EP0232531B1 - Centrifugal polishing machine - Google Patents

Centrifugal polishing machine Download PDF

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Publication number
EP0232531B1
EP0232531B1 EP86117764A EP86117764A EP0232531B1 EP 0232531 B1 EP0232531 B1 EP 0232531B1 EP 86117764 A EP86117764 A EP 86117764A EP 86117764 A EP86117764 A EP 86117764A EP 0232531 B1 EP0232531 B1 EP 0232531B1
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EP
European Patent Office
Prior art keywords
gap
casing
base
container
machine
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Expired - Lifetime
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EP86117764A
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German (de)
French (fr)
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EP0232531A3 (en
EP0232531A2 (en
Inventor
Friedhold Ditscherlein
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Max Spaleck GmbH and Co KG
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Max Spaleck GmbH and Co KG
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Publication of EP0232531A2 publication Critical patent/EP0232531A2/en
Publication of EP0232531A3 publication Critical patent/EP0232531A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
    • B24B31/108—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work involving a sectioned bowl, one part of which, e.g. its wall, is stationary and the other part of which is moved, e.g. rotated

Definitions

  • the invention relates to a centrifugal machine for mechanical processing, e.g. Grinding, polishing, cleaning and deburring of workpieces with a workpiece receptacle, which has a substantially fixed cylindrical casing and a rotating base coaxially mounted thereto in the form of a plate or the like, which extends with its peripheral edge to the casing with the formation of a gap therebetween , wherein the inner surface of the jacket is axially sectioned through the container to the inner surface of the bottom or is bent with a slight kink that it adjoins the inner surface of the bottom essentially without kinks.
  • a centrifugal machine for mechanical processing e.g. Grinding, polishing, cleaning and deburring of workpieces with a workpiece receptacle, which has a substantially fixed cylindrical casing and a rotating base coaxially mounted thereto in the form of a plate or the like, which extends with its peripheral edge to the casing with the formation of a gap therebetween , wherein the inner surface of the
  • a centrifugal machine of this type is already known (DE-B-16 52 151).
  • the gap between the inner lining extends from the container jacket and the container bottom at an angle of approximately 45 ° to the inner surfaces of this lining adjoining the gap.
  • the invention is based on the object, while avoiding these disadvantages, substantially increasing the relatively short operating time of the container casing which has hitherto existed in the case of the machines of the aforementioned type.
  • This object is achieved in a processing machine of this type in that the gap formed between the peripheral edge of the container bottom and the container jacket extends approximately perpendicular to the inner surfaces of the jacket and bottom adjoining the gap, and in that the inner surfaces of the jacket and the floor in the area of the gap have such an inclined position to the axis of rotation of the floor that the gap perpendicular to these inner surfaces extends at an angle between 30 ° and 90 ° to this axis of rotation.
  • DE-B-16 52 151 has already disclosed a centrifugal processing machine with a fixed cylindrical container shell and rotating container base, in which the gap formed between the peripheral edge of the base and the edge of the shell is approximately perpendicular to the inner surfaces adjoining the gap Extends mantle and bottom.
  • the inner surfaces of the jacket and base in the area of the gap are not oriented obliquely but essentially parallel to the axis of rotation of the base.
  • the gap also does not extend at an angle between 30 ° and 90 °, but perpendicular to this axis of rotation.
  • the kinkless curvature or the spherical segment-shaped design of the inner surface of the jacket prevents workpieces and treatment bodies to be machined from sticking in certain areas of the inner surface, with the result of increased abrasion in these areas. This also ensures a more uniform processing of all workpieces to be processed simultaneously in the container.
  • the adjustability of the width of the gap between the circumferential edge of the container bottom and the container casing over the entire container circumference by lifting and lowering the casing relative to its supporting device also serves to keep the abrasion on the gap walls as low as possible. It is also expedient in view of the manufacturing inaccuracies on the gap walls which are inevitable within certain tolerances.
  • the workpiece receiving container is formed by an upper cylindrical shell 1 and a lower, rotating plate-shaped base 2 which is mounted coaxially thereto and which projects with its peripheral edge onto the lower edge of the shell.
  • the cylindrical jacket 1 rests at its lower edge on the upper jacket edge of a carrier 3 located underneath, which is non-rotatable on a carrier 4 or the like.
  • Base is stored.
  • the bottom 2 of the workpiece receptacle sits on a vertical shaft 5, which is rotatably seated in the bearing 6 of the carrying container 3.
  • the base 2 is rotated by a drive wheel 7 via the rotary shaft.
  • the cylindrical container jacket 1 is provided with an inner lining 8 made of plastic, on the thickened lower edge of which the container base 2, which is also made of plastic, protrudes to form a narrow gap 9 which is at an angle of approximately 60 ° to the axis 10 of the container and the shaft 5 extends in order not to get any sharp edges on the inner lining of the casing and the edge of the bottom on both sides of the gap.
  • the resulting, relatively small inclination of the gap 9 with respect to the horizontal is expedient for the setting of the gap width, which is explained below, and which takes place by vertical movement of the jacket 1 of the workpiece holding container relative to its base 2.
  • a flange 11 is attached which extends radially beyond the outer surface of the jacket and extends around the entire circumference of the container.
  • the jacket 1 of the processing container rests on a counter flange 13 which is welded to the upper jacket edge of the carrier, via a ring 12 made of resilient material located between the two flanges.
  • Fixing screws 14 are provided in the flanges for fastening the jacket 8 to the carrying container 3. By tightening the fastening screws 14 more or less, the width of the gap 9 can be adjusted while compressing or widening the ring 12.
  • This setting option is also useful in view of the inevitable manufacturing inaccuracies on the two edges of the jacket 8 in certain tolerances. Since the workpiece receptacle is usually filled with a treatment liquid for processing the workpieces to be inserted into it, the ring 12 can also serve for the necessary sealing between the two flanges 11 and 13 located opposite one another.
  • the jacket 1 of the workpiece holder is formed and shaped symmetrically with respect to its central plane 16 extending perpendicular to the axis 10.
  • Its inner lining 8 thickens equally to its upper edge and to its lower edge, just as the upper edge is designed with a flange 11 and bores for receiving screws 17 like the lower edge.
  • a protective ring 18 is fastened on the upper edge of the casing, and the like when inserting and removing workpieces, machining bodies and the like. in or from the workpiece holder to prevent damage to the upper edge of the inner liner 8.
  • the container jacket 1 can be overturned due to its symmetrical design and arrangement described above and shown in the drawing. This is useful if the container jacket has been rubbed on one side of its inner surface. If you continue to use the container casing in an overturned position, the usage time of the container casing can double or almost double.
  • this jacket is divided into two identical parts 18, 19 in its central plane 16, which extends perpendicular to the jacket axis 10 and which are fastened to one another by means of screws 22 via radially projecting flanges 20, 21 are.
  • all that is required is to remove the protective ring 18 with the fastening screws 17 on the upper jacket edge and to loosen or remove the fastening screws 14 at the lower jacket edge.
  • the jacket can then be placed with its previous upper jacket edge turned down onto the flange 13 of the carrying container 3 and fastened to the carrying container with the fastening screws 14.
  • the inner lining 8 is designed so that it starts from the central plane 16 of the jacket in the axial section shown in Fig. 1 through the jacket with its inner surface initially straight, parallel to the outer surface of the jacket 1 extends in order to form an edge thickening with a bend in a slope, whereby the inner lining thickens towards the jacket edges. It is hereby achieved that the slope of the inner surface of the casing 1 adjoining the gap 9 extends at approximately the same angle to the gap depth as the inner surface of the base 2.
  • the inner surface of the inner lining 8 of the workpiece holder has a spherical segment shape, this inner surface adjoining the inner surface of the base 2 in the region of the gap 9 without kinks. With the exception of the central floor area, this results in an inner surface of the jacket and bottom of the workpiece holder which has no kinks which hinder the movement of the workpieces and treatment bodies in the workpiece holder and in some cases increased wear of the inner surfaces could lead.

Description

Die Erfindung betrifft eine Fliehkraftbearbeitungsmaschine für mechanische Bearbeitung, z.B. Schleifen, Polieren, Reinigen und Entgraten von Werkstücken mit einem Werkstückaufnahmebehälter, der einen im wesentlichen feststehenden zylindrischen Mantel und einen zu diesem koaxial gelagerten rotierenden Boden in Form eines Tellers oder dergleichen hat, welcher mit seinem Umfangsrand an den Mantel unter Bildung eines dazwischen befindlichen Spaltes heranragt, wobei die Innenfläche des Mantels im Axialschnitt durch den Behälter an die Innenfläche des Bodens derart herangewölbt oder mit schwacher Knickung herangeknickt ist, daß sie sich im wesentlichen knicklos an die Innenfläche des Bodens anschließt.The invention relates to a centrifugal machine for mechanical processing, e.g. Grinding, polishing, cleaning and deburring of workpieces with a workpiece receptacle, which has a substantially fixed cylindrical casing and a rotating base coaxially mounted thereto in the form of a plate or the like, which extends with its peripheral edge to the casing with the formation of a gap therebetween , wherein the inner surface of the jacket is axially sectioned through the container to the inner surface of the bottom or is bent with a slight kink that it adjoins the inner surface of the bottom essentially without kinks.

Eine Fliehkraftbearbeitungsmaschine dieser Gattung ist bereits bekannt (DE-B-16 52 151). Bei ihr erstreckt sich der Spalt zwischen der Innenauskleidung vom Behältermantel und Behälterboden in einem Winkel von etwa 45° zu den an den Spalt anschließenden Innenflächen dieser Auskleidung. Dadurch sind am Rand des Spaltes einerseits eine stark spitzwinkelige und andererseits eine stumpfwinkelige Kante gegeben, die beim Betrieb der Maschine einem raschen Abrieb unterliegen. Dies führt zu einer erheblichen Beschädigung der Innenauskleidungen und einer raschen Aufweitung des Spaltes und damit zu einer hohen Reparaturanfälligkeit der Maschine mit relativ kurzer Standzeit. Da außerdem der Spalt zwischen Mantel und Boden in einem großen Winkel zur Richtung der im Spalt wirkenden Fliehkraft sich erstreckt, können sich im Spalt eingedrungene Abriebteilchen und Schleifmittel festsetzen, die durch die gegebene Fliehkraft nicht durch diesen Spalt hindurchgeschleudert werden können, was wiederum zu einem erhöhten Abrieb der Auskleidungen im Spaltbereich und zu den damit verbundenen oben genannten Nachteilen führt.A centrifugal machine of this type is already known (DE-B-16 52 151). In this case, the gap between the inner lining extends from the container jacket and the container bottom at an angle of approximately 45 ° to the inner surfaces of this lining adjoining the gap. As a result, on the one hand, there is a strongly acute-angled edge on the one hand and an obtuse-angled edge on the edge of the gap, which are subject to rapid abrasion during operation of the machine. this leads to a considerable damage to the inner linings and a rapid widening of the gap and thus to a high susceptibility to repair of the machine with a relatively short service life. In addition, since the gap between the jacket and the floor extends at a large angle to the direction of the centrifugal force acting in the gap, abraded particles and abrasives which have penetrated into the gap can become lodged and cannot be thrown through this gap by the given centrifugal force, which in turn increases Abrasion of the linings in the gap area and leads to the disadvantages mentioned above.

Der Erfindung liegt die Aufgabe zugrunde, unter Vermeidung dieser Nachteile die bisher bei den Maschinen der eingangs genannten Gattung gegebene relativ geringe Einsatzzeit des Behältermantels wesentlich zu erhöhen. Diese Aufgabe wird erfindungsgemäß bei einer Bearbeitungsmaschine dieser Gattung dadurch gelöst, daß der zwischen dem Umfangsrand des Behälterbodens und dem Behältermantel gebildete Spalt sich angenähert senkrecht zu den an den Spalt anschließenden Innenflächen von Mantel und Boden erstreckt und daß die Innenflächen des Mantels und des Bodens im Bereich des Spaltes eine solche Schräglage zur Drehachse des Bodens haben, daß der zu diesen Innenflächen senkrechte Spalt sich in einem Winkel zwischen 30° und 90° zu dieser Drehachse erstreckt. Durch diese Ausbildung werden an den Rändern des Behälterbodens und des Behältermantels nur angenähert rechte Winkel zwischen der Innenauskleidung und dem Spalt erhalten, die beim Betrieb der Maschine weniger rasch abgenutzt werden als spitze Winkel und damit der Maschine eine längere Standzeit verleihen. Ferner wird ein radial nach außen abfallender Spalt erhalten, wodurch in den Spalt eingedrungene Abriebteilchen, Verunreinigungen oder Schleifmittelteilchen durch Fliehkraft aus dem Spalt herausgetrieben werden und damit sich dort nicht festsetzen und einen erhöhten Abrieb an den Spaltseitenwänden und an den Ecken der Innenauskleidung hervorrufen können.The invention is based on the object, while avoiding these disadvantages, substantially increasing the relatively short operating time of the container casing which has hitherto existed in the case of the machines of the aforementioned type. This object is achieved in a processing machine of this type in that the gap formed between the peripheral edge of the container bottom and the container jacket extends approximately perpendicular to the inner surfaces of the jacket and bottom adjoining the gap, and in that the inner surfaces of the jacket and the floor in the area of the gap have such an inclined position to the axis of rotation of the floor that the gap perpendicular to these inner surfaces extends at an angle between 30 ° and 90 ° to this axis of rotation. By this design, only approximately right angles between the inner lining and the gap are obtained at the edges of the container bottom and the container shell, which are less quickly worn during operation of the machine than acute angles and thus give the machine a longer service life. Furthermore, a radially outward sloping gap is obtained, whereby in the gap penetrated abrasion particles, impurities or abrasive particles are driven out of the gap by centrifugal force and thus do not get stuck there and can cause increased abrasion on the gap side walls and on the corners of the inner lining.

Zwar ist durch die DE-B-16 52 151 bereits eine Fliehkraftbearbeitungsmaschine mit feststehenden zylindrischem Behältermantel und rotierendem Behälterboden bekannt geworden, bei der der zwischen dem Umfangsrand des Bodens und dem Rand des Mantels gebildete Spalt sich angenähert senkrecht zu den an den Spalt anschließenden Innenflächen von Mantel und Boden erstreckt. Bei dieser bekannten Maschine sind jedoch die Innenflächen von Mantel und Boden im Bereich des Spaltes nicht schräg sondern im wesentlichen paralell zur Drehachse des Bodens ausgerichtet. Auch erstreckt sich der Spalt nicht in einem Winkel zwischen 30° und 90°, sondern senkrecht zu dieser Drehachse. Dadurch ist auch bei dieser Maschine ein relativ rascher Abrieb der Innenauskleidung im Bereich des Spaltes und damit eine relativ geringe Standzeit gegeben. Hinzu kommt noch, daß bei dieser Maschine die Innenfläche des Mantels im Axialschnitt durch den Behälter nicht an die Innenfläche des Bodens herangewölbt ist. Durch die bei dieser Maschine somit im Bereich des Spaltes gegebene senkrechte Ausrichtung der Innenauskleidung zur Fliehkraftenergie der Werkstücke verlieren diese beim Betrieb der Maschine, bei dem sie durch ihre Fliehkraftenergie am Behälterrand nach oben getrieben werden, schon vor Erreichen des Spaltes ihre Fliehkraftenergie, was dazu führt, daß sie gerade im kritischen Bereich des Spaltes länger an der Innenauskleidung beiderseits des Spaltes verweilen und dort zu einem örtlich sehr starken und raschen Abrieb führen.DE-B-16 52 151 has already disclosed a centrifugal processing machine with a fixed cylindrical container shell and rotating container base, in which the gap formed between the peripheral edge of the base and the edge of the shell is approximately perpendicular to the inner surfaces adjoining the gap Extends mantle and bottom. In this known machine, however, the inner surfaces of the jacket and base in the area of the gap are not oriented obliquely but essentially parallel to the axis of rotation of the base. The gap also does not extend at an angle between 30 ° and 90 °, but perpendicular to this axis of rotation. As a result, there is also a relatively rapid abrasion of the inner lining in the area of the gap in this machine and thus a relatively short service life. Added to this is the fact that in this machine the inner surface of the jacket is not arched axially through the container to the inner surface of the bottom. Due to the vertical alignment of the inner lining with the centrifugal force energy of the workpieces in the area of the gap in this machine, they lose their centrifugal force energy before the gap is reached during operation of the machine, in which they are driven upwards by their centrifugal force energy at the edge of the container, which leads to this that they last longer in the critical area of the gap the inner lining remain on both sides of the gap and there lead to a locally very strong and rapid abrasion.

Vorteilhafte weitere Ausgestaltungen der erfindungsgemäßen Fliehkraftbearbeitungsmaschine ergeben sich aus den Ansprüchen 2 bis 7.Advantageous further refinements of the centrifugal processing machine according to the invention result from claims 2 to 7.

Durch die knicklose Wölbung oder die kugelsegmentförmige Ausbildung der Innenfläche des Mantels wird ein Hängenbleiben von zu bearbeitenden Werkstücken und Behandlungskörpern in bestimmten Bereichen der Innenfläche mit der Folge eines vermehrten Abriebes in diesen Bereichen vermieden. Außerdem wird dadurch eine gleichmäßigere Bearbeitung sämtlicher gleichzeitig im Behälter zu bearbeitender Werkstücke gewährleistet.The kinkless curvature or the spherical segment-shaped design of the inner surface of the jacket prevents workpieces and treatment bodies to be machined from sticking in certain areas of the inner surface, with the result of increased abrasion in these areas. This also ensures a more uniform processing of all workpieces to be processed simultaneously in the container.

Auch die Einstellbarkeit der Weite des zwischen dem Umfangsrand des Behälterbodens und dem Behältermantel befindlichen Spaltes über den gesamten Behälterumfang durch Heben und Senken des Mantels gegenüber seiner Trageinrichtung dient dazu, den Abrieb an den Spaltwänden möglichst gering zu halten. Sie ist auch im Hinblick auf die in gewissen Toleranzen unvermeidlichen Fertigungsungenauigkeiten an den Spaltwänden zweckmäßig.The adjustability of the width of the gap between the circumferential edge of the container bottom and the container casing over the entire container circumference by lifting and lowering the casing relative to its supporting device also serves to keep the abrasion on the gap walls as low as possible. It is also expedient in view of the manufacturing inaccuracies on the gap walls which are inevitable within certain tolerances.

In der Zeichnung sind drei vorteilhafte Ausführungsbeispiele der erfindungsgemäßen Maschine dargestellt, die im folgenden näher beschrieben werden:

Fig. 1
zeigt das erste Ausführungsbeispiel im Axialschnitt durch den Werkstückaufnahmebehälter und seine Trag- und Antriebseinrichtung.
Fig. 2
veranschaulicht das zweite Ausführungsbeispiel in gleicher Darstellungsweise wie dasjenige gemäß Fig. 1.
The drawing shows three advantageous exemplary embodiments of the machine according to the invention, which are described in more detail below:
Fig. 1
shows the first embodiment in axial section through the workpiece holder and its support and drive device.
Fig. 2
illustrates the second embodiment in the same representation as that according to FIG. 1.

Bei den beiden dargestellten Ausführungsbeispielen ist der Werkstückaufnahmebehälter von einem oberen zylindrischen Mantel 1 und einem unteren, zu diesem koaxial gelagerten rotierenden tellerförmigen Boden 2 gebildet, der mit seinem Umfangsrand an den unteren Rand des Mantels heranragt. Der zylindrische Mantel 1 ruht an seinem unteren Rand auf dem oberen Mantelrand eines darunter befindlichen Tragbehälters 3, der undrehbar auf einem Träger 4 o.dgl. Basis gelagert ist. Der Boden 2 des Werkstückaufnahmebehälters sitzt auf einer senkrechten Welle 5, welche drehbar in der Lagerung 6 des Tragbehälters 3 sitzt. Über die Drehwelle wird der Boden 2 durch ein Antriebsrad 7 in Drehung versetzt.In the two illustrated exemplary embodiments, the workpiece receiving container is formed by an upper cylindrical shell 1 and a lower, rotating plate-shaped base 2 which is mounted coaxially thereto and which projects with its peripheral edge onto the lower edge of the shell. The cylindrical jacket 1 rests at its lower edge on the upper jacket edge of a carrier 3 located underneath, which is non-rotatable on a carrier 4 or the like. Base is stored. The bottom 2 of the workpiece receptacle sits on a vertical shaft 5, which is rotatably seated in the bearing 6 of the carrying container 3. The base 2 is rotated by a drive wheel 7 via the rotary shaft.

Der zylindrische Behältermantel 1 ist mit einer Innenauskleidung 8 aus Kunststoff versehen, an deren verdicktem unteren Rand der ebenfalls aus Kunststoff bestehende Behälterboden 2 unter Bildung eines engen Spaltes 9 heranragt, der sich in einem Winkel von etwa 60° zur Achse 10 des Behälters und der Welle 5 erstreckt, um beiderseits des Spaltes keine spitzen Kanten an der Innenauskleidung des Mantels und dem Rand des Bodens zu erhalten. Die damit gegebene, relativ geringe Neigung des Spaltes 9 gegenüber der Horizontalen ist für die nachstehend erläuterte Einstellung der Spaltweite, die durch Vertikalbewegung des Mantels 1 des Werkstückaufnahmebehälters gegenüber dessen Boden 2 erfolgt, zweckmäßig.The cylindrical container jacket 1 is provided with an inner lining 8 made of plastic, on the thickened lower edge of which the container base 2, which is also made of plastic, protrudes to form a narrow gap 9 which is at an angle of approximately 60 ° to the axis 10 of the container and the shaft 5 extends in order not to get any sharp edges on the inner lining of the casing and the edge of the bottom on both sides of the gap. The resulting, relatively small inclination of the gap 9 with respect to the horizontal is expedient for the setting of the gap width, which is explained below, and which takes place by vertical movement of the jacket 1 of the workpiece holding container relative to its base 2.

Am unteren Rand des Mantels 1 des Werkstückaufnahmebehälters ist ein radial über die Außenfläche des Mantels hinausragender Flansch 11 befestigt, der sich um den gesamten Behälterumfang herumerstreckt. Mit diesem Flansch 11 ruht der Mantel 1 des Bearbeitungsbehälters auf einem Gegenflansch 13 auf, der am oberen Mantelrand des Tragbehälters festgeschweißt ist, und zwar über einen zwischen den beiden Flanschen befindlichen Ring 12 aus federelastischem Material. Zur Befestigung des Mantels 8 auf den Tragbehälter 3 sind in den Flanschen Befestigungsschrauben 14 vorgesehen. Durch stärkeres oder schwächeres Anziehen der Befestigungsschrauben 14 kann unter Zusammendrückung oder Aufweitung des Ringes 12 eine Einstellung der Weite des Spaltes 9 erfolgen. Diese Einstellmöglichkeit ist auch im Hinblick auf die in gewissen Toleranzen unvermeidlichen Fertigungsungenauigkeiten an den beiden Rändern des Mantels 8 zweckmäßig. Da der Werkstückaufnahmebehälter zur Bearbeitung der in ihn einzugebenden Werkstücke in der Regel mit einer Behandlungsflüssigkeit gefüllt wird, kann der Ring 12 auch zur dabei notwendigen Abdichtung zwischen den beiden einander gegenüberliegenden Flanschen 11 und 13 dienen.At the lower edge of the jacket 1 of the workpiece receiving container, a flange 11 is attached which extends radially beyond the outer surface of the jacket and extends around the entire circumference of the container. With this flange 11, the jacket 1 of the processing container rests on a counter flange 13 which is welded to the upper jacket edge of the carrier, via a ring 12 made of resilient material located between the two flanges. Fixing screws 14 are provided in the flanges for fastening the jacket 8 to the carrying container 3. By tightening the fastening screws 14 more or less, the width of the gap 9 can be adjusted while compressing or widening the ring 12. This setting option is also useful in view of the inevitable manufacturing inaccuracies on the two edges of the jacket 8 in certain tolerances. Since the workpiece receptacle is usually filled with a treatment liquid for processing the workpieces to be inserted into it, the ring 12 can also serve for the necessary sealing between the two flanges 11 and 13 located opposite one another.

Der Mantel 1 des Werkstückaufnahmebehälters ist in bezug auf seine sich senkrecht zur Achse 10 erstreckende Mittelebene 16 symmetrisch ausgebildet und geformt. Seine Innenauskleidung 8 verdickt sich gleichermaßen zu seinem oberen Rand und zu seinem unteren Rand, wie auch der obere Rand mit Flansch 11 und Bohrungen für die Aufnahme von Schrauben 17 ausgebildet ist wie der untere Rand. Mittels der Schrauben 17 ist auf dem oberen Mantelrand ein Schutzring 18 befestigt, der beim Ein- und Ausbringen von Werkstücken, Bearbeitungskörpern u.dgl. in bzw. aus dem Werkstückaufnahmebehälter eine Beschädigung der oberen Kante der Innenauskleidung 8 verhindern soll.The jacket 1 of the workpiece holder is formed and shaped symmetrically with respect to its central plane 16 extending perpendicular to the axis 10. Its inner lining 8 thickens equally to its upper edge and to its lower edge, just as the upper edge is designed with a flange 11 and bores for receiving screws 17 like the lower edge. By means of the screws 17, a protective ring 18 is fastened on the upper edge of the casing, and the like when inserting and removing workpieces, machining bodies and the like. in or from the workpiece holder to prevent damage to the upper edge of the inner liner 8.

Der Behältermantel 1 kann aufgrund seiner vorbeschriebenen und in der Zeichnung dargestellten symmetrischen Ausbildung und Anordnung umgestürzt werden. Dies ist dann zweckmäßig, wenn der Behältermantel einseitig an seiner Innenfläche abgerieben worden ist. Bei Weiterverwendung des Behältermantels in umgestürzter Lage kann sich die Einsatzzeit des Behältermantels verdoppeln oder nahezu verdoppeln.The container jacket 1 can be overturned due to its symmetrical design and arrangement described above and shown in the drawing. This is useful if the container jacket has been rubbed on one side of its inner surface. If you continue to use the container casing in an overturned position, the usage time of the container casing can double or almost double.

Zur Vereinfachung der Herstellung des Mantels 1 des Werkstückaufnahmebehälters in der genannten symmetrischen Form ist dieser Mantel in seiner sich senkrecht zur Mantelachse 10 erstreckenden Mittelebene 16 in zwei gleiche Teile 18, 19 getrennt, die miteinander über radial abstehende Flansche 20, 21 durch Schrauben 22 aneinander befestigt sind. Zum Umstürzen des zweiteilig ausgebildeten Mantels 1 des Werkstückaufnahmebehälters bedarf es lediglich der Entfernung des Schutzringes 18 mit den Befestigungsschrauben 17 am oberen Mantelrand und des Lösens bzw. Entfernens der Befestigungsschrauben 14 am unteren Mantelrand. Hierauf kann der Mantel gestürzt mit seinem vorherigen oberen Mantelrand nach unten gekehrt auf den Flansch 13 des Tragbehälters 3 aufgesetzt und mit den Befestigungsschrauben 14 am Tragbehälter befestigt werden.To simplify the manufacture of the jacket 1 of the workpiece holder in the symmetrical shape mentioned, this jacket is divided into two identical parts 18, 19 in its central plane 16, which extends perpendicular to the jacket axis 10 and which are fastened to one another by means of screws 22 via radially projecting flanges 20, 21 are. To overturn the two-part jacket 1 of the workpiece receptacle, all that is required is to remove the protective ring 18 with the fastening screws 17 on the upper jacket edge and to loosen or remove the fastening screws 14 at the lower jacket edge. The jacket can then be placed with its previous upper jacket edge turned down onto the flange 13 of the carrying container 3 and fastened to the carrying container with the fastening screws 14.

Bei dem in Fig. 1 dargestellten Ausführungsbeispiel ist die Innenauskleidung 8 so gestaltet, daß sie sich von der Mittelebene 16 des Mantels ausgehend in dem in Fig. 1 gezeigten Axialschnitt durch den Mantel mit ihrer Innenfläche zunächst geradlinig, parallel zur Außenfläche des Mantels 1 erstreckt, um unter Bildung einer Randverdickung unter Abknickung in eine Schräge überzugehen, wodurch sich die Innenauskleidung zu den Mantelrändern hin verdickt. Hierdurch wird erreicht, daß die an den Spalt 9 angrenzende Schräge der Innenfläche des Mantels 1 etwa im gleichen Winkel zur Spalttiefe sich erstreckt wie die Innenfläche des Bodens 2.In the embodiment shown in Fig. 1, the inner lining 8 is designed so that it starts from the central plane 16 of the jacket in the axial section shown in Fig. 1 through the jacket with its inner surface initially straight, parallel to the outer surface of the jacket 1 extends in order to form an edge thickening with a bend in a slope, whereby the inner lining thickens towards the jacket edges. It is hereby achieved that the slope of the inner surface of the casing 1 adjoining the gap 9 extends at approximately the same angle to the gap depth as the inner surface of the base 2.

Da an jeder Knickung der Innenfläche von Mantel und Boden des Werkstückaufnahmebehälters ein erhöhter Abrieb entsteht und der Werkstückfluß innerhalb des Behälters bei Betrieb der Maschine beeinträchtigt wird, ist es zweckmäßig, die Innenauskleidung von Mantel und Boden möglichst knicklos auszubilden und auch die Innenfläche des Mantels knicklos an die Innenfläche des Bodens im Bereich des Spaltes 9 anzuschließen.Since there is increased abrasion at each kink of the inner surface of the jacket and bottom of the workpiece holder and the workpiece flow within the tank is impaired when the machine is in operation, it is expedient to design the inner lining of the jacket and bottom as little as possible and also to make the inner surface of the jacket kinkless to connect the inner surface of the bottom in the area of the gap 9.

Bei dem in Fig. 2 dargestellten Ausführungsbeispiel ist dies in optimaler Weise der Fall. Dieses Ausführungsbeispiel unterscheidet sich von demjenigen gemäß Fig. 1 nur durch die Form der Innenauskleidung des Mantels 1 und der Innenfläche des Bodens 2. Alle Teile gleicher Gestalt sind daher mit den gleichen Bezugsziffern wie in Fig. 1 versehen. Die Innenfläche der Innenauskleidung 8 des Werkstückaufnahmebehälters besitzt bei diesem Ausführungsbeispiel Kugelsegmentform, wobei sich diese Innenfläche knicklos an die Innenfläche des Bodens 2 im Bereich des Spaltes 9 anschließt. Hierdurch ergibt sich mit Ausnahme des zentralen Bodenbereichs eine Innenfläche von Mantel und Boden des Werkstückaufnahmebehälters, die keinerlei Knicke hat, welche den Bewegungsablauf der Werkstücke und Behandlungskörper im Werkstückaufnahmebehälter behindern und zu stellenweise erhöhtem Abrieb der Innenflächen führen könnten. Dabei ist ebenso wie beim Ausführungsbeispiel gemäß Fig. 1 ein Überhängen der Innenauskleidung 8 im Bereich des oberen Randes des Mantels 1 gegeben, der das Zurückführen des an der Mantelauskleidung hochwandernden Behälterinhalts in den zentralen Bereich des Behälters fördert.In the exemplary embodiment shown in FIG. 2, this is the case in an optimal manner. This embodiment differs from that according to FIG. 1 only by the shape of the inner lining of the casing 1 and the inner surface of the bottom 2. All parts of the same shape are therefore provided with the same reference numbers as in FIG. 1. In this exemplary embodiment, the inner surface of the inner lining 8 of the workpiece holder has a spherical segment shape, this inner surface adjoining the inner surface of the base 2 in the region of the gap 9 without kinks. With the exception of the central floor area, this results in an inner surface of the jacket and bottom of the workpiece holder which has no kinks which hinder the movement of the workpieces and treatment bodies in the workpiece holder and in some cases increased wear of the inner surfaces could lead. As in the exemplary embodiment according to FIG. 1, there is an overhang of the inner lining 8 in the region of the upper edge of the jacket 1, which promotes the return of the container contents migrating up the jacket lining into the central region of the container.

Claims (7)

  1. A centrifugal processing machine for mechanical processing, e.g. grinding, polishing, cleaning and deburring of workpieces, with a workpiece receiving container which comprises a substantially stationary, cylindrical casing (1) and a rotating base (2), which is mounted coaxially with said casing (1), has the form of a dish or the like, and at its circumferential edge projects towards the casing so as to form an intervening gap (9), wherein, in an axial section through the container, the inner surface of the casing (1) is curved towards or weakly bent towards the inner surface of the base (2) in such manner that it adjoins the inner surface of the base substantially without bends, characterised in that
    a) the gap (9) formed between the circumferential edge of the base (2) and the casing (1) extends approximately at right angles to the inner surfaces of the casing and base which adjoin the gap and
    b) in the region of the gap (9) the inner surfaces of the casing and base are obliquely positioned with respect to the axis of rotation (10) of the base in such manner that the gap, which is formed at right angles to these inner surfaces, extends at an angle of between 30° and 90° to the said axis of rotation (10).
  2. A machine as claimed in Claim 1, characterised in that in the region of the gap (9) the inner surfaces of the casing (1) and the base (2) of the container are obliquely positioned with respect to the axis of rotation (10) of the base in such manner that the gap, which is formed at right angles to these inner surfaces, extends at an angle of approximately 60° to the said axis of rotation (10).
  3. A machine as claimed in Claim 1, characterised in that the entire inner surface of the casing (1) is curved without bends.
  4. A machine as claimed in Claim 2, characterised in that the inner surface of the casing (1) has the form of a spherical segment.
  5. A machine as claimed in Claim 1, characterised in that in its region adjoining the gap (9), the inner surface of the container base (2) is formed without bends.
  6. A machine as claimed in Claim 1, characterised in that the width of the narrow gap (9), formed between the circumferential edge of the base (2) and the casing (1) of the workpiece receiving container, is uniformly adjustable along the entire periphery of the container by raising and lowering the casing with respect to the supporting device (3).
  7. A machine as claimed in Claim 6, characterised in that the gap is adjusted by means of an elastic sealing element (12) which rests between the casing (1) and the supporting device (3) and which is compressed by tensioning elements, such as screws (14) or the like.
EP86117764A 1986-02-14 1986-12-19 Centrifugal polishing machine Expired - Lifetime EP0232531B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863604619 DE3604619A1 (en) 1986-02-14 1986-02-14 CENTRIFUGAL MACHINE
DE3604619 1986-02-14

Publications (3)

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EP0232531A2 EP0232531A2 (en) 1987-08-19
EP0232531A3 EP0232531A3 (en) 1988-11-09
EP0232531B1 true EP0232531B1 (en) 1992-07-15

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EP86117764A Expired - Lifetime EP0232531B1 (en) 1986-02-14 1986-12-19 Centrifugal polishing machine

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US (1) US4850151A (en)
EP (1) EP0232531B1 (en)
DE (2) DE3604619A1 (en)

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Also Published As

Publication number Publication date
EP0232531A3 (en) 1988-11-09
DE3604619A1 (en) 1987-08-20
EP0232531A2 (en) 1987-08-19
US4850151A (en) 1989-07-25
DE3686046D1 (en) 1992-08-20

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