CN112427559A - Method for forming ingot cover of covered spindle - Google Patents
Method for forming ingot cover of covered spindle Download PDFInfo
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- CN112427559A CN112427559A CN202011136506.7A CN202011136506A CN112427559A CN 112427559 A CN112427559 A CN 112427559A CN 202011136506 A CN202011136506 A CN 202011136506A CN 112427559 A CN112427559 A CN 112427559A
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- 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
- B21D41/02—Enlarging
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- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to a spindle cover forming method for coating a spindle. The ingot cover forming method comprises the following steps: dividing the pipe fitting into an upper section, a middle section and a lower section, flaring the upper section to form a lower part of the ingot cover, necking the lower section, and after flaring and necking, making the wall thickness of the middle section larger than that of the upper section or the lower section; and secondly, keeping the shape of the flared upper section to be positioned, punching the middle section and the necked lower section, and forming the upper part of the ingot cover, thereby finishing the molding of the ingot cover. The forming method adopts the pipe fitting as the blank, has simpler forming and manufacturing, has no material waste, and effectively ensures the quality of the final finished product ingot cover.
Description
Technical Field
The invention relates to the field of textile machinery, in particular to a method for forming a spindle cover of a coating spindle.
Background
The covering silk machine is used for covering processing equipment which takes spandex, terylene and other fibers as core silk and covering silk, can produce common unidirectional covering silk and can also produce full-covering and spandex-consuming double-reverse covering silk, the produced covering silk is widely applied to the fields of weaving, knitting, woven belts and the like, and the elasticity, the hand feeling, the drapability and the wrinkle resistance of a woven product can be effectively improved. The spindle is an important component in the covering yarn machine, and the spindle cover is one part of the spindle and plays an important role in the working stability of the spindle. For example, the utility model is named as a filament double-twist nail rotor device in the publication of chinese patent publication No. CN207483946U, publication No. 2018, 6 months and 12 days, and the disclosed spindle cover structure is the currently common spindle cover style. This kind of traditional processing of ingot lid adopts casting machine-shaping generally, or adopts solid round steel stamping forming, and the shortcoming of casting processing lies in that manufacturing procedure is many, and machining efficiency is lower, and the quality is uneven, and difficult mass production processing, and adopts solid round steel stamping forming, and is higher to required equipment requirement, and the machine-shaping quality is difficult to guarantee, and the ingot lid takes time and takes material, the scheduling problem that breaks often appears. For this reason, there is a need for an improvement of the existing ingot cap molding method.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a spindle cover forming method for coating a spindle in the field, so that the technical problems of complex processing procedure, higher cost, lower efficiency, time and material consumption and difficult quality guarantee of the existing similar forming method are solved. The purpose is realized by the following technical scheme.
A ingot cover forming method for coating a spindle is characterized in that a pipe fitting is manufactured to form the ingot cover, the ingot cover is provided with a columnar upper part and a cylindrical lower part, and the middle part of the upper part is provided with a through hole; the key point is that the forming method comprises the following steps:
the method comprises the following steps of firstly, dividing the pipe fitting into an upper section, a middle section and a lower section, flaring the upper section to form a lower part of the ingot cover, necking the lower section, and after flaring and necking, enabling the wall thickness of the middle section to be larger than that of the upper section or the lower section.
And secondly, keeping the shape of the flared upper section to be positioned, punching the middle section and the necked lower section, and forming the upper part of the ingot cover, thereby finishing the molding of the ingot cover.
The forming method adopts the pipe fitting as the blank, has simpler forming and manufacturing, has no material waste, and effectively ensures the quality of the final finished product ingot cover.
The first step is realized through a flaring punch and a necking die holder, an inner hole of the necking die holder is divided into an upper hole section and a lower hole section, the upper hole section is a die hole matched with the cylindrical outer diameter of the lower part of the ingot cover, and the lower hole section is a necking hole; one part of the punch part of the flaring punch is a forming part matched with the cylindrical inner hole of the lower part of the ingot cover, and the other part of the punch part of the flaring punch is a guide part matched with the necking hole of the necking die holder to finish the lower-section necking of the step; the flaring punch is provided with a sealing surface which forms a plane seal to the upper end of the die hole of the necking die holder when the flaring punch is in punch press fit with the necking die holder. By the aid of the punch forming method, forming efficiency is high, and forming quality is stable.
The inner hole of the necking die seat further comprises a limiting hole located at the bottom of the necking hole, and a module for limiting the end part of the lower section of the necking die in the first step is arranged in the limiting hole. The end face of the lower section of the pipe fitting is effectively limited through the module, and the end face of the necking is ensured to be flat.
The step two is realized through a forming punch and a forming die holder, the main body of the end part of the punch of the forming punch is a plane, a raised cylindrical head is arranged in the middle of the plane, and the outer diameter of the cylindrical head is matched with the size of a through hole on the upper part of the ingot cover; the forming die holder is provided with a die cavity matched with the ingot cover, namely the die cavity comprises a lower die cavity matched with the upper section of the flared opening in the step I and an upper die cavity matched with the upper part of the ingot cover; the upper section after flaring is downward and is matched and positioned with the lower die cavity, and the lower section after necking is upward and corresponds to the forming punch; when the forming punch is in punch press fit with the forming die holder, the end plane of the forming punch forms a seal on the upper end of the upper die cavity of the forming die holder. Similarly, the second step adopts punch forming, so that the forming efficiency is high, and the quality is stable.
The forming die holder is divided into an inner die holder and an outer die holder which are matched in a sleeved mode, the outer die holder forms the outer diameter part of the ingot cover, and the inner die holder forms the inner side face of the ingot cover. Adopt combination formula shaping die holder, conveniently adjust according to the shaping pattern, realize the diversification of shaping pattern to and the maintenance is changed to the convenience, reduce cost of maintenance.
The top of the inner die base of the forming die base is provided with a positioning hole matched with the cylindrical head of the forming punch, and the middle part of the inner die base is provided with an exhaust hole for communicating the upper end and the lower end. Through this structure, stamping forming's stability and reliability are guaranteed.
The upper portion of ingot lid is cylindricly, and the lower part of ingot lid is cylindricly, and the cylindric external diameter size of ingot lid upper portion is greater than the cylindric external diameter size of lower part, and the through-hole internal diameter size of ingot lid is less than the cylindric internal diameter size of ingot lid lower part. The structure is one of the structural styles of the common ingot cover.
The cylindric hole of ingot lid lower part is the gradual change hole that diminishes and set up by supreme down. Through this structure, make things convenient for the assembly of spindle lid to use.
And in the first step, the wall thickness of the upper section after flaring is smaller than that of the lower section after necking. Through this structure, guarantee the reliable and stable of ingot cover shaping quality.
And the pipe fitting is heated or acid-washed and phosphated to be molded to manufacture the ingot cover. By heating the pipe, press forming is facilitated.
The invention has the advantages that the ingot cover is manufactured and formed by using the pipe fitting, the cost investment is lower, the forming process is simpler and more efficient, the forming quality of the ingot cover can be effectively ensured, and the method is suitable for being used as a forming method of various ingot cover structures or the improvement of the similar forming method.
Drawings
FIG. 1 is a first structural view, partially in section, of a first embodiment of the present invention.
FIG. 2 is a schematic diagram of a first step of the present invention, partially sectioned.
FIG. 3 is a schematic cross-sectional view of a semi-finished ingot cap after completion of step one of the present invention.
FIG. 4 is a schematic sectional view of the forming die holder of the present invention.
FIG. 5 is a cross-sectional structural diagram of the present invention in a state of step two, partially cut away.
FIG. 6 is a sectional structural diagram of the second step of the present invention, partially sectioned.
Fig. 7 is a schematic cross-sectional view of the ingot cap after step two of the present invention is completed.
Fig. 8 is a perspective view of the ingot cap of fig. 7.
Fig. 9 is a schematic view of an improved structure of the necking die holder of the present invention.
FIG. 10 is a schematic view of an improved molding die holder of the present invention.
The sequence numbers and names in the figure are: 1. the steel pipe, 2, flaring punch, 201, forming part, 202, guide part, 203, sealing surface, 3, necking die seat, 301, die hole, 302, necking hole, 4, module, 5, forming die holder, 501, inner die holder, 502, outer die holder, 503, upper die cavity, 504, lower die cavity, 505, locating hole, 506, exhaust hole, 6, forming punch, 601, plane, 602, column head, 7, ingot cover, 701, upper part, 702, lower part, 703, through hole.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1 to 8, the forming method of the present invention will be described below by taking the steel pipe 1 as an example to form the ingot cap 7. The upper part 701 of the ingot cover is cylindrical, a through hole 703 is formed in the middle of the upper part, the lower part 702 of the ingot cover is cylindrical, the outer diameter of the cylindrical part of the ingot cover is larger than the outer diameter of the cylindrical part of the ingot cover, and the inner diameter of the through hole of the ingot cover is smaller than the inner diameter of the cylindrical part of the ingot cover. The cylindric hole of ingot lid lower part is the gradual change hole that diminishes and set up by supreme down.
The equipment adopted by the forming method mainly comprises stamping equipment, and specifically comprises two sets of equipment, wherein one set of equipment is pre-forming stamping equipment, the other set of equipment is forming stamping equipment, the pre-forming stamping equipment comprises a flaring punch 2 and a necking die holder 3, and the forming stamping equipment comprises a forming punch 6 and a forming die holder 5. The forming method mainly comprises the following steps:
firstly, stamping and forming a semi-finished ingot cover, dividing the steel pipe 1 into an upper section 101, a middle section 102 and a lower section 103, flaring the upper section to form a lower section 702 of the ingot cover 7, necking the lower section, and after flaring and necking, the wall thickness of the middle section is larger than that of the upper section or the lower section.
And step two, punch forming the ingot cover 7, keeping the shape of the flared upper section 101 in a positioning mode, punching the middle section 102 and the necked lower section 103, and forming an upper part 701 of the ingot cover, so that the ingot cover is formed.
The specific forming process comprises the following steps: the first step is realized by the flaring punch 2 and the necking die holder 3, the inner hole of the necking die holder is divided into an upper hole section and a lower hole section, the upper hole section is a die hole 301 matched with the cylindrical outer diameter of the lower part 702 of the ingot cover 7, and the lower hole section is a necking hole 302. One part of the punch part of the flaring punch is a forming part 201 matched with the cylindrical inner hole of the lower part of the ingot cover, and the other part of the punch part of the flaring punch is a guide part 202 matched with the necking hole of the necking die holder to finish the necking of the lower section 103 in the first step. The flaring punch is provided with a sealing surface 203 which forms a plane seal to the upper end of the die hole of the necking die holder when the flaring punch is in punch press fit with the necking die holder. During punching, the steel pipe 1 is only required to be arranged in the necking die holder, the initial outer diameter of the steel pipe is between the aperture of the upper hole section and the aperture of the lower hole section of the necking die holder, and the inner hole of the steel pipe, which is positioned in the necking die holder, is not exposed; when the flaring punch punches the steel pipe, flaring is formed on the upper section 101 of the steel pipe, and the shape formed after flaring is the lower part 702 of the ingot cover 7; the lower section of the steel pipe forms a smooth necking under the extrusion action of the necking hole and the guide part of the flaring punch, the wall thickness of the middle section 102 of the steel pipe after necking is larger than that of the lower section, and the wall thickness of the lower section is larger than that of the upper section. In order to ensure the smoothness of the end face of the lower section of the steel pipe, a section of limiting hole is further arranged below the necking hole of the necking die seat, and a module 4 for limiting the end part of the lower section subjected to necking in the step I is arranged in the limiting hole. And the demoulding operation of the semi-finished ingot cover in the first step is realized through the lifting module.
The second step is realized by the forming punch 6 and the forming die holder 5, the main body of the end part of the punch of the forming punch is a plane 601, the middle part of the plane is provided with a raised cylindrical head 602, and the outer diameter of the cylindrical head is matched with the size of the through hole 703 of the upper part 701 of the ingot cover 7. The forming die holder is provided with a die cavity matched with the ingot cover, namely the die cavity comprises a lower die cavity 504 matched with the flared upper section 101 in the first step and an upper die cavity 503 matched with the upper part 701 of the ingot cover. The forming die holder is divided into an inner die holder 501 and an outer die holder 502 which are matched in a sleeved mode, the outer diameter portion of the outer die holder forming spindle cover is the inner side face of the inner die holder forming spindle cover. The top of the inner die holder is provided with a positioning hole 505 matched with the cylindrical head of the forming punch, and the middle of the inner die holder is provided with an exhaust hole 506 for communicating the upper end and the lower end. When the forming punch is in punch press fit with the forming die holder, the end plane of the forming punch forms a seal on the upper end of the upper die cavity of the forming die holder. During punching, the upper section 101 of the steel pipe 1 subjected to flaring in the first step is downwards matched and positioned with the lower die cavity, the opening of the lower section 103 of the steel pipe subjected to flaring is upwards sleeved with the cylindrical head of the forming punch, and the caliber of the opening of the lower section is preferably not smaller than the outer diameter of the cylindrical head. And then the forming punch carries out stamping deformation on the middle section 102 and the lower section of the steel pipe in the forming die holder, and the upper section and the middle section of the stamped steel pipe are deformed into the upper part of the ingot cover, so that the forming and manufacturing of the ingot cover are completed. The inner die holder is lifted, so that the demolding operation of the ingot cover is realized.
In the stamping process of the first step and the second step, in order to ensure the stability of the stamping forming of the steel pipe 1, reduce the resistance in cold drawing and reduce the abrasion of a die, the steel pipe is formed to manufacture the ingot cover after acid pickling phosphorization or heating.
As shown in fig. 9 and 10, in order to reduce the loss cost of the necking die holder 3 and the forming die holder 5, the necking die holder and the forming die holder may be designed as an inner-outer combined die holder, and the inner easily worn part is detachable and replaceable relative to the outer non-worn part, thereby reducing the cost of using the device. Likewise, the flaring punch 2 and the forming punch 6 may also be designed to be end removable to reduce the cost of damage replacement.
The above description is intended to illustrate the technical means of the present invention, and not to limit the technical scope of the present invention. Modifications of the invention which are obvious to those skilled in the art in view of the prior art are also within the scope of the invention as claimed.
Claims (10)
1. A ingot cover forming method for coating a spindle is characterized in that a pipe fitting is manufactured to form an ingot cover (7), the ingot cover is provided with a columnar upper part (701) and a cylindrical lower part (702), and the middle part of the upper part is provided with a through hole (703); the method is characterized by comprising the following steps:
dividing the pipe fitting into an upper section (101), a middle section (102) and a lower section (103), flaring the upper section to form a lower section (702) of the ingot cover, necking the lower section, and after flaring and necking, enabling the wall thickness of the middle section to be larger than that of the upper section or the lower section;
and secondly, keeping the shape of the flared upper section to be positioned, punching the middle section and the necked lower section, and forming an upper part (701) of the ingot cover (7), thereby completing the forming of the ingot cover.
2. The method of claim 1, wherein said step one is carried out by a flaring punch (2) and a necking die holder (3), the inner hole of said necking die holder is divided into an upper hole section and a lower hole section, the upper hole section is a die hole (301) matching the cylindrical outer diameter of the lower portion (702) of said ingot cover (7), and the lower hole section is a necking hole (302); one part of the punch part of the flaring punch is a forming part (201) matched with the cylindrical inner hole of the lower part of the ingot cover, and the other part of the punch part of the flaring punch is a guide part (202) matched with the necking hole of the necking die holder to finish the necking of the first lower section (103) of the step; the flaring punch is provided with a sealing surface (203) which forms a plane seal to the upper end of the die hole of the necking die holder when the flaring punch is in punch press fit with the necking die holder.
3. The method of claim 2, wherein the inner hole of the die seat (3) further comprises a limiting hole at the bottom of the necking hole (302), and a module (4) for limiting the end of the lower section (103) after the necking step is performed is arranged in the limiting hole.
4. The method of claim 1 or 2, wherein the second step is performed by a forming punch (6) and a forming die holder (5), the end body of the forming punch is a plane (601), the middle part of the plane is provided with a raised cylindrical head (602), and the outer diameter of the cylindrical head is matched with the size of the through hole (703) of the upper part (701) of the ingot cover (7); the forming die holder is provided with a die cavity matched with the ingot cover, namely the die cavity comprises a lower die cavity (504) matched with the flared upper section (101) in the step I and an upper die cavity (503) matched with the upper part of the ingot cover; the flared upper section is downward and matched with the lower die cavity for positioning, and the port of the necked lower section (103) is upward and corresponds to the cylindrical head of the forming punch; when the forming punch is in punch press fit with the forming die holder, the end plane of the forming punch forms a seal on the upper end of the upper die cavity of the forming die holder.
5. The method of claim 4, wherein the forming mold base (5) is divided into an inner mold base (501) and an outer mold base (502) which are in sleeved fit, the outer mold base forms an outer diameter portion of the ingot cover (7), and the inner mold base forms an inner side surface of the ingot cover.
6. The method of claim 5, wherein the top of the inner mold base (501) of the forming mold base (5) is provided with a positioning hole (505) matching with the cylindrical head (602) of the forming punch (6), and the middle of the inner mold base is provided with an exhaust hole (506) for communicating the upper and lower ends.
7. The method of claim 1, wherein the upper portion (701) of the ingot cover (7) is cylindrical, the lower portion (702) of the ingot cover is cylindrical, the outer diameter of the upper portion of the ingot cover is larger than the outer diameter of the lower portion of the ingot cover, and the inner diameter of the through hole (703) of the ingot cover is smaller than the inner diameter of the lower portion of the ingot cover.
8. The method of claim 7, wherein the cylindrical inner bore of the lower portion (702) of the cover (7) is a tapered bore which is tapered from bottom to top.
9. The method of claim 1, wherein the wall thickness of the upper flared section (101) is smaller than the wall thickness of the lower reduced section (103) in the first step.
10. Method for forming a cap for a covered spindle according to claim 1, characterized in that said tube is heated or acid-washed phosphated and formed to form said cap (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011136506.7A CN112427559B (en) | 2020-10-22 | 2020-10-22 | Method for forming ingot cover of covered spindle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011136506.7A CN112427559B (en) | 2020-10-22 | 2020-10-22 | Method for forming ingot cover of covered spindle |
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| CN112427559A true CN112427559A (en) | 2021-03-02 |
| CN112427559B CN112427559B (en) | 2022-09-16 |
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| CN202011136506.7A Active CN112427559B (en) | 2020-10-22 | 2020-10-22 | Method for forming ingot cover of covered spindle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458248A (en) * | 2021-05-07 | 2021-10-01 | 中国科学院金属研究所 | Necking and flaring mixed forming method for conical barrel part with straight barrel |
| WO2023105883A1 (en) * | 2021-12-06 | 2023-06-15 | 株式会社三五 | Method for molding cylindrical body having tapered part |
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| JPH11159669A (en) * | 1997-11-28 | 1999-06-15 | Stainless Pipe Kogyo Kk | Manufacture of pipe joint and pipe joint obtained by this method of manufacture |
| CN1886210A (en) * | 2003-11-28 | 2006-12-27 | 威齐格及弗兰克有限责任公司 | Method for producing a coupling on a pipe and device for producing said coupling |
| CN101927301A (en) * | 2010-08-10 | 2010-12-29 | 赵铎 | Cold compression necking process of reducing short tube |
| CN103056214A (en) * | 2013-01-08 | 2013-04-24 | 重庆大学 | Numerical control incremental forming based die-less forming method for special-shaped pipe fittings |
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| CN204234602U (en) * | 2014-10-21 | 2015-04-01 | 镇江利奥排气技术有限公司 | A kind of high accuracy horn mouth pipe fitting forming frock |
| CN104624687A (en) * | 2014-12-09 | 2015-05-20 | 张怀法 | Cold extrusion forming method of spinning machine spindle feet |
| CN108655290A (en) * | 2018-03-27 | 2018-10-16 | 浙江美联智能科技有限公司 | The spindle support processing molding method of cladding spindle |
| US20190193136A1 (en) * | 2016-09-07 | 2019-06-27 | Thyssenkrupp Steel Europe Ag | Method and Device for Producing Formed, in Particular Flanged, Sheet Metal Components |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11159669A (en) * | 1997-11-28 | 1999-06-15 | Stainless Pipe Kogyo Kk | Manufacture of pipe joint and pipe joint obtained by this method of manufacture |
| CN1886210A (en) * | 2003-11-28 | 2006-12-27 | 威齐格及弗兰克有限责任公司 | Method for producing a coupling on a pipe and device for producing said coupling |
| CN101927301A (en) * | 2010-08-10 | 2010-12-29 | 赵铎 | Cold compression necking process of reducing short tube |
| CN103056214A (en) * | 2013-01-08 | 2013-04-24 | 重庆大学 | Numerical control incremental forming based die-less forming method for special-shaped pipe fittings |
| CN203737745U (en) * | 2014-02-27 | 2014-07-30 | 浙江杰德管业有限公司 | Mold for necking die |
| CN203887061U (en) * | 2014-06-13 | 2014-10-22 | 内蒙古第一机械集团有限公司 | Universal necking-down and flaring continuous die |
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| CN104624687A (en) * | 2014-12-09 | 2015-05-20 | 张怀法 | Cold extrusion forming method of spinning machine spindle feet |
| US20190193136A1 (en) * | 2016-09-07 | 2019-06-27 | Thyssenkrupp Steel Europe Ag | Method and Device for Producing Formed, in Particular Flanged, Sheet Metal Components |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458248A (en) * | 2021-05-07 | 2021-10-01 | 中国科学院金属研究所 | Necking and flaring mixed forming method for conical barrel part with straight barrel |
| WO2023105883A1 (en) * | 2021-12-06 | 2023-06-15 | 株式会社三五 | Method for molding cylindrical body having tapered part |
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| Publication number | Publication date |
|---|---|
| CN112427559B (en) | 2022-09-16 |
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