CN113770241A - Winding drum device and conical drum manufacturing method - Google Patents
Winding drum device and conical drum manufacturing method Download PDFInfo
- Publication number
- CN113770241A CN113770241A CN202110900342.9A CN202110900342A CN113770241A CN 113770241 A CN113770241 A CN 113770241A CN 202110900342 A CN202110900342 A CN 202110900342A CN 113770241 A CN113770241 A CN 113770241A
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- cylinder
- tapered
- blank
- foil
- welding
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000004804 winding Methods 0.000 title abstract description 11
- 239000011888 foil Substances 0.000 claims abstract description 33
- 238000003466 welding Methods 0.000 claims description 23
- 238000007493 shaping process Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000007772 electrode material Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D33/00—Special measures in connection with working metal foils, e.g. gold foils
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Storage Of Web-Like Or Filamentary Materials (AREA)
Abstract
The invention provides a winding drum device and a conical drum manufacturing method, wherein the winding drum device comprises a base, a support, a swing table, a core shaft and a flexible disk, the support and the swing table are arranged on the base, the flexible disk is arranged on the swing table and used for bearing foil, the core shaft is rotatably arranged on the support, the tail end of the core shaft can abut against the flexible disk to enable the flexible disk and the foil to be deformed, the swing table can drive the flexible disk to swing to adjust the angle, and the core shaft drives the foil and the flexible disk to rotate after rotating so as to wind the foil.
Description
Technical Field
The invention relates to the field of metal processing, in particular to a winding drum device and a conical drum manufacturing method.
Background
A traditional processing method of a conical supporting cylinder in an electron gun of a communication travelling wave tube is a spinning process, the spinning process is that after plastic deformation of foil is forced, required shapes and sizes are achieved through ductility of materials, the phenomenon of uneven wall thickness (difference is 0.03-0.05 mm at most) is easy to exist in the process, but along with the development of the communication travelling wave tube in the direction of miniaturization, high power, high frequency band, wide frequency band and high reliability, the influence of uneven wall thickness of the conical cylinder on the heat preservation effect in the electron gun is large, and the inter-polar distance and the electrical property of the whole tube are influenced.
Disclosure of Invention
The embodiment of the invention provides a winding drum device and a conical drum preparation method, and aims to solve the problem of uneven thickness of a conical drum wall in the related art.
According to an embodiment of the invention, a winding drum device is provided, which comprises a base, a support, a swing table, a mandrel and a flexible disk, wherein the support and the swing table are arranged on the base, the flexible disk is arranged on the swing table and is used for bearing foil, the mandrel is rotatably arranged on the support, the tail end of the mandrel can be abutted against the flexible disk to enable the flexible disk and the foil to be deformed, the swing table can drive the flexible disk to swing to adjust the angle, and the mandrel drives the foil and the flexible disk to rotate so as to wind the foil.
Further, the winding drum device further comprises an adjusting rod, the adjusting rod is in threaded connection with the support and abuts against the mandrel, and the adjusting rod is used for adjusting the position of the mandrel so that the mandrel is close to or far away from the floppy disk.
Further, the reel device further comprises a handle, and the handle is connected with the mandrel to drive the mandrel to rotate.
According to another embodiment of the present invention, there is provided a method of manufacturing a tapered cartridge, including:
s1: processing a metal foil into a blank, wherein the blank comprises a main body part and a plurality of protruding parts positioned on two opposite sides of the main body part;
s2: rolling the blank into a cone preform by a mandrel device as claimed in any one of claims 1 to 3;
s3: welding the conical cylinder prototype; and
s4: and heating and shaping the welded conical cylinder to form the conical cylinder.
Further, in S3, a welding mould is provided, the welding mould includes welding dabber, first blank pressing cover and second blank pressing cover, the welding dabber include first toper portion and connect in the first cylinder and the second cylinder at first toper portion both ends are located toper section of thick bamboo primary sample cover first cylinder, first toper portion and second cylinder, locate first blank pressing cover the position that toper section of thick bamboo primary sample is located first cylinder, locate second blank pressing cover the position that toper section of thick bamboo primary sample is located the second cylinder.
Further, welding seams are connected through resistance welding, the electrode material is a tungsten electrode, the voltage is set to be 150V, oxidation is prevented through an oxygen inhibitor in the process, and welding is achieved.
Further, in S5, a shaping mold is provided, where the shaping mold includes a shaping mandrel, a first necking die and a second necking die, the shaping mandrel includes a second tapered portion, and a third column and a fourth column connected to two ends of the second tapered portion, the third column, the second tapered portion and the fourth column are sleeved with a tapered cylinder sample, the first necking die is sleeved at a position where the tapered cylinder sample is located on the third column, and the second necking die is sleeved at a position where the tapered cylinder sample is located on the fourth column.
Further, placing the conical cylinder initial sample and the shaping mold in a vacuum furnace, setting the furnace temperature at 1100-1200 ℃, and keeping the temperature for 20 minutes.
Has the advantages that: compared with the prior art, the foil is rolled by the winding drum device, the defect of uneven wall thickness in spinning processing is overcome, the aim of ensuring the thickness uniformity of the wall of the conical support drum is fulfilled, the processed conical support drum is high in precision and good in forming effect, and the related technical requirements are met.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a top view of a spool apparatus of an embodiment of the present invention.
FIG. 2 is a side view of a tapered cartridge made by an embodiment of the present invention.
Figure 3 is a side view of a blank of an embodiment of the present invention.
FIG. 4 is a side view of a conical cartridge precursor of an embodiment of the present invention.
Fig. 5 is a side view of a welding die of an embodiment of the present invention.
Fig. 6 is a side view of a sizing die of an embodiment of the present invention.
In the figure: 1. a base; 2. a swing table; 3. a support; 4. a mandrel; 5. a floppy disk; 6. adjusting a rod; 7. a handle; 8. a tapered barrel; 9. a blank; 10. performing primary sample on the conical cylinder; 11. welding a mandrel; 12. a first blank holder sleeve; 13. a second blank holder sleeve; 14. a nut; 15. shaping the mandrel; 16. a first necking die; 17. and a second necking die.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Referring to fig. 1, an embodiment of the present invention provides a reel device, which includes a base 1, a bracket 3, a swing platform 2, a spindle 4, and a flexible disk 5. The support 3 and the swing platform 2 are arranged on the base 1. The flexible disk 5 is provided on the rocking stage 2. The floppy disk 5 is intended to carry foil. The mandrel 4 is rotatably arranged on the bracket 3. The end of the mandrel 4 can press against the floppy disk 5 to deform the floppy disk 5 and the foil. The swing table 2 can drive the flexible disk 5 to swing to adjust the angle, and the mandrel 4 rotates to drive the foil and the flexible disk 5 to rotate so as to roll the foil.
In the illustrated embodiment, the drum device further comprises an adjustment lever 6. The adjusting rod 6 is in threaded connection with the bracket 3 and abuts against the mandrel 4. The adjusting rod 6 is used for adjusting the position of the mandrel 4 so as to enable the mandrel 4 to be close to or far away from the floppy disk 5.
In the illustrated embodiment, the drum device further comprises a handle 7. The handle 7 is connected with the mandrel 4 to drive the mandrel 4 to rotate.
The reel device, when in use: place the foil on soft disc 5, guarantee that foil center and floppy 5 center are concentric, the distance between adjustment dabber 4 and the foil makes foil and floppy 5 warp simultaneously, through the angle of rocking 2 fine setting floppy 5 of platform, makes foil generating line and 4 generating lines of dabber coincidence, rotatory dabber 4 drives foil and floppy 5 and rotates simultaneously, reaches the fashioned mesh of foil toper section of thick bamboo system of rolling up.
Embodiments of the present invention provide a method of manufacturing a tapered cartridge to produce a tapered cartridge as shown in fig. 2.
The conical barrel preparation method comprises the following steps:
s1: referring to fig. 3, a metal foil is processed into a blank 9, where the blank 9 includes a main body portion and a plurality of protruding portions located at two opposite sides of the main body portion.
The main body part is in a fan ring shape. The plurality of convex parts are positioned on two sides of the main body part and are in a sawtooth shape.
S2: the blank 9 is rolled into a conical cone preform 10 by a mandrel device.
The winding method of the winding drum device comprises the following steps: place the foil on soft disc 5, guarantee that foil center and floppy 5 center are concentric, the distance between adjustment dabber 4 and the foil makes foil and floppy 5 warp simultaneously, through the angle of rocking 2 fine setting floppy 5 of platform, makes foil generating line and 4 generating lines of dabber coincidence, rotatory dabber 4 drives foil and floppy 5 and rotates simultaneously, reaches the fashioned mesh of foil toper section of thick bamboo system of rolling up.
S3: the conical can preform 10 is welded.
In this step, a welding die is provided, which includes a welding mandrel 11, a first binder sleeve 12, and a second binder sleeve 13. The welding mandrel 11 includes a first tapered portion, and a first column and a second column connected to both ends of the first tapered portion. The first column, the first tapered portion and the second column are sleeved with a tapered cylinder prototype 10. And sleeving the first blank pressing sleeve 12 on the part of the conical cylinder blank 10, which is positioned on the first cylinder. And sleeving a second edge pressing sleeve 13 on the part of the conical cylinder prototype 10, which is positioned on the second cylinder.
In at least one embodiment, the second binder sleeve 13 is also tightened against by a nut 14.
The welding seam is connected through resistance welding, the electrode material adopts a tungsten electrode, the voltage is set to be 150V, oxidation is prevented through an oxygen inhibitor in the process, and welding is achieved.
S5: and heating and shaping the welded conical barrel blank 10 to form the conical barrel 8.
In this step, a shaping mold is provided, which includes a shaping mandrel 15, a first necking die 16, and a second necking die 17. The shaping mandrel 15 includes a second tapered portion, and a third column and a fourth column connected to two ends of the second tapered portion. And sleeving the conical cylinder prototype 10 on the third column body, the second conical part and the fourth column body. And sleeving the first necking die 16 on the part of the conical cylinder prototype 10, which is positioned on the third column. And sleeving a second necking die 17 on the part of the conical barrel prototype 10, which is positioned on the fourth column.
In at least one embodiment, the fastening is also performed by a nut 14 against a second necking die 17.
And (3) placing the conical barrel initial sample 10 and the shaping mold in a vacuum furnace, setting the furnace temperature to be 1100-1200 ℃, and keeping the temperature for 20 minutes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a reel device, its characterized in that includes base, support, sways platform, dabber and floppy disk, the support reaches it locates to sway the platform the base, the floppy disk is located sway the platform, the floppy disk is used for bearing the foil, the dabber is rotationally located the support, the dabber end can support and press the floppy disk makes floppy disk and foil warp, it can drive the floppy disk and sway with angle of adjustment to sway the platform, thereby the dabber rotates the back and drives foil and floppy disk and rotate and roll up the foil system.
2. The reel device of claim 1, further comprising an adjustment lever threadably coupled to the bracket and abutting the spindle, the adjustment lever for adjusting the position of the spindle to move the spindle toward or away from the floppy disk.
3. The reel device of claim 1, further comprising a handle coupled to the spindle to drive the spindle in rotation.
4. A method of making a tapered cartridge, comprising:
s1: processing a metal foil into a blank, wherein the blank comprises a main body part and a plurality of protruding parts positioned on two opposite sides of the main body part;
s2: rolling the blank into a cone preform by a mandrel device as claimed in any one of claims 1 to 3;
s3: welding the conical cylinder prototype;
s4: and heating and shaping the welded conical cylinder to form the conical cylinder.
5. The tapered cylinder manufacturing method according to claim 4, wherein in S3, a welding mold is provided, the welding mold includes a welding mandrel, a first blank holder and a second blank holder, the welding mandrel includes a first tapered portion, and a first cylinder and a second cylinder connected to two ends of the first tapered portion, the first cylinder, the first tapered portion and the second cylinder are sleeved with a tapered cylinder blank, the first blank holder is sleeved at a position of the tapered cylinder blank on the first cylinder, and the second blank holder is sleeved at a position of the tapered cylinder blank on the second cylinder.
6. The method for manufacturing a tapered cylinder according to claim 5, wherein the weld is connected by resistance welding, the electrode material is a tungsten electrode, the voltage is set to 150V, and the welding is performed by preventing oxidation by an oxygen inhibitor during the process.
7. The method for preparing a tapered barrel according to claim 4, wherein in S4, a shaping mold is provided, the shaping mold comprises a shaping mandrel, a first necking die and a second necking die, the shaping mandrel comprises a second tapered portion, and a third column and a fourth column connected to two ends of the second tapered portion, the third column, the second tapered portion and the fourth column are sleeved with a tapered barrel sample, the first necking die is sleeved at a position where the tapered barrel sample is located on the third column, and the second necking die is sleeved at a position where the tapered barrel sample is located on the fourth column.
8. The method for preparing a tapered cylinder according to claim 7, wherein the tapered cylinder preform and sizing mold are placed in a vacuum furnace at a furnace temperature ranging from 1100 ℃ to 1200 ℃ for 20 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110900342.9A CN113770241B (en) | 2021-08-06 | 2021-08-06 | Winding drum device and conical drum preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110900342.9A CN113770241B (en) | 2021-08-06 | 2021-08-06 | Winding drum device and conical drum preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113770241A true CN113770241A (en) | 2021-12-10 |
| CN113770241B CN113770241B (en) | 2024-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202110900342.9A Active CN113770241B (en) | 2021-08-06 | 2021-08-06 | Winding drum device and conical drum preparation method |
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| CN (1) | CN113770241B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11226683A (en) * | 1998-02-17 | 1999-08-24 | Kadowaki Shiki Kogyosho:Kk | Container forming apparatus |
| RU2009124577A (en) * | 2009-06-29 | 2011-01-10 | Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательскиЙ и проектно-конструкторский и | METHOD FOR PRODUCING ALUMINUM FOIL AND BOBBIN FOR ITS WINDING |
| CN202129327U (en) * | 2011-03-24 | 2012-02-01 | 哈尔滨工程大学 | Rolling ball thermal spinning and shaping device for nickel-titanium shape memory alloy thin wall tube |
| CN103934365A (en) * | 2014-01-09 | 2014-07-23 | 中国第一汽车股份有限公司 | Submerged lubrication ironing die |
| CN103949550A (en) * | 2014-05-20 | 2014-07-30 | 哈尔滨工业大学 | Foil plate conical element variable blank holder force deep drawing-blanking composite forming device and method |
| CN105149459A (en) * | 2015-10-27 | 2015-12-16 | 中国南方航空工业(集团)有限公司 | Conical piece mold |
| CN207243179U (en) * | 2017-09-21 | 2018-04-17 | 深圳市合川医疗科技有限公司 | A kind of reel gauge |
| CN112756460A (en) * | 2021-01-27 | 2021-05-07 | 中国科学院高能物理研究所 | Superconducting cavity manufacturing method |
| CN113020423A (en) * | 2021-03-17 | 2021-06-25 | 哈尔滨工业大学 | Forming method of dissimilar metal laminated thin-wall cylindrical part |
-
2021
- 2021-08-06 CN CN202110900342.9A patent/CN113770241B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11226683A (en) * | 1998-02-17 | 1999-08-24 | Kadowaki Shiki Kogyosho:Kk | Container forming apparatus |
| RU2009124577A (en) * | 2009-06-29 | 2011-01-10 | Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательскиЙ и проектно-конструкторский и | METHOD FOR PRODUCING ALUMINUM FOIL AND BOBBIN FOR ITS WINDING |
| CN202129327U (en) * | 2011-03-24 | 2012-02-01 | 哈尔滨工程大学 | Rolling ball thermal spinning and shaping device for nickel-titanium shape memory alloy thin wall tube |
| CN103934365A (en) * | 2014-01-09 | 2014-07-23 | 中国第一汽车股份有限公司 | Submerged lubrication ironing die |
| CN103949550A (en) * | 2014-05-20 | 2014-07-30 | 哈尔滨工业大学 | Foil plate conical element variable blank holder force deep drawing-blanking composite forming device and method |
| CN105149459A (en) * | 2015-10-27 | 2015-12-16 | 中国南方航空工业(集团)有限公司 | Conical piece mold |
| CN207243179U (en) * | 2017-09-21 | 2018-04-17 | 深圳市合川医疗科技有限公司 | A kind of reel gauge |
| CN112756460A (en) * | 2021-01-27 | 2021-05-07 | 中国科学院高能物理研究所 | Superconducting cavity manufacturing method |
| CN113020423A (en) * | 2021-03-17 | 2021-06-25 | 哈尔滨工业大学 | Forming method of dissimilar metal laminated thin-wall cylindrical part |
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| CN113770241B (en) | 2024-01-05 |
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