FR2326993A1 - Drawing of metal tube of tapering wall thickness - uses conical drawing plate insert which is advanced as tube is drawn to produce tennis racket shaft - Google Patents

Drawing of metal tube of tapering wall thickness - uses conical drawing plate insert which is advanced as tube is drawn to produce tennis racket shaft

Info

Publication number
FR2326993A1
FR2326993A1 FR7531135A FR7531135A FR2326993A1 FR 2326993 A1 FR2326993 A1 FR 2326993A1 FR 7531135 A FR7531135 A FR 7531135A FR 7531135 A FR7531135 A FR 7531135A FR 2326993 A1 FR2326993 A1 FR 2326993A1
Authority
FR
France
Prior art keywords
tube
insert
drawing plate
wall thickness
drawn
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
FR7531135A
Other languages
French (fr)
Other versions
FR2326993B1 (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.)
Degond SA Ets J
Original Assignee
Degond SA Ets J
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 Degond SA Ets J filed Critical Degond SA Ets J
Priority to FR7531135A priority Critical patent/FR2326993A1/en
Publication of FR2326993A1 publication Critical patent/FR2326993A1/en
Application granted granted Critical
Publication of FR2326993B1 publication Critical patent/FR2326993B1/fr
Granted 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
    • B21C37/16—Making tubes with varying diameter in longitudinal direction
    • 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
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
    • 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
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/06—Dies; Selection of material therefor; Cleaning thereof with adjustable section

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The process for drawing metal tube of tapering wall thickness (13b) uses a tapered or stepped drawing plate insert (6), with the relative axial disposition of the drawing plate (4) and insert (6) subject to controlled adjustment. The method may be applied to the prodn of tubular metal tennis racket shafts, and obviates electrolytic tapering. The drawing plate (4) and the insert (6) are mounted on a drawing bed with a traction carriage pulling the leading end of the tube (5), the insert anchored to the bed beyond the trailing rube end, and the drawing plate in an intermediary position. The insert may comprise a rod (7) which fits inside the tube (5) and has a part-conical or step diametered nose. The drawing plate (4) may be mounted in a cage holder (3) on a slide. The slide and thus the drawing plate may be displaced axially by a jack operated lever cam. Micrometers may be deployed to monitor resultant wall thickness, and the variation in wall thickness is effected by progressively advancing the insert (6) as the tube (5) is drawn.
FR7531135A 1975-10-10 1975-10-10 Drawing of metal tube of tapering wall thickness - uses conical drawing plate insert which is advanced as tube is drawn to produce tennis racket shaft Granted FR2326993A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7531135A FR2326993A1 (en) 1975-10-10 1975-10-10 Drawing of metal tube of tapering wall thickness - uses conical drawing plate insert which is advanced as tube is drawn to produce tennis racket shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7531135A FR2326993A1 (en) 1975-10-10 1975-10-10 Drawing of metal tube of tapering wall thickness - uses conical drawing plate insert which is advanced as tube is drawn to produce tennis racket shaft

Publications (2)

Publication Number Publication Date
FR2326993A1 true FR2326993A1 (en) 1977-05-06
FR2326993B1 FR2326993B1 (en) 1979-06-15

Family

ID=9161075

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7531135A Granted FR2326993A1 (en) 1975-10-10 1975-10-10 Drawing of metal tube of tapering wall thickness - uses conical drawing plate insert which is advanced as tube is drawn to produce tennis racket shaft

Country Status (1)

Country Link
FR (1) FR2326993A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481153A1 (en) * 1980-04-24 1981-10-30 Mannesmann Ag Drawing ring and mandrel for variable thickness tube - has stepped drawing ring of min. ID to suit mandrel dia.
US4726211A (en) * 1984-04-16 1988-02-23 Sanwa Kokan Kabushiki Kaishas Method of cold drawing seamless metal tubes each having an upset portion on each end
US5119662A (en) * 1984-04-16 1992-06-09 Sanwa Kokan Co., Ltd. Methods for cold drawing seamless metal tubes each having an upset portion on each end
FR2697764A1 (en) * 1992-11-09 1994-05-13 New Conimast International Fabrication of variable diameter pillar for use as lamp post - by reducing, over predetermined length, one of ends of pillar of first diameter to second smaller diameter to produce stepped post
EP0663248A1 (en) * 1994-01-12 1995-07-19 The Torrington Company Method of making a camshaft
US6134937A (en) * 1996-05-03 2000-10-24 True Temper Sports, Inc. Golf club and shaft therefor and method of making same
GB2529844A (en) * 2014-09-03 2016-03-09 Reynolds Technology Ltd Forming butted tubes
CN109877594A (en) * 2019-04-19 2019-06-14 东莞市方荣精机工业有限公司 A kind of rectangle drawbench

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481153A1 (en) * 1980-04-24 1981-10-30 Mannesmann Ag Drawing ring and mandrel for variable thickness tube - has stepped drawing ring of min. ID to suit mandrel dia.
US4726211A (en) * 1984-04-16 1988-02-23 Sanwa Kokan Kabushiki Kaishas Method of cold drawing seamless metal tubes each having an upset portion on each end
US5119662A (en) * 1984-04-16 1992-06-09 Sanwa Kokan Co., Ltd. Methods for cold drawing seamless metal tubes each having an upset portion on each end
FR2697764A1 (en) * 1992-11-09 1994-05-13 New Conimast International Fabrication of variable diameter pillar for use as lamp post - by reducing, over predetermined length, one of ends of pillar of first diameter to second smaller diameter to produce stepped post
EP0663248A1 (en) * 1994-01-12 1995-07-19 The Torrington Company Method of making a camshaft
US6134937A (en) * 1996-05-03 2000-10-24 True Temper Sports, Inc. Golf club and shaft therefor and method of making same
GB2529844A (en) * 2014-09-03 2016-03-09 Reynolds Technology Ltd Forming butted tubes
GB2529844B (en) * 2014-09-03 2017-03-08 Reynolds Tech Ltd Forming butted tubes
CN109877594A (en) * 2019-04-19 2019-06-14 东莞市方荣精机工业有限公司 A kind of rectangle drawbench

Also Published As

Publication number Publication date
FR2326993B1 (en) 1979-06-15

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Legal Events

Date Code Title Description
ST Notification of lapse