US3427856A - High speed returning impact forming machine - Google Patents

High speed returning impact forming machine Download PDF

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Publication number
US3427856A
US3427856A US621940A US3427856DA US3427856A US 3427856 A US3427856 A US 3427856A US 621940 A US621940 A US 621940A US 3427856D A US3427856D A US 3427856DA US 3427856 A US3427856 A US 3427856A
Authority
US
United States
Prior art keywords
ram
movable frame
impact forming
high speed
forming machine
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 - Lifetime
Application number
US621940A
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English (en)
Inventor
Akira Asari
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Application granted granted Critical
Publication of US3427856A publication Critical patent/US3427856A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/20—Drives for hammers; Transmission means therefor
    • B21J7/22—Drives for hammers; Transmission means therefor for power hammers
    • B21J7/24—Drives for hammers; Transmission means therefor for power hammers operated by steam, air, or other gaseous pressure

Definitions

  • the valve for communicating between the gas pressure chamber and the upper portion of the cylinder for receiving the plunger integral to the ram is open or is not closed completely immediately after the ram reaches its initial uppermost position so as to lower the supporting member
  • the high pressure of the chamber flown back through the conduits and the valve effects to actuate upon the upper surface of the plunger so that it initiates to descend the ram accidentally causing its dangerous operation.
  • the supporting member of the ram reciprocates up and down by means of a mechanical force such as the crank, it moves downwards or in such a direction that it separates from the ram immediately after it reaches its initial uppermost positions so that it removes the supporting operation of the ram. Accordingly, the valve must be closed immediately after the supporting member reaches its uppermost position.
  • the ram operated by the high pressure in the chamber is supported or held by the movable frame supported by means of the cushion, and in order to return the ram to its initial uppermost position the jacking mechanism secured to the fixed frame is utilized so as to enable lateral movement up and down relative to the movable frame or the stopper means are provided.
  • This stopper means is, for example, comprised of a piston and cylinder in combination. It is adapted to drive the piston by means of hydraulic pressure.
  • the stopper means allow its reaction of the movable frame in its impact forming operation to operate, however in the returning stroke of the ram after its impact forming operation it does not permit its returning movement of the movable frame together with the upward movement of the ram.
  • Still another object of this invention is to provide a high speed returning impact forming machine in which drawback in the cylinder is removed.
  • This invention provides a high speed returning impact forming machine employing gas pressure means in which machine a mechanism for converting the rotary motion to linear reciprocating movement is provided, by which mechanism the linear motion converted from the rotating movement is adapted to correspond to the driving direction of the ram, and the reciprocating motion thereof is transmitted to the returning member or the ram supporting member, thereby the ram is returned to its initial uppermost position through the member to which the extended portion upwards integrally from the top of the ram or a stem is hung.
  • the impact forming machine in accordance with this invention is provided such that the ram is returned to its initial uppermost position by means of linear motion of the aforementioned mechanism such as a crank mechanism in high velocity after the impact forming operation has done, accordingly the impact forming cycle is shortened in great amount.
  • the cycle is made continuous operation and the efficiency of the operation is extremely improved in impact formation of the machine in accordance with this invention.
  • valve 7 is open or is not closed completely immediately after the ram 2 reached its initial uppermost position so as to lower the supporting member 10, the
  • stopper means comprise hydraulic pressure cylinder disposed fixedly downwards to the upper portions of the fixed frame, stopper pistons being inserted to said cylinders respectively, and rods adapted to be integral to said piston, said rods being projected downwards and disposed opposite to the upper surface of said movable frame, thereby enabling to stop said movable frame moving upwards.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Forging (AREA)
US621940A 1966-03-14 1967-03-09 High speed returning impact forming machine Expired - Lifetime US3427856A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1604866 1966-03-14

Publications (1)

Publication Number Publication Date
US3427856A true US3427856A (en) 1969-02-18

Family

ID=11905676

Family Applications (1)

Application Number Title Priority Date Filing Date
US621940A Expired - Lifetime US3427856A (en) 1966-03-14 1967-03-09 High speed returning impact forming machine

Country Status (5)

Country Link
US (1) US3427856A (de)
AT (1) AT269601B (de)
DE (1) DE1627430A1 (de)
FR (1) FR1514617A (de)
GB (1) GB1174295A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683666A (en) * 1969-06-28 1972-08-15 Harald Hassel Counter-blow hammer with a hammer drive
US3867833A (en) * 1973-05-04 1975-02-25 Anatoly Sergeevich Morgolenko Metal-working machine
US3898834A (en) * 1969-12-18 1975-08-12 Kurt H Kramer High energy forging press
US4341137A (en) * 1979-10-02 1982-07-27 The Warner & Swasey Company Material forming apparatus
US4587831A (en) * 1985-05-20 1986-05-13 Yen Wen Hsiung Press machine
US4890476A (en) * 1986-04-11 1990-01-02 Amada Company, Limited Precision plate bending machine having a play removing device
US20090139812A1 (en) * 2005-04-01 2009-06-04 Morphic Technologies Aktiebolag (Publ) Shock absorber for movable tools
CN102000941A (zh) * 2010-10-26 2011-04-06 湖南汉龙水电设备有限公司 空气锤曲轴曲柄断裂修复方法
US20120255337A1 (en) * 2011-04-07 2012-10-11 Honda Motor Co., Ltd. Press working apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500767A1 (fr) * 1981-02-27 1982-09-03 Voron Proizv Dispositif de distribution du fluide moteur d'un marteau rapide

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103136A (en) * 1960-11-28 1963-09-10 Warner Swasey Co High energy impact machine
US3105414A (en) * 1961-12-26 1963-10-01 Gen Dynamics Corp High energy impactor apparatus
US3158048A (en) * 1960-10-25 1964-11-24 Warner Swasey Co Impact machine
US3194049A (en) * 1961-10-19 1965-07-13 Eumuco Ag Fur Maschb Top-pressure forging hammer
US3352143A (en) * 1965-04-02 1967-11-14 Leo C Bollar Impact apparatus
US3354693A (en) * 1963-07-24 1967-11-28 Kobe Steel Ltd High energy rate forming machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158048A (en) * 1960-10-25 1964-11-24 Warner Swasey Co Impact machine
US3103136A (en) * 1960-11-28 1963-09-10 Warner Swasey Co High energy impact machine
US3194049A (en) * 1961-10-19 1965-07-13 Eumuco Ag Fur Maschb Top-pressure forging hammer
US3105414A (en) * 1961-12-26 1963-10-01 Gen Dynamics Corp High energy impactor apparatus
US3354693A (en) * 1963-07-24 1967-11-28 Kobe Steel Ltd High energy rate forming machine
US3352143A (en) * 1965-04-02 1967-11-14 Leo C Bollar Impact apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683666A (en) * 1969-06-28 1972-08-15 Harald Hassel Counter-blow hammer with a hammer drive
US3898834A (en) * 1969-12-18 1975-08-12 Kurt H Kramer High energy forging press
US3867833A (en) * 1973-05-04 1975-02-25 Anatoly Sergeevich Morgolenko Metal-working machine
US4341137A (en) * 1979-10-02 1982-07-27 The Warner & Swasey Company Material forming apparatus
US4587831A (en) * 1985-05-20 1986-05-13 Yen Wen Hsiung Press machine
US4890476A (en) * 1986-04-11 1990-01-02 Amada Company, Limited Precision plate bending machine having a play removing device
US20090139812A1 (en) * 2005-04-01 2009-06-04 Morphic Technologies Aktiebolag (Publ) Shock absorber for movable tools
CN102000941A (zh) * 2010-10-26 2011-04-06 湖南汉龙水电设备有限公司 空气锤曲轴曲柄断裂修复方法
US20120255337A1 (en) * 2011-04-07 2012-10-11 Honda Motor Co., Ltd. Press working apparatus
US9174261B2 (en) * 2011-04-07 2015-11-03 Honda Motor Co., Ltd. Press working apparatus

Also Published As

Publication number Publication date
FR1514617A (fr) 1968-02-23
AT269601B (de) 1969-03-25
DE1627430A1 (de) 1970-11-05
GB1174295A (en) 1969-12-17

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