second connecting rod 8 moves accordingly. The first connecting rod 7 is connected to the sliding plate 3, and its position is relatively fixed. Therefore, the angle between the first connecting rod 7 and the second connecting rod 8 will change. In this process, the reset spring 9 is stretched, and the steel plate loses its bending force after the steel plate is bent. Under the action of the gravity of the fixing mechanism 4 and the steel plate, and the rebound force of the reset spring 9, the first connecting rod 7 and the second connecting rod 8 are pushed to reset to the initial state, so that the fixing mechanism 4 returns to the starting position smoothly and quickly, and the top surface of the sliding plate 3 supports the fixing mechanism 4, thereby effectively enhancing the stability and production efficiency of the high-precision steel plate bending machine for aerospace.

[0038] like Figure 2 As shown, the fixing mechanism 4 includes: an electric permanent magnetic suction cup 11 whose upper end surface is flush with the top surface of the lower mold of the bending machine body 1, a fixing plate 12 connected to the lower end of the electric permanent magnetic suction cup 11, and a steering component arranged at the lower end of the fixing plate 12 for driving the electric permanent magnetic suction cup 11 to rotate 90 degrees.

[0039] Among them, Figure 4 As shown, the steering assembly includes: a mounting box 13 which is arranged below the fixing plate 12 and is hollow inside, a fixing shaft 14 which is fixedly connected to the lower end surface of the fixing plate at one end and rotates through the top wall of the mounting box 13 at the other end, a transmission gear 15 which is located inside the mounting box 13 and fixedly sleeved on the fixing shaft 14, an irregular gear 16 meshing with the transmission gear 15, and a first motor 17 connected to the irregular gear through a rotating shaft 24.

[0040] It should be noted that the electric permanent magnetic suction cup 11 is a prior art, which can utilize the magnetic field generated by the electromagnetic coil to activate the ferromagnetic material to form a strong suction force, and tightly adsorb the workpiece on the surface of the suction cup. Its specific model and specifications can be selected according to actual conditions, and the first motor 17 is also a forward and reverse motor commonly used in the prior art.

[0041] When the steel plate is placed on the electric permanent magnetic suction cup 11, the electric permanent magnetic suction cup 11 provides a strong and stable suction force for the steel plate, thereby ensuring that the steel plate is stably fixed during the processing, preventing the steel plate from moving or falling, and effectively avoiding the processing errors caused by the movement of the steel plate, thereby improving the processing accuracy; when one side of the steel plate is processed and the other side needs to be bent, the first motor 17 drives the rotating shaft 24 to rotate, thereby driving the irregular gear 16 to rotate, and the periodic engagement and disengagement of the irregular gear 16 causes the transmission gear 15 and the fixed shaft 14 to rotate at a specific angle, realizing a 90-degree rotation of the electric permanent magnetic suction cup 11 and the steel plate thereon, and the steel plate flipping and bending work can be achieved without manual intervention, which simplifies the positioning and adjustment process of the steel plate, effectively improves the production efficiency and operation convenience, and the internal hollow installation box 13 provides an installation space for the steering assembly to protect the internal transmission mechanism.

[0042] like Figure 1 and Figure 5As shown, the bending machine of the utility model also includes a positioning assembly arranged on the bracket 2, and the positioning assembly includes: a horizontal plate 18 arranged on the bracket 2 close to one end of the bending machine body, a guide rod 19 vertically arranged at both ends of the horizontal plate 18, a second motor 20 arranged on the horizontal plate 18, a threaded rod 21 fixedly connected to the output end of the second motor 20, and a positioning plate 22 threadedly connected to the threaded rod 21 and movably connected to the guide rod 19 at both ends.

[0043] Before the steel plate is installed on the fixing mechanism 4, the second motor 20 can be started first to rotate the threaded rod 21. Under the guidance of the guide rod 19, the positioning plate 22 rises. When the top surface of the positioning plate 22 is higher than the upper end surface of the fixing mechanism 4, the second motor 20 is stopped, and then the steel plate is installed on the fixing mechanism 4, and one side of the steel plate is abutted against the positioning plate 22. This can achieve precise positioning of the steel plate and avoid the displacement of the steel plate during the installation process. The subsequent bending operation provides an accurate reference, further improving the processing accuracy and production efficiency of the equipment; when it is necessary to move forward for bending operation, start the second motor 20 to rotate in the direction and lower the positioning plate 22.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described by referring to the preferred embodiments of the utility model, those skilled in the art should understand that various changes can be made in form and details without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. High-precision steel plate bending machine for aerospace, characterized by: The invention comprises a bending machine body (1), a bracket (2) arranged at the bottom of the front end of the bending machine body (1), a sliding plate (3) slidably arranged on the bracket (2), a fixing mechanism (4) arranged above the sliding plate (3) and used for fixing the steel plate, a connecting rod reset mechanism (5) hinged between the sliding plate (3) and the fixing mechanism (4), and a telescopic cylinder (6) arranged between the bracket (2) and the sliding plate (3) and used for driving the sliding plate (3) to slide on the bracket (2).

2. The high-precision steel plate bending machine for aerospace according to claim 1, characterized in that: The connecting rod reset mechanism (5) comprises: a first connecting rod (7) having one end hinged to the sliding plate (3), a second connecting rod (8) having one end hinged to the other end of the first connecting rod (7) and the other end hinged to the fixing mechanism (4), and a reset spring (9) connected between the first connecting rod (7) and the second connecting rod (8). A plurality of connecting rod reset mechanisms (5) may be arranged between the sliding plate (3) and the fixing mechanism (4).

3. The high-precision steel plate bending machine for aerospace according to claim 2, characterized in that: The upper end surface of the sliding plate (3) is provided with a groove (10), and the first connecting rod (7) is hinged to the side wall of the groove (10). When the connecting rod reset mechanism (5) is in an initial state, the connecting rod reset mechanism (5) is located in the groove (10), and the fixing mechanism (4) is located on the upper end surface of the sliding plate (3).

4. The high-precision steel plate bending machine for aerospace according to claim 1, characterized in that: The fixing mechanism (4) comprises: an electric permanent magnetic suction cup (11) whose upper end surface is flush with the top surface of the lower mold of the bending machine body (1), a fixing plate (12) connected to the lower end of the electric permanent magnetic suction cup (11), and a steering component arranged at the lower end of the fixing plate (12) and used for driving the electric permanent magnetic suction cup (11) to rotate 90 degrees.

5. The high-precision steel plate bending machine for aerospace according to claim 4, characterized in that: The steering assembly comprises: a mounting box (13) which is arranged below the fixing plate (12) and is hollow inside, a fixing shaft (14) which is fixedly connected to the lower end surface of the fixing plate at one end and rotatably penetrates the top wall of the mounting box (13) at the other end, a transmission gear (15) which is located inside the mounting box (13) and fixedly sleeved on the fixing shaft (14), an irregular gear (16) which meshes with the transmission gear (15), and a first motor (17) which is connected to the irregular gear (16) via a rotating shaft (24).

6. The high-precision steel plate bending machine for aerospace according to claim 1, characterized in that: It also includes a positioning assembly arranged on the bracket (2), and the positioning assembly includes: a horizontal plate (18) arranged on the bracket (2) near one end of the bending machine body, a guide rod (19) vertically arranged at both ends of the horizontal plate (18), a second motor (20) arranged on the horizontal plate (18), a threaded rod (21) fixedly connected to the output end of the second motor (20), and a positioning plate (22) threadedly connected to the threaded rod (21) and movably connected to the guide rod (19) at both ends.

7. The high-precision steel plate bending machine for aerospace according to claim 1, characterized in that: The upper end of the bracket (2) is provided with a slide rail (23), and the lower end of the sliding plate (3) is provided with a sliding block slidably connected to the slide rail (23).

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