EP0781612A1 - Electrode pour appareil de refoulement électrique - Google Patents

Electrode pour appareil de refoulement électrique Download PDF

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Publication number
EP0781612A1
EP0781612A1 EP95120709A EP95120709A EP0781612A1 EP 0781612 A1 EP0781612 A1 EP 0781612A1 EP 95120709 A EP95120709 A EP 95120709A EP 95120709 A EP95120709 A EP 95120709A EP 0781612 A1 EP0781612 A1 EP 0781612A1
Authority
EP
European Patent Office
Prior art keywords
electrode
bore
conductive plate
engagement bore
workpiece
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Withdrawn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
EP95120709A
Other languages
German (de)
English (en)
Inventor
Masahiro c/o Fuji Oozx Inc. Takase
Takasi c/o Fuji Oozx Inc. Ouchiyama
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.)
Fuji Oozx Inc
Original Assignee
Fuji Oozx Inc
Fuji Valve Co Ltd
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
Priority to JP6164978A priority Critical patent/JPH0824984A/ja
Application filed by Fuji Oozx Inc, Fuji Valve Co Ltd filed Critical Fuji Oozx Inc
Priority to EP95120709A priority patent/EP0781612A1/fr
Publication of EP0781612A1 publication Critical patent/EP0781612A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/06—Swaging presses; Upsetting presses
    • B21J9/08—Swaging presses; Upsetting presses equipped with devices for heating the work-piece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/20—Making machine elements valve parts
    • B21K1/22—Making machine elements valve parts poppet valves, e.g. for internal-combustion engines

Definitions

  • the present invention relates to a long-life electrode used in an electric gathering apparatus.
  • Material is molded to a rough body which is similar to a product and is subjected to mechanical processing to manufacture a poppet valve.
  • a rough body As means for molding the rough body, for example, as shown in Fig. 2, an elongate material 1 is molded to a primary rough body 2 which has a spherical end portion by an electric gathering apparatus "A”, and is subjected to hot forging by a pressing machine to form a secondary rough body 3.
  • the electric gathering apparatus “A” comprises an upper electrode 4, a lower electrode 5, a pusher 6 which goes up and down, for example, by hydraulic means, and a power source 7 for supplying current to the electrodes 4 and 5.
  • Fig. 3 illustrates a rotary electrode 4.
  • the bottom-having cylindrical rotary electrode 4 which has different diameters is rotatably supported releasably by a pair of suspension members 8 to a stationary member 9 of the electric gathering apparatus "A" not to move vertically and laterally as shown in Fig. 2.
  • a conductive plate 11 is cylindrical, and has four vertical engagement grooves 12 on the outer circumferential surface and a hexagonal engagement bore 13 around an axis.
  • the conductive plate 11 is engaged in the rotary electrode 4 by fitting the engagement projections 10 in the engagement grooves 12 such that the upper surfaces are in the same plane.
  • a hexagonal engagement plate 16 is fixed to the lower end of a drive shaft 15 of a drive member 14, such that the engagement plate 16 is detachable from the engagement bore 13.
  • the drive shaft 15 is rotated intermittently by a motor (not shown), so that the rotary electrode 4 is simultaneously rotated.
  • the conductive plate 11 of the rotary electrode 4 is made of copper, and the upper inner edge of the engagement bore 13 is isolated from air, thereby involving poor radiation of heat. Further, when a workpiece is processed, it is subjected to high temperature, and gathering is repeated at a number of times, so that the edge portions are gradually deformed inwards to generate a burr 17. Therefore, for example, to replace the rotary electrode 4, it is difficult to break down each member, which often requires repair and processing.
  • an electrode in an electric gathering apparatus for supplying current to a workpiece which is held between upper and lower electrodes to press the workpiece towards the upper electrode to expand an upper end of the workpiece
  • the upper electrode comprising a rotary electrode on which the upper end of the workpiece is engaged, and a conductive plate which is engaged in a bottom-having bore on the rotary electrode releasably and unrotatably, the conductive plate having a polygonal engagement bore in which a drive shaft is fitted around its axis, an annular cut-away portion which is larger than the engagement bore in diameter being formed at an upper edge of the engagement bore.
  • the cut-away portion having larger diameter is continuously formed with the engagement bore at the upper edge of the engagement bore of the conductive plate, so that a burr which is generated inwards by deformation of the upper edge of the engagement bore owing to rise in temperature during gathering does not project to outlet and inlet pathes of the drive shaft.
  • a burr which is generated inwards by deformation of the upper edge of the engagement bore owing to rise in temperature during gathering does not project to outlet and inlet pathes of the drive shaft.
  • Fig. 1 illustrates a conductive plate 18 used in an electrode of the present invention, and the other members allotted by the same numerals are similar to the foregoing description. The detailed description thereof is omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Forging (AREA)
  • Constitution Of High-Frequency Heating (AREA)
EP95120709A 1994-07-18 1995-12-29 Electrode pour appareil de refoulement électrique Withdrawn EP0781612A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP6164978A JPH0824984A (ja) 1994-07-18 1994-07-18 電気鍛縮機の電極
EP95120709A EP0781612A1 (fr) 1994-07-18 1995-12-29 Electrode pour appareil de refoulement électrique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6164978A JPH0824984A (ja) 1994-07-18 1994-07-18 電気鍛縮機の電極
EP95120709A EP0781612A1 (fr) 1994-07-18 1995-12-29 Electrode pour appareil de refoulement électrique

Publications (1)

Publication Number Publication Date
EP0781612A1 true EP0781612A1 (fr) 1997-07-02

Family

ID=26139004

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95120709A Withdrawn EP0781612A1 (fr) 1994-07-18 1995-12-29 Electrode pour appareil de refoulement électrique

Country Status (2)

Country Link
EP (1) EP0781612A1 (fr)
JP (1) JPH0824984A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1127953A2 (fr) * 2000-02-23 2001-08-29 Fuji Oozx Inc. Procédé de fabrication d'une soupape à champignon en alliage de titane
EP2272993A1 (fr) * 2009-06-05 2011-01-12 Böhler Schmiedetechnik GmbH & Co KG Procédé de fabrication d'une pièce forgée à partir d'un alliage gamma à base titane-aluminium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4943778B2 (ja) * 2006-08-28 2012-05-30 本田技研工業株式会社 アプセット成形装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242695A (en) * 1963-12-23 1966-03-29 Ford Motor Co Slip spline lubrication system
GB2024310A (en) * 1978-07-03 1980-01-09 Ingersoll Rand Co Universal joint
JPS60133945A (ja) * 1983-11-09 1985-07-17 Mitsubishi Heavy Ind Ltd 電気アプセツタ
DE3538950A1 (de) * 1984-11-23 1986-06-05 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Spinnpumpe, insbesondere zahnradpumpe
US5153547A (en) * 1990-06-20 1992-10-06 Toko Kabushiki Kaisha High frequency coil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242695A (en) * 1963-12-23 1966-03-29 Ford Motor Co Slip spline lubrication system
GB2024310A (en) * 1978-07-03 1980-01-09 Ingersoll Rand Co Universal joint
JPS60133945A (ja) * 1983-11-09 1985-07-17 Mitsubishi Heavy Ind Ltd 電気アプセツタ
DE3538950A1 (de) * 1984-11-23 1986-06-05 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Spinnpumpe, insbesondere zahnradpumpe
US5153547A (en) * 1990-06-20 1992-10-06 Toko Kabushiki Kaisha High frequency coil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 297 (M - 432) 25 November 1985 (1985-11-25) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1127953A2 (fr) * 2000-02-23 2001-08-29 Fuji Oozx Inc. Procédé de fabrication d'une soupape à champignon en alliage de titane
EP1127953A3 (fr) * 2000-02-23 2002-05-29 Fuji Oozx Inc. Procédé de fabrication d'une soupape à champignon en alliage de titane
EP2272993A1 (fr) * 2009-06-05 2011-01-12 Böhler Schmiedetechnik GmbH & Co KG Procédé de fabrication d'une pièce forgée à partir d'un alliage gamma à base titane-aluminium
US8828160B2 (en) 2009-06-05 2014-09-09 Boehler Schmiedetechnik Gmbh & Co. Kg. Method for producing a forging from a gamma titanium aluminum-based alloy

Also Published As

Publication number Publication date
JPH0824984A (ja) 1996-01-30

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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