Forging, trimming and shaping die

Abstract

The utility model provides a forging, trimming and shaping die, which relates to the technical field of dies and comprises a fixed disc, a piston cylinder is movably arranged at the upper end of the fixed disc, a die underframe is arranged on the upper surface of the fixed disc, and a die frame is arranged on the upper surface of the die underframe. A worker puts a produced primary blank workpiece into the surface of the concave-convex die in the die, then the worker starts hydraulic equipment, loads are applied downwards through hydraulic pressure, the crankshaft is shaped through internal extrusion of the upper trimming punch, the upper trimming punch further descends, and the crankshaft is shaped. The workpiece drives the concave-convex film and the disc spring upper pad to descend, the disc spring is stressed and compressed, then the trimming upper punch is matched with the trimming concave-convex film, the purpose of trimming the workpiece is achieved, after shaping and trimming are completed, the executing mechanism withdraws the loading force, the disc spring resets, the workpiece slightly bounces up, clamping is convenient, the trimming and shaping process is rapid, and therefore the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a forging trimming and shaping mold. Background Art

[0002] The crankshaft is the most important part of the engine. It bears the force from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine. The crankshaft is subjected to the centrifugal force of the rotating mass, the periodically changing gas inertia force and the reciprocating inertia force, which makes the crankshaft bear bending and torsion loads. For the crankshaft of a vehicle engine, its crankshaft is a very important part. The existing process shaping and trimming process is divided into two processes, namely trimming and shaping. Shaping and trimming require the staff to transport the workpiece to the corresponding equipment position for operation. The steps of trimming and shaping are cumbersome, which seriously affects the production efficiency. Utility Model Content

[0003] The main purpose of the utility model is to provide a forging trimming and shaping die, which can effectively solve the problem that the shaping process and the trimming process in the background technology are divided into two processes, namely trimming and shaping, and shaping and trimming require workers to transport the workpieces to the corresponding equipment positions respectively for operation, and the steps of trimming and shaping are cumbersome, which seriously affects the production efficiency.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A forging trimming and shaping die comprises a fixed plate, wherein a piston cylinder is movably arranged on the upper end of the fixed plate;

[0006] The upper surface of the fixed plate is provided with a mold base, the upper surface of the mold base is provided with a mold frame, the upper surface of the mold base and inside the mold frame is provided with a disc spring lower pad, and the mold frame is movably provided with a disc spring upper pad;

[0007] The mold frame is provided with a trimming concavo-convex film, the upper surface of the disc spring upper pad is provided with a concavo-convex film, the mold frame is provided with an elastic member capable of compression and reset, and the elastic member is provided between the disc spring upper pad and the disc spring lower pad;

[0008] A workpiece is arranged on the upper surface of the concave-convex film, and an upper punch handle is arranged on the top of the piston cylinder.

[0009] Preferably, the elastic member is a spring.

[0010] Preferably, a trimming upper punch is fixedly mounted on the lower end of the upper punch handle.

[0011] Preferably, a guide column is provided on the upper surface of the mold base, and the concave-convex film is slidably arranged on the guide column body.

[0012] Preferably, a plurality of piston guide posts are fixedly mounted on the upper surface of the fixed plate, and the piston cylinder is slidably disposed on the body of each piston guide post.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) The staff puts the first blank workpiece that has been produced into the concave-convex membrane surface in the mold, and then starts the hydraulic equipment to apply load downward through the hydraulic pressure. Through the extrusion inside the trimming punch, the crankshaft is shaped. When the trimming punch further descends, the workpiece drives the concave-convex membrane and the disc spring upper pad to descend, and the disc spring is compressed. Then, the trimming punch and the trimming concave-convex membrane cooperate to achieve the purpose of trimming the workpiece. After the trimming is completed, the actuator removes the load force, the disc spring is reset, and the workpiece bounces up slightly, which is convenient for clamping. The trimming and shaping process is fast, thereby greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a forging trimming and shaping die of the utility model;

[0016] Figure 2 This is a front view structural schematic diagram of a forging trimming and shaping die of the utility model;

[0017] Figure 3 It is a side view structural schematic diagram of a forging trimming and shaping die of the utility model;

[0018] Figure 4 The utility model is a forging trimming and shaping die Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle.

[0019] In the figure: 1. upper punch handle; 2. trimming upper punch; 3. workpiece; 4. trimming concave-convex film; 5. concave-convex film; 6. disc spring upper pad; 7. die frame; 8. guide post; 9. elastic part; 10. disc spring lower pad; 11. die base frame; 12. fixed plate; 13. piston guide post; 14. piston cylinder. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments 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.

[0021] like Figure 1-Figure 4 As shown, a forging trimming and shaping die comprises a fixed plate 12, and a piston cylinder 14 is movably provided on the upper end of the fixed plate 12;

[0022] A mold base frame 11 is disposed on the upper surface of the fixed plate 12, a mold frame 7 is disposed on the upper surface of the mold base frame 11, a disc spring lower pad 10 is disposed on the upper surface of the mold base frame 11 and located inside the mold frame 7, and a disc spring upper pad 6 is movably disposed inside the mold frame 7;

[0023] A trimming concavoconvex film 4 is arranged in the mold frame 7, a concavoconvex film 5 is arranged on the upper surface of the disc spring upper pad 6, and an elastic member 9 capable of compression and reset is arranged in the mold frame 7, and the elastic member 9 is arranged between the disc spring upper pad 6 and the disc spring lower pad 10;

[0024] A workpiece 3 is arranged on the upper surface of the concave-convex film 5 , and an upper punch handle 1 is arranged on the top of the piston cylinder 14 .

[0025] The elastic member 9 is a spring.

[0026] A trimming upper punch 2 is fixedly mounted on the lower end of the upper punch handle 1 .

[0027] The staff connects the output end of the hydraulic equipment to the piston cylinder 14, and then fixes the assembled mold base 11 and the fixed plate 12, and then fixes the fixed plate 12 on its work surface. Then the staff puts the already produced initial blank workpiece 3 into the surface of the concave-convex membrane 5 in the mold, and then the staff starts the hydraulic equipment, applies load downward through the hydraulic pressure, and squeezes the inside of the trimming upper punch 2 to allow the crankshaft to achieve the purpose of shaping. When the trimming upper punch 2 further descends, the workpiece 3 drives the concave-convex membrane 5 and the disc spring upper pad 6 to descend, and the disc spring is compressed. Then the trimming upper punch 2 cooperates with the trimming concave-convex membrane 4 to achieve the purpose of trimming the workpiece 3. After the shaping and trimming is completed, the actuator cancels the load force, the disc spring resets, and the workpiece 3 bounces up slightly, which is convenient for clamping. The trimming and shaping process is fast, which greatly improves work efficiency.

[0028] In another embodiment of the present invention, a guide column 8 is disposed on the upper surface of the mold base 11 , and the concave-convex film 5 is slidably disposed on the column body of the guide column 8 .

[0029] By providing the guide pillar 8, when the workpiece 3 pushes the concave-convex film 5, the moving direction of the concave-convex film 5 will not deviate, thereby improving the stability of the trimming and shaping.

[0030] In another embodiment of the present invention, a plurality of piston guide posts 13 are fixedly mounted on the upper surface of the fixed plate 12 , and a piston cylinder 14 is slidably disposed on the body of each piston guide post 13 .

[0031] The sliding cooperation between the piston guide column 13 and the piston cylinder 14 improves the stability of the piston cylinder 14 during lifting and lowering, and further improves the stability of trimming and shaping.

[0032] The working principle of this forging trimming die:

[0033] When in use, the staff connects the output end of the hydraulic equipment with the piston cylinder 14, and then fixes the assembled mold base 11 and the fixed plate 12, and then fixes the fixed plate 12 on its work surface. Then the staff puts the already produced initial blank workpiece 3 into the surface of the concave-convex membrane 5 in the mold, and then the staff starts the hydraulic equipment, applies load downward through the hydraulic pressure, and squeezes the inside of the trimming upper punch 2 to allow the crankshaft to achieve the purpose of shaping. When the trimming upper punch 2 further descends, the workpiece 3 drives the concave-convex membrane 5 and the disc spring upper pad 6 to descend, and the disc spring is compressed. Then the trimming upper punch 2 cooperates with the trimming concave-convex membrane 4 to achieve the purpose of trimming the workpiece 3. After the shaping and trimming is completed, the actuator cancels the load force, the disc spring resets, and the workpiece 3 bounces up slightly, which is convenient for clamping. The trimming and shaping process is fast, which greatly improves work efficiency.

[0034] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A forging trimming die, comprising a fixed plate (12), characterized in that: A piston cylinder (14) is movably provided on the upper end of the fixed plate (12); A mold base frame (11) is arranged on the upper surface of the fixed plate (12), a mold frame (7) is arranged on the upper surface of the mold base frame (11), a disc spring lower pad (10) is arranged on the upper surface of the mold base frame (11) and located inside the mold frame (7), and a disc spring upper pad (6) is movably arranged inside the mold frame (7); The mold frame (7) is provided with a trimming concave-convex film (4), the upper surface of the disc spring upper pad (6) is provided with a concave-convex film (5), the mold frame (7) is provided with an elastic member (9) capable of compression and reset, and the elastic member (9) is provided between the disc spring upper pad (6) and the disc spring lower pad (10); A workpiece (3) is arranged on the upper surface of the concave-convex film (5), and an upper punch handle (1) is arranged on the top of the piston cylinder (14).

2. A forging trimming and shaping die according to claim 1, characterized in that: The elastic member (9) is a spring.

3. A forging trimming and shaping die according to claim 2, characterized in that: A trimming upper punch (2) is fixedly mounted on the lower end of the upper punch handle (1).

4. A forging trimming and shaping die according to claim 3, characterized in that: A guide column (8) is arranged on the upper surface of the mold base frame (11), and the concave-convex film (5) is slidably arranged on the column body of the guide column (8).

5. A forging trimming and shaping die according to claim 4, characterized in that: A plurality of piston guide posts (13) are fixedly mounted on the upper surface of the fixed plate (12), and the piston cylinder (14) is slidably disposed on the body of each piston guide post (13).

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