EP0045433B1 - Polishing or grinding machine having an axially reciprocating and rotatable tool spindle - Google Patents

Polishing or grinding machine having an axially reciprocating and rotatable tool spindle Download PDF

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Publication number
EP0045433B1
EP0045433B1 EP81105717A EP81105717A EP0045433B1 EP 0045433 B1 EP0045433 B1 EP 0045433B1 EP 81105717 A EP81105717 A EP 81105717A EP 81105717 A EP81105717 A EP 81105717A EP 0045433 B1 EP0045433 B1 EP 0045433B1
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EP
European Patent Office
Prior art keywords
spindle
polishing
disc
grinding machine
drive shaft
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
Application number
EP81105717A
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German (de)
French (fr)
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EP0045433A1 (en
Inventor
Franz Amann
Peter Ing. Grad. Listl
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Maschinenfabrik Reinhausen GmbH
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Maschinenfabrik Reinhausen GmbH
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Priority to AT81105717T priority Critical patent/ATE7276T1/en
Publication of EP0045433A1 publication Critical patent/EP0045433A1/en
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Publication of EP0045433B1 publication Critical patent/EP0045433B1/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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/16—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces performing a reciprocating movement, e.g. during which the sense of rotation of the working-spindle is reversed
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18024—Rotary to reciprocating and rotary

Definitions

  • the invention relates to a polishing or grinding machine according to the preamble of claim 1. Such a device is also described in DE-A1-2818667.
  • a problem with these polishing or grinding machines is that the axial reciprocation of the spindle carrying the polishing tool generates vibrations which can be transmitted to other machine parts and to the housing of the machine.
  • the advantage achieved by the invention is that the vibrations remain essentially limited to the spindle and the mass balancing body provided according to the invention and thus cannot be transferred to the other machine parts.
  • the mass of the rotating body acting as a compensating body as large as possible as the mass of the spindle with a polishing or grinding tool attached to it.
  • the angle of inclination of the orbit on which the bearing causing the oscillation of the spindle runs can then be chosen to be just as large as the angle of inclination of the orbit on which the bearing causing the counter-oscillation on the compensating body runs. If there is a deviation in the mass of the spindle with the tool and compensating body due to the use of different polishing or grinding tools, this difference can be compensated for by differently set inclination angles of the two orbits. The inclination angles of the two orbits are then expediently adjustable for this purpose.
  • a drive shaft 1 is provided with a driver 2 which engages in a form-fitting manner in a recess 3 of a spindle 4.
  • the spindle 4 which carries the polishing tool (not shown) at its lower end, has a cantilevered bearing 5 which rotates with the spindle 4 as soon as the drive shaft 1 is rotated.
  • the cantilevered bearing 5 is guided on a path which is inclined with respect to the plane 7 perpendicular to the axis 6 with the angle a, so that the spindle 4 forcibly performs an additional up and down movement during rotation, as indicated by the double arrow is.
  • the spindle is mounted in a ball guide 10 of the housing 19 (not shown in more detail).
  • the inclination of the orbit running on the disk 8 for the cantilevered bearing 5 can be adjusted so that the oscillation stroke of the spindle 4 can be varied.
  • a spring 9 causes the spindle 4 with its cantilevered bearing 5 to always be pressed against the orbit of the disk 8.
  • a rotary body 12 is mounted on the drive shaft 1 by means of an additional ball guide 11, which serves as a mass balance for the spindle 4 and the tool (not shown) located thereon.
  • This rotary body 12 is positively coupled to the drive shaft 1 via the driver 13, and it in turn engages with a driver 14 in a recess 15 of the spindle 4.
  • the spindle 4 in turn has a cantilevered bearing 5 which rotates together with the spindle 4 when it rotates and is guided on an inclined path with the angle of inclination ⁇ , which in turn runs on a disk 8, as a result of which the axial oscillating movement of the spindle 4 according to the double arrow is produced.
  • the rotating body 12 is also provided with a cantilevered bearing 16 which rotates together with the rotating body 12 when the drive shaft and spindle rotate.
  • a further disk 17 is provided as the guideway for this protruding bearing 16, which is arranged such that the guideway running thereon is inclined by the same inclination angle a as in the guideway assigned to the spindle 4, but both inclination angles are opposite.
  • a compression spring 18 which presses both the spindle 4 with its cantilevered bearing 5 and the rotary body 12 with its cantilevered bearing 16 against the respective guideways of the disks 8 and 17, respectively.
  • a drive shaft 21 is in the housing head in a manner not shown in detail Polishing grinder stored. Also in the housing head 22, a spindle 24 is mounted by means of the bearings 23, not shown in detail, which carries the polishing tool 25 at its lower end. The spindle 24 is also mounted on the end of the drive shaft 21 coaxially with the latter by means of a bearing sleeve 26.
  • the bearing of the bearing sleeve 26 is designed as a ball guide 27 so that the spindle 24 can perform the axial oscillation movement to be described later.
  • the coupling between the drive shaft 21 and the spindle 24 is as follows: On the drive shaft 21 there is a driver 28 with a recess 29.
  • a pin 30 engages in this recess 29 and is fixedly connected to the rotary body 31.
  • This rotary body 31 has a recess 32 into which a further pin 33 engages, which in turn is firmly connected to the bearing sleeve 26 of the spindle 24 already mentioned. If the drive shaft 21 is set in rotation by the drive (not shown in detail), this rotation is transmitted by the driver 28 and the pin 30 to the rotating body 31 and further by the pin 33 to the bearing sleeve 26 and thus to the spindle 24.
  • the axial oscillation stroke required on the spindle 24 is generated as follows: on the bearing sleeve 26 there is a protruding bearing 34 which rotates on a track of a disk 36 when the bearing sleeve rotates. Depending on the desired oscillation stroke, this disk 36 is inclined relative to the plane 38 perpendicular to the central axis 37, for which purpose the disk can be pivoted about the bearing pin 39. It is readily apparent that the inclination of the disk 36 and the simultaneous pushing of the bearing 34 against the disk 36 of the spindle 24 force an oscillating stroke. The bearing 34 or spindle 24 is pressed against the disk 36 by means of the compression spring 41.
  • a likewise protruding bearing 42 is provided in the rotating body 31, which rotates together with the rotating body 31 when the drive shaft 21 and spindle 24 rotate.
  • it is pressed exactly like the cantilevered bearing 34 against another inclined disc 43, which is accomplished by the compression spring 41 already mentioned.
  • This disc 43 can also be pivoted about bearing pin 40, so that the disc 43 can be tilted as desired. This also results in an oscillating axial reciprocating movement for the rotating body 31 when rotating.
  • the rotating body 31 is therefore, just like the bearing sleeve 26, mounted on the drive shaft 31 by means of a further ball guide 49.
  • the inclination of the two disks 36 and 43 which determine the orbits of the protruding bearings 34 and 42 is carried out by means of a common adjusting device 44.
  • This consists of an adjusting screw 45 with a conical end, which presses against two adjusting pins 46, 47 which can be pushed up and down.
  • These adjusting pins 46 and 47 rest against the two disks 36 and 43, so that by pushing out the adjusting pins 46, 47 by means of the conical end of the adjusting screw 45, the two disks 36 and 43 spread evenly on both sides.
  • the screw 50 which serves as an abutment for the upper adjusting pin 46, can at the same time serve to set the inclination of the upper disc 43 differently from the inclination of the lower disc 34.
  • the spring 48 which is also arranged between the two disks 36 and 43, serves to stabilize the position of the two disks. It is readily apparent that the arrangement described above always causes the spindle 24 to swing against one another with the polishing tool 25 and the rotating body 31. Because the mass of the rotary body 31 corresponds approximately to the mass of the spindle 24 and the polishing tool 25, it is thus possible to limit the vibrations occurring in the system to the spindle and the rotary body and to keep them largely away from the housing head 22.

Abstract

The grinding and polishing machine has a tool-carrying spindle (1) driven with a combined rotating and rocking action. It has a driving shaft (4) which is reciprocated axially and passes through a disc (8) which slopes at an acute angle. Above this disc is a second disc attached to the shaft, with a roller (5) attached to its periphery which rotates against the sloping disc. The tool spindle also passes through another sloping disc and through a plate (12) with a peripheral roller (16) which travels against this second sloping disc. The tool spindle carries an arm (13) with a dog projecting from it to fit into a hole in the plate to rotate the same. This plate also has a dog (14) which fits into a hole (15) in the disc attached to the driving shaft so that it transmits rotary movement for driving the tool spindle.

Description

Die Erfindung bezieht sich auf eine Polier- oder Schleifmaschine gemäß Oberbegriff des Anspruches 1. Eine solche Vorrichtung ist auch in der DE-A1-2818667 beschrieben. Bei diesen Polier- oder Schleifmaschinen liegt eine Schwierigkeit darin, daß durch das axiale Hin- und Herbewegen der das Polierwerkzeug tragenden Spindel Schwingungen erzeugt werden, die auf andere Maschinenteile und auf das Gehäuse der Maschine übertragen werden können.The invention relates to a polishing or grinding machine according to the preamble of claim 1. Such a device is also described in DE-A1-2818667. A problem with these polishing or grinding machines is that the axial reciprocation of the spindle carrying the polishing tool generates vibrations which can be transmitted to other machine parts and to the housing of the machine.

Es ist deshalb Aufgabe der Erfindung, die eingangs genannte Polier- oder Schleifmaschine derart weiterzuentwickeln, daß die durch das oszillierende Hin- und Herbewegen der das Polierwerkzeug tragenden drehbaren Spindel erzeugten Schwingungen möglichst nicht auf andere Maschinenteile übertragen werden. Diese Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Anspruches 1 angegebenen Mittel gelöst.It is therefore an object of the invention to further develop the above-mentioned polishing or grinding machine in such a way that the vibrations generated by the oscillating back and forth of the rotatable spindle carrying the polishing tool are preferably not transferred to other machine parts. This object is achieved by the means specified in the characterizing part of claim 1.

Der mit der Erfindung erzielte Vorteil liegt darin, daß die Schwingungen im wesentlichen auf die Spindel und den erfindungsgemäß vorgesehenen Massenausgleichskörper beschränkt bleiben und sich somit nicht auf die übrigen Maschinenteile übertragen können.The advantage achieved by the invention is that the vibrations remain essentially limited to the spindle and the mass balancing body provided according to the invention and thus cannot be transferred to the other machine parts.

Hierbei ist es zweckmäßig, die Masse des als Ausgleichskörper wirkenden Rotationskörpers möglichst genauso groß zu wählen wie die Masse der Spindel mit daran befestigtem Polier- oder Schleifwerkzeug. Es kann dann der Neigungswinkel der Umlaufbahn, auf welcher das die Oszillation der Spindel bewirkende Lager läuft, genauso groß gewählt werden wie der Neigungswinkel der Umlaufbahn, auf der das die Gegenoszillation am. Ausgleichskörper bewirkende Lager läuft. Soweit eine Abweichung in den Massen von Spindel mit Werkzeug und Ausgleichskörper infolge Einsatzes verschiedener Polier- oder Schleifwerkzeuge auftritt, kann dieser Unterschied durch unterschiedlich eingestellte Neigungswinkel der beiden Umlaufbahnen ausgeglichen werden. Hierfür sind dann zweckmäßig die Neigungswinkel der beiden Umlaufbahnen jeder für sich einstellbar. Jedoch sollte man bemüht sein, die Neigungswinkel der beiden z. B. auf je einer schwenkbaren Scheibe verlaufenden Umlaufbahnen der Einfachheit halber gemeinsam verstellbar zu machen, z. B. durch einen die Spreizung der Scheiben bewirkenden Kegel, der selbstverständlich auch während des Laufes der Maschine betätigbar ist.It is expedient to choose the mass of the rotating body acting as a compensating body as large as possible as the mass of the spindle with a polishing or grinding tool attached to it. The angle of inclination of the orbit on which the bearing causing the oscillation of the spindle runs can then be chosen to be just as large as the angle of inclination of the orbit on which the bearing causing the counter-oscillation on the compensating body runs. If there is a deviation in the mass of the spindle with the tool and compensating body due to the use of different polishing or grinding tools, this difference can be compensated for by differently set inclination angles of the two orbits. The inclination angles of the two orbits are then expediently adjustable for this purpose. However, one should make an effort to determine the angle of inclination of the two z. B. on each swiveling disk running orbits for the sake of simplicity, z. B. by a cone causing the spreading of the disks, which of course can also be operated while the machine is running.

Die Erfindung wird nachstehend an Hand der Zeichnungen noch näher erläutert. Es zeigen

  • Figur 1 eine schematische Anordnung von Antriebswelle und Spindel in herkömmlicher Weise,
  • Figur 2 die schematische Anordnung von Antriebswelle und Spindel gemäß der Erfindung,
  • Figur 3 einen Schnitt eines Ausführungsbeispieles der Erfindung, wobei nur die für die Erfindung wesentlichen Teile der Polier- oder Schleifmaschine dargestellt sind, und
  • Figur 4 einen weiteren Schnitt des Ausführungsbeispieles nach Figur 3.
The invention is explained in more detail below with reference to the drawings. Show it
  • FIG. 1 shows a schematic arrangement of the drive shaft and spindle in a conventional manner,
  • FIG. 2 shows the schematic arrangement of the drive shaft and spindle according to the invention,
  • FIG. 3 shows a section of an exemplary embodiment of the invention, only the parts of the polishing or grinding machine that are essential for the invention being shown, and
  • FIG. 4 shows a further section of the exemplary embodiment according to FIG. 3.

Gemäß Figur 1 ist eine Antriebswelle 1 mit einem Mitnehmer 2 versehen, der in eine Ausnehmung 3 einer Spindel 4 formschlüssig eingreift. Die Spindel 4, die an ihrem unteren Ende das nicht dargestellte Polierwerkzeug trägt, besitzt ein ausladendes Lager 5, welches, sobald die Antriebswelle 1 in Rotation versetzt wird, mit der Spindel 4 umläuft. Das ausladende Lager 5 wird dabei auf einer Bahn geführt, die gegenüber der zur Achse 6 senkrechten Ebene 7 mit dem Winkel a geneigt ist, so daß die Spindel 4 bei Rotation zwangsweise eine zusätzliche auf und ab gehende Bewegung ausführt, wie dies durch den Doppelpfeil angedeutet ist. Die Spindel ist hierzu in einer Kugelführung 10 des nicht näher dargestellten Gehäuses 19 gelagert. Im allgemeinen ist die Neigung der auf der Scheibe 8 verlaufenden Umlaufbahn für das ausladende Lager 5 einstellbar, um so den Oszillationshub der Spindel 4 variieren zu können. Eine Feder 9 bewirkt, daß die Spindel 4 mit ihrem ausladenden Lager 5 stets gegen die Umlaufbahn der Scheibe 8 gedrückt wird.According to FIG. 1, a drive shaft 1 is provided with a driver 2 which engages in a form-fitting manner in a recess 3 of a spindle 4. The spindle 4, which carries the polishing tool (not shown) at its lower end, has a cantilevered bearing 5 which rotates with the spindle 4 as soon as the drive shaft 1 is rotated. The cantilevered bearing 5 is guided on a path which is inclined with respect to the plane 7 perpendicular to the axis 6 with the angle a, so that the spindle 4 forcibly performs an additional up and down movement during rotation, as indicated by the double arrow is. For this purpose, the spindle is mounted in a ball guide 10 of the housing 19 (not shown in more detail). In general, the inclination of the orbit running on the disk 8 for the cantilevered bearing 5 can be adjusted so that the oscillation stroke of the spindle 4 can be varied. A spring 9 causes the spindle 4 with its cantilevered bearing 5 to always be pressed against the orbit of the disk 8.

Gemäß Figur 2 ist auf der Antriebswelle 1 mittels einer zusätzlichen Kugelführung 11 ein Rotationskörper 12 gelagert, der als Massenausgleich für die Spindel 4 und das daran befindliche Werkzeug (nicht dargestellt) dient. Dieser Rotationskörper 12 ist über den Mitnehmer 13 formschlüssig mit der Antriebswelle 1 gekoppelt, und er greift seinerseits mit einem Mitnehmer 14 in eine Ausnehmung 15 der Spindel 4 ein. Die Spindel 4 besitzt wiederum ein ausladendes Lager 5, welches bei Rotation der Spindel 4 mit dieser zusammen umläuft und an einer schiefen Bahn mit dem Neigungswinkel α, die wiederum auf einer Scheibe 8 verläuft, geführt wird, wodurch die axiale Oszillationsbewegung der Spindel 4 gemäß Doppelpfeil erzeugt wird. Auf gleiche Weise wie die Spindel 4 ist auch der Rotationskörper 12 mit einem ausladenden Lager 16 versehen, welches bei Rotation von Antriebswelle und Spindel zusammen mit dem Rotationskörper 12 umläuft. Als Führungsbahn für dieses ausladende Lager 16 ist eine weitere Scheibe 17 vorgesehen, die so angeordnet ist, daß die hierauf verlaufende Führungsbahn zwar um denselben Neigungswinkel a wie bei der der Spindel 4 zugeordneten Führungsbahn geneigt ist, jedoch sind beide Neigungswinkel entgegengesetzt. Zwischen Spindel 4 und Rotationskörper 12 ist eine Druckfeder 18 angeordnet, die sowohl die Spindel 4 mit ihrem ausladenden Lager 5 wie auch den Rotationskörper 12 mit seinem ausladenden Lager 16 gegen die jeweiligen Führungsbahnen der Scheiben 8 bzw. 17 drückt.According to FIG. 2, a rotary body 12 is mounted on the drive shaft 1 by means of an additional ball guide 11, which serves as a mass balance for the spindle 4 and the tool (not shown) located thereon. This rotary body 12 is positively coupled to the drive shaft 1 via the driver 13, and it in turn engages with a driver 14 in a recess 15 of the spindle 4. The spindle 4 in turn has a cantilevered bearing 5 which rotates together with the spindle 4 when it rotates and is guided on an inclined path with the angle of inclination α, which in turn runs on a disk 8, as a result of which the axial oscillating movement of the spindle 4 according to the double arrow is produced. In the same way as the spindle 4, the rotating body 12 is also provided with a cantilevered bearing 16 which rotates together with the rotating body 12 when the drive shaft and spindle rotate. A further disk 17 is provided as the guideway for this protruding bearing 16, which is arranged such that the guideway running thereon is inclined by the same inclination angle a as in the guideway assigned to the spindle 4, but both inclination angles are opposite. Between the spindle 4 and the rotating body 12 there is a compression spring 18 which presses both the spindle 4 with its cantilevered bearing 5 and the rotary body 12 with its cantilevered bearing 16 against the respective guideways of the disks 8 and 17, respectively.

Bei dem Ausführungsbeispiel nach Figur 3 und Figur 4 ist eine Antriebswelle 21 auf nicht näher dargestellte Weise in dem Gehäusekopf einer Polierschleifmaschine gelagert. Ebenfalls im Gehäusekopf 22 ist mittels der im einzelnen nicht näher dargestellten Lager 23 eine Spindel 24 gelagert, die an ihrem unteren Ende das Polierwerkzeug 25 trägt. Die Spindel 24 ist ferner mittels einer Lagerhülse 26 auf dem Ende der Antriebswelle 21 gleichachsig mit dieser gelagert. Das Lager der Lagerhülse 26 ist dabei als Kugelführung 27 ausgebildet, damit die Spindel 24, die später noch näher zu beschreibende axiale Oszillationsbewegung ausführen kann. Die Kupplung zwischen Antriebswelle 21 und Spindel 24 ist wie folgt : An der Antriebswelle 21 befindet sich ein Mitnehmer 28 mit einer Ausnehmung 29. In diese Ausnehmung 29 greift ein Stift 30 ein, der mit dem Rotationskörper 31 fest verbunden ist. Dieser Rotationskörper 31 besitzt eine Ausnehmung 32, in welche ein weiterer Stift 33 eingreift, der seinerseits fest mit der bereits genannten Lagerhülse 26 der Spindel 24 verbunden ist. Wird also die Antriebswelle 21 durch den im einzelnen nicht dargestellten Antrieb in Rotation versetzt, so wird diese Rotation durch den Mitnehmer 28 und den Stift 30 auf den Rotationskörper 31 und weiter durch den Stift 33 auf die Lagerhülse 26 und somit auf die Spindel 24 übertragen.In the exemplary embodiment according to FIG. 3 and FIG. 4, a drive shaft 21 is in the housing head in a manner not shown in detail Polishing grinder stored. Also in the housing head 22, a spindle 24 is mounted by means of the bearings 23, not shown in detail, which carries the polishing tool 25 at its lower end. The spindle 24 is also mounted on the end of the drive shaft 21 coaxially with the latter by means of a bearing sleeve 26. The bearing of the bearing sleeve 26 is designed as a ball guide 27 so that the spindle 24 can perform the axial oscillation movement to be described later. The coupling between the drive shaft 21 and the spindle 24 is as follows: On the drive shaft 21 there is a driver 28 with a recess 29. A pin 30 engages in this recess 29 and is fixedly connected to the rotary body 31. This rotary body 31 has a recess 32 into which a further pin 33 engages, which in turn is firmly connected to the bearing sleeve 26 of the spindle 24 already mentioned. If the drive shaft 21 is set in rotation by the drive (not shown in detail), this rotation is transmitted by the driver 28 and the pin 30 to the rotating body 31 and further by the pin 33 to the bearing sleeve 26 and thus to the spindle 24.

Der an der Spindel 24 geforderte axiale Oszillationshub wird wie folgt erzeugt : An der Lagerhülse 26 befindet sich ein ausladendes Lager 34, welches beim Rotieren der Lagerhülse auf einer Bahn einer Scheibe 36 umläuft. Diese Scheibe 36 wird je nach gewünschtem Oszillationshub gegenüber der zur Mittenachse 37 senkrechten Ebene 38 schräg gestellt, wozu die Scheibe um die Lagerzapfen 39 schwenkbar ist. Es ist ohne weiteres klar, daß durch die Neigung der Scheibe 36 und das gleichzeitige Gegendrücken des Lagers 34 gegen die Scheibe 36 der Spindel 24 eine oszillierende Hubbewegung aufgezwungen wird. Das Gegendrücken von Lager 34 bzw. Spindel 24 gegen die Scheibe 36 erfolgt mittels der Druckfeder 41.The axial oscillation stroke required on the spindle 24 is generated as follows: on the bearing sleeve 26 there is a protruding bearing 34 which rotates on a track of a disk 36 when the bearing sleeve rotates. Depending on the desired oscillation stroke, this disk 36 is inclined relative to the plane 38 perpendicular to the central axis 37, for which purpose the disk can be pivoted about the bearing pin 39. It is readily apparent that the inclination of the disk 36 and the simultaneous pushing of the bearing 34 against the disk 36 of the spindle 24 force an oscillating stroke. The bearing 34 or spindle 24 is pressed against the disk 36 by means of the compression spring 41.

Auf gleiche Weise wie bei der Lagerhülse 26 ist beim Rotationskörper 31 ein ebenfalls ausladendes Lager 42 vorgesehen, welches beim Rotieren von Antriebswelle 21 und Spindel 24 zusammen mit dem Rotationskörper 31 umläuft. Hierbei wird es genau wie das ausladende Lager 34 gegen eine weitere schräg gestellte Scheibe 43 gedrückt, was durch die bereits genannte Druckfeder 41 bewerkstelligt wird. Auch diese Scheibe 43 ist um Lagerzapfen 40 schwenkbar, so daß eine gewünschte Schrägstellung der Scheibe 43 vorgenommen werden kann. Somit ergibt sich auch für den Rotationskörper 31 beim Rotieren eine oszillierende axiale Hin- und Herbewegung. Der Rotationskörper 31 ist deswegen, genau wie die Lagerhülse 26, mittels einer weiteren Kugelführung 49 auf der Antriebswelle 31 gelagert. Die Schrägstellung der beiden die Umlaufbahnen der ausladenden Lager 34 und 42 bestimmenden Scheiben 36 und 43 wird mittels einer gemeinsamen Stellvorrichtung 44 vorgenommen. Diese besteht aus einer Stellschraube 45 mit kegelförmigen Ende, welches gegen zwei nach oben und unten wegdrückbare Stellstifte 46, 47 drückt. Diese Stellstifte 46 und 47 liegen andererseits an den beiden Scheiben 36 und 43 an, so daß durch Herausdrücken der Stellstifte 46, 47 mittels des kegelförmigen Endes der Stellschraube 45 ein beidseitiges gleichmäßiges Spreizen der beiden Scheiben 36 und 43 erfolgt. Die Schraube 50, die dabei als Anlage für den oberen Stellstift 46 dient, kann gleichzeitig dazu dienen, die Neigung der oberen Scheibe 43 gegenüber der Neigung der unteren Scheibe 34 abweichend einzustellen. Die Feder 48, die ebenfalls zwischen den beiden Scheiben 36 und 43 angeordnet ist, dient der Stabilisierung der Lage der beiden Scheiben. Es ist ohne weiteres klar, daß durch die zuvor beschriebene Anordnung es stets zu einem Gegeneinanderschwingen von Spindel 24 mit Polierwerkzeug 25 und Rotationskörper 31 kommt. Dadurch, daß die Masse des Rotationskörpers 31 in etwa der Masse von Spindel 24 und Polierwerkzeug 25 entspricht, gelingt es somit, die im System entstehenden Schwingungen auf Spindel und Rotationskörper zu begrenzen und sie weitgehend vom Gehäusekopf 22 fernzuhalten. Soweit Unterschiede in den Massen der beiden Schwingsysteme wegen des Einsatzes unterschiedlicher Polierwerkzeuge auftreten, kann - jedenfalls in gewissen Grenzen - mittels der Schraube 50 eine Kompensation vorgenommen werden, indem, wie bereits ausgeführt, an der Scheibe 43 eine von der Neigung der Scheibe 36 abweichende Neigung eingestellt wird.In the same way as with the bearing sleeve 26, a likewise protruding bearing 42 is provided in the rotating body 31, which rotates together with the rotating body 31 when the drive shaft 21 and spindle 24 rotate. Here, it is pressed exactly like the cantilevered bearing 34 against another inclined disc 43, which is accomplished by the compression spring 41 already mentioned. This disc 43 can also be pivoted about bearing pin 40, so that the disc 43 can be tilted as desired. This also results in an oscillating axial reciprocating movement for the rotating body 31 when rotating. The rotating body 31 is therefore, just like the bearing sleeve 26, mounted on the drive shaft 31 by means of a further ball guide 49. The inclination of the two disks 36 and 43 which determine the orbits of the protruding bearings 34 and 42 is carried out by means of a common adjusting device 44. This consists of an adjusting screw 45 with a conical end, which presses against two adjusting pins 46, 47 which can be pushed up and down. These adjusting pins 46 and 47, on the other hand, rest against the two disks 36 and 43, so that by pushing out the adjusting pins 46, 47 by means of the conical end of the adjusting screw 45, the two disks 36 and 43 spread evenly on both sides. The screw 50, which serves as an abutment for the upper adjusting pin 46, can at the same time serve to set the inclination of the upper disc 43 differently from the inclination of the lower disc 34. The spring 48, which is also arranged between the two disks 36 and 43, serves to stabilize the position of the two disks. It is readily apparent that the arrangement described above always causes the spindle 24 to swing against one another with the polishing tool 25 and the rotating body 31. Because the mass of the rotary body 31 corresponds approximately to the mass of the spindle 24 and the polishing tool 25, it is thus possible to limit the vibrations occurring in the system to the spindle and the rotary body and to keep them largely away from the housing head 22. Insofar as there are differences in the masses of the two vibration systems due to the use of different polishing tools, compensation can be made - at least within certain limits - by means of the screw 50 by, as already explained, an inclination on the disc 43 which deviates from the inclination of the disc 36 is set.

Claims (4)

1. Polishing or grinding machine, in which a spindle (4, 24), which carries the polishing or grinding tool and is borne to be axially reciprocatable in a slide bearing, is shape-lockingly coupled by means of entraining member and recess with a co-axially arranged drive shaft (1, 21), wherein the spindle (4) carries a projecting bearing (5), which is rotating with it and guided on a track which encircles the spindle (4) and is inclined to the plane which is perpendicular to the spindle axis (6), characterised by a rotary body (12, 31), which is shape-lockingly coupled with the drive shaft (1, 21), is likewise axially reciprocatable, is borne by means of a further slide bearing (11, 49) on the drive shaft (1, 12), is in its turn shape-lockingly coupled by means of an entraining member (14, 33) engaging into a recess (15) of the spindle (4, 24) with the latter and which likewise carries a projecting bearing (16, 42), which is rotating with it and guided on a further, likewise encircling track (17, 43), which is inclined oppositely to the track (8, 36) associated with the spindle, wherein a spring (18, 41) acting in axial direction is arranged between rotary body (12, 31) and spin- die (4, 24).
2. Polishing or grinding machine according to claim 1, characterised thereby, that the inclination (a) of the circular tracks effecting the reciprocatory movement of rotary body (12, 31) and spindle (4, 24) is adjustable.
3. Polishing or grinding machine according to claim 1 or 2, characterised thereby, that the mass of the rotary body (12, 31) is about equally great as the mass of spindle (4, 24) and grinding or polishing tool (25).
4. Polishing or grinding machine according to claim 3, characterised thereby, that the absolute amount of the inclination (a) of both circular tracks is about equally great.
EP81105717A 1980-08-02 1981-07-21 Polishing or grinding machine having an axially reciprocating and rotatable tool spindle Expired EP0045433B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81105717T ATE7276T1 (en) 1980-08-02 1981-07-21 POLISHING OR GRINDING MACHINE WITH BOTH AXIALLY MOVABLE AND ROTATABLE SPINDLE CARRYING THE POLISHING TOOL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803029417 DE3029417A1 (en) 1980-08-02 1980-08-02 POLISHING OR GRINDING MACHINE WITH ANOTHER AXIAL MOVABLE AS WELL AS A ROTATING SPINDLE CARRYING FROM A POLISHING TOOL
DE3029417 1980-08-02

Publications (2)

Publication Number Publication Date
EP0045433A1 EP0045433A1 (en) 1982-02-10
EP0045433B1 true EP0045433B1 (en) 1984-05-02

Family

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EP81105717A Expired EP0045433B1 (en) 1980-08-02 1981-07-21 Polishing or grinding machine having an axially reciprocating and rotatable tool spindle

Country Status (5)

Country Link
US (1) US4398374A (en)
EP (1) EP0045433B1 (en)
JP (1) JPS5761457A (en)
AT (1) ATE7276T1 (en)
DE (1) DE3029417A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3923156A1 (en) * 1989-07-13 1991-01-24 Diskus Werke Frankfurt Main Ag PINOLINE INPUT FOR MACHINE TOOLS, IN PARTICULAR FLAT GRINDING MACHINES
US5365628A (en) * 1993-12-15 1994-11-22 Kenneth Evensen Roller assembly for rotary buffer
US6569002B2 (en) 1999-12-10 2003-05-27 Porter-Cable/Delta Hand-held oscillating spindle sander
JP4725206B2 (en) * 2005-06-15 2011-07-13 ブラザー工業株式会社 Rotating body driving force transmission mechanism

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE2818667A1 (en) * 1977-07-26 1979-02-08 Fiz Tech I Akad Nauk MACHINE TOOL FOR SPATIAL POLISHING WITH MAGNETIC GRINDING POWDER IN THE MAGNETIC FIELD OF WORKPIECES IN THE SHAPE OF A ROTATING BODY

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FR623715A (en) * 1926-10-27 1927-06-29 Device for imparting to a rotary member an axial translational movement that is not synchronized with the rotational movement
US2138862A (en) * 1936-12-22 1938-12-06 Walter E Johnston Utility tool
US2578559A (en) * 1946-12-06 1951-12-11 Koragren Theodore Yngve Motion converting mechanism
US2542408A (en) * 1947-08-30 1951-02-20 New Britain Machine Co Drill speeder and the like
FR405641A (en) * 1950-01-07 1910-01-08 Karl Wilhelm Rockenhauser Improvements in tower platforms
CH427442A (en) * 1965-12-02 1966-12-31 Bruderer Ag Device for mass balancing in machines driven by a crank drive
US3538646A (en) * 1969-03-26 1970-11-10 Caterpillar Tractor Co Reciprocator for grinding wheel spindles
US3757638A (en) * 1972-04-12 1973-09-11 J Martin Five-axis shaper
CS172656B1 (en) * 1974-06-24 1977-01-28

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
DE2818667A1 (en) * 1977-07-26 1979-02-08 Fiz Tech I Akad Nauk MACHINE TOOL FOR SPATIAL POLISHING WITH MAGNETIC GRINDING POWDER IN THE MAGNETIC FIELD OF WORKPIECES IN THE SHAPE OF A ROTATING BODY

Also Published As

Publication number Publication date
EP0045433A1 (en) 1982-02-10
DE3029417A1 (en) 1982-03-11
US4398374A (en) 1983-08-16
JPS5761457A (en) 1982-04-13
ATE7276T1 (en) 1984-05-15

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