US20080250838A1 - Method and device for producing metal rings - Google Patents

Method and device for producing metal rings Download PDF

Info

Publication number
US20080250838A1
US20080250838A1 US11/958,184 US95818407A US2008250838A1 US 20080250838 A1 US20080250838 A1 US 20080250838A1 US 95818407 A US95818407 A US 95818407A US 2008250838 A1 US2008250838 A1 US 2008250838A1
Authority
US
United States
Prior art keywords
profile
tube section
tube
mandrel
rings
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.)
Abandoned
Application number
US11/958,184
Other languages
English (en)
Inventor
Torsten Flugge
Erwin Kwasnitza
Lorenz Rinke
Herman Thau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoerbiger Synchron Technik GmbH and Co KG
Original Assignee
Hoerbiger Synchron Technik GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hoerbiger Synchron Technik GmbH and Co KG filed Critical Hoerbiger Synchron Technik GmbH and Co KG
Assigned to HOERBIGER SYNCHRONTECHNIK GMBH & CO. KG reassignment HOERBIGER SYNCHRONTECHNIK GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FLUGGE, TORSTEN, KWASNITZA, ERWIN, RINKE, LORENZ, THAU, HERMAN
Publication of US20080250838A1 publication Critical patent/US20080250838A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/761—Making machine elements elements not mentioned in one of the preceding groups rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups

Definitions

  • the present invention relates to a method and assembly for producing rings from a tube made of a metallic material, wherein the rings are provided with an axially continuous inner profile at their inner circumference and with a radial outer profile at their outer circumference.
  • Such a method is, for example, known from DE 102 19 441 C1.
  • the method described in DE 102 19 441 C1 serves to produce rings that are profiled inside and outside (e.g., rolling bearing rings and transmission rings) from tubular or solid materials, and in a state completely ready for grinding.
  • a radial outer profile can be formed by radial-axial-profile tube rolling.
  • a tube section is processed from the outside by using a rolling tool.
  • the flow of material generated therewith is influenced by a counterforce tool which acts on the processed tube section in an axial direction.
  • the flow of material may be controlled in axial and radial directions, such that the evading material may be involved in formation of the profile.
  • a radial inner profile may be formed simultaneously.
  • a method for producing rings from a metallic material wherein the rings are provided with an axially continuous inner profile at an inner circumference and with a radial outer profile at an outer circumference
  • the method comprises the steps of providing a tube having a tube section from which rings are to be produced; forming an inner profile of the tube section by swaging, wherein a first profile mandrel is arranged in the tube, the outer profile of the mandrel corresponds to the inner profile to be formed, and the tube section is processed from the outside by using a swaging tool; and forming a radial outer profile by rolling.
  • an assembly for producing rings from a metallic material comprising: a swaging device for forming an inner profile, wherein the swaging device has a first profile mandrel arranged in the tube and having an outer profile corresponding to the inner profile of rings to be formed, and wherein the swaging device includes a swaging tool which processes the tube section from outside in order to form a tube section being profiled inside; and a rolling device for forming the outer profile.
  • the axial inner profile of the rings can be produced at considerably lower costs, i.e. by swaging. Since the metallic material used for producing the rings is capable of flowing to a certain extent due to the rolling method used for producing the radial outer profile, the swaging method for producing the axial inner profile is generally applicable.
  • the term “swaging” has a broad meaning in this context, and includes all similar and alternative methods in which material is pressed into a profile of the profile mandrel by radial and/or axial pressure (e.g., intermittently, in some embodiments).
  • the axial inner profile produced in the manner described herein is surprisingly not influenced or is only slightly influenced in the subsequent rolling step for producing the radial outer profile, such that, in some cases, post-processing of the axial inner profile after the rolling step is not required.
  • the rings produced in the manners described and illustrated herein may in particular be shifting sleeves or clutch bodies, such as those used in transmissions.
  • the individual rings can be separated from the internally profiled tube section before the rolling step described above.
  • the flow of material is controlled possibly from both axial sides near the rolling tool.
  • the rolling step described above is performed at the internally profiled tube section, wherein the finished rings are subsequently cut off.
  • Handling of the worked product is advantageous in this context, since a large number of single parts is not generated until the rings are finished.
  • the tube is moved in an axial direction with respect to the swaging tool in the swaging step described above.
  • the axial inner profile may be formed in a continuous working step upon the tube section.
  • the outer profile of the first profile mandrel is shorter than the length of the tube section, wherein the first profile mandrel is supported in a floating fashion, and wherein the tube section is moved in the axial direction with respect to the first profile mandrel in the swaging step.
  • the length of the tube section at which the axial inner profile is formed in one piece can be configured comparatively long, such as 50 to 70 cm (20 to 28 in). However, it is also possible to form the tube section even longer, such as 2 m (6.6 ft) or more.
  • the utilizable portion of the basic tube can be considerably enlarged, since the length of the profiled tube section in relation to the length of the normally required clamping of the tube becomes larger.
  • the first profile mandrel is supported in an axial direction in the swaging step, and remains substantially stationary with respect to the swaging tool.
  • the profile mandrel is supported in a floating manner.
  • a support in the axial direction may be provided, such as in the direction of movement of the tube section with respect to the first profile mandrel.
  • a second profile mandrel is arranged in the tube section or ring in the rolling step described above.
  • the rolling step may be performed such that a flow of material does not affect the integrity of the already finished inner profile.
  • an axial counterforce acting on the tube section or the ring is generated in the rolling step (e.g., opposite to the direction of flow of the material caused by the rolling tools) in order to be able to control the flow of material in axial and/or radial directions.
  • radial elevations can be produced during the rolling of the radial outer profile, wherein the elevations exceed the outer diameter of the non-rolled tube.
  • a radially outward flow of material can be generated in order to form a radial outer profile having comparatively large differences between maximum and minimum outer diameters while affecting the already finished axial inner profiles as little as possible.
  • the outer profile of the first profile mandrel is approximately or at least as long as the tube section, wherein the first profile mandrel moves in an axial direction together with the tube or with respect to the swaging tool in the swaging step.
  • the axial inner profile is formed from outside by swaging tools by generating a flow of material into the radial outer profile of the profile mandrel.
  • no relative speed between the profile mandrel and the tube section exists, such that production accuracy can be very high.
  • the shape of the radial inner profile changes slightly after the swaging at the profile mandrel, in particular if the infeed speed is not optimally adjusted.
  • the outer profile of the first profile mandrel is shorter than the length of the tube section, wherein the first profile mandrel is supported in a floating manner with respect to the tube.
  • a counterforce tool can be used, wherein the counterforce tool includes an abutting section with which an axial counterforce acting on the tube section or the ring can be generated opposite to the direction of the flow of material caused by the rolling tools, in order to control the flow of material in axial and/or radial directions.
  • the counterforce tool can be formed integrally with the second profile mandrel, in some embodiments.
  • a separating device for separating individual rings from the tube section can be utilized.
  • a separate device such as a turning tool, a milling tool, a grinding tool, a saw, and the like, for radially cutting off individual tubes.
  • the separating device can be arranged in front of the rolling device in order to supply individual rings profiled only at their inner circumference to the rolling device.
  • the separating device can be arranged at or behind the rolling device in order to cut off individual rings from the tube section, wherein each ring is already profiled at its inner circumference as well as at its outer circumference.
  • FIG. 1 shows a cylindrical tube made of a metallic material, which is suitable as a basic workpiece for the production method of the invention
  • FIG. 2 is a schematic longitudinal sectional view of a swaging device of a production assembly according to an embodiment of the present invention
  • FIG. 3 shows a perspective view of a tube section with axial inner profile produced in the swaging device of FIG. 2 ;
  • FIG. 4 is a schematic longitudinal sectional view of a rolling device of a production assembly according to an embodiment of the present invention.
  • FIG. 5 is a schematic longitudinal sectional view of an alternative embodiment of a rolling device of a production assembly according to an embodiment of the present invention
  • FIG. 6 is a schematic longitudinal sectional view of an alternative embodiment of a swaging device for a production assembly according to an embodiment of the present invention.
  • FIG. 7 is a plan view of a clutch body produced according to an embodiment of the present invention.
  • FIG. 8 is a sectional view along line VIII-VIII of FIG. 7 .
  • a cylindrical tube as a basic workpiece for the production method is generally designated with reference numeral 10 .
  • the basic tube 10 is non-profiled at its inner circumference as well as at its outer circumference, and is made of a metallic material suitable for being processed in a swaging device and a rolling device.
  • the metallic material is in any case capable of flowing to a certain extent. In some embodiments, the material can be heated during processing.
  • the tube 10 will be reshaped into a plurality of rings each having an axial inner profile at an inner circumference and a radial outer profile at an outer circumference, such as for shifting sleeves for transmissions.
  • FIG. 2 shows a schematic longitudinal sectional view of a swaging device 12 in a production assembly according to an embodiment of the present invention.
  • the swaging device 12 comprises a swaging tool 14 with swaging jaws 16 acting from radially outside of the tube 10 in a manner generally known to those skilled in the art.
  • the swaging device 12 is used to generate an axial inner profile of the basic tube 10 , such as a toothed inner profile.
  • a first profile mandrel 20 is supported in the swaging device 12 .
  • the profile mandrel 20 comprises a section being comparably short in an axial direction, wherein the section includes an outer profile 22 of the mandrel 20 .
  • the outer profile 22 has a shape corresponding to the inner profile which is to be generated in the tube 10 .
  • profile mandrel 20 shown in FIG. 2 comprises a conical section 24 arranged in an axial feed direction 26 in front of the outer profile 22 of the mandrel 20 .
  • the profile mandrel 20 illustrated in FIG. 2 is supported afloat within the tube 10 (i.e., it remains substantially stationary with respect to the swaging tool 14 ).
  • the tube 10 is inserted in the axial direction 26 with respect to the swaging device 12 .
  • the profiling of the inner circumference of the tube 10 is performed within the swaging tool 14 .
  • the profile mandrel 20 may be supported in the axial direction by an optional supporting device 27 , in particular for avoiding deadlocks and the like.
  • a tube section 28 of the tube 10 is provided with the axial inner profile, wherein the tube section 28 is considerably longer than the outer profile 22 of the mandrel 20 .
  • the tube section 28 may have a length of 50 or 60 cm (20 to 25 in), and can even have a length of 2 m (6.6 ft) or more.
  • the tube section 28 can be indefinitely long.
  • a major part (i.e., tube section 28 ) of the basic tube 10 can be profiled.
  • generally no profiling or a non-usable profiling is generated at either or both ends of the tube 10 , due to a bearing point.
  • FIG. 3 shows a tube section 30 produced in the swaging device 12 , wherein the tube section 30 is provided with an axial inner profile 32 .
  • the internally profiled tube section 30 may now be supplied to a rolling device for producing a radial outer profile.
  • a rolling device for producing a radial outer profile.
  • the separation may be performed, for example, by cut-off turning or in any other suitable manner.
  • FIG. 4 shows a schematic longitudinal sectional view of a rolling device 40 of a production assembly according to an embodiment of the present invention.
  • the rolling device 40 is arranged downstream of the swaging device 12 .
  • an internally profiled tube section 30 is used as a basic workpiece.
  • a radial outer profile of a ring to be produced is rolled, wherein the thus finished ring is subsequently separated from the internally profiled tube 30 , such as by a separating device 34 a , which is also schematically shown in FIG. 4 .
  • a further section of the internally profiled tube section 30 may be rolled in order to produce a further ring, which is then again separated.
  • the rolling device 40 can be structured and operated as described in document DE 102 19 441 C1, the entire contents of which are incorporated herein by reference.
  • the rolling device 40 shown in FIG. 4 comprises at least two rollers 42 which are rotatable in a rolling motion 44 about axes, wherein the axes extend parallel to the longitudinal axis of the clamped tube section 30 .
  • rollers 42 respectively apply a radial pressure onto the tube section 30 , as is schematically indicated at reference numeral 44 .
  • One end of the tube section 30 is clamped by means of a chuck 46 , and is rotated about its longitudinal axis via the chuck 46 , as is schematically shown at reference numeral 48 .
  • a difference vis-à-vis DE 102 19 441 C1 is that the tube section 30 has an axial inner profile 32 which shall be affected as little as possible, and in some cases to no extent or substantially no extent, during the rolling process.
  • a second profile mandrel 50 is provided in the rolling device 40 .
  • the second profile mandrel 40 has a first section with an outer profile 52 which corresponds to the axial inner profile of the tube section 30 .
  • the second profile mandrel 50 comprises an abutting section 54 , the diameter of which is larger than that of the outer profile 52 .
  • the abutting section 54 abuts the free end of the tube section 30 in the axial direction.
  • the profile mandrel 50 is also movable in the axial direction, as is schematically indicated at reference numeral 56 . Therefore, the second profile mandrel 50 can simultaneously define a counterforce tool, and can be configured to apply an axial force onto the rolled section.
  • the axial force is adapted to control the flow of material (namely in the axial direction as is shown at reference numeral 58 , and in the radial direction as is shown at reference numeral 59 ).
  • a radial outer profile 62 is produced in the rolling device 40 by the rolling processing of a section of the internally profiled tube section 30 (namely, the radial outer profile for one ring, or alternatively simultaneously for a plurality of rings). After the rolling process, the ring 60 thus finished is separated, such as by the schematically shown separating device 34 a.
  • the flow of material may be controlled in the axial and/or radial directions, wherein a radial outer profile 62 can finally be generated, the outer circumference of which can be in sections larger than the outer circumference of the internally profiled tube section 30 .
  • the ring 60 being profiled axially at its inner circumference and radially at its outer circumference can be used, for example, as a shifting sleeve for a vehicular transmission.
  • FIG. 5 shows an alternative embodiment of a rolling device 40 ′.
  • the structure and function of the rolling device 40 ′ correspond to those of the rolling device 40 of FIG. 4 .
  • the only difference between the illustrated embodiment of FIG. 5 and that of FIG. 4 is that the rolling device 40 ′ shown in FIG. 5 is configured to roll internally profiled rings 36 which have been separated from an internally profiled tube section 30 in advance (see dotted lines in FIG. 3 ).
  • a further counterforce tool 66 may be provided, and can be axially movable as is shown at reference numeral 68 . In this manner, the ring may be influenced from both sides to control the flow of material.
  • FIG. 6 shows an alternative embodiment of a swaging device 12 ′ for producing an internally profiled tube section 30 ′.
  • the structure and function of the swaging device 12 ′ correspond to those of the swaging device 12 of FIG. 2 . In the following description, only the differences between the swaging device 12 ′ shown in FIG. 6 and the swaging device 12 shown in FIG. 2 are discussed.
  • the first profile mandrel 20 ′ comprises a section having an outer profile 22 ′, the length of which corresponds to the tube section 30 ′ to be formed.
  • the first profile mandrel 20 ′ is clamped in a chuck 70 which is fed to the swaging device 14 ′ in an axial direction together with the tube 10 .
  • a tube section 30 ′ having an axial inner profile is swaged in the swaging device 12 ′, wherein the length of the tube section approximately corresponds to the length of the outer profile 22 ′ of the first profile mandrel 20 ′.
  • a certain portion of the basic tube 10 i.e., at the ends thereof is not utilisable, and can be separated before the tube section 30 is further processed.
  • FIGS. 7 and 8 a clutch body 80 produced according to an embodiment of the method disclosed herein is shown.
  • the clutch body 80 is provided with an axial inner profile 32 ′′ and a radial outer profile 62 ′′.
  • the axial inner profile 32 ′′ serves to slide the body onto a respective toothed element or structure, such as a freewheel of a transmission.
  • the radial outer profile 62 ′′ is configured such that the clutch body 80 is readily attachable to a freewheel, such as by welding. Therefore, the radial outer profile 62 ′′ comprises a radial flange section.
  • an outer toothed section 82 is provided on the clutch body 80 , and comprises outer teeth into which the inner teeth of the shifting sleeve may be inserted in order to obtain a form fit between the clutch body 80 (and therefore the freewheel connected to the clutch body 80 ) and a transmission shaft, at which the shifting sleeve is supported to be axially movable, but stationary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
US11/958,184 2005-06-15 2007-12-17 Method and device for producing metal rings Abandoned US20080250838A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005028828.6 2005-06-15
DE102005028828A DE102005028828B3 (de) 2005-06-15 2005-06-15 Verfahren und Vorrichtung zum Herstellen von Metallringen
PCT/EP2006/005695 WO2006133910A1 (de) 2005-06-15 2006-06-14 Verfahren und vorrichtung zum herstellen von metallringen

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/005695 Continuation WO2006133910A1 (de) 2005-06-15 2006-06-14 Verfahren und vorrichtung zum herstellen von metallringen

Publications (1)

Publication Number Publication Date
US20080250838A1 true US20080250838A1 (en) 2008-10-16

Family

ID=36999843

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/958,184 Abandoned US20080250838A1 (en) 2005-06-15 2007-12-17 Method and device for producing metal rings

Country Status (7)

Country Link
US (1) US20080250838A1 (zh)
EP (1) EP1909990B1 (zh)
KR (1) KR20080025374A (zh)
CN (1) CN101222989B (zh)
AT (1) ATE421395T1 (zh)
DE (2) DE102005028828B3 (zh)
WO (1) WO2006133910A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010012457A1 (de) * 2008-07-29 2010-02-04 Repkon Machine And Tool Industry & Trade Ltd. Vorrichtung und verfahren zum herstellen oder bearbeiten von werkstücken aus einer vorform, insbesondere zum anformen von innenprofilen oder innenverzahnungen
EP2241386A1 (de) * 2009-04-16 2010-10-20 Felss GmbH Umformwerkzeug zur Herstellung eines Innenprofils, insbesondere einer Innenverzahnung, eines Werkstücks
DE102010028797A1 (de) * 2010-05-10 2011-11-10 Federal-Mogul Sealing Systems Gmbh Verfahren und Vorrichtung zur Herstellung von Dichtringen
DE102012112029A1 (de) * 2012-12-10 2014-06-12 Dorma Gmbh + Co. Kg Verfahren zur Herstellung ringförmiger Funktionskörper eines Türbetätigers zur Betätigung einer Tür
CN104139144A (zh) * 2014-08-11 2014-11-12 贵州航天新力铸锻有限责任公司 椭球形壳体锻件的锻制装置
DE102015107475B3 (de) 2015-05-12 2016-11-17 Schuler Pressen Gmbh Verfahren zum Fertigen eines Ringes, Wälzlager und Vorrichtung zum Fertigen eines Ringes
DE102016115043B4 (de) * 2016-08-12 2019-02-21 Bühler Motor GmbH Verfahren zur Herstellung eines Hohlrads für ein Planetengetriebe und Baukastensystem mit einem solchen Hohlrad

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3422518A (en) * 1967-10-20 1969-01-21 Valley Metallurg Processing Method of reforming tubular metal blanks into inner-fin tubes
US3768291A (en) * 1972-02-07 1973-10-30 Uop Inc Method of forming spiral ridges on the inside diameter of externally finned tube
US4612789A (en) * 1983-08-03 1986-09-23 Formflo Limited Making rings from tube or bar stock
US5392517A (en) * 1994-01-07 1995-02-28 General Motors Corporation Method of making a ring gear
US5881592A (en) * 1998-04-22 1999-03-16 Cerro Copper Products Co. Floating plug for drawing of tubes
US5933953A (en) * 1997-03-17 1999-08-10 Carrier Corporation Method of manufacturing a heat transfer tube
US20030226250A1 (en) * 2002-04-22 2003-12-11 Gerald Hauf Method of producing sliding sleeves for gearshift mechanisms

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1191797A (en) * 1968-07-15 1970-05-13 Valley Metallurg Proc Company Method of Reforming Tubular Metal Blanks into Inner-Fin Tubes
DE3717423A1 (de) * 1987-04-07 1988-10-27 Ragettli Christian Ag Verfahren zum profilformen von als rollkoerper ausgebildeten werkstuecken und einrichtung zur ausuebung des verfahrens
ATE155717T1 (de) * 1994-06-25 1997-08-15 Grob Ernst Fa Verfahren und vorrichtung zum walzen von hohlteilen
DE19526900B4 (de) * 1995-07-22 2005-07-14 Technische Universität Dresden Verfahren zur kombinierten spanenden und umformenden Fertigung von Ringen und Maschinen hierzu
DE10219441C1 (de) * 2002-04-25 2003-09-18 Univ Dresden Tech Verfahren zur Herstellung von innen- und/oder außenprofilierten Ringen sowie Anordnung hierzu
DE10317506C5 (de) * 2003-04-16 2008-05-15 Daimler Ag Verfahren zum Herstellen eines hohlen Werkstücks und nach dem Verfahren hergestelltes hohles Werkstück
AU2003263136A1 (en) * 2003-08-13 2005-03-07 Technische Universitat Dresden Method for producing internally or externally profiled rings and arrangement therefor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3422518A (en) * 1967-10-20 1969-01-21 Valley Metallurg Processing Method of reforming tubular metal blanks into inner-fin tubes
US3768291A (en) * 1972-02-07 1973-10-30 Uop Inc Method of forming spiral ridges on the inside diameter of externally finned tube
US4612789A (en) * 1983-08-03 1986-09-23 Formflo Limited Making rings from tube or bar stock
US5392517A (en) * 1994-01-07 1995-02-28 General Motors Corporation Method of making a ring gear
US5933953A (en) * 1997-03-17 1999-08-10 Carrier Corporation Method of manufacturing a heat transfer tube
US5881592A (en) * 1998-04-22 1999-03-16 Cerro Copper Products Co. Floating plug for drawing of tubes
US20030226250A1 (en) * 2002-04-22 2003-12-11 Gerald Hauf Method of producing sliding sleeves for gearshift mechanisms

Also Published As

Publication number Publication date
ATE421395T1 (de) 2009-02-15
KR20080025374A (ko) 2008-03-20
EP1909990A1 (de) 2008-04-16
CN101222989B (zh) 2010-12-15
WO2006133910A1 (de) 2006-12-21
CN101222989A (zh) 2008-07-16
EP1909990B1 (de) 2009-01-21
DE102005028828B3 (de) 2006-12-21
DE502006002727D1 (de) 2009-03-12

Similar Documents

Publication Publication Date Title
US20080250838A1 (en) Method and device for producing metal rings
JP5791599B2 (ja) 延伸フローフォーミング成形の方法及び装置
RU2445181C2 (ru) Способ и устройство для изготовления полого тела из обрабатываемой детали в виде круглой заготовки
US8161788B2 (en) Method for producing workpieces
EP2307156B1 (en) Method of making a ring
CN111889967A (zh) 一种平板卷旋式轮辋及成形工艺
US20030019269A1 (en) Method and a press cylinder device for producing a hollow body
EP3713690B1 (en) Manufacturing method for hollow rack bar
CN108463296A (zh) 旋压装置以及旋压方法
US8302314B2 (en) Method for producing internally or externally profiled rings and arrangement therefor
US20090056400A1 (en) Method and apparatus for producing stepped hollow shafts or stepped cylindrical hollow members by transverse rolling
CA2506675C (en) Method and apparatus for spinning to a constant length
US20090014082A1 (en) Exhaust apparatus and method
US9616476B2 (en) Device and method for rolling of pipe blanks
JP2011121068A (ja) スウェージング加工方法、スウェージング加工装置、およびスウェージング金型
JP4369424B2 (ja) 少なくとも部分的に成形された管を製造するための方法及び装置
CN110586825B (zh) 一种台阶内孔筒类锻件的自由锻造法
RU2799823C1 (ru) Способ изготовления стальных сложнопрофильных оболочек
RU2509619C2 (ru) Способ изготовления деталей
US10124388B2 (en) Device and method to shape worked pieces
WO2007128031A1 (en) Manufacture of hydraulic power steering sleeves
JPH1085836A (ja) メカニカル拡管機用拡管ダイス
JP4573090B2 (ja) 管の加工方法および平行スエージ加工装置
SU505456A1 (ru) Внутренний инструмент стана поперечной прокатки труб
MXPA06002364A (es) Metodo y dispositivo para producir tubos al menos parcialmente perfilados

Legal Events

Date Code Title Description
AS Assignment

Owner name: HOERBIGER SYNCHRONTECHNIK GMBH & CO. KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FLUGGE, TORSTEN;KWASNITZA, ERWIN;RINKE, LORENZ;AND OTHERS;REEL/FRAME:021149/0192;SIGNING DATES FROM 20080416 TO 20080606

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION