CN114505432B - Pier extrusion die capable of changing section width of stamping part and pier extrusion precision cutting process - Google Patents
Pier extrusion die capable of changing section width of stamping part and pier extrusion precision cutting process Download PDFInfo
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- CN114505432B CN114505432B CN202210171826.9A CN202210171826A CN114505432B CN 114505432 B CN114505432 B CN 114505432B CN 202210171826 A CN202210171826 A CN 202210171826A CN 114505432 B CN114505432 B CN 114505432B
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- 238000001125 extrusion Methods 0.000 title claims abstract description 101
- 238000005520 cutting process Methods 0.000 title claims abstract description 47
- 239000000463 material Substances 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 24
- 229910052742 iron Inorganic materials 0.000 description 12
- 238000010586 diagram Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
- B21K27/06—Cutting-off means; Arrangements thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a pier extrusion die for changing the section width of a stamping part, which comprises an upper die, a lower die, a pier extrusion male die and a pier extrusion female die; the lower die can be close to or far away from the upper die; the pier extruding male die is arranged on the upper die, and a first pier extruding inclined surface is arranged on one side, close to the pier extruding female die, of the pier extruding male die; the pier extrusion die is arranged on the lower die, a pier extrusion groove is formed in the pier extrusion die, a second pier extrusion inclined plane is arranged on the pier extrusion die, the second pier extrusion inclined plane and the first pier extrusion inclined plane are oppositely arranged to limit material flow, and the lower die is close to the upper die so that the pier extrusion die is close to the pier extrusion male die to enable the material to be extruded into the pier extrusion groove. The invention also discloses a pier extruding and precision cutting process, which adopts a pier extruding technology to extrude a part of materials to be thick, and the purpose of pier extruding is quickly achieved, so that the widening surface is increased, and then the pier extruding and precision cutting process is performed in a profiling manner, so that the pier extruding and precision cutting process is convenient to rivet with a yoke plate.
Description
Technical Field
The invention relates to the technical field of dies, in particular to a pier extrusion die for changing the section width of a stamping part and a pier extrusion precision cutting process.
Background
The U-shaped yoke is a common part, is usually riveted and matched with a yoke plate, is usually directly riveted and riveted by a chopping and riveting mode, and a chopping and riveting male die is utilized to directly chop out a piece of material from the edge of the U-shaped yoke on the plane of the edge of the U-shaped groove and squeeze the material to the side face, so that the yoke plate fixed on the U-shaped yoke is locked.
In the riveting process of the U-shaped yoke iron and the yoke iron plate, for the U-shaped yoke iron with thin element materials, the blanking section is relatively narrow, the matching area with the yoke iron plate is small, the yoke iron plate is not stably placed in the cutting and riveting process, the whole parallelism after cutting and riveting is unstable, if the electronic element materials are thickened, the blanking section is increased, but the size and weight of the whole relay are changed due to the thickening of the materials, and the cost is increased; in addition, the blanking section of the yoke iron in the relay is matched with the armature iron, and the joint surface of the yoke iron and the armature iron is narrow, so that the joint surface of the armature iron can be influenced, and the voltage is unstable when the relay is powered on and powered off. The conventional method is to directly and normally punch out the required section on the plane of the raw material, so that the punched section=the matching surface, the material thickness can only be increased by increasing the matching section, the cost is increased, and the whole relay structure is changed. In view of the above, the present inventors have studied to solve the above-mentioned drawbacks of the prior art and have made the present invention.
Disclosure of Invention
The present invention aims to solve at least to some extent one of the technical problems in the above-described technology. Therefore, an object of the present invention is to provide a upsetting die for changing the cross-sectional width of a stamping part, which uses upsetting technology to extrude a part of material to be thick, so as to achieve the purpose of upsetting rapidly, thereby increasing the width and facilitating the riveting with a yoke plate.
The second aim of the invention is to provide a pier extruding and precision cutting process, which adopts a pier extruding technology to extrude a part of materials to be thick, thereby rapidly achieving the purpose of pier extruding, further widening the surface, and then profiling and precision cutting, thereby facilitating the riveting with a yoke plate.
In order to achieve the above purpose, an embodiment of the present invention provides a pier extrusion die for changing a cross-sectional width of a stamping part, including an upper die, a lower die, a pier extrusion male die and a pier extrusion female die;
the lower die can be close to or far away from the upper die;
The pier extruding male die is arranged on the upper die, and a first pier extruding inclined surface is arranged on one side, close to the pier extruding female die, of the pier extruding male die;
the pier extrusion die is arranged on the lower die, a pier extrusion groove is formed in the pier extrusion die, a second pier extrusion inclined plane is arranged on the pier extrusion die, the second pier extrusion inclined plane and the first pier extrusion inclined plane are oppositely arranged to limit material flow, and the lower die is close to the upper die so that the pier extrusion die is close to the pier extrusion male die to enable the material to be extruded into the pier extrusion groove.
According to the pier extrusion die for changing the section width of the stamping part, when the pier is extruded, the U-shaped yoke is placed on the lower die, then the lower die is close to the upper die, at the moment, the second pier extrusion inclined plane and the first pier extrusion inclined plane are close to each other to limit the material flow, and the pier extrusion male die extrudes the U-shaped yoke to enable part of the material of the U-shaped yoke to flow into the pier extrusion groove, so that the pier extrusion purpose is achieved quickly, the width is increased, and the U-shaped yoke is conveniently riveted with the yoke plate. The second pier extrusion inclined plane and the first pier extrusion inclined plane can limit the material flowing direction of the U-shaped yoke iron, so that most of materials flow into the pier extrusion groove, and rapid pier extrusion is realized.
In addition, the upsetting die for changing the section width of the stamping part according to the embodiment of the invention can also have the following additional technical characteristics:
Further, the material extrusion die further comprises a leveling male die, wherein the leveling male die is arranged on the upper die and is positioned on one side of the pier extrusion male die, and the end part of the leveling male die is positioned above the pier extrusion female die so as to improve the bulge amount of the material.
Further, the pier extruding groove comprises a first inclined surface and a second inclined surface, the inclination of the first inclined surface is 12.3 degrees, and the inclination of the second inclined surface is 129.1 degrees.
Further, the first inclined plane and the second inclined plane are transited through the curved surface.
Further, the distance between the first pier extrusion inclined plane and the second pier extrusion inclined plane after die assembly is 0.05mm.
Further, the slope of the first pier stud is 2.3 degrees and the slope of the second pier stud is 2.5 degrees.
Further, a draft angle which is convenient for demoulding is arranged on one side of the pier extruding male die, which is close to the leveling male die.
Further, the draft angle was 2 degrees.
In order to achieve the above objective, a second aspect of the present invention provides a pier extruding and finishing process, which includes the following steps:
Step one, placing a U-shaped yoke on a lower die;
Step two, the lower die is close to the upper die;
step three, the pier extruding male die approaches the pier extruding female die to flow part of the materials of the U-shaped yoke into the pier extruding groove;
and step four, the lower die is far away from the upper die, and the U-shaped yoke after the pier extrusion is completed is taken out.
According to the pier extruding and precision cutting process, when the pier is extruded, the U-shaped yoke is firstly placed on the lower die, then the lower die is close to the upper die, the pier extruding male die is close to the pier extruding female die, part of materials of the U-shaped yoke flow into the pier extruding groove, and finally the lower die is far away from the upper die, and the processed U-shaped yoke is taken out. Therefore, a part of materials are extruded to be thick, the aim of upsetting is achieved rapidly, the wide surface is increased, and the riveting with the yoke plate is facilitated. The second pier extrusion inclined plane and the first pier extrusion inclined plane can limit the material flowing direction of the U-shaped yoke iron, so that most of materials flow into the pier extrusion groove, and rapid pier extrusion is realized.
Further, the method also comprises a fine cutting process, wherein the fine cutting process uses a fine cutting die to carry out fine cutting, the fine cutting die comprises a fine cutting male die and a fine cutting groove, and the fine cutting male die and the fine cutting groove are mutually close to each other so as to punch out redundant materials of the U-shaped yoke after the pier extrusion is completed.
Drawings
FIG. 1 is a schematic structural view of a upsetting extrusion die for changing the cross-sectional width of a stamping part according to an embodiment of the invention;
FIG. 2 is a schematic diagram showing connection of a pier extrusion male and a pier extrusion female according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is an exploded view of a pier extrusion punch and a pier extrusion die according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a structure of a U-shaped yoke without upsetting in accordance with an embodiment of the present invention;
Fig. 6 is a schematic structural view of a U-shaped yoke according to an embodiment of the present invention after being swaged by a swaging die;
Fig. 7 is a schematic diagram of a structure of a U-shaped yoke after upsetting by a fine cutting die according to an embodiment of the present invention;
fig. 8 is a schematic diagram showing a structure of a U-shaped yoke after finishing cutting according to an embodiment of the present invention.
Description of the reference numerals
An upper die 1;
A lower die 2;
A pier extruding male die 3 and a first pier extruding inclined surface 31;
pier extruding die 4, pier extruding groove 41, first inclined surface 411, second inclined surface 412, curved surface 413, second pier extruding inclined surface 42;
Leveling the male die 5;
fine cutting male die 6;
Fine cutting grooves 7;
A U-shaped yoke 10.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1 to 8, a pier extrusion die for changing the cross-sectional width of a stamping part according to an embodiment of the present invention includes an upper die 1, a lower die 2, a pier extrusion punch 3 and a pier extrusion die 4.
Wherein the lower die 2 can be close to or far from the upper die 1; the pier extruding male die 3 is arranged on the upper die 1, and a first pier extruding inclined surface 31 is arranged on one side, close to the pier extruding female die 4, of the pier extruding male die 3; the pier extruding die 4 is arranged on the lower die 2, a pier extruding groove 41 is formed in the pier extruding die 4, a second pier extruding inclined surface 42 is arranged on the pier extruding die 4, the second pier extruding inclined surface 42 is opposite to the first pier extruding inclined surface 31 to limit the material flow, and the lower die 2 is close to the upper die 1 so that the pier extruding die 4 is close to the pier extruding male die 3 to enable the material to extrude into the pier extruding groove 41.
When the U-shaped yoke 10 is extruded, the lower die 2 is placed on the lower die 2, then the lower die 2 is close to the upper die 1, at the moment, the second extruding inclined plane 42 and the first extruding inclined plane 31 are close to each other to limit the material flow, and the extruding male die 3 extrudes the U-shaped yoke 10 to enable part of the material of the U-shaped yoke 10 to flow into the extruding groove 41, so that the extruding purpose of the extruding part of the material is achieved quickly, the width is increased, and the extruding male die is convenient to rivet with the yoke plate. The second pier extruding inclined surface 42 and the first pier extruding inclined surface 31 can limit the material flowing direction of the U-shaped yoke 10, so that most of the material flows into the pier extruding groove 41, and rapid pier extruding is realized.
Optionally, the pier extruding die further comprises a leveling male die 5, wherein the leveling male die 5 is arranged on the upper die 1 and is positioned on one side of the pier extruding male die 3, and the end part of the leveling male die 5 is positioned above the pier extruding female die 4 so as to improve the bulge amount of the material. The pier extrusion male die 3 is matched with the leveling male die 5, and the material on one side of the pier extrusion male die 3 is raised due to pier extrusion, and in the example, the leveling male die 5 can inhibit overpressure and improve the raising amount of the material, so that the material of the U-shaped yoke 1 flows towards the vacant position of the pier extrusion groove 41, and the pier extrusion purpose is achieved rapidly.
In this example, as shown in fig. 4, the upsetting groove 41 includes a first inclined surface 411 and a second inclined surface 412, the first inclined surface 411 has a slope of 12.3 degrees, and the second inclined surface 412 has a slope of 129.1 degrees, and in this example, by providing the leveling punch 5, the leveling punch 5 can suppress excessive pressure, and can improve the amount of bulging of the material, so that the material of the U-shaped yoke 10 flows toward the first inclined surface 411 and the second inclined surface 412 of the upsetting groove 41. When the pier is extruded, the leveling male die 5 is propped against the side part of the U-shaped yoke 10, so that when the pier extruding male die 3 is used for extruding the U-shaped yoke 10, the material is prevented from flowing to the position, and most of the material of the U-shaped yoke 10 flows to the vacant position of the pier extruding groove 41, thereby achieving the aim of rapid pier extrusion.
As shown in fig. 4, the first inclined surface 411 has an inclination a of 12.3 degrees and the second inclined surface 412 has an inclination B of 129.1 degrees, so that the material of the U-shaped yoke 10 quickly flows onto the first inclined surface 411 and the second inclined surface 412 of the pier extrusion groove 41 in order to match the second pier extrusion inclined surface 42 with the first pier extrusion inclined surface 31. The greater the slope of the first inclined surface 411, the wider the bottom plane results in less material in the pier extrusion groove 41, while the smaller the slope of the first inclined surface 411, the more material the pier is extruding and consuming on the inclined surface, and the purpose of rapid pier extrusion cannot be achieved, so that a reasonable inclined surface angle is of critical importance. The inventor has found through research that when the inclination A of the first inclined surface 411 is 12.3 degrees and the inclination B of the second inclined surface 412 is 129.1 degrees, the pier extruding groove 41 is full in material and less in pier extruding loss. In this example, the slope B of the second inclined surface 412 is 129.1 degrees, where the inclined surface is designed to prevent the material after upsetting from locking with the upsetting grooves 41, so as to facilitate smooth stripping.
In some examples, the first inclined surface 411 and the second inclined surface 412 are transited through the curved surface 413, and the curved surface 413 can make the bottom of the U-shaped yoke 10 after finishing the upsetting more gentle, so that the subsequent finish cutting is facilitated, and meanwhile, the riveting with the yoke plate is facilitated.
As an example, the distance between the second pier extruding slope 42 and the first pier extruding slope 31 after the mold closing is 0.05mm, the inclination C of the first pier extruding slope 31 is 2.3 degrees, and the inclination D of the second pier extruding slope 42 is 2.5 degrees. Therefore, the material flowing direction can be limited during the pier extrusion, so that most of the material flows in the direction with large space (the pier extrusion groove 41), namely, most of the material between the second pier extrusion inclined surface 42 and the first pier extrusion inclined surface 31 flows in the direction of the pier extrusion groove 41, thereby realizing the pier extrusion rapidly.
In order to improve the service life of the pier extruding male 3, a draft angle which is convenient for demoulding is arranged on one side of the pier extruding male 3 close to the leveling male 5. Wherein the draft angle F is preferably 2 degrees. Therefore, after the pier extrusion is finished, the pier extrusion male mold 3 can be smoothly stripped, and the pier extrusion male mold 3 has short service life and is easy to collapse without the draft angle.
The invention also provides a pier extruding and precision cutting process, which comprises the following steps:
step one, placing a U-shaped yoke 10 on a lower die 2;
Step two, the lower die 2 is close to the upper die 1;
Step three, the pier extruding male die 3 approaches the pier extruding female die 4 to flow part of the material of the U-shaped yoke 10 into the pier extruding groove 41;
and step four, the lower die 2 is far away from the upper die 1, and the U-shaped yoke 10 after finishing the upsetting is taken out.
In the pier extrusion, the U-shaped yoke 10 is firstly placed on the lower die 2, then the lower die 2 is close to the upper die 1, the pier extrusion male die 3 is close to the pier extrusion female die 4, part of the material of the U-shaped yoke 10 flows into the pier extrusion groove 41, and finally the lower die 2 is far away from the upper die 1, and the processed U-shaped yoke 10 is taken out. Therefore, a part of materials are extruded to be thick, the aim of upsetting is achieved rapidly, the wide surface is increased, and the riveting with the yoke plate is facilitated. The second pier extruding inclined surface 42 and the first pier extruding inclined surface 31 can limit the material flowing direction of the U-shaped yoke 10, so that most of the material flows into the pier extruding groove 41, and rapid pier extruding is realized.
In this example, the pier extruding and fine cutting process further includes a fine cutting process, in which a fine cutting die is used for fine cutting, as shown in fig. 7, the fine cutting die includes a fine cutting male die 6 and a fine cutting groove 7, and the fine cutting male die 6 and the fine cutting groove 7 are close to each other to blank the surplus material of the U-shaped yoke after the pier extruding is completed.
According to the invention, the material thickness is increased through the pier extrusion die, then the precision cutting process is matched with the design, the precision cutting male die 6 and the precision cutting groove 7 are matched with each other to cut off redundant materials, and finally the matching surface is widened from 2.5mm to 3.42mm, and the wide surface is increased by more than 35%; the width of the yoke plate riveting or armature attaching is effectively improved through the upsetting and extruding process, and the assembly requirement is met.
The above examples and drawings are not intended to limit the form or form of the present invention, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present invention.
Claims (5)
1. The utility model provides a mound extrusion die of change stamping workpiece cross-section width which characterized in that: comprises an upper die, a lower die, a pier extruding male die and a pier extruding female die;
the lower die can be close to or far away from the upper die; the pier extruding male die is arranged on the upper die, and a first pier extruding inclined surface is arranged on one side, close to the pier extruding female die, of the pier extruding male die; the pier extrusion concave die is arranged on the lower die, a pier extrusion groove is formed in the pier extrusion concave die, a second pier extrusion inclined plane is arranged on the pier extrusion concave die, the second pier extrusion inclined plane is opposite to the first pier extrusion inclined plane so as to limit the material flow, and the lower die is close to the upper die so that the pier extrusion concave die is close to the pier extrusion convex die to enable the material to be extruded into the pier extrusion groove;
The upsetting groove comprises a first inclined surface and a second inclined surface, the inclination of the first inclined surface is 12.3 degrees, and the inclination of the second inclined surface is 129.1 degrees; the first inclined plane and the second inclined plane are transited through a curved surface; the distance between the first pier extrusion inclined plane and the second pier extrusion inclined plane after die assembly is 0.05mm; the slope of the first pier extruding inclined surface is 2.3 degrees, and the slope of the second pier extruding inclined surface is 2.5 degrees.
2. A upsetting die for changing the cross-sectional width of a stamping part as recited in claim 1, wherein: the leveling male die is arranged on the upper die and located on one side of the pier extruding male die, and the end part of the leveling male die is located above the pier extruding female die to improve the bulge amount of materials.
3. A upsetting die for changing the cross-sectional width of a stamping part as recited in claim 1, wherein: one side of the pier extruding male die, which is close to the leveling male die, is provided with a draft angle which is convenient for demoulding.
4. A upsetting die for changing the cross-sectional width of a stamping part as recited in claim 3, further comprising: the draft angle was 2 degrees.
5. A pier extrusion precision cutting process based on the pier extrusion die for changing the cross-sectional width of a stamping part according to any one of claims 1-4, which is characterized in that: the method comprises the following steps:
Step one, placing a U-shaped yoke on a lower die;
Step two, the lower die is close to the upper die;
step three, the pier extruding male die approaches the pier extruding female die to flow part of the materials of the U-shaped yoke into the pier extruding groove;
step four, the lower die is far away from the upper die, and the U-shaped yoke after finishing upsetting is taken out;
The fine cutting process uses a fine cutting die to carry out fine cutting, wherein the fine cutting die comprises a fine cutting male die and a fine cutting groove, and the fine cutting male die and the fine cutting groove are mutually close to each other so as to punch out redundant materials of the U-shaped yoke after upsetting and extruding are completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210171826.9A CN114505432B (en) | 2022-02-24 | 2022-02-24 | Pier extrusion die capable of changing section width of stamping part and pier extrusion precision cutting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210171826.9A CN114505432B (en) | 2022-02-24 | 2022-02-24 | Pier extrusion die capable of changing section width of stamping part and pier extrusion precision cutting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114505432A CN114505432A (en) | 2022-05-17 |
| CN114505432B true CN114505432B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210171826.9A Active CN114505432B (en) | 2022-02-24 | 2022-02-24 | Pier extrusion die capable of changing section width of stamping part and pier extrusion precision cutting process |
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| CN (1) | CN114505432B (en) |
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