FR2376708A1 - Press forming semi-toroidal sections from a blank - using a mandrel, in one operation - Google Patents

Press forming semi-toroidal sections from a blank - using a mandrel, in one operation

Info

Publication number
FR2376708A1
FR2376708A1 FR7700322A FR7700322A FR2376708A1 FR 2376708 A1 FR2376708 A1 FR 2376708A1 FR 7700322 A FR7700322 A FR 7700322A FR 7700322 A FR7700322 A FR 7700322A FR 2376708 A1 FR2376708 A1 FR 2376708A1
Authority
FR
France
Prior art keywords
mandrel
blank
press forming
forming semi
sections
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.)
Granted
Application number
FR7700322A
Other languages
French (fr)
Other versions
FR2376708B1 (en
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.)
BELLOIR
Original Assignee
BELLOIR
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 BELLOIR filed Critical BELLOIR
Priority to FR7700322A priority Critical patent/FR2376708A1/en
Publication of FR2376708A1 publication Critical patent/FR2376708A1/en
Application granted granted Critical
Publication of FR2376708B1 publication Critical patent/FR2376708B1/fr
Granted 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers
    • 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
    • B21C37/286—Making tube fittings for connecting pipes, e.g. U-pieces starting from sheet material

Abstract

Semi-toroidal sections are press-formed from a blank using a mandrel. The mandrel has a front face which is shaped to produce the exterior form of the section, the blank being pressed against the mandrel. The blank diameter is equal to or less than the diameter of the mandrel. The sections are press-formed in one operation in contrast to the two operations necessary in conventional press-forming operations.
FR7700322A 1977-01-07 1977-01-07 Press forming semi-toroidal sections from a blank - using a mandrel, in one operation Granted FR2376708A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7700322A FR2376708A1 (en) 1977-01-07 1977-01-07 Press forming semi-toroidal sections from a blank - using a mandrel, in one operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7700322A FR2376708A1 (en) 1977-01-07 1977-01-07 Press forming semi-toroidal sections from a blank - using a mandrel, in one operation

Publications (2)

Publication Number Publication Date
FR2376708A1 true FR2376708A1 (en) 1978-08-04
FR2376708B1 FR2376708B1 (en) 1979-04-20

Family

ID=9185219

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7700322A Granted FR2376708A1 (en) 1977-01-07 1977-01-07 Press forming semi-toroidal sections from a blank - using a mandrel, in one operation

Country Status (1)

Country Link
FR (1) FR2376708A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0620380A1 (en) * 1993-04-14 1994-10-19 Vibratech, Inc. A torsional vibration damper and a method for manufacturing the same
EP1512470A1 (en) * 2003-09-08 2005-03-09 The Boeing Company Adaptable mandrel for spin forming
ITPN20100062A1 (en) * 2010-10-20 2012-04-21 Free Spirits S R L PROCEDURE FOR THE MANUFACTURE OF METALLIC TUBULAR CURVES AND TUBULAR CURVES OBTAINED WITH THIS PROCEDURE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2335887A (en) * 1941-05-02 1943-12-07 James J Smith Method of forming curved channel members, elbows, and u-bends
FR1030112A (en) * 1950-12-26 1953-06-10 New embossing process
FR1039548A (en) * 1951-07-10 1953-10-07 Method of shaping a metal blank

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2335887A (en) * 1941-05-02 1943-12-07 James J Smith Method of forming curved channel members, elbows, and u-bends
FR1030112A (en) * 1950-12-26 1953-06-10 New embossing process
FR1039548A (en) * 1951-07-10 1953-10-07 Method of shaping a metal blank

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0620380A1 (en) * 1993-04-14 1994-10-19 Vibratech, Inc. A torsional vibration damper and a method for manufacturing the same
EP1512470A1 (en) * 2003-09-08 2005-03-09 The Boeing Company Adaptable mandrel for spin forming
US6955283B2 (en) 2003-09-08 2005-10-18 The Boeing Company Adaptable mandrel for spin forming
CN100448564C (en) * 2003-09-08 2009-01-07 波音公司 Adaptable mandrel for spin forming
ITPN20100062A1 (en) * 2010-10-20 2012-04-21 Free Spirits S R L PROCEDURE FOR THE MANUFACTURE OF METALLIC TUBULAR CURVES AND TUBULAR CURVES OBTAINED WITH THIS PROCEDURE

Also Published As

Publication number Publication date
FR2376708B1 (en) 1979-04-20

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Legal Events

Date Code Title Description
TP Transmission of property
CA Change of address
CN Change in juridical nature
TP Transmission of property
ST Notification of lapse