EP1459822B1 - Vorrichtung zum Entgraten von Schmiedstücken - Google Patents

Vorrichtung zum Entgraten von Schmiedstücken Download PDF

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Publication number
EP1459822B1
EP1459822B1 EP04290688A EP04290688A EP1459822B1 EP 1459822 B1 EP1459822 B1 EP 1459822B1 EP 04290688 A EP04290688 A EP 04290688A EP 04290688 A EP04290688 A EP 04290688A EP 1459822 B1 EP1459822 B1 EP 1459822B1
Authority
EP
European Patent Office
Prior art keywords
plate
deburring
punch
slide
tool according
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
EP04290688A
Other languages
English (en)
French (fr)
Other versions
EP1459822A1 (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 for example crankshafts for motor vehicles.
  • crankshafts are forged and have the particularity of having counterweight faces and spokes that remain forging, which saves time in machining.
  • JP 63 286234-A discloses a tool for deburring forged mechanical parts according to the preamble of claim 1 and wherein the barb is cut by means of a press which exerts a stress on the workpiece at the time of cutting, thus avoiding the formation of defects in the room.
  • the constraint is exerted by a cylinder which not only increases the costs of the press, but imposes the realization of a specific press.
  • the invention proposes a tool which, while allowing the deburring of crankshafts, virtually eliminates crankshaft deflections and is inexpensive since it can be mounted on a traditional press.
  • the invention proposes a tool according to claim 1.
  • the vertically movable plate is integral with two respective central branches of two parallel parts spaced apart and in the form of 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 free end faces of the lateral branches of the stirrup parts.
  • shims are interposed between the abutments and the end faces of the lateral branches of the stirrup pieces so as to adjust to a predetermined value the spacing between the slide and the vertically movable plate corresponding to the space required between the punches. to grip the forging as soon as the feet contact the stops.
  • each stop comprises a circular head on which comes into contact the corresponding foot and a removable cylindrical pin in a piercing of the side 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 projecting perpendicularly thereto. to engage sliding in the end of the bore opposite to that receiving the stopper pin.
  • the resilient members exert a return force on the lower punch now the forged part clamped between both punches until the lower punch returns to its high resting position protruding from the deburring plate.
  • the slider further comprises a horizontal plate traversed by the upper punch, with controlled displacement relative to the slider and movable downwardly relative to the upper punch when the slider returns to its inactive high position to eject the burr of the upper punch and drop it. in a recycling bin.
  • the slide of the press is mounted vertically movable on two guide columns integral with the support plate.
  • a robot is provided to deposit by its gripper arms the forged piece to smash on the lower punch and subsequently remove the deburred forging of this punch.
  • the stops may be of electrical or hydraulic type and are remotely controlled, for example from the control panel of the press, which may be of the hydraulic type.
  • crankshaft forged for internal combustion engine for example 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 forged preferably in two strokes under an automatic press, for example 5000 tons, and is then preferably transferred by the clamps 2a of a robot arm 2 , only shown in Figure 11, the tool of the invention to be deburred and straightened simultaneously as will be described below in accordance with the invention.
  • the press to which are mounted the various tools of the invention may be a mechanical or hydraulic press of a power dependent on the forged part that will deburr and straighten.
  • the power of such a press can range from 300 to 1000 tons.
  • the tool of the invention as shown in the figures comprises an upper part fixed on the slider 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 4, the slide 3 extending parallel to the top of the plate 4.
  • An upper trimming punch 6 is fixed by any suitable means under the slider 3 so as to follow the downward and upward movements of this slider relative to the support plate 4.
  • a rectangular plate 7 for extracting or ejecting the cut out flaw 1a of the crankshaft 1 as will be seen later is fixed under the slider 3 parallel thereto and can be controlled so as to move vertically from its position rest near the slider 3 at its extraction position of the burr 1a integral with the upper punch 6 away from this slider.
  • the plate 7 has four guide pins 8 arranged approximately at the four corners of the plate 7 and can respectively slide in four conjugate holes 9 of the slide 3. The descent and rise movements 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 secured to the slider projecting therebelow and two by two disposed on either side of the extraction plate 7 and the upper punch 6.
  • the tooling further comprises a fixed lower deburring plate 11 integral with a generally parallelepipedal support block 12 fixed on the support plate 4 and a lower punch 13 passing through the deburring plate 11 directly above the upper punch.
  • the deburring plate 11 comprises a deburring relief 11a cooperating with the punch 13 to cut the burr 1a of the crankshaft 1.
  • the lower punch 13 is secured to 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 trimming plate 11 beneath the latter so as to occupy a high position. to which the upper punch 13 protrudes 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 integral with two identical stirrup pieces 15 spaced parallel to each other while extending perpendicularly to the plane vertical direction passing through the two guiding 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 perpendicular to the central branches 15a of the stirrup parts 15 and the deburring plate 11 extends between the lateral branches 15b of the stirrup parts 15.
  • Elastic members 16 are interposed between the stirrup parts 15 and the support plate 4 so as to bring the stirrup parts 15 in the raised position relative to the support plate 4 and thus to the block 12. The downward movement of the stirrup parts 15 to the plate 4 is thus done against the restoring force of the elastic members 16.
  • Each of these is preferably constituted by a stack of spring washers 17 mounted concentrically to a vertical cylindrical axis 18 secured to the plate 4 and whose upper end protruding from this plate is slidably mounted in a bore 19 formed through a corresponding one of the lateral branches 15b of a stirrup member 15.
  • each elastic member 16 In the upper position of the stirrup parts 15 and thus of the punch lower 13, about 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 a few washers 17 of the upper portion of the elastic member 16 are housed in a corresponding counterbore 21 performed under the vertical side branch 15b of the stirrup part 15 coaxially with the bore 1a.
  • the upper and lower washers 17 of each resilient member 16 are respectively supported on two rigid washers 22 resting against the bottom of the countersink 21 and the corresponding bore 20, the washer 22 being 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 slider 3 and a cylindrical pin 25 removably fixed in the end of the bore 19 opposite that into which penetrates the upper end of the guide pin 18.
  • Shims 26 may be interposed between the head 24 of each abutment 23 and the upper face of the corresponding lateral branch 15b of a stirrup piece 15.
  • the wedges 26 make it possible to adjust the spacing between the slider 3 and the stirrup parts 15, and therefore the vertically movable plate 14, as soon as the feet 10 come into contact with the heads 24 of the abutments 23 during the lowering of the slide 3.
  • This spacing value determines the space required between the upper punches 6 and lower 13 to enclose the forging 1 between them.
  • 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 facing each other so as to grip the crankshaft to distinct locations located along it.
  • the arrows F1 and F2 in FIG. 1 symbolize the passage of a cooling liquid through a cooling circuit formed in the plate deburring 11, circuit not shown in the figures so as not to overload.
  • the robot 2 grasps the forged crankshaft 1 with its burr with its gripping tongs 2a. 1a to place this assembly on the lower punch 13 as shown in Figures 2 and 3 which show that the lower part of the crankshaft 1 is housed in the footprints 13a conjugate of the lower punch 13 with the burr 1a overflowing 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 position protruding above the relief 11a of the deburring plate 11 under the action of the upward restoring force exerted by the elastic members 16 .
  • the slider 3 is controlled so as to descend in a guided manner by the columns 5 towards the support plate 4 until the upper punch 6 comes to cap and grip the crankshaft 1 between this punch and the lower punch 13 and, simultaneously, the feet 10 come into contact respectively on the abutments 23.
  • the shims 26 located under the heads 24 of the abutments 23 have been previously adjusted according to the thickness of the forged crankshaft 1, the adjustment of these wedges to not leave that the space required for the crankshaft 1 between the punches 6, 13.
  • Such an adjustment is made in the present case manually, but can be automated by adjustable stops, electrical or hydraulic type, remotely controlled to determine their position adjusting the space just needed for the crankshaft 1 between the punches 6, 13.
  • Figures 4 and 5 illustrate the imprisonment of the crankshaft 1 between the punches 6 and 13 when the feet 10 have just contacted the stops 23, the lower punch 13 still occupies 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 resilient members 16 and at the moment when the burr 1 of the forging 1 comes into contact with the cut of 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 about 120 tons, which allows 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 slider 3 at its lowest position at which the burr was cut by the trimming plate 11 and disengaged upwards from the crankshaft to be arranged around the upper punch 6 which holds this burr.
  • the slider 3 is then controlled so as to rise and the elastic members 16 exert the upward restoring force for holding the crankshaft 1 sandwiched between the two upper and lower punches 6 until the lower punch 13 reaches its high position.
  • the slider 3 carries with it the burr solidarrise the lower end of the deburring punch 6 which remains on it ci when the slider 3 reaches the end of the race to its high position.
  • FIG. 11 shows that the robot 2 situated at the rear of the press has grasped with its tongs 2a the deburred crankshaft 1 to extract it from the lower punch 13 and the extraction plate 7 has been commanded downwards to remove the burr 1a of the upper punch 6 and fall 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 operating cycle described above is repeated to deburr and simultaneously straighten a new forged crankshaft 1 to burr 1a.
  • the press according to the invention thus simultaneously makes it possible to deburr a forged crankshaft and to straighten it in the event that it has been folded during the preceding stamping operation so as to practically cancel the deflection defects of this crankshaft, whereas previously such crankshafts could have arrows up to 1.8mm causing great difficulties in balancing thereof, intolerable imbalance in the case of a crankshaft four or six cylinder internal combustion engine.
  • control panel of the press can be used to remotely control the movement of the slider 3, the displacement cylinder of the extraction plate 7 of the burr 1a and the electrical or hydraulic stops for adjusting the space crankshaft between the two upper punches 6 and lower 13 of the tool.
  • the various tools of the invention can be mounted on a traditional mechanical or hydraulic press of a power depending of course on the size of the forged part to deburr and straighten, power ranging from 300 to 1000 tons for deburring and straightening a crankshaft as already mentioned before.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Claims (11)

  1. Vorrichtung zum Entgraten von Schmiedestücken (1), wie Kurbelwellen von Kraftfahrzeugen, umfassend eine Presse, einen oberen Putzstempel (6), der mit einem senkrecht verschiebbaren, von der Presse geführten Gleitstück (3) verbunden ist, eine untere starre Putzplatte (11), die mit einer Grundplatte (4) verbunden ist, einen lotrecht zur oberen Putzplatte (6) unteren, die Putzplatte (11) durchquerenden Putzstempel (13), der mit einer Platte (14) verbunden ist, die relativ zur Putzplatte (11) unter dieser senkrecht verschiebbar ist, und eine obere, über die Putzplatte (11) hinausragende Stellung einnehmen kann, auf der ein Schmiedestück (1) auf dem unteren Putzstempel (13) vor dem gesteuerten Absenken des Gleitstücks (3) angeordnet ist, und dann, eingeschlossen zwischen dem unteren (6) und oberem (13) Stempel, bei der Abwärtsbewegung des Gleitstücks (3), welche die gleichzeitige Abwärtsbewegung, relativ zur Putzplatte (11), der Putzstempel (6, 13), die das Schmiedestück (1) einschließen, und der senkrecht beweglichen Platte (14) entgegen der Rückhaltekraft elastischer Organe (16) verursacht, so dass der Grat (1a) des Schmiedestücks (1) entfernt wird, wenn es in Kontakt mit der Putzplatte (11) gelangt, wobei die elastischen Organe (16) auf die Stempel (6, 13) einen Druck ausüben, der mit zunehmender Abwärtsbewegung der Stempel (6, 13) durch die Putzplatte (11) zunimmt und es nötigenfalls erlaubt, das Schmiedestück (1) zu richten, und dadurch gekennzeichnet ist, dass das Gleitstück (3) mindestens zwei senkrechte identische, mit diesem verbundene Füße (10) umfasst, die sich an beiden Seiten des oberen Stempels (6) befinden und bei der Abwärtsbewegung des Gleitstücks (3) mit zwei entsprechenden einstellbaren Anschlägen (23) in Kontakt kommen, die mit der senkrecht beweglichen Platte (14) kinematisch verbunden sind und sich an beiden Seiten der Putzplatte (11) befinden, um die Platte (14) nach unten entgegen der Rückhaltekraft der elastischen Organe (16) zu verschieben.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die senkrecht bewegliche Platte (14) mit zwei zentralen Abzweigungen (15a) jeweils von zwei beabstandeten parallelen und bügelförmigen Teilen (15) verbunden ist, zwischen deren seitlichen Abzweigungen (15b) die starre Putzplatte (11) befestigt ist, und dadurch, dass die einstellbaren Anschläge (23) jeweils auf den Seiten der freien Enden der seitlichen Abzweigungen (15b) der bügelförmigen Teile (15) montiert sind.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass sich zwischen den Anschlägen (23) und den Seiten der Enden der seitlichen Abzweigungen (15b) der bügelförmigen Teile (15) Keile (26) befinden, um den Abstand zwischen dem Gleitstück (3) und der senkrecht beweglichen Platte (14) auf einen bestimmten Wert einzustellen, der dem zwischen den Stempeln (6, 13) notwendigen Platz entspricht, um das Schmiedestück (1) zu umschließen, sobald die Füße (10) die Anschläge (23) kontaktieren.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass jeder Anschlag (23) einen kreisrunden Kopf (24) aufweist, auf dem der entsprechende Fuß (10) in Kontakt kommt, und ein zylindrisches Teil (25), das in einer Bohrung (19) der seitlichen Abzweigung (15b) des bügelförmigen Teils (15) beweglich befestigt ist.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass sich jedes elastische Organ (16) zwischen der entsprechenden seitlichen Abzweigung (15b) des bügelförmigen Teils (15) und der Grundplatte (4) befindet und einen Stapel elastischer Scheiben (17) umfasst, die konzentrisch auf einer zylindrischen Achse (18) montiert sind, die in der Grundplatte (4) befestigt ist und senkrecht über diese hinausragt, um gleitend in das Ende der Bohrung (19) einzugreifen, das dem Ende gegenüberliegt, welches das Teil (25) des Anschlags (23) aufnimmt.
  6. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass bei der Abwärtsbewegung der Stempel (6, 13) nach dem Entfernen des Grats (1a) sich dieser mit dem oberen Stempel (6) verbindet, indem er ihn umgibt, und bei der gesteuerten Aufwärtsbewegung des Gleitstücks (3) die elastischen Organe (16) eine Rückhaltekraft auf den unteren Stempel (13) ausüben, wodurch das Schmiedestück (1) zwischen den zwei Stempeln (6, 13) eingeschlossen bleibt, bis der untere Stempel (13) in seine obere Ruhestellung über der Putzplatte (11) zurückgekehrt ist.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass das Gleitstück (3) weiterhin eine waagerechte Platte (7) umfasst, die vom oberen Stempel (6) durchquert wird, mit relativ zum Gleitstück (3) gesteuerter Verschiebung, und relativ zum oberen Stempel (6) nach unten verschiebbar ist, wenn das Gleitstück (3) seine obere inaktive Stellung einnimmt, um den Grat (1a) des oberen Stempels (6) auszustoßen und in einen Recyclingbehälter (2b) zu befördern.
  8. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Gleitstück (3) senkrecht beweglich auf zwei Führungssäulen (5) befestigt ist, die mit der Grundplatte (4) verbunden sind.
  9. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass ein Roboter (2) vorgesehen ist, um mit seinen Greiferarmen (2a) das Schmiedestück (1) mit Grat (1a) auf dem unteren Stempel (13) abzulegen und später das entgratete Schmiedestück (1) von diesem Stempel herunterzunehmen.
  10. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Anschläge (23) elektrisch oder hydraulisch sind und fernbedient werden, zum Beispiel von einem Steuerpult der Presse aus.
  11. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Presse eine hydraulische Presse ist.
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 EP1459822A1 (de) 2004-09-22
EP1459822B1 true EP1459822B1 (de) 2007-05-09

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EP04290688A Expired - Lifetime EP1459822B1 (de) 2003-03-17 2004-03-12 Vorrichtung zum Entgraten von Schmiedstücken

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

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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
GB201318236D0 (en) * 2013-10-15 2013-11-27 Rolls Royce Plc Clipping tool
CN105312400B (zh) * 2014-07-31 2017-06-13 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
CN108044009B (zh) * 2017-12-07 2019-05-31 安徽吉思特智能装备有限公司 一种热锻用冲压装置
DE102019203948A1 (de) 2019-03-22 2020-09-24 Zf Friedrichshafen Ag Vorrichtung und Verfahren zum Entgraten mindestens einer Bohröffnung eines metallischen Werkstücks
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
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

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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

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Also Published As

Publication number Publication date
ES2285374T3 (es) 2007-11-16
EP1459822A1 (de) 2004-09-22
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

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