Die holder for preforming machine selected during automatic forging of precisely-forged blade

Abstract

The invention belongs to the technical field of automatic forging, and discloses a die holder for a preforming machine, which is selected during automatic forging of a precisely-forged blade, and can realize continuous implementation of horizontal forging (extrusion upsetting and upsetting) and vertical forging processes under one-heating-number heating through symmetrical design of an upper die holder and a lower die holder. The multi-die-cavity structure allows forging dies with different technological purposes to be installed at the same time, and the limitation of single-station machining of a traditional die holder is broken through. A die cavity three-face equipment precision base plate guarantees the precision of a die installation reference face, and a die locking device can be adjusted through a bolt. The unique wedge-shaped block locking device drives the wedge-shaped block to do linear motion through the tensioning screw, and the die replacement operation is simplified. And the punch fixing device adopts a spring automatic rebound design, and can be quickly reset after forging is completed, so that the equipment overload risk is avoided, and the matching precision of the punch and the female die is ensured. The specially-arranged safety area provides an avoiding space for a robot clamp, so that blanks are rapidly transferred among multiple stations. By means of the integrated design, multiple procedures can be completed through single heating, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automated forging, and in particular relates to a die base for a preforming machine selected for automated forging of precision forged blades. Background Art

[0002] Forging dies are commonly used in the forging of aircraft engine blades. Due to the unique nature of the materials used, the blade forming process may involve one or more steps, each of which requires the design of a specific mold cavity or the use of a specific forming method. To meet the requirements of the preforming machine, one or more dies are simultaneously loaded into a dedicated die holder. The die holder is then mounted on the upper and lower work surfaces of the preforming machine, allowing the blade to be heated and forged in one step, completing one or more steps.

[0003] The existing forging die base is only suitable for the forging process in a single direction (horizontal or vertical), and the replacement of the die is cumbersome, resulting in low production efficiency. During the use of the die base of the traditional flat forging machine, since the punch is installed on the horizontal slide of the press, the accuracy depends on the guide rail clearance accuracy of the equipment slide, which cannot meet the requirements of the precision forging blade extrusion forming, and is prone to equipment overload, damage to the die (punch) and other faults. The die base structure of the traditional flat forging machine is not suitable for the precision forging blade preforming machine, and cannot meet the use requirements of automated forging production conditions. Summary of the Invention

[0004] The present invention provides a die base for a preforming machine selected for the automated forging of precision forged blades, which solves the problem that the existing forging die base is only suitable for the forging process in a single direction (horizontal or vertical), and the replacement of the die is cumbersome and the production efficiency is low.

[0005] To achieve the above object, the present invention provides the following technical solutions: A die base for a preforming machine used in automated forging of precision forged blades comprises an upper die base and a lower die base, the upper die base and the lower die base being mounted on upper and lower work surfaces of the preforming machine, respectively. The upper die base and the lower die base are adapted to each other and have the same internal structure. The lower die base comprises: Multiple rectangular mold cavities, each mold cavity is respectively provided with a bottom pad, a side pad and an end pad on the bottom, left side and rear end face; each mold cavity is provided with a locking device on the right side; a safety area is provided between the rear end face of the mold cavity and the rear end face of the lower mold base; a punch fixing device is installed on the front end face of the lower mold base.

[0006] Preferably, the locking device includes a wedge block, a guide plate, a fixing plate and a tightening screw. The wedge block is fixed by the wedge block fixing plate, the wedge block guide plate is fixed to the lower mold base by bolts, and the tightening screw passes through the through hole on the front end surface of the mold base and is threadedly connected to the wedge block.

[0007] Preferably, a threaded hole is provided on the front end surface of the wedge block of the locking mechanism, and the tightening screw drives the wedge block to move linearly along the guide plate to tighten or loosen the mold by rotating.

[0008] Preferably, when the mold needs to be locked, the tightening screw is rotated clockwise, and the tightening screw drives the wedge block to move forward to achieve locking. When loosening, the tightening screw is rotated counterclockwise to push the wedge block backward to achieve opening.

[0009] Preferably, the punch fixing device includes a punch clamp, a punch guide device, a punch reciprocating baffle, a clamp baffle, a spring seat, a spring and a spring cover. The punch guide device is provided with multiple punch clamps corresponding to the die cavity. The rear end of the punch clamp is fixed by the punch reciprocating baffle and the clamp baffle, and the two ends of the spring are respectively fixed to the spring seat and the spring cover.

[0010] Preferably, the spring cover is nested and fixed on the punch reciprocating baffle.

[0011] Preferably, the punch holder performs linear reciprocating motion along the punch guide device, and the elastic force of the spring causes the punch to automatically reset after the die is closed forging.

[0012] Preferably, the bottom pad, side pads and end pads are fixed to the lower die base by screws.

[0013] Preferably, the safety area provides a stagnation space for the robot clamp to avoid interference with the moving parts of the mold base.

[0014] Preferably, the size of the mold cavity is larger than the size of all molds to be installed.

[0015] Compared with existing technologies, the present invention offers the following advantages: It provides a die base for a preforming machine suitable for automated precision forging of blades. The symmetrical design of the upper and lower die bases enables continuous horizontal forging (extrusion and upsetting) and vertical forging processes with a single heating cycle, overcoming the limitations of single-station die base processing. Precision backing plates on three sides of the die cavity ensure the accuracy of the die mounting reference surface, and the die locking mechanism is adjustable via bolts. A unique wedge block locking mechanism drives the linear motion of the wedge block via a tightening screw, simplifying die changes. The punch fixture utilizes a spring-loaded automatic rebound design, enabling rapid reset after forging, eliminating the risk of equipment overload while ensuring accurate fit between the punch and die. A specially designed safety zone provides clearance for robotic clamps, enabling rapid transfer of blanks between multiple stations. This integrated design allows multiple processes to be completed with a single heating cycle, improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic structural diagram of a die base for a preforming machine used in automated forging of precision forged blades according to the present invention; Figure 2 This is a schematic diagram of the lower die base structure of the present invention; Figure 3 It is a cross-sectional view of the structure of the present invention; Figure 4 is a cross-sectional view of the punch holder of the present invention; Figure 5 The punch guide device of the present invention; In the figure: 1-upper die base, 2-lower die base, 3-die cavity, 4-side pad, 5-end pad, 6-bottom pad, 7-safety area, 8-wedge block, 9-fixing plate, 10-guide plate, 11-tension screw, 12-punch holder, 13-punch guide device, 14-punch reciprocating baffle, 15-holder baffle, 16-spring seat, 17-spring, 18-spring cover. DETAILED DESCRIPTION

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0019] 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, it does not need to be further defined or explained in subsequent drawings.

[0020] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 limiting the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" and "set" 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 an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two elements.

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, an embodiment of the present invention provides a die base for a preforming machine selected for automated forging of precision forged blades, characterized in that it includes an upper die base 1 and a lower die base 2, the upper die base 1 and the lower die base 2 being respectively mounted on the upper and lower work surfaces of the preforming machine, the upper die base 1 and the lower die base 2 being adapted and having the same internal structure, the lower die base 2 comprising: Multiple rectangular mold cavities 3, the bottom, left side and rear end face of each mold cavity 3 are respectively provided with a bottom pad 6, a side pad 4 and an end pad 5, the right side of each mold cavity 3 is provided with a locking device, a safety area 7 is provided between the rear end face of the mold cavity 3 and the rear end face of the lower mold base 2, and the front end face of the lower mold base 2 is installed with a punch fixing device.

[0023] The symmetrical design of the upper and lower die bases enables continuous horizontal forging (extrusion and upsetting) and vertical forging processes in a single heating cycle. Extrusion and upsetting processes require high die base precision, which cannot be met by conventional horizontal forging dies. The multi-cavity structure allows for simultaneous installation of forging dies for different processes, overcoming the limitations of traditional single-station die base processing. Precision backing plates on three sides of the die cavity ensure accurate die mounting datum surfaces, and the die locking mechanism is adjustable via bolts. A unique wedge block locking mechanism drives linear motion of the wedge block via a tightening screw, simplifying die changes. The punch fixture features a spring-loaded automatic rebound design for rapid reset after forging, preventing overload and ensuring precise fit between the punch and die. A specially designed safety zone provides clearance for the robot clamp, enabling rapid transfer of billets between multiple workstations. This integrated design enables multiple processes to be completed in a single heating cycle, improving production efficiency and product quality.

[0024] The locking device includes a wedge block 8, a guide plate 10, a fixing plate 9 and a tightening screw 11. The wedge block 8 is fixed by the wedge block fixing plate 9, the wedge block guide plate 10 is fixed to the lower mold base 2 by bolts, and the tightening screw 11 passes through the through hole on the front end surface of the mold base and is threadedly connected to the wedge block 8.

[0025] The matching design of the wedge block 8 and the guide plate 10 ensures that there is no lateral deviation during the locking process, avoiding the stress concentration problem of traditional bolt locking.

[0026] A threaded hole is provided on the front end surface of the wedge block 8 of the locking mechanism, and the tightening screw 11 drives the wedge block 8 to move linearly along the guide plate 10 by rotation to tighten or loosen the mold.

[0027] When the mold needs to be locked, the tightening screw 11 is rotated clockwise, and the tightening screw 11 drives the wedge block 8 to move forward to achieve locking. When loosening, the tightening screw 11 is rotated counterclockwise to push the wedge block 8 backward to achieve opening.

[0028] By driving the linear motion of the wedge block by tightening the screw 11, the operation process of locking and releasing the mold is simplified and the intensity of manual operation is significantly reduced.

[0029] The punch fixing device includes a punch holder 12, a punch guide device 13, a punch reciprocating baffle 14, a holder baffle 15, a spring seat 16, a spring 17 and a spring cover 18. The punch guide device 13 is provided with a plurality of punch holders 12 corresponding to the die cavity 3. The rear end of the punch holder 12 is fixed by the punch reciprocating baffle 14 and the holder baffle 15. The two ends of the spring 17 are respectively fixed to the spring seat 16 and the spring cover 18. The punch holder 12 is as shown in FIG. Figure 4 As shown, the punch guide 13 is as shown in FIG. Figure 5 shown.

[0030] The punch guide device 13 ensures the linear motion of the punch and the matching accuracy between the punch and the die. The spring mechanism makes the punch automatically return to its original position after forging is completed to avoid the risk of equipment overload. The punch reciprocating baffle 14 realizes the linkage of multiple punch holders to ensure the consistency of multi-station action. The spring cover 18 is nested and fixed on the punch reciprocating baffle 14 .

[0031] The punch holder 12 makes a linear reciprocating motion along the punch guide 13, and the elastic force of the spring 17 causes the punch to automatically reset after the die is closed and forged.

[0032] The bottom plate 6, the side plates 4 and the end plates 5 are fixed to the lower die base 2 by screws.

[0033] The modular pad design facilitates replacement and maintenance, extending the service life of the mold base. The position of each pad can be adjusted individually to ensure mold installation accuracy.

[0034] The safety area 7 provides a stagnant space for the robot clamp to avoid interference with the moving parts of the mold base.

[0035] The size of the mold cavity 3 is larger than the sizes of all molds to be installed. The size of the mold cavity is designed taking into account the installation requirements of different molds and enhancing the applicability of the mold base.

[0036] like Figure 2 As shown, another embodiment of the present invention provides a die base for a preforming machine selected for automated forging of precision forged blades, comprising an upper die base 1 and a lower die base 2. The lower die base 2 has three rectangular die cavities 3 at a fixed position. The size of the die cavity 3 is slightly larger than the size of all the dies to be installed. The left side of the die cavity 3 is a side pad 4, which is fixed to the lower die base 2 by bolts. The rear end face of the die cavity 3 is an end pad 5, which is fixed to the lower die base 2 by bolts. A bottom pad 6 is provided on the bottom surface of the die cavity 3, which is fixed to the lower die base 2 by bolts; a robot jaw stagnation safety area 7 is designed between the die cavity 3 and the rear end face of the lower die base 2, as shown in FIG. Figure 2As shown; the right side of the mold cavity 3 is a locking device, which mainly includes a wedge block 8, a wedge block fixing plate 9, a wedge block guide plate 10 and a tightening screw 11. The wedge block fixing plate 9 and the wedge block guide plate 10 are respectively fixed to the lower mold base 2 by screws. The wedge block 8 can only make a linear motion along the length direction of the wedge block guide plate under the constraints of the wedge block guide plate 9 and the wedge block fixing plate 10. When the mold needs to be locked, the tightening screw 11 is rotated clockwise, and the tightening screw 11 drives the wedge block 8 to move forward to achieve locking. When loosening, the tightening screw 11 is rotated counterclockwise to push the wedge block 8 backward to achieve opening; the punch fixing device is located at the rear end face of the lower mold base 2, and the punch fixing device includes a punch clamp 12, a punch guide device 13, a punch reciprocating baffle 14, a clamp baffle Plate 15, spring seat 16, spring 17 and spring cover 18, the front end of the punch clamp 12 can be used to install a fixed punch, and the other end is installed in the punch guide device 13, which can make linear reciprocating motion within a certain range. The punch guide device 13 is fixed to the lower die base 2 by bolts, and the punch reciprocating baffle 14 is nested and fixed at the rear end of the three punch clamps 12. The clamp baffle 15 is fixed to the rear end surface of the punch clamp 12 by bolts, the spring seat 16 is fixed to the punch guide device 13 by bolts, and the spring cover 18 is nested and fixed on the punch reciprocating baffle 14. Two springs 17 are respectively fixed in the spring seat 16 and the spring cover 18; the upper die base 1 is also provided with a die cavity, side pads, end pads, bottom pads, safety areas, and locking devices corresponding to the lower die base 2.

[0037] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments and application fields. The above-mentioned specific embodiments are merely illustrative and instructive, and are not restrictive. A person skilled in the art, guided by the description, may devise various forms without departing from the scope of protection of the claims of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A die base for a preforming machine used in the automated forging of precision forged blades, characterized in that: The present invention comprises an upper die base (1) and a lower die base (2), wherein the upper die base (1) and the lower die base (2) are respectively mounted on the upper and lower working tables of the preforming machine, and the upper die base (1) and the lower die base (2) are adapted to each other and have the same internal structure, and the lower die base (2) comprises: A plurality of rectangular mold cavities (3) are provided, wherein the bottom, left side and rear end face of each mold cavity (3) are respectively provided with a bottom pad (6), a side pad (4) and an end pad (5); the right side face of each mold cavity (3) is provided with a locking device; a safety area (7) is provided between the rear end face of the mold cavity (3) and the rear end face of the lower mold base (2); and a punch fixing device is installed on the front end face of the lower mold base (2).

2. The die base for a preforming machine used in the automated forging of precision forged blades according to claim 1, characterized in that: The locking device comprises a wedge block (8), a guide plate (10), a fixing plate (9) and a tightening screw (11), wherein the wedge block (8) is fixed by the wedge block fixing plate (9), the wedge block guide plate (10) is fixed to the lower die base (2) by bolts, and the tightening screw (11) passes through the through hole on the front end surface of the die base and is threadedly connected to the wedge block (8).

3. The die base for a preforming machine used in the automated forging of precision forged blades according to claim 2, characterized in that: A threaded hole is provided on the front end surface of the wedge block (8) of the locking mechanism, and the tightening screw (11) drives the wedge block (8) to move linearly along the guide plate (10) by rotation to tighten or loosen the mold.

4. The die base for a preforming machine used in the automated forging of precision forged blades according to claim 3 is characterized in that: When the mold needs to be locked, the tightening screw (11) is rotated clockwise, and the tightening screw (11) drives the wedge block (8) to move forward to achieve locking. When loosening, the tightening screw (11) is rotated counterclockwise to push the wedge block (8) backward to achieve opening.

5. The die base for a preforming machine used in the automated forging of precision forged blades according to claim 1 is characterized in that: The punch fixing device comprises a punch holder (12), a punch guide device (13), a punch reciprocating baffle (14), a holder baffle (15), a spring seat (16), a spring (17) and a spring cover (18), wherein the punch guide device (13) is provided with a plurality of punch holders (12) corresponding to the die cavity (3), the rear end of the punch holder (12) is fixed by the punch reciprocating baffle (14) and the holder baffle (15), and the two ends of the spring (17) are respectively fixed to the spring seat (16) and the spring cover (18).

6. The die base for a preforming machine used in the automated forging of precision forged blades according to claim 5, characterized in that: The spring cover (18) is nested and fixed on the punch reciprocating baffle (14).

7. The die base for a preforming machine used in the automated forging of precision forged blades according to claim 5, characterized in that: The punch holder (12) performs linear reciprocating motion along the punch guide device (13), and the elastic force of the spring (17) causes the punch to automatically reset after the die is closed and forged.

8. The die base for a preforming machine used in the automated forging of precision forged blades according to claim 1, characterized in that: The bottom pad (6), side pads (4) and end pads (5) are fixed to the lower die base (2) by screws.

9. The die base for a preforming machine used in the automated forging of precision forged blades according to claim 1, characterized in that: The safety area (7) provides a stagnant space for the robot clamp to avoid interference with the moving parts of the mold base.

10. The die base for a preforming machine used in the automated forging of precision forged blades according to claim 1, characterized in that: The size of the mold cavity (3) is larger than the size of all molds to be installed.

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