US3426574A - Percussion press - Google Patents

Percussion press Download PDF

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Publication number
US3426574A
US3426574A US592360A US3426574DA US3426574A US 3426574 A US3426574 A US 3426574A US 592360 A US592360 A US 592360A US 3426574D A US3426574D A US 3426574DA US 3426574 A US3426574 A US 3426574A
Authority
US
United States
Prior art keywords
sleeve
flywheel
frame
screw
press
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
US592360A
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English (en)
Inventor
Jozef Voronak
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.)
CHEPOS Z CHEMICKEHO A POTRAVIN
CHEPOS ZAVODY CHEMICKEHO A POTRAVINARSKEHO STROJIRENSTVI
Original Assignee
CHEPOS Z CHEMICKEHO A POTRAVIN
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 CHEPOS Z CHEMICKEHO A POTRAVIN filed Critical CHEPOS Z CHEMICKEHO A POTRAVIN
Application granted granted Critical
Publication of US3426574A publication Critical patent/US3426574A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
    • B30B1/188—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means driven by a continuously rotatable flywheel with a coupling arranged between the flywheel and the screw
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
    • B30B1/22—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means driven through friction disc means

Definitions

  • This invention relates to screw presses and particularly to a screw press having a sleeve mounted for vertical rotation in the press frame, a flywheel axially movable on the upper end of screw and superposed on a drive wheel.
  • the connection between the flywheel and said drive wheel being interruptable by means of an air cushion. Presses of this type are commonly referred to as percussion presses, and are normally employed for cold forming metallic workpieces.
  • An object of the invention is the provision of a percussion press of the type specified with a more efficient drive.
  • Another object is the provision of a percussion press with a drive wheel continually rotating even when the press ram is inoperative, while the flywheel, eventually the sleeve are set into rotations exclusively in order to accomplish the working stroke.
  • a further object is the provision of a percussion press with an increased efficiency of the sleeve brake.
  • a still another object is the provision of a percussion press in which an improved control of the amount of energy stored in the flywheel as well as its stepless regulation is made possible.
  • the press of the invention has a sleeve mounted in the press frame for rotation about its vertical axis and for being displaced in the direction of said vertical axis.
  • the screw of the press which is fastened to the press ram for joint movement and away from the press bed, has a threaded portion threadedly received in the sleeve.
  • a flywheel is secured against rotation relative to said screw and superposed on a drive member provided on the sleeve.
  • a friction clutch is provided between the drive member and the sleeve for transmitting the rotations of said drive member to said sleeve.
  • a pressure-medium actuated piston is provided in the frame for both lifting the sleeve in the axial direction and engaging the friction clutch coupling the sleeve with the drive member.
  • the flywheel is axially movable on the screw toward and away from a position of weight transmitting frictional engagement with an upwardly directed face of the drive member.
  • the flywheel may be lifted from this position by a pneumatic device which includes means for admitting a gas under pressure to a normally sealed chamber axially defined between the face of the drive member and the flywheel.
  • the drive member may be rotated about the aforementioned axis by a motor.
  • the top portion of the screw 3 is profiled in order to receive the flywheel 5 having for this purpose an apperture of identical section.
  • the drive wheel 1 rotatably mounted on the sleeve 2.
  • the drive wheel 1 is provided with an annular disc 9.
  • On the periphery of the sleeve 2 are formed teeth carrying the disc 7 movable thereon in the axial direction.
  • the disc 7 is provided with a friction lining 8 and 10.
  • the disc 7 is subject to pressure exerted by springs 15 leaning against the disc 18 fixedly connected with the sleeve 2 The springs 15 are forcing this disc 7 on to the annular disc 9.
  • Below said disc 7 is a ring-shaped piston 11 secured against radial movement by the pin 20.
  • the flywheel 5 is movable in the axial direction on the profiled end of the screw 3, and on its bottom portion it is provided with a friction lining 12, by means of which it is superposed on the contact surface of the drive wheel 1.
  • the friction linin 12 is of a trough-like shape, thus forming between the contact surface of the drive wheel 1 and the flywheel 5 an annular pressure chamber provided with inlet orifices for compressed air.
  • On the peripheral portion of the bottom side of the flywheel 5 is another annular friction lining 13, under which is situated a ring-shaped piston 14 moving in a cylinder supported on the frame 17.
  • the piston 14 is secured against radial movement by the pin 19.
  • the piston 14 is also pressuremedium actuated, such as with compressed air.
  • the direction of the compressed air admission into the individual pressure spaces of the press is illustrated by arrows in the drawing.
  • the drive wheel 1 is driven by V-belts from a motor not illustrated. Before the motor is started, the ram 4 is in its starting position. Then the press is connected to the compressed-air source. Thereby compressed air is admitted under the ring-shaped pistons 11 and 14. The piston 14 is thus pressed on to the friction lining 13 and starts lifting the flywheel 5. Thus the flywheel 5 is braked and separated from the drive wheel 1. Also the ringshaped piston 11 is pressed on to the friction lining 10 of the disc 7 and lifts the same on the toothing of the sleeve 2. In this way both the sleeve 2 is braked against being turned and the friction connection between the drive wheel 1 and sleeve 2, constituted by disc 7, friction lining 8, and annular disc 9, is interrupted.
  • the piston 11 After having pressed the disc 7 on to the disc 18, the piston 11 continues its operative movement, lifts the disc 18 and simultaneously also the sleeve 2 to which the disc 18 is fixedly connected, together with all other parts connects, i.e. the screw 3 and drive wheel 1.
  • the springs 15 force the disc 7 against the ring-shaped piston 11, thus braking the sleeve 2 against being turned.
  • the sleeve 2 is lifted until its bottom flange 2a has contacted by its friction lining 16 the respective thrust portion of the frame 17.
  • the braking moment is a function of the weight of the parts lifted.
  • the braking effect is intensified on two friction surfaces and is proportional to the pressure of air below the ring-shaped piston 11.
  • the motor is started after the flywheel and sleeve 2 have been uncoupled from the drive wheel 1, and braked. Thereby the drive wheel 1 is started to rotate as long as the press is in service.
  • the ram 4 is returned into its starting top position by admitting compressed air under the ring-shaped piston 14, lifting and braking-up the flywheel 5.
  • the sleeve 2 is then unbraked, and by axial movement of the disc 7 forced off by springs 1, connected to the rotating drive wheel 1.
  • the rotating sleeve 2 starts the lifting ram 4.
  • the sleeve 2 is braked again. Thereby the starting position of the ram 4 is restored and the operating cycle can be repeated.
  • the stillstand of a percussion press of the invention is attained by stopping the motion of both the sleeve and the screw, not by simultaneous rotating of the sleeve and screw as common, which is unfavourable for the bearing, these being subject to excessive wear in the period between two following working strokes.
  • the ram-stroke energ In presses, in which the movement of the ram is interrupted by a simultaneous turning of the sleeve and the flywheel and screw, the ram-stroke energ cannot be steplessly regulated because the flywheel continually rotates with its maximum revolutions, which are decisive for its constant energy.
  • the energy of stroke can only step- Wisely be regulated in these presses, by loading and unloading of weights on to and off the flywheel.
  • (0) sleeve means having an axis extending in said direction, mounted in said frame for rotation about said axis, and movable in the frame in the axial direction;
  • said stop means including a flange formed at the end portion of said sleeve means.
  • said coupling means being a friction clutch.
  • said coupling means comprising a friction disc mounted on said sleeve means, secured against rotation relative to said sleeve means, and axially displaceable thereon, contacting in the engaged position at least a portion of said drive member.
  • said means for axial displacing of said sleeve means and for operating said coupling means comprising at least one pressure- 3,426,574 5 6 medium actuated piston supported in the frame, and FOREIGN AT thrust means connected with the sleeve means.
  • 987 663 3/1965 Great Britain References Cited UNITED STATES PATENTS 5 G. P. CROSBY, Assistant Examiner. 1,076,931 10/1913 Zeh 72454 1,498,208 6/ 1924 Schull 72454 US. Cl. X.R. 1,781,038 11/1930 Thomson 72-445 100289 1,913,663 6/1933 Ferris 72-454 3,376,728 4/1968 Nemessanyi 72-454 10 CHARLES W. LANHAM, Primary Examiner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)
US592360A 1965-11-16 1966-11-07 Percussion press Expired - Lifetime US3426574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS682865 1965-11-16

Publications (1)

Publication Number Publication Date
US3426574A true US3426574A (en) 1969-02-11

Family

ID=5416202

Family Applications (1)

Application Number Title Priority Date Filing Date
US592360A Expired - Lifetime US3426574A (en) 1965-11-16 1966-11-07 Percussion press

Country Status (5)

Country Link
US (1) US3426574A (de)
AT (1) AT262770B (de)
DE (1) DE1577222C3 (de)
FR (1) FR1514165A (de)
GB (1) GB1133530A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654799A (en) * 1969-03-01 1972-04-11 Becorit Grubenausbau Gmbh Press assembly
US3687070A (en) * 1969-03-01 1972-08-29 Becorit Grubenanskan Gmbh Press assembly
US4207763A (en) * 1978-01-12 1980-06-17 G. Siempelkamp Gmbh & Co. Screw press
US4563889A (en) * 1983-03-17 1986-01-14 Sms Hasenclever Maschinenfabrik Gmbh Screw press
US5669296A (en) * 1995-12-04 1997-09-23 Newton; Alan R. High ratio screw actuated press
RU2193971C2 (ru) * 2001-02-06 2002-12-10 Московский государственный индустриальный университет Винтовой пресс
RU2193970C2 (ru) * 2001-02-06 2002-12-10 Московский государственный индустриальный университет Винтовой пресс
CN103357807A (zh) * 2012-03-27 2013-10-23 上海运良锻压机床有限公司 摩擦螺旋压力机
CN112091144A (zh) * 2020-09-26 2020-12-18 青岛宏达锻压机械有限公司 气动增压补偿式防止过载闷车热模锻压力机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2110044C3 (de) * 1971-03-03 1979-08-23 Novopress Gmbh Pressen Und Presswerkzeuge & Co Kg, 4000 Duesseldorf Spindelpresse
DE2150726C3 (de) * 1971-10-12 1979-10-11 Novopress Gmbh Pressen Und Presswerkzeuge & Co Kg, 4000 Duesseldorf Spindelpresse
RU2672435C1 (ru) * 2017-12-11 2018-11-14 Акционерное общество "Научно-производственный комплекс "ЭЛАРА" имени Г.А. Ильенко" (АО "ЭЛАРА") Способ соединения деталей и устройство для его осуществления
CN110744003B (zh) * 2019-10-31 2021-06-18 肖亚凡 一种用于洛阳铲锻造的中部锤击装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1076931A (en) * 1912-05-29 1913-10-28 Edmund W Zeh Power-press.
US1498208A (en) * 1920-12-11 1924-06-17 Schull Leopold Screw press
US1781038A (en) * 1927-12-21 1930-11-11 Thomson Robert Power press
US1913663A (en) * 1930-12-15 1933-06-13 Oilgear Co Percussion press
GB987663A (en) * 1963-02-18 1965-03-31 Hasenclever Ag Maschf Fly press
US3376728A (en) * 1965-04-05 1968-04-09 Chepos Zd Y Chemickcho A Potra Percussion press

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1076931A (en) * 1912-05-29 1913-10-28 Edmund W Zeh Power-press.
US1498208A (en) * 1920-12-11 1924-06-17 Schull Leopold Screw press
US1781038A (en) * 1927-12-21 1930-11-11 Thomson Robert Power press
US1913663A (en) * 1930-12-15 1933-06-13 Oilgear Co Percussion press
GB987663A (en) * 1963-02-18 1965-03-31 Hasenclever Ag Maschf Fly press
US3376728A (en) * 1965-04-05 1968-04-09 Chepos Zd Y Chemickcho A Potra Percussion press

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654799A (en) * 1969-03-01 1972-04-11 Becorit Grubenausbau Gmbh Press assembly
US3687070A (en) * 1969-03-01 1972-08-29 Becorit Grubenanskan Gmbh Press assembly
US4207763A (en) * 1978-01-12 1980-06-17 G. Siempelkamp Gmbh & Co. Screw press
US4563889A (en) * 1983-03-17 1986-01-14 Sms Hasenclever Maschinenfabrik Gmbh Screw press
US5669296A (en) * 1995-12-04 1997-09-23 Newton; Alan R. High ratio screw actuated press
RU2193971C2 (ru) * 2001-02-06 2002-12-10 Московский государственный индустриальный университет Винтовой пресс
RU2193970C2 (ru) * 2001-02-06 2002-12-10 Московский государственный индустриальный университет Винтовой пресс
CN103357807A (zh) * 2012-03-27 2013-10-23 上海运良锻压机床有限公司 摩擦螺旋压力机
CN103357807B (zh) * 2012-03-27 2015-05-06 上海运良锻压机床有限公司 摩擦螺旋压力机
CN112091144A (zh) * 2020-09-26 2020-12-18 青岛宏达锻压机械有限公司 气动增压补偿式防止过载闷车热模锻压力机

Also Published As

Publication number Publication date
AT262770B (de) 1968-06-25
FR1514165A (fr) 1968-02-23
GB1133530A (en) 1968-11-13
DE1577222C3 (de) 1974-11-21
DE1577222A1 (de) 1970-04-09
DE1577222B2 (de) 1974-04-25

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