EP1184132B1 - Method and apparatus for grinding workpieces - Google Patents
Method and apparatus for grinding workpieces Download PDFInfo
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- EP1184132B1 EP1184132B1 EP01120995A EP01120995A EP1184132B1 EP 1184132 B1 EP1184132 B1 EP 1184132B1 EP 01120995 A EP01120995 A EP 01120995A EP 01120995 A EP01120995 A EP 01120995A EP 1184132 B1 EP1184132 B1 EP 1184132B1
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- Prior art keywords
- container
- grinding
- workpiece
- lifting
- grinding material
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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
- B24B31/06—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 oscillating or vibrating containers
- B24B31/064—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 oscillating or vibrating containers the workpieces being fitted on a support
Definitions
- the present invention relates to a grinding device for grinding Workpieces with a frame or a housing and at least one workpiece holder arranged within the frame or the housing for holding at least one workpiece, the workpiece holder is rotatable and slidable and the workpiece holder with the Partially or completely into a workpiece by means of a lifting and lowering device open or at least partially closable abrasive container with abrasive is retractable and the abrasive container for at least one air supply nozzle Has generation of an air flow within the container, being on the abrasive container a vibration exciter is arranged, see e.g. US 4,916,865.
- the present invention further relates to a method for grinding Workpieces.
- Known grinders and methods typically use a fixed one Abrasive ground such.
- a disadvantage of these fixed grinding reasons, however, is that in particular Profiled workpieces can only be ground with a lot of work.
- the size and profile of the grinding wheel must match the respective Workpieces are adjusted, which also results in high costs.
- No. 4,916,865 describes a device for the surface treatment of a workpiece described, which can be used as a grinding device and a container with has a means for surface treatment of a workpiece.
- a to treat introduced tools are air supply nozzles and a Vibrator is provided on the container, causing the agent to move brought and can serve the treatment.
- the workpiece to be treated is also in during the treatment process by the movement of the agent transported in one direction, this transport being carried out at certain intervals a workpiece holder is interrupted to achieve the treatment result improve.
- DD 47 309 describes a method for deburring, edge rounding and Polishing predominantly of rotationally symmetrical or rotationally similar parts known metallic materials, in which by at least one to the left and right movable spindle at least one workpiece in a vibrating grinding medium is managed and processed. From DE 1 167 689 there is also a grinding device known. The workpiece to be machined becomes movable within one a grinding liquid filled container arranged. The grinding fluid is through Compressed air coming out of nozzles fixed in the walls of the container, swirled.
- a disadvantage of this type of surface grinding machines is that on the one hand only relatively small workpieces can be machined and on the other hand it always has to mechanical disturbances in the area between the rim of the plate and the container wall comes.
- such surface grinding machines are not suitable, larger and profiled workpieces such as B. window frames, door frames and the like, too to edit.
- a grinding device In a grinding device according to the invention is on an abrasive container and a vibration exciter is arranged in each case, the Frequencies of the vibration exciter adjustable between 10 and 100 Hz the vibrations generated are directed in opposite directions.
- the vibration amplitude is between 0.5 mm and 4.5 mm.
- the air flow generated within the container generates an air supply nozzle Turbulence of the abrasive within the container and on the other hand will the abrasive is advantageously pressed against the workpiece surface with pressure or directed to the workpiece surface.
- the air flow is advantageously with a pressure between 0.5 and 10 bar introduced into the abrasive housing.
- the Vibration exciters advantageously each produce an adjustable one Acceleration from 1.0 to 4 g. The best can be found in this area Achieve work results.
- the workpiece holder with the workpiece by means of the lifting and Lowering device removed from or out of the abrasive container lifted.
- the grinding device according to the invention is also advantageous because of its Construction extremely insensitive to mechanical stress.
- the air supply nozzle (s) with air guiding devices arranged inside the container connected to generate a directed air flow.
- Generating a directional airflow it is possible to keep the pressure within to control the abrasive container and, if necessary, to vary it.
- the latter can also be achieved by that the air is arranged in the area of a bottom of the container Air supply nozzles is introduced into the container.
- this can be the Abrasive that collects on the bottom of the container can be loosened. Also guaranteed such an arrangement of the air supply nozzles that the grinding dust of the workpiece is transported to the container surface.
- the container is mounted flat. This allows the overall height of the grinding device advantageously be kept low.
- the inventive method for grinding workpieces uses a Grinding device according to the invention and has the following steps: (a) clamping a workpiece in a rotatable workpiece holder; (b) lowering and partial or complete retraction of the workpiece holder by means of a lifting and Lowering device into an abrasive container; (c) Introducing an airflow over Air supply nozzles in the abrasive container and moving the abrasive container and the workpiece holder in opposite vibrations Swirling the abrasive disposed within the container; (d) turning and / or lifting and lowering the workpiece holder with the complete or workpiece partially surrounded by abrasive; and (e) removing or Lift the workpiece holder with the workpiece out of the Abrasive container.
- Figure 1 shows a schematic representation of a grinding device 10 according to a first embodiment with a frame 12 and one within the Rack frame 12 arranged workpiece holder 16 for holding a Workpiece 18.
- the workpiece 18 is a profiled in the exemplary embodiment Window frames.
- the workpiece holder 16 is rotatably supported, the Rotation is generated by a rotating device 20. It can be seen that the Workpiece holder 16 consisting of a lifting and lowering device 22 two lifting spindles 24, 26.
- the workpiece holder 16 is partially or completely into an at least partially closable abrasive container 14 retracted.
- a container cover 28 has a corresponding opening 30 on.
- the abrasive medium container 14 has two air supply nozzles 32, 34 for generating an air flow within the container 14, the Air supply nozzles 32, 34 also arranged inside the container 14 Air guiding devices 36, 38 are connected in an air-guiding manner.
- the air guiding devices 36, 38 extend from the container cover 28 to a container base 40.
- the air flow is at a pressure between 0.5 and 10 bar in the Abrasive housing 14 initiated.
- the container 14 also has suitable Air release devices on.
- a vibration exciter 42 is located on the container bottom 40 of the abrasive agent container 14 arranged. Between a support element 50 - usually a concrete base - and Vibration decouplers 46 are arranged in the tank bottom 40. The Support element 50 is mounted on vibration dampers 48. The workpiece holder 16 is also connected to a vibration exciter 52 (see FIG. 2). The frequencies the vibration exciters 42, 52 are each adjustable between 10 and 100 Hz are opposite. The vibration amplitude is between 0.5 mm and 4.5 mm. In addition, the vibration exciters 42, 52 each generate an adjustable one Acceleration from 1.0 to 4 g.
- the abrasive usually consists of slag, quartz sand, basalt pieces or Corundum or a mixture thereof, the grain size of the abrasive being less than 2 mm is. But it is also conceivable that other abrasive, liquid or solid abrasives be used.
- Figure 2 shows a schematic side view of the grinding device 10. Man recognizes that the vibration exciter 42 with an electric motor 44 for Vibration generation is connected and that the workpiece holder 16 with the second vibration exciter 52 is coupled.
- FIG. 3 shows a grinding device 10 according to FIG a second first embodiment. It can be seen that the container 14 lies flat is mounted. In addition, the air is in the region of the bottom 40 of the container 14 arranged air supply nozzles 54 introduced into the container 14. It becomes clear that the container 14 and the lifting and lowering device 22 against vibration the frame or the housing 12 and against the support member 50 on which the Grinding device 10 is arranged, are decoupled. There are vibration dampers for this 46 between the container 14 and the support member 50 and vibration damper 56 between the lifting and lowering device 22 and vibration damper 48 for Storage of the support member 50 is formed.
- the lifting and lowering device 22 a receiving device 58 for attaching the Has workpiece holder 16.
- the lifting movement takes place by means of a Cradle 58 correspondingly attached wire rope 62, several Deflection rollers 64 for the wire rope 62 and a lifting cylinder 60. So both sides of the workpiece 18 can be processed, the lifting and lowering device 22 and / or the workpiece holder can be rotated by 180 °.
- vibration parameters of the vibration exciters 42, 52 correspond to the Parameters according to the embodiment described in Figures 1 and 2.
Abstract
Description
Die vorliegende Erfindung bezieht sich auf eine Schleifvorrichtung zum Schleifen von Werkstücken mit einem Gestellrahmen oder einem Gehäuse und mindestens einer innerhalb des Gestellrahmens oder des Gehäuses angeordneten Werkstückhalterung zur Halterung von mindestens einem Werkstück, wobei die Werkstückhalterung drehbar und verschiebbar ausgebildet ist und die Werkstückhalterung mit dem Werkstück mittels einer Hebe- und Senkvorrichtung teilweise oder vollständig in einen offenen oder zumindest teilweise verschließbaren Schleifmittelbehälter mit Schleifmittel einfahrbar ist und der Schleifmittelbehälter mindestens eine Luftzuführdüse zur Erzeugung eines Luftstroms innerhalb des Behälters aufweist, wobei an dem Schleifmittelbehälter ein Schwingungserreger angeordnet ist, siehe z.B. US 4,916,865.The present invention relates to a grinding device for grinding Workpieces with a frame or a housing and at least one workpiece holder arranged within the frame or the housing for holding at least one workpiece, the workpiece holder is rotatable and slidable and the workpiece holder with the Partially or completely into a workpiece by means of a lifting and lowering device open or at least partially closable abrasive container with abrasive is retractable and the abrasive container for at least one air supply nozzle Has generation of an air flow within the container, being on the abrasive container a vibration exciter is arranged, see e.g. US 4,916,865.
Die vorliegende Erfindung bezieht sich weiterhin auf ein Verfahren zum Schleifen von Werkstücken.The present invention further relates to a method for grinding Workpieces.
Bekannte Schleifvorrichtungen und -verfahren verwenden üblicherweise einen festen Schleifgrund, wie z. B. Schleifscheiben, Schleifbänder oder andere feste und profilierte Schleifkörper. Nachteilig an diesen festen Schleifgründen ist jedoch, daß insbesondere profilierte Werkstücke nur mit einem hohen Arbeitsaufwand geschliffen werden können. Zudem muss die Größe und Profilierung des Schleifkörpers den jeweiligen Werkstücken angepasst werden, wodurch ebenfalls hohe Kosten entstehen. Known grinders and methods typically use a fixed one Abrasive ground such. B. grinding wheels, sanding belts or other fixed and profiled Abrasives. A disadvantage of these fixed grinding reasons, however, is that in particular Profiled workpieces can only be ground with a lot of work. In addition, the size and profile of the grinding wheel must match the respective Workpieces are adjusted, which also results in high costs.
Ein weiterer Nachteil von Schleifvorrichtungen mit festen Schleifgründen ist, daß diese üblicherweise nicht geeignet sind, Oberflächen eines Hohlraumes eines Werkstücks zu bearbeiten. Für diesen speziellen Anwendungsbereich, aber auch zur Feinbearbeitung von Werkstückoberflächen allgemein, insbesondere zum Entgraten und Verrunden von innenliegenden Kanten und Verschneidungen sind sogenannte Strömungsschleifverfahren oder Fliehkraft-Gleitschleifverfahren vorgeschlagen worden, die mit flüssigen oder körnigen Schleifmitteln arbeiten. So beschreibt die DE 197 28 931 A1 eine Fliehkraft-Gleitschleifmaschine mit einem Behälter zur Aufnahme von Gleitschleifkörpern und den zu bearbeitenden Werkstücken. Der Behälter weist dabei einen etwa kreisförmigen Grundriss mit feststehender Seitenwand und mit einem im Bodenbereich rotierenden Teller zur Erzielung einer wendelförmigen Umwälzbewegung des sich oberhalb des Tellers befindlichen Behälterinhalts auf.Another disadvantage of grinding devices with fixed grinding grounds is that are usually not suitable for closing surfaces of a cavity of a workpiece to edit. For this special area of application, but also for fine machining of workpiece surfaces in general, in particular for deburring and rounding internal edges and intersections are so-called flow grinding processes or centrifugal vibratory grinding with liquid or granular abrasives. DE 197 28 931 A1 describes one of them Centrifugal vibratory grinding machine with a container for holding grinding wheels and the workpieces to be machined. The container has one approximately circular floor plan with a fixed side wall and with an im Bottom area rotating plate to achieve a helical circulation of the container contents located above the plate.
In der US 4,916,865 ist eine Vorrichtung zur Oberflächenbehandlung eines Werkstücks beschrieben, die als Schleifvorrichtung eingesetzt werden kann und einen Behälter mit einem Mittel zur Oberflächenbehandlung eines Werkstücks aufweist. Um ein eingebrachtes Werkzeug zu behandeln, sind Luftzuführdüsen und ein Schwingungserreger an dem Behälter vorgesehen, wodurch das Mittel in Bewegung gebracht wird und so der Behandlung dienen kann. Das zu behandelnde Werkstück wird während des Behandlungsprozesses durch die Bewegung des Mittels ebenfalls in eine Richtung transportiert, wobei dieser Transport in bestimmten Abständen durch eine Werkstückhalterung unterbrochen wird, um das Behandlungsergebnis zu verbessern.No. 4,916,865 describes a device for the surface treatment of a workpiece described, which can be used as a grinding device and a container with has a means for surface treatment of a workpiece. To a to treat introduced tools are air supply nozzles and a Vibrator is provided on the container, causing the agent to move brought and can serve the treatment. The workpiece to be treated is also in during the treatment process by the movement of the agent transported in one direction, this transport being carried out at certain intervals a workpiece holder is interrupted to achieve the treatment result improve.
Aus der DD 47 309 ist ein Verfahren zur Entgratung, Kantenverrundung und zum Polieren von rotationssymmetrischen oder rotationsähnlichen Teilen aus vorwiegend metallischen Werkstoffen bekannt, bei dem durch mindestens eine nach links und rechts bewegbare Spindel mindestens ein Werkstück in ein vibrierendes Schleifmedium geführt und bearbeitet wird. Auch aus der DE 1 167 689 ist eine Schleifvorrichtung bekannt. Dabei wird das zu bearbeitende Werkstück beweglich innerhalb eines mit einer Schleifflüssigkeit gefüllten Behälters angeordnet. Die Schleifflüssigkeit wird durch Druckluft, die aus in den Wandungen des Behälters fest eingesetzten Düsen tritt, verwirbelt. DD 47 309 describes a method for deburring, edge rounding and Polishing predominantly of rotationally symmetrical or rotationally similar parts known metallic materials, in which by at least one to the left and right movable spindle at least one workpiece in a vibrating grinding medium is managed and processed. From DE 1 167 689 there is also a grinding device known. The workpiece to be machined becomes movable within one a grinding liquid filled container arranged. The grinding fluid is through Compressed air coming out of nozzles fixed in the walls of the container, swirled.
Nachteilig an dieser Art von Gleitschleifmaschinen ist jedoch, daß einerseits nur relativ kleine Werkstücke bearbeitet werden können und es andererseits immer wieder zu mechanischen Störungen im Bereich zwischen Tellerrand und Behälterwandung kommt. Insbesondere sind derartige Gleitschleifmaschinen nicht geeignet, größere und profilierte Werkstücke wie z. B. Fensterrahmen, Türstöcke und ähnliches, zu bearbeiten.A disadvantage of this type of surface grinding machines, however, is that on the one hand only relatively small workpieces can be machined and on the other hand it always has to mechanical disturbances in the area between the rim of the plate and the container wall comes. In particular, such surface grinding machines are not suitable, larger and profiled workpieces such as B. window frames, door frames and the like, too to edit.
Es ist daher Aufgabe der vorliegenden Erfindung, eine gattungsgemäße Schleifvorrichtung und ein gattungsgemäßes Schleifverfahren bereitzustellen, welche die genannten Nachteile der bekannten Schleifvorrichtungen und -verfahren überwindet und eine schnelle und kostengünstige Bearbeitung von größeren und profilierten Werkstücken gewährleistet.It is therefore an object of the present invention, a generic To provide grinding device and a generic grinding method, which overcomes the disadvantages of the known grinding devices and methods and quick and inexpensive machining of larger and profiled ones Workpieces guaranteed.
Gelöst wird diese Aufgabe durch eine gattungsgemäße Schleifvorrichtung und ein gattungsgemäßes Schleifverfahren mit den Merkmalen der unabhängigen Ansprüche.This task is solved by a generic grinding device and a Generic grinding method with the features of the independent claims.
Vorteilhafte Ausgestaltungen sind in den Unteransprüchen beschrieben.Advantageous refinements are described in the subclaims.
Bei einer erfindungsgemäßen Schleifvorrichtung ist an einem Schleifmittelbehälter und einer Werkstückhalterung jeweils ein Schwingungserreger angeordnet, wobei die Frequenzen der Schwingungserreger jeweils zwischen 10 und 100 Hz einstellbar und die jeweils erzeugten Schwingungen entgegengerichtet sind. Die Schwingungsamplitude liegt zwischen 0,5 mm und 4,5 mm. Durch die erfindungsgemäße Wahl der Schwingungsparameter sowie die Anordnung von jeweils einem Schwingungserreger an der Werkstückhalterung sowie dem Schleifmittelbehälter wird die gewünschte Schleifwirkung schnell und einfach erzielt. Durch die entgegengerichteten Schwingungen des Schleifmittelbehälters und der Werkstückhalterung ist eine deutliche Verwirbelung des Schleifmittels innerhalb des Behälters gewährleistet. Dies führt zu einer gleichmäßigen Schleifwirkung. Des weiteren ist gewährleistet, daß Werkstücke unterschiedlichster Größe und Form schnell und kostengünstig bearbeitet werden können. Durch eine Drehung der Werkstückhalterung und/oder der Hebe- und Senkvorrichtung und damit des Werkstücks selbst ist ein gleichmäßiger Abrieb an der gesamten, von Schleifmittel umgebenen Werkstückoberfläche gewährleistet. Der durch die Luftzuführdüsen erzeugte Luftstrom innerhalb des Behälters erzeugt einerseits eine Verwirbelung des Schleifmittels innerhalb des Behälters und andererseits wird dadurch das Schleifmittel vorteilhafterweise mit Druck gegen die Werkstückoberfläche gepresst bzw. an die Werkstückoberfläche geleitet. Der Luftstrom wird vorteilhafterweise mit einem Druck zwischen 0,5 und 10 bar in das Schleifmittelgehäuse eingeleitet. Die Schwingungserreger erzeugen vorteilhafterweise jeweils eine einstellbare Beschleunigung von 1,0 bis 4 g. In diesem Bereich lassen sich die besten Arbeitsergebnisse erzielen. Sobald das gewünschte Arbeitsergebnis erreicht worden ist, wird die Werkstückhalterung mit dem Werkstück mittels der Hebe- und Senkvorrichtung aus dem Schleifmittelbehälter entfernt bzw. aus diesem herausgehoben. Durch die Veränderung der Schwingungsparameter innerhalb der erfindungsgemäßen Bereiche und der Verweildauer des Werkstücks innerhalb des Behälters ist es möglich, die gewünschte Schleifwirkung von z.B. minimal glättend bis stark abtragend einzustellen.In a grinding device according to the invention is on an abrasive container and a vibration exciter is arranged in each case, the Frequencies of the vibration exciter adjustable between 10 and 100 Hz the vibrations generated are directed in opposite directions. The vibration amplitude is between 0.5 mm and 4.5 mm. By the choice of the invention Vibration parameters and the arrangement of one vibration exciter the desired one on the workpiece holder and the abrasive container Grinding effect quickly and easily achieved. By the opposite Vibrations of the abrasive container and the workpiece holder are clear Swirling of the abrasive inside the container ensured. this leads to a uniform grinding effect. It also ensures that workpieces different sizes and shapes can be processed quickly and inexpensively can. By rotating the workpiece holder and / or the lifting and Lowering device and thus the workpiece itself is even abrasion on the entire workpiece surface surrounded by abrasives. The through on the one hand, the air flow generated within the container generates an air supply nozzle Turbulence of the abrasive within the container and on the other hand will the abrasive is advantageously pressed against the workpiece surface with pressure or directed to the workpiece surface. The air flow is advantageously with a pressure between 0.5 and 10 bar introduced into the abrasive housing. The Vibration exciters advantageously each produce an adjustable one Acceleration from 1.0 to 4 g. The best can be found in this area Achieve work results. As soon as the desired work result has been achieved is, the workpiece holder with the workpiece by means of the lifting and Lowering device removed from or out of the abrasive container lifted. By changing the vibration parameters within the areas according to the invention and the dwell time of the workpiece within the Container, it is possible to achieve the desired grinding effect of e.g. minimally smoothing up heavily abrasive.
Die erfindungsgemäße Schleifvorrichtung ist zudem aufgrund ihres vorteilhaften Aufbaus äußerst unempfindlich gegenüber mechanischer Beanspruchung.The grinding device according to the invention is also advantageous because of its Construction extremely insensitive to mechanical stress.
In einer vorteilhaften Ausgestaltung der erfindungsgemäßen Schleifvorrichtung ist bzw. sind die Luftzuführdüse(n) mit innerhalb des Behälters angeordneten Luftleitvorrichtungen zur Erzeugung eines gerichteten Luftstroms verbunden. Durch die Erzeugung eines gerichteten Luftstroms ist es möglich, die Druckverhältnisse innerhalb des Schleifmittelbehälters zu steuern und gegebenenfalls zu variieren. Zudem ist gewährleistet, daß das Behälterinnere während der Bearbeitung des Werkstücks vollständig mit Schleifmittel ausgefüllt ist. Letzteres kann auch dadurch erzielt werden, dass die Luft über im Bereich eines Bodens des Behälters angeordnete Luftzuführdüsen in den Behälter eingeleitet wird. Des weiteren kann so das sich am Behälterboden sich ansammelnde Schleifmittel gelockert werden. Auch gewährleistet eine derartige Anordnung der Luftzuführdüsen, daß der Schleifstaub des Werkstücks an die Behälteroberfläche transportiert wird.In an advantageous embodiment of the grinding device according to the invention, are the air supply nozzle (s) with air guiding devices arranged inside the container connected to generate a directed air flow. Through the Generating a directional airflow it is possible to keep the pressure within to control the abrasive container and, if necessary, to vary it. In addition is ensures that the interior of the container is in motion while the workpiece is being machined completely filled with abrasive. The latter can also be achieved by that the air is arranged in the area of a bottom of the container Air supply nozzles is introduced into the container. Furthermore, this can be the Abrasive that collects on the bottom of the container can be loosened. Also guaranteed such an arrangement of the air supply nozzles that the grinding dust of the workpiece is transported to the container surface.
In einer weiteren vorteilhaften Ausgestaltung der erfindungsgemäßen Schleifvorrichtung sind der Behälter und die Hebe- und Senkvorrichtung schwingungstechnisch gegen den Gestellrahmen bzw. das Gehäuse und gegen ein Stützelement, auf dem die Schleifvorrichtung angeordnet ist, entkoppelt.In a further advantageous embodiment of the grinding device according to the invention are the container and the lifting and lowering device against vibration the frame or the housing and against a support element on which the Grinding device is arranged, decoupled.
In einer weiteren vorteilhaften Ausgestaltung der erfindungsgemäßen Schleifvorrichtung ist der Behälter flachliegend montiert. Dadurch kann die Bauhöhe der Schleifvorrichtung vorteilhafterweise niedrig gehalten werden.In a further advantageous embodiment of the grinding device according to the invention the container is mounted flat. This allows the overall height of the grinding device advantageously be kept low.
Das erfindungsgemäße Verfahren zum Schleifen von Werkstücken verwendet eine erfindungsgemäße Schleifvorrichtung und weist folgende Schritte auf: (a) Einspannen eines Werkstücks in eine drehbar ausgebildete Werkstückhalterung; (b) Senken und teilweises oder vollständiges Einfahren der Werkstückhalterung mittels einer Hebe- und Senkvorrichtung in einen Schleifmittelbehälter; (c) Einleiten eines Luftstroms über Luftzuführdüsen in den Schleifmittelbehälter und Versetzen des Schleifmittelbehälters und der Werkstückhalterung in jeweils entgegengerichtete Schwingungen zur Verwirbelung des innerhalb des Behälters angeordneten Schleifmittels; (d) Drehen und/oder Heben und Senken der Werkstückhalterung mit dem vollständig oder teilweise von Schleifmittel umgebenem Werkstück; und (e) Entfernen bzw. Herausheben der Werkstückhalterung mit dem Werkstück aus dem Schleifmittelbehälter.The inventive method for grinding workpieces uses a Grinding device according to the invention and has the following steps: (a) clamping a workpiece in a rotatable workpiece holder; (b) lowering and partial or complete retraction of the workpiece holder by means of a lifting and Lowering device into an abrasive container; (c) Introducing an airflow over Air supply nozzles in the abrasive container and moving the abrasive container and the workpiece holder in opposite vibrations Swirling the abrasive disposed within the container; (d) turning and / or lifting and lowering the workpiece holder with the complete or workpiece partially surrounded by abrasive; and (e) removing or Lift the workpiece holder with the workpiece out of the Abrasive container.
Weitere Aufgaben, Vorteile und Merkmale der vorliegenden Erfindung ergeben sich aus den im folgenden beschriebenen und in den Zeichnungen dargestellten Ausführungsbeispielen.
- Figur 1
- ist eine schematische Darstellung der erfindungsgemäßen Schleifvorrichtung gemäß einer ersten Ausführungsform;
- Figur 2
- ist eine schematische Seitendarstellung der erfindungsgemäßen Schleifvorrichtung gemäß Figur 1; und
- Figur 3
- ist eine schematische Darstellung der erfindungsgemäßen Schleifvorrichtung gemäß einer zweiten Ausführungsform.
- Figure 1
- is a schematic representation of the grinding device according to the invention according to a first embodiment;
- Figure 2
- is a schematic side view of the grinding device according to the invention according to Figure 1; and
- Figure 3
- is a schematic representation of the grinding device according to the invention according to a second embodiment.
Figur 1 zeigt in einer schematischen Darstellung eine Schleifvorrichtung 10 gemäß
einer ersten Ausführungsform mit einem Gestellrahmen 12 und einer innerhalb des
Gestellrahmens 12 angeordneten Werkstückhalterung 16 zur Halterung eines
Werkstücks 18. Das Werkstück 18 ist in dem Ausführungsbeispiel ein profilierter
Fensterrahmen. Die Werkstückhalterung 16 ist dabei drehbar gelagert, wobei die
Drehung durch eine Drehvorrichtung 20 erzeugt wird. Man erkennt, daß die
Werkstückhalterung 16 mittels einer Hebe- und Senkvorrichtung 22 bestehend aus
zwei Hubspindeln 24, 26. Die Werkstückhalterung 16 ist dadurch teilweise oder
vollständig in einen zumindest teilweise verschließbaren Schleifmittelbehälter 14
einfahrbar. Hierzu weist eine Behälterabdeckung 28 eine entsprechende Öffnung 30
auf. Figure 1 shows a schematic representation of a
Des weiteren erkennt man, daß der Schleifmittelbehälter 14 zwei Luftzuführdüsen 32,
34 zur Erzeugung eines Luftstroms innerhalb des Behälters 14 aufweist, wobei die
Luftzuführdüsen 32, 34 mit ebenfalls innerhalb des Behälters 14 angeordneten
Luftleitvorrichtungen 36, 38 luftleitend verbunden sind. Die Luftleitvorrichtungen 36, 38
erstrecken sich dabei von der Behälterabdeckung 28 bis zu einem Behälterboden 40.
Der Luftstrom wird mit einem Druck zwischen 0,5 und 10 bar in das
Schleifmittelgehäuse 14 eingeleitet. Der Behälter 14 weist zudem geeignete
Luftablassvorrichtungen auf.It can also be seen that the abrasive
An dem Behälterboden 40 des Schleifmittelbehälters 14 ist ein Schwingungserreger 42
angeordnet. Zwischen einem Stützelement 50 - üblicherweise ein Betonsockel - und
dem Behälterboden 40 sind dabei Schwingungsentkoppler 46 angeordnet. Das
Stützelement 50 ist auf Schwingungsdämpfern 48 gelagert. Die Werkstückhalterung 16
ist ebenfalls mit einem Schwingungserreger 52 verbunden (vgl. Fig. 2). Die Frequenzen
der Schwingungserreger 42, 52 sind jeweils zwischen 10 und 100 Hz einstellbar und
sind entgegengerichtet. Die Schwingungsamplitude liegt zwischen 0,5 mm und 4,5 mm.
Zudem erzeugen die Schwingungserreger 42, 52 jeweils eine einstellbare
Beschleunigung von 1,0 bis 4 g.A
Das Schleifmittel besteht üblicherweise aus Schlacke, Quarzsand, Basaltstücken oder Korund oder einer Mischung davon, wobei die Körnigkeit des Schleifmittels kleiner als 2 mm ist. Es ist aber auch denkbar, daß andere abrasive, flüssige oder feste Schleifmittel verwendet werden.The abrasive usually consists of slag, quartz sand, basalt pieces or Corundum or a mixture thereof, the grain size of the abrasive being less than 2 mm is. But it is also conceivable that other abrasive, liquid or solid abrasives be used.
Figur 2 zeigt in einer schematische Seitendarstellung die Schleifvorrichtung 10. Man
erkennt, daß der Schwingungserreger 42 mit einem Elektromotor 44 zur
Schwingungserzeugung verbunden ist und das die Werkstückhalterung 16 mit dem
zweiten Schwingungserreger 52 gekoppelt ist.Figure 2 shows a schematic side view of the grinding
Figur 3 zeigt in einer schematischen Darstellung eine Schleifvorrichtung 10 gemäß
einer zweiten ersten Ausführungsform. Man erkennt, daß der Behälter 14 flachliegend
montiert ist. Zudem wird die Luft über im Bereich des Bodens 40 des Behälters 14
angeordnete Luftzuführdüsen 54 in den Behälter 14 eingeleitet. Es wird deutlich, daß
der Behälter 14 und die Hebe- und Senkvorrichtung 22 schwingungstechnisch gegen
den Gestellrahmen bzw. das Gehäuse 12 und gegen das Stützelement 50, auf dem die
Schleifvorrichtung 10 angeordnet ist, entkoppelt sind. Hierzu sind Schwingungsdämpfer
46 zwischen dem Behälter 14 und dem Stützelement 50 sowie Schwingungsdämpfer
56 zwischen der Hebe- und Senkvorrichtung 22 sowie Schwingungsdämpfer 48 zur
Lagerung des Stützelements 50 ausgebildet.FIG. 3 shows a grinding
Des weiteren erkennt man, daß die Hebe- und Senkvorrichtung 22 gemäß diesem
Ausführungsbeispiel eine Aufnahmevorrichtung 58 zur Befestigung der
Werkstückhalterung 16 aufweist. Die Hubbewegung erfolgt mittels einem an der
Aufnahmevorrichtung 58 entsprechend befestigten Drahtseil 62, mehreren
Umlenkrollen 64 für das Drahtseil 62 sowie einem Hubzylinder 60. Damit beide Seiten
des Werkstücks 18 bearbeitet werden können, kann die Hebe- und Senkvorrichtung 22
und/oder die Werkstückhalterung um 180° gedreht werden.It can also be seen that the lifting and lowering
Die Schwingungsparameter der Schwingungserreger 42, 52 entsprechen den
Parametern gemäß dem in den Figuren 1 und 2 beschriebenen Ausführungsbeispiel.The vibration parameters of the
Claims (10)
- Grinding device for grinding workpieces (18) including a rack panel or a housing (12) and at least one workpiece mounting (16) disposed within the rack panel or the housing (12), for mounting at least one workpiece (18), wherein the workpiece mounting (16) is formed rotatably and displaceably, and the workpiece mounting (16) is partially or completely introducible into an open or at least partially closable grinding material container (14) containing grinding material by means of a lifting and lowering device (22), and the grinding material container (14) has at least one air supply nozzle (32, 34, 54) for generating an air flow within the container (14), wherein an oscillator (42) is disposed at the grinding material container,
characterized in that
the workpiece mounting (16) with the workpiece (18) is partially or completely introducible into an open or at least partially closable grinding material container (14) containing grinding material by means of a lifting and lowering device (22),
wherein another oscillator (52) is disposed at the workpiece mounting (16),
wherein the frequencies of the oscillators (42, 52) are each adjustable between 10 and 100 Hz, and the respectively generated oscillations are opposed, and the oscillation amplitude is between 0.5 mm and 4.5 mm. - Grinding device according to claim 1,
characterized in that
the air is blown into the container (14) through the air supply nozzles (32, 34, 54) with a pressure of between 0.5 bar and 10 bar. - Grinding device according to any one of the preceding claims,
characterized in that
the air supply nozzle(s) (32, 34) is or are connected to air guiding devices (36, 38) disposed within the container (14), respectively, for generating a directed air flow. - Grinding device according to claim 1 or 2,
characterized in that
the air is introduced into the container (14) through air supply nozzles (54) disposed in the region of a bottom (40) of the container (14). - Grinding device according to any one of the preceding claims,
characterized in that
the oscillators (42, 52) each generate an adjustable acceleration of 1.0 to 4 g. - Grinding device according to any one of the preceding claims,
characterized in that
relative to oscillation, the container (14) and the lifting and lowering device (22) are decoupled with respect to the rack panel or the housing (12), respectively, and with respect to a support member (50), on which the grinding device (10) is disposed. - Grinding device according to any one of the preceding claims,
characterized in that
the container (14) is mounted lying flat. - Grinding device according to any one of the preceding claims,
characterized in that
the lifting and lowering device (22) is rotatably formed. - Grinding device according to any one of the preceding claims,
characterized in that
the grinding material consists of slag, quartz sand, basalt pieces or corundum or a mixture thereof, wherein the granularity of the grinding material is less than 2 mm. - Method for grinding workpieces using a grinding device according to any one of the preceding claims, the method including the steps of:a) Clamping a workpiece (18) in a rotatably formed workpiece mounting (16);b) Lowering and partially or completely introducing the workpiece mounting (16) into a grinding material container (14) my means of a lifting and lowering device (22);c) Introducing an air flow through air supply nozzles (32, 34, 54) into the grinding material container (14) and oppositely oscillating the grinding material container (14) and the workpiece mounting (16) for vorticity of the grinding material disposed within the container (14);d) Rotating and/or lifting and lowering the workpiece mounting (16) with the workpiece (18) completely or partially surrounded by the grinding material; ande) Removing or lifting-off the workpiece mounting (16) with the workpiece (18) from the grinding material container (14).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10043216A DE10043216A1 (en) | 2000-09-01 | 2000-09-01 | Grinding device and method for grinding workpieces |
| DE10043216 | 2000-09-01 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP1184132A2 EP1184132A2 (en) | 2002-03-06 |
| EP1184132A3 EP1184132A3 (en) | 2002-07-24 |
| EP1184132B1 true EP1184132B1 (en) | 2004-06-09 |
| EP1184132B9 EP1184132B9 (en) | 2004-10-27 |
Family
ID=7654709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01120995A Expired - Lifetime EP1184132B9 (en) | 2000-09-01 | 2001-08-31 | Method and apparatus for grinding workpieces |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1184132B9 (en) |
| AT (1) | ATE268670T1 (en) |
| DE (2) | DE10043216A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10310241A1 (en) * | 2003-03-08 | 2004-09-16 | Schenck Process Gmbh | Method and device for the surface treatment of metallic workpieces |
| CN1317106C (en) * | 2004-06-03 | 2007-05-23 | 李永南 | Globule grinder for jewelry |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD47309A (en) * | ||||
| DE1167689B (en) * | 1962-04-04 | 1964-04-09 | Voigtlaender Ag | Device for the creation of finely machined surfaces on workpieces |
| US4916865A (en) * | 1985-04-05 | 1990-04-17 | Carrier Vibrating Equipment, Inc. | Apparatus for surface treating a workpiece |
| FR2587928B1 (en) * | 1985-09-27 | 1989-09-29 | Bertin & Cie | DEVICE FOR STRIPPING OR IMPROVING THE SURFACE CONDITION OF AN OBJECT WITH SOLID PARTICLES |
| DE29502887U1 (en) * | 1995-02-23 | 1995-03-30 | Dannemann Peter | Plunge surface grinding machine |
-
2000
- 2000-09-01 DE DE10043216A patent/DE10043216A1/en not_active Withdrawn
-
2001
- 2001-08-31 AT AT01120995T patent/ATE268670T1/en not_active IP Right Cessation
- 2001-08-31 EP EP01120995A patent/EP1184132B9/en not_active Expired - Lifetime
- 2001-08-31 DE DE50102519T patent/DE50102519D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1184132B9 (en) | 2004-10-27 |
| DE10043216A1 (en) | 2002-03-28 |
| EP1184132A2 (en) | 2002-03-06 |
| DE50102519D1 (en) | 2004-07-15 |
| EP1184132A3 (en) | 2002-07-24 |
| ATE268670T1 (en) | 2004-06-15 |
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