AT140880B - Device for the manufacture of cast pistons, in particular for engines of motor vehicles. - Google Patents

Device for the manufacture of cast pistons, in particular for engines of motor vehicles.

Info

Publication number
AT140880B
AT140880B AT140880DA AT140880B AT 140880 B AT140880 B AT 140880B AT 140880D A AT140880D A AT 140880DA AT 140880 B AT140880 B AT 140880B
Authority
AT
Austria
Prior art keywords
hollow body
casting
cast
piston
mold core
Prior art date
Application number
Other languages
German (de)
Inventor
Michael Gayer
Original Assignee
Michael Gayer
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 Michael Gayer filed Critical Michael Gayer
Application granted granted Critical
Publication of AT140880B publication Critical patent/AT140880B/en

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  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 



   Es ist bereits bekannt, bei der Herstellung von   Gusskolben,   insbesondere für Brennkraftmaschinen, als Zapfenlager dienende Höhlungen in der Weise auszusparen, dass Lagerbüchsen aus einem Material, das sich mit dem beim Kolbenguss verwendeten, erstarrenden Material verbindet, mit Hilfe von ihre Bohrung ausfüllenden zapfenartigen Kernteilen in der richtigen gegenseitigen Stellung an den Formkern angeheftet und miteingegossen werden. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 
 EMI1.1
 



   It is already known in the production of cast pistons, especially for internal combustion engines, to cut out cavities serving as journal bearings in such a way that bearing bushes made of a material that combines with the solidifying material used in piston casting, with the aid of journal-like core parts filling their bore are attached to the mandrel in the correct mutual position and cast in.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

Den Gegenstand der Erfindung bildet eine Vorrichtung, mittels welcher unter Anwendung dieses bekannten Verfahrens Gusskolben mit den ebenfalls an sich bekannten, zur Kühlung dienenden Hohlräumen, dadurch versehen werden, dass ein mit dem zu erzeugenden Hohlraum identischer Hohlkörper miteingegossen werden kann. ohne zu seiner Festlegung in der Gussform andere Formteile als den Formkern in Anspruch zu nehmen. Der Erfindung gemäss ist das freie, dem Kolbenboden zugewendete Ende des Formkernes als den Hohlkörper zentrisch festhaltender Träger ausgebildet und auch mit einem Kanal zum Abführen der beim Guss im Hohlkörper expandierenden Luft versehen. The subject matter of the invention is a device by means of which, using this known method, casting pistons are provided with the cavities which are also known per se for cooling, in that a hollow body identical to the cavity to be produced can be cast in at the same time. without using mold parts other than the mold core to fix it in the mold. According to the invention, the free end of the mold core facing the piston head is designed as a support that holds the hollow body centrally and is also provided with a channel for discharging the air expanding in the hollow body during casting. In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes im Schnitt veranschaulicht. An exemplary embodiment of the subject matter of the invention is illustrated in section in the drawing. Die Form besteht aus der Wandung a und dem Deckel b, welche dem Mantel und der Stirn des zu giessenden Kolbens c entsprechen und aus dem nach allgemeinen Gesichtspunkten mehrteiligen Kern 11. der zugleich einen Träger e für den Hohlkörper f bildet und die zentrische Lage des Hohlkörpers in bezug auf die Kolbenachse sichert. Der Hohlkörper f ist beim gewählten Beispiele mit einer zentralen Öffnung g zum Entweichen der beim Guss in seinem Holuraum expandierenden Luft versehen, wogegen in dem EMI1.2 der Kühlflüssigkeit bemessen und ausgebildet sein. The shape consists of the wall a and the cover b, which correspond to the jacket and the face of the piston c to be cast, and the core 11, which is multipart according to general aspects, which at the same time forms a carrier e for the hollow body f and the central position of the hollow body secures with respect to the piston axis. In the selected example, the hollow body f is provided with a central opening g for the escape of the air expanding in its hollow space during casting, whereas in the one EMI1.2 the cooling liquid be sized and designed. PATENT-ANSPRÜCHE : 1. Vorrichtung zur Herstellung von Gusskolben, insbesondere für Motoren von Kraftfahrzeugen, deren zur Kühlung dienender Hohlraum durch Miteingiessen eines Hohlkörpers erzeugt ist, dadurch gekennzeichnet, dass das Ende des für den Kolbenguss erforderlichen Formkerns als den Hohlkörper zentrisch festhaltender Träger ausgebildet ist. PATENT CLAIMS: 1. A device for the production of cast pistons, in particular for engines of motor vehicles, the cavity of which is used for cooling is produced by co-casting a hollow body, characterized in that the end of the mold core required for the piston casting is designed as a carrier holding the hollow body centrally. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Hohlkörper mit einer Öffnung zum Abführen der beim Gusse expandierenden Luft versehen und die Öffnung an einen im Formkern angeordneten, nach aussen mündenden Kanal angeschlossen ist. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. Apparatus according to claim 1, characterized in that the hollow body is provided with an opening for discharging the air expanding during casting and the opening is connected to a channel opening outwards and arranged in the mold core. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT140880D 1933-12-01 1933-12-01 Device for the manufacture of cast pistons, in particular for engines of motor vehicles. AT140880B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT140880T 1933-12-01

Publications (1)

Publication Number Publication Date
AT140880B true AT140880B (en) 1935-03-11

Family

ID=3641371

Family Applications (1)

Application Number Title Priority Date Filing Date
AT140880D AT140880B (en) 1933-12-01 1933-12-01 Device for the manufacture of cast pistons, in particular for engines of motor vehicles.

Country Status (1)

Country Link
AT (1) AT140880B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149504B (en) * 1957-08-13 1963-05-30 Schmidt Gmbh Karl Process for the manufacture of cast pistons

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149504B (en) * 1957-08-13 1963-05-30 Schmidt Gmbh Karl Process for the manufacture of cast pistons

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