EP1689539A1 - Verfahren zur herstellung einer muffe an einem rohr und vorrichtung zur herstellung dieser muffe - Google Patents
Verfahren zur herstellung einer muffe an einem rohr und vorrichtung zur herstellung dieser muffeInfo
- Publication number
- EP1689539A1 EP1689539A1 EP04765466A EP04765466A EP1689539A1 EP 1689539 A1 EP1689539 A1 EP 1689539A1 EP 04765466 A EP04765466 A EP 04765466A EP 04765466 A EP04765466 A EP 04765466A EP 1689539 A1 EP1689539 A1 EP 1689539A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe end
- pipe
- expanded
- wall thickness
- tube
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 5
- 230000008878 coupling Effects 0.000 title abstract 4
- 238000010168 coupling process Methods 0.000 title abstract 4
- 238000005859 coupling reaction Methods 0.000 title abstract 4
- 239000010949 copper Substances 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000640 Fe alloy Inorganic materials 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000004323 axial length Effects 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000003754 machining Methods 0.000 claims 1
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 2
- 229910000990 Ni alloy Inorganic materials 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
Definitions
- the invention relates to a method for producing a sleeve on a pipe, preferably made of copper or steel or Cu, Ni, Fe alloys, by preferably multi-stage or single-stage widening of the pipe end with a large diameter jump, with an expanding tool axially in the pipe end is introduced and a device for producing such a sleeve.
- the sleeves at the pipe ends are produced by preferably gradually widening the pipe section.
- the wall thickness is thinned when the pipe is expanded. It has z. B. shown that for a pipe with a nominal diameter> 50 mm and a wall thickness of 2.7 mm, the wall thickness after a two-stage expansion is only 2.4 mm.
- the pipe end is usually additionally flanged inwards in order to have a sufficient hold for the sealing elements behind the flanged edge when pipes are later joined together.
- the fitting is then subjected to the greatest stress, which in the worst case can lead to leaks.
- leaks can occur if, owing to the thin wall thickness, the sleeve is bent open at the point designated by "A" in the attached FIG. 1 a larger wall thickness of the tube was chosen from the outset, so for the normal non-expanded parts the tube had to be oversized to a certain extent so that it could withstand the necessary loads in the expanded part of the tube with the smaller wall thickness caused by the expansion.
- the invention is therefore based on the object of proposing a method and a device for producing a sleeve on a pipe, in which an increase in the wall thickness of the pipes used can be dispensed with.
- the proposal according to the invention provides, in particular together with the last expansion stage or in a separate work step, to carry out an upsetting process at the end of the tube, the inside diameter being predetermined with the expansion tool.
- the outer diameter is limited by the upsetting tool and the outer die that surrounds the pipe end when it is expanded.
- the device according to the invention for producing a sleeve at a pipe end according to the described method consists of claim 5
- an expanding tool that can be inserted axially into the pipe end with one or more conical and cylindrical parts that determine the later inside diameter of the pipe end, - One or more mold jaws with conical and cylindrical parts, which determine the later outer diameter of the pipe end and -
- An essentially cylindrical compression device the smallest inner diameter with the necessary clearance corresponds to the maximum outer diameter of the expanding tool and which has an essentially radially extending annular approach which can be pressed axially against the end face of the pipe end for the upsetting process.
- the upsetting device essentially consists of a cylindrical tube with an inner annular recess for receiving the expanded tube end, which is pressed axially against the end face of the tube end.
- the inner diameter of the recess and the mold jaws are preferably matched to one another in the area in which there is to be an increase in the wall thickness in such a way that the desired wall thickness can be achieved depending on the intended stroke or the relative movement between the upsetting device and the mold jaws.
- Fig. 1 shows in cross section the shape of a sleeve produced according to the invention on a pipe 1.
- Fig. 2 shows in section the essential parts of the device according to the invention in the process of expansion and compression of the pipe end.
- the finished pipe 1 shown in Fig. 1 has the wall thickness dl, which corresponds to the wall thickness of the original pipe material.
- the tube 1 After a two-stage expansion, the tube 1 has a first conical part 5, an adjoining first cylindrical part 7 with a wall thickness d7 reduced in accordance with the degree of expansion compared to d1, a second conical part 6, an adjoining second cylindrical part 8 and one inwardly bent flanged edge 9.
- the second cylindrical part 8 has a Wall thickness d8, which has been increased to the required level by the upsetting process according to the invention before the flange 9 is produced.
- the wall thickness d8 should be at least as large as the wall thickness d7. It has even proven to be advantageous to bring the wall thickness d8 down to the wall thickness of dl.
- the multi-stage expanding tool 2 has already been pressed axially into the pipe end.
- the shape of the sleeve with the parts 5 to 8 is formed on the inside by the parts 5 'to 8' of the expanding tool 2 and on the outside by the parts 5 "to 8" of the mold jaw 3.
- the compression device 4 consisting essentially of a cylindrical tube is pressed axially against the tube end with the inner lugs 10, the relative movement between the mold jaws 3 and compression device 4 being max. can have the hub X.
- the upsetting device 4 has an annular recess which is formed by the cylindrical part 11 and the extension 10.
- the invention may be sufficient only in the area of the axial length of the cylindrical part 11 to make the required increase in the wall thickness by the upsetting process, but it may also be advantageous, at the same time the section of the cylindrical part 8 which is encompassed by the mold jaws 3, to be used accordingly to thicken the upsetting process.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Pipe Accessories (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10356317 | 2003-11-28 | ||
PCT/EP2004/010591 WO2005061148A1 (de) | 2003-11-28 | 2004-09-22 | Verfahren zur herstellung einer muffe an einem rohr und vorrichtung zur herstellung dieser muffe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1689539A1 true EP1689539A1 (de) | 2006-08-16 |
EP1689539B1 EP1689539B1 (de) | 2011-06-29 |
Family
ID=34683278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04765466A Active EP1689539B1 (de) | 2003-11-28 | 2004-09-22 | Verfahren zur herstellung einer muffe an einem rohr und vorrichtung zur herstellung dieser muffe |
Country Status (8)
Country | Link |
---|---|
US (1) | US7770429B2 (de) |
EP (1) | EP1689539B1 (de) |
JP (1) | JP2007512140A (de) |
CN (1) | CN100384563C (de) |
AT (1) | ATE514498T1 (de) |
BR (1) | BRPI0416941A (de) |
DE (1) | DE102004045981A1 (de) |
WO (1) | WO2005061148A1 (de) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080061555A1 (en) * | 2005-02-16 | 2008-03-13 | Colin Knight | Flared cone fitting |
JP4906849B2 (ja) * | 2006-05-15 | 2012-03-28 | 株式会社小松製作所 | 鋼管の拡管成形方法および鋼管の拡管成形装置 |
DE102007024357B3 (de) * | 2007-05-24 | 2008-10-09 | Witzig & Frank Gmbh | Verfahren und Vorrichtung zur Herstellung von Rohranschlüssen |
US7942456B2 (en) * | 2008-01-04 | 2011-05-17 | Cerro Flow Products, Inc. | Fluid conduits with integral end fittings and associated methods of manufacture and use |
US7987690B2 (en) * | 2008-01-04 | 2011-08-02 | Cerro Flow Products Llc | Fluid conduits with integral end fittings and associated methods of manufacture and use |
DE102009007303B4 (de) * | 2009-02-03 | 2023-05-04 | Viega Technology Gmbh & Co. Kg | Fitting für dickwandige Rohre |
JP5641702B2 (ja) * | 2009-03-27 | 2014-12-17 | 株式会社小松製作所 | 鋼管の拡管成形方法および拡管成形装置 |
DE102009024198B4 (de) * | 2009-06-08 | 2012-05-10 | Mag Ias Gmbh | Verfahren zur Herstellung von Pressfittings und Werkzeug dafür |
EP2392418A1 (de) * | 2010-06-01 | 2011-12-07 | AB Alvenius Industrier | Metallrohr zum Leiten eines Mittels, Rohranordnung und Verfahren zur Herstellung eines Metallrohrs |
EP2428289B1 (de) * | 2010-09-08 | 2013-04-03 | Crowntec Fitness MFG., Ltd. | Verfahren zur Herstellung von Rohrhülsen für Trampoline |
CN103317013B (zh) * | 2012-12-31 | 2015-03-04 | 上海奥林汽车配件有限公司 | 一种扩胀收口成型模具 |
CN103170542B (zh) * | 2013-04-12 | 2015-09-30 | 柳州力通车用空调有限公司 | 管接头胀接的方法 |
CN103157725B (zh) * | 2013-04-12 | 2015-11-04 | 柳州力通车用空调有限公司 | 管接头胀紧成型模 |
CN103157726B (zh) * | 2013-04-12 | 2015-09-02 | 柳州力通车用空调有限公司 | 管接头胀接胀套模 |
CN104175066B (zh) * | 2014-07-07 | 2016-05-25 | 西安交通大学 | 一种超长管头部法兰的轴向推入聚料与镦粗复合工艺 |
CN104492987A (zh) * | 2014-10-21 | 2015-04-08 | 镇江利奥排气技术有限公司 | 一种高精度喇叭口管件成型工装 |
DE102015110998B4 (de) | 2015-07-08 | 2023-03-02 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren zur Herstellung einer Endrohrblende oder eines Rohrelements und Vorrichtung zur Herstellung der Endrohrblende oder des Rohrelements |
CN105057470B (zh) * | 2015-09-18 | 2017-06-27 | 河源市北美通电子科技有限公司 | 一种加工治具和加工方法 |
CN105290243B (zh) * | 2015-11-20 | 2017-08-08 | 绵阳市川金机械制造有限公司 | 一种转向管柱的生产工艺 |
CN105436333A (zh) * | 2016-01-05 | 2016-03-30 | 天津市久盛通达科技有限公司 | 一种钢管易口机 |
JP6256668B1 (ja) | 2016-03-11 | 2018-01-10 | 新日鐵住金株式会社 | 差厚鋼管の製造方法および差厚鋼管 |
JP6521914B2 (ja) * | 2016-07-26 | 2019-05-29 | トヨタ自動車株式会社 | 製造方法、スタビライザの製造方法およびスタビライザ製造用金型 |
CN107214259A (zh) * | 2017-07-14 | 2017-09-29 | 熊卓成 | 车用异形管的胀型冲头及胀型方法 |
CN108655290B (zh) * | 2018-03-27 | 2020-01-10 | 浙江美联智能科技有限公司 | 包覆锭子的锭座加工成型方法 |
CN111299979B (zh) * | 2020-03-24 | 2021-11-23 | 重庆志齐机械制造有限公司 | 一种冷挤压活塞管的制备工艺 |
CN112427559B (zh) * | 2020-10-22 | 2022-09-16 | 浙江美联智能科技有限公司 | 包覆锭子的锭盖成型方法 |
CN113926870B (zh) * | 2021-10-09 | 2024-05-14 | 东莞市坤元金属制品有限公司 | 一种自行车轴心加工方法 |
CN114833286B (zh) * | 2022-04-27 | 2024-04-30 | 太原理工大学 | 一种薄壁管端法兰扩口-镦粗复合成形装置及方法 |
Family Cites Families (16)
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FR2129921B1 (de) | 1971-03-22 | 1974-08-19 | Besson Louis | |
JPS5252664A (en) * | 1975-10-25 | 1977-04-27 | Toshiba Corp | Detector for liquid level |
JPS549152A (en) * | 1977-06-23 | 1979-01-23 | Mitsuboshi Seisakusho | Method of making stairinggheaddpipe |
US4295357A (en) * | 1978-08-28 | 1981-10-20 | General Tire & Rubber Co. | Apparatus for making metal outers and inners |
JPS60199531A (ja) * | 1984-03-23 | 1985-10-09 | Fujiki Kosan Kk | ステ−ブ冷却水管の接続部の製作方法及びこれに用いる器具 |
JPS63149038A (ja) * | 1986-12-15 | 1988-06-21 | Nippon Steel Corp | 外アツプセツト・プレスによる鋼管端部の加工方法 |
US4768369A (en) * | 1987-11-13 | 1988-09-06 | Johnson Russell H | Method of forming a pipe fitting |
JPH0386326A (ja) * | 1989-08-29 | 1991-04-11 | Showa Alum Corp | 押出し成形パイプ材の端部加工方法 |
DE4410146C2 (de) * | 1993-10-23 | 2000-06-15 | Witzig & Frank Gmbh | Vorrichtung zur Herstellung von Pressfittings |
CN1047113C (zh) * | 1994-03-07 | 1999-12-08 | 东北重型机械学院南校 | 一种螺旋焊管成型挤压装置 |
FR2759483B1 (fr) * | 1997-02-12 | 1999-04-30 | Zircotube | Procede de fabrication d'un tube-guide d'un assemblage de combustible d'un reacteur nucleaire, mandrin de formage d'un tube-guide et tube-guide obtenu |
DE19757021A1 (de) * | 1997-12-20 | 1999-07-15 | Federal Mogul Wiesbaden Gmbh | Lagerbuchse und Verfahren zu ihrer Herstellung |
DE10031989B4 (de) | 2000-06-30 | 2007-08-16 | Witzig & Frank Gmbh | Verfahren und Vorrichtung zur Herstellung von Pressfittings aus Stahl, insbesondere Edelstahl |
DE10064376A1 (de) * | 2000-12-21 | 2002-06-27 | Schmittersysco Gmbh | Rohr-Umformverfahren und -Umformvorrichtung zum Wandaufdicken |
GB0128667D0 (en) * | 2001-11-30 | 2002-01-23 | Weatherford Lamb | Tubing expansion |
US7140226B2 (en) * | 2002-08-05 | 2006-11-28 | Giant Manufacturing Co., Ltd. | Methods for making a bicycle frame part having a disproportionally enlarged end section |
-
2004
- 2004-09-22 WO PCT/EP2004/010591 patent/WO2005061148A1/de active Application Filing
- 2004-09-22 EP EP04765466A patent/EP1689539B1/de active Active
- 2004-09-22 CN CNB2004800353370A patent/CN100384563C/zh not_active Expired - Fee Related
- 2004-09-22 US US10/580,859 patent/US7770429B2/en active Active
- 2004-09-22 BR BRPI0416941-7A patent/BRPI0416941A/pt not_active IP Right Cessation
- 2004-09-22 AT AT04765466T patent/ATE514498T1/de active
- 2004-09-22 DE DE102004045981A patent/DE102004045981A1/de not_active Ceased
- 2004-09-22 JP JP2006540195A patent/JP2007512140A/ja active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2005061148A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2007512140A (ja) | 2007-05-17 |
BRPI0416941A (pt) | 2007-02-13 |
DE102004045981A1 (de) | 2005-07-21 |
EP1689539B1 (de) | 2011-06-29 |
US20070256467A1 (en) | 2007-11-08 |
CN100384563C (zh) | 2008-04-30 |
US7770429B2 (en) | 2010-08-10 |
WO2005061148A1 (de) | 2005-07-07 |
ATE514498T1 (de) | 2011-07-15 |
CN1886210A (zh) | 2006-12-27 |
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