US3452584A - Mandrels for use in the production of tubes - Google Patents

Mandrels for use in the production of tubes Download PDF

Info

Publication number
US3452584A
US3452584A US604428A US3452584DA US3452584A US 3452584 A US3452584 A US 3452584A US 604428 A US604428 A US 604428A US 3452584D A US3452584D A US 3452584DA US 3452584 A US3452584 A US 3452584A
Authority
US
United States
Prior art keywords
spigot
plug
mandrel
adaptor
limbs
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.)
Expired - Lifetime
Application number
US604428A
Other languages
English (en)
Inventor
Alec John Jones
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.)
TI Group Services Ltd
Original Assignee
TI Group Services Ltd
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 TI Group Services Ltd filed Critical TI Group Services Ltd
Application granted granted Critical
Publication of US3452584A publication Critical patent/US3452584A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • 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
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/16—Mandrels; Mounting or adjusting same
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/60—Biased catch or latch

Definitions

  • a combination of a readily engageable and disengageable mandrel and plug made up of a mandrel, and an adaptor on the end of the mandrel which adaptor has a shoulder portion and a frustoconical spigot projecting from the shoulder portion.
  • the spigot has a longitudinal tranverse slot which carries a resilient plate.
  • the plate has a pair of spaced limbs directed towards the free end of the spigot, and each limb has an outwardly projecting portion at its end which projects beyond the surface of the spigot.
  • a plug is fitted onto the spigot and has a socket for receiving the spigot and an enlarged cavity in which the projections on the ends of the limbs are received. The plug, when mounted, bears against the shoulder on the adaptor.
  • This invention relates to mandrels for use in the production of tubes by a process in which a heated billet is formed into a tube by being helically fed onto a plug, carried on the end of a mandrel, by means of rolls driven on skew axes.
  • the plug is required to withstand considerable heat and rubbing pressure and it has been found that the life of a plug can be extended by changing plugs for each new billet. In this way the used plugs can be cooled, as required before reuse.
  • the plug retaining means should be such that the plug can be removed by a simple pulling action and replaced by a pushing action. At the same time the plug must be held in place so that it does not drop from the end of the mandrel inadvertently.
  • a mandrel an adaptor on the end of the mandrel, which adaptor has a shoulder portion and a frustoconical spigot projecting from the shoulder portion, the spigot has a longitudinal transverse slot which in turn has a resilient plate mounted in it.
  • the plate has a pair of spaced limbs directed toward the free end of the spigot, there being outwardly projecting portions at the ends of the limbs which project from the surface of the spigot.
  • a plug is fitted on the spigot and has a socket for receiving the spigot and has an enlarged cavity in which the projections on the ends of the limbs are received. The plug bears against the shoulder on the adaptor.
  • the plug 10 is formed with a socket constituted by a recess 10 tapering from an annular end face 10 to a constricted throat 10. Beyond the throat 10 the recess is enlarged to form a cavity 10
  • an adaptor 12 formed with a frusto-conical spigot 13 adapted to fit in the tapering portion of the recess 10 so that the face 10 of the plug 10 can abut against a shoulder 14 on the adaptor.
  • Formed in the spigot 13 is a transverse slot 13 which extends from the shoulder 14 up to the free end of the spigot 13.
  • a resilient plate 15 of generally U-shaped form.
  • the two limbs 15 of plate 15 are directed towards the free end of the spigot 13 and the plate is held in position by a peg or screw 16 extending across the slot 13 through a hole in the plate 15 adjacent the shoulder 14.
  • a roller 17 Adjacent the free end of the spigot 13 a roller 17 is mounted between the limbs 15 to keep these properly orientated.
  • the limbs 15 do not project from the surface of the spigot 13 except at their free ends where there is a projecting portion 15 on each limb. At each end of each portion 15 there is an inclined cam surface.
  • the plate 15 collapses resiliently when the plug 10 is pushed on or pulled off the spigot. It provides, however, a sufiiciently secure connection to prevent inadverent separation of the plug from the mandrel. This is of some importance in a three-roll piercing machine, where premature separation of the plug from the mandrel may result in seveer damage to the rolls.
  • a mandrel on the end of said mandrel, said adaptor having a shoulder portion; a. frustoconical spigot projecting from said shoulder portion, said spigot having a longitudinally extending transverse slot; a resilient plate mounted in said slot and having a pair of spaced limbs directed toward the free end of said spigot and outwardly projecting portions at the etnds of said limbs projecting from the frustoconical surface of said spigot; and a plug fitted on said spigot, which plug has a socket to receive said spigot and an enlarged cavity in which said projections on the ends of said limbs are frictionally received, the plug bearing against said shoulder on the adaptor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
US604428A 1965-12-24 1966-12-23 Mandrels for use in the production of tubes Expired - Lifetime US3452584A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54868/65A GB1129589A (en) 1965-12-24 1965-12-24 Mandrels for use in the production of tubes

Publications (1)

Publication Number Publication Date
US3452584A true US3452584A (en) 1969-07-01

Family

ID=10472298

Family Applications (1)

Application Number Title Priority Date Filing Date
US604428A Expired - Lifetime US3452584A (en) 1965-12-24 1966-12-23 Mandrels for use in the production of tubes

Country Status (3)

Country Link
US (1) US3452584A (de)
DE (1) DE1956608U (de)
GB (1) GB1129589A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4483638A (en) * 1981-05-29 1984-11-20 Vallourec Device for fixing a piercing or expanding plug to a piercing or expanding bar
US5145275A (en) * 1991-12-31 1992-09-08 Claude Alain Truss beam coupler
WO1999067541A1 (en) * 1998-06-22 1999-12-29 Antonis Theodorou Extruded frame member for structural connection and method of forming same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1989507A (en) * 1933-05-03 1935-01-29 Diescher Tube Mills Inc Rolling mill mandrel
US2167424A (en) * 1938-03-29 1939-07-25 Nat Tube Co Pipe or tube making
US2257979A (en) * 1939-12-23 1941-10-07 Globe Union Inc Combined shaft bearing and coupling
GB987512A (en) * 1963-03-12 1965-03-31 Ti Group Services Ltd Mandrels for use in the production of tubes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1989507A (en) * 1933-05-03 1935-01-29 Diescher Tube Mills Inc Rolling mill mandrel
US2167424A (en) * 1938-03-29 1939-07-25 Nat Tube Co Pipe or tube making
US2257979A (en) * 1939-12-23 1941-10-07 Globe Union Inc Combined shaft bearing and coupling
GB987512A (en) * 1963-03-12 1965-03-31 Ti Group Services Ltd Mandrels for use in the production of tubes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4483638A (en) * 1981-05-29 1984-11-20 Vallourec Device for fixing a piercing or expanding plug to a piercing or expanding bar
US5145275A (en) * 1991-12-31 1992-09-08 Claude Alain Truss beam coupler
WO1999067541A1 (en) * 1998-06-22 1999-12-29 Antonis Theodorou Extruded frame member for structural connection and method of forming same
US6036398A (en) * 1998-06-22 2000-03-14 Theodorou; Antonis Extruded frame member for structural connection and method of forming same

Also Published As

Publication number Publication date
GB1129589A (en) 1968-10-09
DE1956608U (de) 1967-03-09

Similar Documents

Publication Publication Date Title
DE2552648A1 (de) Rohrverbindung und verfahren und vorrichtung zum herstellen derselben
US3452584A (en) Mandrels for use in the production of tubes
EP0134144B1 (de) Verfahren und Einrichtung zur Herstellung eines Gegenstandes mit Innengewinde
US1919254A (en) Die for producing spirally corrugated tubing
GB1008709A (en) Process for the production of round hollow bodies from blooms
DE747860C (de) Rollenstossbank zur Herstellung von Hohlkoerpern
US1647526A (en) Implement for smoothing bent tubing
DE1427915B2 (de) Walzwerk zum herstellen nahtloser rohre
US1640964A (en) Roll-making machine
US1707870A (en) Roll-spreading jack
US2298703A (en) Expanding and flaring tool
US2032917A (en) Apparatus for drawing
US1685636A (en) Tube-drawing plug
US1496303A (en) Bushing-removing tool
US1977327A (en) Push bench die holder
US2705275A (en) Dies for necking tube ends
US609147A (en) Machine for manufacturing seamless drawn tubes
MX2020005195A (es) Perforadora y metodo para producir tuberia de metal sin costura utilizando la misma.
US3610012A (en) One pass rolling mill plug and rolling plug mill
GB656708A (en) Method and apparatus for the continuous manufacture of seamless tubes
GB1161961A (en) A Straightening System
CN220005471U (zh) 一种矫直盲区消除工装
US1846695A (en) Rod feeding collet
CN217492149U (zh) 一种万能轧机用快速更换轧辊的抽芯机构
GB506597A (en) Improvements relating to the production of metal tubes in inclined rolling mills