CN211437744U - Hole flanging drift to thick material - Google Patents
Hole flanging drift to thick material Download PDFInfo
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- CN211437744U CN211437744U CN201921037398.0U CN201921037398U CN211437744U CN 211437744 U CN211437744 U CN 211437744U CN 201921037398 U CN201921037398 U CN 201921037398U CN 211437744 U CN211437744 U CN 211437744U
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- punch
- hole flanging
- flanging
- outer diameter
- hole
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Abstract
The utility model discloses a hole flanging punch for thick materials, which comprises a punch column, a first punch, a second punch and a third punch; aiming at the situation that the side wall of the hole flanging inclines due to the unreasonable structure of the hole flanging punch and the inner diameter of the hole flanging is difficult to ensure, the technical scheme improves the structure of the hole flanging punch. A pre-flanging structure is added on the end face of the flanging punch, so that the side wall is prevented from inclining after hole flanging, and the inner diameter of the flanging hole is guaranteed to be qualified. Through verification in actual production, the problem that the side wall of the hole flanging inclines is well solved by the improved hole flanging punch, and the inner diameter of the hole flanging also meets the requirement of a drawing.
Description
Technical Field
The utility model belongs to the technical field of machining, concretely relates to hole flanging drift to thick material.
Background
In the process of designing the die, hole flanging parts with thicker materials are often encountered, and the inner diameter of the hole flanging is stricter. But the inner diameter of the hole flanging is difficult to ensure because the hole flanging punch head is unreasonable in structure and causes the hole flanging side wall to incline. The requirement of drawing tolerance cannot be met, and the inclination of the side wall of the flanging hole can also hinder the butt joint of the flanging hole and other parts after the forming.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a hole flanging drift to thick material.
The utility model discloses a realize through following technical scheme:
a hole flanging punch for thick materials comprises a punch column, a first punch, a second punch and a third punch;
the lower end of the punch column is provided with a first punch with the outer diameter smaller than that of the punch column, the lower end of the first punch is provided with a second punch with the outer diameter smaller than that of the first punch, and the lower end of the second punch is provided with a third punch with the outer diameter smaller than that of the second punch; the first punch, the second punch and the third punch are arranged in a step shape, and the first punch, the second punch and the third punch are in gradually changed arc shapes.
In the technical scheme, the lower end surface of the third punch is horizontal.
In the above technical solution, the edges of the first punch, the second punch and the third punch are formed with chamfers.
In the technical scheme, the chamfer angle of the first punch, the second punch and the third punch is 10-20 degrees.
In the technical scheme, the outer diameter of the punch column is 20-30 mm; the outer diameter of the first punch is 15-20 mm; the outer diameter of the second punch is 10-15 mm; the outer diameter of the third punch is 8-10 mm.
In the technical scheme, the outer diameter of the punch column is preferably 25 mm; the outer diameter of the first punch is preferably 20 mm; the outer diameter of the second punch is preferably 13 mm; the outer diameter of the third punch was 9 mm.
When the hole flanging punch is used, the hole flanging punch for the thick materials is opposite to a preset hole, and a first hole flanging side wall is machined through a third punch with the smallest diameter at the lower end; then, continuously pushing the punch downwards, and continuously expanding the hole flanging by adopting a second punch with a slightly larger diameter to form a second hole flanging side wall with a larger diameter; then continuously pushing and pressing the punch downwards, and continuously expanding the hole flanging by adopting the first punch with the largest diameter to form a hole flanging side wall which finally meets the standard size and perpendicularity requirements; the whole process is pushed and pressed by three steps, the corresponding position of the punch and the hole flanging position is easier to grasp, and the stress of the hole flanging side wall in the pushing and pressing process is more uniform, so that the verticality of the hole flanging side wall is better, and the problem of hole flanging side wall inclination is solved.
The utility model discloses an advantage and beneficial effect do:
aiming at the situation that the side wall of the hole flanging inclines due to the unreasonable structure of the hole flanging punch and the inner diameter of the hole flanging is difficult to ensure, the technical scheme improves the structure of the hole flanging punch. A pre-flanging structure is added on the end face of the flanging punch, so that the side wall is prevented from inclining after hole flanging, and the inner diameter of the flanging hole is guaranteed to be qualified. Through verification in actual production, the problem that the side wall of the hole flanging inclines is well solved by the improved hole flanging punch, and the inner diameter of the hole flanging also meets the requirement of a drawing.
Drawings
Fig. 1 is a schematic diagram of a hole flanging structure.
Fig. 2 is a schematic view of an unmodified punch construction.
Fig. 3 is a schematic structural view of a hole flanging punch for thick materials according to the present invention.
Wherein: the punching die comprises a base plate 1, a hole flanging side wall 2, a hole flanging 3, a punch pin 4, a first punch 5, a second punch 6 and a third punch 7.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical field person understand the solution of the present invention better, the technical solution of the present invention is further described below with reference to the specific embodiments.
Example 1
A hole flanging punch for thick materials comprises a punch column, a first punch, a second punch and a third punch;
the lower end of the punch column is provided with a first punch with the outer diameter smaller than that of the punch column, the lower end of the first punch is provided with a second punch with the outer diameter smaller than that of the first punch, and the lower end of the second punch is provided with a third punch with the outer diameter smaller than that of the second punch; the first punch, the second punch and the third punch are arranged in a step shape, and the first punch, the second punch and the third punch are in gradually changed arc shapes. The lower end surface of the third punch is horizontal. The edges of the first punch, the second punch and the third punch are provided with chamfers; the angle of the chamfer is 10 degrees. The outer diameter of the punch post is 20 mm; the outer diameter of the first punch is 15 mm; the outer diameter of the second punch is 10 mm; the outer diameter of the third punch is 8 mm.
Example 2
A hole flanging punch for thick materials comprises a punch column, a first punch, a second punch and a third punch;
the lower end of the punch column is provided with a first punch with the outer diameter smaller than that of the punch column, the lower end of the first punch is provided with a second punch with the outer diameter smaller than that of the first punch, and the lower end of the second punch is provided with a third punch with the outer diameter smaller than that of the second punch; the first punch, the second punch and the third punch are arranged in a step shape, and the first punch, the second punch and the third punch are in gradually changed arc shapes. The lower end surface of the third punch is horizontal. The edges of the first punch, the second punch and the third punch are provided with chamfers; the angle of the chamfer is 15 degrees. The outer diameter of the punch post is 25 mm; the outer diameter of the first punch is 18 mm; the outer diameter of the second punch is 13 mm; the outer diameter of the third punch was 9 mm.
Example 3
A hole flanging punch for thick materials comprises a punch column, a first punch, a second punch and a third punch;
the lower end of the punch column is provided with a first punch with the outer diameter smaller than that of the punch column, the lower end of the first punch is provided with a second punch with the outer diameter smaller than that of the first punch, and the lower end of the second punch is provided with a third punch with the outer diameter smaller than that of the second punch; the first punch, the second punch and the third punch are arranged in a step shape, and the first punch, the second punch and the third punch are in gradually changed arc shapes. The lower end surface of the third punch is horizontal. The edges of the first punch, the second punch and the third punch are provided with chamfers; the angle of the chamfer is 20 degrees. The outer diameter of the punch post is 30 mm; the outer diameter of the first punch is 20 mm; the outer diameter of the second punch is 15 mm; the outer diameter of the third punch was 10 mm.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The invention has been described above by way of example, and it should be noted that any simple variants, modifications or other equivalent substitutions by a person skilled in the art without spending creative effort may fall within the scope of protection of the present invention without departing from the core of the present invention.
Claims (6)
1. The utility model provides a hole flanging drift to thick material which characterized in that: the punching head comprises a punching head column, a first punching head, a second punching head and a third punching head;
the lower end of the punch column is provided with a first punch with the outer diameter smaller than that of the punch column, the lower end of the first punch is provided with a second punch with the outer diameter smaller than that of the first punch, and the lower end of the second punch is provided with a third punch with the outer diameter smaller than that of the second punch; the first punch, the second punch and the third punch are arranged in a step shape;
the edges of the first punch, the second punch and the third punch are provided with chamfers, and the chamfer angle of the first punch is 10-20 degrees; the chamfering angle of the second punch is 10-20 degrees; the chamfering angle of the third punch is 10-20 degrees.
2. A flanging punch for thick materials according to claim 1, characterized in that: the lower end surface of the third punch is horizontal.
3. A flanging punch for thick materials according to claim 1, characterized in that: the outer diameter of the punch column is 20-30 mm.
4. A flanging punch for thick materials according to claim 1, characterized in that: the outer diameter of the first punch is 15-20 mm.
5. A flanging punch for thick materials according to claim 1, characterized in that: the outer diameter of the second punch is 10-15 mm.
6. A flanging punch for thick materials according to claim 1, characterized in that: the outer diameter of the third punch is 8-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921037398.0U CN211437744U (en) | 2019-07-03 | 2019-07-03 | Hole flanging drift to thick material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921037398.0U CN211437744U (en) | 2019-07-03 | 2019-07-03 | Hole flanging drift to thick material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211437744U true CN211437744U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921037398.0U Active CN211437744U (en) | 2019-07-03 | 2019-07-03 | Hole flanging drift to thick material |
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| CN (1) | CN211437744U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290196A (en) * | 2021-04-16 | 2021-08-24 | 江铃汽车股份有限公司 | Punching and riveting device and punching and riveting process |
-
2019
- 2019-07-03 CN CN201921037398.0U patent/CN211437744U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290196A (en) * | 2021-04-16 | 2021-08-24 | 江铃汽车股份有限公司 | Punching and riveting device and punching and riveting process |
| CN113290196B (en) * | 2021-04-16 | 2022-07-08 | 江铃汽车股份有限公司 | Punching and riveting device and punching and riveting process |
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