GB745740A - Improvements in or relating to the extrusion of elongated bodies - Google Patents

Improvements in or relating to the extrusion of elongated bodies

Info

Publication number
GB745740A
GB745740A GB32924/52A GB3292452A GB745740A GB 745740 A GB745740 A GB 745740A GB 32924/52 A GB32924/52 A GB 32924/52A GB 3292452 A GB3292452 A GB 3292452A GB 745740 A GB745740 A GB 745740A
Authority
GB
United Kingdom
Prior art keywords
billet
extruded
die
mandrel
dies
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
Application number
GB32924/52A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB745740A publication Critical patent/GB745740A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00Profiling tools for metal extruding
    • B21C25/08Dies or mandrels with section variable during extruding, e.g. for making tapered work; Controlling variation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)

Abstract

745,740. Extruding. KREIDLER, A. Dec. 30, 1952 [Dec. 31, 1951], No. 32924/52. Class 83 (4). [Also in Group V] An elongated body having portions of different cross-section and in which the rear part at least is hollow, is made by extruding a billet successively through dies of different cross-sections, the hollow portion being formed by a mandrel. A solid billet 9 is first pierced by a mandrel 8 and simultaneously a portion of the billet is extruded through a die 4. The latter is then replaced by a die with a larger orifice and the remainder of the billet is extruded as a tube between this orifice and the mandrel by a ram 7. In another embodiment, Fig. 9, a hollow cylindrical billet 15 is extruded between a mandrel 23 and a pair of dies 17, 18 with different sized orifices. The dies are held in position by removable stops such as 21 slidable in guideways 27. Each stop carries a cam 28 co-operating with a spring-loaded slide 32 which, during the initial part of the extrusion process, holds the stop 21 in engagement with the die 18. At a predetermined point in the process, arms 37 on the press ram 22 engage the slides 32 and thus release the stops 21 whereby the die 18 is then carried loosely by the smaller portion 14 of the extruded body whilst the remainder of the billet is extruded through the die 17 only. In a modification the slides 32 are actuated by solenoids controlled by a switch engaged by the portion 14 of the extruded body. The slides may alternatively be released by hydraulic or pneumatic means.
GB32924/52A 1951-12-31 1952-12-30 Improvements in or relating to the extrusion of elongated bodies Expired GB745740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE745740X 1951-12-31

Publications (1)

Publication Number Publication Date
GB745740A true GB745740A (en) 1956-02-29

Family

ID=6648242

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32924/52A Expired GB745740A (en) 1951-12-31 1952-12-30 Improvements in or relating to the extrusion of elongated bodies

Country Status (1)

Country Link
GB (1) GB745740A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141965B (en) * 1959-03-17 1963-01-03 Baldwin Lima Hamilton Corp Device on metal extrusion presses for the production of beads distributed over the length of the strand
CN115722626A (en) * 2022-11-29 2023-03-03 中国第一重型机械股份公司 Combined step extrusion die and forming method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141965B (en) * 1959-03-17 1963-01-03 Baldwin Lima Hamilton Corp Device on metal extrusion presses for the production of beads distributed over the length of the strand
CN115722626A (en) * 2022-11-29 2023-03-03 中国第一重型机械股份公司 Combined step extrusion die and forming method
CN115722626B (en) * 2022-11-29 2024-03-26 中国第一重型机械股份公司 Combined step extrusion die and forming method

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