CN116475307B - Online hole flanging die for rolling part and application method of online hole flanging die - Google Patents
Online hole flanging die for rolling part and application method of online hole flanging die Download PDFInfo
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- CN116475307B CN116475307B CN202310437902.0A CN202310437902A CN116475307B CN 116475307 B CN116475307 B CN 116475307B CN 202310437902 A CN202310437902 A CN 202310437902A CN 116475307 B CN116475307 B CN 116475307B
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- die
- hole flanging
- lower die
- punch
- hole
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- 238000005096 rolling process Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004080 punching Methods 0.000 claims abstract description 43
- 238000003825 pressing Methods 0.000 claims abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 238000007723 die pressing method Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000006698 induction Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
- B21D19/088—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for flanging holes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention provides an online hole flanging die for a rolling part and a use method thereof, comprising an upper die holder, wherein the side part of the upper die holder is fixedly connected with a die fixing block, and a hole flanging die is fixed on the side part of the die fixing block; the die fixing block penetrates through the die fixing plate, the die fixing block is connected with the die fixing plate through a first elastic component, the side part of the lower die holder is fixedly connected with the punch fixing block, and the side part of the punch fixing block is fixedly provided with a hole flanging punch; the punch fixing block penetrates through the lower die fixing plate and the lower die cushion plate, and the punch fixing block is connected with the lower die fixing plate and the lower die cushion plate through a second elastic assembly; the hole flanging punch is matched with the hole flanging die to roll the hole flanging of the pressing piece; the positions of the hole flanging punch and the hole flanging die can be automatically adjusted by utilizing the telescopic principle of the elastic component; the problem that the pre-punching position is unstable due to roll forming and laser induction errors in the actual production process, so that hole flanging is uneven and the height and the size of the hole flanging are out of tolerance is avoided.
Description
Technical Field
The invention relates to the technical field of hole flanging, in particular to an online hole flanging die for a rolling part and a use method thereof.
Background
The conventional thickness of a rolling part of the automobile side beam is about 3mm, a fixing bolt is required on the rolling part, and teeth with the thickness M8 of 3mm can only tap 2.5 teeth (tooth distance is 1.25), so that the bolt cannot be effectively fixed; therefore, in order to meet the requirement, a hole needs to be turned at the position needing tapping, so that the local thickness of the tapping position reaches more than 4.5 MM; if the hole is turned down on line, the length of the part is close to 11 meters, so that the operation is difficult, the operation is required by multiple persons, the travelling crane is occupied, the production efficiency is low, and the production cost is wasted.
In order to save production cost and improve production efficiency, equipment capable of matching synchronous on-line hole flanging on a rolling production line is needed.
The conventional hole flanging die can ensure the position degree requirement of the hole, but when the position degree of the pre-punched hole is unstable. For example, when the position of the pre-punched hole is eccentric, the hole flanging height is uneven, the situation that the hole flanging height is higher and lower at one side and the situation that the hole flanging height is higher and lower at the other side exists, and even the problem that the hole flanging height exceeds the tolerance at one side without hole flanging is serious; the quality of the side beam is seriously affected.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide an online hole flanging die for a rolling part and a use method thereof, which can solve the problems that when the existing pre-punched hole is eccentric in position, the hole flanging height is uneven, the situation that one side is high and the other side is low, and the situation that the other side is high and the other side is low, and even the eccentric situation that the hole flanging height exceeds the tolerance is serious, the hole flanging is not performed.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention is realized by the following technical scheme: the on-line hole flanging die for the rolling piece comprises an upper die holder, a die fixing plate, a lower die holder, a lower die fixing plate and a lower die pad plate, wherein the side part of the upper die holder is fixedly connected with a die fixing block, and a hole flanging die is fixed on the side part of the die fixing block; the female die fixing block penetrates through the female die fixing plate, and the female die fixing block is connected with the female die fixing plate through a first elastic component;
the side part of the lower die holder is fixedly connected with a punch fixing block, and a hole flanging punch is fixed on the side part of the punch fixing block; the punch fixing block penetrates through the lower die fixing plate and the lower die cushion plate, and the punch fixing block is connected with the lower die fixing plate and the lower die cushion plate through a second elastic assembly; the hole flanging punch is matched with the hole flanging die to roll the hole flanging of the pressing piece.
Further, the structure of the first elastic component is the same as that of the second elastic component, the first elastic component comprises a spring or a shrapnel, and one or more first elastic components are arranged on four sides of the female die fixing block in a rectangular structure.
Further, the structure of the first elastic component is the same as that of the second elastic component, the first elastic component comprises an elastic gasket, and the female die fixing block with the rectangular structure is fixedly penetrated by the first elastic component.
Further, a plurality of upper die guide posts are fixed on the surface of the female die fixing plate, and the upper die guide posts penetrate through the upper die pressing plate; the surface of the lower die fixing plate is provided with a lower die guide sleeve, and the lower die guide sleeve is connected with the upper die guide post in a matched mode.
Further, a lower die plate is arranged at the top end of the lower die fixing plate, a plurality of equal-height screws are fixed on the side part of the lower die base plate, and the equal-height screws penetrate through the lower die fixing plate and the lower die plate; the end parts of the equal-height screws are connected with the lower die floating plate in a sliding manner; and a nitrogen spring is fixed on the surface of the lower die fixing plate.
Further, the hole flanging punch comprises a punching part and a supporting part, wherein a limiting hole is formed in the supporting part, and the punching part is inserted into and slidingly connected with the limiting hole; the stamping part is connected with the limiting hole through a compression spring; a chute with an arc structure is arranged in the limiting hole, and a sliding block is fixed on the side part of the stamping part; the sliding block is inserted into and slidingly connected with the sliding groove.
Further, the cross section of one end of the stamping part inserted into the limit hole is of a trapezoid structure, and the shape of the limit hole is matched with the trapezoid structure of the stamping part; the other end of the punching part forms a bullet shape.
The application method of the online hole flanging die for the rolled piece comprises the following steps:
s1, rolling and forming a rolling piece to enter a preset position of hole flanging;
s2, pushing the lower die to move upwards by the pushing assembly, wherein after the lower die floating plate is contacted with the rolling piece, the lower die floating plate does not move any more, and the lower die plate, the lower die fixing plate, the lower die backing plate and the lower die holder continue to move upwards until the nitrogen spring is compressed; when the hole flanging punch enters the roller pressing piece, if the position of the pre-punching hole on the roller pressing piece is eccentric with the position of the hole flanging punch, a lateral force is generated to enable the hole flanging punch to be transmitted to the punch fixing block, and the punch fixing block deflects to the periphery until the hole flanging punch is aligned with the pre-punching hole on the roller pressing piece because the periphery of the punch fixing block is provided with the second elastic component;
s3, when the hole flanging punch and the pre-punching on the roller press are aligned and continuously enter the hole flanging die upwards, the hole flanging die correspondingly presses the first elastic component to the periphery to carry out position adjustment under the force of the hole flanging punch until the first elastic component is completely matched with the hole flanging punch;
s4, after the die is closed, the hole flanging punch completely enters the hole flanging female die, and hole flanging is completed.
Further, before hole flanging, the distance between the hole flanging punch and the rolling piece is 1mm.
According to the invention, the positions of the hole flanging punch and the hole flanging die can be automatically adjusted by utilizing the telescopic principle of the elastic component according to the fact that the punch fixing block of the hole flanging punch is placed in the elastic component and the die fixing block of the hole flanging die is placed in the elastic component; the problem that the pre-punching position is unstable due to roll forming and laser induction errors in the actual production process, so that hole flanging is uneven and the height dimension of the hole flanging is out of tolerance is avoided; the problem of product scrapping caused by out-of-tolerance hole flanging size is avoided; the invention improves the yield and reduces the production cost; the rolling piece manufactured by the method has the characteristics of uniform flanging height, accords with tolerance and unstable flanging position degree, and meets product tolerance and use requirements.
Drawings
The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for purposes of illustration only and are not intended to limit the scope of the present invention in which like reference numerals are used to designate like parts. Wherein:
FIG. 1 is a schematic diagram of the overall structure of an online hole flanging die for a rolling piece;
FIG. 2 is a schematic diagram of a connection structure among an upper die holder, a die fixing plate and a die fixing block according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a connection structure among a lower die fixing plate, a lower die backing plate and a lower die holder according to an embodiment of the invention;
FIG. 4 is a schematic diagram of the structure of the hole flanging in the embodiment of the present invention;
FIG. 5 is a schematic view showing the internal structure of a supporting portion according to an embodiment of the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 4A according to the present invention;
the reference numerals in the drawings indicate: 1. an upper die holder; 2. a female die fixing plate; 3. an upper die pressing plate; 4. an upper die guide post; 5. a roll pressing member; 6. a lower die float plate; 7. a lower template; 8. a lower die fixing plate; 9. a lower die backing plate; 10. a lower die holder; 11. a female die fixing block; 12. a first elastic component; 13. hole flanging female die; 14. a nitrogen spring; 15. a contour screw; 16. a lower die guide sleeve; 17. a punch fixing block; 18. hole flanging punch; 19. a second elastic component; 20. a punching part; 21. a support part; 22. a slide block; 23. a compression spring; 24. a chute; 25. and a limiting hole.
Detailed Description
It is to be understood that, according to the technical solution of the present invention, those skilled in the art may propose various alternative structural modes and implementation modes without changing the true spirit of the present invention. Accordingly, the following detailed description and drawings are merely illustrative of the invention and are not intended to be exhaustive or to limit the invention to the precise form disclosed.
The on-line hole flanging die for the rolled piece comprises an upper die holder 1, a female die fixing plate 2, a lower die holder 10, a lower die fixing plate 8 and a lower die pad plate 9, wherein the upper die holder 1 is attached to the female die fixing plate 2, the side part of the upper die holder 1 is fixedly connected with a female die fixing block 11, and the female die fixing block 11 penetrates through the female die fixing plate 2; as shown in fig. 2, a hole flanging die 13 is fixed on the side part of the die fixing block 11; the die fixing block 11 is connected with the die fixing plate 2 through a first elastic component 12,
a plurality of upper die guide posts 4 are fixed on the side part of the die fixing plate 2, and illustratively, four upper die guide posts 4 are arranged, an upper die pressing plate 3 is arranged on the side part of the die fixing plate 2, and the four upper die guide posts 4 penetrate through the upper die pressing plate 3; the upper die pressing plate 3 is used for pressing a rolling piece 5 to be processed; the upper die is formed by an upper die holder 1, a female die fixing plate 2, an upper die pressing plate 3, an upper die guide post 4, a female die fixing block 11, a first elastic component 12 and a hole flanging female die 13.
The end part of the lower die holder 10 is attached to a lower die cushion plate 9, the end part of the lower die cushion plate 9 is attached to a lower die fixing plate 8, and the end part of the lower die fixing plate 8 is attached to a lower die plate 7; the side part of the lower die holder 10 is fixedly connected with a punch fixing block 17, and as shown in fig. 3, the side part of the punch fixing block 17 is fixedly provided with a hole flanging punch 18; the punch fixing block 17 penetrates through the lower die fixing plate 8 and the lower die cushion plate 9, the hole flanging punch 18 penetrates through the lower die plate 7, and the punch fixing block 17 is connected with the lower die fixing plate 8 and the lower die cushion plate 9 through a second elastic component 19;
the surface of the lower die fixing plate 8 is provided with lower die guide sleeves 16, the number and the interval of the lower die guide sleeves 16 are matched with those of the upper die guide posts 4, and the lower die guide sleeves 16 are provided with four; the upper die guide post 4 penetrates through the lower die floating plate 6 to be matched and connected with the lower die guide sleeve 16, and the upper die and the lower die are matched and connected through the upper die guide post 4 and the lower die guide sleeve 16 to be positioned;
a plurality of contour screws 15 are fixed on the side parts of the lower die backing plate 9, and the contour screws 15 penetrate through the lower die fixing plate 8 and the lower die plate 7; the end part of the equal-height screw 15 is connected with the lower die floating plate 6 in a sliding way; the lower die floating plate 6 is used for supporting the rolling part 5; the nitrogen spring 14 is fixed on the surface of the lower die fixing plate 8; the lower die floating plate 6, the lower die plate 7, the lower die fixing plate 8, the lower die cushion plate 9, the lower die holder 10, the nitrogen spring 14, the equal-height screw 15, the lower die guide sleeve 16, the punch fixing block 17, the hole flanging punch 18 and the second elastic component 19 form a lower die.
The first elastic component 12 and the second elastic component 19 of the present invention are realized by the following embodiments:
embodiment case one:
the structure of the first elastic component 12 is the same as that of the second elastic component 19, the first elastic component 12 comprises a spring or a shrapnel, and one or more first elastic components 12 are arranged on four sides of the female die fixing block 11 with a rectangular structure; the springs or the elastic sheets are distributed around the female die fixing block 11;
the second elastic component 19 has the same structure and connection relationship with the first elastic component 12, that is, the second elastic component 19 includes a spring or a shrapnel; the springs or the elastic sheets are distributed around the punch fixing block 17;
when the position of the pre-punching hole on the surface of the rolling piece 5 and the position of the hole flanging punch 18 are eccentric, a lateral force is generated to enable the hole flanging punch 18 to be transmitted to the punch fixing block 17, and the punch fixing block 17 deflects to one side until the hole flanging punch 18 is aligned with the pre-punching hole on the rolling piece because the second elastic component 19 is arranged around the punch fixing block 17;
when the pre-punching alignment of the hole flanging punch 18 and the roller press continues to enter the hole flanging die 13 upwards, the hole flanging die 13 correspondingly presses the first elastic component 12 to the side part by the force of the hole flanging punch 18 to adjust the position until the hole flanging punch 18 is completely matched with the hole flanging die; and (5) hole flanging is completed.
The spring of the present invention is preferably a youli rubber spring.
Implementation case two:
the structure of the first elastic component 12 is the same as that of the second elastic component 19, the first elastic component 12 comprises an elastic gasket, and the female die fixing block 11 with a rectangular structure is fixedly penetrated by the first elastic component 12;
the second elastic component 19 has the same structure and connection relationship as the first elastic component 12, and the second elastic component 19 comprises an elastic gasket; the punch fixing block 17 with a rectangular structure is fixedly penetrated by the second elastic component 19;
when the position of the pre-punching hole on the surface of the rolling piece 5 and the position of the hole flanging punch 18 are eccentric, a lateral force is generated to enable the hole flanging punch 18 to be transmitted to the punch fixing block 17, and the punch fixing block 17 deflects to one side until the hole flanging punch 18 is aligned with the pre-punching hole on the rolling piece because the second elastic component 19 is arranged around the punch fixing block 17;
when the pre-punching alignment of the hole flanging punch 18 and the roller press continues to enter the hole flanging die 13 upwards, the hole flanging die 13 correspondingly presses the first elastic component 12 to the side part by the force of the hole flanging punch 18 to adjust the position until the hole flanging punch 18 is completely matched with the hole flanging die; and (5) hole flanging is completed.
Because the thickness of the rolling piece 5 needing hole flanging is thinner, hole flanging is carried out in a stamping mode, and hole flanging is completed through extrusion of the hole flanging punch 18 and the hole flanging die 13; when the hole flanging punch 18 is in stamping completion and resetting, the pressure between the roll-casting die 5 and the hole flanging punch 18 is large, so that the roll-casting die 5 is very easy to be driven to locally pull back when the hole flanging punch 18 is in quick resetting, and the flatness and the precision of hole flanging are affected; to alleviate this problem, the following structure is provided, as shown in fig. 4-6:
the hole flanging punch 18 comprises a punching part 20 and a supporting part 21, wherein a limiting hole 25 is formed in the supporting part 21, and the punching part 20 is inserted into and slidingly connected with the limiting hole 25; the punching part 20 is connected with the limit hole 25 through a compression spring 23; a chute 24 with an arc structure is arranged in the limit hole 25, and a sliding block 22 is fixed on the side part of the stamping part 20; the sliding block 22 is inserted into and slidingly connected with the sliding groove 24;
the cross section of one end of the stamping part 20 inserted into the limiting hole 25 is of a trapezoid structure, and the shape of the limiting hole 25 is matched with the trapezoid structure of the stamping part 20; the other end of the pressing portion 20 is formed in a bullet shape.
When the hole flanging punch 18 is pressed in contact with the roll pressing piece 5, the punching part 20 moves backwards, the compression spring 23 is compressed, and the sliding block 22 moves in the sliding groove 24 when the punching part 20 moves backwards due to the limit of the sliding groove 24, so that the punching part 20 rotates when moving backwards, and when the hole flanging punch 18 punches, the punching part 20 rotates backwards by a certain distance after being pressed, and then hole flanging is performed; the force for entering the rolling piece 5 can be increased by entering the pre-punching hole in a rotating mode, so that the punching part 20 can enter the pre-punching hole faster; after the punching is completed, along with the distance from the hole flanging punch 18, the compression spring 23 is reset, at the moment, the punching part 20 returns to enable the punching part 20 to rotate again, and the punching part 20 rotates in the hole which is flanged by the roller pressing piece 5, so that the punching part 20 is separated from the roller pressing piece 5, the flanged hole is smoother, and meanwhile, the deformation of the roller pressing piece 5 caused by extrusion when the punching part 20 is pulled out can be effectively avoided.
The invention also provides a using method of the online hole flanging die for the rolling piece, which comprises the following steps:
s1, rolling and forming a rolling piece 5 to enter a preset position of hole flanging; specifically, the rolling part 5 continues to convey forwards after the rolling forming is finished; the laser senses that the roll pressing member 5 reaches a predetermined position;
s2, a pushing component (a lower die oil cylinder) pushes the lower die to move upwards as a whole, after the lower die floating plate 6 is contacted with the roller pressing piece 5, the lower die floating plate 6 does not move any more, and the lower die plate 7, the lower die fixing plate 8, the lower die cushion plate 9 and the lower die holder 10 continue to move upwards until the nitrogen spring 14 is compressed; when the hole flanging punch 18 enters the rolling piece 5, if the position of the pre-punching hole on the rolling piece 5 is eccentric to the position of the hole flanging punch 18, a lateral force is generated to enable the hole flanging punch 18 to be transmitted to the punch fixing block 17, and the periphery of the punch fixing block 17 is provided with the second elastic component 19, so that the punch fixing block 17 deflects to one side around until the hole flanging punch 18 is aligned with the pre-punching hole on the rolling piece 5;
s3, when the hole flanging punch 18 and the pre-punching on the rolling piece 5 are aligned and continuously enter the hole flanging die 13 upwards, the hole flanging die 13 correspondingly presses the first elastic component 12 to the periphery to carry out position adjustment under the force of the hole flanging punch 18 until the hole flanging punch 18 is completely matched with the hole flanging die;
s4, after the die is closed, the hole flanging punch 18 completely enters the hole flanging die 13, and hole flanging is completed.
To ensure that hole punching can be performed, the distance between the hole punching punch 18 and the roll is 1mm before hole punching.
The invention aims to provide an online hole flanging die for rolled parts and a working method thereof, and particularly relates to a hole flanging die capable of carrying out fine adjustment according to the position of a pre-punched hole, which is characterized by the characteristic that an elastic component is stressed greatly and can be compressed and the characteristic that the stress is small and can be prolonged; the manufactured parts are characterized in that the flanging height is uniform, the tolerance is met, the flanging position is unstable, and the product tolerance and the use requirement are met.
According to the invention, the positions of the hole flanging punch and the hole flanging die can be automatically adjusted by utilizing the telescopic principle of the elastic component according to the fact that the punch fixing block of the hole flanging punch is placed in the elastic component and the die fixing block of the hole flanging die is placed in the elastic component; the problem that the pre-punching position is unstable due to roll forming and laser induction errors in the actual production process, so that hole flanging is uneven and the height dimension of the hole flanging is out of tolerance is avoided; the problem of product scrapping caused by out-of-tolerance hole flanging size is avoided; the invention improves the yield and reduces the production cost; the rolling piece manufactured by the method has the characteristics of uniform flanging height, accords with tolerance and unstable flanging position degree, and meets product tolerance and use requirements.
The technical scope of the present invention is not limited to the above description, and those skilled in the art may make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and these changes and modifications should be included in the scope of the present invention.
Claims (4)
1. The application method of the online hole flanging die for the rolled piece is characterized by comprising the following steps of: the method comprises the following steps:
s1, rolling forming of a rolling piece (5) is carried out, and the rolling piece enters a preset position of hole flanging;
s2, pushing the lower die to move upwards integrally by a pushing assembly, wherein after the lower die floating plate (6) is contacted with the rolling piece (5), the lower die floating plate (6) is not moved any more, and the lower die plate (7), the lower die fixing plate (8), the lower die cushion plate (9) and the lower die holder (10) continue to move upwards until the nitrogen spring (14) is compressed; when the hole flanging punch (18) extrudes the rolling piece (5), if the pre-punching hole on the rolling piece (5) is eccentric to the position of the hole flanging punch (18), a lateral force is generated to enable the hole flanging punch (18) to be transmitted to the punch fixing block (17), and the punch fixing block (17) deflects to the periphery until the hole flanging punch (18) is aligned with the pre-punching hole on the rolling piece (5) because the periphery of the punch fixing block (17) is provided with the second elastic component (19);
s3, when the pre-punching alignment of the hole flanging punch (18) and the rolling piece (5) continues to enter the hole flanging die (13) upwards, the hole flanging die (13) correspondingly presses the first elastic component (12) to the periphery to carry out position adjustment under the force of the hole flanging punch (18) until the first elastic component is completely matched with the hole flanging punch (18);
s4, after the die is closed, the hole flanging punch (18) completely enters the hole flanging die (13), and hole flanging is completed;
the online hole flanging die for the rolling part adopted by the using method of the online hole flanging die for the rolling part comprises the following steps:
the die comprises an upper die holder (1), a die fixing plate (2), a lower die holder (10), a lower die fixing plate (8) and a lower die pad plate (9), wherein the side part of the upper die holder (1) is fixedly connected with a die fixing block (11), and a hole flanging die (13) is fixed on the side part of the die fixing block (11); the female die fixing block (11) penetrates through the female die fixing plate (2), the female die fixing block (11) is connected with the female die fixing plate (2) through a first elastic component (12),
the side part of the lower die holder (10) is fixedly connected with a punch fixing block (17), and a hole flanging punch (18) is fixed on the side part of the punch fixing block (17); the punch fixing block (17) penetrates through the lower die fixing plate (8) and the lower die cushion plate (9), and the punch fixing block (17) is connected with the lower die fixing plate (8) and the lower die cushion plate (9) through a second elastic component (19); the hole flanging punch (18) is matched with the hole flanging die (13) to roll the hole flanging of the pressing piece (5);
the structure of the first elastic component (12) is the same as that of the second elastic component (19); the first elastic component (12) comprises a spring or a shrapnel, and one or a plurality of first elastic components (12) are arranged on four sides of the female die fixing block (11) with the rectangular structure;
or the first elastic component (12) comprises an elastic gasket, and the female die fixing block (11) with a rectangular structure is fixedly penetrated by the first elastic component (12);
the hole flanging punch (18) comprises a punching part (20) and a supporting part (21), wherein a limiting hole (25) is formed in the supporting part (21), and the punching part (20) is inserted into and slidingly connected with the limiting hole (25); the stamping part (20) is connected with the limit hole (25) through a compression spring (23); a chute (24) with an arc structure is arranged in the limit hole (25), and a sliding block (22) is fixed on the side part of the stamping part (20); the sliding block (22) is inserted into and slidingly connected with the sliding groove (24);
the cross section of one end of the stamping part (20) inserted into the limit hole (25) is of a trapezoid structure, and the shape of the limit hole (25) is matched with the trapezoid structure of the stamping part (20); the other end of the pressing part (20) forms a bullet shape.
2. The method for using the online hole flanging die for rolling parts according to claim 1, wherein the method comprises the following steps: a plurality of upper die guide posts (4) are fixed on the surface of the female die fixing plate (2), and the upper die guide posts (4) penetrate through the upper die pressing plate (3); the surface of the lower die fixing plate (8) is provided with a lower die guide sleeve (16), and the lower die guide sleeve (16) is connected with the upper die guide post (4) in a matching way.
3. The method for using the online hole flanging die for rolling parts according to claim 2, wherein the method comprises the following steps: the top end of the lower die fixing plate (8) is provided with a lower die plate (7), a plurality of equal-height screws (15) are fixed on the side part of the lower die cushion plate (9), and the equal-height screws (15) penetrate through the lower die fixing plate (8) and the lower die plate (7); the end part of the equal-height screw (15) is connected with the lower die floating plate (6) in a sliding way; the nitrogen spring (14) is fixed on the surface of the lower die fixing plate (8).
4. The method for using the online hole flanging die for rolling parts according to claim 1, wherein the method comprises the following steps: the distance between the hole flanging punch (18) and the roller (5) is 1mm before hole flanging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310437902.0A CN116475307B (en) | 2023-04-23 | 2023-04-23 | Online hole flanging die for rolling part and application method of online hole flanging die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310437902.0A CN116475307B (en) | 2023-04-23 | 2023-04-23 | Online hole flanging die for rolling part and application method of online hole flanging die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
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