EP1459822A1 - Vorrichtung zum Entgraten von Schmiedstücken - Google Patents

Vorrichtung zum Entgraten von Schmiedstücken Download PDF

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Publication number
EP1459822A1
EP1459822A1 EP04290688A EP04290688A EP1459822A1 EP 1459822 A1 EP1459822 A1 EP 1459822A1 EP 04290688 A EP04290688 A EP 04290688A EP 04290688 A EP04290688 A EP 04290688A EP 1459822 A1 EP1459822 A1 EP 1459822A1
Authority
EP
European Patent Office
Prior art keywords
plate
deburring
slide
punch
punches
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.)
Granted
Application number
EP04290688A
Other languages
English (en)
French (fr)
Other versions
EP1459822B1 (de
Inventor
Jean-Yves Morin
Erwin Fogliatto
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP1459822A1 publication Critical patent/EP1459822A1/de
Application granted granted Critical
Publication of EP1459822B1 publication Critical patent/EP1459822B1/de
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
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/08—Making machine elements axles or shafts crankshafts
    • 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

Definitions

  • the present invention relates to a tool for deburring forged mechanical parts, such as crankshafts for motor vehicles.
  • crankshafts of four or six cylinder engines are forged and have the particularity of having counterweight faces and spokes which remain unworked, which saves time in terms of machining.
  • the invention provides a tool which, while allowing deburring of crankshafts, virtually eliminates deflection of the crankshaft.
  • the tool allowing the deburring of forged mechanical parts is characterized in that it comprises an upper deburring punch fixed to a vertically movable slide. guided press; a fixed lower deburring plate secured to a support plate; a lower punch passing through the deburring plate in line with the upper punch, integral with a vertically movable plate relative to the deburring plate under the latter and being able to occupy a high projecting position of the deburring plate at which a forged piece is deposited on the lower punch before the controlled descent of the slider and then clamped between the lower and upper punches during the lowering movement of the slider which causes the concomitant descent, relatively to the deburring plate, punches enclosing the forged part and the vertically movable plate against the restoring force of elastic members so as to cut the burr of the forged part when it comes into contact with the plate 'deburring, the elastic members exerting an increasing pressure on the
  • the slide comprises, integral with the latter, at least two identical vertical feet located on either side of the upper punch and coming into contact when the slide is lowered respectively on two adjustable stops kinematically linked to the plate vertically mobile and located on either side of the deburring plate to move this plate down, and the elastic members are interposed between the vertically mobile plate and the support plate.
  • the vertically movable plate is integral with two central branches respect two parallel parts spaced in a stirrup between the lateral branches of which is disposed the fixed deburring plate and in that the adjustable stops are mounted respectively on the end faces free from the lateral branches of the stirrup parts.
  • shims are interposed between the stops and the end faces of the lateral branches of the stirrup parts so as to adjust the spacing between the slide and the vertically movable plate corresponding to the space required between the punches to a determined value. to grip the forged part as soon as the feet contact the stops.
  • each stop comprises a circular head on which the corresponding foot comes into contact and a cylindrical pin detachably fixed in a hole in the lateral branch of the stirrup piece.
  • each elastic member is interposed between the corresponding lateral branch of the stirrup piece and the support plate and comprises a stack of elastic washers mounted concentrically on a cylindrical axis fixed in the support plate by projecting perpendicularly therefrom. to engage slidingly in the end of the hole opposite to that receiving the stopper pin.
  • the slider further comprises a horizontal plate traversed by the upper punch, with controlled movement relative to the slider and which can be moved down relative to the upper punch when the slider returns to its high inactive position to eject the burr from the upper punch and cause it to drop in a recycling bin.
  • the press slide is mounted vertically movable on two guide columns integral with the support plate.
  • a robot is provided to deposit the forged workpiece with its gripper arms on the lower punch and subsequently remove the deburred forged workpiece from this punch.
  • the stops can be of the electric or hydraulic type and are adjusted remotely, for example from the press control console, which can be of the hydraulic type.
  • the tooling of the invention will be described in the application to the deburring of a forged crankshaft for an internal combustion engine, for example with four or six cylinders, but it is understood that it can be applied to any other type of forged mechanical part.
  • crankshaft 1 is first of all preferably forged in two strokes under an automatic press, for example of 5000 tonnes, and it is then preferably transferred by the clamps 2a of a robot arm 2 , shown only in Figure 11, the tool of the invention to be trimmed and straightened simultaneously as will be described below in accordance with the invention.
  • the press to which the various tools of the invention are mounted can be a mechanical or hydraulic press of a power dependent on the forged part which will have to be deburred and straightened.
  • the power of such a press can range from 300 to 1000 tonnes.
  • the tool of the invention as shown in the figures comprises an upper part fixed on the slide 3 vertically movable relative to a lower horizontal support plate 4 by means of two vertical telescopic columns 5 whose lower ends are secured to the plate support 4, the slide 3 extending parallel above the plate 4.
  • An upper deburring punch 6 is fixed by any appropriate means under the slide 3 so as to follow the downward and upward movements of this slide relative to the support plate 4.
  • a rectangular plate 7 intended for the extraction or the ejection of the cut out burr 1a of the crankshaft 1 as will be seen later is fixed under the slide 3 parallel to this one and can be controlled so as to move vertically from its position rest near slide 3 at its burr extraction position 1a secured to the upper punch 6 remote from this slide.
  • the plate 7 has four guide pins 8 disposed approximately at the four corners of the plate 7 and which can slide respectively in four conjugate holes 9 of the slide 3. The movements of descent and rise of the plate 7 relative to the slide 3 can be controlled by a jack (not shown).
  • the upper punch 6 passes through a conjugate opening 7a of the extraction plate 7 so that the latter can move vertically relative to the punch 6.
  • the slider 3 further comprises four vertical feet 10 integral with the slider projecting under the latter and two by two disposed on either side of the extraction plate 7 and of the upper punch 6.
  • the tooling further comprises a fixed lower deburring plate 11 secured to a generally parallelepipedic support block 12 fixed to the support plate 4 and a lower punch 13 passing through the deburring plate 11 directly above the upper punch 6.
  • the deburring plate 11 comprises a deburring relief 11a cooperating with the punch 13 to cut out the burr 1a of the crankshaft 1.
  • the lower punch 13 is integral with a plate 14 extending transversely to the support plate 4 in a direction parallel to the telescopic guide columns 5 and movable vertically relative to the deburring plate 11 under the latter so as to occupy a high position at which the upper punch 13 projects from the deburring plate 11 and its relief 11a at a low position at which the burr 1a of the crankshaft 1 is cut from the latter by the relief 11a of the deburring plate 11.
  • the plate 14 is secured to two identical pieces in stirrup 15 spaced parallel to each other by extending perpendicular to the plane vertical passing through the two guide columns 5. More specifically, the plate 14 for supporting the lower punch 13 is fixed on the two central branches 15a of the stirrup parts 15 between the two lateral branches 15b of these two parts. The plate 14 extends perpendicularly to the central branches 15a of the stirrup pieces 15 and the deburring plate 11 extends between the lateral branches 15b of the stirrup pieces 15.
  • Elastic members 16 are interposed between the stirrup parts 15 and the support plate 4 so as to bring the stirrup parts 15 back to the high position relative to the support plate 4 and therefore to the block 12. The downward movement of the stirrup parts 15 towards the plate 4 is thus effected against the restoring force of the elastic members 16.
  • Each of these latter is preferably constituted by a stack of elastic washers 17 mounted concentrically with a vertical cylindrical axis 18 integral with the plate 4 and the upper end of which protrudes from this plate is slidably mounted in a bore 19 produced through a corresponding one of the lateral branches 15b of a stirrup piece 15.
  • four elastic members 16 are provided, associated respectively with the four lateral branches extending upwards 15b of the stirrup pieces 15.
  • each elastic member 16 In the high position of the stirrup pieces 15 and therefore of the punch lower 13, approximately a lower half of the stacked washers 17 of each elastic member 16 is housed in a corresponding vertical bore 20 of the support plate 4 and some washers 17 of the upper part of the elastic member 16 are housed in a corresponding counterbore 21 produced under the vertical lateral branch 15b of the stirrup piece 15 coaxially with the bore 1a.
  • the upper and lower washers 17 of each elastic member 36 are supported respectively on two rigid washers 22 bearing on the bottom of the counterbore 21 and the corresponding bore 20, the washer 22 being able to slide along the associated axis 18 during vertical movements of the stirrup part 15 relative to the support plate 4.
  • an adjustable stop 23 comprising a circular head 24 on which can come into contact a corresponding foot 10 of the slide 3 and a cylindrical pin 25 removably fixed in the end of the bore 19 opposite to that into which the upper end of the guide pin 18 enters.
  • Wedges 26 can be interposed between the head 24 of each stop 23 and the upper face of the corresponding lateral branch 15b of a stirrup piece 15.
  • the wedges 26 allow the spacing between the slide 3 and to be adjusted to a determined value. the stirrup parts 15, therefore the vertically movable plate 14, as soon as the feet 10 come into contact with the heads 24 of the stops 23 when the slide 3 descends. This spacing value determines the space required between the upper punches 6 and lower 13 to enclose between them the forged part 1.
  • each punch 6 and 13 may consist of a plurality of vertical walls 6b, 13b extending in a longitudinal direction parallel to the guide columns 5 opposite one another so as to grip the crankshaft at separate locations located along it.
  • the robot 2 grasps by its gripping pliers 2a the forged crankshaft 1 with its burr 1a to place this assembly on the lower punch 13 as shown in FIGS. 2 and 3 which show that the lower part of the crankshaft 1 is housed in the impressions 13a combined with the lower punch 13 with the burr 1a projecting all around the crankshaft 1 above of the punch 13 in the longitudinal median plane of the crankshaft 1.
  • the punch 13 occupies its high projecting position above the relief 11a of the deburring plate 11 under the action of the upward restoring force exerted by the elastic members 16 .
  • FIGS. 4 and 5 illustrate the confinement of the crankshaft 1 between the punches 6 and 13 at the moment when the feet 10 have just contacted the stops 23, the lower punch 13 still occupying its high position above the deburring plate 11.
  • the slider 3 also drives down the crankshaft and its burr against the restoring force exerted by the elastic members 16 and when the burr of the forged piece 1 comes into contact with cutting the relief 11a of the deburring plate 11, the pressure exerted by the elastic members 16 on the crankshaft via the punches 6, 13 is approximately 120 tonnes, which makes it possible to straighten the crankshaft which would have been folded during the stamping operation before being brought to the press of the invention.
  • FIGS 7 and 8 show the state of the slide 3 at its lowest position at which the burr has been cut by the deburring plate 11 and disengaged up the crankshaft to be arranged around the upper punch 6 which retains this burr.
  • the slider 3 is then controlled so as to go back up and the elastic members 16 exert the upward return force for holding the crankshaft 1 sandwiched between the two upper 6 and lower 13 punches until the lower puncher 13 reaches its high position.
  • the slider 3 carries with it the burr 1a secured to the lower end of the deburring punch 6 which remains thereon ci when the slide 3 arrives at the end of its travel in its high position.
  • FIG. 11 shows that the robot 2 located at the rear of the press has gripped by its pliers 2a the cranked crankshaft 1 to extract it from the lower punch 13 and the extraction plate 7 has been driven down to remove the burr 1a of the upper punch 6 and drop it into a recovery receptacle 2b of the robot 2 which then withdraws from the press to evacuate the crankshaft 1 and the burr 1a.
  • the press according to the invention thus makes it possible simultaneously to deburr a forged crankshaft and to straighten it in the event that it has been bent during the previous stamping operation so as to practically cancel the defect in deflection of this crankshaft, whereas previously such crankshafts could have arrows up to 1.8 mm causing great difficulty in balancing them, intolerable imbalance in the case of a crankshaft of internal combustion engine with four or six cylinders.
  • control console of the press can be used to remotely control the movement of the slide 3, the displacement cylinder of the extraction plate 7 of the burr 1a and the electric or hydraulic stops for adjusting the space. to enclose the crankshaft between the two upper 6 and lower 13 punches of the tool.
  • the various tools of the invention can be mounted on a traditional mechanical or hydraulic press with a power obviously dependent on the size of the forged part to be deburred and straightened, power which can range from 300 to 1000 tonnes for deburring and straightening a crankshaft as already mentioned previously.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
EP04290688A 2003-03-17 2004-03-12 Vorrichtung zum Entgraten von Schmiedstücken Expired - Lifetime EP1459822B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0303236 2003-03-17
FR0303236A FR2852552B1 (fr) 2003-03-17 2003-03-17 Outillage permettant l'ebarbage de pieces mecaniques forgees

Publications (2)

Publication Number Publication Date
EP1459822A1 true EP1459822A1 (de) 2004-09-22
EP1459822B1 EP1459822B1 (de) 2007-05-09

Family

ID=32799673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04290688A Expired - Lifetime EP1459822B1 (de) 2003-03-17 2004-03-12 Vorrichtung zum Entgraten von Schmiedstücken

Country Status (5)

Country Link
EP (1) EP1459822B1 (de)
AT (1) ATE361798T1 (de)
DE (1) DE602004006331T2 (de)
ES (1) ES2285374T3 (de)
FR (1) FR2852552B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2862646A1 (de) * 2013-10-15 2015-04-22 Rolls-Royce plc Werkzeug zum Abschneiden
CN105312400A (zh) * 2014-07-31 2016-02-10 桂林福达重工锻造有限公司 一种能快速修理零件立体切边的模具
CN108044009A (zh) * 2017-12-07 2018-05-18 安徽吉思特智能装备有限公司 一种热锻用冲压装置
CN111992655A (zh) * 2019-05-27 2020-11-27 辽宁五一八内燃机配件有限公司 一种大型内燃机整体曲轴模锻方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103071751B (zh) * 2012-08-22 2015-07-01 昌利锻造有限公司 一种六拐曲轴的锻造方法
DE102019203948A1 (de) 2019-03-22 2020-09-24 Zf Friedrichshafen Ag Vorrichtung und Verfahren zum Entgraten mindestens einer Bohröffnung eines metallischen Werkstücks
CN112453200B (zh) * 2020-10-29 2022-10-18 中国航发南方工业有限公司 导流板成型装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59225842A (ja) * 1983-06-06 1984-12-18 Honda Motor Co Ltd 型鍛造成形品のばり抜き装置
JPS63286234A (ja) * 1987-05-20 1988-11-22 Sumitomo Metal Ind Ltd 型鍛造品のバリ抱抜き方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59225842A (ja) * 1983-06-06 1984-12-18 Honda Motor Co Ltd 型鍛造成形品のばり抜き装置
JPS63286234A (ja) * 1987-05-20 1988-11-22 Sumitomo Metal Ind Ltd 型鍛造品のバリ抱抜き方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 100 (M - 376) 2 May 1985 (1985-05-02) *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 094 (M - 804) 6 March 1989 (1989-03-06) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2862646A1 (de) * 2013-10-15 2015-04-22 Rolls-Royce plc Werkzeug zum Abschneiden
CN105312400A (zh) * 2014-07-31 2016-02-10 桂林福达重工锻造有限公司 一种能快速修理零件立体切边的模具
CN108044009A (zh) * 2017-12-07 2018-05-18 安徽吉思特智能装备有限公司 一种热锻用冲压装置
CN111992655A (zh) * 2019-05-27 2020-11-27 辽宁五一八内燃机配件有限公司 一种大型内燃机整体曲轴模锻方法

Also Published As

Publication number Publication date
ES2285374T3 (es) 2007-11-16
DE602004006331D1 (de) 2007-06-21
DE602004006331T2 (de) 2008-01-10
FR2852552B1 (fr) 2006-05-19
ATE361798T1 (de) 2007-06-15
FR2852552A1 (fr) 2004-09-24
EP1459822B1 (de) 2007-05-09

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