CN104353735A - 0Cr17Ni4Cu4Nb multi-way pipe forming method and sidewall flanging die employed by same - Google Patents
0Cr17Ni4Cu4Nb multi-way pipe forming method and sidewall flanging die employed by same Download PDFInfo
- Publication number
- CN104353735A CN104353735A CN201410632117.1A CN201410632117A CN104353735A CN 104353735 A CN104353735 A CN 104353735A CN 201410632117 A CN201410632117 A CN 201410632117A CN 104353735 A CN104353735 A CN 104353735A
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- CN
- China
- Prior art keywords
- sidewall
- blank
- way pipe
- formpiston
- pipe fitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
- B21C37/286—Making tube fittings for connecting pipes, e.g. U-pieces starting from sheet material
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention belongs to the technical field of 0Cr17Ni4Cu4Nb material forming, and particularly relates to a 0Cr17Ni4Cu4Nb multi-way pipe forming method and a sidewall flanging die employed by the same. The problem that such a part cannot be integrally formed, and is required to be welded after being separately formed is solved; the fatigue resistance of the part is greatly improved. The method specifically comprises the following steps of adopting a plate as an original blank; machining the original blank into a barrel-shaped blank; pre-bulging the bottom and the sidewall of the barrel-shaped blank; forming holes in the bottom of the barrel-shaped blank, and forming holes in the middle part of the sidewall of the barrel-shaped blank; flanging the bottom of the blank; flanging the sidewall of the blank by adopting the sidewall flanging die; removing allowance. The sidewall flanging die comprises a die core, a male die set, a female die, a positioning sleeve, a guide sleeve, an outer sleeve and a lower template.
Description
Technical field
The invention belongs to 0Cr17Ni4Cu4Nb technical field of material formation, particularly relate to the sidewall flanging die of a kind of 0Cr17Ni4Cu4Nb material multi-way pipe fitting forming method and employing.
Background technology
0Cr17Ni4Cu4Nb material is the stainless steel material that under a kind of normal temperature, plasticity is very poor, shaping difficulty is larger, multi-way pipe fitting is baroque stepped tubular part, its outside diameter is less than 100mm, sidewall is the many places flange of 20 ~ 30mm with diameter, due to 0Cr17Ni4Cu4Nb material at normal temperatures percentage elongation only have about 10%, therefore, adopt the shaping difficulty of multi-way pipe fitting of 0Cr17Ni4Cu4Nb material very large, prior art generally adopts a point method for body formed rear welding, post welding distortion is large, flange is circle not, use impact very large on subsequent components, and affect welding quality and safety in utilization.
Summary of the invention
For prior art Problems existing, the invention provides the sidewall flanging die of a kind of 0Cr17Ni4Cu4Nb material multi-way pipe fitting forming method and employing, the sidewall flanging die of this forming method and employing solve such part cannot global formation, the difficult problem of body formed rear welding must be divided; Machining accuracy improves an order of magnitude, and working (machining) efficiency doubles, and decrease inevitable weld seam in existing method, part anti-fatigue ability increases substantially.
To achieve these goals, the present invention adopts following technical scheme: a kind of 0Cr17Ni4Cu4Nb material multi-way pipe fitting forming method, and concrete steps are as follows:
Step one: adopt sheet material as original blank;
Step 2: original blank is prepared into tubular blank;
Step 3: pre-bulging is carried out to the bottom of tubular blank and sidewall;
Step 4: in the bottom opening of tubular blank, has several equally distributed holes in the middle part of the sidewall of tubular blank;
Step 5: carry out flange to bottom blank;
Step 6: adopt sidewall flanging die to carry out flange to the sidewall of blank, form multi-way pipe fitting semi-finished product;
Step 7: multi-way pipe fitting semi-finished product are removed surplus, obtains final finished.
Described sidewall flanging die, comprise core rod, formpiston group, former, positioning sleeve, fairlead, overcoat and lower bolster, lower bolster is provided with and ejects hole, overcoat is fixed on the top of lower bolster, core rod is made up of pressing plate and core body, pressing plate is arranged on the top of overcoat, the top of the lower bolster in overcoat is provided with positioning sleeve, formpiston group, fairlead and former are arranged in positioning sleeve, former is provided with the first groove, the profile of the first groove is corresponding with the outer mold surface of multi-way pipe fitting, fairlead is arranged in the first groove of former, the sidewall of fairlead is provided with several pilot holes, the hole one_to_one corresponding corresponding with the areole of multi-way pipe fitting of described pilot hole and the first groove, formpiston group is made up of several mutually isostructural formpistons, and the madial wall of several formpistons forms inner conical surface, the outer end of each formpiston is all through the pilot hole of fairlead, be arranged in the first groove hole corresponding with the areole of multi-way pipe fitting, the core body of described core rod is inverted pyramidal structures, the second groove be connected with pilot hole is provided with at the middle part of fairlead, the bottom of core body is arranged on the bottom of the second groove through formpiston group, the madial wall of several formpistons contacts with the lateral wall of core body.
The Split type structure that it is die joint that described former is set to place, the center horizontal plane of multi-way pipe fitting areole.
In described positioning sleeve, between positioning sleeve and lower bolster, be provided with angled slide block.
Described positioning sleeve is set to the Split type structure along axisymmetrical.
Bottom each formpiston of described formpiston group, be provided with projection, bottom the pilot hole of described fairlead, be provided with locating slot, described projection is arranged in locating slot.
Beneficial effect of the present invention:
The present invention has prepared tubular blank with the level by repeatedly load-unload, is achieved the global formation of 0Cr17Ni4Cu4Nb material multi-way pipe fitting by sidewall flanging die; The product of processing meets design drawing requirement, reaches the manufacture level of external same kind of parts.
The present invention is applicable to the difficult shaping stainless steel materials such as specific 0Cr17Ni4Cu4Nb, solve the difficult problem that minor diameter multi-way pipe fitting cannot realize global formation, based on the reasonable combination of conventional molding processes method, solving multi-way pipe fitting divides body formed inevitable low precision, post welding distortion large and can not meet the problems such as instructions for use, improves interchangeability and the service life of multi-way pipe fitting.
The present invention has been successfully applied in the batch production of certain aero-engine interface lasso, and result of use is fine; In recent years, because 0Cr17Ni4Cu4Nb material starts progressively to expand use in aero-engine, the development of the present invention to other part adopting same type of material has guidance and reference; Along with the continuous increase of 0Cr17Ni4Cu4Nb material sheet-metal formed part application quantity in aircraft engine parts, directive significance of the present invention is more outstanding, establishes good basis by for applying of this material.
Accompanying drawing explanation
Fig. 1 is the structural representation of original blank;
Fig. 2 is the structural representation of tubular blank;
Fig. 3 is the structural representation of the tubular blank after pre-bulging;
Fig. 4 is the top view of Fig. 3;
Fig. 5 is the structural representation of the blank after perforate;
Fig. 6 is the structural representation of the blank after the flange of bottom;
Fig. 7 is the half-finished structural representation of multi-way pipe fitting;
Fig. 8 is the structural representation of multi-way pipe fitting finished product;
Fig. 9 is the structural representation of sidewall flanging die of the present invention;
Figure 10 is the structural representation of the fairlead of sidewall flanging die of the present invention;
Figure 11 is the sectional view of Figure 10;
Figure 12 is the structural representation of the former of sidewall flanging die of the present invention;
Figure 13 is the structural representation of a formpiston of sidewall flanging die formpiston group of the present invention;
Figure 14 is the side view of Figure 13;
Figure 15 is the top view of Figure 13;
In figure, 1--core rod, 11--pressing plate, 12--core body, 2--guide finger, 3--formpiston group, 31--formpiston, 32-inner conical surface, 33--is protruding, 34-straight tube face, 4--fairlead, 41--second groove, 42--pilot hole, 43--locating slot, 5--former, 51--first groove, 6--positioning sleeve, 7--overcoat, 8--angled slide block, 9--screw, 10--lower bolster, 101--ejects hole.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Fig. 1 ~ 15, a kind of 0Cr17Ni4Cu4Nb material multi-way pipe fitting forming method, concrete steps are as follows:
Step one: adopt circular sheet material as original blank, the structure of original blank as shown in Figure 1;
Step 2: preparation tubular blank: adopted by original blank repeatedly load-unload process to be prepared into tubular blank with the level, form flange at the opening part of tubular blank, the structure of tubular blank is as shown in Figure 2;
Step 3: the flange removing tubular blank, for ensureing that tubular blank flange can realize and reach designing requirement, before flange, adopt soft male mould forming mode to carry out pre-bulging to the bottom of tubular blank and sidewall, object be in advance by material of main part to treating that turn-up portion bit flow is supplemented, compensated part flange amount, avoids breaking because reaching the forming materials limit during flange; The structure of the tubular blank after pre-bulging as shown in Figure 3, Figure 4;
Step 4: in the bottom opening of tubular blank, several equally distributed holes are had in the middle part of the sidewall of tubular blank, perforate object is for follow-up flange is prepared, sharp limit rounding is carried out to the bore edges after perforate, object reduces stress to concentrate, improve the flange limit, the structure of the blank after perforate as shown in Figure 5;
Step 5: carry out flange to bottom blank, object is that the structure of the blank after the flange of bottom is as shown in Figure 6 in order to use sidewall flanging die to prepare;
Step 6: adopt sidewall flanging die to carry out flange to the sidewall of blank, the sidewall thickness after flange meets general tolerance requirement, and the half-finished structure of the multi-way pipe fitting after flange as shown in Figure 7;
Step 7: multi-way pipe fitting semi-finished product are removed surplus, and obtain final finished, this finished size meets detail of design requirement, and the structure of multi-way pipe fitting finished product as shown in Figure 8.
Described sidewall flanging die, comprise core rod 1, formpiston group 3, fairlead 4, former 5, positioning sleeve 6, overcoat 7 and lower bolster 10, lower bolster 10 is provided with and ejects hole 101, hydraulic press push rod is made to act on overcoat 7 by ejecting hole 101 by ejecting force, overcoat 7 is fixed on the top of lower bolster 10 by screw 9, overcoat 7, for wrapping up positioning sleeve 6, makes it can not open because of stressed in turn-up process, core rod 1 is made up of pressing plate 11 and core body 12, core rod 1 is for transferring the horizontal force of formpiston group 3 bulging to by hydraulic press power vertically downward, pressing plate 11 is arranged on the top of overcoat 7, the top of the lower bolster 10 in overcoat 7 is provided with positioning sleeve 6, positioning sleeve 6 is cylindrical shell at the bottom of open-topped band, formpiston group 3, fairlead 4 and former 5 are arranged in positioning sleeve 6, former 5 keeps its axial location by positioning sleeve 6, former 5 is for controlling flange diameter, former 5 is provided with the first groove 51, the profile of the first groove 51 is corresponding with the outer mold surface of multi-way pipe fitting, fairlead 4 is arranged in the first groove 51 of former 5, the sidewall of fairlead 4 is provided with five pilot holes 42, the hole one_to_one corresponding corresponding with the areole of multi-way pipe fitting of described pilot hole 42 and the first groove 51, fairlead 4 moves downward for limiting formpiston group 3, formpiston group 3 is made up of five mutually isostructural formpistons 31, mobile space is reserved in order to give the core body 12 of core rod 1, inner conical surface 32 is formed at the top of the madial wall of five formpistons 31, straight tube face 34 is formed at the bottom of madial wall, the outer end of each formpiston 31 is all through the pilot hole 42 of fairlead 4, be arranged in the first groove 51 hole corresponding with the areole of multi-way pipe fitting, formpiston group 3 is for carrying out flange to blank sidewall, the core body 12 of described core rod 1 is inverted pyramidal structures, the second groove 41 be connected with pilot hole 42 is provided with at the middle part of fairlead 4, the bottom of core body 12 is arranged on the bottom of the second groove 41 through formpiston group 3, the top of the madial wall of five formpistons 31 contacts with the lateral wall of core body 12, core body 12 can move up and down along the top of the madial wall of formpiston 31, and promotion formpiston group 3 outwards moves horizontally when moving down.
For the part after ensureing flange can take out, the Split type structure that it is die joint that described former 5 is set to place, the center horizontal plane of multi-way pipe fitting areole, and be connected by guide finger 2 between Split type structure, prevent the movement producing circumferential relative position between Split type structure.
In described positioning sleeve 6, between positioning sleeve 6 and lower bolster 10, be provided with angled slide block 8, formpiston group 3, fairlead 4, former 5 and positioning sleeve 6, by hydraulic press push rod jack-up, eject, for pickup after flange by angled slide block 8 from overcoat 7.
For ensureing that formpiston group 3, fairlead 4 and former 5 can take out in positioning sleeve 6, described positioning sleeve 6 is set to the Split type structure along axisymmetrical.
For preventing formpiston group 3 from rotating in the horizontal direction, bottom each formpiston 31 of described formpiston group 3, be provided with protruding 33, bottom the pilot hole 42 of described fairlead 4, be provided with locating slot 43, described protruding 33 are arranged in locating slot 43.
Adopt sidewall flanging die to carry out flange to the sidewall of blank described in step 6, specific operation process is as follows:
Steps A: the pressing plate 11 of the core rod 1 of sidewall flanging die is fixed on the top shoe of hydraulic press, lower bolster 10 is fixed on the lower platform of hydraulic press, lower bolster 10 eject hole 101 and hydraulic press to eject hole corresponding, the top shoe of hydraulic press rises, together rise with moving-mould-core 1, with its below isolation of components, now sidewall flanging die is in open mode;
Step B: hydraulic press push rod rises, promote angled slide block 8, and then formpiston group 3, fairlead 4, former 5 and positioning sleeve 6 are ejected from overcoat 7, open positioning sleeve 6, former 5 respectively, formpiston group 3 is arranged in the pilot hole 42 of fairlead 4, and the outer end of formpiston group 3 is arranged on the inside of the pilot hole 42 of fairlead 4;
Step C: the blank after the flange of bottom is enclosed within the lateral wall of fairlead 4, and the areole of blank is corresponding with formpiston group 3, puts into former 5 at the blank that fairlead 4 and formpiston group 3 are housed, and is then placed in positioning sleeve 6 by former 5;
Step D:, positioning sleeve 6 is placed in overcoat 7, on angled slide block 8, hydraulic press push rod falls after rise, makes positioning sleeve 6 and angled slide block 8 fall back on lower bolster 10;
Step e: the top shoe of hydraulic press falls, band moving-mould-core 1 falls, and promotes formpiston group 3 outwards movement in the horizontal direction, carry out flange to the sidewall of blank by the core body 12 of core rod 1;
Step F: repeat steps A, takes out multi-way pipe fitting semi-finished product.
Claims (6)
1. a 0Cr17Ni4Cu4Nb material multi-way pipe fitting forming method, is characterized in that concrete steps are as follows:
Step one: adopt sheet material as original blank;
Step 2: original blank is prepared into tubular blank;
Step 3: pre-bulging is carried out to the bottom of tubular blank and sidewall;
Step 4: in the bottom opening of tubular blank, has several equally distributed holes in the middle part of the sidewall of tubular blank;
Step 5: carry out flange to bottom blank;
Step 6: adopt sidewall flanging die to carry out flange to the sidewall of blank, form multi-way pipe fitting semi-finished product;
Step 7: multi-way pipe fitting semi-finished product are removed surplus, obtains final finished.
2. the sidewall flanging die of 0Cr17Ni4Cu4Nb material multi-way pipe fitting forming method employing according to claim 1, it is characterized in that described sidewall flanging die, comprise core rod, formpiston group, former, positioning sleeve, fairlead, overcoat and lower bolster, lower bolster is provided with and ejects hole, overcoat is fixed on the top of lower bolster, core rod is made up of pressing plate and core body, pressing plate is arranged on the top of overcoat, the top of the lower bolster in overcoat is provided with positioning sleeve, formpiston group, fairlead and former are arranged in positioning sleeve, former is provided with the first groove, the profile of the first groove is corresponding with the outer mold surface of multi-way pipe fitting, fairlead is arranged in the first groove of former, the sidewall of fairlead is provided with several pilot holes, the hole one_to_one corresponding corresponding with the areole of multi-way pipe fitting of described pilot hole and the first groove, formpiston group is made up of several mutually isostructural formpistons, and the madial wall of several formpistons forms inner conical surface, the outer end of each formpiston is all through the pilot hole of fairlead, be arranged in the first groove hole corresponding with the areole of multi-way pipe fitting, the core body of described core rod is inverted pyramidal structures, the second groove be connected with pilot hole is provided with at the middle part of fairlead, the bottom of core body is arranged on the bottom of the second groove through formpiston group, the madial wall of several formpistons contacts with the lateral wall of core body.
3. sidewall flanging die according to claim 2, is characterized in that the described former Split type structure that to be set to place, the center horizontal plane of multi-way pipe fitting areole be die joint.
4. sidewall flanging die according to claim 2, is characterized in that in described positioning sleeve, between positioning sleeve and lower bolster, is provided with angled slide block.
5. sidewall flanging die according to claim 2, is characterized in that described positioning sleeve is set to the Split type structure along axisymmetrical.
6. sidewall flanging die according to claim 2, it is characterized in that being provided with projection bottom each formpiston of described formpiston group, bottom the pilot hole of described fairlead, be provided with locating slot, described projection is arranged in locating slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410632117.1A CN104353735B (en) | 2014-11-10 | 2014-11-10 | The sidewall flanging die of a kind of 0Cr17Ni4Cu4Nb material multi-way pipe fitting forming method and employing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410632117.1A CN104353735B (en) | 2014-11-10 | 2014-11-10 | The sidewall flanging die of a kind of 0Cr17Ni4Cu4Nb material multi-way pipe fitting forming method and employing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104353735A true CN104353735A (en) | 2015-02-18 |
| CN104353735B CN104353735B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410632117.1A Active CN104353735B (en) | 2014-11-10 | 2014-11-10 | The sidewall flanging die of a kind of 0Cr17Ni4Cu4Nb material multi-way pipe fitting forming method and employing |
Country Status (1)
| Country | Link |
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| CN (1) | CN104353735B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109513798A (en) * | 2019-01-17 | 2019-03-26 | 江阴中南重工有限公司 | Integral type ball-type multi-way pipe fitting and preparation method thereof |
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| JPS59144531A (en) * | 1983-02-08 | 1984-08-18 | Tokuda Seisakusho Ltd | Method and apparatus for manufacturing long cross tube |
| JPH09103827A (en) * | 1995-10-06 | 1997-04-22 | Yamada Seisakusho Co Ltd | Formation of lateral hole on tube member |
| CN101288885A (en) * | 2007-04-20 | 2008-10-22 | 北京中航兴亚现代技术有限公司 | Effective technique for increasing roundness of the flanging hole of the barrel |
| US20080271512A1 (en) * | 2004-12-16 | 2008-11-06 | Km Rustfri Skive A/S | Method for Making a Cold-Worked Article |
| CN103350142A (en) * | 2013-07-18 | 2013-10-16 | 上海电机学院 | Method for manufacturing water chamber end socket |
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2014
- 2014-11-10 CN CN201410632117.1A patent/CN104353735B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59144531A (en) * | 1983-02-08 | 1984-08-18 | Tokuda Seisakusho Ltd | Method and apparatus for manufacturing long cross tube |
| JPH09103827A (en) * | 1995-10-06 | 1997-04-22 | Yamada Seisakusho Co Ltd | Formation of lateral hole on tube member |
| US20080271512A1 (en) * | 2004-12-16 | 2008-11-06 | Km Rustfri Skive A/S | Method for Making a Cold-Worked Article |
| CN101288885A (en) * | 2007-04-20 | 2008-10-22 | 北京中航兴亚现代技术有限公司 | Effective technique for increasing roundness of the flanging hole of the barrel |
| CN103350142A (en) * | 2013-07-18 | 2013-10-16 | 上海电机学院 | Method for manufacturing water chamber end socket |
Non-Patent Citations (1)
| Title |
|---|
| 邹章照等: "冲压翻边在管接头型零件上的应用", 《模具工业》, no. 10, 28 October 1986 (1986-10-28), pages 12 - 16 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109513798A (en) * | 2019-01-17 | 2019-03-26 | 江阴中南重工有限公司 | Integral type ball-type multi-way pipe fitting and preparation method thereof |
| CN109513798B (en) * | 2019-01-17 | 2023-05-12 | 江阴中南重工有限公司 | Integrated spherical multi-way pipe fitting and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104353735B (en) | 2016-01-20 |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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