EP0054522A2 - Verfahren zur Herstellung von Scharnieren, insbesondere für Autotüren - Google Patents

Verfahren zur Herstellung von Scharnieren, insbesondere für Autotüren Download PDF

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Publication number
EP0054522A2
EP0054522A2 EP81830241A EP81830241A EP0054522A2 EP 0054522 A2 EP0054522 A2 EP 0054522A2 EP 81830241 A EP81830241 A EP 81830241A EP 81830241 A EP81830241 A EP 81830241A EP 0054522 A2 EP0054522 A2 EP 0054522A2
Authority
EP
European Patent Office
Prior art keywords
press
projection
dies
blank
blanks
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Withdrawn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
EP81830241A
Other languages
English (en)
French (fr)
Other versions
EP0054522A3 (de
Inventor
Renzo Grattapaglia
Giuseppe Concina
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.)
Algat SpA
Original Assignee
Algat SpA
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 Algat SpA filed Critical Algat SpA
Publication of EP0054522A2 publication Critical patent/EP0054522A2/de
Publication of EP0054522A3 publication Critical patent/EP0054522A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B21K13/00—Making locksmiths' goods, e.g. handles for cases
    • B21K13/02—Making locksmiths' goods, e.g. handles for cases hinges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/38—Making other particular articles locksmith's goods, e.g. handles
    • B21D53/40—Making other particular articles locksmith's goods, e.g. handles hinges, e.g. door hinge plates
    • 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
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08—Upsetting
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/531—Doors

Definitions

  • the present invention relates to hinges, particularly: for vehicle doors, of the type comprising two rectangular plates provided with holes for the passage of screws for fixing it, respectively, to a door and to a support structure, each of the two plates being provided on one side with at least one flat projection which, being of the same thickness as the plate, has sides parallel to the two sides of the plate adjacent to the said side and terminates with a substantially cylindrical enlargement traversed by an axial hole intended to receive the hinge pin of the hinge, the axis of the said hole being offset with respect to the plane of the associated plate.
  • This known method is usable for the manufacture of hinges of the type in which the axis of the hole of the cylindrical enlargement of each plate is contained in a median plane parallel to the major faces of the plate and equi-distant from such faces.
  • the object of the present invention is to provide a method usable for the manufacture of hinges in which the axis of the hole of the cylindrical enlargement of each projection of each plate is offset with respect to said median plane of the plate.
  • the principle characteristic of the method according to the invention lies in the fact that, before the upsetting operation in the press, each of the two first blanks are subjected to a bending operation about a line parallel to and adjacent the side of the plate which is provided with the flat projection, whereby to dispose said projection into a plane inclined with respect to the plane of the plate.
  • the upsetting operation of each of the first blanks, which takes place in a press comprises the following stages:
  • the said upsetting operation is also performed by the above-described stages.
  • the method according to the invention differs from the one which has already been proposed by the fact that the facing surfaces of the dies of the die set, intended to press the first blank between them in correspondence with its major faces, each have two flat.sections inclined with respect to one another by an angle corresponding to the angle of the said bend in the first blank.
  • a further characteristic of the method according to the invention lies in the fact that, in order to perform the upsetting operation, there is provided a press utilising a pair of dies for each of the two first blanks respectively, whereby to allow the two elements of a hinge to be obtained at each operation of the press.
  • the volume of the portion of the flat projection of the first blank which traverses the cylindrical cavity of the die set and projects into the said channel when the first blank is clamped between the two dies of the die set is greater than the volume of the said cylindrical cavity, so that the cylindrical enlargement obtained by the upsetting operation has an external longitudinal tooth on the side thereof diametrically opposite the region of connection of the cylindrical enlargement with the plate.
  • the present invention also relates to a press tool usable in a press to perform the upsetting operation constituting a stage in the above-described method.
  • the invention also relates to a press tool usable in a press for subjecting a blank, constituted by a rectangular plate provided on one side with at least one flat projection having a thickness equal to that of the plate and two sides parallel to the two sides of the plate adjacent to the said side, to an upsetting operation, for the purpose of obtaining a cylindrical enlargement at the free end of the said projection.
  • a press tool of the above-indicated type has already been proposed, this comprising a die set which includes:
  • a further object of the present invention is to provide a press tool of the type indicated above usable for blanks of the type in which each flat projection is disposed in a plane which is inclined with respect to the plane of the associated plate.
  • the main characteristic of the press tool according to the present invention lies in the fact that each of the said facing surfaces of the dies of the die set,intended to clamp the major faces of the blank between them, has two flat sections inclined with respect to one another by an angle corresponding to the angle of inclination of each projection of the blank with respect to the corresponding plate.
  • a further characteristic of the press tool according to the invention lies in the fact that the volume of the said cylindrical cavity is less than the volume of the portion of the flat projection of the blank which traverses the said cavity and which projects into the said channel when the blank is clamped between the dies of the die set.
  • the press tool according to the present invention includes two die sets respectively positioned to simultaneously subject two blanks to the said upsetting operation whereby to allow the two elements of a hinge to be obtained at each operation of the press.
  • the two punches of the two die sets form- i n g part of the tool are slidable along the direction of movement of the movable members of the press and are directly controlled by these latter, whilst the two dies of each of the two die sets are movable, one with respect to the other, in a direction perpendicular to the direction of movement of the movable members of the press, the relative approach of the said dies being controlled by wedge means displaceable in the direction of movement of the movable members of the press.
  • the two dies of each of the two die sets are movable with respect to one another in the direction of movement of the movable members of the press, the relative approach of the said dies being directly controlled by these movable members, whilst the two punches of the two die sets are each slidable in a direction perpendicular to the direction of movement of the movable members of the press and are controlled by wedge means displaceable in the direction of movement of the movable members of the press.
  • FIG. 1 a strip of sheet metal is indicated 1. This strip is subjected to a combined operation of punching, to form a plurality' of holes 2, and fine blanlc--ing along the lines indicated 3 and 4, by means of a stepped fine blanking die.
  • the blank 5 is constituted by a rectangular plate 7 having on three sides the final dimensions of the hinge element which it is -desired to obtain, and on the fourth side a flat projection 8 with a thickness which is equal to the thick- thickness of the plate 7 and sides parallel to the two sides of the plate 7 which are adjacent to the side provided with the projection 8.
  • the blank 6 is constituted by a rectangular plate 9 having, on three sides, the final dimensions of the hinge element which it is desired to obtain, and on the fourth side two flat projections 10 arranged in complementary positions with respect to the flat projection 8 of the blank 5.
  • the projections 10 have a thickness equal to the thickness of the plate and sides parallel to the sides of the plate which are adjacent to the side provided with the projections themselves.
  • the holes 2 with which each of the two blanks 6,7 - is provided are intended to permit the fixing of the finished hinged elements to the door and to the body of a motor vehicle,respectively.
  • Figures 5 and 6 are perspective views of the two finished hinge elements obtainable starting from the sheet metal strip 1 by the method according to the present invention.
  • the hinge element obtainable starting from the blank 5 is generally indicated 11.
  • the finished hinge element 11 differs from the blank 5 in that the plate 7 is provided with a flat projection 12 the width of which corresponds to the width of the flat projection 8 of the blank 5 and of a reduced height with respect to the height of the projection 8.
  • the projection 12 ends, moreover, with a cylindrical enlargement 13 having an axis parallel to the side of the plate which is provided with the projection 12.
  • the enlargement 13 is traversed by an axial hole 14 intended to receive the hinge pin of the hinge.
  • a finished hinge element obtainable starting from the blank 6 illustrated in Figure 2 is generally indicated 15; the finished hinge element 15 differs from the blank 6 mainly by the fact that the plate 9 is provided with two projections 16 the width of which is equal to that of the projections 1 0 of the blank 6 whilst the height of which is less than that of the projections 10 of the blank 6.
  • the flat projections 16 end with two cylindrical enlargements 17 having axes parallel to the side of the plate 9 which is provided with such projections.
  • Each cylindrical en- l argement 17 is, moreover, traversed by an axial hole 1 '8 which is intended to receive the hinge pin of the hinge.
  • Each of the cylindrical enlargements 13,17 of the finished hinge elements 11,15 has, moreover, an external longitudinal tooth 19 the function of which will be described below, this being disposed on the side diametrically opposite the corresponding projections 12,16.
  • the method according to the invention is usable to obtain hinge elements of the type illustrated in Figures 5 and 6, that is to say,hinge elements in which the axis of each of the cylindrical enlargements13,17 is offset with respect to a plane parallel to the major faces of the respective plate and equi-distant from such major faces.
  • the two blanks 5,6 are subjected to a bending operation in such a way as to obtain the two blanks 20,21 illustrated in Figures 3, 4 .
  • the bending of each of the two blanks 5,6 is effected along a line 22 adjacent to the side of the respective plate which is provided with the flat projection or projections.
  • the blank 20 has a flat projection 8 lying in a plane which is inclined with respect to the plane of the corresponding plate 7, whilst the blank 21 has two flat projections 10 lying in a plane inclined with respect to the plane of the corresponding plate 9.
  • each of the two blanks 20,21 is subjected to a cold upsetting operation in a press to derive, in correspondence with each of the projections 8,10, the cylindrical enlargements 13 and 17 and the corresponding longitudinal teeth 19.
  • a press tool is generally indicated 23, this tool being usable in a single-acting press .and including a pair of die sets 24 respectively usable for effecting the said upsetting operation on the two blanks 20,21. Thanks to this characteristic, two hinge elements are obtained at each stroke of the press. The working cycle is subsequently completed by forming the axial holes 14,18 in the cylindrical enlargements 13,17 formed by means of the upsetting operation.
  • the press tool 23 includes. a fixed base structure 25 in which there are disposed two die sets. 24.
  • Each die set 24 includes a fixed die 26 and a movable die 27 mounted so as to be slidable in a direction perpendicular to the vertical direction of movement of the ram (not illustrated) of the press.
  • Each pair of dies 26,27 has two facing surfaces 26a, 27a (see Figure 11) intended to clamp the associated blank between them in correspondence with its major faces.
  • the pair of dies 26,27 shown on the left of Figure 7 are intended to clamp between them the blank 20, whilst the pair of dies 26,27 shown on the right of Figure 7 are intended to clamp between them the blank 21.
  • each of the facing surfaces 26a,27a has two flat sections, respective- indicated 28,29 and 30,31, which are inclined with respect to one another by an angle corresponding to the angle by which the respective blank is bent.
  • the two flat sections 29,31 of the facing surfaces 26a,27a of the two dies 26,27 of each die set 24 have two recesses 32 which together define a cylindrical cavity.
  • Figure 11 illustrates the blank 20 clamped between the two dies 26,27 of the die set 24 which is shown on the left in Figure 7.
  • the plate 7 of the blank 20 is clamped between the flat sections 2 8,30 of the facing surfaces of the dies, whilst the flat projection 8 is clamped between the flat sections 29 ,31 of the said facing surfaces.
  • the flat projection 8 diametrically traverses the cylindrical cavity defined by the recesses 32 and projects into an open channel 33 disposed about the prolongation of the flat projection 8, which is defined between the facing surfaces of the two dies.
  • the blank 21 is clamped between the two dies 26,27 in such a way as to position it with the plate 9 between the sections 28 and 30 of the facing surfaces of the two dies and with the flat projections 10 between the sections 29,31 of the said facing surfaces.
  • each channel 33 trere is slidably mounted a punch 34 fixed to a support 35 which in turn is carried by a structure 36 movable with the ram of the press in which the press tool illustrated is intended to be utilised.
  • the structure 36 includes an upper thrust plate 37 to which there is fixed an hydraulic cylinder 38 for the control of the vertical displacement of a wedge 39 the inclined sides of which press with their corresponding inclined surfaces 40 against the two horizontally slidable elements 41 which are fixed respectively to the two movable dies 27.
  • a spring 42 interposed between the free end of the wedge 39 and the fixed base structure 25 tends to bias the wedge 39 towards a raised end-of-stroke position.
  • the press tool illustrated in Figures 7,8 and 11 is usable for simultaneously subjecting the blanks 20,21 illustrated in Figures 3 and 4 to the upsetting operation necessary to obtain the finished hinge elements 11 ,15 illustrated in Figures 5 and 6.
  • This upsetting operation is performed in the following manner:
  • a lowering of the structure 37 is then controlled, in such a way as to bring the containment members 44 to press with their sides against the projections 8,10 of the two blanks 20,21.'
  • the hydraulic cylinder 38 the extension of which is obtainable independently from the movement of the structure 36, is then controlled to bring the wedge 39 against the action of the spring 42 so as to press with its inclined surfaces 40 against the elements 41.
  • the lowering of the wedge 39 causes separation of the two elements 41 from one another,thus pressing the two movable dies 27 against their respective fixed dies 26.
  • the dies 26 and 27 are illustrated in a condition where they clamp the corresponding blanks and the movable members are illustrated in the condition corresponding to the lowermost ends of the stroke of the press ram.
  • the volume of the cylindrical cavity defined by the recesses 32 formed in the facing surfaces of each pair of dies 26,27 is less than the volume of the part of the corresponding projection which diametrically traverses this cylindrical cavity and projects into the channel 33.
  • the teeth 19 of the two finished hinge elements 11, 15 serve the purpose of constituting a stop against the excessive opening of the door of the motor vehicle, during the manufacture of the motor vehicle itself,until it reaches the point in the production line at which the means for limiting the maximum opening of the door are assembled. During this manufacturing phase of the motor vehicle, an excessive opening of the door is prevented thanks to the engagement of the teeth 19 of the cylindrical enlargement of each element of the hinge against the end edge of the plate of the other hinge element.
  • Figures 9 and 10 illustrate a second embodiment of the press tool according to the invention usable in a double-acting press for performing the above-described upsetting operation.
  • the press tool which is generally indicated with the reference numeral 46, includes two die sets 24 for subjecting the two blanks 20,21 to an upsetting operation.
  • the press tool which is generally indicated with the reference numeral 46, includes two die sets 24 for subjecting the two blanks 20,21 to an upsetting operation.
  • Figure 10 only one of these die sets is illustrated, the parts of the tool which are not visible being symmetrical to those illus- trated across a vertical plane indicated with the line X-X.
  • the press tool 46 includes a fixed base structure 47 in which are slidably mounted the pressure columns 4 8 of the double-acting press. These pressure columns are connected in a known. way at their lower end to the pneumatic cylinders acting as elastic bearings.
  • a die 50 On the other end of the pressure columns 48 there is fixed, for each die set (indicated with the reference numeral 49), a die 50.
  • the die 50 is intended to cooperate with a die 51 fixed to a structure 52 which is rigidly connected to an upper plate 53 movable with the ram (not illustrated) of the press.
  • the press tool illustrated in Figures 9 and 10 differs therefore from that illustrated in Figures 7 and 8 by the fact that the direction of relative movement of the two dies of each die set is parallel to the direction of the movement of the press ram.
  • each die set 49 has facing i surfaces having an identical conformation to that of the surfaces 26a, 27a of the dies 26,27 illustrated in Figure 11.
  • Each of said surfaces therefore has two flat sections inclined with respect to one another and intended to come into contact, respectively, with the plate and with each projection of each blank, and are moreover provided with recesses to define the cylindrical cavities in which the cylindrical enlargements of the hinge elements are formed.
  • Each support 55 has, moreover, an inclined surface 56 which presses against the inclined sides of a wedge 57 rigidly connected to the base structure 47.
  • This base structure is moreover provided with a support 47a corresponding with each pair of dies 50,51 against which the dies press during the pressing operation.
  • the upper structure 52 is provided with lateral containment members 58 operable to press against the sides of the projections 8,10 of the two blanks during the pressing operation.
  • the containment members 58 are slidably mounted within supports 47b rigidly connected to the base structure 47, and their free ends are in contact with slidable elements 59 subjected to the action of springs 60.
  • Figures 9 and 10 illustrate the movable parts of the press tool in the positions which they assume at the end of the working stroke of the press ram.
  • the upsetting operation necessary to obtain the two finished hinge elements 11,15 from the two blanks 20,21 is performed in the following manner:
  • the structure 53 is lowered until the clamping of the blanks 20, 21 between the facing surfaces of the dies 50,51 of th two die sets takes place.
  • the lateral containment members 58 press the slidable elements 59 downwardly against the action of the spring 60 and press against the sides of the projections 8,10 of the two blanks.
  • the manufacture of the hinge elements must be completed with the operation necessary to form the axial holes 14,18 in the cylindrica enlargements 13,17.
  • the volume of the cylindrical cavity defined by the two recesses formed in the facing surfaces of the dies 50,51 of each die set is less than the volume of that part of each projection which, before the execution of the upsetting, diametrically traverses the said cylindrical cavity to project into the channel in which the respective punch is slidable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Hinges (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP81830241A 1980-12-17 1981-12-03 Verfahren zur Herstellung von Scharnieren, insbesondere für Autotüren Withdrawn EP0054522A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6892280 1980-12-17
IT68922/80A IT1129447B (it) 1980-12-17 1980-12-17 Procedimento per la fabbricazione di cerniere particolarmente per porte di veicoli

Publications (2)

Publication Number Publication Date
EP0054522A2 true EP0054522A2 (de) 1982-06-23
EP0054522A3 EP0054522A3 (de) 1982-08-04

Family

ID=11310928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81830241A Withdrawn EP0054522A3 (de) 1980-12-17 1981-12-03 Verfahren zur Herstellung von Scharnieren, insbesondere für Autotüren

Country Status (4)

Country Link
EP (1) EP0054522A3 (de)
JP (1) JPS57127541A (de)
DE (1) DE54522T1 (de)
IT (1) IT1129447B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101011716B (zh) * 2006-09-29 2010-05-12 伟业重工(安徽)有限公司 铰链页片套裁式带卷管级进模
US20130061437A1 (en) * 2010-03-24 2013-03-14 Hiroshi Ogawa Method for manufacturing motor vehicle door hinge
CN103464675A (zh) * 2013-09-24 2013-12-25 二重集团（德阳）重型装备股份有限公司 大型t型板锻件成形方法
US8984726B2 (en) 2010-12-17 2015-03-24 Hiroshi Ogawa Method of manufacturing automobile door hinge
CN111906226A (zh) * 2020-07-28 2020-11-10 沈阳和世泰通用钛业有限公司 铰链模锻件的成型方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61186141A (ja) * 1985-02-13 1986-08-19 Tokai Rika Co Ltd 拡大つば部加工方法及びその装置
JP6419144B2 (ja) * 2016-12-21 2018-11-07 株式会社三五 ヒンジ部材の製造方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888734A (en) * 1953-05-11 1959-06-02 Atwood Vacuum Machine Co Method of making hinge members
FR1443263A (fr) * 1965-05-07 1966-06-24 Procédé de fabrication de charnières à noeuds
DE2037832A1 (de) * 1970-07-30 1972-02-10 Scharwaechter Kg Verfahren zur Herstellung von Scharnieren

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101011716B (zh) * 2006-09-29 2010-05-12 伟业重工(安徽)有限公司 铰链页片套裁式带卷管级进模
US20130061437A1 (en) * 2010-03-24 2013-03-14 Hiroshi Ogawa Method for manufacturing motor vehicle door hinge
US8893360B2 (en) * 2010-03-24 2014-11-25 Hiroshi Ogawa Method for manufacturing motor vehicle door hinge
US8984726B2 (en) 2010-12-17 2015-03-24 Hiroshi Ogawa Method of manufacturing automobile door hinge
CN103464675A (zh) * 2013-09-24 2013-12-25 二重集团（德阳）重型装备股份有限公司 大型t型板锻件成形方法
CN103464675B (zh) * 2013-09-24 2015-06-17 二重集团（德阳）重型装备股份有限公司 大型t型板锻件成形方法
CN111906226A (zh) * 2020-07-28 2020-11-10 沈阳和世泰通用钛业有限公司 铰链模锻件的成型方法
CN111906226B (zh) * 2020-07-28 2022-10-04 沈阳和世泰通用钛业有限公司 铰链模锻件的成型方法

Also Published As

Publication number Publication date
IT1129447B (it) 1986-06-04
EP0054522A3 (de) 1982-08-04
IT8068922A0 (it) 1980-12-17
JPS57127541A (en) 1982-08-07
DE54522T1 (de) 1983-01-20

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