FR2374977A1 - Extruded metal yacht mast - has two tapered tubes simultaneously formed with round flange pressed onto dumb=bell section mandrel - Google Patents

Extruded metal yacht mast - has two tapered tubes simultaneously formed with round flange pressed onto dumb=bell section mandrel

Info

Publication number
FR2374977A1
FR2374977A1 FR7638832A FR7638832A FR2374977A1 FR 2374977 A1 FR2374977 A1 FR 2374977A1 FR 7638832 A FR7638832 A FR 7638832A FR 7638832 A FR7638832 A FR 7638832A FR 2374977 A1 FR2374977 A1 FR 2374977A1
Authority
FR
France
Prior art keywords
dumb
tubes
pressed onto
simultaneously formed
bell section
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.)
Withdrawn
Application number
FR7638832A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7638832A priority Critical patent/FR2374977A1/en
Publication of FR2374977A1 publication Critical patent/FR2374977A1/en
Withdrawn legal-status Critical Current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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
    • B21D5/015—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making tubes
    • 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
    • B21C37/10—Making tubes with riveted seams or with non-welded and non-soldered seams
    • 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
    • B21C37/151—Making tubes with multiple passages
    • 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
    • B21C37/155—Making tubes with non circular section
    • 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
    • B21C37/16—Making tubes with varying diameter in longitudinal direction
    • B21C37/18—Making tubes with varying diameter in longitudinal direction conical tubes
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/20—Bending sheet metal, not otherwise provided for

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The process for bending malleable sheet-metal produces two tapered tubes (30) simultaneously and may be used to form hollow metal masts for yachts. The tubes are formed side by side by pressing a circular hollow section flange (16) onto a dumb-bell section mandrel (18', 18"). At the completion of the pressing operation the two tubes (30) are joined by a diametric double-walled diaphragm which is then cut away. The hollow circular flange may be derived by bending a rectangular sheet, and the temporary diaphragm may increase in width from the foot to the head of the tubes. The process entails placing the mandrel (18) in the preformed flange (16) and then pressing it between two vertically opposed matrices (19, 20).
FR7638832A 1976-12-23 1976-12-23 Extruded metal yacht mast - has two tapered tubes simultaneously formed with round flange pressed onto dumb=bell section mandrel Withdrawn FR2374977A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7638832A FR2374977A1 (en) 1976-12-23 1976-12-23 Extruded metal yacht mast - has two tapered tubes simultaneously formed with round flange pressed onto dumb=bell section mandrel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7638832A FR2374977A1 (en) 1976-12-23 1976-12-23 Extruded metal yacht mast - has two tapered tubes simultaneously formed with round flange pressed onto dumb=bell section mandrel

Publications (1)

Publication Number Publication Date
FR2374977A1 true FR2374977A1 (en) 1978-07-21

Family

ID=9181447

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7638832A Withdrawn FR2374977A1 (en) 1976-12-23 1976-12-23 Extruded metal yacht mast - has two tapered tubes simultaneously formed with round flange pressed onto dumb=bell section mandrel

Country Status (1)

Country Link
FR (1) FR2374977A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163225A (en) * 1988-07-25 1992-11-17 Tube Technology Pty Ltd. Process for forming a structural member utilizing high frequency electrical induction or resistance welding
US5403986A (en) * 1990-09-28 1995-04-04 Tube Technology Pty. Ltd. Structural member and method of making by cold rolling followed by induction or resistance welding
US5501053A (en) * 1990-09-28 1996-03-26 Tube Technology Pty., Ltd. Interengageable structural members
CN116748898A (en) * 2023-08-15 2023-09-15 南通鸿烨健身器材有限公司 Stamping device with adjustable dumbbell piece

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163225A (en) * 1988-07-25 1992-11-17 Tube Technology Pty Ltd. Process for forming a structural member utilizing high frequency electrical induction or resistance welding
US5373679A (en) * 1988-07-25 1994-12-20 Tube Technology Pty Ltd Structural member and process for forming same
US5403986A (en) * 1990-09-28 1995-04-04 Tube Technology Pty. Ltd. Structural member and method of making by cold rolling followed by induction or resistance welding
US5501053A (en) * 1990-09-28 1996-03-26 Tube Technology Pty., Ltd. Interengageable structural members
CN116748898A (en) * 2023-08-15 2023-09-15 南通鸿烨健身器材有限公司 Stamping device with adjustable dumbbell piece
CN116748898B (en) * 2023-08-15 2023-11-24 南通鸿烨健身器材有限公司 Stamping device with adjustable dumbbell piece

Similar Documents

Publication Publication Date Title
IS2501A7 (en) Aluminum alloy, and a method of making cast aluminum strip for the production of cans and can lids
BE886429A (en) PROCESS FOR PRODUCING HIGH-STRENGTH COLD-ROLLED STEEL SHEET SUITABLE FOR PRESS SHAPING
FR2374977A1 (en) Extruded metal yacht mast - has two tapered tubes simultaneously formed with round flange pressed onto dumb=bell section mandrel
GB1542567A (en) Equipment for the corrective flattening of sheet metal saw blanks for circular saws
IE42527L (en) Butt jointing profiled plates
JPS5553844A (en) Manufacturing method of shadow mask for color television braun tube
EP0049313A3 (en) Method and device for bending corrugated or profiled sheet metal
JPS5522442A (en) Circular pipe forming method and device thereof
FR2353348A1 (en) Mfr. of sailing masts from blank sheet - has material folded round tapered mandrel with edges of sheet held by series of screws
JPS5794423A (en) Manufacture of sleeve for pipe joint
JPS5758922A (en) Forming device for curved plate having corrugation
GB2078821A (en) Lintel and method of manufacturing same
JPS5568121A (en) Manufacture of large size square steel pipe
JPS5373457A (en) Forge welding steel pipe manufacturing process
JPS551201A (en) Bead wire
JPS53119772A (en) Manufacture of force welded pipe
JPS5376917A (en) Hot rolled high carbon steel wire rod with good drawability and manufacture thereof
JPS5548449A (en) Method and device for forging of hollow bar
JPS5510380A (en) Manufacture of annular sheet
JPS5524754A (en) Method of manufacturing beer barrel
JPS53110938A (en) Joint welding positioner of steel pipe
SU715153A1 (en) Strip-rolling method
JPS569715A (en) Production of irregular shaped rim wire for spectacles
JPS58219030A (en) Manufacture of gutter
JPS5794434A (en) Tube expanding method in uoe tube making method

Legal Events

Date Code Title Description
ST Notification of lapse