GB1032834A - Method and apparatus for forming a workpiece - Google Patents

Method and apparatus for forming a workpiece

Info

Publication number
GB1032834A
GB1032834A GB6073/65A GB607365A GB1032834A GB 1032834 A GB1032834 A GB 1032834A GB 6073/65 A GB6073/65 A GB 6073/65A GB 607365 A GB607365 A GB 607365A GB 1032834 A GB1032834 A GB 1032834A
Authority
GB
United Kingdom
Prior art keywords
fluid
workpiece
chamber
punch
pressure
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
GB6073/65A
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.)
Milacron Inc
Original Assignee
Cincinnati Milling Machine Co
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 Cincinnati Milling Machine Co filed Critical Cincinnati Milling Machine Co
Publication of GB1032834A publication Critical patent/GB1032834A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/02—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of a flexible element, e.g. diaphragm, urged by fluid pressure
    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/06—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

1,032,834. Stamping. CINCINNATO MILLING MACHINE CO. Feb. 11, 1965, No. 6073/65. Heading B3Q. Apparatus for forming a workpiece 48 about a punch 28, Figs. 1 and 2 (not shown), comprises a flexible diaphragm 46 covering the end of a fluid-filled chamber 44 in a ram 30, hydraulic cylinder-and-piston units 32, 34, 36, 38 for lowering the ram to engage the diaphragm against the workpiece, which is supported on a ring 20, means for raising the pressure of the fluid in the chamber 44, a piston 24 for pressing the punch 28 into the workpiece, and means for producing a shock wave in the fluid in chamber 44 to press the workpiece into a pattern 114 on the punch. In the embodiment, the shock wave is produced by an electric arc between electrodes 106, 108 connected to a bank of capacitors 116. Valves 52, 88 control the supply of fluid from a pump 64 for raising and lowering the ram 30 and piston 24. A further valve 70 controls the supply of fluid from low, and high, pressure pumps 84, 71 to the chamber 44. The low-pressure supply serves only to maintain the chamber full of fluid during intervals between forming operations. The high pressure supply is also connected to a pressure-regulating valve 78, the spring 102 of which may be adjusted by a cam 98 if it is desired to raise the pressure progressively in chamber 44 during entry of the punch 28. Fluid displaced by entry of the punch passes through valve 78 to a reservoir 86. The valves 70, 52, 88 may be controlled by solenoids. The workpiece may be a flat disc or a preformed part.
GB6073/65A 1964-05-15 1965-02-11 Method and apparatus for forming a workpiece Expired GB1032834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US367709A US3264854A (en) 1964-05-15 1964-05-15 Method and apparatus for forming presses

Publications (1)

Publication Number Publication Date
GB1032834A true GB1032834A (en) 1966-06-15

Family

ID=23448289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6073/65A Expired GB1032834A (en) 1964-05-15 1965-02-11 Method and apparatus for forming a workpiece

Country Status (3)

Country Link
US (1) US3264854A (en)
GB (1) GB1032834A (en)
NL (1) NL6504531A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3533256A (en) * 1969-01-21 1970-10-13 Ustav Pro Vyzkum Motorovych Vo Hydraulic press and protective insert therefor
US3681958A (en) * 1970-10-15 1972-08-08 Grumman Aerospace Corp High pressure forming press
JPS60133933A (en) * 1983-12-21 1985-07-17 Honda Motor Co Ltd Press forming method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696183A (en) * 1949-10-01 1954-12-07 Hydro Form Corp Press
US2783728A (en) * 1951-09-12 1957-03-05 Lake Erie Engineering Corp Apparatus for pressing sheet metal shapes
US2878767A (en) * 1954-01-04 1959-03-24 Cincinnati Milling Machine Co Forming press diaphragm

Also Published As

Publication number Publication date
US3264854A (en) 1966-08-09
NL6504531A (en) 1965-11-16

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