Forging die for crankshaft

Abstract

The utility model discloses a crankshaft forging die, which belongs to the technical field of crankshaft forging dies and comprises a base, a plurality of support columns fixedly mounted at the top of the base, a same placing plate fixedly mounted at the tops of the plurality of support columns, a lower die holder arranged at the top of the placing plate, and an upper die holder arranged right above the lower die holder. A groove is formed in the base, a rotating shaft is rotationally installed on the side wall of the groove, a first bevel gear is fixedly installed on the outer side of the rotating shaft, a second bevel gear is meshed with the outer side of the first bevel gear, a rotating shaft is fixedly installed in the second bevel gear, and a rotating disc is fixedly installed at the top of the rotating shaft. According to the crankshaft forging die, the rotating shaft, the rotating wheel, the first bevel gear, the second bevel gear, the rotating shaft, the rotating disc, the second connecting rod, the first connecting rod, a moving hole, a supporting block, a rubber pad and a clamping plate are matched with one another, so that crankshafts of different sizes and models need to be produced, the crankshaft forging die is convenient to replace, and the applicability is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft forging dies, in particular to a crankshaft forging die. Background Art

[0002] The crankshaft is one of the key parts of the automobile engine, and its performance directly affects the quality and life of the automobile engine. The crankshaft bears the maximum load and all power in the engine, and is subjected to strong bending moments and torques that change constantly in direction. At the same time, it is subjected to wear and tear from long-term high-speed operation. Therefore, the crankshaft material is required to have high rigidity, fatigue strength and good wear resistance. The crankshaft is generally composed of a main journal, a connecting rod journal, a crank, a balance block, a small head and a big head. A main journal, a connecting rod journal and a crank constitute a crank. It is first obtained by forging the crankshaft blank, and then the crankshaft product is obtained by finishing by turning, milling, grinding and other processes. The forging process of the crankshaft generally goes through the pre-forging process and the final forging process. In order to ensure the service life of the final forging groove, the pre-forging process is used before the final forging, which can not only reduce the wear of the final forging die cavity, but also obtain satisfactory internal quality of the forging.

[0003] The existing crankshaft forging die can only be used for casting. If crankshafts of different sizes and models need to be produced, it is inconvenient to replace the crankshaft forging die, and the applicability is not wide. Therefore, we propose a crankshaft forging die to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide a forging die for a crankshaft to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A forging die for a crankshaft comprises: a base, a plurality of support columns are fixedly mounted on the top of the base, a same placement plate is fixedly mounted on the top of the plurality of support columns, a lower die seat is arranged on the top of the placement plate, an upper die seat is arranged directly above the lower die seat, a groove is opened inside the base, and the groove

[0007] A rotating shaft is rotatably installed on the side wall, a bevel gear one is fixedly installed on the outer side of the rotating shaft, a bevel gear two is meshed on the outer side of the bevel gear one, a rotating shaft is fixedly installed inside the bevel gear two, a rotating disk is fixedly installed on the top of the rotating shaft, a plurality of No. 2 connecting rods are hinged on the top of the rotating disk, a No. 1 connecting rod is fixedly installed on the top of the plurality of No. 2 connecting rods, a supporting block is fixedly installed on the side where the plurality of No. 1 connecting rods are close to each other, a clamping plate is fixedly installed on the inner side of the supporting block, a rubber pad is fixedly installed on the inner side of the clamping plate, and the rubber pad is movably abutted against the four sides of the lower mold base.

[0008] Preferably, a U-shaped frame is fixedly installed on the top of the base, a hydraulic cylinder is fixedly installed on the bottom of the U-shaped frame, the output end of the hydraulic cylinder is fixedly connected to a sliding plate, a plurality of threaded holes are provided at the bottom of the sliding plate, the bottom of the sliding plate is movably abutted against the top of the upper mold base, and fixed blocks are fixedly installed on both sides of the upper mold base, the internal threads of the fixed blocks are connected to bolts, and the outer threads of the bolts are connected to the corresponding threaded holes.

[0009] Preferably, a rotating wheel is fixedly installed on the right side of the rotating shaft, a circular ring is fixedly installed on the outer side of the rotating shaft, a plurality of circular holes are opened on the outer side of the circular ring, a rectangular block is fixedly installed on the right side of the base, a plug rod is slidably inserted inside the rectangular block, a return spring is fixedly installed on the outer side of the plug rod, one side of the return spring is fixedly installed on the bottom of the rectangular block, and the outer side of the plug rod is movably inserted in the corresponding circular hole.

[0010] Preferably, the outer side of the rotating shaft is rotatably connected to the inside of the base, a plurality of movable holes are opened on the outer side of the placement plate, and the outer side of the No. 1 connecting rod is slidably connected to the corresponding movable holes.

[0011] Preferably, a sliding groove is provided inside the U-shaped frame, and the outer side of the sliding plate is slidably connected in the sliding groove.

[0012] Preferably, support legs are fixedly mounted on the bottom of the base at the front, back, left and right sides.

[0013] In the utility model, the forging die of the crankshaft is described, by pulling the insertion rod, the insertion rod is separated from the inside of the circular ring, and then the rotating wheel is rotated, thereby driving the rotating shaft to start rotating, and the rotating shaft drives the bevel gear one to rotate, thereby driving the bevel gear two meshing therewith to start rotating, thereby driving the rotating shaft to start rotating, and then the rotating shaft drives the rotating disk to start rotating, and then drives the No. 1 connecting rod to start moving along the moving hole, and further drives the clamping plate and the rubber pad to start moving away from the clamping of the lower die seat;

[0014] In the utility model, the forging die of the crankshaft is described, by placing the blank inside the lower die seat, and then manually starting the hydraulic cylinder, thereby driving the upper die seat to start moving downward, so that the upper die seat and the lower die seat are meshed, and the blank is further extruded and formed, and then the bolts are disengaged from the sliding plate and the fixed block by twisting the bolts, and then the upper die seat is replaced;

[0015] The utility model has a reasonable structural design. Through the mutual cooperation among the rotating shaft, the rotating wheel, the bevel gear one, the bevel gear two, the rotating shaft, the rotating disk, the second connecting rod, the first connecting rod, the moving hole, the supporting block, the rubber pad and the clamping plate, it is possible to produce crankshafts of different sizes and models, and it is convenient to replace the crankshaft forging mold, and the applicability is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a crankshaft forging die proposed by the utility model;

[0017] Figure 2 This is a schematic cross-sectional structure diagram of a crankshaft forging die proposed by the utility model;

[0018] Figure 3 for Figure 1 A partial enlarged view of part A;

[0019] Figure 4 for Figure 1 A partial enlarged view of part B.

[0020] In the figure: 1. base; 2. U-shaped frame; 3. lower die seat; 4. upper die seat; 5. hydraulic cylinder; 6. sliding plate; 7. placing plate; 8. support column; 9. fixed block; 10. bolt; 11. rotating shaft; 12. rotating wheel; 13. circular ring; 14. circular hole; 15. rectangular block; 16. plug rod; 17. reset spring; 18. clamping plate; 19. rubber pad; 20. support block; 21. connecting rod No. 1; 22. moving hole; 23. bevel gear No. 1; 24. bevel gear No. 2; 25. rotating shaft; 26. rotating disk; 27. connecting rod No. 2; 28. supporting leg. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-4 A forging die for a crankshaft comprises: a base 1, a plurality of supporting columns 8 are fixedly installed on the top of the base 1, a same placing plate 7 is fixedly installed on the top of the plurality of supporting columns 8, a lower die seat 3 is arranged on the top of the placing plate 7, an upper die seat 4 is arranged just above the lower die seat 3, a groove is opened inside the base 1, a rotating shaft 11 is rotatably installed on the side wall of the groove, a bevel gear 1 23 is fixedly installed on the outer side of the rotating shaft 11, a bevel gear 24 is meshed on the outer side of the bevel gear 1 23, a rotating shaft 25 is fixedly installed inside the bevel gear 24, a rotating disk 26 is fixedly installed on the top of the rotating shaft 25, a plurality of No. 2 connecting rods 27 are hinged on the top of the rotating disk 26, a No. 1 connecting rod 21 is fixedly installed on the top of the plurality of No. 2 connecting rods 27, a supporting block 20 is fixedly installed on the side where the plurality of No. 1 connecting rods 21 are close to each other, a clamping plate 18 is fixedly installed on the inner side of the supporting block 20, a rubber pad 19 is fixedly installed on the inner side of the clamping plate 18, and the rubber pad 19 is movably abutted against the four sides of the lower die seat 3.

[0023] In this embodiment, a U-shaped frame 2 is fixedly installed on the top of the base 1, and a hydraulic cylinder 5 is fixedly installed on the bottom of the U-shaped frame 2. The output end of the hydraulic cylinder 5 is fixedly connected to a sliding plate 6. A plurality of threaded holes are provided at the bottom of the sliding plate 6. The bottom of the sliding plate 6 is movably abutted against the top of the upper mold base 4. Fixed blocks 9 are fixedly installed on both sides of the upper mold base 4. The internal threads of the fixed blocks 9 are connected with bolts 10. The outer threads of the bolts 10 are connected to the corresponding threaded holes, which facilitates the movement of the upper mold base 4. At the same time, the upper mold base 4 is fixed by the bolts 10.

[0024] In this embodiment, a rotating wheel 12 is fixedly installed on the right side of the rotating shaft 11, a circular ring 13 is fixedly installed on the outer side of the rotating shaft 11, and a plurality of circular holes 14 are opened on the outer side of the circular ring 13; a rectangular block 15 is fixedly installed on the right side of the base 1, and a plug rod 16 is slidably inserted inside the rectangular block 15, and a return spring 17 is fixedly installed on the outer side of the plug rod 16, one side of the return spring 17 is fixedly installed on the bottom of the rectangular block 15, and the outer side of the plug rod 16 is movably inserted in the corresponding circular hole 14, so as to facilitate the control of the plug rod 16 to fix the rotating shaft 11.

[0025] In this embodiment, a sliding groove is provided inside the U-shaped frame 2, and the outer side of the sliding plate 6 is slidably connected in the sliding groove, so as to conveniently drive the upper mold base 4 to start moving along the sliding groove.

[0026] In this embodiment, the outer side of the rotating shaft 25 is rotatably connected to the inside of the base 1, a plurality of movable holes 22 are opened on the outer side of the placement plate 7, the outer side of the No. 1 connecting rod 21 is slidably connected to the corresponding movable holes 22, and support legs 28 are fixedly installed on the front, back, left and right sides of the bottom of the base 1, so that the clamping plate 18 can be driven by the No. 1 connecting rod 21 to clamp the lower mold base 3.

[0027] The working principle of the utility model is as follows: firstly, the blank is placed inside the lower die seat 3 manually, and then the hydraulic cylinder 5 is manually started, thereby driving the upper die seat 4 to start moving downward, so that the upper die seat 4 and the lower die seat 3 are meshed, and further the blank is extruded and formed. When it is necessary to produce crankshafts of different sizes and models, the insertion rod 16 is manually pulled to make the insertion rod 16 disengage from the inside of the ring 13, and then the rotating wheel 12 is rotated, thereby driving the rotating shaft 11 to start rotating, and the rotating shaft 11 drives the bevel gear 1 23 to start rotating, thereby driving the bevel gear 2 24 meshing therewith to start rotating, thereby driving the rotating shaft 25 to start rotating, and then The rear rotating shaft 25 drives the rotating disk 26 to start rotating, and then drives the No. 1 connecting rod 21 to start moving along the moving hole 22, further driving the clamping plate 18 and the rubber pad 19 to start moving away from the clamping of the lower die base 3, thereby replacing the lower die base 3, and then manually loosening the insert rod 16 so that the insert rod 16 is reinserted into the ring 13 to fix the rotating shaft 11, and then manually twisting the bolt 10 so that the bolt 10 is disengaged from the sliding plate 6 and the fixing block 9, and then the upper die base 4 is replaced. After the replacement is completed, the above operation is repeated in reverse to fix the new lower die base 3 and the upper die base 4.

[0028] The above is a detailed introduction to a crankshaft forging die provided by the utility model. This article uses specific embodiments to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A crankshaft forging die, characterized in that: include: A base (1), wherein a plurality of support columns (8) are fixedly mounted on the top of the base (1), a same placement plate (7) is fixedly mounted on the top of the plurality of support columns (8), a lower die seat (3) is arranged on the top of the placement plate (7), an upper die seat (4) is arranged directly above the lower die seat (3), a groove is provided inside the base (1), a rotating shaft (11) is rotatably mounted on the side wall of the groove, a bevel gear 1 (23) is fixedly mounted on the outside of the rotating shaft (11), a bevel gear 2 (24) is meshed with the outside of the bevel gear 1 (23), and the inside of the bevel gear 2 (24) is A rotating shaft (25) is fixedly installed, a rotating disk (26) is fixedly installed on the top of the rotating shaft (25), a plurality of No. 2 connecting rods (27) are hinged on the top of the rotating disk (26), a No. 1 connecting rod (21) is fixedly installed on the top of the plurality of No. 2 connecting rods (27), a supporting block (20) is fixedly installed on the side where the plurality of No. 1 connecting rods (21) are close to each other, a clamping plate (18) is fixedly installed on the inner side of the supporting block (20), a rubber pad (19) is fixedly installed on the inner side of the clamping plate (18), and the rubber pad (19) is movably abutted against the four sides of the lower mold base (3).

2. A crankshaft forging die according to claim 1, characterized in that: A U-shaped frame (2) is fixedly installed on the top of the base (1), a hydraulic cylinder (5) is fixedly installed on the bottom of the U-shaped frame (2), the output end of the hydraulic cylinder (5) is fixedly connected to a sliding plate (6), a plurality of threaded holes are provided at the bottom of the sliding plate (6), the bottom of the sliding plate (6) is movably abutted against the top of the upper die seat (4), and fixed blocks (9) are fixedly installed on both sides of the upper die seat (4), the internal thread of the fixed block (9) is connected to a bolt (10), and the outer side of the bolt (10) is threadedly connected to the corresponding threaded hole.

3. A crankshaft forging die according to claim 1, characterized in that: A rotating wheel (12) is fixedly mounted on the right side of the rotating shaft (11); a circular ring (13) is fixedly mounted on the outer side of the rotating shaft (11); a plurality of circular holes (14) are provided on the outer side of the circular ring (13); a rectangular block (15) is fixedly mounted on the right side of the base (1); a plug rod (16) is slidably inserted into the interior of the rectangular block (15); a return spring (17) is fixedly mounted on the outer side of the plug rod (16); one side of the return spring (17) is fixedly mounted on the bottom of the rectangular block (15); and the outer side of the plug rod (16) is movably inserted into the corresponding circular hole (14).

4. A crankshaft forging die according to claim 1, characterized in that: The outer side of the rotating shaft (25) is rotatably connected to the inside of the base (1), the outer side of the placement plate (7) is provided with a plurality of movable holes (22), and the outer side of the No. 1 connecting rod (21) is slidably connected to the corresponding movable holes (22).

5. A crankshaft forging die according to claim 2, characterized in that: A sliding groove is provided inside the U-shaped frame (2), and the outer side of the sliding plate (6) is slidably connected in the sliding groove.

6. The crankshaft forging die according to claim 1, characterized in that: Support legs (28) are fixedly mounted on the bottom of the base (1) at the front, back, left and right sides.

Images