US3478565A - Forging machine - Google Patents

Forging machine Download PDF

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Publication number
US3478565A
US3478565A US668019A US3478565DA US3478565A US 3478565 A US3478565 A US 3478565A US 668019 A US668019 A US 668019A US 3478565D A US3478565D A US 3478565DA US 3478565 A US3478565 A US 3478565A
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United States
Prior art keywords
forging
saddles
saddle
workpiece
machine
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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
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US668019A
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English (en)
Inventor
Horst Schenk
Friedhelm Wurtz
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Maschinenfabrik Sack GmbH
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Maschinenfabrik Sack GmbH
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Publication of US3478565A publication Critical patent/US3478565A/en
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    • 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
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers

Definitions

  • a forging machine has at least three forging saddles which are arranged to surround a workpiece in use and, by moving inwards towards each other, reduce the cross sectional area of the workpiece, each saddle having a pressure face to bear against the workpiece, an end face and a guide which constrains the saddle to maintain its end face substantially in contact with the pressure face of a neighboring saddle as the saddles move inwards towards each other in use. In this way a fully enclosed throat is maintained throughout the deformation process.
  • each of the guides constraining the saddles to maintain their end faces substantially in contact with the pressure faces of neighbouring saddles, comprises an arm rigidly fixed to the respective saddle, from which it extends obliquely relatively to the direction of movement of the saddle, and pivoted on a fixed part of the machine.
  • each of the arms may be pivoted about a pin which is adjustable in position relative to the fixed part of the machine in a direction perpendicular to its axis.
  • the ratio between the sides and ends of the rectangle can be altered by adjusting the posi- "ice tions of two oppositely situated pivot pins, leaving the other two pivot pins where they are.
  • the shape of the cross-section of the bar produced will be unchanged.
  • a machine according to the invention is capable of forging not only bar of triangular, rectangular or polygonal cross-section, but also if desired round bar.
  • the pressure face of each saddle should have a flat portion and, adjacent to the end of the saddle, a part cylindrical portion.
  • the radius of the round bar produced is then equal to the radius of curvature of the cylindrical portions of the working faces of the saddles.
  • each ram having a piston and a cylinder, the cylinders being pivoted on a fixed part of the machine at their outer ends to allow the pistons to follow the movements of the saddles.
  • FIGURE 1 is a cross-section through the machine
  • FIGURE 2 is a view with parts in section taken on the line 11-11 in FIGURE 1;
  • FIGURE 3 is a cross-section corresponding to FIGURE 1; of the forging saddles and the workpiece of a modification of the' machine.
  • FIGURES 1 and 2 illustrate only those parts which are necessary for explaining the invention. Other parts, for example the means for advancing the workpiece, have been omitted for the sake of simplicity.
  • the machine pepresented in FIGURES 1 and 2 is for making rod material of rectangular cross-section. However, from the explanation given below it is obvious that by using other numbers of forging saddles other polygonal cross-sections can be made. However there must be at least three forging saddles.
  • the machine shown in FIGURES 1 and 2 has four forging saddles 1, 2, 3 and 4, positioned at to each other and enclosing a workpiece 5.
  • Each forging saddle rests not only with a pressure face in contact with the workpiece 5, but also with an end face in contact with a neighbourmg forging saddle.
  • FIGURE 1 there 1s contact between the pressure face 1:11 of the saddle 1 and the end face 2b of the saddle 2. The same applies to all the other saddles.
  • Each saddle is driven by a hydraulic piston in a cylinder together forming a ram.
  • the cylinders are shown at 6, 7, 8, 9, and are pivoted at 10, 11, 12, 13 on a fixed frame 14 of the machine.
  • each piston pushes its saddle towards the middle of the machine, and between them they squash the workpiece 5.
  • the movement of each saddle is guided by one of four arms 15, 16, 17, 18.
  • Each arm pivots about one of four pins 19, 20, 21, 22.
  • the axis of each pin runs at right angles to the plane of the drawing in FIGURE 1, and
  • each of the arms 15, 16, 17, 18 extends at an angle to the direction of thrust of the saddle during deformation of the workpiece. If, as shown, there are four saddles and the machine is producing bar of square cross-section, the angle between each arm and its saddle pressure surface is preferably 45 After the four pistons of the four cylinders 6, 7, 8 and 9 have all performed working strokes of the same length, the workpiece 5 has been squashed to a smaller but still square cross-section, as shown by a small hatched square 24 in FIGURE 1. During this squashing operation the axis of the square has become slightly displaced from its original position. Furthermore the final square crosssection is slightly rotated relative to the initial square cross-section. These changes are however not a disadvan tage in practice.
  • the pistons withdraw, and the workpiece 5 is advanced in the direction of the arrow P by an amount equal to the width of the saddles.
  • the forging process taking place here is usually hot forging.
  • each of the pivot pins 19, 20, 21, 22 of the saddle arms 15, 16, 17, 18 is adjustable in position by means of sliding blocks and adjustment screws, the direction of adjustment being at right angles to the length of the arm.
  • FIGURE 1 shows the sliding block for the pivot pin 20 of the arm 16 at 25, and the adjustment screws for this block at 26 and 27.
  • the rectangular cross-section of the forging can be made still longer and thinner by also adjusting the positions of the pivot pins 19 and 21, this time both in the sense opposite to the adjustment of the pins 20 and 22, for example if the pins 20 and 22 are shifted clockwise as seen in FIGURE 1, then the pins 19 and 21 are shifted anti-clockwise. It will be observed that the cross-sectional shape produced in the forging is unchanged if all the pivot pins are shifted in the same sense, for example all clockwise or all anti-clockwise.
  • FIGURE 3 shows a saddle shape suitable for forging a round bar.
  • the drives and saddle arms have been omitted, because they are as shown in FIGURES 1 and 2.
  • the saddles have pressure surfaces which are not fiat all the way.
  • Each pressure surface consists of a flat part 28 and a part 29 which has a cylindrical curvature. Nevertheless here again the pressure surface of each saddle, or at least the flat part of the pressure surface, rests in contact with the end surface of a neighbouring saddle.
  • the radius of the cylindrical surface 29 is equal to the radius of the finally forged round bar 30. It will be observed from FIGURE 3 that the four saddles cannot be entirely crowded together, as can the saddles in FIGURE 1 and 2, but can be brought together only far enough to forge a bar of round section of the same radius as the curves 29.
  • the four driving cylinders 6, 7, 8, 9 can be fed with hydraulic fluid by four separate pumps, each delivering the same precisely metered volume of fluid.
  • the hydraulic drive can be a conventional equal-action hydraulic drive.
  • a forging machine comprising a fixed frame having an axis along which a workpiece is disposable, at least three forging saddles, each of said forging saddles having an end face and a pressure face, said pressure faces defining a throat adapted to receive the workpiece therein, separate means for moving each of said saddles relatively to said frame inwards to constrict said throat, and means movably mounting said saddles on said frame and adapted to constrain said movement of said saddles so that said end face of each of said saddles is maintained substantially in contact with said pressure face of a neighboring one of said saddles during said inward movement, said means for mounting said saddles on said frame comprising a guiding arm integral with and projecting from each of said saddles at an oblique angle to the direction of said movement of said saddle and pivoting means connecting a portion of each of said arms remote from said saddle to said frame, said pivoting means having an axis about which said arms are pivotable, said pivot axis extending parallel to the axis of said forging machine frame.
  • each of said pivoting means includes a pivot pin and means for adjusting the position of said pivot pin relatively to said fixed frame in a direction perpendicular to the axis of said pivot pin.
  • a forging machine according to claim 1, wherein said pressure face of each of said saddles is formed with a flat portion and a cylindrical portion, said cylindrical portion being disposed adjacent said end faces.
  • said saddle moving means comprises an hydraulic ram for each of said saddles, one end of said ram being pivoted on said fixed frame, and the other end of said ram being connected to said saddle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
US668019A 1966-09-30 1967-09-15 Forging machine Expired - Lifetime US3478565A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM71124A DE1301790B (de) 1966-09-30 1966-09-30 Schmiedemaschine

Publications (1)

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US3478565A true US3478565A (en) 1969-11-18

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US668019A Expired - Lifetime US3478565A (en) 1966-09-30 1967-09-15 Forging machine

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US (1) US3478565A (enrdf_load_html_response)
BE (1) BE704015A (enrdf_load_html_response)
DE (1) DE1301790B (enrdf_load_html_response)
GB (1) GB1144845A (enrdf_load_html_response)
SE (1) SE352255B (enrdf_load_html_response)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656334A (en) * 1969-02-20 1972-04-18 Sack Gmbh Maschf Forging machine
US3657916A (en) * 1969-02-20 1972-04-25 Sack Gmbh Maschf Forging machine
US3695087A (en) * 1970-08-26 1972-10-03 Arthur H Tuberman Method and apparatus for pointing tubes
US3837209A (en) * 1972-12-04 1974-09-24 R Siegfried Forging machine
US3841125A (en) * 1972-02-18 1974-10-15 Sack Gmbh Maschf Control device with hydraulic synchronising control for forging machines
US4420962A (en) * 1981-09-02 1983-12-20 Walker Forge, Inc. Method of cold coining a toothed segment for an endless track wheel and two-piece die therefor and article formed thereby
EP0228030A2 (de) 1986-01-02 1987-07-08 SMS Hasenclever GmbH Schmiedemaschine
EP0297312A1 (en) * 1987-07-03 1989-01-04 DANIELI & C. OFFICINE MECCANICHE S.p.A. Multipurpose swaging machine
US5655402A (en) * 1993-12-16 1997-08-12 Schubert; Peter Forging machine
RU2240199C1 (ru) * 2003-04-16 2004-11-20 Открытое Акционерное Общество "Тяжпрессмаш" Инструмент для радиальной ковки
RU2242322C1 (ru) * 2003-04-16 2004-12-20 Открытое Акционерное Общество "Тяжпрессмаш" Четырехбойковое ковочное устройство
RU2242321C1 (ru) * 2003-04-16 2004-12-20 Открытое Акционерное Общество "Тяжпрессмаш" Четырехбойковое ковочное устройство
WO2005039802A1 (fr) * 2003-10-23 2005-05-06 Joint Stock Company 'chepetskiy Mechanical Plant'(Jsc Cvp) Dispositif de forgeage a quatre frappes de marteau
RU2268104C2 (ru) * 2003-10-27 2006-01-20 Открытое Акционерное Общество "Тяжпрессмаш" Радиально-обжимная машина
RU2282517C2 (ru) * 2004-05-31 2006-08-27 Открытое акционерное общество "Чепецкий механический завод" (ОАО ЧМЗ) Способ радиальной ковки заготовок и четырехбойковое ковочное устройство для его осуществления
RU2283718C2 (ru) * 2004-12-10 2006-09-20 Открытое Акционерное Общество "Тяжпрессмаш" Четырехбойковое ковочное устройство
RU2283716C2 (ru) * 2004-12-10 2006-09-20 Открытое Акционерное Общество "Тяжпрессмаш" Способ получения калиброванных поковок в четырехбойковом ковочном устройстве
US20090308129A1 (en) * 2006-05-26 2009-12-17 Young Thomas M Shutter-type crimper
RU2417856C1 (ru) * 2009-09-28 2011-05-10 Открытое Акционерное Общество "Тяжпрессмаш" Способ изотермической ковки заготовок в четырехбойковом ковочном устройстве

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3205413A1 (de) * 1982-02-16 1983-08-25 Weiszhaar, Johann, 7063 Welzheim Vorrichtung zum aufpressen von huelsen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1313380A (en) * 1919-08-19 Lewis
DE449558C (de) * 1926-05-07 1927-09-15 Johannes Ingrisch Dipl Ing Presse zur Verdichtung oder Querschnittsaenderung von Koerpern aus Metall oder anderen Stoffen
DE1084111B (de) * 1952-04-10 1960-06-23 Kocks Gmbh Friedrich Vorrichtung zum Streckschmieden

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1549527A (en) * 1923-03-06 1925-08-11 Fielding John Tube-forging apparatus
US2153839A (en) * 1936-02-11 1939-04-11 Fritz Singer Metalworking
GB567355A (en) * 1943-09-14 1945-02-09 Wellman Seaver Rolling Mill Co Improvements in or relating to tube swaging machines
FR1392175A (fr) * 1964-04-17 1965-03-12 Vsessoiouzny Ni I P Konstroukt Outil pour le travail des métaux par pression

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1313380A (en) * 1919-08-19 Lewis
DE449558C (de) * 1926-05-07 1927-09-15 Johannes Ingrisch Dipl Ing Presse zur Verdichtung oder Querschnittsaenderung von Koerpern aus Metall oder anderen Stoffen
DE1084111B (de) * 1952-04-10 1960-06-23 Kocks Gmbh Friedrich Vorrichtung zum Streckschmieden

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656334A (en) * 1969-02-20 1972-04-18 Sack Gmbh Maschf Forging machine
US3657916A (en) * 1969-02-20 1972-04-25 Sack Gmbh Maschf Forging machine
US3695087A (en) * 1970-08-26 1972-10-03 Arthur H Tuberman Method and apparatus for pointing tubes
US3841125A (en) * 1972-02-18 1974-10-15 Sack Gmbh Maschf Control device with hydraulic synchronising control for forging machines
US3837209A (en) * 1972-12-04 1974-09-24 R Siegfried Forging machine
US4420962A (en) * 1981-09-02 1983-12-20 Walker Forge, Inc. Method of cold coining a toothed segment for an endless track wheel and two-piece die therefor and article formed thereby
EP0228030A2 (de) 1986-01-02 1987-07-08 SMS Hasenclever GmbH Schmiedemaschine
US4796456A (en) * 1986-01-02 1989-01-10 Sms Hasenclever Maschinenfabrik Gmbh Forging machine
EP0297312A1 (en) * 1987-07-03 1989-01-04 DANIELI & C. OFFICINE MECCANICHE S.p.A. Multipurpose swaging machine
US4879893A (en) * 1987-07-03 1989-11-14 Danieli & C. Officine Mecchaniche Spa Multipurpose swaging machine
US5655402A (en) * 1993-12-16 1997-08-12 Schubert; Peter Forging machine
RU2240199C1 (ru) * 2003-04-16 2004-11-20 Открытое Акционерное Общество "Тяжпрессмаш" Инструмент для радиальной ковки
RU2242322C1 (ru) * 2003-04-16 2004-12-20 Открытое Акционерное Общество "Тяжпрессмаш" Четырехбойковое ковочное устройство
RU2242321C1 (ru) * 2003-04-16 2004-12-20 Открытое Акционерное Общество "Тяжпрессмаш" Четырехбойковое ковочное устройство
WO2005039802A1 (fr) * 2003-10-23 2005-05-06 Joint Stock Company 'chepetskiy Mechanical Plant'(Jsc Cvp) Dispositif de forgeage a quatre frappes de marteau
RU2257278C1 (ru) * 2003-10-23 2005-07-27 Открытое акционерное общество "Чепецкий механический завод" (ОАО ЧМЗ) Четырехбойковое ковочное устройство
RU2268104C2 (ru) * 2003-10-27 2006-01-20 Открытое Акционерное Общество "Тяжпрессмаш" Радиально-обжимная машина
RU2282517C2 (ru) * 2004-05-31 2006-08-27 Открытое акционерное общество "Чепецкий механический завод" (ОАО ЧМЗ) Способ радиальной ковки заготовок и четырехбойковое ковочное устройство для его осуществления
RU2283718C2 (ru) * 2004-12-10 2006-09-20 Открытое Акционерное Общество "Тяжпрессмаш" Четырехбойковое ковочное устройство
RU2283716C2 (ru) * 2004-12-10 2006-09-20 Открытое Акционерное Общество "Тяжпрессмаш" Способ получения калиброванных поковок в четырехбойковом ковочном устройстве
US20090308129A1 (en) * 2006-05-26 2009-12-17 Young Thomas M Shutter-type crimper
US8408038B2 (en) 2006-05-26 2013-04-02 Thomas M. Young Shutter-type crimper
RU2417856C1 (ru) * 2009-09-28 2011-05-10 Открытое Акционерное Общество "Тяжпрессмаш" Способ изотермической ковки заготовок в четырехбойковом ковочном устройстве

Also Published As

Publication number Publication date
GB1144845A (en) 1969-03-12
BE704015A (enrdf_load_html_response) 1968-02-01
DE1301790B (de) 1969-08-28
SE352255B (enrdf_load_html_response) 1972-12-27

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