DE2342390B2 - Application of a method for milling aluminum rolling ingots for the machining of thin-walled aluminum castings - Google Patents

Application of a method for milling aluminum rolling ingots for the machining of thin-walled aluminum castings

Info

Publication number
DE2342390B2
DE2342390B2 DE2342390A DE2342390A DE2342390B2 DE 2342390 B2 DE2342390 B2 DE 2342390B2 DE 2342390 A DE2342390 A DE 2342390A DE 2342390 A DE2342390 A DE 2342390A DE 2342390 B2 DE2342390 B2 DE 2342390B2
Authority
DE
Germany
Prior art keywords
cast
milling
aluminum
thickness
machining
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
DE2342390A
Other languages
German (de)
Other versions
DE2342390A1 (en
DE2342390C3 (en
Inventor
Werner Dr.-Ing. 5800 Hagen Helling
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE2342390A priority Critical patent/DE2342390C3/en
Publication of DE2342390A1 publication Critical patent/DE2342390A1/en
Publication of DE2342390B2 publication Critical patent/DE2342390B2/en
Application granted granted Critical
Publication of DE2342390C3 publication Critical patent/DE2342390C3/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002Castings of light metals
    • B22D21/007Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042Devices for removing chips
    • B23Q11/0046Devices for removing chips by sucking

Claims (1)

Patentanspruch:Claim: Anwendung eines Verfahrens zum Abfräsen von Aluminium-Walzbarren, wobei die Frässpäne unmittelbar an den Schnittwerkzeugen über dort angebrachte Kanäle abgesaugt werden, auf die Bearbeitung dünnwandiger Aluminium-Formgußkörper, insbesondere plattenförmiger Verkleidungselemente, mit der Massgabe, daß die Gußteile durch Vakuum-Anpreßorgane von unten gehalten werden und die Gußwände auf die Dicke von Aluminium-Verkleidungsblechen und Profilen, mindestens aber um fünfzig Prozent der Gußdicke, abqespannt werden.Use of a method for milling aluminum rolling ingots, with the milling chips immediately be sucked off on the cutting tools via channels attached there, on the machining thin-walled cast aluminum body, in particular panel-shaped cladding elements, with the proviso that the cast parts are held from below by vacuum pressure elements and the cast walls to the thickness of aluminum cladding sheets and profiles, but at least by fifty percent of the casting thickness. Die zur Formfüllung notwendige Dicke von Aluminium-Formgußkörpern hängt im wesentlichen von der Größe und Form der Stücke sowie von der Legierung und den Gießbedingungen ab. Beim Sandguß von Verkleidungsplatten für Gebäude und anderen Teilen aus Aluminium-Gußlegierungen liegt diese Mindest-Gußdicke beispielsweise bei etwa 6 bis 8 mm und darüber. Dadurch werden die Teile für manche Anwendungen zu schwer; außerdem lassen sie sich kaum biegen. The thickness of cast aluminum bodies necessary for filling the mold depends essentially on the size and shape of the pieces as well as on the alloy and the casting conditions. When sand casting cladding panels for buildings and other parts made of aluminum casting alloys, this minimum casting thickness is, for example, about 6 to 8 mm and more. This makes the parts too heavy for some applications; in addition, they can hardly be bent. Man verwendet daher und aus preislichen Gründen in der Bauwirtschaft und beim Fahrzeugbau vorwiegend anodisch-oxidierte Bleche und Profile aus geeigneten Aluminium-Knetlegierungen mit Dicken von etwa 1—2,5 mm. Eine Verringerung der Wandstärke der Gußkörper durch spanabhebende Bearbeitung auf die Dicke von Blechen und Profilen bereitet erhebliche technische Schwierigkeiten, weil bei der Abspanung von etwa 3A des Gußgewichtes große Mengen von Spänen anfallen, die ohne jede Verletzung der Oberfläche aus der Fräseinrichtung entfernt werden müßen.For this reason and for reasons of price, anodic-oxidized sheet metal and profiles made of suitable wrought aluminum alloys with a thickness of about 1–2.5 mm are predominantly used in the construction industry and in vehicle construction. A reduction in the wall thickness of the cast body by machining to the thickness of sheet metal and profiles causes considerable technical difficulties, because when removing around 3 A of the cast weight, large amounts of chips are produced that have to be removed from the milling device without damaging the surface. Gemäß der Erfindung soll zum Abspanen der Gußteile um mehr als 50% der Gußdicke ein für das Abfräsen von Aluminium-Walzbarren entwickeltes Verfahren angewendet werden, bei dem die Fräs-Späne unmittelbar an den einzelnen Schnittwerkzeugen über dort angebrachte Kanäle und über die hohl ausgebildeteAccording to the invention, for the machining of the cast parts by more than 50% of the cast thickness a for the Milling of aluminum rolling ingots developed method are used in which the milling chips directly to the individual cutting tools via channels attached there and via the hollow ones ίο Drehachse abgesaugt und aus der Fräseinrichtung entfernt werden.ίο Rotary axis extracted and out of the milling device removed. Mit diesem Verfahren bearbeitete Aluminium-Walzbarren, bei denen zur Entfernung von Seigerungszonen und zur Verbesserung der Oberfläche etwa 10% derAluminum rolling ingots processed with this process for the removal of segregation zones and to improve the surface about 10% of the «5 Dicke abgespant werden, werden meist gleichzeitig auf beiden Breitseiten bearbeitet und seitlich eingespannt.«5 thicknesses are machined mostly at the same time machined on both broad sides and clamped at the side. Platten und andere dünnwandige Gußkörper dagegen müßen beim Fräsen von unten mittels Vakuum-Anpreßorganen gehalten werden, wobei die Anordnung einer Lochplatte zwischen Gußwand und Vakuumorgan zweckmäßig sein kann. Die Anwendung dieser Anpreßart und der Lochplatte ist an sich für andere Zwecke und mit anderer Abspanungstechnik bekannt.
Mit der empfohlenen Arbeitsweise können beispielsweise 6 mm dicke Gußplatten auf eine Endstärke von 1,5 mm abgefräst werden, wobei sich das Gewicht je Meterquadrat um etwa 12 kg verringert. Außerdem werden einfache Biegungen ermöglicht. Dadurch wird die Verwendung solcher Teile für die Bauwirtschaft und vor allem für den Fahrzeugbau interessant und vielfach überhaupt erst möglich.
Plates and other thin-walled cast bodies, on the other hand, have to be held from below during milling by means of vacuum pressure elements, it being possible to arrange a perforated plate between the cast wall and the vacuum element. The use of this type of pressure and the perforated plate is known per se for other purposes and with other machining technology.
With the recommended working method, for example, 6 mm thick cast plates can be milled to a final thickness of 1.5 mm, whereby the weight per square meter is reduced by about 12 kg. In addition, simple bends are made possible. This makes the use of such parts for the construction industry and especially for vehicle construction interesting and often possible in the first place.
Die Abfräsung von dünnwandigen Aluminium-Formgußkörpern um mehr als 50% der Gußdicke mit Absaugung der Späne an den einzelnen Schnittwerkzeugen unter Verwendung von Teller- oder Walzenfräsern ist grundsätzlich für alle solche Gußteile mit Nutzen anwendbar, bei denen die großen Gußdicken nicht aus Gründen der Festigkeit notwendig sind.Milling thin-walled cast aluminum bodies by more than 50% of the cast thickness Extraction of the chips from the individual cutting tools using disc or cylindrical milling cutters is basically applicable to all those cast parts with benefits where the large cast thicknesses are not necessary for reasons of strength.
DE2342390A 1973-08-20 1973-08-20 Application of a method for milling aluminum rolling ingots on the machining of thin-walled aluminum castings Expired DE2342390C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2342390A DE2342390C3 (en) 1973-08-20 1973-08-20 Application of a method for milling aluminum rolling ingots on the machining of thin-walled aluminum castings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2342390A DE2342390C3 (en) 1973-08-20 1973-08-20 Application of a method for milling aluminum rolling ingots on the machining of thin-walled aluminum castings

Publications (3)

Publication Number Publication Date
DE2342390A1 DE2342390A1 (en) 1975-03-06
DE2342390B2 true DE2342390B2 (en) 1978-04-06
DE2342390C3 DE2342390C3 (en) 1978-11-23

Family

ID=5890420

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2342390A Expired DE2342390C3 (en) 1973-08-20 1973-08-20 Application of a method for milling aluminum rolling ingots on the machining of thin-walled aluminum castings

Country Status (1)

Country Link
DE (1) DE2342390C3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014217157A1 (en) * 2014-08-28 2016-03-03 Sms Group Gmbh Milling plant for aluminum ingots

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014217157A1 (en) * 2014-08-28 2016-03-03 Sms Group Gmbh Milling plant for aluminum ingots

Also Published As

Publication number Publication date
DE2342390A1 (en) 1975-03-06
DE2342390C3 (en) 1978-11-23

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
8339 Ceased/non-payment of the annual fee