CN211437976U - Large-size electric upsetting anvil electrode and anvil electrode assembly - Google Patents
Large-size electric upsetting anvil electrode and anvil electrode assembly Download PDFInfo
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- CN211437976U CN211437976U CN202020130184.4U CN202020130184U CN211437976U CN 211437976 U CN211437976 U CN 211437976U CN 202020130184 U CN202020130184 U CN 202020130184U CN 211437976 U CN211437976 U CN 211437976U
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Abstract
The utility model discloses a large-specification electric upsetting forming anvil electrode, wherein a conical blind hole positioned in the center is arranged on the front end surface of the anvil electrode, and the aperture of the conical blind hole is gradually increased from inside to outside; the bottom surface and the side surface of the conical blind hole are both working surfaces; the bottom surface of the conical blind hole is circular, and the conical blind hole is in a round table shape. The utility model also discloses a hammering block electrode subassembly, including the hammering block electrode, still include the hammering block and keep the piece, hammering block keeps piece central authorities to be equipped with the mounting hole, and the rear end face of hammering block electrode is placed in the mounting hole towards the mounting hole, hammering block electrode lateral surface and mounting hole clearance fit. The utility model provides a plane hammering block electrode among the prior art can't improve the technical problem of the garlic head terminal surface depth of sinking, can reduce the garlic head terminal surface depth of sinking.
Description
Technical Field
The utility model belongs to metal plasticity in the material processing engineering field of taking shape. In particular to an anvil electrode specially used for large-specification electric upsetting forming and an assembly thereof.
Background
The electric upsetting process is a forming process coupling three physical fields of electric heating force, current is conducted between an anvil electrode and a clamping electrode, heating is carried out through a contact resistor and a self resistor, a certain upsetting force is applied to the right end of a blank, the blank at a cold end is sent into a heating area between the anvil electrode and the clamping electrode, so that the blank is subjected to plastic deformation gradually under a certain temperature condition, and local precise continuous material gathering is completed.
When an oversized air valve blank is formed, particularly under the conditions of more aggregates and large variable section rate, in order to achieve a certain diameter of the electric upsetting garlic, the upsetting force and the current in the electric upsetting forming process are both large. This easily causes the "sinking" defect of the end surface of the electric upsetting blank garlic, which is expressed by the sinking depth of the end surface of the electric upsetting blank garlic and is shown in fig. 1: the sinking depth is the distance from the end surface of the garlic bulb to the center of the garlic bulb and is indicated by H. On the one hand, too great a sinking depth may cause uneven deformation of the blank and even the formation of collapse defects during the electric heading forming process. On the other hand, too great a depression depth during subsequent die forming can present a "gas lock" problem.
Generally, for the large-size gas valve blank with the variable cross-section rate being overlarge, improvement from the aspect of electric upsetting process parameters is difficult to achieve unilaterally. In conventional electric upsetting forming apparatuses, the anvil is generally flat. In the process of electric upsetting, the flat anvil cannot overcome the defect of large sinking depth of the end face of the garlic bulb after electric upsetting forming, and particularly when the upsetting force in the process of electric upsetting exceeds a certain limit, the flat anvil can increase the sinking depth.
SUMMERY OF THE UTILITY MODEL
Not enough to above-mentioned technique, the utility model provides a big specification electric upsetting anvil electrode that takes shape solves the plane anvil electrode among the prior art and can't improve the technical problem of garlic head terminal surface depth of sinking, can reduce the garlic head terminal surface depth of sinking.
In order to solve the technical problem, the technical scheme of the utility model is that a conical blind hole is arranged in the center on the front end face of the anvil electrode, and the aperture of the conical blind hole is gradually increased from inside to outside; the bottom surface and the side surface of the conical blind hole are both working surfaces; the bottom surface of the conical blind hole is circular, and the conical blind hole is in a round table shape.
Furthermore, the edge of the conical blind hole is chamfered with a fillet.
Further, the anvil electrode is flat cylindrical as a whole.
The utility model also provides a hammering block electrode subassembly, including above-mentioned hammering block electrode, still include the hammering block and keep the piece, hammering block keeps piece central authorities to be equipped with the mounting hole, and the rear end face of hammering block electrode is placed in the mounting hole towards the mounting hole, hammering block electrode lateral surface and mounting hole clearance fit.
Compared with the prior art, the utility model has the advantages of include:
1. the bottom surface and the side of toper blind hole are the working face, at the electric upsetting initial stage, the contact of pole material terminal surface and the bottom surface of toper blind hole to gather the material and form the garlic gradually, along with the increase of upset power and temperature rise, the garlic head terminal surface takes place to cave in, the garlic head center breaks away from the bottom surface of toper blind hole, but near the garlic head peripheral surface near the garlic head terminal surface can take place the precontact (the plane type hammering block then can not take place the precontact) with the side of toper blind hole, thereby just accomplished plastic deformation before continuing to sink, the deepening of sinking depth has so been avoided.
2. Meanwhile, in the pre-contact process, the contact area between the anvil electrode and the garlic bulb is increased, the pressure is reduced, the sinking depth is reduced in cooperation, and the concave shape of the end face of the garlic bulb formed by electric upsetting of the oversized air valve blank is improved.
3. The edge of the conical blind hole is chamfered with a round angle, so that the surface of a workpiece is prevented from being scratched.
4. The anvil electrode is flat cylindrical as a whole, and is convenient to process, manufacture and install.
5. The utility model discloses an anvil electrode subassembly passes through the anvil and keeps a piece installation anvil electrode, conveniently replaces the anvil electrode, and the anvil keeps the piece still to play the effect of protection anvil electrode.
Drawings
FIG. 1 is a schematic view showing the depth of the depression formed by the end surface of the garlic bulb on the flat anvil electrode;
FIG. 2 is a schematic structural view of a large-gauge electric upsetting anvil electrode in this embodiment;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a schematic view of the anvil electrode assembly;
FIG. 5 is a schematic illustration of an electrical upset using a large gauge electrical upset forming anvil electrode in this embodiment;
fig. 6 is a schematic view showing the sinking depth of the end face of the garlic bulb formed on the large-sized electrically upsetting anvil electrode in this embodiment.
Detailed Description
Referring to fig. 2 and 3, the large-specification electric upsetting anvil electrode is characterized in that a conical blind hole 101 is arranged in the center of the front end face of the anvil electrode 1, and the diameter of the conical blind hole 101 gradually increases from inside to outside; the bottom surface and the side surface of the conical blind hole are both working surfaces; the bottom surface of the conical blind hole 101 is circular, the conical blind hole is in a truncated cone shape, the side surface is an arc surface, and the side surface is matched with the shape of the outer surface of the garlic bulb. The edge of the conical blind hole is chamfered with a round angle, so that the surface of a workpiece is prevented from being scratched.
Referring to fig. 4, the anvil electrode assembly includes the anvil electrode 1, and further includes an anvil holding block 2, wherein the anvil holding block 2 has a mounting hole at the center, the rear end surface of the anvil electrode 1 faces the mounting hole and is placed in the mounting hole, and the outer side surface of the anvil electrode is in clearance fit with the mounting hole. Further comprising an anvil 3 for mounting the anvil-holding block 2, the anvil-holding block 2 being mounted on the anvil 3 in a clearance fit. And an anvil block 4 for mounting the anvil, the anvil 3 being mounted on the anvil block 4 in a clearance fit, the anvil block being adapted to be mounted on the anvil cylinder. The anvil electrode is flat cylindrical as a whole, and the anvil holding block and the anvil block are correspondingly cylindrical, so that the anvil electrode is convenient to process, manufacture and install.
The anvil electrode and the anvil holding block are restricted from relative rotation by an anti-rotation pin. The anti-rotation pin is parallel to the axis of the mounting hole and fixed on the side wall of the mounting hole, and a half groove for clamping the anti-rotation pin is arranged on the outer side surface of the anvil electrode. During installation, the half-groove is aligned to the anti-rotation pin and sent into the installation hole, and the anti-rotation pin can play a role in guiding when the anvil electrode is installed.
Referring to fig. 5, when the large-sized electric upsetting anvil electrode in the present embodiment is used for electric upsetting, the anvil electrode 1 is mounted on the anvil cylinder 6, the rod 5 is located at one end of the anvil electrode, and the rod is gathered under the speed difference between the anvil cylinder 6 and the upsetting cylinder 7, so that the end face of the garlic bulb is depressed as the upsetting force F increases and the temperature increases, the center of the garlic bulb is separated from the bottom surface of the tapered blind hole, but the outer peripheral surface of the garlic bulb near the end face of the garlic bulb can be in pre-contact with the side surface of the tapered blind hole (the flat anvil cannot be in pre-contact). The time of the concave anvil contacting the material on the arc surface AA '-BB' is earlier than that of the traditional planar anvil, so that the contact area between the concave anvil and the material is increased in advance, and the pressure is reduced. In the subsequent material gathering process, since the material is in contact with the concave anvil in advance and the sinking depth is relatively small, when the upsetting force is increased, the sinking depth of the electric upsetting blank using the concave anvil device is not increased, and the sinking depth formed finally is as shown in fig. 6. The traditional plane anvil is in contact with the material relatively lagged, the sinking depth is larger than the depth of an electric upsetting blank using the concave anvil device, the contact area is relatively smaller than that of the concave anvil, the pressure is larger, and under the synergistic effect of larger upsetting force and pressure, the sinking depth of the end face of the garlic head can be increased by continuous gathering until the upsetting force and the temperature of the material are balanced.
Therefore, when the air valve blank with the ultra-large specification is formed by electric upsetting, the concave anvil electrode with the conical blind hole can reduce the sinking depth of the garlic head end surface of the electric upsetting blank and improve the sinking defect.
Claims (8)
1. A big specification electric upsetting shape hammering block electrode which characterized in that: the front end face of the anvil electrode is provided with a conical blind hole positioned in the center, and the aperture of the conical blind hole is gradually increased from inside to outside; the bottom surface and the side surface of the conical blind hole are both working surfaces; the bottom surface of the conical blind hole is circular, and the conical blind hole is in a round table shape.
2. The large format electric upset forming anvil electrode of claim 1, wherein: the edge of the conical blind hole is chamfered with a fillet.
3. The large format electric upset forming anvil electrode of claim 1, wherein: the anvil electrode is flat cylindrical as a whole.
4. An anvil electrode assembly, comprising: the anvil electrode according to any one of claims 1 to 3, further comprising an anvil holding block having a mounting hole formed in a center thereof, wherein a rear end surface of the anvil electrode faces the mounting hole and is disposed in the mounting hole, and an outer side surface of the anvil electrode is in clearance fit with the mounting hole.
5. The anvil electrode assembly of claim 4, wherein: the anvil electrode and the anvil holding block are restricted from relative rotation by an anti-rotation pin.
6. The anvil electrode assembly of claim 5, wherein: the anti-rotation pin is parallel to the axis of the mounting hole and fixed on the side wall of the mounting hole, and a half groove for clamping the anti-rotation pin is arranged on the outer side surface of the anvil electrode.
7. The anvil electrode assembly of claim 4, wherein: an anvil for mounting the anvil retention block is also included, with the anvil retention block being mounted on the anvil in a clearance fit.
8. The anvil electrode assembly of claim 4, wherein: the device also comprises an anvil block for mounting the anvil, and the anvil is mounted on the anvil block in a clearance fit mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020130184.4U CN211437976U (en) | 2020-01-20 | 2020-01-20 | Large-size electric upsetting anvil electrode and anvil electrode assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020130184.4U CN211437976U (en) | 2020-01-20 | 2020-01-20 | Large-size electric upsetting anvil electrode and anvil electrode assembly |
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| CN211437976U true CN211437976U (en) | 2020-09-08 |
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| CN202020130184.4U Active CN211437976U (en) | 2020-01-20 | 2020-01-20 | Large-size electric upsetting anvil electrode and anvil electrode assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112355211A (en) * | 2020-09-30 | 2021-02-12 | 江苏永茂普隆汽车配件制造有限公司 | Manufacturing method of free forging |
| CN112676519A (en) * | 2020-12-23 | 2021-04-20 | 重庆大学 | Large-specification electric upsetting method with gradient change of electrode resistivity and anvil electrode |
-
2020
- 2020-01-20 CN CN202020130184.4U patent/CN211437976U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112355211A (en) * | 2020-09-30 | 2021-02-12 | 江苏永茂普隆汽车配件制造有限公司 | Manufacturing method of free forging |
| CN112676519A (en) * | 2020-12-23 | 2021-04-20 | 重庆大学 | Large-specification electric upsetting method with gradient change of electrode resistivity and anvil electrode |
| CN112676519B (en) * | 2020-12-23 | 2022-01-18 | 重庆大学 | Large-specification electric upsetting method with gradient change of electrode resistivity and anvil electrode |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221114 Address after: No. 276, Lingshun North Road, Hushu Town, Jiangning District, Nanjing City, Jiangsu Province, 211122 Patentee after: Nanjing COSCO marine equipment accessories Co.,Ltd. Patentee after: COSCO SHIPPING HEAVY INDUSTRY Co.,Ltd. Address before: No. 276, Lingshun North Road, Hushu Town, Jiangning District, Nanjing City, Jiangsu Province, 211122 Patentee before: Nanjing COSCO marine equipment accessories Co.,Ltd. |
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| TR01 | Transfer of patent right |