GB942843A - Improvements in or relating to metal working dies - Google Patents

Improvements in or relating to metal working dies

Info

Publication number
GB942843A
GB942843A GB1748461A GB1748461A GB942843A GB 942843 A GB942843 A GB 942843A GB 1748461 A GB1748461 A GB 1748461A GB 1748461 A GB1748461 A GB 1748461A GB 942843 A GB942843 A GB 942843A
Authority
GB
United Kingdom
Prior art keywords
die
holder
cylinder
ram
eject
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
GB1748461A
Inventor
Thomas Francis Tribe
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.)
British Federal Welder and Machine Co Ltd
Original Assignee
British Federal Welder and Machine Co 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 British Federal Welder and Machine Co Ltd filed Critical British Federal Welder and Machine Co Ltd
Priority to GB1748461A priority Critical patent/GB942843A/en
Publication of GB942843A publication Critical patent/GB942843A/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
    • 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)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

942,843. Spinning. BRITISH FEDERAL WELDER & MACHINE CO. Ltd., and T. F. TRIBE. May 8, 1962 [May 12, 1961], No. 17484/61. Heading G3J. A rotary reducing die comprises a die holder, a die removably secured in the holder and a power actuated ejector device carried by the holder to eject said die. A circular frustoconical die 113 has a work forming front recess 116 and is retained by tape engagement in a holder 115. Preferably the die comprises sectors insulated from each other and connected to an electrical supply so that when a rotating tube 117, which is to be end formed, is brought into contact with the sectors current is caused to flow which produces a heating effect on the tube end. The holder carries a reciprocating hydraulic motor comprising a cylinder 118 and a hollow ram 119 having a screwed extension 124 to which a flange 126 is fitted. The cylinder is connected to a hand pump 120 and the ram advanced to eject the die 113. A number of springs 127 are provided between the flange 126 and the cylinder end wall to retain the ram in the retracted position.
GB1748461A 1961-05-12 1961-05-12 Improvements in or relating to metal working dies Expired GB942843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1748461A GB942843A (en) 1961-05-12 1961-05-12 Improvements in or relating to metal working dies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1748461A GB942843A (en) 1961-05-12 1961-05-12 Improvements in or relating to metal working dies

Publications (1)

Publication Number Publication Date
GB942843A true GB942843A (en) 1963-11-27

Family

ID=10095986

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1748461A Expired GB942843A (en) 1961-05-12 1961-05-12 Improvements in or relating to metal working dies

Country Status (1)

Country Link
GB (1) GB942843A (en)

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