GB813675A - Apparatus for progressively reducing the diameter of tubular or hollow cylindrical bodies - Google Patents

Apparatus for progressively reducing the diameter of tubular or hollow cylindrical bodies

Info

Publication number
GB813675A
GB813675A GB27954/57A GB2795457A GB813675A GB 813675 A GB813675 A GB 813675A GB 27954/57 A GB27954/57 A GB 27954/57A GB 2795457 A GB2795457 A GB 2795457A GB 813675 A GB813675 A GB 813675A
Authority
GB
United Kingdom
Prior art keywords
inductor
tube
deforming
axially
hollow cylindrical
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
GB27954/57A
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.)
ERICH HOERMANN
Original Assignee
ERICH HOERMANN
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 ERICH HOERMANN filed Critical ERICH HOERMANN
Publication of GB813675A publication Critical patent/GB813675A/en
Expired legal-status Critical Current

Links

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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/18—Spinning using tools guided to produce the required profile
    • 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
    • B21D41/04—Reducing; Closing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Induction Heating (AREA)

Abstract

813,675. Spinning. SCHMIDT, W., and HORMANN, E. Sept. 4, 1957 [Sept. 6, 1956], No. 27954/57. Class 83 (4). Apparatus for progressively reducing, by means of a radially or radially and axially movable deforming roll, the diameter of tubes or hollow cylindrical bodies whilst heated by induction heating is characterized in that the inductor is constructed so that the part thereof that induces the effective heat in the work lies immediately adjacent the peripheral region of deformation and the inductor is shaped partly to surround the work remote from the deforming roll. A tube 1 is held in a gripper 2 and rotated and the deforming roll 3 is moved towards the tube and also axially thereof to taper the tube as shown in Fig. 1. The inductor 6 comprises a heat-inducing part 7 and magnetic yokes 9. Immediately behind the inductor is a bearing support 13. Back rolls 14 and 15 may be provided (Fig. 4) and the inductor shaped to embrace these rolls. The entire assembly is advanced in the axial direction and the tube reaches maximum temperature at the point where it emerges from the inductor. The deformation may be continued to form a conical tube or one end may be completely closed as is required in the making of cylinder bottoms or necks. In another embodiment the heating and deforming assembly remains stationary and the tube with its rotating gripper is advanced axially.
GB27954/57A 1956-09-06 1957-09-04 Apparatus for progressively reducing the diameter of tubular or hollow cylindrical bodies Expired GB813675A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE813675X 1956-09-06

Publications (1)

Publication Number Publication Date
GB813675A true GB813675A (en) 1959-05-21

Family

ID=6733963

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27954/57A Expired GB813675A (en) 1956-09-06 1957-09-04 Apparatus for progressively reducing the diameter of tubular or hollow cylindrical bodies

Country Status (1)

Country Link
GB (1) GB813675A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0530383A1 (en) * 1991-08-02 1993-03-10 ZEPPELIN-Metallwerke GmbH Method and device for forming workpieces
EP0794844A1 (en) * 1994-10-26 1997-09-17 Tandem Systems, Inc. System for constricting a tube wall
CN111889551A (en) * 2020-06-24 2020-11-06 上海飞挺管业制造有限公司 Equipment and method for machining straight edge end of large-diameter reducing pipe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0530383A1 (en) * 1991-08-02 1993-03-10 ZEPPELIN-Metallwerke GmbH Method and device for forming workpieces
EP0794844A1 (en) * 1994-10-26 1997-09-17 Tandem Systems, Inc. System for constricting a tube wall
EP0794844A4 (en) * 1994-10-26 1998-04-01 Tandem Sys Inc System for constricting a tube wall
CN111889551A (en) * 2020-06-24 2020-11-06 上海飞挺管业制造有限公司 Equipment and method for machining straight edge end of large-diameter reducing pipe

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