CN113894203B - Punching tool and punching method - Google Patents
Punching tool and punching method Download PDFInfo
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- CN113894203B CN113894203B CN202110986912.0A CN202110986912A CN113894203B CN 113894203 B CN113894203 B CN 113894203B CN 202110986912 A CN202110986912 A CN 202110986912A CN 113894203 B CN113894203 B CN 113894203B
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- guide
- punching
- male die
- inclined plane
- punch
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- 238000004080 punching Methods 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000000758 substrate Substances 0.000 claims description 21
- 238000003825 pressing Methods 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 10
- 210000001503 joint Anatomy 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 11
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/32—Perforating, i.e. punching holes in other articles of special shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/001—Shaping combined with punching, e.g. stamping and perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
The invention discloses a punching tool and a punching method, wherein the punching tool comprises an upper base body, a base, a first guide structure, a male die, a female die sleeve and a punch head arranged on the upper base body, wherein: the base is provided with a guide inclined plane, and the male die is in sliding fit with the guide inclined plane; the female die sleeve is arranged on the male die and matched with the punch; the first guide structure comprises a matched guide post and guide sleeve, one of the guide post and the guide sleeve is arranged on the upper base body, the other one of the guide post and the guide sleeve is arranged on the male die, and after the upper base body moves for a set distance along the stamping direction, the male die moves to the guide post and the guide sleeve along the guide inclined plane in a sleeved and butted mode. The invention can avoid interference with the picking and placing of the parts and realize punching in the punching process. Meanwhile, the guide inclined plane and the first guide structure are additionally arranged, so that the operation precision of the male die is ensured, positioning deviation is avoided, and the precision and stability of punching on the movable part can be ensured.
Description
Technical Field
The invention relates to the technical field of punching, in particular to a punching tool and a punching method.
Background
In the stamping process, a negative angle punching condition exists, and in order to ensure that a part taking and placing structure and a lower die punching structure do not interfere during stamping production, the hole can only be punched out in advance before the shape of the side wall of the part is not out in the traditional stamping process scheme, and then the negative angle side wall shaping is performed. But when adopting the scheme of reshaping after punching, the hole is nearer to the reshaping area, and the sheet deformation is big during the reshaping, can lead to producing the deformation at the hole that has punched in the in-process of slide wedge plastic, and the position and the shape of hole all can not guarantee, influence the installation accuracy.
Therefore, in order to ensure the punching precision, the punching is performed after shaping, but because the side wall surface of the part near the punching is a negative angle, the punch head and the female die sleeve can interfere, and the existing punching die and the existing technological method have very low guiding precision, are generally used for the contents of flanging and shaping procedures, and cannot meet the requirement of punching.
Disclosure of Invention
In order to solve the technical problems, the invention provides a punching tool and a punching method, which avoid punching interference and ensure the operation precision of a male die and the punching precision and stability.
The technical scheme adopted for achieving the purpose of the invention is that the punching tool comprises an upper base body, a base, a first guide structure, a male die, a female die sleeve and a punch head arranged on the upper base body, wherein: the base is provided with a guide inclined plane, and the male die is in sliding fit with the guide inclined plane; the female die sleeve is arranged on the male die and matched with the punch; the first guide structure comprises a guide post and a guide sleeve which are matched, one of the guide post and the guide sleeve is arranged on the upper base body, the other is arranged on the male die, and after the upper base body moves for a set distance along the stamping direction, the male die moves to the guide post and the guide sleeve in a sleeved butt joint along the guide inclined plane.
Further, the punch is provided with a mounting inclined surface matched with the guiding inclined surface so that the movement direction of the punch has a projection component parallel to the punching direction.
Further, two guide plates which are respectively connected with the base and the male die are arranged between the base and the male die, and two opposite surfaces of the two guide plates, which are contacted with each other, respectively form the installation inclined surface and the guide inclined surface; and the guide inclined plane is provided with a matched second guide structure.
Further, the second guiding structure comprises a boss and a caulking groove; the cross sections of the boss and the caulking groove are V-shaped.
Further, the punching tool further comprises a slotting tool arranged on the upper base body, the slotting tool is provided with a first driving inclined plane, and a second driving inclined plane matched with the first driving inclined plane is arranged on the male die.
Further, the punching tool further comprises a cover plate for placing a part to be punched and a positive pressure material plate for fixing the part to be punched; the cover plate is arranged on the base, and the positive pressure material plate is arranged on the upper base in a sliding manner.
Further, the axial directions of the guide sleeve and the guide post are arranged parallel to the punching direction.
Based on the same inventive concept, the invention also provides a punching method, which is implemented based on the punching tool and comprises the following steps:
placing the part to be punched on the base;
controlling the upper base body to move a first set distance along the stamping direction so that the male die moves to a first set position along the guide inclined plane, and the guide post is in butt joint with the guide sleeve;
controlling the upper matrix to move a second set distance along the stamping direction so that the punch reaches a pre-alignment position corresponding to the die sleeve;
and controlling the punch to punch the part to be punched.
Further, before the control punch punches the part to be punched, the punching and punching method further includes: and controlling the wedge pressing plate arranged on the upper base body to move along the punching direction and press the part to be punched.
Further, before the upper substrate is controlled to continue moving to a second set distance along the punching direction, the punching method further includes: and controlling a positive pressure material plate arranged on the upper base body to press the part to be punched.
According to the technical scheme, the punching tool provided by the invention comprises an upper substrate, a base, a first guide structure, a male die, a female die sleeve and a punch head arranged on the upper substrate, wherein: the base is provided with a guide inclined plane, the male die is in sliding fit with the guide inclined plane, and due to the existence of the guide inclined plane, the male die is acted by gravity component force of the male die when moving towards a set direction, so that the stability and accuracy of the male die movement are ensured. The die sleeve is arranged on the male die, the die sleeve is matched with the punch, the die sleeve is movably arranged on the base along with the male die, and the workpiece taking and placing of the interference part can be avoided through the movement of the male die, so that punching in the punching process can be realized. The first guide structure comprises a matched guide post and guide sleeve, one of the guide post and the guide sleeve is arranged on the upper base body, the other one of the guide post and the guide sleeve is arranged on the male die, after the upper base body moves a set distance along the punching direction, the male die moves to the sleeving butt joint of the guide post and the guide sleeve along the guide inclined plane, and then the upper base body and the male die continue to move relatively under the action of the first guide structure, so that the position of the male die is accurately controlled, and the accurate positioning of the male die before punching is ensured.
Compared with the horizontal guiding in the prior art, the invention is additionally provided with the guiding inclined plane and the first guiding structure, and because the precision of the guiding inclined plane and the precision of the first guiding structure are higher, the operation precision of the male die is ensured based on the added 2 guiding measures, the positioning deviation is avoided, and the punching precision and stability on the movable part can be ensured.
Based on the same inventive concept, the punching method provided by the invention is implemented based on the punching tool and comprises the following steps:
the part to be punched is placed on the base, and the male die is movably arranged, so that the male die can be operated when the part is taken out and placed, and the part is prevented from being interfered by the part taking out and placed.
Controlling the upper matrix to move a first set distance along the stamping direction so that the male die moves to a first set position along the guide inclined plane, and butting the guide post with the guide sleeve; compared with horizontal guiding in the prior art, the invention ensures the operation precision of the male die through the inclined plane, and avoids the precision error of punching caused by positioning deviation.
The upper base body is controlled to continuously move a second set distance along the punching direction, so that the punch head reaches a pre-alignment position corresponding to the female die sleeve, the punch head is controlled to move along the punching direction to punch, during the operation, a first guide structure formed by the guide post and the guide sleeve accurately positions the position of the male die on the base, the accurate alignment of the punch head and the female die sleeve is ensured, the final positioning of the male die is doubly ensured through the first guide structure and the guide inclined plane, and the accuracy and the stability of punching on the movable part can be ensured based on the added 2 guide measures.
Drawings
Fig. 1 is a schematic diagram of a first step of a punching tool provided in embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of a second step of the punching tool of FIG. 1;
FIG. 3 is a schematic diagram of a third process step of the punch tooling of FIG. 1;
fig. 4 is a schematic diagram of a fourth step of the punching tool of fig. 1.
Reference numerals: 1-a positive pressure material plate; 2-a guide post; 3-slotting tool; 4-guiding sleeve; 5-male die; 6-upper V-shaped guide plate; 7-lower V-shaped guide plate; 8-cover plate; 9-die sleeve; 10-punching heads; 11-a driving seat; 12-wedge pressing plates; 13-wedge slide block; 14-an upper substrate; 15-a base.
Detailed Description
In order to make the technical solution more clearly understood by those skilled in the art, the following detailed description is made with reference to the accompanying drawings.
In order to solve the technical problems of complex negative angle punching process and low precision in the prior art, the invention provides a punching tool and a punching method for realizing negative angle punching in the punching process, and the punching precision is high. The following describes the invention in detail by way of 2 examples:
example 1
As shown in fig. 1 to 4, the present embodiment provides a punching tool, which includes an upper substrate 14, a base 15, a first guiding structure, a punch 5, a die sleeve 9, and a punch 10 disposed on the upper substrate 14, wherein: the base 15 is provided with a guide inclined plane, the male die 5 is in sliding fit with the guide inclined plane, and due to the existence of the guide inclined plane, the male die 5 is acted by gravity component force of the male die 5 when moving towards a set direction, so that the stability and accuracy of the movement of the male die 5 are ensured. The die sleeve 9 is arranged on the male die 5, the die sleeve 9 is matched with the punch 10, the die sleeve 9 is movably arranged on the base 15 along with the male die 5, the workpiece taking and placing of the interference parts can be avoided through the movement of the male die 5, and punching in the punching process can be realized. The first guide structure comprises a guide post 2 and a guide sleeve 4 which are matched, one of the guide post 2 and the guide sleeve 4 is arranged on an upper base body 14, the other is arranged on a male die 5, after the upper base body 14 moves along the punching direction for a set distance, the male die 5 moves along a guide inclined plane until the guide post 2 and the guide sleeve 4 are sleeved and butted, then the upper base body 14 and the male die 5 continue to move relatively under the action of the first guide structure, the position of the male die 5 is accurately controlled, and the precise positioning of the male die 5 before punching is ensured.
Compared with the horizontal guiding in the prior art, the invention is additionally provided with the guiding inclined plane and the first guiding structure, and the accuracy of the guiding inclined plane and the first guiding structure is very high, so that the operation accuracy of the male die 5 is ensured after 2 guiding measures are skillfully added, the positioning deviation is avoided, and the punching accuracy and stability on the movable part can be ensured.
In order to facilitate the sliding of the punch 5 on the guide inclined surface, in this embodiment, the punch 5 is provided with a mounting inclined surface matching with the guide inclined surface so that the moving direction of the punch 5 has a projection component parallel to the punching direction, so that the punch 5 can move along the guide inclined surface under the driving of the upper base 14.
The present invention is not particularly limited to the installation inclined plane and the guide inclined plane, and may be formed by one surface of the male die 5 and the base 15, or may be formed by adding separate inclined planes to the male die 5 and the base 15. In order to reduce the abrasion of the male die 5 and the base 15 caused by the relative movement, in this embodiment, two guide plates respectively connected with the base 15 and the male die 5 are arranged between the base 15 and the male die 5, and two opposite surfaces of the two guide plates, which are contacted with each other, respectively form an installation inclined surface and a guide inclined surface; the guide inclined plane is provided with a matched second guide structure. The male die 5 is arranged on the guide inclined plane through the installation inclined plane, and the second guide structure is arranged on the guide inclined plane, so that the male die 5 moves along the guide inclined plane, the deviation of a route is avoided, the upper surface of the installed male die 5 is parallel to a horizontal plane, the guide post 2 or the guide sleeve 4 is simple to set, and the technical problem that the guide post 2 and the guide sleeve 4 are inaccurate in alignment due to angle deviation is avoided.
The invention does not limit the structural shape of the male die 5, for example, when the guide plate for blocking the installation inclined plane is a triangle, the male die 5 can be in a cube shape without specially processing the inclined plane. In this embodiment, the guide plate forming the installation inclined plane is a flat plate, and the male die 5 is a cube with a unfilled corner so as to be connected with the installation inclined plane, and meanwhile, the guide sleeve 4 or the male die 5 is convenient to set.
In order to limit the moving route of the male die 5, in this embodiment, the second guiding structure includes a boss and a caulking groove, and the shape structure of the boss and the caulking groove is not limited in the present invention, so long as the guiding effect is ensured after the embedding, for example, a dovetail groove structure may be adopted. In order to further ensure the positioning and guiding precision, in this embodiment, the cross sections of the boss and the caulking groove are V-shaped to form an upper V-shaped guide plate 6 provided on the male die 5 and a lower V-shaped guide plate 7 provided on the base 15.
In order to convert the movement of the upper substrate 14 along the stamping direction into the movement of the male die 5 along the guiding inclined plane, in this embodiment, the punching tool further includes a cutter 3 disposed on the upper substrate 14 and used for driving the male die 5, where the cutter 3 has a first driving inclined plane, and the male die 5 is provided with a second driving inclined plane for matching with the first driving inclined plane. The inclination directions of the first driving inclined plane, the second driving inclined plane and the guiding inclined plane are not necessarily parallel, that is, the inclination directions are not necessarily the same, and the inclination directions are only required to be ensured to be the same.
In order to realize the limit of the male die 5 in the return state and avoid the male die 5 from separating from the guide inclined surface of the base 15 under the action of gravity, limit parts are arranged at the limit positions of the two ends of the guide inclined surface along the movement direction of the male die 5 in the embodiment.
Before the positive pressure flitch 1 compresses tightly the part that waits to punch a hole, in order to place the part, to this embodiment, still including being used for placing the apron 8 of waiting to punch a hole the part, apron 8 is fixed to be set up on base 15, and is close to the upper surface setting of terrace die 5, and when each die sleeve 9 of terrace die 5 moved along the direction inclined plane, also laminating apron 8's bottom surface motion.
In order to fix a position of a part to be punched and avoid punching deviation caused by vibration and other factors during punching, in this embodiment, the punching tool further includes a positive pressure plate 1 for fixing the punched part, where the positive pressure plate 1 is movably disposed on the upper substrate 14, the specific setting of the positive pressure plate 1 is not limited, so long as the fact that the part is pressed before punching is satisfied, in this embodiment, in the process from the state of the male die 5 being in the return state to the completion of alignment of the guiding docking structure, the positive pressure plate 1 descends along with the upper substrate 14, and when the guiding docking structure completes docking, the positive pressure plate 1 presses the part, and thereafter the positive pressure plate 1 does not move downward along with the upper substrate 14.
In order to further ensure the punching precision, in this embodiment, the punching tool further includes a cam pressing plate 12 for mounting the punch 10, the cam pressing plate 12 is slidably mounted on the upper substrate 14, and the cam pressing plate 12 controllably slides along the punching direction of the punch 10, after the punch 10 reaches the pre-alignment position and before the punch 10 punches, there is a distance between the cam pressing plate 12 and the punch 10 and the die sleeve 9 along the punching direction, and the cam pressing plate 12 drives the punch 10 to move along the punching direction until the cam pressing plate 12 presses the part in the punching direction, so that the punching precision is ensured by double pressing on two directions of the part.
In order to locate the punch 10 and the wedge pressing plate 12 and ensure the accuracy of the pre-alignment position, in this embodiment, the punching tool further includes a wedge slider 13 disposed on the upper substrate 14 and a driving seat 11 disposed on the base 15, the wedge pressing plate 12 is movably disposed on the wedge slider 13, the wedge slider 13 has a third inclined plane matched with the butt-joint inclined plane of the driving seat 11, when the third inclined plane contacts with the driving seat 11, the punch 10 just reaches the pre-alignment position, so as to ensure the alignment accuracy and avoid errors between the punch 10 and the die sleeve 9.
The present invention is not limited to the arrangement of the guide bush 4 and the guide post 2, and only needs to be arranged on the upper base 14 and the base 15 respectively. In order to facilitate calculation of the distance and simplify the use of the tool, in this embodiment, the axial directions of the guide sleeve 4 and the guide post 2 are parallel to the stamping direction, so that after the guide post 2 and the guide sleeve 4 are in butt joint, the guide post 2 and the guide sleeve 4 keep the position of the male die 5 on the base 15 unchanged while guiding.
The moving direction of the upper substrate 14 is not particularly limited, and may be the same as or different from the punching direction, and in order to simplify the structural design, in this embodiment, the moving direction of the upper substrate 14 is identical to the punching direction. The moving direction of the upper base 14 is not particularly limited in the present invention, and preferably, the guide sleeve 4 and the guide post 2 need to be disposed parallel to the slotting tool 3 to ensure accurate positioning under double guidance of the guide slope and the first guide structure. In this embodiment, the upper substrate 14 moves in the vertical direction, that is, the moving direction and the punching direction of the upper substrate 14 are both vertical directions; the guide post 2 and the positive pressure plate 1 are vertically arranged on the upper base body 14, and the guide sleeve 4 is vertically arranged on the upper surface of the male die 5. When the male die 5 is in a return state, the guide sleeve 4 and the guide pillar 2 are misplaced, the slotting tool 3 moves downwards along with the upper matrix 14, the driving inclined plane of the slotting tool 3 pushes the male die 5 to move along the upper right corner on the guiding inclined plane, when the driving inclined planes of the slotting tool 3 and the male die 5 are just successfully butted, the upper matrix 14 carries the punch 10 to continue to move downwards to reach the pre-alignment position of the preset punch 10, at the moment, the punch 10 and the female die sleeve 9 are coaxial, and the axial direction of the punch 10 at the moment is the punching direction.
Compared with the prior art, the punch 5 is movably arranged on the base 15, interference of the picking and placing of parts can be avoided through movement of the punch 5, and punching in the punching process can be realized. Meanwhile, the guide inclined plane and the first guide structure are additionally arranged, and as the precision of the guide inclined plane and the precision of the guide structure are very high, the operation precision of the male die 5 is ensured after the added 2 guide measures are adopted, the positioning deviation is avoided, and the punching precision and stability on the movable part can be ensured.
Example 2
Based on the same inventive concept, the punching method provided by the invention is implemented based on the punching tool and comprises the following steps:
the part to be punched is placed on the base 15, specifically, the part to be punched is placed on the cover plate 8 fixedly arranged on the base 15, and the male die 5 is movably arranged, so that the male die 5 can be operated when the part is taken out, and the part can be taken out without interference.
The upper base body 14 is controlled to move a first set distance along the stamping direction so that the male die 5 moves to a first set position along the guide inclined plane, and the guide post 2 is in butt joint with the guide sleeve 4; compared with horizontal guiding in the prior art, the invention ensures the operation precision of the male die 5 through the inclined plane, and avoids the precision error of punching caused by positioning deviation.
The upper base 14 is controlled to move a second set distance in the punching direction so that the punch 10 reaches a pre-alignment position corresponding to the die sleeve 9, at which time the punch 10 is aligned with the die sleeve 9.
The punch 10 is controlled to punch the part to be punched, during the period from the second set distance of movement of the upper base body 14 to punching, the first guide structure formed by the guide post 2 and the guide sleeve 4 accurately positions the position of the male die 5 on the base 15, accurate alignment of the punch 10 and the female die sleeve 9 is guaranteed, double guarantee is carried out on final positioning of the male die 5 through the first guide structure and the guide inclined plane, and after 2 types of guide are skillfully added, the accuracy and stability of punching on the movable part can be guaranteed.
In order to further ensure the punching accuracy, in this embodiment, before the punch 10 is controlled to punch the part to be punched, the punching method further includes: the wedge pressing plate 12 mounted on the upper base 14 is controlled to move along the punching direction and press the part to be punched. In this embodiment, when the punch 10 and the die sleeve 9 are at the pre-alignment position, a certain distance is reserved between the punch 10 and the die sleeve 9, so that collision is avoided, the punch 10 is arranged on the inclined wedge pressing plate 12, and the punch 10 moves along with the inclined wedge pressing plate 12 until the inclined wedge pressing plate 12 presses the part in the punching direction.
In order to avoid the problems of part position deviation and low punching precision caused by vibration and the like before the cam pressing plate 12 presses the part, in this embodiment, before the upper substrate 14 is controlled to continue to move to the second set distance along the punching direction, the punching method further includes: the positive pressure material plate 1 arranged on the upper base body 14 is controlled to press the part to be punched on the cover plate 8.
Application instance
In the application example, the stamping direction is the same as the movement direction of the upper substrate 14, the stamping direction is vertical to the horizontal plane, the axial directions of the slotting tool 3, the guide post 2 and the guide sleeve 4 are all along the vertical direction, the first guide structure formed after the guide post 2 and the guide sleeve 4 are in butt joint ensures that the distance between the male die 5 and the slotting tool 3 is fixed, the male die 5 is positioned at a first set position, and the punching precision is ensured. The specific process comprises the following steps:
step one: the mould is opened, the male mould 5 movably arranged on the base 15 is in a return state, and the part is put on the cover plate 8 (see figure 1).
Step two: after the parts are placed in place, the upper base 14 descends, the slotting tool 3 on the upper base 14 descends together with the upper base 14, and after the slotting tool 3 contacts with the driving inclined surface of the male die 5, the male die 5 starts to move along the guiding direction of the upper V-shaped guide plate 6 and the lower V-shaped guide plate 7 (see fig. 2).
Step three: when the slotting tool 3 continues to descend to 30mm before reaching the bottom, the male die 5 moves in place along the upper V-shaped guide plate 6 and the lower V-shaped guide plate 7 under the drive of the slotting tool, the guide of the upper base body 14 starts to accurately guide with the guide sleeve 4 on the male die 5, and meanwhile the positive pressure plate 1 descends to press the part (see figure 3).
And step four: the guide post 2 and the guide sleeve 4 continue to guide the upper substrate 14 downwards for 25mm, the punch 10 reaches the pre-alignment position, the inclined wedge pressing plate 12 stretches out to press the plate material, and the punch 10 starts to punch until the movement is completed (see fig. 4).
Through the embodiment, the invention has the following beneficial effects or advantages:
1) The invention provides a punching tool capable of ensuring punching precision, wherein a male die is movably arranged on a base, a female die sleeve is arranged on a movable male die for punching, and the movable male die is driven by the female die sleeve to reach a working state for punching during punching; when the parts are taken and placed, the movable male die is in a retreating state, so that interference with the parts is avoided. Meanwhile, the problem of poor punching precision on the movable male die during punching can be effectively solved, and the workshop station area requirement and tooling investment during welding and punching are avoided. The tool cost is reduced while the punching precision is improved, and the method is worth popularizing.
2) Compared with horizontal guiding in the prior art, the punching tool provided by the invention has the advantages that the male die is movably arranged on the base, the male die can be prevented from interfering with the picking and placing of the parts through movement, and punching in the punching process can be realized. Meanwhile, the guide inclined plane and the first guide structure are additionally arranged, and as the precision of the guide inclined plane and the precision of the guide structure are very high, the operation precision of the male die is ensured through the 2 high-precision guide measures, the positioning deviation is avoided, and the punching precision and stability on the movable part can be ensured.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (8)
1. The utility model provides a frock of punching a hole, its characterized in that includes base member, base, first guide structure, terrace die, die sleeve and sets up the drift on the base member, wherein: the base is provided with a guide inclined plane, and the male die is in sliding fit with the guide inclined plane; the female die sleeve is arranged on the male die and matched with the punch; the first guide structure comprises a guide post and a guide sleeve which are matched, one of the guide post and the guide sleeve is arranged on the upper base body, the other is arranged on the male die, and after the upper base body moves for a set distance along the stamping direction, the male die moves to the butt joint of the guide post and the guide sleeve along the guide inclined plane; the male die is provided with an installation inclined plane matched with the guide inclined plane so that the moving direction of the male die has a projection component parallel to the stamping direction; two guide plates which are respectively connected with the base and the male die are arranged between the base and the male die, and two opposite and contacted surfaces of the two guide plates respectively form the installation inclined plane and the guide inclined plane; and the guide inclined plane is provided with a matched second guide structure.
2. The punch tool of claim 1, wherein the second guide structure comprises a boss and a caulking groove; the cross sections of the boss and the caulking groove are V-shaped.
3. The punch tool of claim 1, further comprising a cutting tool disposed on the upper substrate, the cutting tool having a first drive ramp, the punch having a second drive ramp disposed thereon for mating with the first drive ramp.
4. The punching tool according to claim 1, wherein the punching tool further comprises a cover plate for placing a part to be punched and a positive pressure plate for fixing the part to be punched; the cover plate is arranged on the base, and the positive pressure material plate is arranged on the upper base in a sliding manner.
5. A punch tool according to any one of claims 1-4, wherein the axial direction of the guide sleeve and the guide post is arranged parallel to the punching direction.
6. A punching method, characterized in that it is implemented based on the punching tool according to any one of claims 1-5, comprising the following steps:
placing a part to be punched on the base;
controlling the upper base body to move a first set distance along the stamping direction so that the male die moves to a first set position along the guide inclined plane, and the guide post is in butt joint with the guide sleeve;
controlling the upper matrix to move a second set distance along the stamping direction so that the punch reaches a pre-alignment position corresponding to the die sleeve;
and controlling the punch to punch the part to be punched.
7. The press punching method as set forth in claim 6, wherein said press punching method further includes, before said control punch punches said part to be punched: and controlling the wedge pressing plate arranged on the upper base body to move along the punching direction and press the part to be punched.
8. The press punching method as claimed in claim 6 or 7, wherein before said controlling said upper base body to continue to move in said press punching direction to a second set distance, said press punching method further comprises: and controlling a positive pressure material plate arranged on the upper base body to press the part to be punched.
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| CN202110986912.0A CN113894203B (en) | 2021-08-26 | 2021-08-26 | Punching tool and punching method |
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| CN113894203B true CN113894203B (en) | 2024-01-09 |
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| CN102327952A (en) * | 2011-09-16 | 2012-01-25 | 中国第一汽车股份有限公司 | Floating matrix trimming piercing die |
| CN203316568U (en) * | 2013-05-15 | 2013-12-04 | 恩比贝克飞虹汽车零部件(四川)有限公司 | Shaft sleeve side punching multi-hole die |
| CN203725586U (en) * | 2013-12-31 | 2014-07-23 | 芜湖宏昌汽车配件制造有限公司 | Heat-insulating cover double-side punching die |
| CN212703925U (en) * | 2020-07-24 | 2021-03-16 | 上汽大通汽车有限公司南京分公司 | Negative angle side punching mechanism for automobile covering part |
| CN112517792A (en) * | 2020-11-25 | 2021-03-19 | 奇瑞汽车股份有限公司 | Punching device and method for vehicle body sheet metal part |
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2021
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| JPH10263723A (en) * | 1997-03-19 | 1998-10-06 | Hitachi Aic Inc | Structure of press die |
| JP2001252728A (en) * | 2000-03-06 | 2001-09-18 | Press Kogyo Co Ltd | Structure for preventing pressing deviation of press apparatus |
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|---|---|
| CN113894203A (en) | 2022-01-07 |
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