Forming die for slender deep-hole forge piece

Abstract

The utility model discloses a long and thin deep hole forge piece forming die, and belongs to the field of long and thin part forging. The long and thin deep hole forge piece forming die comprises a lower die plate, a hole extruding female die is placed on the lower die plate, a punching female die is further arranged above the lower die plate, a material pulling plate parallel to the lower die plate is arranged above the lower die plate, the lower die plate is connected with the material pulling plate through a material pulling plate supporting column, male die limiting through holes are formed in the two sides of the center line of the material pulling plate, and the male die limiting through holes are connected with the lower die plate. A hole extruding male die and a hole punching male die are arranged in the male die limiting through holes respectively, the hole extruding male die corresponds to the hole extruding female die in position, and the hole punching male die corresponds to the hole punching female die in position. Compared with a slender structure of a traditional upper die core, the hole extrusion male die is larger in stress area and not prone to bending, so that the manufacturing cost is reduced, demolding is easier due to the unique design of the hole extrusion male die, meanwhile, the production efficiency is improved, the hole extrusion male die can directly extrude out an inner hole, and the material cost of each forge piece is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a forging die forming technical field, concretely relates to an elongated deep hole forging forming die. BACKGROUND

[0002] The lug type part in the vehicle gearbox has the characteristics of the elongated deep hole structure, and the lug type forging usually has a center part and an outward protruding edge, which is similar to a flange plate and has a relatively regular overall structure. The lug forging is usually formed by closed hot die forging process, the center of which is composed of an elongated deep hole, and the blind hole is usually formed as a blind hole in the forging process, and the blind hole needs to be punched through in the punching process. For example, the existing public technology JP2024155409A is a punching die, which has high efficiency in manufacturing plate parts, but there is still room for improvement in the punching process of the lug type part. SUMMARY

[0003] The core of the utility model is to provide an elongated deep hole forging forming die, which has a larger stress area of the extrusion punch in the die, is not easy to bend, and reduces the manufacturing cost. The unique design makes the part easier to demold, and the inner hole can be directly extruded, which not only saves the material cost of each forging, but also improves the production efficiency of the die.

[0004] An elongated deep hole forging forming die, comprising a lower die plate, an extrusion concave die placed on the lower die plate, a punching concave die arranged above the lower die plate, a material pulling plate arranged above the lower die plate and parallel to the lower die plate, the lower die plate being connected with the material pulling plate through a material pulling plate support column, the material pulling plate having a convex die limiting through hole on both sides of the center line, the extrusion convex die and the punching convex die being arranged in the convex die limiting through hole respectively, the position of the extrusion convex die corresponding to the position of the extrusion concave die, and the position of the punching convex die corresponding to the position of the punching concave die.

[0005] The material pulling plate support column is in a cylindrical structure, used for fixing the parallel position relationship between the lower die plate and the material pulling plate, the convex die limiting through holes on both sides of the material pulling plate limit the positions of the column bodies of the extrusion convex die and the punching convex die respectively, the extrusion concave die is in a cylindrical structure, the center of which is used for placing the forging material, and the extrusion concave die cooperates with the extrusion convex die to perform the extrusion step, the structure below the extrusion concave die can realize the purpose of centering positioning with the counterbore of the lower die plate, and the stability of the position of the forging in the extrusion process is ensured. The center of the punching concave die is used for placing the forging, and the punching concave die cooperates with the punching convex die to perform the punching step of the forging, and the cylindrical structure below the punching concave die can realize the purpose of centering positioning with the counterbore of the lower die plate, and the stability of the position of the forging in the punching process is ensured.

[0006] The utility model discloses extruding hole concave die side places lower mould pressing ring, and lower mould pressing ring is disc -shaped structure, is equipped with the pressing ring positioning screw hole of being located lower mould pressing ring below on lower mould plate, and lower mould pressing ring is equipped with the first counterbore of corresponding with the position of pressing ring positioning screw hole, and the fixed screw of pressing ring is placed in first counterbore and pressing ring positioning screw hole.

[0007] The utility model discloses the purpose of first counterbore and pressing ring positioning screw hole is to cooperate with screw, and the relative position of lower mould pressing ring and lower mould plate is stabilized by the connection of lower mould pressing ring and lower mould plate, thereby guarantee the position stability of extruding hole concave die when extruding.

[0008] The utility model discloses the center of lower mould pressing ring is equipped with first ring groove and second ring groove, and the surface of lower mould plate is equipped with second counterbore and sixth counterbore, and extruding hole concave die is placed in second counterbore, and the second counterbore of lower mould plate is below first ring groove, and punch concave die is placed in sixth counterbore, and the sixth counterbore of lower mould plate is below second ring groove.

[0009] The utility model discloses the middle of pulling material board support column has third through -hole, and the screw rod is in third through -hole, and the one end of screw rod is placed in pulling material board outer end and is equipped with the nut. Pulling material board is the cuboid structure, and each has a support column positioning through -hole in two sides, and there is screw rod in support column positioning through -hole. The mutual cooperation of screw rod nut is used for fixing the vertical positional relationship of pulling material board and pulling material board support column, and the vertical positional relationship of screw rod and lower screw thread cooperation is used for fixing pulling material board support column and lower mould plate, and finally guarantee the parallel positional relationship of pulling material board and lower mould plate.

[0010] The utility model discloses extruding hole convex die is cylindrical structure, and the upper end is connected with upper mould plate, and the end of extruding hole convex die has cylindrical boss, and upper mould plate is the cuboid structure, and has upper mould plate inlay with the cooperation of cylindrical boss outer circle, and extruding hole convex die is equipped with upper mould fixed plate, and upper mould fixed plate has the center third through -hole with the cooperation of extruding hole convex die. The boss of punch convex die end has, and is same with cylindrical boss structure. The inlay structure of boss outer circle cooperation is same with upper mould plate inlay structure, and upper mould fixed plate is also equipped with upper mould fixed plate with punch convex die cooperation, and the center through -hole structure of punch convex die cooperation is same with third through -hole.

[0011] The outer circle of the cylindrical boss of this utility model cooperates with the upper template insert and the upper template to ensure that the extrusion punch and the punching punch are positioned within the upper template insert and the upper mold fixing plate, thus ensuring the stability of the extrusion punch and the punching punch during operation.

[0012] The present invention relates to an upper mold fixing plate, one side of which abuts against the side of a supporting upper template. The upper mold fixing plate is provided with a third countersunk hole, and the upper template has a slotted positioning threaded hole corresponding to the position of the third countersunk hole. Fixing screws are placed in the slotted positioning threaded hole and the third countersunk hole. The fixing screws connect the upper mold fixing plate, the upper template, and the upper template slot, thereby fixing the relative positions of the upper mold fixing plate, the upper template, and the upper template slot.

[0013] This utility model features a fourth countersunk hole on the edge of the upper template. A through hole is formed on the bottom surface of the fourth countersunk hole, and an upper template insert is housed within the left through hole. A fifth countersunk hole is located at the bottom center of the upper template insert. The fourth countersunk hole and the through hole at its bottom ensure that the upper template insert is stably embedded in the upper template. The fifth countersunk hole cooperates with a cylindrical boss to fix the extrusion punch, ensuring its stability during extrusion. An insert is housed within the right through hole. The countersunk hole structure at the bottom center of the insert is identical to that of the upper template insert and the fifth countersunk hole, ultimately serving to fix the punch and ensure its stability during punching.

[0014] This utility model has a first cavity inside the extrusion die, which extends through one end of the extrusion die. A second cavity inside the punching die extends through both ends of the extrusion die. The first cavity ensures the formation of the hole position in the extruded forging, and the second cavity ensures that excess forging material can be discharged from the bottom of the punching die during punching.

[0015] The advantages of this invention are as follows: The extrusion punch design of this invention results in a larger stress area, making it less prone to bending, thereby significantly reducing manufacturing costs. Compared to the traditional upper die core structure, the unique design of the extrusion punch makes demolding easier, greatly improving production efficiency. Because the traditional upper die core is prone to bending and delays production, it is sometimes even eliminated, and a blind hole is forged directly, which greatly increases material costs. If the inner hole is extruded using the extrusion punch, the material cost of each forging will be greatly reduced. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1The utility model provides a kind of slender deep hole forging forming die assembly drawing lower end digital marking diagram;

[0018] Figure 2 The utility model provides a kind of slender deep hole forging forming die support column schematic diagram;

[0019] Figure 3 The utility model provides a kind of slender deep hole forging forming die assembly drawing middle end digital marking diagram;

[0020] Figure 4 The utility model provides a kind of slender deep hole forging forming die top schematic diagram.

[0021] Marking: 1-lower die plate;2-lower die pressing ring;3-drawing plate support column;4-extrusion hole female die;5-screw;6-nut;7-drawing plate;8-extrusion hole male die;9-upper die fixed screw;10-upper die plate;11-pressing ring positioning screw hole;12-upper die fixed plate;13-pressing ring fixed screw;102-fourth counterbore;110-upper die plate insert;111-insert positioning screw hole;112-fifth counterbore;121-third counterbore;122-third through hole;21-first counterbore;221-first annular groove;222-second annular groove;223-second counterbore;224-sixth counterbore;31-third through hole;41-first cavity;42-punching female die;43-second cavity;71-support column positioning through hole;72-male die limiting through hole;81-cylindrical boss;82-punching male die. DETAILED DESCRIPTION

[0022] In order to make the purpose and the advantage of the utility model more clearly and clearly, the following specific description is made to the application combined with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the application, and does not strictly limit the protection scope of the application.

[0023] Example 1:

[0024] Referring to the drawings Figure 1 The core of the utility model is to provide a kind of slender deep hole forging forming die, including lower die plate 1, extrusion hole female die 4 is placed on lower die plate 1, punching female die 42 is also provided on the upper side of lower die plate 1, drawing plate 7 is provided on the upper side of lower die plate 1 and is parallel to it, lower die plate 1 is connected with drawing plate 7 by drawing plate support column 3, male die limiting through hole 72 is provided on the center line of both sides of drawing plate 7, cylindrical extrusion hole male die 8 and punching male die 82 are respectively arranged in male die limiting through hole 72, extrusion hole male die 8 position corresponds with extrusion hole female die 4, and punching male die 82 position corresponds with punching female die 42.

[0025] Referring to the drawings Figure 1 , the drawings Figure 2As shown, the material drawing plate support column 3 is used to fix the parallel position relationship of the lower die plate 1 and the material drawing plate 7, the convex die limiting through hole 72 on both sides of the material drawing plate 7 limits the column body position of the extrusion hole convex die 8 and the punching convex die 82 respectively, the center of the extrusion hole concave die 4 is used to place the forging material, cooperates with the extrusion hole convex die 8 to carry out the extrusion hole step, the structure below the extrusion hole concave die 4 can realize the centering positioning purpose with the counterbore of the lower die plate 1, and the stability of the position of the forging in the extrusion hole process is guaranteed.

[0026] Referring to the drawings Figure 1 As shown, the extrusion hole concave die 4 side places the lower die pressing ring 2, the lower die pressing ring 2 is a disc-shaped structure, the lower die plate 1 is provided with a pressing ring positioning screw hole 11 located below the lower die pressing ring 2, the lower die pressing ring 2 is provided with a first counterbore 21 corresponding in position to the pressing ring positioning screw hole 11, and the first counterbore 21 and the pressing ring positioning screw hole 11 are placed with a pressing ring fixing screw 13. The pressing ring on the side of the punching concave die 42 is the same as the lower die pressing ring 2, the counterbore is provided with the same structure as the first counterbore 21, the screw hole below the counterbore is provided with the same structure as the pressing ring positioning screw hole 11, and the screw placed inside is the same as the pressing ring fixing screw 13.

[0027] Referring to the drawings Figure 1 As shown, the purpose of the first counterbore 21 and the pressing ring positioning screw hole 11 is to cooperate with the screw 13, the screw 13 connects the lower die pressing ring 2 and the lower die plate 1, and the relative position of the lower die pressing ring 2 and the lower die plate 1 is stabilized, so that the position stability of the extrusion hole concave die 4 in the extrusion hole is guaranteed. The connection mode of the pressing ring, the screw and the counterbore around the punching concave die 42 is the same as the connection mode of the lower die pressing ring 2 around the extrusion hole convex die 4, and the position stability of the punching concave die 42 in the punching is also guaranteed.

[0028] Referring to the drawings Figure 1 As shown, the lower die pressing ring 2 is provided with a first ring groove 221 and a second ring groove 222 in the center, the surface of the lower die plate 1 is provided with a second counterbore 223 and a sixth counterbore 224, the extrusion hole concave die 4 is placed in the second counterbore 223 of the lower die plate 1 below the first ring groove 221, the punching concave die 42 is placed in the sixth counterbore 224 of the lower die plate 1 below the second ring groove 222. The extrusion hole concave die 4 can be fixed by being placed into the first ring groove 221 and the second counterbore 223, so that the stability of the extrusion hole concave die 4 in the extrusion hole step is guaranteed, and the punching concave die 42 can be fixed by being inserted into the second ring groove 222 and the sixth counterbore 224, so that the stability of the punching concave die 42 in the punching step is guaranteed.

[0029] Referring to the drawings Figure 2 , the drawings Figure 3As shown, the middle of the material pulling plate support column 3 has a third through hole 31, and the third through hole 31 is provided with a screw rod 5, and one end of the screw rod 5 is arranged at the outer end of the material pulling plate 7 and is provided with a nut 6. The material pulling plate 7 has a support column positioning through hole 71 on each side, and the support column positioning through hole 71 is provided with a screw rod 5. The screw rod 71 and the nut 6 are matched to fix the vertical position relationship of the material pulling plate 7 and the material pulling plate support column 3, and the screw rod 71 and the lower threaded hole are matched to fix the vertical position relationship of the material pulling plate support column 3 and the lower mold plate 1, and finally ensure the parallel position relationship of the material pulling plate 7 and the lower mold plate 1.

[0030] Example 2:

[0031] Referring to the accompanying drawings Figure 1 , the accompanying drawings Figure 4 As shown, the upper end of the hole extruding punch 8 is connected with the upper mold plate 10, the hole extruding punch 8 has a cylindrical boss 81 at the end, the upper mold plate 10 has a disc-shaped upper mold plate insert 110 matched with the outer circle of the cylindrical boss 81, the hole extruding punch 8 is provided with a disc-shaped upper mold fixed plate 12 outside, and the upper mold fixed plate 12 has a central third through hole 122 matched with the hole extruding punch 8. The end of the hole punching punch 82 has a boss, which has the same structure as the cylindrical boss 81. The boss outer circle matched insert has the same structure as the upper mold plate insert structure 110, and the hole punching punch 8 is also provided with an upper mold fixed plate 12 outside, and the central through hole structure matched with the hole punching punch 82 of the upper mold fixed plate 12 is the same as the third through hole 122.

[0032] Referring to the accompanying drawings Figure 1 , the accompanying drawings Figure 3 , the accompanying drawings Figure 4 As shown, the outer circle of the cylindrical boss 81 is matched with the upper mold plate insert 110 and the upper mold fixed plate 12, which ensures the positioning of the hole extruding punch 8 and the hole punching punch 82 in the upper mold plate insert 110 and the upper mold fixed plate 12, and ensures the stability of the hole extruding punch 8 and the hole punching punch 82 during work.

[0033] Referring to the accompanying drawings Figure 4 As shown, one side of the upper mold fixed plate 12 abuts against the side of the upper mold plate 10, the upper mold fixed plate 12 is provided with a third counterbore 121, the upper mold plate 10 has an insert positioning threaded hole 111 corresponding to the position of the third counterbore 121, and a fixing screw 9 is arranged in the insert positioning threaded hole 111 and the third counterbore 121. The fixing screw 9 connects the upper mold fixed plate 12, the upper mold plate 10 and the upper mold plate insert 110, thereby fixing the relative position of the upper mold fixed plate 12, the upper mold plate 10 and the upper mold plate insert 110.

[0034] Referring to the accompanying drawings Figure 1 , the accompanying drawings Figure 4As shown, the upper die plate 10 edge is provided with a fourth counterbore 102, a through hole is opened at the bottom surface of the fourth counterbore 102, and the left through hole is provided with an upper die plate insert 110. The center bottom of the upper die plate insert 110 is provided with a fifth counterbore 112. The fourth counterbore 102 and the bottom through hole thereof can ensure that the upper die insert 110 is stably embedded in the upper die plate 10. The fifth counterbore 112 cooperates with the cylindrical boss 81, thereby fixing the extrusion punch 8 and ensuring the stability of the extrusion punch 8 during extrusion.

[0035] Referring to the drawings Figure 1 As shown, the extrusion punch 4 is provided with a first cavity 41, and the first cavity 41 penetrates one end of the extrusion punch 4. The extrusion punch 42 is provided with a second cavity 43, and the second cavity 43 penetrates both ends of the extrusion punch 4. The first cavity 41 ensures the formation of the hole position of the extrusion forging part, and the second cavity 43 ensures that the excess forging material can be discharged from the bottom of the punching die 42 when the punching punch 82 punches.

[0036] The above-described embodiments and / or implementations are merely used to illustrate the preferred embodiments and / or implementations of the present application, and are not intended to limit the implementation of the present application in any form. Any person skilled in the art can make some changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the present application, and such changes or modifications should be considered as substantially the same technical or embodiments of the present application.

[0037] The principles and implementations of the present application are described by using specific examples in this paper. The above description of the embodiments is only used to help understand the method and its core idea of the present application. The above description is only the preferred implementation of the present application. It should be pointed out that due to the limitation of language expression, there are infinite specific structures. For ordinary skilled persons in the art, some improvements, refinements or changes can be made without departing from the principles of the present application. The above technical features can also be combined in an appropriate manner. These improvements, refinements, changes or combinations, or the direct application of the present application to other occasions without improvement, should be considered as the protection scope of the present application.

Claims

1. An elongated deep hole forging forming die comprising a lower die plate (1) on which a piercer die (4) is placed, characterized in that: The lower die plate (1) is further provided with a punching female die (42) above it, and a material pulling plate (7) is arranged parallel to the lower die plate (1) above it, the lower die plate (1) is connected with the material pulling plate (7) through a material pulling plate support column (3), the material pulling plate (7) is provided with a male die limiting through hole (72) on both sides of its center line, and the male die limiting through hole (72) is respectively provided with an extrusion hole male die (8) and a punching male die (82), the position of the extrusion hole male die (8) corresponds to that of the extrusion hole female die (4), and the position of the punching male die (82) corresponds to that of the punching female die (42).

2. An elongated deep hole forging forming die according to claim 1, characterized in that: The extrusion hole female die (4) is placed with a lower die pressing ring (2) on its side, the lower die plate (1) is provided with a pressing ring positioning threaded hole (11) below the lower die pressing ring (2), the lower die pressing ring (2) is provided with a first counterbore (21) corresponding to the position of the pressing ring positioning threaded hole (11), and a pressing ring fixing screw (13) is arranged in the first counterbore (21) and the pressing ring positioning threaded hole (11).

3. An elongated deep hole forging forming die according to claim 2, wherein: The lower die pressing ring (2) is provided with a first ring groove (221) in its center, the surface of the lower die plate (1) is provided with a second counterbore (223), the extrusion hole female die (4) is arranged in the second counterbore (223), and the second counterbore (223) is below the first ring groove (221) of the lower die plate (1).

4. The elongated deep hole forging forming die of claim 1, wherein: The material pulling plate support column (3) is provided with a third through hole (31) in its middle, the third through hole (31) is provided with a screw rod (5), and one end of the screw rod (5) is arranged outside the outer end of the material pulling plate (7) and is provided with a nut (6).

5. The elongated deep hole forging forming die of claim 1, wherein: The material pulling plate (7) is provided with a support column positioning through hole (71) on each side thereof, and the support column positioning through hole (71) is provided with a screw rod (5).

6. The elongated deep hole forging forming die of claim 1, wherein: The extrusion hole male die (8) is connected with an upper die plate (10) at its upper end, the extrusion hole male die (8) is provided with a cylindrical boss (81) at its end, the upper die plate (10) is provided with an upper die plate insert block (110) matched with the outer circle of the cylindrical boss (81), the extrusion hole male die (8) is provided with an upper die fixing plate (12) outside it, and the upper die fixing plate (12) is provided with a central third through hole (122) matched with the extrusion hole male die (8).

7. An elongated deep hole forging forming die according to claim 6, wherein: One side surface of the upper die fixing plate (12) abuts against the side surface of the upper die plate (10), the upper die fixing plate (12) is provided with a third counterbore (121), the upper die plate (10) is provided with an insert block positioning threaded hole (111) corresponding to the position of the third counterbore (121), and a fixing screw (9) is arranged in the third counterbore (121) and the insert block positioning threaded hole (111).

8. An elongated deep hole forging forming die according to claim 7, characterized in that: The upper die plate (10) is provided with a fourth counterbore (102) at its edge, a through hole is formed in the bottom surface of the fourth counterbore (102), the upper die plate insert block (110) is arranged in the through hole, and the upper die plate insert block (110) is provided with a fifth counterbore (112) in its central bottom.

9. The elongated deep hole forging forming die of claim 1, wherein: The extrusion hole female die (4) is provided with a first cavity (41) inside it, the first cavity (41) penetrates one end of the extrusion hole female die (4), the punching female die (42) is provided with a second cavity (43) inside it, and the second cavity (43) penetrates both ends of the extrusion hole female die (4).

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