GB1280252A - Liquid pressure bulge forming apparatus - Google Patents

Liquid pressure bulge forming apparatus

Info

Publication number
GB1280252A
GB1280252A GB3816/70A GB381670A GB1280252A GB 1280252 A GB1280252 A GB 1280252A GB 3816/70 A GB3816/70 A GB 3816/70A GB 381670 A GB381670 A GB 381670A GB 1280252 A GB1280252 A GB 1280252A
Authority
GB
United Kingdom
Prior art keywords
pipe
pump
pressure
rods
cam
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
GB3816/70A
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Publication of GB1280252A publication Critical patent/GB1280252A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/29—Making branched pieces, e.g. T-pieces
    • B21C37/294—Forming collars by compressing a fluid or a yieldable or resilient mass in the tube
    • 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
    • B21D26/033—Deforming tubular bodies
    • B21D26/039—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
    • 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
    • B21D26/033—Deforming tubular bodies
    • B21D26/041—Means for controlling fluid parameters, e.g. pressure or temperature
    • 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
    • B21D26/033—Deforming tubular bodies
    • B21D26/043—Means for controlling the axial pusher
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

1280252 Making pipe fittings AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY 27 Jan 1970 [29 Jan 1969] 3816/70 Headings B3A and B3Q Apparatus for the hydraulic bulging of a pipe 1, e.g. to form a T-joint, corrugated pipe or a bicycle lug, comprises a split die 2, 2<SP>1</SP>, a pair of piston rods 4, 4<SP>1</SP>, means for preventing break of the seal between the rods 4, 4<SP>1</SP> and the pipe 1 when the bulging pressure is increased, and means for regulating pressure in the pipe to prevent rupture. The rods 4, 4<SP>1</SP> are moved by levers 7, 7<SP>1</SP> which are controlled, through an hydraulic actuator 19, 20, by a symmetrical cam if the ends of the pipe 1 are equal, or by an asymetrical cam if the ends are unequal. Guides 13<SP>1</SP> for an end of the cam include pressure sensors 30 set to stop the press upon registering a predetermined unbalance pressure. A pump 26 fills the pipe, air escaping through a valve 28. The pressure in the pipe is increased by a pump 21, acting through an intensifier 22, and that on the end of rods 4, 4<SP>1</SP> by a pump 31 acting against a variable relief valve 38, Fig. 4, which is controlled by the pressure of pump 21. This is effected by a lever 37 one side of which is engaged at a predetermined point, depending on pipe-size, by a cylinder 32 connected to the pump 21, and the other side by a buffer cylinder 39 bearing on the relief valve. Pressure applied by the pump 21 is regulated by a valve 33 controlled by a cam 42. The die-section 2 is operated by a piston 3, and finished work is ejected by a piston 34.
GB3816/70A 1969-01-29 1970-01-27 Liquid pressure bulge forming apparatus Expired GB1280252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44006516A JPS4841427B1 (en) 1969-01-29 1969-01-29

Publications (1)

Publication Number Publication Date
GB1280252A true GB1280252A (en) 1972-07-05

Family

ID=11640554

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3816/70A Expired GB1280252A (en) 1969-01-29 1970-01-27 Liquid pressure bulge forming apparatus

Country Status (3)

Country Link
US (1) US3654785A (en)
JP (1) JPS4841427B1 (en)
GB (1) GB1280252A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2472429A1 (en) * 1979-12-27 1981-07-03 Mo Aviat I Ribbed wall tube MFG. process - has axially embracing air presses with pressure controllers operating in sync. with hydraulic system filling pipe cavity under pressure (SE
FR2472428A1 (en) * 1979-12-27 1981-07-03 Mo Aviat I Pipe corrugation plant - clamps pipe for filling with water and uses variable pressure for its compression
US5353618A (en) * 1989-08-24 1994-10-11 Armco Steel Company, L.P. Apparatus and method for forming a tubular frame member
US6006567A (en) * 1997-05-15 1999-12-28 Aquaform Inc Apparatus and method for hydroforming
US6502822B1 (en) 1997-05-15 2003-01-07 Aquaform, Inc. Apparatus and method for creating a seal on an inner wall of a tube for hydroforming

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1530000A (en) * 1924-03-27 1925-03-17 John J Kauffman Drawing die
US3072085A (en) * 1959-05-08 1963-01-08 American Radiator & Standard Method and apparatus for producing hollow articles
US3350905A (en) * 1963-12-21 1967-11-07 Agency Ind Science Techn Liquid pressure bulge forming apparatus
US3335590A (en) * 1964-08-07 1967-08-15 Boeing Co Accurate control system for axial load bulge forming
NL136743C (en) * 1965-06-03

Also Published As

Publication number Publication date
JPS4841427B1 (en) 1973-12-06
US3654785A (en) 1972-04-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee