US3890819A - Apparatus for deforming sheet metal blanks by fluid pressure - Google Patents

Apparatus for deforming sheet metal blanks by fluid pressure Download PDF

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Publication number
US3890819A
US3890819A US382506A US38250673A US3890819A US 3890819 A US3890819 A US 3890819A US 382506 A US382506 A US 382506A US 38250673 A US38250673 A US 38250673A US 3890819 A US3890819 A US 3890819A
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pressure
annular
clamping
clamping means
central portion
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US382506A
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Bruno Deluca
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Centro Sperimentale Metallurgico SpA
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Centro Sperimentale Metallurgico SpA
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    • 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
    • B21D26/021—Deforming sheet bodies
    • B21D26/025—Means for controlling the clamping or opening of the moulds
    • 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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/04—Blank holders; Mounting means therefor
    • B21D24/08—Pneumatically or hydraulically loaded blank holders
    • 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
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49805—Shaping by direct application of fluent pressure

Definitions

  • Another object of the present invention is the provision of such apparatus, in which the peripheral portions of the blank are gripped with a pressure that varies as the pressure with which the central portion of the blank is deformed.
  • apparatus comprising an outer body 1 which is a figure of revolution and is generally cylindrical or cup-shaped.
  • a blank holder 2 which is also a figure of revolution, is axially slidably disposed within body 1.
  • Piston 3 slides coaxially with a fluidtight fit within blank holder 2.
  • An annular holding die 4 which is also a figure of revolution, is disposed within body 1 in coaxial superposed relation with holder 2 and piston 3, and has an outwardly directed peripheral flange 4 which is received beneath an inwardly directed annular flange 1 at the upper extremity of body 1, and a central opening 4".
  • Die 4 is releasable from the engaged relationship with body 1 which is shown in the drawing, by means of a bayonnet lock or detachable interengaging portions, or other conventional means (not shown). In this way, the assembly can be opened for the insertion and removal of workpieces.
  • Holder 2 has a flat annular surface confronting die 4, which is faced with a gasket 5 of a material softer than either holder 2 or the metal sheet to be deformed.
  • At least one opening 6 extends through the cylindrical axially-extending stem of holder 2 to convey to the radially outer side of holder 2 the same fluid pressure that acts on the radially inner side of holder 2 and on the circular blank 7.
  • holder 2 is provided with an axially extending passageway 8; and the radially inner end of the hole or holes 6 communicates with the passageway 8, while the radially outer end of hole or holes 6 communicates with an annular cylinder chamber 9 defined between body 1 and holder 2.
  • Body 1 is bolted to a support (not shown) by bolts or other fasteners (not shown) that pass through a flange l thereon.
  • the cavity of body 1 in which the head 11 of holder 2 is disposed is cup-shaped and of a depth greater than the depth of the head of holder 2.
  • Seals 12 provide slidably sealed contact between piston 3 and the supporting side walls of passageway'8, and between holder 2 and body 1 on opposite sides of chamber 9.
  • a sheet metal blank in the form ofa circular workpiece 7 is placed on gasket and die 4 is returned to the position shown in the drawing.
  • Holder 2 can then be urged against the workpiece by any desired means (not shown), after which piston 3 is advanced upwardly as seen in the drawing.
  • Passageway 8 and chamber 9 are filled with hydraulic fluid such as oil, whose pressure is increased by the upward movement of piston 3.
  • This upward movement has two effects:
  • the pressure imparted to the hydraulic fluid causes workpiece 7 to deform and bulge upwardly into opening 4", as seen in the drawing; and also the pressure of the hydraulic fluid transmitted through hole or holes 6 to chamber 9, causes holder 2 to advance in the manner of a piston, thereby more tightly clamping the annular peripheral portions of the workpiece against radially inward movement.
  • the area of chamber 9, measured in a plane perpendicular to the axis of the apparatus should be larger than the area of workpiece 7 that is exposed to the fluid by passageway 8, the broad range of ratios of these two areas being 1:1 to l0:l.
  • Apparatus for deforming only a central portion of sheet material by fluid pressure comprising means to clamp a peripherial portion of said material entirely about said central portion while leaving said central portion exposed, means mounting said clamping means for free and unimpeded movement toward said material, means to apply the pressure of a fluid under pressure to said exposed central portion of said material to deform only said central portion of said material, and means to apply said pressure also to said clamping means so that the force with which said peripheral portion is clamped by said clamping means varies directly as said pressure over the entire range of said pressure thereby to maintain said peripheral portion against substantial radially inward movement over said entire range of pressure.
  • said clamping means comprising an annular member, means mounting said annular member for movement toward and away from the material to be clamped, and means for applying said fluid to said material centrally of said annular member.
  • clamping means having a central opening through which said fluid is applied to said material, said applying means comprising at least one opening through said clamping means communicating between said annular chamber and said central opening.
  • said clamping member having a head thereon that defines said annular chamber between said head and the bottom of a cup-shaped recess Within said body.

Abstract

A sheet metal blank is clamped between opposed annular members and deformed in its central area by fluid pressure applied thereto. The clamping members are urged together by the same fluid pressure; and to this end, one of the clamping members is mushroom-shaped with the head of the mushroom comprising a piston urged in a clamping direction by fluid pressure applied by an annular cylinder chamber that communicates with a central chamber whose fluid deforms the blank. In this way, the annular marginal portions of the blank are tightly gripped and only the central exposed portion of the blank is deformed.

Description

United States Patent [1 1 [111 3,890,819
DeLuca June 24, 1975 APPARATUS FOR DEFORMING SHEET 3,572,071 3/1971 Semplak et al. 72/54 METAL BLANKS BY FLUID PRESSURE 3,596,485 8/1971 Burk 3,751,962 8/1973 CvaChO et al 72/350 Inventor: Bruno DeLuca, Rome, Italy Centro Sperimentale Metallurgico S.p.A., Rome, Italy Filed: July 25, 1973 Appl. N0.: 382,506
Assignee:
Foreign Application Priority Data July 25, I972 Italy 51741/72 References Cited UNITED STATES PATENTS 9/1964 DeVlieg et al 29/421 3/1968 Reynolds 72/57 Primary Examiner-Richard J. Herbst Attorney, Agent, or Firm-Young & Thompson [5 7 ABSTRACT A sheet metal blank is clamped between opposed annular members and deformed in its central area by fluid pressure applied thereto. The clamping members are urged together by the same fluid pressure; and to this end, one of the clamping members is mushroomshaped with the head of the mushroom comprising a piston urged in a clamping direction by fluid pressure applied by an annular cylinder chamber that communicates with a central chamber whose fluid deforms the blank. In this way, the annular marginal portions of the blank are tightly gripped and only the central exposed portion of the blank is deformed.
7 Claims, 1 Drawing Figure APPARATUS FOR DEFORMING SHEET METAL BLANKS BY FLUID PRESSURE The present invention relates to deforming sheet metal blanks under fluid pressure, both for the production of formed workpieces and also for laboratory testmg.
One such method of laboratory testing is to apply hydraulic pressure to a test blank to cause a circular or elliptical central portion thereof to bulge. However, the hydraulic pressure machines designed for this purpose heretofore have suffered from the disadvantage that portions of the blank outside the central test area may also be drawn radially inwardly, thereby invalidating the results of the test. The same problem of course is detrimental to the production of workpieces.
Accordingly, it is an object of the present invention to provide apparatus for deforming sheet metal blanks under fluid pressure, in which only the exposed central portion of the blank is deformed.
Another object of the present invention is the provision of such apparatus, in which the peripheral portions of the blank are gripped with a pressure that varies as the pressure with which the central portion of the blank is deformed.
Finally, it is an object of the present invention to provide such apparatus, which will be relatively simple and inexpensive to manufacture, easy to operate, maintain and repair, and rugged and durable in use.
Other objects, features and advantages of the present invention will become apparent from a consideration of the following description, taken in connection with the accompanying drawing, which is a cross-sectional view of apparatus according to the present invention.
Referring now to the drawing in greater detail, there is shown apparatus according to the present invention, comprising an outer body 1 which is a figure of revolution and is generally cylindrical or cup-shaped. A blank holder 2, which is also a figure of revolution, is axially slidably disposed within body 1. Piston 3 slides coaxially with a fluidtight fit within blank holder 2. An annular holding die 4, which is also a figure of revolution, is disposed within body 1 in coaxial superposed relation with holder 2 and piston 3, and has an outwardly directed peripheral flange 4 which is received beneath an inwardly directed annular flange 1 at the upper extremity of body 1, and a central opening 4". Die 4 is releasable from the engaged relationship with body 1 which is shown in the drawing, by means of a bayonnet lock or detachable interengaging portions, or other conventional means (not shown). In this way, the assembly can be opened for the insertion and removal of workpieces.
Holder 2 has a flat annular surface confronting die 4, which is faced with a gasket 5 of a material softer than either holder 2 or the metal sheet to be deformed.
At least one opening 6 extends through the cylindrical axially-extending stem of holder 2 to convey to the radially outer side of holder 2 the same fluid pressure that acts on the radially inner side of holder 2 and on the circular blank 7. To this end, holder 2 is provided with an axially extending passageway 8; and the radially inner end of the hole or holes 6 communicates with the passageway 8, while the radially outer end of hole or holes 6 communicates with an annular cylinder chamber 9 defined between body 1 and holder 2.
Body 1 is bolted to a support (not shown) by bolts or other fasteners (not shown) that pass through a flange l thereon.
The cavity of body 1 in which the head 11 of holder 2 is disposed is cup-shaped and of a depth greater than the depth of the head of holder 2. Seals 12 provide slidably sealed contact between piston 3 and the supporting side walls of passageway'8, and between holder 2 and body 1 on opposite sides of chamber 9.
In operation, with the die 4 removed, a sheet metal blank in the form ofa circular workpiece 7 is placed on gasket and die 4 is returned to the position shown in the drawing. Holder 2 can then be urged against the workpiece by any desired means (not shown), after which piston 3 is advanced upwardly as seen in the drawing. Passageway 8 and chamber 9 are filled with hydraulic fluid such as oil, whose pressure is increased by the upward movement of piston 3. This upward movement has two effects: The pressure imparted to the hydraulic fluid causes workpiece 7 to deform and bulge upwardly into opening 4", as seen in the drawing; and also the pressure of the hydraulic fluid transmitted through hole or holes 6 to chamber 9, causes holder 2 to advance in the manner of a piston, thereby more tightly clamping the annular peripheral portions of the workpiece against radially inward movement. To this end, it is preferred that the area of chamber 9, measured in a plane perpendicular to the axis of the apparatus, should be larger than the area of workpiece 7 that is exposed to the fluid by passageway 8, the broad range of ratios of these two areas being 1:1 to l0:l.
The higher the pressure against the exposed central portion of the workpiece, the greater will be the force with which holder 2 clamps the peripheral portions of the workpiece; and in this way, the tendency of the workpiece to be drawn radially inwardly toward its center, upon deformation of the central portion in an axial direction, is effectively countered. At the same time, it has not been necessary to provide the clamping surfaces of holder 2 and die 4 with ridges or deformations or other asperities that would themselves change the shape of the workpiece.
To release the formed workpiece, or to discontinue the test in the case of testing apparatus, it is necessary only to back off the piston 3, whereupon the fluid pressure is relieved and die 4 can be removed upwardly, after which the formed workpiece or the tested specimen can be removed and replaced with an undeformed or untested piece.
From a consideration of the foregoing disclosure, therefore, it will be evident that all of the initially recited objects of the present invention have been achieved.
Although the present invention has been described and illustrated in connection with a preferred embodiment, it is to be understood that modifications and variations may be resorted to without departing from the spirit of the invention, as those skilled in this art will readily understand. Such modifications and variations are considered to be within the purview and scope of the present invention as defined by the appended claims.
Having described my invention, I claim:
1. Apparatus for deforming only a central portion of sheet material by fluid pressure, comprising means to clamp a peripherial portion of said material entirely about said central portion while leaving said central portion exposed, means mounting said clamping means for free and unimpeded movement toward said material, means to apply the pressure of a fluid under pressure to said exposed central portion of said material to deform only said central portion of said material, and means to apply said pressure also to said clamping means so that the force with which said peripheral portion is clamped by said clamping means varies directly as said pressure over the entire range of said pressure thereby to maintain said peripheral portion against substantial radially inward movement over said entire range of pressure.
2. Apparatus as claimed in claim 1, said clamping means comprising an annular member, means mounting said annular member for movement toward and away from the material to be clamped, and means for applying said fluid to said material centrally of said annular member.
3. Apparatus as claimed in claim 2, and an annular die on the side of said material opposite said clamping member, said annular die having a central opening for receiving material deformed by said pressure.
4. Apparatus as claimed in claim 1, and a hollow body within which said clamping means is mounted for sliding movement toward and away from said material, said clamping means and said hollow body defining between them an annular cylinder chamber, and means for applying said pressure within said cylinder chamber to urge said clamping means in the direction of said material.
5. Apparatus as claimed in claim 4, said clamping means having a central opening through which said fluid is applied to said material, said applying means comprising at least one opening through said clamping means communicating between said annular chamber and said central opening.
6. Apparatus as claimed in claim 4, the area of said annular cylinder chamber in a plane perpendicular to the axis thereof being greater than the area of said material exposed to said pressure.
7. Apparatus as claimed in claim 4, said clamping member having a head thereon that defines said annular chamber between said head and the bottom of a cup-shaped recess Within said body.

Claims (7)

1. Apparatus for deforming only a central portion of sheet material by fluid pressure, comprising means to clamp a peripherial portion of said material entirely about said central portion while leaving said central portion exposed, means mounting said clamping means for free and unimpeded movement toward said material, meAns to apply the pressure of a fluid under pressure to said exposed central portion of said material to deform only said central portion of said material, and means to apply said pressure also to said clamping means so that the force with which said peripheral portion is clamped by said clamping means varies directly as said pressure over the entire range of said pressure thereby to maintain said peripheral portion against substantial radially inward movement over said entire range of pressure.
2. Apparatus as claimed in claim 1, said clamping means comprising an annular member, means mounting said annular member for movement toward and away from the material to be clamped, and means for applying said fluid to said material centrally of said annular member.
3. Apparatus as claimed in claim 2, and an annular die on the side of said material opposite said clamping member, said annular die having a central opening for receiving material deformed by said pressure.
4. Apparatus as claimed in claim 1, and a hollow body within which said clamping means is mounted for sliding movement toward and away from said material, said clamping means and said hollow body defining between them an annular cylinder chamber, and means for applying said pressure within said cylinder chamber to urge said clamping means in the direction of said material.
5. Apparatus as claimed in claim 4, said clamping means having a central opening through which said fluid is applied to said material, said applying means comprising at least one opening through said clamping means communicating between said annular chamber and said central opening.
6. Apparatus as claimed in claim 4, the area of said annular cylinder chamber in a plane perpendicular to the axis thereof being greater than the area of said material exposed to said pressure.
7. Apparatus as claimed in claim 4, said clamping member having a head thereon that defines said annular chamber between said head and the bottom of a cup-shaped recess within said body.
US382506A 1972-07-25 1973-07-25 Apparatus for deforming sheet metal blanks by fluid pressure Expired - Lifetime US3890819A (en)

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IT51741/72A IT965936B (en) 1972-07-25 1972-07-25 TIGHTENING DEVICE FOR SHEETS

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Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102167A (en) * 1976-01-16 1978-07-25 Black, Sivalls & Bryson, Inc. Method of manufacturing integral fluid pressure rupturable apparatus
US4441350A (en) * 1981-12-15 1984-04-10 Bs&B Safety Systems, Inc. Scored reverse buckling rupture disk manufacturing method
US4458516A (en) * 1983-02-11 1984-07-10 Bs&B Safety Systems, Inc. Method for manufacturing rupture disks
US4481850A (en) * 1981-12-15 1984-11-13 Bs&B Safety Systems, Inc. Scored reverse buckling rupture disk apparatus
US4492103A (en) * 1983-02-11 1985-01-08 Bs&B Safety Systems, Inc. Apparatus for manufacturing rupture disks
US4597151A (en) * 1980-02-04 1986-07-01 Solartron Electronics, Inc. Fluid pressure transmitting diaphragm assembly and method of manufacture
US4731617A (en) * 1986-08-19 1988-03-15 Gray Robert E Apparatus and method for making paraboloidal surfaces
US5157969A (en) * 1989-11-29 1992-10-27 Armco Steel Co., L.P. Apparatus and method for hydroforming sheet metal
US5410132A (en) * 1991-10-15 1995-04-25 The Boeing Company Superplastic forming using induction heating
US5587098A (en) * 1991-04-05 1996-12-24 The Boeing Company Joining large structures using localized induction heating
US5591370A (en) * 1991-04-05 1997-01-07 The Boeing Company System for consolidating organic matrix composites using induction heating
US5599472A (en) * 1991-04-05 1997-02-04 The Boeing Company Resealable retort for induction processing of organic matrix composites or metals
US5624594A (en) * 1991-04-05 1997-04-29 The Boeing Company Fixed coil induction heater for thermoplastic welding
US5641422A (en) * 1991-04-05 1997-06-24 The Boeing Company Thermoplastic welding of organic resin composites using a fixed coil induction heater
US5645744A (en) * 1991-04-05 1997-07-08 The Boeing Company Retort for achieving thermal uniformity in induction processing of organic matrix composites or metals
US5683607A (en) * 1991-10-15 1997-11-04 The Boeing Company β-annealing of titanium alloys
US5705794A (en) * 1991-10-15 1998-01-06 The Boeing Company Combined heating cycles to improve efficiency in inductive heating operations
US5710414A (en) * 1991-04-05 1998-01-20 The Boeing Company Internal tooling for induction heating
US5723849A (en) * 1991-04-05 1998-03-03 The Boeing Company Reinforced susceptor for induction or resistance welding of thermoplastic composites
US5728309A (en) * 1991-04-05 1998-03-17 The Boeing Company Method for achieving thermal uniformity in induction processing of organic matrix composites or metals
US5793024A (en) * 1991-04-05 1998-08-11 The Boeing Company Bonding using induction heating
US5847375A (en) * 1991-04-05 1998-12-08 The Boeing Company Fastenerless bonder wingbox
US5865054A (en) * 1989-08-24 1999-02-02 Aquaform Inc. Apparatus and method for forming a tubular frame member
US5914064A (en) * 1991-10-15 1999-06-22 The Boeing Company Combined cycle for forming and annealing
US6087640A (en) * 1991-10-15 2000-07-11 The Boeing Company Forming parts with complex curvature
GB2354730A (en) * 1999-09-28 2001-04-04 Neutron Holdings Ltd Apparatus for, and method of, moulding an article
US20040256383A1 (en) * 2003-06-18 2004-12-23 Fischer John R. Apparatus and methods for single sheet forming using induction heating
GB2440596A (en) * 2006-07-31 2008-02-06 Stephen Stanger Moore Ferrous fungi/Metal mushrooms
CN103464576A (en) * 2013-09-23 2013-12-25 上海电机学院 Device and method for liquid-supplementing expansion of retaining ring of turbine generator

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DE3704349A1 (en) * 1987-02-12 1988-08-25 Haar Maschbau Alfons TOOLS FOR DRAWING SHEET PARTS
DE4309317A1 (en) * 1993-03-23 1994-09-29 Fraunhofer Ges Forschung Method and apparatus for the free forming of semi-finished products
DE19952104A1 (en) * 1999-10-29 2001-05-03 Schuler Smg Gmbh & Co Kg Metal sheet deforming device, access aperture of lower tool of which is part of pressure cavity of piston-cylinder unit

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US3373585A (en) * 1964-09-21 1968-03-19 Reynolds Tobacco Co R Sheet metal shaping apparatus and method
US3572071A (en) * 1968-06-07 1971-03-23 Bell Telephone Labor Inc Parabolic reflector antennas
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Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102167A (en) * 1976-01-16 1978-07-25 Black, Sivalls & Bryson, Inc. Method of manufacturing integral fluid pressure rupturable apparatus
US4597151A (en) * 1980-02-04 1986-07-01 Solartron Electronics, Inc. Fluid pressure transmitting diaphragm assembly and method of manufacture
US4441350A (en) * 1981-12-15 1984-04-10 Bs&B Safety Systems, Inc. Scored reverse buckling rupture disk manufacturing method
US4481850A (en) * 1981-12-15 1984-11-13 Bs&B Safety Systems, Inc. Scored reverse buckling rupture disk apparatus
US4458516A (en) * 1983-02-11 1984-07-10 Bs&B Safety Systems, Inc. Method for manufacturing rupture disks
US4492103A (en) * 1983-02-11 1985-01-08 Bs&B Safety Systems, Inc. Apparatus for manufacturing rupture disks
US4731617A (en) * 1986-08-19 1988-03-15 Gray Robert E Apparatus and method for making paraboloidal surfaces
US5865054A (en) * 1989-08-24 1999-02-02 Aquaform Inc. Apparatus and method for forming a tubular frame member
US5157969A (en) * 1989-11-29 1992-10-27 Armco Steel Co., L.P. Apparatus and method for hydroforming sheet metal
US5372026A (en) * 1989-11-29 1994-12-13 Armco Steel Company Apparatus and method for hydroforming sheet metal
US5591370A (en) * 1991-04-05 1997-01-07 The Boeing Company System for consolidating organic matrix composites using induction heating
US5683608A (en) * 1991-04-05 1997-11-04 The Boeing Company Ceramic die for induction heating work cells
US5847375A (en) * 1991-04-05 1998-12-08 The Boeing Company Fastenerless bonder wingbox
US5591369A (en) * 1991-04-05 1997-01-07 The Boeing Company Method and apparatus for consolidating organic matrix composites using induction heating
US5599472A (en) * 1991-04-05 1997-02-04 The Boeing Company Resealable retort for induction processing of organic matrix composites or metals
US5624594A (en) * 1991-04-05 1997-04-29 The Boeing Company Fixed coil induction heater for thermoplastic welding
US5641422A (en) * 1991-04-05 1997-06-24 The Boeing Company Thermoplastic welding of organic resin composites using a fixed coil induction heater
US5645744A (en) * 1991-04-05 1997-07-08 The Boeing Company Retort for achieving thermal uniformity in induction processing of organic matrix composites or metals
US6040563A (en) * 1991-04-05 2000-03-21 The Boeing Company Bonded assemblies
US5587098A (en) * 1991-04-05 1996-12-24 The Boeing Company Joining large structures using localized induction heating
US6211497B1 (en) 1991-04-05 2001-04-03 The Boeing Company Induction consolidation system
US7126096B1 (en) 1991-04-05 2006-10-24 Th Boeing Company Resistance welding of thermoplastics in aerospace structure
US5710414A (en) * 1991-04-05 1998-01-20 The Boeing Company Internal tooling for induction heating
US5723849A (en) * 1991-04-05 1998-03-03 The Boeing Company Reinforced susceptor for induction or resistance welding of thermoplastic composites
US5728309A (en) * 1991-04-05 1998-03-17 The Boeing Company Method for achieving thermal uniformity in induction processing of organic matrix composites or metals
US5747179A (en) * 1991-04-05 1998-05-05 The Boeing Company Pack for inductively consolidating an organic matrix composite
US5793024A (en) * 1991-04-05 1998-08-11 The Boeing Company Bonding using induction heating
US5700995A (en) * 1991-10-15 1997-12-23 The Boeing Company Superplastically formed part
US5410132A (en) * 1991-10-15 1995-04-25 The Boeing Company Superplastic forming using induction heating
US5705794A (en) * 1991-10-15 1998-01-06 The Boeing Company Combined heating cycles to improve efficiency in inductive heating operations
US5914064A (en) * 1991-10-15 1999-06-22 The Boeing Company Combined cycle for forming and annealing
US5683607A (en) * 1991-10-15 1997-11-04 The Boeing Company β-annealing of titanium alloys
US6087640A (en) * 1991-10-15 2000-07-11 The Boeing Company Forming parts with complex curvature
US5571436A (en) * 1991-10-15 1996-11-05 The Boeing Company Induction heating of composite materials
US5821506A (en) * 1991-10-15 1998-10-13 The Boeing Company Superplastically formed part
GB2354730A (en) * 1999-09-28 2001-04-04 Neutron Holdings Ltd Apparatus for, and method of, moulding an article
GB2354730B (en) * 1999-09-28 2001-09-12 Neutron Holdings Ltd Apparatus for, and method of, moulding an article
US20040256383A1 (en) * 2003-06-18 2004-12-23 Fischer John R. Apparatus and methods for single sheet forming using induction heating
US6914225B2 (en) 2003-06-18 2005-07-05 The Boeing Company Apparatus and methods for single sheet forming using induction heating
GB2440596A (en) * 2006-07-31 2008-02-06 Stephen Stanger Moore Ferrous fungi/Metal mushrooms
CN103464576A (en) * 2013-09-23 2013-12-25 上海电机学院 Device and method for liquid-supplementing expansion of retaining ring of turbine generator

Also Published As

Publication number Publication date
DE2337113A1 (en) 1974-02-07
FR2193660A1 (en) 1974-02-22
FR2193660B3 (en) 1976-07-09
IT965936B (en) 1974-02-11
BE802743A (en) 1973-11-16

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