WO2021191850A1 - Appareil pour épaissir des portions bord d'une surface interne d'un tube - Google Patents

Appareil pour épaissir des portions bord d'une surface interne d'un tube Download PDF

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Publication number
WO2021191850A1
WO2021191850A1 PCT/IB2021/052516 IB2021052516W WO2021191850A1 WO 2021191850 A1 WO2021191850 A1 WO 2021191850A1 IB 2021052516 W IB2021052516 W IB 2021052516W WO 2021191850 A1 WO2021191850 A1 WO 2021191850A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
support member
brim
punch
force
Prior art date
Application number
PCT/IB2021/052516
Other languages
English (en)
Inventor
Vishal KALUBHAI BHARODIYA
Gujre VINAY SANJAY
Pala LAKSHMIKANT
Rahul KUMAR VERMA
Original Assignee
Tata Steel Limited
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 Tata Steel Limited filed Critical Tata Steel Limited
Priority to EP21720561.6A priority Critical patent/EP4126414A1/fr
Priority to JP2021575334A priority patent/JP2023518625A/ja
Priority to BR112022004444A priority patent/BR112022004444A2/pt
Publication of WO2021191850A1 publication Critical patent/WO2021191850A1/fr
Priority to CONC2022/0003090A priority patent/CO2022003090A2/es

Links

Classifications

    • 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
    • B21J5/08—Upsetting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B21J13/025—Dies with parts moving along auxiliary lateral directions
    • 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
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/063—Making machine elements axles or shafts hollow
    • 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
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/12—Shaping end portions of hollow articles

Definitions

  • TITLE “AN APPARATUS FOR THICKENING BRIM PORTIONS IN AN INNER
  • the present disclosure relates to the field of manufacturing technology. Particularly, but not exclusively, the present disclosure relates to an apparatus for forming or thickening a tube. Further embodiments of the present disclosure disclose apparatus and process for thickening the tube at an inner surface of its brim.
  • a tube is a long hollow cylinder made of materials such as metal, plastic or composites.
  • the tubes may be used in various applications in the field of domestic, medical, fuel gas distributions, automotive and other applications including air conditioning and refrigeration.
  • tubes may be used in frames, seating systems, fuel delivery components and automotive link arms require tubes to be welded in series to create an integrated frame.
  • the tubes may be welded using a various known welding methods such as MIG welding, flux-cored arc welding, TIG welding, stick welding etc. depending upon the material of the tube and the size of the tube. Welding is a process of joining parts together by heating the surfaces to the point of melting.
  • the fusion zone is a section of the material that is present after an object has been welded.
  • the fusion zone begins and ends at the portion of the material that have been coalesced. This zone will have a chemical composition that is a mixture of the substrate being welded together and any additional filler material that may have been used.
  • the weld interface is a region composed of an unmixed zone of weld.
  • the heat affected zone (HAZ) is the area of the base material which is not melted but its microstructure and properties are altered by the welding.
  • the fusion zone and the HAZ acts as a stress raiser zone in the material.
  • the stress raiser zones increase stress concentration factor, further reducing the fatigue behavior of the welded connection.
  • the tubes of uniform higher thickness can be used, or tubes thickened only at its free ends can be used in the automotive applications.
  • the tubes of higher uniform thickness can be used in the application, but it adds unnecessary weight to the overall assembly. The latter approach i.e., the use of tubes thickened at the ends ensures overall weight reduction of the entire assembly as only the end parts which are to be welded are thickened.
  • variable thickness tubes are flexible rolling, swage auto-frettage process, tube drawing using position controlled mandrel methods, extrusion with special die setup and also internally and externally upsetting ends of the tube.
  • the ends of the tubes can be thickened using the above-mentioned process.
  • the above said processes have several restraints such as higher investment in tooling and/or low productivity due to increased cycle time. Also, in conventional systems it is difficult to thicken the tube from the inner circumference simultaneously in both the sides.
  • the present disclosure is directed to overcome one or more limitations stated above.
  • an apparatus for thickening brim portions in an inner surface of a tube includes a first support member, that is configured to rigidly support an outer surface along its length.
  • the apparatus further includes a second support member configured to rigidly support the inner surface of the tube along its length excluding the brim portions on the inner surface of the tube.
  • the second member is a multi-piece mandrel.
  • the apparatus also includes a punch driven by an external power source, wherein the punch is configured to exert force simultaneously on the brim portions of the tube.
  • the first support member is driven by a first external power source to exert a longitudinal force on the first support member to impart lateral inward movement on the first support movement on the first support, to rigidly support the outer surface of the tube.
  • portion of the second support member is defined with a chamfer at either end.
  • the first and second external power source is at least one of a hydraulic drive or pneumatic drive.
  • a tube is formed using the apparatus.
  • the tube including a body portion and a brim portion at both ends of the of the body portion.
  • the brim portion at both ends of the body portion is such that, thickness of the brim portion in the inner surface of the tube is greater than thickness of the body portion of the tube.
  • the body portion of the tube is of uniform thickness.
  • a process of thickening a brim portion on an inner surface of a tube includes supporting by a first support member along an outer surface of the tube along its length.
  • the process also includes supporting by a second support member along the inner surface of the tube along its length excluding the brim portion on the inner surface of the tube, wherein the second support member is a multipiece mandrel.
  • An application of force by the punch on the brim portion of the tube plastically deforms the brim portion of the tube to conform to a shape of the second support member at either ends to thicken the brim portion on the inner surface of the tube.
  • FIG.l illustrates a pictorial view of an apparatus used for thickening brim portion in an inner surface of a tube, in accordance with an embodiment of the present disclosure.
  • FIG.2 illustrates a pictorial view of the apparatus of FIG.l after the tube has deformed, in accordance with an embodiment of the present disclosure.
  • FIG.3 illustrates a pictorial view of a second support member, in accordance with an embodiment of present disclosure.
  • FIG.4 illustrates cross-sectional view of the tube that is plastically deformed in the inner surface of the tube using the apparatus of FIG.l, in accordance with an embodiment of the present disclosure.
  • Embodiments of the present disclosure discloses an apparatus for thickening brim portion in an inner surface of a tube, particularly, but not limited to, tubes that may be used in components of automobile.
  • the apparatus includes a first support member, which is configured to rigidly support an outer surface of the tube along its length.
  • the first support member may be driven by a first external power source.
  • the apparatus further includes a second support member, which is configured to rigidly support an inner surface of the tube along its length excluding the inner surface of the brim portion of the tube.
  • the apparatus includes a punch, driven by a second external power source.
  • the punch may be configured to exert force on the brim portions on either ends of the tube.
  • the application of the force by the punch plastically deforms the brim portion of the tube thereby thickening the tube at its brim on either end.
  • the tube may get thickened on an inner surface of the brim portion at both ends of the tube.
  • the second support member used in the present disclosure is a multi-piece mandrel having plurality of pieces assembled into the inner surface of the tube. The ends of the second surface are tapered, such that they define a portion of die for plastic deformation at the brim portions of the tube.
  • the tube formed using the apparatus comprises a body portion and the brim portions in both ends of the body portion.
  • the brim portion at the both ends of the body portion is such that, the thickness of the brim portion of the tube is greater than the thickness of the body portion of the tube.
  • the body portion of the tube may be of uniform thickness and the portion of the brim on either ends of the body may have an increased thickness than that of the body portion.
  • the process of thickening the brim portions on the inner surface of the tube may include supporting by the first support member at over the entire length of the outer surface. Further, the tube is supported by the second support member at the central portion along the inner surface excluding the brim portions on the inner surface on either ends of the tube.
  • the free ends on either sides of the tube are not supported, and this portion forms the material to be deformed to conform to the shape of the ends of the second support member.
  • the second support member may be configured to support the central portion of the inner surface of the tube rigidly.
  • the first support member, the punch and the block may be driven by an external any power source to perform the required process.
  • FIG.l is an exemplary embodiment of the present disclosure, illustrating a pictorial view of an apparatus (100) used for thickening brim portions (201) in an inner surface (111) of a tube (101).
  • the apparatus (100) includes a first support member (102), a second support member (103) and a punch (104).
  • the tube (101) is held firmly between the first support member (102) and the second support member (103), on an outer and inner surface of the tube (110 and 111) respectively.
  • the first support member (102) is configured to rigidly support the tube (101) on the outer surface (110).
  • the second support member (103) is configured to rigidly support the tube (101) from inside i.e. the inner surface (111).
  • the block (105) as shown in the FIG.l is configured to impart a lateral outward movement on the second support member (103).
  • the first support member (102) is driven by a first external power source which provides necessary force to firmly hold the tube (101) between the first and the second support member (102 and 103).
  • the punch (104) may be positioned at either ends of the tube (101) and is driven by a second external power source [not shown].
  • the first external power source drives the first support member (102) in the radially inward direction.
  • the radially inward force on the first support member (102) as said above imparts inward force on the first support member (102) which may rigidly support the tube (101).
  • the longitudinal force of the punch (104) driven by the second external power source may be imparted over the brim portion (201) of the tube (101).
  • the force imparted by the punch (104) acts as compressive force on the brim portion (201) of the tube (101).
  • the compressive force plastically deforms the brim portion (201) on either ends of the tube (101) into a portion of a die formed by the portion of second support member (103) along with the first support member (102) at the either ends.
  • the compressive force acting on the brim portion (201) of the tube (101) deforms the tube (101) into the shape of the die formed by the support members (102 and 103).
  • the die as said above is created by the taper provided on the extreme ends of the second support member (103). The result of plastic deformation of the tube (101) in the die is as shown in FIG.2.
  • the second support member (103) may be a multi -piece mandrel as shown in FIG.3.
  • the second support member (103) may include a plurality of pieces which is depicted in FIG.3 as 103a, 103b, 103c, 103d, 103e, 103f, 103g, 103h, 103i, 103j and 103k.
  • each of the plurality of pieces 103a-103k may be assembled within the tube (101).
  • the piece 103i of the plurality of pieces 103a-103k may be positioned at a substantially central portion in a space defined by the inner surface (111) of the tube (101).
  • the plurality of pieces 103a-103h and 103j-103k may be assembled circumferentially on the piece 103L
  • assembling of the plurality of pieces 103a-103k ensures that an outward lateral force is imparted on the inner surface (111) of the tube (101).
  • the outward lateral force on the inner surface (111) of the tube (101) ensures that the tube is forced against the first support member (102), thereby ensuring that the tube (101) may be secured in position so as to allow the thickening of the brim portions (201) of the tube (101).
  • the second support member (103) may be tapered on either ends to define the die portion for plastic deformation of the brim portion (201) of the tube (101).
  • the tube (101) is held firmly over the entire portion of the outer surface (110) and over the central portion on the inner surface (111).
  • the inner surface (111) of brim portion (201) of the tube (101) other than the central portion of the inner surface (111) may not be supported.
  • the inner surface (111) of brim portion (201) of the tube (101) on both ends may be subjected to compressive force by a punch (104). The force imparted over the brim portions (201) of the tube (101) plastically deforms the tube (101) into the shape of the die created by the chamfered portion of the second support members (103) along with the entire length of the first support member (102).
  • the tube (101) is subjected to compressive force.
  • the compressive force is imparted by the punch (104) which may be driven by the second-external power source.
  • the tube (101) is subjected compressive force on one or both ends.
  • the compressive force that is imparted on the ends of the tube (101) plastically deforms the brim portion (201) of the tube (101).
  • the plastically deformed tube (101) takes the shape of the die that is formed by the tapered portion of the second support member (103) along with the entire length of the first support member (102) as said above.
  • the thickness of the brim portion (201) of the tube (101) increases after the plastic deformation, as it takes the shape of the die.
  • the first and second external power sources may be any one of but not limiting to a hydraulic drive, pneumatic drive, and the like.
  • the tube (101) formed using the said apparatus (100) and the said process may have the body portion (200) and the brim portion (201) as shown in FIG.4.
  • the tube (101) includes the body portion (200) and the brim portion (201).
  • the body portion (200) of the tube (101) may be of uniform cross section.
  • the brim portion (201) may be on both ends of the body portion (200) of the tube (101).
  • the brim portion (201) is formed by the plastic deformation into the die.
  • the brim portion (201) has a thickness greater than thickness of the body portion (200) of tube (101).
  • the thickness of the brim portion (201) of the tube may range from 20% to 30% greater than the thickness of the body portion (200) according to present disclosure but not limiting to this range.
  • the process of thickening may be carried out on variety of materials such as but not limiting to a mild steel with certain alloy elements.
  • the apparatus (100) can simultaneously thicken the inner surface (111) of the brim portion on both the ends of the tube (101), this ensures lower cycle time which improves the productivity of the apparatus (100).
  • the process has low operation cost over the conventional device due use of less tonnage equipment.
  • the tubes (101) undergo strain hardening during the process, facilitating in increase in strength of the tube (101).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

Un appareil destiné à épaissir des portions bord d'une surface interne d'un tube est divulgué. L'appareil comprend un premier élément support, qui est conçu pour solidariser une surface externe sur sa longueur. L'appareil comprend en outre un second élément support conçu pour solidariser la surface interne du tube sur sa longueur à l'exclusion de la portion bord sur la surface interne du tube. Le second élément est un mandrin en plusieurs parties. L'appareil comprend également un poinçon entraîné par une source d'alimentation externe, le poinçon étant conçu pour exercer une force simultanément sur les portions bord du tube. L'application d'une force par le poinçon sur les portions bord du tube déforme plastiquement la portion bord du tube pour qu'elle se conforme à une forme du second élément support aux deux extrémités pour épaissir les portions bord dans la surface interne du tube.
PCT/IB2021/052516 2020-03-27 2021-03-26 Appareil pour épaissir des portions bord d'une surface interne d'un tube WO2021191850A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP21720561.6A EP4126414A1 (fr) 2020-03-27 2021-03-26 Appareil pour épaissir des portions bord d'une surface interne d'un tube
JP2021575334A JP2023518625A (ja) 2020-03-27 2021-03-26 管の内面にある鍔部分を厚くするための装置
BR112022004444A BR112022004444A2 (pt) 2020-03-27 2021-03-26 Aparelho para espessamento, processo de espessamento de porções de borda em uma superfície interna de um tubo e tubo
CONC2022/0003090A CO2022003090A2 (es) 2020-03-27 2022-03-17 Un aparato para engrosar las porciones de borde en una superficie interior de un tubo

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202033013389 2020-03-27
IN202033013389 2020-03-27

Publications (1)

Publication Number Publication Date
WO2021191850A1 true WO2021191850A1 (fr) 2021-09-30

Family

ID=75625611

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2021/052516 WO2021191850A1 (fr) 2020-03-27 2021-03-26 Appareil pour épaissir des portions bord d'une surface interne d'un tube

Country Status (5)

Country Link
EP (1) EP4126414A1 (fr)
JP (1) JP2023518625A (fr)
BR (1) BR112022004444A2 (fr)
CO (1) CO2022003090A2 (fr)
WO (1) WO2021191850A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2078195A (en) * 1934-12-01 1937-04-20 American Radiator Co Method of manufacturing wrought nonferrous pipe fittings
SU1058693A1 (ru) * 1982-03-30 1983-12-07 Предприятие П/Я Ж-1287 Устройство дл получени труб с утолщени ми
JPS59104235A (ja) * 1982-12-07 1984-06-16 Sumitomo Heavy Ind Ltd 据込機
WO2015170574A1 (fr) * 2014-05-09 2015-11-12 新日鐵住金株式会社 Matrice de moulage et procédé de moulage en contre-dépouille
CN105945201A (zh) * 2016-06-27 2016-09-21 上海交通大学 基于分体组合拆模装置的带内环杯形件的成形模具及方法
EP3260216A1 (fr) * 2015-02-18 2017-12-27 Nippon Steel & Sumitomo Metal Corporation Tuyau métallique comportant une partie d'extrémité épaissie et procédé de fabrication de celui-ci
WO2020144549A1 (fr) * 2019-01-07 2020-07-16 Tata Steel Limited Appareil et procédé permettant d'épaissir un tube au niveau de son bord

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2078195A (en) * 1934-12-01 1937-04-20 American Radiator Co Method of manufacturing wrought nonferrous pipe fittings
SU1058693A1 (ru) * 1982-03-30 1983-12-07 Предприятие П/Я Ж-1287 Устройство дл получени труб с утолщени ми
JPS59104235A (ja) * 1982-12-07 1984-06-16 Sumitomo Heavy Ind Ltd 据込機
WO2015170574A1 (fr) * 2014-05-09 2015-11-12 新日鐵住金株式会社 Matrice de moulage et procédé de moulage en contre-dépouille
EP3260216A1 (fr) * 2015-02-18 2017-12-27 Nippon Steel & Sumitomo Metal Corporation Tuyau métallique comportant une partie d'extrémité épaissie et procédé de fabrication de celui-ci
CN105945201A (zh) * 2016-06-27 2016-09-21 上海交通大学 基于分体组合拆模装置的带内环杯形件的成形模具及方法
WO2020144549A1 (fr) * 2019-01-07 2020-07-16 Tata Steel Limited Appareil et procédé permettant d'épaissir un tube au niveau de son bord

Also Published As

Publication number Publication date
JP2023518625A (ja) 2023-05-08
BR112022004444A2 (pt) 2022-10-04
CO2022003090A2 (es) 2022-04-19
EP4126414A1 (fr) 2023-02-08

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