CN216461055U - Hole flanging punch of automobile part stamping die - Google Patents
Hole flanging punch of automobile part stamping die Download PDFInfo
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- CN216461055U CN216461055U CN202122689894.8U CN202122689894U CN216461055U CN 216461055 U CN216461055 U CN 216461055U CN 202122689894 U CN202122689894 U CN 202122689894U CN 216461055 U CN216461055 U CN 216461055U
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- hole flanging
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- stamping die
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Abstract
The utility model relates to a hole flanging punch of an automobile part stamping die, which comprises a punch seat, wherein the bottom of the punch seat is fixedly clamped with a punch, and an elastic piece is sleeved on the punch seat above the joint of the punch seat and the punch; the punch is sequentially provided with a working part, a positioning part and a guide part from top to bottom, the working part is in transitional connection with the positioning part through a concave arc-shaped structure I, and the positioning part is in transitional connection with the guide part through a concave arc-shaped structure II; the elastic piece extends downwards to the working part of the punch along the axial direction; in the hole flanging process, a guide part and a positioning part of a punch are sequentially contacted and matched with a pre-punched hole on a material sheet to complete guide and positioning, then a working part acts and applies force to the pre-punched hole to downwards overturn the pre-punched hole, hole flanging is realized, and an elastic part is compressed in the process; from the moment the punch is ready to retract, the elastic element applies a downward force to the material sheet, and a discharging force is applied to the material sheet at a first time; the hole flanging punch effectively ensures the hole flanging quality and is convenient for replacing the punch part.
Description
Technical Field
The utility model relates to the technical field of punching, in particular to a hole flanging punch of an automobile part punching die.
Background
In automotive parts, hole flanging is a common process. The requirements are different according to different hole flanging effects. Tapping in holes after some holes are turned, which is called as sprouting, the holes have the requirements of inner diameter size and height size, the inner diameter size determines how large teeth are tapped, and the height size determines a plurality of effective teeth; some hole flanging devices are matched with other parts, and the requirements of height, coaxiality, matching size, hole flanging straight arm size, hole flanging wall thickness and the like exist.
In the prior art, the corresponding structural design is usually carried out according to the hole flanging size requirement; when the hole flanging has the height requirement and the wall thickness requirement, the existing secondary punch often cannot meet the product requirement, the phenomena of different hole flanging heights and uneven wall thicknesses are easily caused, the situation that one side of the same hole flanging is high and the other side is low is sometimes caused, the hole flanging sizes are inconsistent, and the overall quality is poor.
SUMMERY OF THE UTILITY MODEL
The hole flanging punch is reasonable in structure, so that hole flanging quality is effectively improved and guaranteed, hole flanging size and concentricity consistency are good, and the assembled punch is convenient to replace and maintain.
The technical scheme adopted by the utility model is as follows:
a hole flanging punch of an automobile part stamping die comprises a punch seat, wherein a punch is fixedly clamped at the bottom of the punch seat, and an elastic piece is sleeved on the punch seat above the joint of the punch and the punch; the punch is sequentially provided with a working part, a positioning part and a guide part from top to bottom, the working part is in transitional connection with the positioning part through a concave arc-shaped structure I, and the positioning part is in transitional connection with the guide part through a concave arc-shaped structure II; the elastic piece extends downwards along the axial direction to the working part of the punch.
As a further improvement of the above technical solution:
the lower end of the punch seat is inwards recessed along the circumferential direction to form a step, the end part of the bottom end of the punch seat is provided with a clamping groove, the circumferential surface of the step is provided with a through hole along the diameter direction, the through hole penetrates through the clamping groove, and a shaft pin is arranged in the through hole; the top of the punch is extended outwards to form a clamping portion, the clamping portion is clamped into the clamping groove, and the shaft pin penetrates through the clamping portion and the step which are mutually clamped.
The shaft pin and the through hole are in interference hard connection or threaded connection.
A notch is arranged on the circumferential surface of the step at the opening of the end part of the through hole, and the end part of the shaft pin is accommodated in the notch.
The elastic piece is sleeved on the step in the circumferential direction; the end parts of the two ends of the shaft pin are attached to the inner wall surface of the elastic piece, and the axial direction of the shaft pin is limited by the elastic piece.
The bottom edge of the punch seat is provided with a third concave arc-shaped structure, and the diameter of the lower edge of the third concave arc-shaped structure is consistent with that of the working part of the punch.
The bottom end of the elastic piece extends downwards and protrudes out of the lower edge of the working part; the outer circumference diameter of the elastic piece is smaller than that of the punch holder.
The diameter of the working part is larger than that of the positioning part, and the diameter of the positioning part is larger than that of the guide part; the lower edge and the bottom surface of the guide part are in arc transition, or the bottom surface of the guide part is in a spherical structure.
The diameter of the guide part is 0.5mm smaller than that of a pre-punched hole on a material sheet; the diameter of the positioning part is 0.05mm smaller than that of the pre-punched hole on the material sheet; the diameter of the working part is consistent with the diameter of the flanging hole.
The top of the punch head seat extends outwards to form a press-mounting part, and the diameter of the press-mounting part is larger than that of the punch head seat; the punch seat is clamped on the external mounting plate through the press mounting part.
The utility model has the following beneficial effects:
the punching machine is compact and reasonable in structure and convenient to operate, in the hole flanging process, the guide part and the positioning part of the punch are sequentially contacted and matched with the pre-punched holes on the material sheet to complete guide and positioning, then the working part acts and applies force to the pre-punched holes to downwards overturn the pre-punched holes to realize hole flanging, and at the moment, the elastic part is compressed; from the beginning of the preparation retraction of the punch, the elastic part applies downward force to the material sheet, and applies a discharging force opposite to the retraction direction of the punch to the material sheet at the first time so as to assist the material sheet to be separated from the punch in time; according to the utility model, through the resilience force application of the punch and the elastic piece with the three-level structure, the correctness and consistency of the hole flanging size are effectively improved, and the hole flanging quality is ensured;
the utility model also comprises the following advantages:
the punch seat and the punch of the assembly structure enable the punch to be convenient to replace when worn or damaged;
the lower end of the elastic part protrudes downwards from the working part of the punch, namely the downward length of the elastic part is longer than that of the working part, so that the effect and timeliness of the discharging force applied to the charging sheet by the compression of the elastic part are ensured;
the two ends of the shaft pin are contained between the inner walls of the elastic pieces, and when the elastic pieces are sleeved at the steps of the punch seat, the shaft pin is effectively axially limited.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view (sectional view) of the connection part of the punch holder and the punch according to the present invention.
Fig. 3 is an exploded view of fig. 2.
Wherein: 1. a punch; 2. an elastic member; 3. a punch holder; 4. a shaft pin; 11. a working part; 12. a positioning part; 13. a guide portion; 14. a clamping part; 15. an arc structure I; 16. an arc-shaped structure II; 31. a press-fitting section; 32. a step; 33. a recess; 34. a through hole; 35. a card slot; 36. and a third arc structure.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and 2, the hole flanging punch of the automobile part stamping die of the embodiment includes a punch seat 3, a punch 1 is fixedly clamped at the bottom of the punch seat 3, and an elastic member 2 is sleeved on the punch seat 3 above the joint of the punch 1; the punch 1 is sequentially provided with a working part 11, a positioning part 12 and a guide part 13 from top to bottom, the working part 11 is in transitional connection with the positioning part 12 through a concave arc-shaped structure I15, and the positioning part 12 is in transitional connection with the guide part 13 through a concave arc-shaped structure II 16; the resilient member 2 extends axially downwardly to the working portion 11 of the punch 1.
As shown in fig. 3, the lower end of the punch holder 3 is inwardly recessed along the circumference to form a step 32, the end of the bottom end of the punch holder 3 is provided with a clamping groove 35, the circumferential surface of the step 32 is provided with a through hole 34 along the diameter direction, the through hole 34 penetrates through the clamping groove 35, and the shaft pin 4 is installed in the through hole 34; the top of the punch 1 extends outwards to form a clamping part 14, the clamping part 14 is clamped into the clamping groove 35, and the shaft pin 4 penetrates through the clamping part 14 and the step 32 which are mutually clamped.
The shaft pin 4 is in interference hard connection with the through hole 34 or in threaded connection.
A recess 33 is formed on the circumferential surface of the step 32 at the end opening of the through hole 34, and the end of the shaft pin 4 is received in the recess 33.
The punch holder 3 and punch 1 of the structure are assembled so that the punch 1 can be replaced when worn or damaged.
The elastic member 2 is fitted over the step 32 in the circumferential direction; the end parts of the two ends of the shaft pin 4 are attached to the inner wall surface of the elastic piece 2, and the axial direction of the shaft pin 4 is limited by the elastic piece 2.
The edge of the bottom surface of the punch head seat 3 is provided with a third concave arc structure 36, and the diameter of the lower edge of the third concave arc structure 36 is consistent with that of the working part 11 of the punch head 1; the shape of the arc-shaped structure III 36 is matched with that of the hole opening of the hole flanging.
The bottom end of the elastic element 2 extends downwards and protrudes out of the lower edge of the working part 11; the outer circumferential diameter of the elastic member 2 is smaller than the outer circumferential diameter of the punch holder 3.
The lower end of the elastic part 2 protrudes downwards from the working part 11 of the punch 1, namely the downward length of the elastic part 2 is longer than that of the working part 11, so that the effect and timeliness of the discharging force applied to the material sheet by the elastic part 2 due to compression are ensured.
The diameter of the working part 11 is larger than that of the positioning part 12, and the working part and the positioning part are connected through an arc-shaped structure I15; the diameter of the positioning part 12 is larger than that of the guide part 13, and the positioning part and the guide part are connected through a second arc-shaped structure 16; the lower edge of the guide part 13 and the bottom surface are in arc transition, or the bottom surface of the guide part 13 is in a spherical structure.
The working part 11 is connected with the positioning part 12 through the first arc-shaped structure 15, and the positioning part 12 is connected with the guide part 13 through the second arc-shaped structure 16, so that the processes of guiding, positioning and hole flanging are smoothly completed between the punch 1 and the sheet pre-punched hole in the hole flanging process; the arc transition or spherical structure of the bottom surface of the guide part 13 helps the guide part 13 to smoothly contact and effectively penetrate into the tablet pre-punching hole.
The diameter of the guide part 13 is 0.5mm smaller than that of the pre-punched hole on the material sheet; the diameter of the positioning part 12 is 0.05mm smaller than that of the pre-punched hole on the material sheet; the diameter of the working part 11 is consistent with the diameter of the hole flanging.
The top of the punch holder 3 extends outwards to form a press-fitting part 31, and the diameter of the press-fitting part 31 is larger than that of the punch holder 3; the punch holder 3 is clamped to the external mounting plate by a press-fitting portion 31.
In the hole flanging process, the guide part 13 and the positioning part 12 of the punch 1 are sequentially contacted and matched with the pre-punched holes on the material sheet to complete guide and positioning, then the working part 11 acts and applies force to the pre-punched holes to enable the pre-punched holes to be turned out downwards, hole flanging is realized, and at the moment, the elastic part 2 is compressed; from the moment when the punch 1 is ready to retract, the elastic element 2 applies a downward force to the material sheet, and at a first time, a discharge force is applied to the material sheet opposite to the retraction direction of the punch 1, so as to assist in timely disengagement of the material sheet from the punch 1.
The hole flanging device is simple to install and convenient to use, effectively improves the hole flanging quality, ensures the quality consistency and is good in practicability.
The above description is intended to illustrate the utility model and not to limit the utility model, which is defined by the scope of the claims and can be modified in any manner within the scope of the utility model.
Claims (10)
1. The utility model provides an auto parts stamping die hole flanging drift which characterized in that: the punching head comprises a punching head seat (3), a punching head (1) is fixedly clamped at the bottom of the punching head seat (3), and an elastic piece (2) is sleeved on the punching head seat (3) above the joint of the punching head (1); the punch (1) is sequentially provided with a working part (11), a positioning part (12) and a guide part (13) from top to bottom, the working part (11) and the positioning part (12) are in transitional connection through a concave arc structure I (15), and the positioning part (12) and the guide part (13) are in transitional connection through a concave arc structure II (16); the elastic piece (2) extends downwards along the axial direction to the working part (11) of the punch (1).
2. The automotive part stamping die hole flanging punch of claim 1, wherein: the lower end of the punch holder (3) is inwards recessed along the circumferential direction to form a step (32), the end part of the bottom end of the punch holder (3) is provided with a clamping groove (35), the circumferential surface of the step (32) is provided with a through hole (34) along the diameter direction, the through hole (34) penetrates through the clamping groove (35), and a shaft pin (4) is arranged in the through hole (34); the top of the punch (1) extends outwards to form a clamping portion (14), the clamping portion (14) is clamped into the clamping groove (35), and the shaft pin (4) penetrates through the clamping portion (14) and the step (32) which are clamped mutually.
3. The automotive part stamping die hole flanging punch of claim 2, wherein: the shaft pin (4) and the through hole (34) are in interference hard connection or in threaded connection.
4. The automotive part stamping die hole flanging punch of claim 2, wherein: a notch (33) is formed on the circumferential surface of the step (32) positioned at the opening of the end part of the through hole (34), and the end part of the shaft pin (4) is accommodated in the notch (33).
5. The automotive part stamping die hole flanging punch of claim 2, wherein: the elastic piece (2) is sleeved on the step (32) in the circumferential direction; the end parts of the two ends of the shaft pin (4) are attached to the inner wall surface of the elastic piece (2), and the axial direction of the shaft pin (4) is limited by the elastic piece (2).
6. The automotive part stamping die hole flanging punch of claim 1, wherein: the edge of the bottom surface of the punch head seat (3) is provided with a third concave arc-shaped structure (36), and the diameter of the lower edge of the third concave arc-shaped structure (36) is consistent with that of the working part (11) of the punch head (1).
7. The automotive part stamping die hole flanging punch of claim 1, wherein: the bottom end of the elastic piece (2) extends downwards and protrudes out of the lower edge of the working part (11); the diameter of the outer circumference of the elastic piece (2) is smaller than that of the outer circumference of the punch holder (3).
8. The automotive part stamping die hole flanging punch of claim 1, wherein: the diameter of the working part (11) is larger than that of the positioning part (12), and the diameter of the positioning part (12) is larger than that of the guide part (13); the lower edge of the guide part (13) and the bottom surface of the guide part are in arc transition, or the bottom surface of the guide part (13) is in a spherical structure.
9. The automotive part stamping die hole flanging punch of claim 1, wherein: the diameter of the guide part (13) is 0.5mm smaller than that of a pre-punched hole on a material sheet; the diameter of the positioning part (12) is 0.05mm smaller than that of a pre-punched hole on a material sheet; the diameter of the working part (11) is consistent with the diameter of the flanging hole.
10. The automotive part stamping die hole flanging punch of claim 1, wherein: the top of the punch head seat (3) extends outwards to form a pressing part (31), and the diameter of the pressing part (31) is larger than that of the punch head seat (3); the punch holder (3) is clamped on an external mounting plate through a press mounting part (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122689894.8U CN216461055U (en) | 2021-11-04 | 2021-11-04 | Hole flanging punch of automobile part stamping die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122689894.8U CN216461055U (en) | 2021-11-04 | 2021-11-04 | Hole flanging punch of automobile part stamping die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216461055U true CN216461055U (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122689894.8U Active CN216461055U (en) | 2021-11-04 | 2021-11-04 | Hole flanging punch of automobile part stamping die |
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| Country | Link |
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| CN (1) | CN216461055U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116475307A (en) * | 2023-04-23 | 2023-07-25 | 宝玛克(合肥)科技有限公司 | Online hole flanging die for rolling part and application method of online hole flanging die |
-
2021
- 2021-11-04 CN CN202122689894.8U patent/CN216461055U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116475307A (en) * | 2023-04-23 | 2023-07-25 | 宝玛克(合肥)科技有限公司 | Online hole flanging die for rolling part and application method of online hole flanging die |
| CN116475307B (en) * | 2023-04-23 | 2024-03-19 | 宝玛克(合肥)科技有限公司 | Online hole flanging die for rolling part and application method of online hole flanging die |
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