CN220161048U - Combined hydraulic expansion type cold deformation strengthening die for non-magnetic steel retaining ring forge piece - Google Patents
Combined hydraulic expansion type cold deformation strengthening die for non-magnetic steel retaining ring forge piece Download PDFInfo
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- CN220161048U CN220161048U CN202321378686.9U CN202321378686U CN220161048U CN 220161048 U CN220161048 U CN 220161048U CN 202321378686 U CN202321378686 U CN 202321378686U CN 220161048 U CN220161048 U CN 220161048U
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- China
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- magnetic steel
- ring forging
- guard ring
- steel guard
- lower punch
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 64
- 239000010959 steel Substances 0.000 title claims abstract description 64
- 238000005728 strengthening Methods 0.000 title claims abstract description 25
- 238000005242 forging Methods 0.000 claims abstract description 63
- 239000007788 liquid Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 17
- 239000012530 fluid Substances 0.000 abstract description 9
- 238000001802 infusion Methods 0.000 abstract description 6
- 230000001502 supplementing effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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Abstract
The utility model discloses a combined hydraulic expansion type cold deformation strengthening die for a non-magnetic steel guard ring forging piece, which comprises an upper punch, a lower punch, a vertical reduction column, a high-pressure water pipe, a high-pressure pump and a one-way valve, wherein the upper punch and the lower punch are arranged on two sides of the non-magnetic steel guard ring forging piece and are symmetrical to each other, a liquid adding cavity is formed between the upper punch, the lower punch and the non-magnetic steel guard ring forging piece, the vertical reduction column is arranged on the lower punch, the high-pressure water pipe is arranged in the vertical reduction column and is communicated with an external liquid feeding device, a water inlet of the high-pressure pump is connected with the external water pipe, a water outlet of the high-pressure pump is connected with the high-pressure water pipe, and the one-way valve is arranged on the high-pressure water pipe. The utility model combines the advantages of external fluid infusion and internal pressurization, reduces the friction force between the forging piece and the die and uniformly bears the force. The full fluid infusion can be obtained in the whole strengthening process, and the forming shape of the non-magnetic steel guard ring forging is ensured.
Description
Technical Field
The utility model relates to the technical field of metal pressure processing, in particular to a combined hydraulic expansion type cold deformation strengthening die for a non-magnetic steel guard ring forging.
Background
The non-magnetic steel guard ring forging is used for protecting and fixing the end part of the rotor winding, and preventing the end winding from generating displacement and deformation when the rotor rotates. In the operation process of the generator, the non-magnetic steel guard ring forging is subjected to the stress caused by interference fit with the rotor body and the center ring besides the end windings and huge centrifugal force of the non-magnetic steel guard ring forging, and is a part with the largest stress in the generator, so that the non-magnetic steel guard ring forging needs extremely high strength.
The hydraulic bulging die is necessary equipment for manufacturing the non-magnetic steel guard ring forging, and the using method of the hydraulic bulging die is a necessary condition for enabling the non-magnetic steel guard ring forging to reach the required mechanical property in the cold deformation strengthening process. The existing hydraulic bulging die generally adopts an external fluid supplementing method or an internal pressurizing method to carry out hydraulic bulging cold deformation strengthening on the non-magnetic steel retaining ring forging. The single hydraulic bulging die can enable the non-magnetic steel guard ring forging to be stressed unevenly or the liquid supplementing is insufficient in the processing process, so that the non-magnetic steel guard ring forging cannot reach the target size and the mechanical property of the forging cannot be met.
Disclosure of Invention
The utility model aims to provide a combined hydraulic expansion type cold deformation strengthening die for a non-magnetic steel guard ring forging, which combines an external fluid supplementing method and an internal pressurizing type cold deformation strengthening method to solve the problem that a single hydraulic expansion die is uneven in stress or insufficient in fluid supplementing in the processing process in the prior art.
In order to solve the technical problems, the utility model provides a combined hydraulic expansion type cold deformation strengthening die for a non-magnetic steel guard ring forging piece, which comprises an upper punch, a lower punch, a reduction column, a high-pressure water pipe, a high-pressure pump and a one-way valve, wherein the upper punch and the lower punch are arranged on two sides of the non-magnetic steel guard ring forging piece and are symmetrical to each other, a liquid adding cavity is formed between the upper punch, the lower punch and the non-magnetic steel guard ring forging piece, the reduction column is arranged on the lower punch, the high-pressure water pipe is arranged in the reduction column and is communicated with an external liquid supply device, a water inlet of the high-pressure pump is connected with the external water pipe, a water outlet of the high-pressure pump is connected with the high-pressure water pipe, and the one-way valve is arranged on the high-pressure water pipe.
Further, the device also comprises a concave spherical surface pad and a convex spherical surface pad, wherein the concave spherical surface pad is arranged at the top of the upper punch, and the convex spherical surface pad is embedded into the concave spherical surface pad and is adaptive to the concave spherical surface pad.
Further, the upper punch and the lower punch are of round table-shaped structures with diameters gradually increasing from inside to outside.
Further, a first limiting hole is formed in the upper punch, the first end of the vertical reduction column is fixedly arranged on the lower punch, and the second end of the vertical reduction column is matched with the first limiting hole.
Further, the length of subtracting the stand is greater than the sum of the lengths of upper punch with the lower punch, open on the convex sphere pad have with external intercommunication second spacing hole, the second spacing hole with subtract the stand to adapt to, open on the concave sphere pad have the third spacing hole, the third spacing hole with subtract the stand to adapt to, the third spacing hole makes first spacing hole with second spacing hole intercommunication.
Further, the liquid medium in the external liquid supply device is water.
The beneficial effects of the utility model are as follows:
the utility model comprises an upper punch, a lower punch, a vertical reduction column, a high-pressure water pipe, a high-pressure pump and a one-way valve, wherein a liquid adding cavity is formed among the upper punch, the lower punch and the non-magnetic steel guard ring forging piece, and the high-pressure water pipe is arranged in the vertical reduction column and is communicated with an external liquid supply device. After the non-magnetic steel guard ring forging is installed on the die by a worker, the die is placed below the press, the non-return valve and the high-pressure pump are opened by the worker, the liquid adding cavity is filled with liquid medium, and at the moment, the two ends of the non-magnetic steel guard ring forging are respectively attached to the upper punch and the lower punch and are in a hard contact state. The diameter of the non-magnetic steel guard ring forging is enlarged through the pressure conducted by the high-pressure pump, so that the friction force is greatly reduced, the liquid is fully supplemented, and the non-magnetic steel guard ring forging cannot be in a horn shape. The working personnel control the press and the high-pressure pump to simultaneously pressurize, the pressure is conducted through the liquid medium, the diameter of the non-magnetic steel guard ring forging is increased along with the pressure increase in the liquid adding cavity, the height of the non-magnetic steel guard ring forging is shortened until the process target size is reached, and the cold deformation strengthening effect is achieved. The mechanical deformation of the non-magnetic steel guard ring forge piece in the compression starting stage is removed by the mode, the mechanical deformation is changed into liquid reinforcement, and the friction force between the forge piece and the die is reduced and the force is uniformly applied. And the full fluid infusion can be obtained in the whole strengthening process, so that the forming shape of the non-magnetic steel guard ring forge piece is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.
Wherein: 1. an upper punch; 2. a lower punch; 3. a non-magnetic steel guard ring forging; 4. subtracting the upright post; 5. a high pressure water pipe; 6. a high pressure pump; 7. a one-way valve; 8. a liquid adding cavity; 9. a concave spherical pad; 10. a convex spherical pad; 11. a first limiting hole; 12. a second limiting hole; 13. and a third limiting hole.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only one embodiment of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
The present utility model will be described in further detail with reference to the drawings and the embodiments, in order to make the objects, technical solutions and advantages of the present utility model more apparent.
In the following description, references to "one embodiment," "an embodiment," "one example," "an example," etc., indicate that the embodiment or example so described may include a particular feature, structure, characteristic, property, element, or limitation, but every embodiment or example does not necessarily include the particular feature, structure, characteristic, property, element, or limitation. In addition, repeated use of the phrase "according to an embodiment of the utility model" does not necessarily refer to the same embodiment, although it may.
As shown in fig. 1, the utility model discloses a combined hydraulic expansion type cold deformation strengthening die for a non-magnetic steel guard ring forging 3, which comprises an upper punch 1, a lower punch 2, a reduction column 4, a high-pressure water pipe 5, a high-pressure pump 6 and a one-way valve 7. The upper punch 1 and the lower punch 2 are arranged on two sides of the non-magnetic steel guard ring forging 3 and are symmetrical to each other, and a liquid adding cavity 8 is formed among the upper punch 1, the lower punch 2 and the non-magnetic steel guard ring forging 3. The vertical reduction column 4 is arranged on the lower punch 2, the high-pressure water pipe 5 is arranged in the vertical reduction column 4 and is communicated with the liquid feeding cavity 8 and the external liquid feeding device, the water inlet of the high-pressure pump 6 is connected with the external water pipe, the water outlet of the high-pressure pump 6 is connected with the high-pressure water pipe 5, and the check valve 7 is arranged on the high-pressure water pipe 5.
After the non-magnetic steel guard ring forging 3 is installed on the die by a worker, the die is placed below the press, the non-magnetic steel guard ring forging 3 is attached to the upper punch 1 and the lower punch 2 respectively at two ends of the non-magnetic steel guard ring forging 3 in a hard contact state by opening the one-way valve 7 and the high-pressure pump 6 by the worker, so that the liquid adding cavity 8 is filled with liquid medium. The diameter of the non-magnetic steel guard ring forging 3 is enlarged through the pressure conducted by the high-pressure pump 6, the friction force is greatly reduced, the liquid supplementing is sufficient, and the non-magnetic steel guard ring forging 3 cannot be in a horn shape. The working personnel control the press and the high-pressure pump 6 to simultaneously pressurize, the pressure is conducted through the liquid medium, the diameter of the non-magnetic steel guard ring forging 3 is increased along with the pressure increase in the liquid adding cavity 8, the height of the non-magnetic steel guard ring forging is shortened until the process target size is reached, and the cold deformation strengthening effect is achieved. The mechanical deformation of the non-magnetic steel guard ring forge piece 3 in the compression starting stage is removed by the mode, the liquid strengthening is realized, the friction force between the forge piece and the die is reduced, and the stress is uniform. And the full fluid infusion can be obtained in the whole strengthening process, so that the forming shape of the non-magnetic steel guard ring forging 3 is ensured.
In one embodiment, the device further comprises a concave spherical pad 9 and a convex spherical pad 10, wherein the concave spherical pad 9 is arranged on the top of the upper punch 1, and the convex spherical pad 10 is embedded in the concave spherical pad 9 and is matched with the concave spherical pad 9. When the press pressurizes the upper punch 1, the concave spherical pad 9 is matched with the convex spherical pad 10, and when the upper punch 1 receives an offset load force, the concave spherical pad 9 can deviate in the convex spherical pad 10, so that the offset load force is counteracted, the damage to the non-magnetic steel guard ring forging 3 caused by the offset load force is reduced, and the non-magnetic steel guard ring forging 3 cannot be reinforced to a target size.
In one embodiment, the upper punch 1 and the lower punch 2 are each of a truncated cone-like structure with a diameter gradually increasing from the inside to the outside. In the embodiment, the inner holes of the end heads of the non-magnetic steel guard ring forging 3 are respectively in inclined surface contact with the upper punch 1 and the lower punch 2. The tightness and stability between the punch and the nonmagnetic guard ring forging can be improved, and the disassembly after cold deformation strengthening is facilitated.
In one embodiment, the upper punch 1 is provided with a first limiting hole 11, the first end of the upright post 4 is fixedly arranged on the lower punch 2, and the second end of the upright post 4 is matched with the first limiting hole 11. In the embodiment, a closed space is formed among the non-magnetic steel guard ring forging 3, the upper punch 1, the lower punch 2 and the upright post reducing 4, so that the stress area of liquid is reduced, and the using pressure is reduced.
In one embodiment, the length of the vertical column reducing 4 is greater than the sum of the lengths of the upper punch 1 and the lower punch 2, the convex spherical pad 10 is provided with a second limiting hole 12 communicated with the outside, the second limiting hole 12 is adapted to the vertical column reducing 4, the concave spherical pad 9 is provided with a third limiting hole 13, the third limiting hole 13 is adapted to the vertical column reducing 4, the third limiting hole 13 enables the first limiting hole 11 to be communicated with the second limiting hole 12, and the upper punch 1 can be enabled to be better vertically pressed down to prevent offset.
When the press is pressed down, the convex spherical pad 10, the concave spherical pad 9 and the upper punch 1 are pressed down simultaneously, and the vertical reduction column 4 passes through the first limiting hole 11 and the third limiting block 13 and enters the second limiting hole 12.
In one embodiment, the liquid medium in the external liquid supply device is water, which does not corrode the mold during cold deformation strengthening process, does not pollute the environment, and has low cost.
The workflow of this embodiment is as follows:
the staff passes the inner ring of the non-magnetic steel guard ring forging 3 through the reduction column 4 and installs the inner ring on the lower punch 2, so that the end head of the non-magnetic steel guard ring forging 3 contacts with the inclined surface of the lower punch 2. When the upper punch 1 is installed, the vertical reduction column 4 is aligned with the limit groove 11, the end head of the non-magnetic steel guard ring forging 3 is contacted with the inclined plane of the upper punch 1, and the die installation is completed.
When the non-magnetic steel guard ring forging piece is used, a worker firstly places the die under the press, then opens the one-way valve 7 and the high-pressure pump 6, so that the liquid adding cavity 8 is filled with water, and at the moment, the two ends of the non-magnetic steel guard ring forging piece 3 are respectively attached to the upper punch 1 and the lower punch 2, and are in a hard contact state. The diameter of the non-magnetic steel guard ring forging 3 is enlarged through the pressure conducted by the high-pressure pump 6, the friction force is greatly reduced, the liquid supplementing is sufficient, and the non-magnetic steel guard ring forging 3 cannot be in a horn shape. The working personnel control the press and the high-pressure pump 6 to pressurize at the same time, the diameter of the non-magnetic steel guard ring forging 3 is increased along with the pressure increase in the liquid adding cavity 8 through water conduction pressure, the height of the non-magnetic steel guard ring forging is shortened until the process target size is reached, and the cold deformation strengthening effect is achieved. The utility model combines the advantages of external fluid infusion and internal pressurization, reduces the friction force between the forging piece and the die and uniformly bears the force. The full fluid infusion can be obtained in the whole strengthening process, and the forming shape of the non-magnetic steel guard ring forging 3 is ensured.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a non-magnet steel shroud ring forging combination formula hydraulic pressure bloated cold deformation reinforces mould which characterized in that: including upper punch, lower punch, subtract stand, high-pressure water pipe, high-pressure pump and check valve, the upper punch with the lower punch sets up in the both sides of non-magnet steel shroud ring forging, and mutual symmetry, the upper punch the lower punch with form the liquid feeding chamber between the non-magnet steel shroud ring forging, it installs to subtract the stand on the lower punch, the high-pressure water pipe is installed subtract the inside of stand, and will liquid feeding chamber and outside liquid feeding device intercommunication, the water inlet and the outside water piping connection of high-pressure pump, the delivery port of high-pressure pump with high-pressure water pipe, the check valve is installed on the high-pressure water pipe.
2. The non-magnetic steel guard ring forging combined hydraulic expansion type cold deformation strengthening die as set forth in claim 1, wherein: the device also comprises a concave spherical surface pad and a convex spherical surface pad, wherein the concave spherical surface pad is arranged at the top of the upper punch, and the convex spherical surface pad is embedded into the concave spherical surface pad and is adaptive to the concave spherical surface pad.
3. The non-magnetic steel guard ring forging combined hydraulic expansion type cold deformation strengthening die as set forth in claim 1, wherein: the upper punch and the lower punch are of round table-shaped structures with diameters gradually increasing from inside to outside.
4. The non-magnetic steel guard ring forging combined hydraulic expansion type cold deformation strengthening die as set forth in claim 2, wherein: the upper punch is provided with a first limiting hole, the first end of the vertical reduction column is fixedly arranged on the lower punch, and the second end of the vertical reduction column is adaptive to the first limiting hole.
5. The non-magnetic steel guard ring forging combined hydraulic expansion type cold deformation strengthening die is characterized in that: the length of subtracting the stand is greater than the upper punch with the length of lower punch is summed, open on the protruding sphere pad have with external intercommunication the second spacing hole, the second spacing hole with subtract the stand suits, open on the concave sphere pad have the third spacing hole, the third spacing hole with subtract the stand suits, the third spacing hole makes first spacing hole with the second spacing hole intercommunication.
6. The non-magnetic steel guard ring forging combined hydraulic expansion type cold deformation strengthening die as set forth in claim 1, wherein: the liquid medium in the external liquid supply device is water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321378686.9U CN220161048U (en) | 2023-06-01 | 2023-06-01 | Combined hydraulic expansion type cold deformation strengthening die for non-magnetic steel retaining ring forge piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321378686.9U CN220161048U (en) | 2023-06-01 | 2023-06-01 | Combined hydraulic expansion type cold deformation strengthening die for non-magnetic steel retaining ring forge piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220161048U true CN220161048U (en) | 2023-12-12 |
Family
ID=89059944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321378686.9U Active CN220161048U (en) | 2023-06-01 | 2023-06-01 | Combined hydraulic expansion type cold deformation strengthening die for non-magnetic steel retaining ring forge piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220161048U (en) |
-
2023
- 2023-06-01 CN CN202321378686.9U patent/CN220161048U/en active Active
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