EP0163769A2 - Procédé et machine de fabrication d'anneaux métalliques avec une surface formée spécialement à partir d'une ébauche annulaire à section transversale choisie - Google Patents

Procédé et machine de fabrication d'anneaux métalliques avec une surface formée spécialement à partir d'une ébauche annulaire à section transversale choisie Download PDF

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Publication number
EP0163769A2
EP0163769A2 EP84115206A EP84115206A EP0163769A2 EP 0163769 A2 EP0163769 A2 EP 0163769A2 EP 84115206 A EP84115206 A EP 84115206A EP 84115206 A EP84115206 A EP 84115206A EP 0163769 A2 EP0163769 A2 EP 0163769A2
Authority
EP
European Patent Office
Prior art keywords
ring
blank
metal
deformation
rod
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Withdrawn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
EP84115206A
Other languages
German (de)
English (en)
Other versions
EP0163769A3 (fr
Inventor
Michael Kransnopolsky
Jacob Katz
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.)
Israel Military Industries Ltd
State of Israel
Original Assignee
Israel Military Industries Ltd
State of Israel
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 Israel Military Industries Ltd, State of Israel filed Critical Israel Military Industries Ltd
Publication of EP0163769A2 publication Critical patent/EP0163769A2/fr
Publication of EP0163769A3 publication Critical patent/EP0163769A3/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Withdrawn legal-status Critical Current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
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • 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
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/30—Making machine elements wheels; discs with gear-teeth
    • 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
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/761—Making machine elements elements not mentioned in one of the preceding groups rings

Definitions

  • the present invention generally relates to the treatment of metal to form special rings and, more particularly, to a novel method of forming a metallic ring with specially contoured surfaces including inner and/or outer surfaces contoured with grooves, ridges and/or protuberant sections extending in the ring's axial direction.
  • a need exists for special flat metallic rings the speciality being that the ring's inner and/or outer edge surfaces are contoured with grooves and ridges, extending parallel to the ring's axis and spaced apart a chosen distance.
  • There are several known methods for producing such rings however, they all suffer from at least one or more of the following disadvantages: a) their use results in large losses of scrap metal, sometimes about 50%; b) they are complex; and c) they are inefficient in terms of cost and labor.
  • contoured metal ring on the inner and/or outer edge surface and/or on either face or both faces thereof.
  • the edge surfaces and faces of a contoured metal ring according to the invention will be referred to collectively as "surfaces”.
  • a metal ring contoured on at least one of its surfaces comprising:
  • the ring may have either of the edge surfaces or both of them and/or either or both of its faces contoured.
  • the contours may be of ridges and grooves, as protuberant sections or of any other desired shapes.
  • the height of the rod preferably exceeds by at least 10% (ten per cent) the height of the finished ring.
  • the invention also provides a stamp type machine for making a metal ring by the above method which machine comprises first and second members reciprocable with respect to one another and adapted to cooperate with each other so as to form a cavity adapted to be occupied by a ring blank made of a metal rod whose ends are welded together, one of said members comprising a support surface for said blank and at least one of said members being subjectable to a force so as to apply stress forces to the blank sufficient to cause its deformation, whereby the blank metal fills said cavity.
  • a metal rod 10 of circular area of a selected diameter, designated D and of a length L between its ends 10a and 10b, is shown.
  • the total metallic volume V is clearly a function of its length L and diameter D.
  • the rod 10 is bent into the shape of a ring, designated by20, so that the rod's opposite ends 10a and 10b are juxtaposed, as represented by the small gap 21. These ends are welded together as represented by 22.
  • the rod need not be of circular cross-sectional shape and any other cross-sectional shape may be used.
  • the cross-sectional area of the rod designated Ar and its total volume V have to equal or exceed the cross-sectional area Af and the volume Vf of the finished ring.
  • the height of the ring 20, into which the rod is bent, along its axis has to exceed by not less than 10% (ten per cent) the height of the finished ring.
  • the unwelded ring is designated by 25. It should be pointed out that it is the welded ring 25 of thickness D which is used as a blank in the following steps of the process to form the desired ring with the contoured surfaces. Thus, it may be referred to as blank 25.
  • One example of the desired ring to be formed from blank 25, is shown in top view in Fig. 4 and is designated by 30. A cross-sectional view along lines I-I is also shown.
  • the thickness of blank 25, i.e. the diameter D of the rod 10 is chosen as a function of the desired thickness T of the finished ring 30, where D>T, while the length L of rod 10 is chosen as a function of the desired overall dimensions of the ring 30 with the particular contoured surfaces.
  • the ring 30 is shown with triangularly shaped ridges 35 and grooves 36 of the inner edge surface of the ring. However, other shaped grooves and ridges may be formed, on either or both the outer and inner edge surfaces.
  • Fig. 5 Attention is now directed to Fig. 5 in connection with which the formation of a novel ring such as ring 30 (Fig. 4) with grooves and ridges 36 and 35 on the inner surface from balnk 25 will be described.
  • the ring formation is performed in a stamp type mold, hereafter referred to as stamp 40, with a matrix or blank-supporting member 41. Supported on a bearing or support surface 42 is the blank 25. The blank is placed in position through opening 43.
  • the left half of Fig. 5 designated 5L is used to describe the parts before the ring is formed, while 5R shows the parts after ring formation.
  • a plunger 45 with a flat surface 46 are provided. It is surface 46 which applies a downward pressure P on the blank 25.
  • a die 48 whose outer surface is contoured such as with ridges and grooves generally designated by 50. It is the die's grooves which are filled with metal to form the ring's ridges, while the die's ridges end up forming the ring's grooves.
  • the degree of blank deformation should not be less than 10% (ten per cent) meaning that if the cross-sectional area of the blank and finished ring are compared, at least 10% (ten per cent) of the total have moved from the original position in the blank to a new position in the finished ring.
  • the plunger and die are raised and the now-formed ring removed from the block 41.
  • the ring formed by the steps just described is ring 30, as shown in Fig. 4.
  • the ridges 35 therein are actually the metal which flowed into the grooves 50 of the die 48 and the grooves 36 are formed by the spaces between the ridges 35 created during the process.
  • Deformation of the round blank 25 from the circular shape to that of the desired ring with a degree of deformation of at least 10% should be performed at high enough a degree of deformative action to provide at weld seam 22 structure and strength characteristics similar to those of the rod 10.
  • ridges and grooves may likewise be provided to the blank's outer surface (see Fig. 6). This can be achieved by providing the blank supporting member 41 with a die and proper grooves and ridges to engage the outer surface of the blank 25.
  • FIG. 6 It is a partial view of the blank 25 shown with inner die 50 with ridges 35 and grooves 36.
  • An outer die, designated 50a is shown with ridges 35a and grooves 36a.
  • metal represented by arrows 60
  • metal represented by arrows 62
  • ridges are of metal which during the process flowed into the grooves of the dies.
  • Fig. 7 used to describe one embodiment of ejecting or pushing out the ring 30 from the matrix 41 of stamp 40 after it has been shaped as desired.
  • elements like those previously described are designated by like numerals.
  • the left and right parts of Fig. 7, designated 7L and 7R, respectively, show the stamp in the conditions after ring completion and ejection, respectively.
  • a kicker or piston 70 with a push rod 71 are included in member 41 to slide therein.
  • the top of piston 70 is the blank- bearing surface 42 (see Fig. 5).
  • the die 45 is raised, as shown at 7R.
  • a force, designated by arrow 75 is applied to the push rod 71 thereby pushing it and the piston 70 upwardly to push or eject the finished ring 30 from the matrix cavity, designated by 77.
  • the finished ring is of uniform height or thickness, such as shown in Fig. 4 by the letter T.
  • the invention is, however, not intended to be limited thereto and the ring 30 may be shaped to be of different heights along different sections. Also, the invention is not intended to be limited to the formation of grooves and ridges only.
  • the stamp 40 includes a base 91, as shown in the left and right sections 9L and 9R, respectively.
  • the left section 9L shows the stamp during ring formation and 9R after the die was raised.
  • Fig. 10 is a cross-section along lines III-III in Fig. 9 with the die in the raised position.
  • the stamp base 91 includes a matrix comprising a lower or bottom part 92 and upper part 93, with a channel 94 therein.
  • a member 96 like piston 70 in Fig. 7, and push rod 97 are included.
  • die 90 it functions both as the plunger 45 and die 48 (Fig. 7). Part of its surface, designated 90a, comes in contact with the upper surface of the blank 30 whereat the ring is to have the lower height.
  • the lower surface has one or more recesses 90b into which during the process metal flows so as to form the bosses with greater height or cross-sectional area. Any excess metal flows into channel 94.
  • the excess metal gets shorn off from the ring, after the die is raised and the piston 96 pushes out the ring 30 by an upward force, provided by rod 97, and in Figs. 9 and 10 channels 94 are shown with shorn-off bits from previous steps.
  • Fig. 10 the bosses of the larger cross-sectional area are designated by 101-103, while 104-106 designate the sections of lower height. Numeral 107 designates excess metal from the last formed ring while 108 and 109 designate excess metal from two previously formed rings.
  • Such wear may be reduced by providing a stamp as shown in Fig. 11A-11D, wherein stages during the formation of a ring from a blank 120 are shown.
  • the stamp designated by 122 comprises the matrix 124 and the die 125.
  • the size of cavity 126 in the matrix extends from top to bottom as shown in these figures and further diagrammed by angles a and 6 each of which is smaller than 90 degrees.
  • the blank 120 rests on the bearing surface 128 of the plunger 130.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Forging (AREA)
  • Wire Processing (AREA)
EP84115206A 1984-06-05 1984-12-12 Procédé et machine de fabrication d'anneaux métalliques avec une surface formée spécialement à partir d'une ébauche annulaire à section transversale choisie Withdrawn EP0163769A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL72025A IL72025A (en) 1984-06-05 1984-06-05 Method and machine for producing a metallic ring with specially contoured surfaces from a ring-shaped blank of selected cross-section
IL72025 1984-06-05

Publications (2)

Publication Number Publication Date
EP0163769A2 true EP0163769A2 (fr) 1985-12-11
EP0163769A3 EP0163769A3 (fr) 1986-08-20

Family

ID=11055115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115206A Withdrawn EP0163769A3 (fr) 1984-06-05 1984-12-12 Procédé et machine de fabrication d'anneaux métalliques avec une surface formée spécialement à partir d'une ébauche annulaire à section transversale choisie

Country Status (3)

Country Link
EP (1) EP0163769A3 (fr)
JP (1) JPS6117336A (fr)
IL (1) IL72025A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2281527A (en) * 1993-08-31 1995-03-08 Ntn Toyo Bearing Co Ltd Cold forming method and apparatus
US5764051A (en) * 1993-08-31 1998-06-09 Ntn Corporation Cold forged toothed ring for producing rotational speed signals
EP0972588A2 (fr) * 1998-07-11 2000-01-19 Firma Carl Freudenberg Procédé de fabrication d'anneaux métalliques
FR2917653A1 (fr) * 2007-06-25 2008-12-26 Snecma Sa Outillage pour le matricage au pilon
DE102010053720A1 (de) * 2010-12-01 2012-06-06 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Verfahren zur Herstellung eines Kupplungskörpers
CN113441936A (zh) * 2021-07-20 2021-09-28 东莞市拓扬智能电子科技有限公司 双工位自动装焊环机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1377266A (en) * 1918-08-05 1921-05-10 Mossberg Frank Process for manufacturing metal rings
GB829107A (en) * 1956-03-26 1960-02-24 Christian Schondelmaier Process and apparatus for the production of toothed members, such as toothed wheels, toothed rims and the like
DE1261735B (de) * 1963-12-12 1968-02-22 Unterstuetzungskasse Der Lands Verfahren und Vorrichtung zum spanlosen Warmherstellen von Zahnraedern durch Warmumformung
DE3030247C1 (de) * 1980-08-09 1981-12-17 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Verfahren und Vorrichtung zur Herstellung eines Waelzlagerkaefigs

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS577345A (en) * 1980-06-16 1982-01-14 Musashi Seimitsu Kogyo Kk Forging device for forming tooth profile on outside circumference of ringlike blank material
JPS5736034A (ja) * 1980-08-11 1982-02-26 Musashi Seimitsu Kogyo Kk Ringujosozainogaishunihagataokeiseisurutanzohoho

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1377266A (en) * 1918-08-05 1921-05-10 Mossberg Frank Process for manufacturing metal rings
GB829107A (en) * 1956-03-26 1960-02-24 Christian Schondelmaier Process and apparatus for the production of toothed members, such as toothed wheels, toothed rims and the like
DE1261735B (de) * 1963-12-12 1968-02-22 Unterstuetzungskasse Der Lands Verfahren und Vorrichtung zum spanlosen Warmherstellen von Zahnraedern durch Warmumformung
DE3030247C1 (de) * 1980-08-09 1981-12-17 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Verfahren und Vorrichtung zur Herstellung eines Waelzlagerkaefigs

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2281527A (en) * 1993-08-31 1995-03-08 Ntn Toyo Bearing Co Ltd Cold forming method and apparatus
US5544548A (en) * 1993-08-31 1996-08-13 Ntn Corporation Cold forming method of toothed ring-shaped products and forming apparatus for its use
GB2281527B (en) * 1993-08-31 1997-12-10 Ntn Toyo Bearing Co Ltd Cold forming method
US5764051A (en) * 1993-08-31 1998-06-09 Ntn Corporation Cold forged toothed ring for producing rotational speed signals
EP0972588A2 (fr) * 1998-07-11 2000-01-19 Firma Carl Freudenberg Procédé de fabrication d'anneaux métalliques
EP0972588A3 (fr) * 1998-07-11 2001-01-31 Firma Carl Freudenberg Procédé de fabrication d'anneaux métalliques
FR2917653A1 (fr) * 2007-06-25 2008-12-26 Snecma Sa Outillage pour le matricage au pilon
EP2011585A1 (fr) * 2007-06-25 2009-01-07 Snecma Outillage pour le matriçage au pilon
US8181501B2 (en) 2007-06-25 2012-05-22 Snecma Tool for rammer die-cutting
DE102010053720A1 (de) * 2010-12-01 2012-06-06 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Verfahren zur Herstellung eines Kupplungskörpers
CN113441936A (zh) * 2021-07-20 2021-09-28 东莞市拓扬智能电子科技有限公司 双工位自动装焊环机

Also Published As

Publication number Publication date
JPS6117336A (ja) 1986-01-25
IL72025A0 (en) 1984-10-31
EP0163769A3 (fr) 1986-08-20
IL72025A (en) 1986-08-31

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