EP0764486A2 - Process for preparing a mould for casting a disk like article - Google Patents

Process for preparing a mould for casting a disk like article Download PDF

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Publication number
EP0764486A2
EP0764486A2 EP96113208A EP96113208A EP0764486A2 EP 0764486 A2 EP0764486 A2 EP 0764486A2 EP 96113208 A EP96113208 A EP 96113208A EP 96113208 A EP96113208 A EP 96113208A EP 0764486 A2 EP0764486 A2 EP 0764486A2
Authority
EP
European Patent Office
Prior art keywords
mould
mold
cast
disc
halves
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
EP96113208A
Other languages
German (de)
French (fr)
Other versions
EP0764486B1 (en
EP0764486A3 (en
Inventor
Klaus Seekatz
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.)
Fritz Winter Eisengiesserei GmbH and Co KG
Original Assignee
Fritz Winter Eisengiesserei GmbH and Co KG
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 Fritz Winter Eisengiesserei GmbH and Co KG filed Critical Fritz Winter Eisengiesserei GmbH and Co KG
Publication of EP0764486A2 publication Critical patent/EP0764486A2/en
Publication of EP0764486A3 publication Critical patent/EP0764486A3/en
Application granted granted Critical
Publication of EP0764486B1 publication Critical patent/EP0764486B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/22—Moulds for peculiarly-shaped castings
    • B22C9/28—Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings

Definitions

  • the invention relates to a method for preparing a center-split mold for the casting of a disc shaped body, in particular a brake disc, in which the mold cavity is formed into the two mold halves from the parting plane of the mold. After inserting the model, the mold halves are filled with molding sand. The model of the shaped disk body is molded about half in each of the two mold halves. The model is then removed and the mold halves are assembled to form the mold cavity.
  • disk shaped bodies When casting disk-shaped bodies, hereinafter referred to as "disk shaped bodies", it was previously customary to insert the model of the disk shaped body into the molding box in such a way that the large disk area lies parallel to the parting plane of the mold.
  • the invention is based on the object of reducing the production costs of cast disc shaped bodies.
  • the advantages of executing the method according to the invention are, on the one hand, that double the amount of cast body can be poured off on an equally large footprint. Furthermore, the casting time can be shortened considerably because the two or more cast bodies in a mold can be produced almost simultaneously.
  • Another advantage of the method according to the invention is that one can dispense with a core, namely the outer core, because of the different position of the model when molding the mold cavity in the mold, which was previously necessary for the undercut sections of the shaped pane body. Such sections have now been omitted.
  • the molding box 1 consists of the mold halves 1a and 1b. It is divided in the middle in the division plane X-X.
  • the model of the disk molded body to be produced is molded after the molding sand 5 has been introduced into the mold box halves to form a corresponding casting cavity recess.
  • the cavities that are to be formed in the cast body are closed by cores inserted into the molding box 1.
  • the mold cavity is formed. This is filled with molten metal, in particular cast iron, to produce the shaped pane body 4.
  • the shaped disc body 4 is cast with the disc 4a lying parallel to the division plane X-X.
  • two cast bodies with a disc 4a extending perpendicular to the parting plane X-X of the mold 1 are cast.

Abstract

The mould cast (1) comprises two halves (1a,1b) and is divided in a division plane (X-X). In each of the two mould box halves, the pattern of the disc mould body to be produced is moulded after the introduction of mould sand (5) in the mould box halves with the formation of a corresponding cast hollow space cavity. The hollow spaces, formed in the cast body, are closed by cores set in the mould box. In the mould box (1) are an outer core and an inner core (3). After bringing the mould halves together, the hollow space of the mould is formed and is filled with metal smelt, esp. cast iron, for prodn. of the disc mould body (4). The pattern is moulded only with an inner core.

Description

Die Erfindung betrifft ein Verfahren zur Vorbereitung einer mittengeteilten Form für den Abguß eines Scheibenformkörpers, insbesondere einer Bremsscheibe, bei dem der Formhohlraum von der Teilungsebene der Form aus in beide Formhälften hinein ausgeformt wird. Nach dem Einsetzen des Modells werden die Formhälften mit Formsand gefüllt. Das Modell des Scheibenformkörpers ist dabei etwa je zur Hälfte in jeder der beiden Formhälften abgeformt. Danach wird das Modell entfernt, und die Formhälften werden unter Bildung des Formhohlraums zusammengesetzt.The invention relates to a method for preparing a center-split mold for the casting of a disc shaped body, in particular a brake disc, in which the mold cavity is formed into the two mold halves from the parting plane of the mold. After inserting the model, the mold halves are filled with molding sand. The model of the shaped disk body is molded about half in each of the two mold halves. The model is then removed and the mold halves are assembled to form the mold cavity.

Beim Abguß von scheibenförmigen Körpern, nachfolgend "Scheibenformkörper" genannt, war es bisher üblich, das Modell des Scheibenformkörpers so in den Formkasten einzusetzen, daß die Scheibengroßfläche parallel zur Teilungsebene der Form liegt.When casting disk-shaped bodies, hereinafter referred to as "disk shaped bodies", it was previously customary to insert the model of the disk shaped body into the molding box in such a way that the large disk area lies parallel to the parting plane of the mold.

Der Erfindung liegt nun die Aufgabe zugrunde, die Produktionskosten von gegossenen Scheibenformkörpern zu senken.The invention is based on the object of reducing the production costs of cast disc shaped bodies.

Dies gelingt, wenn bei dem gattungsgemäßen Verfahren erfindungsgemäß zur Ausbildung des Formhohlraums das Modell des Scheibenformkörpers mit in einer zur Teilungsebene der Form senkrechten Ebene stehenden Scheibenflächen abgeformt wird.This is achieved if, in the method of the generic type, according to the invention for forming the mold cavity, the model of the shaped disc body is molded with disc surfaces standing in a plane perpendicular to the parting plane of the mold.

Die Vorteile bei Ausführung des erfindungsgemäßen Verfahrens bestehen zum einen darin, daß man auf einer gleich großen Stellfläche die doppelte Menge Gußkörper abgießen kann. Ferner kann die Abgußzeit erheblich verkürzt werden, weil die in einer Form befindlichen zwei oder mehr Gußkörper nahezu gleichzeitig erzeugt werden können. Ein weiterer Vorteil des erfindungsgemäßen Verfahrens ist, daß man auf einen Kern, nämlich den Außenkern, wegen der anderen Lage des Modells beim Abformen des Formhohlraums in der Form verzichten kann, der bislang für die hinterschnittenen Abschnitte des Scheibenformkörpers notwendig war. Solche Abschnitte sind nun entfallen.The advantages of executing the method according to the invention are, on the one hand, that double the amount of cast body can be poured off on an equally large footprint. Furthermore, the casting time can be shortened considerably because the two or more cast bodies in a mold can be produced almost simultaneously. Another advantage of the method according to the invention is that one can dispense with a core, namely the outer core, because of the different position of the model when molding the mold cavity in the mold, which was previously necessary for the undercut sections of the shaped pane body. Such sections have now been omitted.

Diese Vorteile summieren sich zu einer erheblichen Verminderung der Produktionskosten, ohne daß hierzu ein besonderer Aufwand erforderlich ist. Die Vorteile lassen sich vielmehr mit den gleichen Mitteln erreichen, die man bisher schon beim Formgießen verwendet hat.These advantages add up to a considerable reduction in production costs without requiring any special effort. Rather, the advantages can be achieved with the same means that have previously been used in molding.

Anhand der Zeichnung wird die Erfindung näher erläutert.

Fig. 1
zeigt den Längsschnitt durch einen Formkasten mit darin abgegossenem Scheibenkörper nach herkömmlicher Erzeugung
Fig. 2
die zugehörige Draufsicht des Formkastens,
Fig. 3
einen Formkasten für den Abguß von zwei Scheibenkörpern nach dem erfindungsgemäßen Verfahren im Längsschnitt und
Fig. 4
in Draufsicht.
The invention is explained in more detail with reference to the drawing.
Fig. 1
shows the longitudinal section through a molding box with cast-in disc body according to conventional production
Fig. 2
the associated top view of the molding box,
Fig. 3
a molding box for the casting of two disc bodies according to the inventive method in longitudinal section and
Fig. 4
in top view.

Gleiche Teile sind in den verschiedenen Abbildungen mit denselben Bezugszeichen versehen.Identical parts are provided with the same reference symbols in the different figures.

Der Formkasten 1 besteht aus den Formhälften 1a und 1b. Er ist jeweils in der Teilungsebene X-X mittengeteilt. In jeder der beiden Formkastenhälften 1a und 1b ist das Modell des zu erzeugenden Scheibenformkörpers nach dem Einbringen des Formsandes 5 in die Formkastenhälften unter Bildung einer entsprechenden Gießhohlraumvertiefung abgeformt. Die Hohlräume, die im Gußkörper gebildet werden sollen, sind durch in den Formkasten 1 eingesetzte Kerne geschlossen. Bei der herkömmlichen Gießweise befindet sich im Formkasten 1 ein Außenkern 2 und ein Innenkern 3. Nach dem Zusammensetzen der Formhälften 1a, 1b wird der Formhohlraum gebildet. Dieser wird zur Erzeugung des Scheibenformkörpers 4 mit Metallschmelze, insbesondere Gußeisen, ausgefüllt.The molding box 1 consists of the mold halves 1a and 1b. It is divided in the middle in the division plane X-X. In each of the two mold box halves 1a and 1b, the model of the disk molded body to be produced is molded after the molding sand 5 has been introduced into the mold box halves to form a corresponding casting cavity recess. The cavities that are to be formed in the cast body are closed by cores inserted into the molding box 1. In the conventional casting method, there is an outer core 2 and an inner core 3 in the mold box 1. After the mold halves 1a, 1b have been assembled, the mold cavity is formed. This is filled with molten metal, in particular cast iron, to produce the shaped pane body 4.

Bei der bisherigen Ausführung gemäß Fig. 1 und 2 wird der Scheibenformkörper 4 mit parallel zur Teilungsebene X-X liegender Scheibe 4a abgegossen. In dem Formkasten 1 nach Fig. 3 und 4 sind dagegen zwei Gußkörper mit senkrecht zur Teilungsebene X-X der Form 1 sich erstreckender Scheibe 4a abgegossen.In the previous embodiment according to FIGS. 1 and 2, the shaped disc body 4 is cast with the disc 4a lying parallel to the division plane X-X. In contrast, in the molding box 1 according to FIGS. 3 and 4, two cast bodies with a disc 4a extending perpendicular to the parting plane X-X of the mold 1 are cast.

Für den Abguß benötigt man jeweils nur einen Innenkern 3. Beim Abguß nach dem in Fig. 1 und 2 dargestellten bekannten Muster war demgegenüber wie gesagt noch ein zusätzlicher Außenkern 2 erforderlich. Dieser kann nach dem neuen Verfahren entfallen, weil keine Hinterschneidungen auftreten, die durch einen Außenkern abgedeckt sein müssen.Only one inner core 3 is required for the casting. In contrast, as mentioned, an additional outer core 2 was required for the casting according to the known pattern shown in FIGS. 1 and 2. This can be omitted according to the new method because there are no undercuts that have to be covered by an outer core.

Claims (2)

Verfahren zur Vorbereitung einer mittengeteilten Form für den Abguß eines Scheibenformkörpers, insbesondere einer Bremsscheibe, bei dem der Formhohlraum von der Teilungsebene der Form aus in beide Formhälften hinein ausgeformt wird,
dadurch gekennzeichnet, daß zur Ausbildung des Formhohlraums das Modell des Scheibenformkörpers mit in einer zur Teilungsebene der Form senkrechten Ebene stehenden Scheibenflächen abgeformt wird.Method for preparing a middle-part mold for the casting of a disc shaped body, in particular a brake disc, in which the mold cavity is formed into both mold halves from the parting plane of the mold,
characterized in that, in order to form the mold cavity, the model of the shaped disc body is molded with disc surfaces standing in a plane perpendicular to the parting plane of the mold. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß das Modell, nur mit einem Innenkern versehen, abgeformt wird.Method according to claim 1,
characterized in that the model, provided only with an inner core, is molded.
EP19960113208 1995-09-23 1996-08-16 Process for producing a casting mould for plural brake disks Expired - Lifetime EP0764486B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995135457 DE19535457C1 (en) 1995-09-23 1995-09-23 Preparing mould for casting disc-shaped body, partic. brake disc
DE19535457 1995-09-23

Publications (3)

Publication Number Publication Date
EP0764486A2 true EP0764486A2 (en) 1997-03-26
EP0764486A3 EP0764486A3 (en) 1998-11-25
EP0764486B1 EP0764486B1 (en) 2001-05-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960113208 Expired - Lifetime EP0764486B1 (en) 1995-09-23 1996-08-16 Process for producing a casting mould for plural brake disks

Country Status (3)

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EP (1) EP0764486B1 (en)
DE (1) DE19535457C1 (en)
ES (1) ES2158976T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103567391A (en) * 2013-09-28 2014-02-12 富士和机械工业（湖北）有限公司 Novel casting mould structure for car brake disc
GB2566527A (en) * 2017-09-18 2019-03-20 Nissan Motor Iberica Sa Improvements relating to brake disc casting processes and apparatus
GB2566529A (en) * 2017-09-18 2019-03-20 Nissan Motor Iberica Sa Improvements relating to brake disc casting manufacturing

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102151793A (en) * 2011-01-10 2011-08-17 青岛纺织机械股份有限公司 Manufacturing process of integrated cylinder
CN104942235A (en) * 2014-03-24 2015-09-30 韩金福 Box stacking and pouring technical method for automobile brake disc
CN104384444A (en) * 2014-11-27 2015-03-04 宁夏共享装备有限公司 Sand mold structure of oil pan casting
CN106363129A (en) * 2016-08-31 2017-02-01 共享铸钢有限公司 Casting technique of supporting frame for building

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1404682A (en) * 1917-10-18 1922-01-24 Mary Emma Barker Process of making piston rings
DE3636120A1 (en) * 1985-10-23 1987-04-23 Hitachi Metals Ltd Integrated rotor hub and a method for its production
US5251682A (en) * 1992-04-27 1993-10-12 Emerson Electric Co. Cast disk and method of manufacturing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1404682A (en) * 1917-10-18 1922-01-24 Mary Emma Barker Process of making piston rings
DE3636120A1 (en) * 1985-10-23 1987-04-23 Hitachi Metals Ltd Integrated rotor hub and a method for its production
US5251682A (en) * 1992-04-27 1993-10-12 Emerson Electric Co. Cast disk and method of manufacturing the same

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Composite pinion and ring gear casting" RESEARCH DISCLOSURE., Nr. 280, August 1987, Seite 482 XP002079056 New York USA *
J.W.NIERMANS: "Metalen en Metaalbewerking - Deel III - De Gieterij" 1951 , NIJGH & VAN DITMAR N.V. , ROTTERDAM XP002079057 * Seite 52 - Seite 55; Abbildung 70 * *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103567391A (en) * 2013-09-28 2014-02-12 富士和机械工业（湖北）有限公司 Novel casting mould structure for car brake disc
CN103567391B (en) * 2013-09-28 2017-08-01 富士和机械工业（湖北）有限公司 The novel casting model structure of automobile brake disc
GB2566527A (en) * 2017-09-18 2019-03-20 Nissan Motor Iberica Sa Improvements relating to brake disc casting processes and apparatus
GB2566529A (en) * 2017-09-18 2019-03-20 Nissan Motor Iberica Sa Improvements relating to brake disc casting manufacturing

Also Published As

Publication number Publication date
EP0764486B1 (en) 2001-05-23
ES2158976T3 (en) 2001-09-16
DE19535457C1 (en) 1996-08-08
EP0764486A3 (en) 1998-11-25

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