CN111531004B - Hole flanging die capable of inhibiting cracking and hole flanging process - Google Patents
Hole flanging die capable of inhibiting cracking and hole flanging process Download PDFInfo
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- CN111531004B CN111531004B CN202010409328.4A CN202010409328A CN111531004B CN 111531004 B CN111531004 B CN 111531004B CN 202010409328 A CN202010409328 A CN 202010409328A CN 111531004 B CN111531004 B CN 111531004B
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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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- 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
- 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
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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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention discloses a hole flanging die capable of inhibiting cracking, which comprises an upper die, a material pressing mechanism and a lower die, wherein the material pressing mechanism is positioned between the upper die and the lower die, and the lower die is positioned at the lower part of the upper die; the upper die comprises an upper die seat, a first base plate and an upper die plate, and the material pressing mechanism comprises a second base plate and a material pressing plate; the lower die comprises a lower die base, a third backing plate and a lower die plate. The invention also discloses a hole flanging process capable of inhibiting cracking, which comprises the following steps: the method comprises the following steps: feeding; step two: pre-punching a bottom hole; step three: repairing the fault reversely; step four: repairing the bottom hole for the second time; step five: and (5) hole flanging. The invention improves the technical problems that after hole flanging, parts have serious cracking conditions, the quality of the parts is low and the like in the prior art, and has the advantages of inhibiting hole flanging cracking, improving the quality of the parts and the like.
Description
Technical Field
The invention relates to the technical field of hole flanging, in particular to a hole flanging die capable of inhibiting cracking and a hole flanging process.
Background
The hole flanging is a punching processing method for flanging the hole edge on a plate into a vertical edge by using a die, is one of flanging in a forming die, belongs to a plastic deformation process in a punching basic process, and is mainly used for manufacturing a part equipped with other parts or processing a specific shape for improving the rigidity of the part. The method can be used for processing the three-dimensional parts with more complex shapes, good rigidity and reasonable space shapes, and can also be used as a means for controlling cracking or creasing when large sheet metal parts are formed.
The hole flanging process in the prior art still has defects, a bottom hole needs to be machined in the first step of the hole flanging process, and the machining and repairing of the bottom hole in the prior art are often not required, so that the part is seriously cracked after hole flanging, and the quality of the part is low.
Aiming at the technical problems, the invention discloses a hole flanging process capable of inhibiting cracking, and the hole flanging process has the advantages of inhibiting hole flanging cracking, improving the quality of parts and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a hole flanging die capable of inhibiting cracking and a hole flanging process, and aims to solve the technical problems that after hole flanging is carried out in the prior art, serious cracking occurs on parts, the quality of the parts is low and the like.
The invention is realized by the following technical scheme: the invention discloses a hole flanging die capable of inhibiting cracking, which comprises an upper die, a material pressing mechanism and a lower die, wherein the material pressing mechanism is positioned between the upper die and the lower die, and the lower die is positioned at the lower part of the upper die; the upper die comprises an upper die base, a first base plate and an upper die plate, the first base plate is fixedly arranged at the bottom end of the upper die base, the upper die plate is fixedly arranged at the bottom end of the first base plate, and a first punch, a second punch and a third punch are sequentially arranged at the bottom end of the upper die plate from left to right; the pressing mechanism can be arranged at the bottom end of the upper die in a vertical sliding mode, the pressing mechanism comprises a second base plate and a pressing plate, the second base plate is located at the lower portion of the upper die plate, the pressing plate is fixedly arranged at the bottom end of the second base plate, a first female die, a second female die, a third female die, a fourth female die and an avoiding groove are sequentially arranged on the pressing plate from left to right, the first female die and a first punch are correspondingly arranged, the first punch downwards penetrates through the second base plate and penetrates into the first female die, the first punch can continuously penetrate out of the first concave die downwards, the third concave die is arranged corresponding to the second punch, the second punch penetrates through the second cushion plate downwards and penetrates into the third concave die, the second punch can continuously penetrate out of the third concave die downwards, the fourth concave die is arranged corresponding to the third punch in position, the third punch downwards penetrates through the second base plate to penetrate into the fourth concave die, and the third punch can continuously penetrate out of the fourth concave die downwards; the lower die comprises a lower die base, a third base plate and a lower die plate, the third base plate is fixedly arranged at the top end of the lower die base, the lower die plate is fixedly arranged at the top end of the third base plate and is positioned at the lower part of the pressure plate, a fifth female die, a fourth punch, a sixth female die and a seventh female die are sequentially arranged at the top end of the lower die plate from left to right, the fifth female die is arranged opposite to the first female die, the fourth punch is arranged opposite to the second female die, a top block is also arranged at the top end of the lower die plate in a floating manner, a through hole is formed in the middle of the top block, the top of the fourth punch is positioned in the through hole, the sixth female die is arranged opposite to the third female die, the seventh female die is arranged opposite to the fourth female die, a clamping column is also arranged at the top end of the lower die plate in a floating manner, the clamping column is arranged corresponding to the avoiding groove, a clamping groove is formed in the side wall of the clamping column, a guide column is arranged at the top end of the lower die base, and the top end of the guide column penetrates through the upper die base and is fixedly connected with a limiting sleeve, the guide post is sleeved with a first spring, and the first spring is positioned between the upper die holder and the lower die holder.
Further, for the bottom of better realization swager constructs slidable mounting at last mould from top to bottom to make better pressfitting between cope match-plate pattern and the second backing plate, both ends are vertical respectively and have seted up the spout about the cope match-plate pattern top, are provided with the limiting plate in the spout, and the top of second backing plate is provided with the jacking post, and the top of jacking post runs through cope match-plate pattern and limiting plate fixed connection, sets up the second spring between the top of limiting plate and the bottom of first backing plate.
Further, for make the kicking block with press from both sides the better unsteady top of installing at the lower bolster of post to better float the pay-off to the steel band, first mounting groove and second mounting groove have been seted up on the top of lower bolster, the kicking block is located first mounting groove and second mounting groove respectively with the bottom of pressing from both sides the post, and the bottom of kicking block all is connected with the lower bolster through the third spring with the bottom of pressing from both sides the post, the stiffness coefficient of third spring is less than the stiffness coefficient of second spring.
Further, for better floating transmission of the steel strip, the number of the avoiding grooves and the clamping columns is two, the two avoiding grooves are formed in the front end and the rear end of the bottom of the pressure plate, the two clamping columns are correspondingly arranged at the front end and the rear end of the top of the lower template, and the clamping grooves are correspondingly arranged on the opposite side walls of the two clamping columns.
Furthermore, in order to prevent the clamping damage of the steel belt caused by the clamping columns, rubber pads are arranged in the clamping grooves.
The invention also discloses a hole flanging process capable of inhibiting cracking, which comprises the following steps:
the method comprises the following steps: feeding, namely feeding a steel belt to be subjected to hole flanging through a feeding machine, enabling the steel belt to enter a position between a material pressing plate and a lower template in a die, enabling the steel belt to be positioned at the upper part of a top block, and enabling the side edge of the steel belt to be clamped in a clamping groove;
step two: pre-punching a bottom hole, closing the die, and enabling a first punch in the upper die to downwards penetrate through the first female die and the steel strip to enter a fifth female die, so that the bottom hole is pre-punched on the steel strip;
step three: reversely repairing the fault, opening the die, continuously conveying the steel belt forwards through the feeder, conveying the bottom hole to the upper part of a fourth punch head in the lower die, closing the die again at the moment, and enabling the fourth punch head to upwards penetrate through the bottom hole to enter a second concave die so as to reversely repair the fault of the bottom hole;
step four: repairing the bottom hole for the second time, opening the die, continuously conveying the steel belt forwards through the feeder, conveying the bottom hole after repairing the fault to the lower part of the second punch, closing the die again at the moment, enabling the second punch to downwards penetrate through the third female die and the bottom hole to enter the sixth female die, and repairing burrs and the fault of the bottom hole again;
step five: and hole flanging, die opening, continuously conveying the steel strip forwards through the feeder, conveying the repaired bottom hole to the lower part of the third punch, closing the die again at the moment, and enabling the third punch to downwards penetrate through the fourth female die and the bottom hole to enter the seventh female die to complete hole flanging.
The invention has the following advantages: according to the invention, a primary bottom hole repairing process is added after the bottom hole is punched, so that the ratio of a bright band on the cutting surface of the bottom hole is increased, and meanwhile, the fault direction of the bottom hole is opposite to the hole flanging direction, so that the condition that a part is cracked during hole flanging is inhibited.
Drawings
FIG. 1 is a schematic view of the mold structure of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
FIG. 3 is a schematic view of a top block structure;
figure 4 is a side view of the clamp post.
In the figure: 1. an upper die; 11. an upper die holder; 12. a first backing plate; 13. mounting a template; 131. a first punch; 132. a second punch; 133. a third punch; 134. a chute; 2. a material pressing mechanism; 21. a second backing plate; 22. a material pressing plate; 211. jacking the column; 221. a first female die; 222. a second female die; 223. a third female die; 224. a fourth female die; 225. an avoidance groove; 3. a lower die; 31. a lower die holder; 32. a third base plate; 33. a lower template; 311. a guide post; 331. a fifth female die; 332. a fourth punch; 333. a sixth female die; 334. a seventh female die; 4. a limiting plate; 5. a second spring; 6. a top block; 61. a through hole; 7. clamping the column; 71. a clamping groove; 8. a third spring; 9. a limiting sleeve; 10. a first spring; 100. a steel strip.
Detailed Description
In the description of the present invention, words like "front", "rear", etc. indicating directions or positional relationships are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed in a specific direction and be operated, and thus, should not be construed as limiting the present invention.
Example 1
Embodiment 1 discloses a hole flanging die capable of suppressing cracking, as shown in fig. 1, including an upper die 1, a material pressing mechanism 2 and a lower die 3, wherein the material pressing mechanism 2 is located between the upper die 1 and the lower die 3, and the lower die 3 is located at the lower part of the upper die 1; the upper die 1 comprises an upper die base 11, a first base plate 12 and an upper die plate 13, wherein the first base plate 12 is fixedly arranged at the bottom end of the upper die base 11, the upper die plate 13 is fixedly arranged at the bottom end of the first base plate 12, and a first punch 131, a second punch 132 and a third punch 133 are sequentially arranged at the bottom end of the upper die plate 13 from left to right; the pressing mechanism 2 can be installed at the bottom end of the upper die 1 in a vertically sliding mode, the pressing mechanism 2 comprises a second base plate 21 and a pressing plate 22, the second base plate 21 is located at the lower portion of the upper die plate 13, and the pressing plate 22 is fixedly installed at the bottom end of the second base plate 21; as shown in fig. 1 and 2, the left and right ends of the top of the upper die plate 13 are vertically provided with sliding grooves 134, a stopper plate 4 is arranged in each sliding groove 134, a lifting column 211 is arranged at the top end of the second base plate 21, the top end of the lifting column 211 penetrates through the upper die plate 13 and is fixedly connected with the stopper plate 4, a second spring 5 is arranged between the top end of the stopper plate 4 and the bottom end of the first base plate 12, a first female die 221, a second female die 222, a third female die 223, a fourth female die 224 and an avoiding groove 225 are sequentially arranged on the pressure plate 22 from left to right, the first female die 221 and the first punch 131 are correspondingly arranged, the first punch 131 penetrates through the second base plate 21 downwards and penetrates into the first female die 221, the first punch 131 can continuously penetrate through the first female die 221 downwards, the third female die 223 corresponds to the second punch 132, the second punch 132 penetrates through the second base plate 21 downwards and penetrates into the third female die 223, the second punch 132 can continuously penetrate out of the third concave die 223 downwards, the fourth concave die 224 is arranged corresponding to the third punch 133 in position, the third punch 133 penetrates into the fourth concave die 224 downwards through the second cushion plate 21, and the third punch 133 can continuously penetrate out of the fourth concave die 224 downwards; the lower die 3 comprises a lower die holder 31, a third cushion plate 32 and a lower die plate 33, the third cushion plate 32 is fixedly installed at the top end of the lower die holder 31, the lower die plate 33 is fixedly installed at the top end of the third cushion plate 32, the lower die plate 33 is located at the lower part of the pressure plate 22, a fifth female die 331, a fourth punch 332, a sixth female die 333 and a seventh female die 334 are sequentially arranged at the top end of the lower die plate 33 from left to right, the fifth female die 331 is arranged opposite to the first female die 221, the fourth punch 332 is arranged opposite to the second female die 222, and a top block 6 is further arranged at the top end of the lower die plate 33 in a floating manner; as shown in fig. 3, a through hole 61 is formed in the middle of the top block 6; as shown in fig. 1 and 3, the top of the fourth punch 332 is located in the through hole 61, the sixth die 333 is opposite to the third die 223, the seventh die 334 is opposite to the fourth die 224, the top of the lower template 33 is also provided with a clamping column 7 in a floating manner, and the clamping column 7 is corresponding to the avoiding groove 225; as shown in fig. 4, the side walls of the clamping columns 7 are provided with clamping grooves 71, rubber pads (not shown) are arranged in the clamping grooves 71, the number of the avoiding grooves 225 and the number of the clamping columns 7 are two, the two avoiding grooves 225 are arranged at the front end and the rear end of the bottom of the pressure plate 22, the two clamping columns 7 are correspondingly arranged at the front end and the rear end of the top of the lower template 33, the clamping grooves 71 are correspondingly arranged on the side walls of the two clamping columns 7 opposite to each other, specifically, the top end of the lower template 33 is provided with a first mounting groove (not shown) and a second mounting groove (not shown), the bottoms of the top block 6 and the clamping columns 7 are respectively located in the first mounting groove and the second mounting groove, the bottom ends of the top block 6 and the clamping columns 7 are connected with the lower template 33 through third springs 8, and the stiffness coefficient of the third springs 8 is smaller than that of the second springs 5; as shown in fig. 1, a guide post 311 is disposed at a top end of the lower die holder 31, the top end of the guide post 311 penetrates through the upper die holder 11 to be fixedly connected with the stop collar 9, a first spring 10 is sleeved on the guide post 311, and the first spring 10 is located between the upper die holder 11 and the lower die holder 31.
The embodiment also discloses a hole flanging process capable of inhibiting cracking, which comprises the following steps:
the method comprises the following steps: feeding, namely feeding the steel strip 100 to be subjected to hole flanging through a feeding machine (not shown), as shown in fig. 1, enabling the steel strip 100 to enter between a material pressing plate 22 and a lower template 33 in the die, enabling the steel strip 100 to be positioned at the upper part of a top block 6, enabling two side edges of the steel strip 100 to be clamped in clamping grooves 71, and thus carrying out floating feeding on the steel strip 100;
step two: pre-punching a bottom hole, closing the die, and enabling a first punch 131 in the upper die 1 to downwards penetrate through the first concave die 221 and the steel strip 100 and enter a fifth concave die 331, so that the bottom hole is pre-punched on the steel strip 100;
step three: reversely repairing the fault, opening the die, continuously conveying the steel strip 100 forwards through the feeder, conveying the bottom hole to the upper part of a fourth punch 332 in the lower die 3, closing the die again at the moment, and enabling the fourth punch 332 to upwards penetrate through the bottom hole to enter a second female die 222 so as to reversely repair the fault of the bottom hole;
step four: repairing the bottom hole for the second time, opening the die, continuously conveying the steel strip 100 forwards through the feeder, conveying the bottom hole with the fault repaired to the lower part of the second punch 132, closing the die again at the moment, enabling the second punch 132 to downwards penetrate through the third concave die 223 and the bottom hole to enter the sixth concave die 333, and repairing the burr and the fault of the bottom hole again;
step five: and (3) hole flanging, mold opening, continuously conveying the steel strip 100 forwards through the feeder, conveying the repaired bottom hole to the lower part of the third punch 133, closing the mold again at the moment, and enabling the third punch 133 to downwards penetrate through the fourth concave mold 224 and the bottom hole to enter the seventh concave mold 334 to complete hole flanging.
The process of die assembly is as follows: when the die is closed, the upper die 1 and the pressing mechanism 2 firstly descend together until the pressing plate 22 in the pressing mechanism 2 contacts the steel strip 100, then the upper die 1 continues to descend, because the stiffness coefficient of the third spring 8 is smaller than that of the second spring 5, the third spring 8 is firstly compressed, so that the top block 6 and the clamping column 7 are respectively pressed into the first mounting groove 335 and the second mounting groove 336, so that the lower die plate 33, the steel strip 100 and the pressing plate 22 are tightly attached, the upper part of the clamping column 7 enters the avoiding groove 225 at the bottom end of the pressing plate 22, at the moment, the fourth punch 332 passes through the through hole 61 in the top block 6 to enter the second concave die 222, then the upper die 1 continues to descend, the second spring 5 starts to be compressed, so that the upper die plate 13 in the upper die 1 gradually descends to contact the second concave die plate 21 in the pressing mechanism 2, and the first punch 131 passes through the first concave die 221 to enter the fifth concave die 331, the second punch 132 penetrates out of the third die 223 into the sixth die 333, and the third punch 133 penetrates out of the fourth die 224 into the seventh die 334.
The hole flanging die and the hole flanging process disclosed by the invention and the existing hole flanging process are used for respectively machining three times, one thousand holes are machined each time, then the hole flanging is observed, the number of hole flanging cracks is counted, and the results are recorded in the following table.
TABLE 1 statistics of the number of cracks in one thousand holes
According to the data in the table, through the existing hole flanging process, more than ninety percent of the machined one thousand holes can be cracked, and through the hole flanging process disclosed in the embodiment 1 of the invention, the number of the hole flanging cracks in the machined one thousand holes is less than ten, so that the hole flanging cracking can be effectively inhibited when the hole flanging process disclosed by the invention is used for hole flanging, and the quality of parts is improved.
Claims (6)
1. A hole flanging die capable of inhibiting cracking is characterized by comprising an upper die, a material pressing mechanism and a lower die, wherein the material pressing mechanism is positioned between the upper die and the lower die, and the lower die is positioned at the lower part of the upper die;
the upper die comprises an upper die base, a first base plate and an upper die plate, the first base plate is fixedly mounted at the bottom end of the upper die base, the upper die plate is fixedly mounted at the bottom end of the first base plate, and a first punch, a second punch and a third punch are sequentially arranged at the bottom end of the upper die plate from left to right;
the material pressing mechanism is slidably mounted at the bottom end of the upper die up and down, the material pressing mechanism comprises a second base plate and a material pressing plate, the second base plate is positioned at the lower part of the upper die plate, the material pressing plate is fixedly mounted at the bottom end of the second base plate, a first concave die, a second concave die, a third concave die, a fourth concave die and an avoiding groove are sequentially arranged on the material pressing plate from left to right, the first concave die is arranged corresponding to the position of the first punch, the first punch downwards penetrates through the second base plate to penetrate into the first concave die, the first punch can continuously downwards penetrate out of the first concave die, the third concave die is arranged corresponding to the position of the second punch, the second punch downwards penetrates through the second base plate to penetrate into the third concave die, the second punch can continuously downwards penetrate out of the third concave die, and the fourth concave die is arranged corresponding to the position of the third punch, the third punch penetrates through the second base plate downwards and penetrates into the fourth concave die, and the third punch can continuously penetrate out of the fourth concave die downwards;
the lower die comprises a lower die base, a third base plate and a lower die plate, the third base plate is fixedly mounted at the top end of the lower die base, the lower die plate is fixedly mounted at the top end of the third base plate, the lower die plate is positioned at the lower part of the pressure plate, a fifth female die, a fourth punch, a sixth female die and a seventh female die are sequentially arranged at the top end of the lower die plate from left to right, the fifth female die is opposite to the first female die in position, the fourth punch is opposite to the second female die in position, the top end of the lower die plate is also provided with a top block in a floating manner, a through hole is formed in the middle of the top block, the top end of the fourth punch is positioned in the through hole, the sixth female die is opposite to the third female die in position, the seventh female die is opposite to the fourth female die in position, and a clamping column is also arranged at the top end of the lower die plate in a floating manner, the clamp column and the avoidance groove are correspondingly arranged, the clamp groove is formed in the side wall of the clamp column, the guide column is arranged at the top end of the lower die base, the top end of the guide column penetrates through the upper die base to be fixedly connected with the limiting sleeve, the guide column is sleeved with a first spring, and the first spring is located between the upper die base and the lower die base.
2. The hole flanging die capable of inhibiting cracking as claimed in claim 1, wherein sliding grooves are vertically formed in the left end and the right end of the top of the upper die plate respectively, a limiting plate is arranged in each sliding groove, a jacking column is arranged at the top end of the second base plate, the top end of each jacking column penetrates through the upper die plate and is fixedly connected with the limiting plate, and a second spring is arranged between the top end of each limiting plate and the bottom end of the first base plate.
3. The hole flanging die capable of inhibiting cracking as claimed in claim 2, wherein a first mounting groove and a second mounting groove are formed at the top end of the lower die plate, the bottoms of the top block and the clamping column are respectively located in the first mounting groove and the second mounting groove, the bottom end of the top block and the bottom end of the clamping column are both connected with the lower die plate through a third spring, and the stiffness coefficient of the third spring is smaller than that of the second spring.
4. The hole flanging die capable of inhibiting cracking as claimed in claim 1, wherein the number of said avoiding grooves and said clamping posts is two, two said avoiding grooves are provided at the front and rear ends of the bottom of said pressure plate, two said clamping posts are correspondingly provided at the front and rear ends of the top of said lower die plate, and said clamping grooves are correspondingly provided on the opposite side walls of two said clamping posts.
5. The hole flanging die capable of inhibiting cracking as claimed in claim 1, wherein a rubber pad is arranged in said clamping groove.
6. A hole flanging process capable of inhibiting cracking by using the hole flanging die capable of inhibiting cracking according to any one of claims 1 to 5, which comprises the following steps:
the method comprises the following steps: feeding, namely feeding a steel belt to be subjected to hole flanging through a feeder, enabling the steel belt to enter a position between a material pressing plate and a lower template in a die, enabling the steel belt to be positioned at the upper part of a top block, and enabling the side edge of the steel belt to be clamped in a clamping groove;
step two: pre-punching a bottom hole, closing the die, and enabling a first punch in an upper die to downwards penetrate through a first female die and the steel strip to enter a fifth female die, so that the bottom hole is pre-punched on the steel strip;
step three: reversely repairing the fault, opening the die, continuously conveying the steel belt forwards through the feeder, conveying the bottom hole to the upper part of a fourth punch head in the lower die, closing the die again at the moment, and enabling the fourth punch head to upwards penetrate through the bottom hole to enter a second concave die so as to reversely repair the fault of the bottom hole;
step four: repairing the bottom hole for the second time, opening the die, continuously conveying the steel belt forwards through the feeder, conveying the repaired bottom hole to the lower part of a second punch, closing the die again at the moment, enabling the second punch to downwards penetrate through a third female die and the bottom hole to enter a sixth female die, and repairing burrs and faults of the bottom hole again;
step five: and hole flanging, opening the die, continuously conveying the steel strip forward through the feeder, conveying the repaired bottom hole to the lower part of a third punch, closing the die again at the moment, and enabling the third punch to downwards penetrate through a fourth female die and the bottom hole to enter a seventh female die to complete hole flanging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010409328.4A CN111531004B (en) | 2020-05-14 | 2020-05-14 | Hole flanging die capable of inhibiting cracking and hole flanging process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010409328.4A CN111531004B (en) | 2020-05-14 | 2020-05-14 | Hole flanging die capable of inhibiting cracking and hole flanging process |
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| Publication Number | Publication Date |
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| CN111531004A CN111531004A (en) | 2020-08-14 |
| CN111531004B true CN111531004B (en) | 2022-03-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120102847A (en) * | 2011-03-09 | 2012-09-19 | 주식회사 케이이 | Burring process and the system of vehicle panel iron plate |
| CN203711582U (en) * | 2013-12-11 | 2014-07-16 | 杭州顺峰链业有限公司 | Blanking and hole finishing device for machining pin hole in chain sheet |
| CN205463928U (en) * | 2016-03-03 | 2016-08-17 | 武汉日晗精密机械有限公司 | Prevent mould of high hole flanging fracture |
| CN109201932A (en) * | 2018-09-12 | 2019-01-15 | 上海申驰实业有限公司 | A kind of auto parts and components hole flanging method |
| CN110788209A (en) * | 2019-11-12 | 2020-02-14 | 延锋安道拓座椅有限公司 | Method for inhibiting flanging hole from cracking |
-
2020
- 2020-05-14 CN CN202010409328.4A patent/CN111531004B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120102847A (en) * | 2011-03-09 | 2012-09-19 | 주식회사 케이이 | Burring process and the system of vehicle panel iron plate |
| CN203711582U (en) * | 2013-12-11 | 2014-07-16 | 杭州顺峰链业有限公司 | Blanking and hole finishing device for machining pin hole in chain sheet |
| CN205463928U (en) * | 2016-03-03 | 2016-08-17 | 武汉日晗精密机械有限公司 | Prevent mould of high hole flanging fracture |
| CN109201932A (en) * | 2018-09-12 | 2019-01-15 | 上海申驰实业有限公司 | A kind of auto parts and components hole flanging method |
| CN110788209A (en) * | 2019-11-12 | 2020-02-14 | 延锋安道拓座椅有限公司 | Method for inhibiting flanging hole from cracking |
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| Publication number | Publication date |
|---|---|
| CN111531004A (en) | 2020-08-14 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A kind of hole turning die and hole turning process that can inhibit cracking Effective date of registration: 20221117 Granted publication date: 20220322 Pledgee: Industrial and Commercial Bank of China Limited Wenzhou Ouhai sub branch Pledgor: ZHEJIANG LORCA PRECISION INDUSTRY Co.,Ltd. Registration number: Y2022330003122 |