EP0608518B1 - Device for deburring of moulds and cores - Google Patents

Device for deburring of moulds and cores Download PDF

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Publication number
EP0608518B1
EP0608518B1 EP19930119491 EP93119491A EP0608518B1 EP 0608518 B1 EP0608518 B1 EP 0608518B1 EP 19930119491 EP19930119491 EP 19930119491 EP 93119491 A EP93119491 A EP 93119491A EP 0608518 B1 EP0608518 B1 EP 0608518B1
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EP
European Patent Office
Prior art keywords
deburring
holding member
displacement
holding
ring
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
EP19930119491
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German (de)
French (fr)
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EP0608518A2 (en
EP0608518A3 (en
Inventor
Werner Landua
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.)
Hottinger Maschinenbau GmbH
Original Assignee
Adolf Hottinger Maschinenbau GmbH
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Publication date
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Publication of EP0608518A2 publication Critical patent/EP0608518A2/en
Publication of EP0608518A3 publication Critical patent/EP0608518A3/en
Application granted granted Critical
Publication of EP0608518B1 publication Critical patent/EP0608518B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/18—Finishing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/384—By tool inside hollow work
    • Y10T83/386—With expanding mandrel

Definitions

  • the invention relates to a device for deburring molds or cores, especially in narrow spaces between such molds (see: DE-C-4002555).
  • sand molds or cores such as water jacket cores, sole cores or combinations of the like, which are provided for casting metallic parts, such as engine blocks or the like.
  • the invention is therefore based on the object of providing a device with which automatic deburring can be carried out in narrow, deep spaces between core or molded parts.
  • the stated object is achieved in a device of the type mentioned at the outset by the characterizing features of claim 1.
  • the deburring element is a ring provided with a separation point, the separation point in particular being inclined to the axis, preferably at 45 °.
  • An embodiment for more complex parts to be deburred provides that deburring elements are mounted so as to be axially displaceable as deburring elements in such a way that they move back in one direction when displaced and move forward when displaced in the opposite direction, the deburring elements having a deburring section which is underneath extends a finite angle to the direction of displacement from the holding body.
  • the holding body can have a wide variety of shapes. In a preferred embodiment, it is cylindrical in the form of a cylinder, ie it has the cross section of a circle; it can also have a quadrangular or polygonal cross-section or a cross-section of any contour. As a rule, however, the cross section is about the height of the holding body remain essentially the same.
  • the holding body with its deburring bodies, which are preferably arranged in its lower region and are at least radially, possibly also axially movable, with deburring sections oriented perpendicular to the direction of displacement, can be immersed in the spaces between the workpiece to be machined until the deburring sections of the deburring lamellae engage under the burrs.
  • the device according to the invention can also be designed such that deburring sections protrude inwards, i.e. against one another, for example in the case of a cylindrical casing-shaped holding body radially inwards.
  • the radial extent of the deburring sections need not be the same over the entire circumference of the holding body, but can be different, for example flattened or shortened in particularly narrow areas.
  • a further preferred embodiment of the device according to the invention is characterized in that the deburring lamellae are movably mounted in a space between the holding body and a retaining ring surrounding it with play in the direction of displacement and perpendicularly thereto.
  • deburring lamellae are designed as an angular part with a guide leg extending in the direction of displacement, which ensures reliable guiding of the deburring lamellae.
  • the deburring lamellae sit on an inclined surface, the entire arrangement in particular having an essentially circular cross section.
  • deburring sections of the deburring elements extend radially to different extents or have different lengths in different circumferential regions, that is to say if necessary the deburring sections of the individual deburring lamellae extend to different extents perpendicular to the displacement direction or have different lengths.
  • a plurality of holding bodies with at least radially resiliently mounted deburring lamellae are arranged and in particular that a plurality of holding bodies with deburring lamellae axially displaceable in them and movable inwards and outwards are arranged on a mounting plate with deburring sections extending perpendicular to the direction of displacement are.
  • the device according to the invention for deburring molds or cores initially has a holding body 1 which, in the preferred embodiment shown, basically has the shape of a cylinder jacket.
  • the holding body 1 can also have different types of contours, such as rectangular, polygonal contours or any cross-sectional shape. It is only essential that the cross-sectional shape is essentially the same over its height.
  • annular recess 2 is formed in its lower region, which is covered from the top to the outside, ie over its circumference by a retaining ring 3.
  • an expansion ring 4 is directly on the retaining body 1.
  • the upper region 6 of the expansion ring 4 is chamfered, for example at an angle from 30 ° to the longitudinal axis A of the holding body 1, and has a finite distance from the lower edge 7 of the holding ring 3.
  • a plurality of deburring lamellae 9 are arranged around the circumference of the holding body 1.
  • these are designed as angular parts and have a guide leg 11 which is aligned parallel to the axis A and projects into the recess 2.
  • a deburring section 12 is formed at an angle, which projects outwards, here radially outwards, in the space between the lower edge 7 of the retaining ring 3 and the bevel 6 of the expansion ring 4.
  • the width of the guide leg 11 is less than the width of the recess 2 between the retaining ring 3 and the area 8 of the holding body 1.
  • the deburring lamella 9 with the free end 13 of the deburring section 12 is pressed upwards by a burr on a workpiece to be machined (when moving downward) of the device according to the invention with the holding body 1 in the direction B), the deburring lamella slides along the bevel 6 on the one hand against the direction of movement B of the holding body 1 upwards, but on the other hand moves perpendicular to the direction of movement B in the direction C inwards, that is to say radially inwards .
  • the holding body 1 is again moved linearly upward against the direction of movement B (the back-and-forth movement extends, for example, over 10 mm)
  • the deburring section 12 comes to rest on a ridge with its outer upper edge, from which it comes down and at the same time pulled outward in the opposite direction C (radially) until the deburring lamella comes into contact with the retaining ring 3 with its guide leg 11. If the holding body 1 is then moved upward, the deburring lamella grazes 9 with the outer upper edge of its deburring section 12 from the burr of the shape or core to be machined.
  • the extent of the deburring section 12 can also be selected differently, for example in the case of a holding body 1 with a fundamentally cylindrical cross section, in adaptation to the workpieces to be machined, such as shapes or cores, as is the case in FIG. 2, where in very narrow areas between parts of such a workpiece , for example cylindrical parts of a sole core and between these projecting regions of a water jacket core (FIG. 3) is to be deburred.
  • the deburring sections in area 16 of FIG. 2 are shortened compared to those in area 17.
  • FIG. 1 shows a device for deburring according to the invention for the water jacket and sole core for an internal combustion engine.
  • FIG. 3 shows one Deburring device according to the invention for the water jacket and sole core for an internal combustion engine.
  • a plurality of holding bodies 1 in the configuration described with reference to FIG. 1 are fastened to a mounting plate 21, only one of which is shown in part in longitudinal section (left side) and in part in the external view with parts broken away.
  • a spring 22 elastically biased spring bolts 23 which are in the direction of the axis A and thus in the direction of movement B extend the device.
  • the spring bolts 23 come to rest in a region 23a of the water jacket core 24 and prevent the latter from detaching from the sole core 25.
  • a water jacket-sole-core combination is processed, which is shown in the lower part of FIG.
  • a workpiece consists of the aforementioned water jacket core 24 and the sole core 25, on which cylindrical sections 26 are formed in one piece.
  • the water jacket core 24 is seated on a lower part 27 of the sole core 25 and is held in this against displacement by pins 29 projecting into recesses 28.
  • burrs 32 of the water jacket core are formed between the cylinder parts 26, which protrude only over a small height above the plate 27.
  • burrs 33 remain in the upper region of the ribs 32;
  • burrs 34 remain at the same height on the inside of the outer wall 31. Burrs of this type are to be deburred by the device according to the invention, the space between the ribs 32 and the outer wall 31 and the cylinder sections 36 being only a few mm, for example 8 to 10 mm, the distance between the ridges 33, 34 to the upper edge of the water jacket core 24 can be several cm, for example about 10 cm.
  • the device according to the invention moves with its holding bodies 1 into the intermediate space 36 between the water jacket core 24 and the cylinder sections 26 of the sole core 25, the regions 16 of the deburring sections 12 of the deburring lamellae 9 protrude into the area 16a between the ribs 32 and the cylinder part 26 of the sole core 25, while the areas 17 of the deburring lamellae 9 protrude into or are aligned with an area 17a offset by 90 ° to this.
  • the device according to the invention first moves the holding body 1 into the space between the wall 31 and the cylinder parts 26 until the spring bolts 23 come into contact with the water jacket core 24 in the areas 23a (FIG. 4). When this is done, the deburring sections 12 of the deburring blades 9 are still above the ridges 33, 34. Then the mounting plate 21 and with it the holding body 1 are moved further downward, the deburring blades 9 initially, as described above, through the ridges 33, 34 are raised and move radially inwards.
  • FIG. 1 A further embodiment of the device according to the invention is shown in longitudinal section in FIG. Basically identical parts are provided with the same reference symbols as above.
  • This device in turn also has a holding body 1 in the form of a cylinder jacket.
  • An inner ring 1 a is fastened to this in the lower region, as by gluing, which can optionally also be formed in one piece with the holding body 1.
  • a radial deburring element 9a in the form of a ring 10 provided with a separating point 10a is pushed over the inner ring 1a and is held axially by a supporting ring 4a which is firmly seated on the inner ring 1 or is integrally connected to it.
  • either the parts 1, 1a, 4a are all separate parts that are glued to one another, or the inner ring 1a is formed in one piece either with the holding body 1 or with the support ring 4a and firmly connected to the other part.
  • the radial play between the inner ring 1a and the deburring element 9a is, for example, such that the outer diameter of the inner ring 1a is 80 mm, but the inner diameter of the deburring ring 9a is 81 mm.
  • the radial width of the slot or the separation point 10a is dimensioned such that the deburring ring 9a can yield radially in the desired manner, that is to say can reduce its diameter.
  • the separation point 10a is inclined to the axis A of the holding body, preferably at 45 °, so that the two ends of the ring overlap in this area and thus deburring takes place on the deburring edge 13 over the entire circumference.
  • this device can also basically have other features, as described above, for example, the ring does not have to be completely circular-symmetrical, in particular in its outer region, but can have different radial extents in different angular areas, depending on the shape of the parts to be deburred.
  • the deburring device according to FIG. 5 is used in principle, as was described above with reference to FIGS. 3 and 4. To reduce the cross section, however, there is no axial movement relative to the holding body 1 here, as is the case with the lamellae of FIGS. 1 and 2, but the deburring ring 9 rather reduces its diameter, which is possible due to the play mentioned and the slot 10a.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Entgraten von Formen oder Kernen, insbesondere in engen Zwischenräumen derartiger Formen (siehe : DE-C-4002555).The invention relates to a device for deburring molds or cores, especially in narrow spaces between such molds (see: DE-C-4002555).

Es handelt sich hierbei in der Regel um Sand-Formen oder -Kerne, wie Wassermantelkerne, Sohlenkerne oder Kombinationen dergleichen, die zum Gießen von metallischen Teilen, wie beispielsweise Motorblöcken oder dergleichen, vorgesehen sind.These are generally sand molds or cores, such as water jacket cores, sole cores or combinations of the like, which are provided for casting metallic parts, such as engine blocks or the like.

Bei einer Vielzahl dieser Formen, beispielsweise bei der Kombination von Wassermantel- und Sohlen-Kernen sind zwischen einzelnen Abschnitten oder Formausbildungen nur sehr schmale Zwischenräume vorhanden, wobei tief in diesen Zwischenräumen nach Herstellen der Sand-Formen oder -Kerne Grate verbleiben können, beispielsweise im Bereich der Trennlinie zwischen einem Unter- und einem Oberwerkzeug, in dem die entsprechenden Formen oder Kerne hergestellt werden. Aus Gründen der Automatisierung sollen gemeinsam hergestellte Wassermantel- und Sohlen-Kerne sogleich zusammengesetzt werden. Es ist dann schwierig, in die Zwischenräume hineinzukommen, um die verbleibenden Grate zu entfernen, insbesondere wenn dies auch vollautomatisch erfolgen soll.In the case of a large number of these shapes, for example in the combination of water jacket and sole cores, there are only very narrow gaps between individual sections or mold configurations, and burrs can remain deep in these gaps after the sand molds or cores have been produced, for example in the region the dividing line between a lower and an upper tool, in which the corresponding shapes or cores are produced. For reasons of automation, jointly produced water jacket and sole cores should be put together immediately. It’s difficult then to get into the gaps to remove the remaining burrs, especially if this is also to be done fully automatically.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung zu schaffen, mit der ein automatisches Entgraten in schmalen, tiefen Zwischenräumen von Kern- oder Formteilen erfolgen kann.The invention is therefore based on the object of providing a device with which automatic deburring can be carried out in narrow, deep spaces between core or molded parts.

Erfindungsgemäß wird die genannte Aufgabe bei einer Vorrichtung der eingangs genannten Art durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.According to the invention, the stated object is achieved in a device of the type mentioned at the outset by the characterizing features of claim 1.

In bevorzugter Ausgestaltung ist dabei vorgesehen, daß das Entgratelement ein mit einer Trennstelle versehener Ring ist, wobei insbesondere die Trennstelle geneigt zur Achse, vorzugsweise unter 45°, verläuft.In a preferred embodiment it is provided that the deburring element is a ring provided with a separation point, the separation point in particular being inclined to the axis, preferably at 45 °.

Eine Ausgestaltung für komplexere zu entgratende Teile sieht vor, daß als Entgratelemente Entgratlamellen derart axial verschiebbar gelagert sind, daß sie bei Verschiebung in einer Richtung zurückweichen und bei Verschiebung in der entgegengesetzten Richtung sich nach vorne bewegen, wobei die Entgratlamellen einen Entgratabschnitt aufweisen, der sich unter einem endlichen Winkel zur Verschieberichtung vom Haltekörper forterstreckt.An embodiment for more complex parts to be deburred provides that deburring elements are mounted so as to be axially displaceable as deburring elements in such a way that they move back in one direction when displaced and move forward when displaced in the opposite direction, the deburring elements having a deburring section which is underneath extends a finite angle to the direction of displacement from the holding body.

Der Haltekörper kann verschiedenartigste Form aufweisen. In bevorzugter Ausgestaltung ist er zylindermandelförmig, weist also den Querschnitt eines Kreises auf; er kann weiterhin einen vier- oder mehreckigen querschnitt oder aber einen Querschnitt beliebiger Kontur aufweisen. In der Regel wird allerdings der Querschnitt über die geHöhe des Haltekörpers im wesentlichen gleich bleiben. Derart kann der Haltekörper mit seinen vorzugsweise in seinem unteren Bereich angeordneten, zumindest radial, gegebenenfalls auch axial beweglichen Entgratkörpern mit senkrecht zur Verschieberichtung ausgerichteten Entgratabschnitten in die Zwischenräume des zu bearbeitenden Werkstücks eintauchen, bis die Entgratabschnitte der Entgratlamellen die Grate untergreifen. Durch Hin- und Herbewegung kratzen die freien Seiten der Entgratabschnitte die Grate langsam ab, so daß diese entfernt werden. Während die Entgratabschnitte senkrecht zur Achse des Haltekörpers nach außen, beispielsweise bei einem zylindermantelförmigen Haltekörper radial nach außen ragen können, kann die erfindungsgemäße Vorrichtung auch derart ausgebildet sein, daß Entgratabschnitte nach innen, also gegeneinander, ragen, beispielsweise bei einem zylindermantelförmigen Haltekörper radial nach innen. Die radiale Erstreckung der Entgratabschnitte muß nicht über den gesamten Umfang des Haltekörpers gleich sein, sondern kann unterschiedlich sein, beispielsweise in besonders engen Bereichen abgeflacht bzw. verkürzt sein.The holding body can have a wide variety of shapes. In a preferred embodiment, it is cylindrical in the form of a cylinder, ie it has the cross section of a circle; it can also have a quadrangular or polygonal cross-section or a cross-section of any contour. As a rule, however, the cross section is about the height of the holding body remain essentially the same. In this way, the holding body, with its deburring bodies, which are preferably arranged in its lower region and are at least radially, possibly also axially movable, with deburring sections oriented perpendicular to the direction of displacement, can be immersed in the spaces between the workpiece to be machined until the deburring sections of the deburring lamellae engage under the burrs. The free sides of the deburring sections slowly scrape the burrs back and forth so that they are removed. While the deburring sections can protrude radially outwards perpendicular to the axis of the holding body, for example in the case of a cylindrical casing-shaped holding body, the device according to the invention can also be designed such that deburring sections protrude inwards, i.e. against one another, for example in the case of a cylindrical casing-shaped holding body radially inwards. The radial extent of the deburring sections need not be the same over the entire circumference of the holding body, but can be different, for example flattened or shortened in particularly narrow areas.

Eine weitere bevorzugte Ausgestaltung der erfindungsgemäßen Vorrichtung zeichnet sich dadurch aus, daß die Entgratlamellen in einem Zwischenraum zwischen dem Haltekörper und einem diesen umgebenden Haltering mit Spiel in Verschieberichtung und senkrecht hierzu beweglich gelagert sind.A further preferred embodiment of the device according to the invention is characterized in that the deburring lamellae are movably mounted in a space between the holding body and a retaining ring surrounding it with play in the direction of displacement and perpendicularly thereto.

Eine Weiterbildung sieht vor, daß die Entgratlamellen als Winkelteil mit einem sich in Verschieberichtung erstreckenden Führungsschenkel ausggebildet sind, wodurch eine sichere Führung der Entgratlamellen gewährleistet ist.A further development provides that the deburring lamellae are designed as an angular part with a guide leg extending in the direction of displacement, which ensures reliable guiding of the deburring lamellae.

In Weiterbildung ist vorgesehen, daß die Entgratlamellen auf einer schrägen Fläche aufsitzen, wobei insbesondere die gesamte Anordnung im wesentlichen kreisförmigen Querschnitt aufweist.In a further development it is provided that the deburring lamellae sit on an inclined surface, the entire arrangement in particular having an essentially circular cross section.

Eine andere Ausbildung sieht vor, daß die Entgratabschnitte der Entgratelemente in verschiedenen Umfangsbereichen sich radial unterschiedlich weit erstrecken bzw. unterschiedliche Länge aufweisen, also gegebenenfalls die Entgratabschnitte der einzelnen Entgratlamellen sich senkrecht zur Verschieberichtung unterschiedlich weit erstrecken bzw. unterschiedliche Länge aufweisen.Another embodiment provides that the deburring sections of the deburring elements extend radially to different extents or have different lengths in different circumferential regions, that is to say if necessary the deburring sections of the individual deburring lamellae extend to different extents perpendicular to the displacement direction or have different lengths.

In Weiterbildung kann darüber hinaus vorgesehen sein, daß mehrere Haltekörper mit an ihnen zumindestens radial nachgiebig gelagerten Entgratlamellen angeordnet sind und insbesondere, daß mehrere Haltekörper mit in ihnen axial verschiebbaren und nach innen und außen beweglichen Entgratlamellen mit sich senkrecht zur Verschieberichtung erstreckenden Entgratabschnitten an einer Montageplatte angeordnet sind. Wenn mehrteilige Werkstücke bearbeitet werden, die lediglich zusammengesteckt sind, so zeichnet sich eine vorteilhafte Ausgestaltung der erfindungsgemäßen Vorrichtung dadurch aus, daß neben den Haltekörpern, sich parallel zur Verschieberichtung erstreckend, elastisch vorgespannte Federbolzen angeordnet sind.In a further development it can also be provided that a plurality of holding bodies with at least radially resiliently mounted deburring lamellae are arranged and in particular that a plurality of holding bodies with deburring lamellae axially displaceable in them and movable inwards and outwards are arranged on a mounting plate with deburring sections extending perpendicular to the direction of displacement are. If multi-part workpieces are processed, which are only put together, an advantageous embodiment of the device according to the invention is characterized in that in addition to the holding bodies, extending parallel to the direction of displacement, elastically biased spring bolts are arranged.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den Ansprüchen und aus der nachfolgenden Beschreibung, in der ein bevorzugtes Ausführungsbeispiel der Erfindung unter Bezugnahme auf die Zeichnung im einzelnen erläutert ist. Dabei zeigt:

Figur 1
einen Längsschnitt durch das bevorzugte Ausführungsbeispiel der erfindungsgemäßen Vorrichtung zum Entgraten;
Figur 2
einen Querschnitt entsprechend II-II der Figur 1;
Figur 3
eine Darstellung des Einsatzes einer erfindungsgemäßen Vorrichtung;
Figur 4
eine Sicht entsprechend IV-IV der Figur 3; und
Figur 5
eine weitere vereinfachte Ausgestaltung der erfindungsgemäßen Vorrichtung.
Further advantages and features of the invention result from the claims and from the following description, in which a preferred embodiment of the invention is explained in detail with reference to the drawing. It shows:
Figure 1
a longitudinal section through the preferred embodiment of the device for deburring according to the invention;
Figure 2
a cross section corresponding to II-II of Figure 1;
Figure 3
a representation of the use of a device according to the invention;
Figure 4
a view corresponding to IV-IV of Figure 3; and
Figure 5
a further simplified embodiment of the device according to the invention.

Die erfindungsgemäße Vorrichtung zum Entgraten von Formen oder Kernen weist zunächst einen Haltekörper 1 auf, der in der dargestellten bevorzugten Ausführungsform grundsätzlich die Form eines Zylindermantels hat. Der Haltekörper 1 kann aber auch verschiedenartige Kontur aufweisen, wie im Schnitt rechteckige, mehreckige Kontur oder beliebige Querschnittsformen. Wesentlich ist lediglich, daß über seine Höhe hin die Querschnittsform im wesentlichen gleich ist.The device according to the invention for deburring molds or cores initially has a holding body 1 which, in the preferred embodiment shown, basically has the shape of a cylinder jacket. The holding body 1 can also have different types of contours, such as rectangular, polygonal contours or any cross-sectional shape. It is only essential that the cross-sectional shape is essentially the same over its height.

An der Außenseite des Haltekörpers 1 ist in dessen unterem Bereich eine Ringausnehmung 2 ausgebildet, die von oben her nach außen, d.h. über ihren Umfang hin durch einen Haltering 3 abgedeckt ist. Unterhalb des Halterings 3 befindet sich unmittelbar auf dem Haltekörper 1 ein Spreizring 4. Der obere Bereich 6 des Spreizringes 4 ist abgeschrägt, beispielsweise unter einem Winkel von 30° zur Längsachse A des Haltekörpers 1, und weist einen endlichen Abstand zur unteren Kante 7 des Halterings 3 auf.On the outside of the holding body 1, an annular recess 2 is formed in its lower region, which is covered from the top to the outside, ie over its circumference by a retaining ring 3. Below the retaining ring 3 there is an expansion ring 4 directly on the retaining body 1. The upper region 6 of the expansion ring 4 is chamfered, for example at an angle from 30 ° to the longitudinal axis A of the holding body 1, and has a finite distance from the lower edge 7 of the holding ring 3.

In der Ringausnehmung 2 zwischen dem Haltering 3 und dem auf dessen Höhe befindlichen Bereich 8 des Haltekörpers 1 sind um den Umfang des Haltekörpers 1 eine Vielzahl von Entgratlamellen 9 angeordnet. Diese sind in der dargestellten Ausführungsform als Winkelteile ausgebildet und weisen einen Führungsschenkel 11 auf, der parallel zur Achse A ausgerichtet ist und in die Ausnehmung 2 hineinragt. Am unteren Ende des Führungsschenkels 11 ist winklig ein Entgratabschnitt 12 ausgebildet, der im Zwischenraum zwischen der Unterkante 7 des Halterings 3 und der Schräge 6 des Spreizrings 4 nach außen, hier radial nach außen ragt. Die Breite des Führungsschenkels 11 ist geringer als die Breite der Ausnehmung 2 zwischen Haltering 3 und Bereich 8 des Haltekörpers 1. Wenn die Entgratlamelle 9 mit dem freien Ende 13 des Entgratabschnitts 12 durch einen Grat an einem zu bearbeitenden Werkstück nach oben gedrückt wird (beim Herunterbewegen der erfindungsgemäßen Vorrichtung mit dem Haltekörper 1 in Richtung B), so gleitet die Entgratlamelle entlang der Schräge 6 einerseits entgegen der Bewegungsrichtung B des Haltekörpers 1 nach oben, bewegt sich andererseits aber senkrecht zu der Bewegungsrichtung B in Richtung C nach innen, also radial nach innen. Wenn dagegen der Haltekörper 1 wieder entgegen der Bewegungsrichtung B linear nach oben bewegt wird (die Hin- und Herbewegung erstreckt sich beispielsweise über 10 mm), so kommt der Entgratabschnitt 12 mit seiner äußeren oberen Kante an einem Grat zum Anliegen, wird von diesem nach unten und gleichzeitig entgegen der Richtung C (radial) nach außen gezogen, bis die Entgratlamelle mit ihrem Führungsschenkel 11 an dem Haltering 3 zum Anliegen kommt. Wird der Haltekörper 1 dann weiter nach oben bewegt, so streift die Entgratlamelle 9 mit der äußeren oberen Kante ihres Entgratabschnittes 12 den Grat der zu bearbeitenden Form oder des zu bearbeitenden Kerns ab.In the ring recess 2 between the retaining ring 3 and the area 8 of the holding body 1 located at its height, a plurality of deburring lamellae 9 are arranged around the circumference of the holding body 1. In the embodiment shown, these are designed as angular parts and have a guide leg 11 which is aligned parallel to the axis A and projects into the recess 2. At the lower end of the guide leg 11, a deburring section 12 is formed at an angle, which projects outwards, here radially outwards, in the space between the lower edge 7 of the retaining ring 3 and the bevel 6 of the expansion ring 4. The width of the guide leg 11 is less than the width of the recess 2 between the retaining ring 3 and the area 8 of the holding body 1. When the deburring lamella 9 with the free end 13 of the deburring section 12 is pressed upwards by a burr on a workpiece to be machined (when moving downward) of the device according to the invention with the holding body 1 in the direction B), the deburring lamella slides along the bevel 6 on the one hand against the direction of movement B of the holding body 1 upwards, but on the other hand moves perpendicular to the direction of movement B in the direction C inwards, that is to say radially inwards . If, on the other hand, the holding body 1 is again moved linearly upward against the direction of movement B (the back-and-forth movement extends, for example, over 10 mm), the deburring section 12 comes to rest on a ridge with its outer upper edge, from which it comes down and at the same time pulled outward in the opposite direction C (radially) until the deburring lamella comes into contact with the retaining ring 3 with its guide leg 11. If the holding body 1 is then moved upward, the deburring lamella grazes 9 with the outer upper edge of its deburring section 12 from the burr of the shape or core to be machined.

Die Erstreckung des Entgratabschnitts 12 kann auch bei beispielsweise einem Haltekörper 1 mit grundsätzlich zylindrischem Querschnitt in Anpassung an die zu bearbeitenden Werkstücke wie Formen oder Kerne unterschiedlich gewählt werden, wie dies in Figur 2 der Fall ist, wo in sehr engen Bereichen zwischen Teilen eines solchen Werkstücks, beispielsweise zylindrischen Teilen eines Sohlenkerns und zwischen diesen ragenden Bereichen eines Wassermantelkerns (Fig. 3) zu entgraten ist. Hierzu sind die Entgratabschnitte in dem Bereich 16 der Figur 2 gegenüber denen im Bereich 17 gekürzt.The extent of the deburring section 12 can also be selected differently, for example in the case of a holding body 1 with a fundamentally cylindrical cross section, in adaptation to the workpieces to be machined, such as shapes or cores, as is the case in FIG. 2, where in very narrow areas between parts of such a workpiece , for example cylindrical parts of a sole core and between these projecting regions of a water jacket core (FIG. 3) is to be deburred. For this purpose, the deburring sections in area 16 of FIG. 2 are shortened compared to those in area 17.

Während in der Figur 1 eine erfindungsgemäße Vorrichtung zum Entgraten dargestellt ist, die alleine aus einem Haltekörper 1 besteht, an dem dann eine Vorrichtung zur Hin- und Herbewegung desselben in der Richtung B (parallel zur Achse A) angreifen kann, zeigt die Figur 3 eine erfindungsgemäße Vorrichtung zum Entgraten für den Wassermantel- und Sohlen-Kern für einen Verbrennungsmotor. Bei der erfindungsgemäßen Vorrichtung der Figur 3 sind an einer Montageplatte 21 mehrere Haltekörper 1 in der unter Bezug auf die Figur 1 beschriebenen Ausgestaltung befestigt, von denen allerdings nur einer teilweise im Längsschnitt (linke Seite), teilweise in der Außenansicht mit weggebrochenen Teilen dargestellt ist.While a device for deburring according to the invention is shown in FIG. 1, which consists solely of a holding body 1, on which a device for moving it back and forth in direction B (parallel to axis A) can then engage, FIG. 3 shows one Deburring device according to the invention for the water jacket and sole core for an internal combustion engine. In the device according to the invention in FIG. 3, a plurality of holding bodies 1 in the configuration described with reference to FIG. 1 are fastened to a mounting plate 21, only one of which is shown in part in longitudinal section (left side) and in part in the external view with parts broken away.

An der Montageplatte 21 sind weiter durch eine Feder 22 elastisch vorgespannte Federbolzen 23 vorgesehen, die sich in Richtung der Achse A und damit in Bewegsrichtung B der Vorrichtung erstrecken. Die Federbolzen 23 kommen in einem Bereich 23a des Wassermantel-Kerns 24 zur Anlage und verhindern, daß dieser sich vom Sohlen-Kern 25 löst.On the mounting plate 21 are further provided by a spring 22 elastically biased spring bolts 23 which are in the direction of the axis A and thus in the direction of movement B extend the device. The spring bolts 23 come to rest in a region 23a of the water jacket core 24 and prevent the latter from detaching from the sole core 25.

Mit der erfindungsgemäßen Vorrichtung, die im oberen Teil der Figur 3 dargestellt ist, wird eine Wassermantel-Sohlen-Kern-Kombination bearbeitet, die im unteren Teil der Figur 3 dargestellt ist. Ein solches Werkstück besteht aus dem genannten Wassermantel-Kern 24 und dem Sohlen-Kern 25, an dem einstückig zylinderförmige Abschnitte 26 ausgebildet sind. Der Wassermantel-Kern 24 sitzt auf einem unteren Teil 27 des Sohlen-Kerns 25 auf und wird in diesem gegen Verschiebung durch in Ausnehmungen 28 ragende Stifte 29 gehalten.With the device according to the invention, which is shown in the upper part of FIG. 3, a water jacket-sole-core combination is processed, which is shown in the lower part of FIG. Such a workpiece consists of the aforementioned water jacket core 24 and the sole core 25, on which cylindrical sections 26 are formed in one piece. The water jacket core 24 is seated on a lower part 27 of the sole core 25 and is held in this against displacement by pins 29 projecting into recesses 28.

Während die Umfangswand 31 des Wassermantel-Kerns nahezu über die Höhe der Zylinderteile 26 sich erstreckt, sind zwischen den Zylinderteilen 26 Rippen 32 des Wassermantel-Kerns ausgebildet, die nur über eine geringe Höhe über die Platte 27 hinausragen. Im oberen Bereich der Rippen 32 verbleiben nach der Herstellung des Wassermantel-Kerns Grate 33; in entsprechender Weise verbleiben Grate 34 auf der gleichen Höhe an der Innenseite der Außenwandung 31. Derartige Grate sollen durch die erfindungsgemäße Vorrichtung entgratet werden, wobei der Zwischenraum zwischen den Rippen 32 und der Außenwandung 31 und den Zylinderabschnitten 36 nur wenige mm, beispielsweise 8 bis 10 mm beträgt, gleichzeitig der Abstand der Grate 33, 34 bis zur Oberkante des Wassermantel-Kerns 24 mehrere cm, beispielsweise etwa 10 cm, betragen kann.While the peripheral wall 31 of the water jacket core extends almost over the height of the cylinder parts 26, ribs 32 of the water jacket core are formed between the cylinder parts 26, which protrude only over a small height above the plate 27. After the water jacket core has been produced, burrs 33 remain in the upper region of the ribs 32; Correspondingly, burrs 34 remain at the same height on the inside of the outer wall 31. Burrs of this type are to be deburred by the device according to the invention, the space between the ribs 32 and the outer wall 31 and the cylinder sections 36 being only a few mm, for example 8 to 10 mm, the distance between the ridges 33, 34 to the upper edge of the water jacket core 24 can be several cm, for example about 10 cm.

Zum Entgraten fährt die erfindungsgemäße Vorrichtung mit ihren Haltekörpern 1 in den Zwischenraum 36 zwischen dem Wassermantel-Kern 24 und den Zylinderabschnitten 26 des Sohlen-Kerns 25, wobei die Bereiche 16 der Entgratabschnitte 12 der Entgratlamellen 9 in den Bereich 16a zwischen den Rippen 32 und dem Zylinderteil 26 des Sohlen-Kerns 25 ragen, während die Bereiche 17 der Entgratlamellen 9 in einen hierzu um 90° versetzten Bereich 17a ragen bzw. in diesen ausgerichtet sind.For deburring, the device according to the invention moves with its holding bodies 1 into the intermediate space 36 between the water jacket core 24 and the cylinder sections 26 of the sole core 25, the regions 16 of the deburring sections 12 of the deburring lamellae 9 protrude into the area 16a between the ribs 32 and the cylinder part 26 of the sole core 25, while the areas 17 of the deburring lamellae 9 protrude into or are aligned with an area 17a offset by 90 ° to this.

Die erfindungsgemäße Vorrichtung fährt den Haltekörper 1 zunächst soweit in den Zwischenraum zwischen der Wandung 31 und den Zylinderteilen 26, bis die Federbolzen 23 in den Bereichen 23a (Figur 4) zur Anlage am Wassermantel-Kern 24 gelangen. Wenn diese Anlage erfolgt, befinden sich die Entgratabschnitte 12 der Entgratlamellen 9 noch oberhalb der Grate 33, 34. Anschließend wird die Montageplatte 21 und mit ihr der Haltekörper 1 weiter nach unten bewegt, wobei die Entgratlamellen 9 zunächst, wie oben beschrieben, durch die Grate 33, 34 angehoben werden und sich dabei radial nach innen bewegen. Entweder fallen sie, wenn der durch die Grate 33, 34 freigelassene Freiraum ausreicht, an den Graten vorbei nach unten und bewegen sich dabei wieder nach außen, oder aber beim weiteren Abbewegen, wenn sie sich nicht mehr nach innen bewegen können, schneiden sie schon den äußeren Bereich der Grate 33, 34 ab. Die erfindungsgemäße Vorrichtung bewegt sich jeweils nach unten und nach oben. Wenn sie sich wieder nach oben bewegt, so nimmt sie die Entgratlamellen mit, die mit ihrer äußeren oberen Kante an den Graten 33, 34 zum Anliegen kommen und diese dort abschneiden. Die Auf- und Abbewegung wird so lange wiederholt, bis die Grate 33, 34 vollständig entfernt sind.The device according to the invention first moves the holding body 1 into the space between the wall 31 and the cylinder parts 26 until the spring bolts 23 come into contact with the water jacket core 24 in the areas 23a (FIG. 4). When this is done, the deburring sections 12 of the deburring blades 9 are still above the ridges 33, 34. Then the mounting plate 21 and with it the holding body 1 are moved further downward, the deburring blades 9 initially, as described above, through the ridges 33, 34 are raised and move radially inwards. Either they fall down past the ridges when the free space left by the ridges 33, 34 is sufficient and move outwards again, or when they are moved further away if they can no longer move inwards, they already cut it outer region of the ridges 33, 34. The device according to the invention moves downwards and upwards. When it moves up again, it takes along the deburring lamellae, which come to rest against the ridges 33, 34 and cut them off there. The up and down movement is repeated until the ridges 33, 34 are completely removed.

In der Figur 5 ist im Längsschnitt eine weitere Ausbildung der erfindungsgemäßen Vorrichtung dargestellt. Grundsätzlich gleiche Teile sind mit gleichen Bezugszeichen wie vorstehend versehen.A further embodiment of the device according to the invention is shown in longitudinal section in FIG. Basically identical parts are provided with the same reference symbols as above.

Diese Vorrichtung weist auch wiederum einen Haltekörper 1 in der Form eines Zylindermantels auf. An diesem ist im unteren Bereich ein Innenring 1a befestigt, wie durch Kleben, der gegebenenfalls auch einstückig mit dem Haltekörper 1 ausgebildet sein kann. Über den Innenring 1a ist mit radialem Spiel ein Entgratelement 9a in Form eines mit einer Trennstelle 10a versehenen Ringes 10 geschoben, der durch einen fest auf dem Innenring 1 aufsitzenden oder aber mit diesem einstückig verbundenen Tragring 4a axial gehalten wird.This device in turn also has a holding body 1 in the form of a cylinder jacket. An inner ring 1 a is fastened to this in the lower region, as by gluing, which can optionally also be formed in one piece with the holding body 1. A radial deburring element 9a in the form of a ring 10 provided with a separating point 10a is pushed over the inner ring 1a and is held axially by a supporting ring 4a which is firmly seated on the inner ring 1 or is integrally connected to it.

Aus herstellungstechnischen Gründen sind entweder die Teile 1, 1a, 4a sämtlich separate Teile, die miteinander verklebt sind, oder aber der Innenring 1a ist entweder mit dem Haltekörper 1 oder aber mit dem Tragring 4a einstückig ausgebildet und mit dem anderen Teil fest verbunden.For manufacturing reasons, either the parts 1, 1a, 4a are all separate parts that are glued to one another, or the inner ring 1a is formed in one piece either with the holding body 1 or with the support ring 4a and firmly connected to the other part.

Das radiale Spiel zwischen dem Innenring 1a und dem Entgratelement 9a ist beispielsweise derart, daß der Außendurchmesser des Innenrings 1a 80 mm beträgt, der Innendurchmesser des Entgratrings 9a aber 81 mm. Die radiale Breite des Schlitzes oder der Trennstelle 10a ist derart bemessen, daß der Entgratring 9a radial in der gewünschten Weise nachgeben kann, also seinen Durchmesser reduzieren kann. Die Trennstelle 10a ist zur Achse A des Haltekörpers geneigt ausgebildet, vorzugsweise unter 45°, damit die beiden Enden des Ringes sich in diesem Bereich überlappen und damit ein Entgraten an der Entgratkante 13 über den gesamten Umfang hin erfolgt.The radial play between the inner ring 1a and the deburring element 9a is, for example, such that the outer diameter of the inner ring 1a is 80 mm, but the inner diameter of the deburring ring 9a is 81 mm. The radial width of the slot or the separation point 10a is dimensioned such that the deburring ring 9a can yield radially in the desired manner, that is to say can reduce its diameter. The separation point 10a is inclined to the axis A of the holding body, preferably at 45 °, so that the two ends of the ring overlap in this area and thus deburring takes place on the deburring edge 13 over the entire circumference.

Ansonsten kann auch diese Vorrichtung grundsätzlich weitere Merkmale, wie sie oben beschrieben wurden, aufweisen, beispielsweise muß der Ring insbesondere in seinem Außenbereich nicht völlig kreissymmetrisch sein, sondern kann in unterschiedlichen angularen Bereichen unterschiedliche Radialerstreckungen aufweisen, je nach der Form der zu entgratenden Teile.Otherwise, this device can also basically have other features, as described above, for example, the ring does not have to be completely circular-symmetrical, in particular in its outer region, but can have different radial extents in different angular areas, depending on the shape of the parts to be deburred.

Der Einsatz der Entgratvorrichtung nach der Figur 5 erfolgt grundsätzlich, wie dies oben unter Bezugnahme auf die Figuren 3 und 4 beschrieben wurde. Zur Querschnittsreduzierung findet hier allerdings keinerlei Axialbewegung relativ zum Haltekörper 1 statt, wie dies bei den Lamellen der Figuren 1 und 2 der Fall ist, sondern der Entgratring 9 reduziert vielmehr seinen Durchmesser, was durch das genannte Spiel sowie den Schlitz 10a möglich ist.The deburring device according to FIG. 5 is used in principle, as was described above with reference to FIGS. 3 and 4. To reduce the cross section, however, there is no axial movement relative to the holding body 1 here, as is the case with the lamellae of FIGS. 1 and 2, but the deburring ring 9 rather reduces its diameter, which is possible due to the play mentioned and the slot 10a.

Claims (14)

  1. Device for deburring moulds or cores, particularly in narrow gaps of such moulds, characterized by a holding member (1), whose outer contour corresponds to the inner wall of the mould or core to be worked and on whose circumference is radially resiliently mounted at least one deburring element projecting radially over the holding member in the unloaded state.
  2. Device according to claim 1, characterized in that the deburring element is a ring having a break.
  3. Device according to claim 2, characterized in that the break is inclined to the axis, preferably by 45°.
  4. Device according to claim 1, characterized in that as deburring elements deburring disks (9) are so axially displaceably mounted that during a displacement in a direction (B) they give way in the direction (C) and in the case of a displacement in the opposite direction (-B) move forwards (in the direction -C), the deburring disks (9) having a deburring portion (12), which extends away from the holding member (1) under a finite angle to the displacement direction (B).
  5. Device according to claim 4, characterized in that the deburring disks (9) are movably mounted in a gap (2) between the holding member (1) and a holding ring (3) surrounding it, with a clearance in the displacement direction (B) and perpendicular thereto (in direction C).
  6. Device according to claim 4 or 5, characterized in that the deburring disks (9) are constructed as angular members with a guide leg (11) extending in the displacement direction (B).
  7. Device according to one of the claims 4 to 6, characterized in that the deburring disks (9) rest on a sloping surface (6).
  8. Device according to claim 7, characterized in that the sloping surface is constructed in the upper area of an expanding ring (4) surrounding the lower region of the holding body (1).
  9. Device according to one of the preceding claims, characterized in that the deburring portions (12) of the deburring elements (9) in different circumferential areas extend to radially differing extents or have different lengths.
  10. Device according to one of the preceding claims, characterized in that the holding member (1) has a cylinder jacket-like construction.
  11. Device according to claim 10, characterized in that the complete arrangement has a substantially circular cross-section.
  12. Device according to one of the claims 1 to 11, characterized in that several holding members (1) are provided with deburring elements mounted thereon so as to be at least radially resilient (in direction C).
  13. Device according to one of the claims 4 to 12, characterized in that there are several holding members (1) with deburring elements (9) axially displaceable therein (in direction B) and movable inwards and outwards (in direction C) with deburring portions extending perpendicular to the displacement direction (B) on a mounting plate (21).
  14. Device according to one of the preceding claims, characterized in that elastically pretensioned spring bolts (23) are arranged alongside the holding members (1) extending parallel to the axis of the holding member (1).
EP19930119491 1993-01-27 1993-12-03 Device for deburring of moulds and cores Expired - Lifetime EP0608518B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934302227 DE4302227C2 (en) 1993-01-27 1993-01-27 Device for deburring molds and cores
DE4302227 1993-01-27

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EP0608518A2 EP0608518A2 (en) 1994-08-03
EP0608518A3 EP0608518A3 (en) 1995-02-01
EP0608518B1 true EP0608518B1 (en) 1997-10-08

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US (1) US5477908A (en)
EP (1) EP0608518B1 (en)
JP (1) JPH06234043A (en)
DE (2) DE4302227C2 (en)
DK (1) DK0608518T3 (en)
ES (1) ES2110048T3 (en)

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DE102004001436B3 (en) * 2004-01-09 2005-06-16 Rautenbach-Guß Wernigerode GmbH Separation line deburring process and assembly for sand-cast metal components e.g. automotive engine block involves treating components along separation line using a deburring box assembly with an elastic tip
KR100629316B1 (en) 2004-08-31 2006-10-11 주식회사 진성티이씨 Floating seal feeder
CN107186187A (en) * 2017-06-20 2017-09-22 石家庄钢铁有限责任公司 A kind of removable cleaning plant of continuous cast rectangle billet burr
AT522989B1 (en) 2019-10-03 2021-12-15 Fill Gmbh surface treatment process

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JPS5347551B2 (en) * 1972-02-08 1978-12-21
JPS608882Y2 (en) * 1979-10-09 1985-03-30 日本鋼管株式会社 Continuously cast slab cutting burr removal equipment
DE3028666C2 (en) * 1980-07-29 1982-09-23 Bayerische Motoren Werke AG, 8000 München Device for deburring sand cores
JPS58187257A (en) * 1982-04-24 1983-11-01 Nissan Motor Co Ltd Cutter for fin
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DD211071B1 (en) * 1982-11-01 1986-12-10 Beier Hans Michael DEVICE FOR DISCONNECTING EXCEPTIONAL MATERIAL ON CASTINGS
DE3322567C2 (en) * 1983-06-23 1985-05-23 Georg Fischer GmbH, 4020 Mettmann Device for deburring workpieces designed as foundry cores or the like
JPS6178536A (en) * 1984-09-26 1986-04-22 Toyota Motor Corp Deflashing machine for core
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JPS63303678A (en) * 1987-06-02 1988-12-12 Toyota Motor Corp Deburring method
JPH02220765A (en) * 1989-02-20 1990-09-03 Yaskawa Electric Mfg Co Ltd Deburring tool holding apparatus
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FR2665394B1 (en) * 1990-08-03 1994-06-10 Figuereo Blaise AUTOMATIC PROCESS AND MACHINE FOR MANUFACTURING SIZED RINGS FROM A THREADED OR PROFILED EXTRUDAT.
DE4124508C1 (en) * 1991-07-24 1992-07-16 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Flash removal device for mouldings e.g. foundry core - includes baseplate mounted on base with rubber dampers interposed and with magnetic vibrator under baseplate

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Publication number Publication date
US5477908A (en) 1995-12-26
EP0608518A2 (en) 1994-08-03
JPH06234043A (en) 1994-08-23
DE59307504D1 (en) 1997-11-13
DE4302227C2 (en) 1995-05-24
ES2110048T3 (en) 1998-02-01
DE4302227A1 (en) 1994-07-28
DK0608518T3 (en) 1998-05-18
EP0608518A3 (en) 1995-02-01

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