CN213763886U - Self-piercing riveting female die - Google Patents
Self-piercing riveting female die Download PDFInfo
- Publication number
- CN213763886U CN213763886U CN202022251976.XU CN202022251976U CN213763886U CN 213763886 U CN213763886 U CN 213763886U CN 202022251976 U CN202022251976 U CN 202022251976U CN 213763886 U CN213763886 U CN 213763886U
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- floating ring
- ring
- die
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- self
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Abstract
The utility model discloses a from dashing riveted die, which comprises a body, the body is equipped with circular sunken die cavity, the middle part of circular sunken die cavity is equipped with the boss, the body centers on the boss is equipped with the ring channel, be equipped with the floating ring in the ring channel, the floating ring by restricted in reciprocate in the ring channel, the ascending elasticity that receives when the floating ring moves down increases along with the distance increase that moves down, the top surface of floating ring is in when the floating ring moves down to the bottom with the lateral wall of circular sunken die cavity reaches the lateral wall of boss constitutes smooth connection. The female die can reduce surface cracking of the riveting material and improve the riveting qualification rate.
Description
Technical Field
The utility model relates to a riveting die especially relates to a from dashing riveted die.
Background
The self-piercing riveting is a plate connection mode, is particularly suitable for plate connection of different materials, and therefore plays an important role in connection of vehicle body structural members. The self-piercing riveting process mainly comprises four stages of plate pressing, piercing, expanding and filling, and in the riveting process, the foot of the rivet can form a good connection effect with the plate after the upper plate is pierced and the lower plate is embedded into the lower plate, so that the required connection strength is achieved. Therefore, in the riveting process, the requirements on the stamping speed and the stamping force are high, the lower-layer plate has large plastic deformation, and the thin lower-layer plate is easy to generate surface cracks in the riveting process and is unqualified.
SUMMERY OF THE UTILITY MODEL
To the defect of above-mentioned prior art, the utility model provides a from dashing riveted die adjusts the punching press power of riveting in-process, reduces the surface crack problem of lower floor's panel.
The utility model discloses technical scheme as follows: the utility model provides a from dashing riveted die, includes the body, the body is equipped with circular sunken die cavity, the middle part of circular sunken die cavity is equipped with the boss, the body centers on the boss is equipped with the ring channel, be equipped with the floating ring in the ring channel, the floating ring be restricted in reciprocate in the ring channel, the upward elasticity that receives when the floating ring moves down increases and increases along with the distance that moves down, the top surface of floating ring is in when the floating ring moves down to the bottom with the lateral wall of circular sunken die cavity reaches the lateral wall of boss constitutes smooth connection.
Preferably, hydraulic oil is filled between the floating ring and the annular groove.
Preferably, a spring is connected between the floating ring and the groove bottom of the annular groove.
Preferably, the groove bottom of the annular groove is a movable block embedded into the body, the body is provided with an adjusting screw, the height of the movable block is adjusted by the adjusting screw, and the spring is connected with the movable block.
Preferably, the top surface of the floating ring is planar.
The utility model discloses a set up a floating ring, only possess less elasticity in the earlier stage of punching the rivet, consequently can adopt great punching press power to ensure that the rivet punctures upper panel fast, make the floating ring move down and elasticity increase this moment along with pushing down of material, delay the deformation rate of lower floor's material, lower floor's material constantly moves down the in-process at the floating ring and fills up circular sunken die cavity gradually, and the front end of rivet also accomplishes the locking riveting to the extension all around.
The utility model provides a technical scheme's advantage lies in: the deformation speed of the lower-layer plate is changed by utilizing the changed elastic supporting force, the problem of surface cracking of the lower-layer plate is reduced, and the riveting qualified rate is improved from 92% to more than 95%.
Drawings
FIG. 1 is a schematic view showing the structure of a self-piercing riveting die in example 1.
FIG. 2 is a schematic structural view of a self-piercing riveting die of example 2.
Detailed Description
The present invention is further described in connection with the following examples, which are intended to illustrate the invention and not to limit the scope of the invention, which, after reading the present invention, are intended to cover modifications of the invention in its various equivalent forms by those skilled in the art, which fall within the scope of the appended claims.
Embodiment 1, please refer to fig. 1, the self-piercing riveting die of the present embodiment includes a body 100, the body 100 is cylindrical, a circular concave cavity 101 is formed on the top surface of the body 100, a ring of pressing ring 102 is formed on the top surface of the body 100, and a support for a lower plate is formed during riveting. The middle part of the circular concave die cavity 101 is provided with a boss 103, the body 100 is provided with an annular groove 104 at the bottom 101 of the circular concave die cavity around the boss 103, a floating ring 105 is arranged in the annular groove 104, the annular groove 104 is provided with a necking, and a shoulder 105a is correspondingly arranged on the floating ring 105, so that the floating ring 105 cannot be separated when moving upwards in the annular groove 104. The bottom of the body 100 comprises a cover plate 100a, the cover plate 100a closes the bottom of the annular groove 104, a sealing ring 106 is arranged on the inner side and the outer side of the floating ring 105, after the floating ring 105 is embedded into the annular groove 104, a cavity is formed between the floating ring 104 and the cover plate 100a, and hydraulic oil is filled into the cavity to form certain pressure. The top surface of floating ring 104 is arranged as a flat surface, and when floating ring 104 is moved up to the limit position, the top surface of floating ring 104 is flush with the top point of boss 103. When the floating ring 104 moves down and then to the bottom, the top surface of the floating ring 104 can be smoothly connected with the side wall of the circular concave die cavity 101 and the side wall of the boss 103. In the riveting process, the floating ring 104 continuously moves downwards, hydraulic oil is compressed to form upward elastic force, and the elastic force formed by the larger the downward movement distance of the floating ring 104 is, the stronger the elastic force is.
In embodiment 2, in order to conveniently adjust the elastic force of the floating ring, please refer to fig. 2, the self-piercing riveting die of the embodiment includes a body 200, a circular concave die cavity 201 is disposed on the top surface of the body 200, a ring of pressing ring 202 is formed on the top surface of the body 200, and a support for a lower plate is formed during riveting. The middle part of the circular concave die cavity 201 is provided with a boss 203, the body 200 is provided with an annular groove 204 at the bottom of the circular concave die cavity 201 around the boss 203, a floating ring 205 is arranged in the annular groove 204, the annular groove 204 is provided with a necking, and a shoulder 205a is correspondingly arranged on the floating ring 205, so that the floating ring 205 cannot be separated when moving upwards in the annular groove 204. The bottom of the body 200 comprises a cover plate 200a, the cover plate 200a closes the bottom of the annular groove 204, after the floating ring 205 is embedded into the annular groove 204, the spring 206 is connected to the bottom of the floating ring 205, the other end of the spring 206 is connected with a movable block 207, the movable block 207 is embedded into the annular groove 204, the cover plate 200a is covered, an adjusting screw 208 is arranged on the cover plate 200a, the position of the adjusting screw 208 corresponds to that of the movable block 207, the screwing depth of the adjusting screw 208 determines the position of the movable block 207 in the annular groove 204, namely the initial compression amount of the spring 206, and further the elastic force of the floating ring 205 is adjusted. The top surface of the floating ring 205 is arranged to be flat, and when the floating ring 205 is moved up to the limit position, the top surface of the floating ring 205 is flush with the vertex of the boss 203. When the floating ring 205 moves down to the bottom, the top surface of the floating ring 205 can smoothly connect the side wall of the circular recessed mold cavity 201 and the side wall of the boss 203. During riveting, the floating ring 205 moves downwards continuously, the spring 206 is compressed to form an upward elastic force, and the elastic force formed by the larger the downward movement distance of the floating ring is, the stronger the upward elastic force is.
Claims (5)
1. The utility model provides a from dashing riveted die, its characterized in that, includes the body, the body is equipped with circular sunken die cavity, the middle part of circular sunken die cavity is equipped with the boss, the body centers on the boss is equipped with the ring channel, be equipped with the floating ring in the ring channel, the floating ring by the restriction in reciprocate in the ring channel, the upward elasticity that receives when the floating ring moves down increases and increases along with the distance that moves down, the top surface of floating ring is in when the floating ring moves down to the bottom with the lateral wall of circular sunken die cavity and the lateral wall of boss constitute smooth connection.
2. The self-piercing riveted cavity die of claim 1, wherein a hydraulic oil is filled between the floating ring and the annular groove.
3. A self-piercing riveting die according to claim 1, wherein a spring is connected between the floating ring and the bottom of the annular groove.
4. The self-piercing riveting die according to claim 3, wherein the groove bottom of the annular groove is a movable block embedded in the body, the body is provided with an adjusting screw for adjusting the height of the movable block, and the spring is connected with the movable block.
5. The self-piercing riveted cavity die of claim 1, wherein the top surface of the floating ring is planar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022251976.XU CN213763886U (en) | 2020-10-12 | 2020-10-12 | Self-piercing riveting female die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022251976.XU CN213763886U (en) | 2020-10-12 | 2020-10-12 | Self-piercing riveting female die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213763886U true CN213763886U (en) | 2021-07-23 |
Family
ID=76908485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022251976.XU Active CN213763886U (en) | 2020-10-12 | 2020-10-12 | Self-piercing riveting female die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213763886U (en) |
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2020
- 2020-10-12 CN CN202022251976.XU patent/CN213763886U/en active Active
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