Blank hot bending forming tool and using method thereof

Abstract

The invention relates to the technical field of simmering bending, in particular to a rough blank simmering bending forming tool and a using method thereof. Comprising an upper die and a lower die, a forming groove is formed in the upper surface of the lower die, a first adjusting plate is arranged in the forming groove, a first telescopic mechanism is arranged between the bottom face of the forming groove and the bottom face of the first adjusting plate, a first inclined face is arranged on the bottom face of the forming groove, and clamping mechanisms are arranged on the two sides of the first inclined face; a mounting groove and a second inclined plane parallel to the first inclined plane are arranged on the lower surface of the upper die, a second adjusting plate is arranged in the mounting groove, and a second telescopic mechanism is arranged between the upper surface of the second adjusting plate and the bottom surface of the mounting groove. According to the multi-angle forging hot bending device, the inclination angle of the first adjusting plate is adjusted through the first telescopic mechanism, the inclination angle of the second adjusting plate is adjusted through the second telescopic mechanism, hot bending cavities of different angles are formed among the upper surface of the first adjusting plate, the lower surface of the second adjusting plate, the first inclined plane and the second inclined plane, and hot bending of multi-angle forgings is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of bending, in particular to a rough blank bending forming tool and a use method thereof. Background Art

[0002] Bending long beam aviation die forgings requires bending the blank. There are generally two bending methods. One is to use a pad for free forging bending. This method requires a small investment, but the bending consistency is poor, which is not conducive to subsequent die forging. At the same time, folding defects may occur at the bending point, which requires machining and milling. In severe cases, the product may not be fully filled and caused to be scrapped. The second is to use a special bending die for forming. This method has good stability during production and is conducive to mass production. However, the differences in the angles of different forgings require the design of different bending dies, which is costly. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a blank bending forming tool capable of bending the blank at various angles and a use method thereof.

[0004] The technical solution adopted by the present invention to solve the technical problem is a rough blank bending forming tool, comprising an upper die and a lower die, the upper surface of the lower die is provided with a forming groove, a first adjusting plate is provided in the forming groove, one end of the first adjusting plate is hinged to the side wall of the forming groove, a first telescopic mechanism is provided between the bottom surface of the forming groove and the bottom surface of the first adjusting plate, the bottom surface of the forming groove is provided with a first inclined surface, one end of the first inclined surface is connected to the hinged end of the first adjusting plate, and the other end extends to the upper surface of the forming groove; clamping mechanisms are provided on both sides of the first inclined surface; The lower surface of the upper mold is provided with a mounting groove and a second inclined surface parallel to the first inclined surface, a second adjusting plate is provided in the mounting groove, one end of the second adjusting plate is hinged to the side wall of the mounting groove, a second telescopic mechanism is provided between the upper surface of the second adjusting plate and the bottom surface of the mounting groove, the second adjusting plate and the second inclined surface have an arc transition, the lower surface of the second adjusting plate is parallel to the upper surface of the first adjusting plate, and the rotation axis of the first adjusting plate and the rotation axis of the second adjusting plate are located in the same vertical plane.

[0005] Furthermore, the clamping mechanism includes a third telescopic mechanism, a groove is opened on the side wall of the forming groove, the third telescopic mechanism is arranged in the groove, the output end of the third telescopic mechanism is coaxially connected to a rotating block, a positioning groove is arranged on the end face of the rotating block, and the rotation axis of the rotating block is coplanar with the first inclined surface.

[0006] Furthermore, the positioning groove includes a first side surface and a second side surface that are perpendicular to each other, and an intersection line of the first side surface and the second side surface is coplanar with the first inclined surface.

[0007] Furthermore, there are at least two first telescopic mechanisms, which are arranged at intervals along the length direction of the first adjustment plate; and there are at least two second telescopic mechanisms, which are arranged at intervals along the length direction of the second adjustment plate.

[0008] Furthermore, the first telescopic mechanism and the second telescopic mechanism are both hydraulic cylinders, the upper end of the first telescopic mechanism is hinged to the bottom surface of the first adjustment plate, and the lower end is hinged to the bottom wall of the forming groove; the upper end of the second telescopic mechanism is hinged to the bottom surface of the installation groove, and the lower end is hinged to the upper surface of the second adjustment plate.

[0009] Furthermore, a first mold surface is arranged on the lower surface of the upper mold, and a second mold surface is arranged on the upper surface of the lower mold for use in conjunction with the first mold surface.

[0010] A method for using a rough blank bending forming tool, using the rough blank bending forming tool, comprising the following steps: S1: According to the bending angle of the forging, the first adjusting plate is adjusted by the first telescopic mechanism, and the second adjusting plate is adjusted by the second telescopic mechanism, so that the inclination angles of the first adjusting plate and the second adjusting plate are consistent, and the angle formed between the first adjusting plate and the first inclined surface is consistent with the bending angle of the forging, and the angle formed between the second adjusting plate and the second inclined surface is consistent with the bending angle of the forging; S2: preheating the upper die and the lower die, assembling them on the forging equipment after preheating, and spraying the release agent evenly on the upper surface of the first adjustment plate, the first inclined surface, the lower surface of the second adjustment plate, and the second inclined surface; S3: placing the blank between two clamping mechanisms, and clamping the blank with the clamping mechanisms; then driving the upper die to move downward, so that the blank is formed in the forming groove; S4: Release the clamping mechanism and take out the formed blank.

[0011] The beneficial effect of the present invention is that the inclination angle of the first adjustment plate is adjusted by the first telescopic mechanism, and the inclination angle of the second adjustment plate is adjusted by the second telescopic mechanism, so that bending cavities with different angles are formed between the upper surface of the first adjustment plate, the lower surface of the second adjustment plate, the first inclined surface, and the second inclined surface, thereby realizing the bending of forgings at various angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is the front view of the upper die; Figure 3 yes Figure 2 Section view along plane AA; Figure 4 It is the front view of the lower die; Figure 5 yes Figure 4 Sectional view along plane BB; Figure 6 is a schematic diagram of the rotating block.

[0013] Figure markings: 1-upper mold; 2-lower mold; 3-molding groove; 4-first adjustment plate; 5-first telescopic mechanism; 6-first inclined surface; 7-clamping mechanism; 701-third telescopic mechanism; 702-groove; 703-rotating block; 704-positioning groove; 705-first side surface; 706-second side surface; 8-installation groove; 9-second inclined surface; 10-second adjustment plate; 11-second telescopic mechanism; 12-first mating surface; 13-second mating surface. DETAILED DESCRIPTION

[0014] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0015] like Figure 1-Figure 6 As shown, a rough blank bending forming tool of the present invention comprises an upper die 1 and a lower die 2, wherein a forming groove 3 is provided on the upper surface of the lower die 2, a first adjusting plate 4 is provided in the forming groove 3, one end of the first adjusting plate 4 is hinged to the side wall of the forming groove 3, a first telescopic mechanism 5 is provided between the bottom surface of the forming groove 3 and the bottom surface of the first adjusting plate 4, a first inclined surface 6 is provided on the bottom surface of the forming groove 3, one end of the first inclined surface 6 is connected to the hinged end of the first adjusting plate 4, and the other end extends to the upper surface of the forming groove 3; clamping mechanisms 7 are provided on both sides of the first inclined surface 6; wherein the first adjusting plate 4 is a rectangular plate made of steel, which is hinged to the side wall of the forming groove 3 through a hinge seat, the first telescopic mechanism 5 can adopt an electric push rod or a cylinder, which is used to push the first adjusting plate 4 to rotate around the hinge seat, and the upper surface of the first adjusting plate 4 and the first inclined surface 6 together form the lower forming surface of the rough blank bending; the clamping mechanism 7 is used to clamp the rough blank to be bent, and limit the displacement of the rough blank in the left and right directions.

[0016] The lower surface of the upper mold 1 is provided with a mounting groove 8 and a second inclined surface 9 parallel to the first inclined surface 6. A second adjustment plate 10 is provided in the mounting groove 8. One end of the second adjustment plate 10 is hinged to the side wall of the mounting groove 8. A second telescopic mechanism 11 is provided between the upper surface of the second adjustment plate 10 and the bottom surface of the mounting groove 8. The second adjustment plate 10 and the second inclined surface 9 have an arc transition. The lower surface of the second adjustment plate 10 is parallel to the upper surface of the first adjustment plate 4. The rotation axis of the first adjustment plate 4 and the rotation axis of the second adjustment plate 10 are located in the same vertical plane. Among them, the second adjustment plate 10 is a rectangular plate made of steel, which is hinged to the side wall of the mounting groove 8 through a hinge seat. The second telescopic mechanism 11 can use an electric push rod or a cylinder to push the second adjustment plate 10 to rotate around the hinge seat. The lower surface of the second adjustment plate 10 and the second inclined surface 9 together form the upper forming surface of the blank bending; the lower surface of the second adjustment plate 10 is parallel to the upper surface of the first adjustment plate 4, the vertical distance between the first inclined surface 6 and the second inclined surface 9 is d1, and the vertical distance between the first adjustment plate 4 and the second adjustment plate 10 is d2, d1=d2, so that it can be ensured that the first inclined surface 6, the second inclined surface 9, the upper surface of the first adjustment plate 4, and the lower surface of the second adjustment plate 10 can all contact with the blank during the blank forming process.

[0017] In order to better realize the positioning of the blank in the forming groove 3, further, see Figure 4 and Figure 6The clamping mechanism 7 includes a third telescopic mechanism 701. A groove 702 is provided on the side wall of the forming groove 3. The third telescopic mechanism 701 is arranged in the groove 702. The output end of the third telescopic mechanism 701 is coaxially rotatably connected with a rotating block 703. A positioning groove 704 is provided on the end face of the rotating block 703. The rotation axis of the rotating block 703 is coplanar with the first inclined surface 6. Since the head of the blank will rotate during the bending process, a rotating block 703 is provided, and the rotating block 703 is rotatably connected to the output end of the third telescopic mechanism 701 through a bearing, and the positioning groove 704 is used to position the blank. Since the blank is mostly rectangular, the central angle corresponding to the positioning groove 704 is 90°, that is, the positioning groove 704 includes a first side surface 705 and a second side surface 706 that are perpendicular to each other, and the intersection of the first side surface 705 and the second side surface 706 is coplanar with the first inclined surface 6, the first side surface 705 is in a vertical state in the initial state, and the second side surface 706 is in a horizontal state in the initial state, and the opening direction of the positioning groove 704 should be opposite to the incoming direction of the blank. In this way, when in use, the corners of the blank are placed in the positioning groove 704, and when bending, the head of the blank will rotate around the center of the rotating block 703, and the rotation axis of the rotating block 703 is coplanar with the first inclined surface 6, so that the lower surface of the blank can be closely attached to the first inclined surface 6 after bending. A reset mechanism may also be provided at the connection between the third telescopic mechanism 701 and the rotating block 703. When the blank is bent, the rotating block 703 may be reset by the reset mechanism, so as to better position the next blank.

[0018] In order to improve the stability of the first adjustment plate 4 and the second adjustment plate 10 , further, there are at least two first telescopic mechanisms 5 , which are arranged at intervals along the length direction of the first adjustment plate 4 ; there are at least two second telescopic mechanisms 11 , which are arranged at intervals along the length direction of the second adjustment plate 10 .

[0019] Since the die forging machine usually uses hydraulic means to drive the upper die 1 to move, a hydraulic station is provided. Figure 3 and Figure 5 The first telescopic mechanism 5 and the second telescopic mechanism 11 are both hydraulic cylinders. The upper end of the first telescopic mechanism 5 is hinged to the bottom surface of the first adjustment plate 4, and the lower end is hinged to the bottom wall of the forming groove 3; the upper end of the second telescopic mechanism 11 is hinged to the bottom surface of the installation groove 8, and the lower end is hinged to the upper surface of the second adjustment plate 10.

[0020] In order to prevent the upper die 1 from moving excessively during the downward movement, causing the blank to deform in the thickness direction, further see Figure 3 and Figure 5The lower surface of the upper mold 1 is provided with a first mold surface 12 , and the upper surface of the lower mold 2 is provided with a second mold surface 13 used in conjunction with the first mold surface 12 .

[0021] A method for using a rough blank bending forming tool, using the rough blank bending forming tool, comprising the following steps: S1: According to the bending angle of the forging, the first telescopic mechanism 5 adjusts the inclination angle of the first adjustment plate 4, and the second telescopic mechanism 11 adjusts the inclination angle of the second adjustment plate 10, so that the inclination angles of the first adjustment plate 4 and the second adjustment plate 10 are consistent, and the angle formed between the first adjustment plate 4 and the first inclined surface 6 is consistent with the bending angle of the forging, and the angle formed between the second adjustment plate 10 and the second inclined surface 9 is consistent with the bending angle of the forging; S2: preheating the upper die 1 and the lower die 2, assembling them on the forging equipment after preheating, and spraying the release agent evenly on the upper surface of the first adjustment plate 4, the first inclined surface 6, the lower surface of the second adjustment plate 10 and the second inclined surface 9; S3: placing the blank between the two clamping mechanisms 7, and clamping the blank with the clamping mechanisms 7; then driving the upper die 1 to move downward, so that the blank is formed in the forming groove 3; S4: Release the clamping mechanism 7 and take out the formed blank.

[0022] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A blank bending tool, comprising an upper die (1) and a lower die (2), characterized in that: The upper surface of the lower mold (2) is provided with a molding groove (3), a first adjustment plate (4) is provided in the molding groove (3), one end of the first adjustment plate (4) is hinged to the side wall of the molding groove (3), a first telescopic mechanism (5) is provided between the bottom surface of the molding groove (3) and the bottom surface of the first adjustment plate (4), a first inclined surface (6) is provided on the bottom surface of the molding groove (3), one end of the first inclined surface (6) is connected to the hinged end of the first adjustment plate (4), and the other end extends to the upper surface of the molding groove (3); clamping mechanisms (7) are provided on both sides of the first inclined surface (6); The lower surface of the upper mold (1) is provided with a mounting groove (8) and a second inclined surface (9) parallel to the first inclined surface (6); a second adjustment plate (10) is provided in the mounting groove (8); one end of the second adjustment plate (10) is hinged to the side wall of the mounting groove (8); a second telescopic mechanism (11) is provided between the upper surface of the second adjustment plate (10) and the bottom surface of the mounting groove (8); the second adjustment plate (10) and the second inclined surface (9) have an arc transition; the lower surface of the second adjustment plate (10) is parallel to the upper surface of the first adjustment plate (4); and the rotation axis of the first adjustment plate (4) and the rotation axis of the second adjustment plate (10) are located in the same vertical plane.

2. A rough blank bending tool as claimed in claim 1, characterized in that: The clamping mechanism (7) comprises a third telescopic mechanism (701), a groove (702) is provided on the side wall of the molding groove (3), the third telescopic mechanism (701) is arranged in the groove (702), the output end of the third telescopic mechanism (701) is coaxially rotatably connected to a rotating block (703), a positioning groove (704) is provided on the end surface of the rotating block (703), and the rotating axis of the rotating block (703) is coplanar with the first inclined surface (6).

3. A rough blank bending tool as claimed in claim 2, characterized in that: The positioning groove (704) comprises a first side surface (705) and a second side surface (706) which are perpendicular to each other, and the intersection line of the first side surface (705) and the second side surface (706) is coplanar with the first inclined surface (6).

4. A rough blank bending tool as claimed in claim 1, characterized in that: There are at least two first telescopic mechanisms (5), which are arranged at intervals along the length direction of the first adjustment plate (4); there are at least two second telescopic mechanisms (11), which are arranged at intervals along the length direction of the second adjustment plate (10).

5. A blank bending tool as claimed in claim 1, characterized in that: The first telescopic mechanism (5) and the second telescopic mechanism (11) are both hydraulic cylinders; the upper end of the first telescopic mechanism (5) is hinged to the bottom surface of the first adjustment plate (4), and the lower end is hinged to the bottom wall of the forming groove (3); the upper end of the second telescopic mechanism (11) is hinged to the bottom surface of the installation groove (8), and the lower end is hinged to the upper surface of the second adjustment plate (10).

6. A blank bending tool as claimed in claim 1, characterized in that: The lower surface of the upper mold (1) is provided with a first mold surface (12), and the upper surface of the lower mold (2) is provided with a second mold surface (13) used in conjunction with the first mold surface (12).

7. A method for using a blank bending tool, using a blank bending tool as claimed in any one of claims 1 to 6, characterized in that: The following steps are included: S1: According to the bending angle of the forging, the first telescopic mechanism (5) is used to adjust the inclination angle of the first adjustment plate (4), and the second telescopic mechanism (11) is used to adjust the inclination angle of the second adjustment plate (10), so that the inclination angles of the first adjustment plate (4) and the second adjustment plate (10) are consistent, and the angle formed between the first adjustment plate (4) and the first inclined surface (6) is consistent with the bending angle of the forging, and the angle formed between the second adjustment plate (10) and the second inclined surface (9) is consistent with the bending angle of the forging; S2: preheating the upper die (1) and the lower die (2), assembling them onto the forging equipment after preheating, and uniformly spraying a release agent on the upper surface of the first adjustment plate (4), the first inclined surface (6), the lower surface of the second adjustment plate (10), and the second inclined surface (9); S3: placing the blank between two clamping mechanisms (7), and clamping the blank with the clamping mechanisms (7); then driving the upper die (1) to move downward, so that the blank is formed in the forming groove (3); S4: Release the clamping mechanism (7) and take out the formed blank.

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