EP2228173B1 - Polishing or grinding device with a pneumatic drive - Google Patents

Polishing or grinding device with a pneumatic drive Download PDF

Info

Publication number
EP2228173B1
EP2228173B1 EP10002148.4A EP10002148A EP2228173B1 EP 2228173 B1 EP2228173 B1 EP 2228173B1 EP 10002148 A EP10002148 A EP 10002148A EP 2228173 B1 EP2228173 B1 EP 2228173B1
Authority
EP
European Patent Office
Prior art keywords
polishing
air
compressed
polishing pad
drive
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.)
Not-in-force
Application number
EP10002148.4A
Other languages
German (de)
French (fr)
Other versions
EP2228173A2 (en
EP2228173A3 (en
Inventor
Boris Dipl.-Ing. Kochanski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE202010013895U priority Critical patent/DE202010013895U1/en
Publication of EP2228173A2 publication Critical patent/EP2228173A2/en
Publication of EP2228173A3 publication Critical patent/EP2228173A3/en
Application granted granted Critical
Publication of EP2228173B1 publication Critical patent/EP2228173B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/026—Fluid driven
    • 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
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/18—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor with cooling provisions

Definitions

  • the invention relates to a polishing apparatus according to the preamble of patent claim 1.
  • a corresponding polishing device is in the EP 0 691 181 A1 shown.
  • a pneumatic drive is already provided.
  • the compressed air flow supplied to the polishing device is split upstream of the pneumatic drive.
  • a part of this compressed air flow drives the pneumatic drive of the polishing apparatus, while the other part of the compressed air flow is supplied as cooling air to the processing surface or contact surface between a polishing pad of the polishing apparatus and the painted surface to be treated.
  • This known polishing device has a comparatively complicated technical-constructive structure and beyond a comparatively high compressed air and energy consumption.
  • a polishing apparatus which can be used to polish painted surfaces.
  • a centrally rotatable actual polishing part which is formed in one embodiment as a disc-shaped brush.
  • This polished part is with his Lower surface can be brought into contact with the surface to be polished.
  • the polishing device includes a pneumatic drive, by means of which the polishing part or the brush is rotatable.
  • the drive compressed air by means of which the compressed air drive is operated, is directed from the outside of the compressed air drive to the polishing part or to the brush.
  • the US 5 218 790 A and the NL 7 601 835 A each show grinding devices in which suction channels are formed in the actual grinding member, by means of which are obtained during the grinding process resulting particles from the area to be ground surface to be vacuumed. This is done by means of a vacuum device formed inside the respective grinding device, by means of which an air flow is generated by means of which the abovementioned particles are moved into the interior of the device.
  • the JP 2001 293664 A shows a polishing apparatus in which no actual radially extending to the outer circumference air channels are provided in the actual polishing pad.
  • the air ducts are arranged on the back of the actual polishing part and formed in the carrier disk. At the polishing surface no air channels are provided, leading to the outer periphery of the actual polishing. In addition, no drive compressed air is used in this known polishing device.
  • a polishing sponge is known, in the polishing surface notches are formed. These notches end within the polishing sponge and do not extend to the outer periphery of the same.
  • a device for conveying and distributing the processing means for a tool for processing a glass ribbon which can also be used for polishing purposes.
  • an annular felt covering acts on a surface to be processed.
  • Slits are formed on the underside of the felt cover.
  • These slots serve to distribute a polishing agent mixture on the processing surface. None of these slots leads from the central area of the felt covering to its outer periphery. Rather, radially inner slots are provided which lead radially outward from a central region, but are closed at their radially outer ends - within the felt lining.
  • Radially outer slots are offset from the radially inner slots in the felt lining. The radially inner ends of these slots or cuts also end within the felt cover.
  • the object of the invention is to realize an improved cooling effect on the surface to be polished in the case of such a polishing device.
  • the compressed air drive acting on the drive compressed air is used after its associated with a considerable cooling relaxation in the compressed air drive once again as cooling air at the interface between the polishing pad and the surface to be treated.
  • the cooling air By means of the cooling air, optimum removal of the heat energy arising therefrom is ensured in a targeted manner on the current processing surface, wherein, moreover, accelerated removal of the solvents from the fresh paint can be ensured.
  • the entire polishing device supplied compressed air is used both as driving compressed air and as cooling air. The efficiency of the polishing apparatus according to the invention is considerably increased in comparison to such a device known from the prior art.
  • the drive compressed air after it has flowed through the compressed air drive, relaxed and thus cooled, can be passed to the polishing pad with little technical-constructive means.
  • the air flowing on the lower surface of the polishing pad can optimally exert its effect as cooling air.
  • the lower surface of the polishing pad can be designed undisturbed and over the entire surface, with the resulting advantages for the polishing process.
  • the cooling of the compressed air drive leaving the drive compressed air can be increased.
  • an optimum speed range can be provided for the polishing pad.
  • a stalling of the pneumatic drive of the polishing apparatus is reliably avoided in each case, provided that the contact pressure of the polishing apparatus on the processing surface does not exceed the permissible value for expert processing.
  • the polishing device according to the invention may be designed according to claim 11 or 12.
  • the pressure level can be influenced immediately downstream of the compressed air drive.
  • polishing device 1 serves to polish painted surfaces, eg of vehicle body parts.
  • the polishing apparatus 1 has a polishing pad 2, which is circular in the illustrated embodiment.
  • the polishing pad 2 is brought with its lower surface 3 in abutment against the surface to be polished and set in a rotational movement, so that the lower surface 3 rotates on the surface to be polished with a comparatively high rotational speed.
  • the drive power is transmitted by a drive shaft 5 to the polishing pad 2.
  • a retaining plate 6 is rotatably attached in a suitable manner on the compressed air drive remote end of the drive shaft 5, on which in turn the polishing pad 2 is fixed.
  • To the polishing apparatus 1 further includes a handle 7 through which drive compressed air 8 is guided to the compressed air drive 4.
  • a throttle valve To control the mass flow of the drive pressure air 8, a throttle valve, not shown in the figures, is provided in the handle 7, which is adjustable by means of a handle 9 which is articulated on the handle 7.
  • the drive compressed air 8 is guided by a provided in a housing 10 of the polishing device 1 and the compressed air drive 4 compressed air channel 11 to the pneumatic drive 4, which is formed in the illustrated embodiment as a constant pressure turbine 4.
  • the drive pressure air 8 is first guided over paddle wheels 12 of a turbine rotor 13 of the DC turbine 4, then enters a arranged in the housing of the pneumatic drive 4 and the constant pressure turbine 4 reversing chamber 14 and then, as best of FIG. 3 emerges again guided over the paddle wheels 12 of the turbine rotor 13. Thereafter, the driving compressed air 8 enters a space formed in the constant pressure turbine gap 15 and is introduced from there into a hollow channel 16 which is formed in the drive shaft 5, which produces the drive connection between the DC turbine 4 on the one hand and the polishing pad 2 on the other. Between the DC turbine 4 and provided with the hollow channel 16 drive shaft 5, a speed-reducing transmission 17 is arranged.
  • the equal pressure turbine side gap 15 with a centrally formed in the polishing pad 2 cavity 18 connecting hollow channel 16 of the drive shaft 5 forms with the gap 15 and the cavity 18 a Druckbuchleitvoriques 15, 16, 18, by means of the drive pressure air 8, after the compressed air drive or the Equal pressure turbine 4 of the polishing device has driven, is guided to the polishing pad 2.
  • the polishing pad 2 is formed with from the cavity 18 to the peripheral edge 19 of the polishing pad 2 extending air channels 20.
  • the air channels 20 form a blade grid in the region of the polishing pad arranged on the lower surface 3 or near the lower surface 3, with the result that the polishing pad 2 operates like a radial flow machine.
  • the upstream of the formed in the drive shaft 5 hollow channel 16 serving as a drive medium for the constant pressure turbine 4 of the polishing device 1 driving compressed air, which is relaxed during operation of the constant pressure turbine 4 and thus cooler, is used in the region of the polishing pad 2 of the polishing device 1 as a cooling medium by means of which at the relative movement between the polishing pad 2 on the one hand and the surface to be polished on the other hand heat can be selectively removed and controlled from the area of the polishing pad 2.
  • the driving compressed air 8 which cools down strongly in the region of the constant pressure turbine 4 is thus used in the context of secondary use for the removal of the heat energy generated during the polishing process.
  • the driving compressed air 8 as indicated by the arrow in FIG. 1 represented, led by the handle 7 to the constant pressure turbine 4.
  • the throttle valve provided on or in the handle 7, the mass flow of the driving compressed air 8 can be controlled.
  • the driving compressed air 8 is guided during passage through the constant pressure turbine 4 by means of the reversing chamber 14 so that it passes through the paddle wheels 12 of the turbine rotor 13 twice. After passing twice the paddle wheels 12, the drive pressure air 8 is supplied through the gap 15 in the constant pressure turbine 4 to the formed in the drive shaft 5 hollow channel 16. When passing through the constant pressure turbine 4, the drive pressure air 8 has cooled strongly.
  • the unobstructed outflow of the driving compressed air 8 is ensured in the region of the polishing pad 2 in that the polishing pad 2 - as already mentioned above - is designed by means of the air channels 20 as a radial flow machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Description

Die Erfindung bezieht sich auf eine Poliervorrichtung nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a polishing apparatus according to the preamble of patent claim 1.

Um den Poliervorgang zu optimieren und insbesondere, um die dabei entstehende Reibungs- bzw. Abwärme zu beseitigen, ist es bekannt, Kühlluft einzusetzen. Eine entsprechende Poliervorrichtung ist in der EP 0 691 181 A1 gezeigt. Bei dieser bekannten Poliervorrichtung ist bereits ein Druckluftantrieb vorgesehen. Der der Poliervorrichtung zugeführte Druckluftstrom wird stromauf des Druckluftantriebs aufgeteilt. Ein Teil dieses Druckluftstroms treibt den Druckluftantrieb der Poliervorrichtung an, während der andere Teil des Druckluftstroms als Kühlluft der Bearbeitungsfläche bzw. der Kontaktfläche zwischen einer Polierscheibe der Poliervorrichtung und der zu behandelnden lackierten Oberfläche zugeführt wird. Diese bekannte Poliervorrichtung hat einen vergleichsweise komplizierten technisch-konstruktiven Aufbau und darüber hinaus einen vergleichsweise hohen Druckluft- und Energieverbrauch.In order to optimize the polishing process and in particular to eliminate the resulting frictional or waste heat, it is known to use cooling air. A corresponding polishing device is in the EP 0 691 181 A1 shown. In this known polishing device, a pneumatic drive is already provided. The compressed air flow supplied to the polishing device is split upstream of the pneumatic drive. A part of this compressed air flow drives the pneumatic drive of the polishing apparatus, while the other part of the compressed air flow is supplied as cooling air to the processing surface or contact surface between a polishing pad of the polishing apparatus and the painted surface to be treated. This known polishing device has a comparatively complicated technical-constructive structure and beyond a comparatively high compressed air and energy consumption.

Aus der US 3 760 447 A ist eine Poliervorrichtung bekannt, die zum Polieren lackierter Oberflächen eingesetzt werden kann. Zu dieser Poliervorrichtung gehört ein zentrisch rotierbares eigentliches Polierteil, welches in einem Ausführungsbeispiel als scheibenförmige Bürste ausgebildet ist. Dieses Polierteil ist mit seiner Unterfläche in Anlage an die zu polierende Oberfläche bringbar. Zu der Poliervorrichtung gehört ein Druckluftantrieb, mittels dem das Polierteil bzw. die Bürste rotierbar ist. Die Antriebsdruckluft, mittels der der Druckluftantrieb betrieben wird, wird von der Außenseite des Druckluftantriebs zum Polierteil bzw. zur Bürste geleitet.From the US Pat. No. 3,760,447 For example, a polishing apparatus is known which can be used to polish painted surfaces. To this polishing device belongs a centrally rotatable actual polishing part, which is formed in one embodiment as a disc-shaped brush. This polished part is with his Lower surface can be brought into contact with the surface to be polished. The polishing device includes a pneumatic drive, by means of which the polishing part or the brush is rotatable. The drive compressed air, by means of which the compressed air drive is operated, is directed from the outside of the compressed air drive to the polishing part or to the brush.

Die US 5 218 790 A und die NL 7 601 835 A zeigen jeweils Schleifvorrichtungen, bei denen im eigentlichen Schleifglied Absaugkanäle ausgebildet sind, mittels denen beim Schleifvorgang anfallende Teilchen aus dem Bereich der zu schleifenden Fläche abgesaugt werden sollen. Dies geschieht mit Hilfe von einer innerhalb der jeweiligen Schleifvorrichtung ausgebildeten Saug- bzw. Unterdruckvorrichtung, durch die eine Luftströmung erzeugt wird, mittels der die vorstehend erwähnten Teilchen in das Geräteinnere bewegt werden.The US 5 218 790 A and the NL 7 601 835 A each show grinding devices in which suction channels are formed in the actual grinding member, by means of which are obtained during the grinding process resulting particles from the area to be ground surface to be vacuumed. This is done by means of a vacuum device formed inside the respective grinding device, by means of which an air flow is generated by means of which the abovementioned particles are moved into the interior of the device.

Aus der EP 0 050 233 A2 ist eine Diamantschleifscheibe für die Steinbearbeitung bekannt, die Bestandteil einer Schleifvorrichtung bzw. Schleifmaschine ist.From the EP 0 050 233 A2 a diamond grinding wheel for stone working is known, which is part of a grinding device or grinding machine.

Die JP 2001 293664 A zeigt eine Poliervorrichtung, bei der im eigentlichen Polierkissen keine in Radialrichtung zum Außenumfang verlaufende Luftkanäle vorgesehen sind. Die Luftkanäle sind an der Rückseite des eigentlichen Polierteils angeordnet und in dessen Trägerscheibe ausgebildet. An der Polierfläche sind keinerlei Luftkanäle vorgesehen, die zum Außenumfang des eigentlichen Polierteils führen. Darüber hinaus wird bei dieser bekannten Poliervorrichtung keine Antriebsdruckluft eingesetzt.The JP 2001 293664 A shows a polishing apparatus in which no actual radially extending to the outer circumference air channels are provided in the actual polishing pad. The air ducts are arranged on the back of the actual polishing part and formed in the carrier disk. At the polishing surface no air channels are provided, leading to the outer periphery of the actual polishing. In addition, no drive compressed air is used in this known polishing device.

Aus der DE 20 2006 011 778 U1 ist ein Polierschwamm bekannt, in dessen Polierfläche Einkerbungen ausgebildet sind. Diese Einkerbungen enden innerhalb des Polierschwamms und reichen nicht bis zum Außenumfang desselben.From the DE 20 2006 011 778 U1 a polishing sponge is known, in the polishing surface notches are formed. These notches end within the polishing sponge and do not extend to the outer periphery of the same.

Aus der DE 11 95 632 B ist eine Einrichtung zur Förderung und Verteilung des Bearbeitungsmittels für ein Werkzeug zum Bearbeiten eines Glasbandes bekannt, welche auch zu Polierzwecken eingesetzt werden kann. Hierbei wird mit einem ringförmigen Filzbelag auf eine zu bearbeitende Fläche eingewirkt. An der Unterseite des Filzbelags sind Schlitze ausgebildet. Diese Schlitze dienen der Verteilung eines Poliermittelgemisches auf der Bearbeitungsfläche. Keiner dieser Schlitze führt vom Zentralbereich des Filzbelags zu dessen Außenumfang. Vielmehr sind radial innere Schlitze vorgesehen, die von einem zentralen Bereich radial auswärts führen, jedoch an ihren radial äußeren Enden - innerhalb des Filzbelags - geschlossen sind. Radial äußere Schlitze sind versetzt zu den radial inneren Schlitzen im Filzbelag ausgebildet. Die radial inneren Enden dieser Schlitze bzw. Einschnitte enden ebenfalls innerhalb des Filzbelags.From the DE 11 95 632 B a device for conveying and distributing the processing means for a tool for processing a glass ribbon is known, which can also be used for polishing purposes. Here, an annular felt covering acts on a surface to be processed. Slits are formed on the underside of the felt cover. These slots serve to distribute a polishing agent mixture on the processing surface. None of these slots leads from the central area of the felt covering to its outer periphery. Rather, radially inner slots are provided which lead radially outward from a central region, but are closed at their radially outer ends - within the felt lining. Radially outer slots are offset from the radially inner slots in the felt lining. The radially inner ends of these slots or cuts also end within the felt cover.

Ausgehend von dem vorstehend geschilderten Stand der Technik gemäß der EP 0 691 181 liegt der Erfindung die Aufgabe zugrunde, bei einer derartigen Poliervorrichtung eine verbesserte Kühlwirkung an der zu polierenden Oberfläche zu realisieren.Starting from the above-described prior art according to the EP 0 691 181 The object of the invention is to realize an improved cooling effect on the surface to be polished in the case of such a polishing device.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale im kennzeichnenden Teil des Patentanspruchs 1 gelöst.This object is achieved by the features in the characterizing part of patent claim 1.

Erfindungsgemäß wird die den Druckluftantrieb beaufschlagende Antriebsdruckluft nach ihrer mit einer erheblichen Abkühlung einhergehenden Entspannung im Druckluftantrieb noch einmal als Kühlluft an der Berührungsfläche zwischen dem Polierkissen und der zu behandelnden Oberfläche genutzt. Mittels der Kühlluft wird gezielt an der aktuellen Bearbeitungsfläche ein optimaler Abtransport der dort entstehenden Wärmeenergie gewährleistet, wobei darüber hinaus ein beschleunigter Abtransport der Lösungsmittel aus dem frischen Lack gesichert werden kann. Die gesamte Poliervorrichtung zugeführte Druckluft wird sowohl als Antriebsdruckluft als auch als Kühlluft eingesetzt. Der Wirkungsgrad der erfindungsgemäßen Poliervorrichtung ist im Vergleich zu aus dem Stand der Technik bekannten derartigen Vorrichtung erheblich erhöht.According to the invention, the compressed air drive acting on the drive compressed air is used after its associated with a considerable cooling relaxation in the compressed air drive once again as cooling air at the interface between the polishing pad and the surface to be treated. By means of the cooling air, optimum removal of the heat energy arising therefrom is ensured in a targeted manner on the current processing surface, wherein, moreover, accelerated removal of the solvents from the fresh paint can be ensured. The entire polishing device supplied compressed air is used both as driving compressed air and as cooling air. The efficiency of the polishing apparatus according to the invention is considerably increased in comparison to such a device known from the prior art.

Die Antriebsdruckluft, nachdem sie den Druckluftantrieb durchströmt hat, entspannt und damit abgekühlt wurde, kann mit geringen technisch-konstruktiven Mitteln zum Polierkissen geleitet werden.The drive compressed air, after it has flowed through the compressed air drive, relaxed and thus cooled, can be passed to the polishing pad with little technical-constructive means.

Bei einer Poliervorrichtung gemäß Patentanspruch 2 kann die an der Unterfläche des Polierkissens strömende Luft in optimaler Weise ihre Wirkung als Kühlluft entfalten.In a polishing apparatus according to claim 2, the air flowing on the lower surface of the polishing pad can optimally exert its effect as cooling air.

Bei einer Poliervorrichtung gemäß Patentanspruch 3 kann die Unterfläche des Polierkissens ungestört und vollflächig ausgestaltet sein, mit den daraus resultierenden Vorteilen für den Poliervorgang.In a polishing apparatus according to claim 3, the lower surface of the polishing pad can be designed undisturbed and over the entire surface, with the resulting advantages for the polishing process.

Bei einer Poliervorrichtung gemäß den Patentansprüchen 4 und 5 ergeben sich Vorteile und Erleichterungen bei der Bedienung. Bei einer Poliervorrichtung gemäß Patentanspruch 6 wird der Druckluftantrieb als solcher bereits mit einem möglichst hohen Wirkungsgrad ausgestaltet.In a polishing apparatus according to claims 4 and 5, there are advantages and ease of operation. In a polishing apparatus according to claim 6, the compressed air drive is designed as such already with the highest possible efficiency.

Bei einer Poliervorrichtung gemäß Patentanspruch 7 wird die Nutzung der die Gleichdruckturbine beaufschlagenden Antriebsdruckluft als Kühlluft in konstruktiv-technisch wenig aufwendiger Weise möglich gemacht.In a polishing apparatus according to claim 7, the use of the impulse turbine impinging drive compressed air is made possible as cooling air in a constructive and technically less complicated manner.

Bei einer Poliervorrichtung gemäß Patentanspruch 8 kann die Abkühlung der den Druckluft-antrieb verlassenden Antriebsdruckluft erhöht werden.In a polishing apparatus according to claim 8, the cooling of the compressed air drive leaving the drive compressed air can be increased.

Bei einer Poliervorrichtung gemäß Patentanspruch 9 kann für das Polierkissen ein optimaler Drehzahlbereich zur Verfügung gestellt werden.In a polishing apparatus according to claim 9, an optimum speed range can be provided for the polishing pad.

Bei einer Poliervorrichtung gemäß Patentanspruch 10 wird ein Abwürgen des Druckluftantriebs der Poliervorrichtung in jedem Fall zuverlässig vermieden, sofern der Anpressdruck der Poliervorrichtung auf die Bearbeitungsfläche nicht den für eine fachmännische Bearbeitung zulässigen Wert übersteigt.In a polishing apparatus according to claim 10, a stalling of the pneumatic drive of the polishing apparatus is reliably avoided in each case, provided that the contact pressure of the polishing apparatus on the processing surface does not exceed the permissible value for expert processing.

Je nach Anforderungsprofil kann die erfindungsgemäße Poliervorrichtung gemäß Patentanspruch 11 oder 12 gestaltet sein. Bei einer Ausgestaltung des Schaufelgitters als Turbine bzw. als Verdichter kann das Druckniveau unmittelbar stromab des Druckluftantriebs beeinflusst werden. Somit ist es möglich, den thermodynamischen Gesamtwirkungsgrad der Poliervorrichtung und somit der Kühlleistung positiv zu beeinflussen.Depending on the requirement profile, the polishing device according to the invention may be designed according to claim 11 or 12. In one embodiment of the blade grid as a turbine or as a compressor, the pressure level can be influenced immediately downstream of the compressed air drive. Thus, it is possible to positively influence the overall thermodynamic efficiency of the polishing apparatus and thus the cooling performance.

Die praktische Anwendbarkeit der erfindungsgemäßen Poliervorrichtung wird durch die Merkmale des Patentanspruchs 13 weiter erhöht.The practical applicability of the polishing apparatus according to the invention is further enhanced by the features of claim 13.

Im Folgenden wird die Erfindung anhand einer Ausführungsform unter Bezugnahme auf die Zeichnung näher erläutert.In the following the invention will be explained in more detail with reference to an embodiment with reference to the drawing.

Es zeigen:

Figur 1
eine Schnittdarstellung einer Ausführungsform einer erfindungsgemäßen Poliervorrichtung;
Figur 2
eine Unteransicht eines Polierkissens der in Figur 1 gezeigten Ausführungsform der erfindungsgemäßen Poliervorrichtung; und
Figur 3
eine Prinzipdarstellung eines Druckluftantriebs der in Figur 1 gezeigten Ausführungsform der erfindungsgemäßen Poliervorrichtung.
Show it:
FIG. 1
a sectional view of an embodiment of a polishing apparatus according to the invention;
FIG. 2
a bottom view of a polishing pad of in FIG. 1 shown embodiment of the polishing device according to the invention; and
FIG. 3
a schematic diagram of a pneumatic drive of in FIG. 1 shown embodiment of the polishing device according to the invention.

Eine im Folgenden anhand der Figuren 1 bis 3 erläuterte Ausführungsform einer erfindungsgemäßen Poliervorrichtung 1 dient dazu, lackierte Oberflächen, z.B. von Fahrzeugkarosserieteilen, zu polieren.One below based on the FIGS. 1 to 3 explained embodiment of a polishing device 1 according to the invention serves to polish painted surfaces, eg of vehicle body parts.

Hierzu hat die Poliervorrichtung 1 ein Polierkissen 2, welches in der dargestellten Ausführungsform kreisförmig ausgebildet ist. Das Polierkissen 2 wird mit seiner Unterfläche 3 in Anlage an die zu polierende Oberfläche gebracht und in eine Rotationsbewegung versetzt, so dass die Unterfläche 3 auf der zu polierenden Oberfläche mit einer vergleichsweise hohen Drehgeschwindigkeit rotiert.For this purpose, the polishing apparatus 1 has a polishing pad 2, which is circular in the illustrated embodiment. The polishing pad 2 is brought with its lower surface 3 in abutment against the surface to be polished and set in a rotational movement, so that the lower surface 3 rotates on the surface to be polished with a comparatively high rotational speed.

Zur Erzeugung der Rotationsbewegung dient ein Druckluftantrieb 4, dessen Antriebsenergie mittels einer Antriebswelle 5 zum Polierkissen 2 übertragen wird.To generate the rotational movement is a compressed air drive 4, the drive power is transmitted by a drive shaft 5 to the polishing pad 2.

Hierzu ist am druckluftantriebsfernen Ende der Antriebswelle 5 ein Halteteller 6 in geeigneter Weise drehfest angebracht, an dem seinerseits das Polierkissen 2 fixiert ist.For this purpose, a retaining plate 6 is rotatably attached in a suitable manner on the compressed air drive remote end of the drive shaft 5, on which in turn the polishing pad 2 is fixed.

Zur Poliervorrichtung 1 gehört des Weiteren ein Handgriff 7, durch den hindurch Antriebsdruckluft 8 zum Druckluftantrieb 4 geführt wird. Zur Regelung des Massenstroms der Antriebsdruckluft 8 ist im Handgriff 7 ein in den Figuren nicht gezeigtes Drosselventil vorgesehen, welches mittels einer am Handgriff 7 angelenkten Handhabe 9 verstellbar ist.To the polishing apparatus 1 further includes a handle 7 through which drive compressed air 8 is guided to the compressed air drive 4. To control the mass flow of the drive pressure air 8, a throttle valve, not shown in the figures, is provided in the handle 7, which is adjustable by means of a handle 9 which is articulated on the handle 7.

Die Antriebsdruckluft 8 wird durch einen in einem Gehäuse 10 der Poliervorrichtung 1 bzw. des Druckluftantriebs 4 vorgesehenen Druckluftkanal 11 zum Druckluftantrieb 4 geführt, der im dargestellten Ausführungsbeispiel als Gleichdruckturbine 4 ausgebildet ist.The drive compressed air 8 is guided by a provided in a housing 10 of the polishing device 1 and the compressed air drive 4 compressed air channel 11 to the pneumatic drive 4, which is formed in the illustrated embodiment as a constant pressure turbine 4.

Aus dem Druckluftkanal 11 wird die Antriebsdruckluft 8 zunächst über Schaufelräder 12 eines Turbinenrotors 13 der Gleichstromturbine 4 geführt, tritt dann in eine im Gehäuse des Druckluftantriebs 4 bzw. der Gleichdruckturbine 4 angeordnete Umkehrkammer 14 ein und wird dann, wie am besten aus Figur 3 hervorgeht, erneut über die Schaufelräder 12 des Turbinenrotors 13 geführt. Danach tritt die Antriebsdruckluft 8 in einen in der Gleichdruckturbine ausgebildeten Zwischenraum 15 ein und wird von dort in einen Hohlkanal 16 eingeleitet, der in der Antriebswelle 5 ausgebildet ist, die die Antriebsverbindung zwischen der Gleichstromturbine 4 einerseits und dem Polierkissen 2 andererseits herstellt. Zwischen der Gleichstromturbine 4 und der mit dem Hohlkanal 16 versehenen Antriebswelle 5 ist ein drehzahlreduzierendes Getriebe 17 angeordnet.From the compressed air channel 11, the drive pressure air 8 is first guided over paddle wheels 12 of a turbine rotor 13 of the DC turbine 4, then enters a arranged in the housing of the pneumatic drive 4 and the constant pressure turbine 4 reversing chamber 14 and then, as best of FIG. 3 emerges again guided over the paddle wheels 12 of the turbine rotor 13. Thereafter, the driving compressed air 8 enters a space formed in the constant pressure turbine gap 15 and is introduced from there into a hollow channel 16 which is formed in the drive shaft 5, which produces the drive connection between the DC turbine 4 on the one hand and the polishing pad 2 on the other. Between the DC turbine 4 and provided with the hollow channel 16 drive shaft 5, a speed-reducing transmission 17 is arranged.

Der den gleichdruckturbinenseitigen Zwischenraum 15 mit einem mittig im Polierkissen 2 ausgebildeten Hohlraum 18 verbindende Hohlkanal 16 der Antriebswelle 5 bildet mit dem Zwischenraum 15 und dem Hohlraum 18 eine Druckluftleitvorrichtung 15, 16, 18, mittels der die Antriebsdruckluft 8, nachdem sie den Druckluftantrieb bzw. die Gleichdruckturbine 4 der Poliervorrichtung angetrieben hat, zum Polierkissen 2 geführt wird.The equal pressure turbine side gap 15 with a centrally formed in the polishing pad 2 cavity 18 connecting hollow channel 16 of the drive shaft 5 forms with the gap 15 and the cavity 18 a Druckluftleitvorrichtung 15, 16, 18, by means of the drive pressure air 8, after the compressed air drive or the Equal pressure turbine 4 of the polishing device has driven, is guided to the polishing pad 2.

Wie sich am besten aus Figur 2 ergibt, ist das Polierkissen 2 mit vom Hohlraum 18 sich zum Umfangsrand 19 des Polierkissens 2 erstreckenden Luftkanälen 20 ausgebildet. Die Luftkanäle 20 bilden im an der Unterfläche 3 bzw. nahe der Unterfläche 3 angeordneten Bereich des Polierkissens ein Schaufelgitter, mit der Folge, dass das Polierkissen 2 wie eine radiale Strömungsmaschine arbeitet.How to look best FIG. 2 shows, the polishing pad 2 is formed with from the cavity 18 to the peripheral edge 19 of the polishing pad 2 extending air channels 20. The air channels 20 form a blade grid in the region of the polishing pad arranged on the lower surface 3 or near the lower surface 3, with the result that the polishing pad 2 operates like a radial flow machine.

Die stromauf des in der Antriebswelle 5 ausgebildeten Hohlkanals 16 als Antriebsmedium für die Gleichdruckturbine 4 der Poliervorrichtung 1 dienende Antriebsdruckluft, die beim Betrieb der Gleichdruckturbine 4 entspannt und damit kühler wird, dient im Bereich des Polierkissens 2 der Poliervorrichtung 1 als Kühlmedium, mittels dem die bei der Relativbewegung zwischen dem Polierkissen 2 einerseits und der zu polierenden Oberfläche andererseits entstehende Wärme gezielt und gesteuert aus dem Bereich des Polierkissens 2 abtransportiert werden kann. Im Falle der vorstehend geschilderten Poliervorrichtung 1 wird somit die Antriebsdruckluft 8, die im Bereich der Gleichdruckturbine 4 stark abkühlt, im Rahmen einer Sekundärnutzung zum Abtransport der beim Poliervorgang erzeugten Wärmeenergie genutzt.The upstream of the formed in the drive shaft 5 hollow channel 16 serving as a drive medium for the constant pressure turbine 4 of the polishing device 1 driving compressed air, which is relaxed during operation of the constant pressure turbine 4 and thus cooler, is used in the region of the polishing pad 2 of the polishing device 1 as a cooling medium by means of which at the relative movement between the polishing pad 2 on the one hand and the surface to be polished on the other hand heat can be selectively removed and controlled from the area of the polishing pad 2. In the case of the above-described polishing apparatus 1, the driving compressed air 8, which cools down strongly in the region of the constant pressure turbine 4, is thus used in the context of secondary use for the removal of the heat energy generated during the polishing process.

Im Betrieb der vorstehend geschilderten erfindungsgemäßen Poliervorrichtung 1 wird die Antriebsdruckluft 8, wie durch den Pfeil in Figur 1 dargestellt, durch den Handgriff 7 zur Gleichdruckturbine 4 geführt. Mittels des am bzw. im Handgriff 7 vorgesehenen Drosselventils kann der Massenstrom der Antriebsdruckluft 8 gesteuert werden.In operation of the above-described polishing apparatus 1 according to the invention, the driving compressed air 8, as indicated by the arrow in FIG FIG. 1 represented, led by the handle 7 to the constant pressure turbine 4. By means of the throttle valve provided on or in the handle 7, the mass flow of the driving compressed air 8 can be controlled.

Die Antriebsdruckluft 8 wird beim Durchtritt durch die Gleichdruckturbine 4 mittels der Umkehrkammer 14 so geführt, dass sie die Schaufelräder 12 des Turbinenrotors 13 zweimal passiert. Nach dem zweimaligen Passieren der Schaufelräder 12 wird die Antriebsdruckluft 8 durch den Zwischenraum 15 in der Gleichdruckturbine 4 dem in der Antriebswelle 5 ausgebildeten Hohlkanal 16 zugeführt. Beim Durchtritt durch die Gleichdruckturbine 4 hat sich die Antriebsdruckluft 8 stark abgekühlt.The driving compressed air 8 is guided during passage through the constant pressure turbine 4 by means of the reversing chamber 14 so that it passes through the paddle wheels 12 of the turbine rotor 13 twice. After passing twice the paddle wheels 12, the drive pressure air 8 is supplied through the gap 15 in the constant pressure turbine 4 to the formed in the drive shaft 5 hollow channel 16. When passing through the constant pressure turbine 4, the drive pressure air 8 has cooled strongly.

Durch den Hohlkanal 16 strömt die nunmehr abgekühlte Antriebsdruckluft 8 der mittels des Polierkissens 2 bearbeiteten Oberfläche entgegen.Through the hollow channel 16, the now cooled drive compressed air 8 flows against the surface processed by means of the polishing pad 2.

Die ungehinderte Abströmung der Antriebsdruckluft 8 wird im Bereich des Polierkissens 2 dadurch gewährleistet, dass das Polierkissen 2 - wie vorstehend bereits erwähnt - mittels der Luftkanäle 20 als radiale Strömungsmaschine gestaltet ist.The unobstructed outflow of the driving compressed air 8 is ensured in the region of the polishing pad 2 in that the polishing pad 2 - as already mentioned above - is designed by means of the air channels 20 as a radial flow machine.

Durch die abgekühlte Antriebsdruckluft 8 wird eine Kühlung der behandelten Oberfläche gewährleistet, wobei darüber hinaus für einen beschleunigten Abtransport der Lösungsmittel aus dem frischen Lack gesorgt werden kann.Due to the cooled drive compressed air 8, a cooling of the treated surface is ensured, in addition, can be provided for an accelerated removal of the solvent from the fresh paint beyond.

Claims (13)

  1. A polishing device (1) for polishing painted surfaces, comprising a centrically or eccentrically rotatable polishing pad (2) that can be brought with its lower surface (3) into engagement with the surface to be polished, and comprising a compressed-air drive (4), by means of which the polishing pad (2) can be rotated, wherein between the compressed-air drive (4) and the polishing pad (2) there is arranged a compressed-air guiding device (15, 16, 18) by means of which the compressed air for driving (8) the compressed-air drive (4) can be guided from the outside thereof to the polishing pad (2), and the compressed-air guiding device (15, 16, 18) is formed as a hollow channel (16) in a drive shaft (5) which connects the compressed-air drive (4) to the polishing pad (2), and at the drive shaft's ends remote from the compressed-air drive, the polishing pad (2) is fastened by means of a holding plate (6), characterized in that the polishing pad is provided in the region of its lower surface (3) with air channels (20) through which the compressed air for driving (8) can be conveyed from a middle region of the lower surface (3) of the polishing pad (2) to the circumferential edge (19) of the polishing pad (2).
  2. The polishing device according to claim 1, wherein the air channels (20) formed in the region of the lower surface (3) of the polishing pad (2) are open at the lower surface (3) of the polishing pad (2).
  3. The polishing device according to claim 1, wherein the air channels (20) formed in the region of the lower surface (3) of the polishing pad (2) are closed at the lower surface (3) of the polishing pad (2).
  4. The polishing device according to any one of the claims 1 to 3, comprising a handle (7) through which the compressed air for driving (8) can be fed to the compressed-air drive (4).
  5. The polishing device according to claim 4, comprising a throttle valve, the actuator (9) of which is arranged on the handle (7) and by means of which the mass flow of the compressed air for driving (8) can be controlled.
  6. The polishing device according to any one of the claims 1 to 5, the compressed-air drive of which is formed as an impulse turbine (4) having a turbine rotor (13) and a reversal chamber (14) so that the compressed air for driving (8) passes impellers (12) of the turbine rotor (13) at least twice.
  7. The polishing device according to claim 6, wherein the impulse turbine (4) has an intermediate space (15) through which the compressed air for driving (8), after passing the impellers (12) of the turbine rotor twice, can be conveyed to the compressed-air guiding device (15, 16, 18) arranged between the impulse turbine (4) and the polishing pad (2).
  8. The polishing device according to any one of the claims 1 to 7, wherein the hollow channel (16) is formed as a diffusor.
  9. The polishing device according to any one of the claims 1 to 8, wherein a speed-reduced gear unit (17) is arranged between the compressed-air drive (4) and the drive shaft (5).
  10. The polishing device according to any one of the claims 1 to 9, wherein the polishing pad (2), by means of the air channels (20) that are provided therein and form a cascade, is configured as a radial fluid-flow machine.
  11. The polishing device according to claim 10, wherein the cascade formed by the air channels is configured as a turbine.
  12. The polishing device according to claim 10, wherein the cascade formed by the air channels is configured as a compressor.
  13. The polishing device according to any one of the claims 1 to 12, the polishing pad (2) of which is formed from a material that is dimensionally stable up to a limit pressure and that deforms elastically upon exceeding the limit pressure.
EP10002148.4A 2009-03-14 2010-03-03 Polishing or grinding device with a pneumatic drive Not-in-force EP2228173B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE202010013895U DE202010013895U1 (en) 2009-03-14 2010-03-03 Polishing or grinding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910013263 DE102009013263A1 (en) 2009-03-14 2009-03-14 Polishing or grinding device

Publications (3)

Publication Number Publication Date
EP2228173A2 EP2228173A2 (en) 2010-09-15
EP2228173A3 EP2228173A3 (en) 2011-05-25
EP2228173B1 true EP2228173B1 (en) 2014-09-10

Family

ID=42199389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10002148.4A Not-in-force EP2228173B1 (en) 2009-03-14 2010-03-03 Polishing or grinding device with a pneumatic drive

Country Status (2)

Country Link
EP (1) EP2228173B1 (en)
DE (2) DE102009013263A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010006122A1 (en) 2010-01-26 2011-07-28 Kochanski, Boris, Dipl.-Ing., 46240 Compressed air operated machine mainly for polishing or grinding a workpiece with cooling thereof, generated by unused drive power
US8303380B2 (en) 2010-01-26 2012-11-06 Dynabrade, Inc. Abrading device having a front exhaust
DE202011004232U1 (en) 2011-03-21 2011-05-26 Kochanski, Boris, Dipl.-Ing., 46240 Eccentric polishing or grinding device with cooling by driving compressed air
DE102011014653A1 (en) 2011-03-21 2012-09-27 Boris Kochanski Polishing or grinding device i.e. pressurized air power tool, for polishing or grinding coated surface i.e. motor car part, in automobile industry, has pressurized air guide device comprising work spindle rotatable in air guidance cup
CN105415157A (en) * 2015-11-26 2016-03-23 安徽鼎远金属制品有限公司 Polishing device for damping framework
CN106363515B (en) * 2016-11-14 2018-07-10 无锡溥汇机械科技有限公司 A kind of tap production technology mechanical polishing apparatus
CN109093518B (en) * 2018-09-11 2024-05-03 陕西富泰工业材料科技有限公司 Diamond grinding wheel is with installation protection device
CN111843832B (en) * 2020-07-30 2021-09-07 广东汉岂工业技术研发有限公司 Water-cooled grinding head for chemical mechanical grinding
CN113001381A (en) * 2021-03-23 2021-06-22 合肥中科重明科技有限公司 Surface polishing device for 3D printing blank and operation method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195632B (en) * 1954-09-08 1965-06-24 Glaceries De La Sambre Sa Device for the promotion and distribution of the processing agent for a tool for processing a glass ribbon
EP0050233A2 (en) * 1980-10-22 1982-04-28 J. König GmbH & Co. Werkzeugfabrik, Steinindustrie und Handwerkerbedarf Diamond grinding wheel for processing stone
JP2001293664A (en) * 2000-04-17 2001-10-23 System Foo:Kk Buffing machine
DE20217188U1 (en) * 2002-11-07 2003-02-27 Ewald Schaumstoffe Gmbh & Co K Polishing disc comprising foam material, for e.g. lacquered surfaces of motor vehicles, contains open channel in its top side
DE202006011778U1 (en) * 2006-08-01 2006-10-26 Klaus-Chemie Gmbh Painted surface final coat polishing sponge, has polishing surface enclosed by circular groove such that cube-like structure is formed and surrounding edges, where edges and circular groove are provided with rounding
DE202009007103U1 (en) * 2009-05-16 2010-03-04 Klaus-Chemie Gmbh polishing sponge

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760447A (en) * 1971-09-15 1973-09-25 L Vivion Fluid driven rotary hand tool
CA1027761A (en) * 1975-11-26 1978-03-14 Miksa Marton Vacuum sander
US5218790A (en) * 1992-11-12 1993-06-15 Huang Kan Chi Pneumatically operated debris-removable grinding tool
JPH0811045A (en) 1994-06-30 1996-01-16 Shinano Seisakusho:Kk Polishing tool of pneumatic driving source
DE102005009854A1 (en) * 2005-02-03 2006-08-17 Monti-Werkzeuge Gmbh rotary tool

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195632B (en) * 1954-09-08 1965-06-24 Glaceries De La Sambre Sa Device for the promotion and distribution of the processing agent for a tool for processing a glass ribbon
EP0050233A2 (en) * 1980-10-22 1982-04-28 J. König GmbH & Co. Werkzeugfabrik, Steinindustrie und Handwerkerbedarf Diamond grinding wheel for processing stone
JP2001293664A (en) * 2000-04-17 2001-10-23 System Foo:Kk Buffing machine
DE20217188U1 (en) * 2002-11-07 2003-02-27 Ewald Schaumstoffe Gmbh & Co K Polishing disc comprising foam material, for e.g. lacquered surfaces of motor vehicles, contains open channel in its top side
DE202006011778U1 (en) * 2006-08-01 2006-10-26 Klaus-Chemie Gmbh Painted surface final coat polishing sponge, has polishing surface enclosed by circular groove such that cube-like structure is formed and surrounding edges, where edges and circular groove are provided with rounding
DE202009007103U1 (en) * 2009-05-16 2010-03-04 Klaus-Chemie Gmbh polishing sponge

Also Published As

Publication number Publication date
EP2228173A2 (en) 2010-09-15
DE102009013263A1 (en) 2010-09-16
DE202010013895U1 (en) 2010-12-16
EP2228173A3 (en) 2011-05-25

Similar Documents

Publication Publication Date Title
EP2228173B1 (en) Polishing or grinding device with a pneumatic drive
EP2527089B1 (en) Motor-driven hand-held grinder
EP1778437B1 (en) Hand machine tool, particularly a sanding machine
EP1925401B1 (en) Motor driven hand grinder with adjustable suction mechanism
DE102010017733B4 (en) Tesla turbine and method for converting fluid flow energy into kinetic energy of a shaft of a Tesla turbine
CH442062A (en) Cooled rasping disc
EP2366493B1 (en) Manually operated machine tool with an eccentric drive comprising a rotation angle manager
EP2366494B1 (en) Manually operated machine tool with a forced rotation eccentric drive
DE102004018727A1 (en) Sanding disc with self-suction device and method for removing Schleifpatikeln
EP1923978A2 (en) Eccentric portable grinder with brushless motor
EP2366496B1 (en) Manually operated machine tool with a handle
DE19914956C2 (en) Grinder driven by an electric motor
EP2347857A2 (en) Compressed air-powered machine, primarily for polishing or grinding a workpiece with cooling thereof, generated from unused drive energy
EP2366495B1 (en) Manually operated machine tool with an eccentric drive and a latch
DE102008016081A1 (en) Centrifugal force sliding grinding machine for grinding and/or polishing of workpieces, has outlet for lubricating medium arranged at region of container part, where region is arranged above base part
DE930560C (en) Grinding device for rotating circular knife discs of cutting machines, especially tobacco cutting machines
DE102016226273A1 (en) Abrasives fixture
DE102011014653A1 (en) Polishing or grinding device i.e. pressurized air power tool, for polishing or grinding coated surface i.e. motor car part, in automobile industry, has pressurized air guide device comprising work spindle rotatable in air guidance cup
DE202004006078U1 (en) Rotary grinding or sanding machine head has fan blades and perforated grinding disc by which dust is collected and removed through sealed cover
DE3512569A1 (en) Process and apparatuses for the precision grinding of rotor blades of turbine jet engines or the like
EP1787754B1 (en) Housing for a grinding wheel
DE102011105478A1 (en) Drive machine with energy recovery through a vortex tube
DE202012003731U1 (en) Adapter part for a compressed air-operated hand-held device, in particular hand drill, with front exhaust outlet
DE2332109C3 (en) Motorized hand tools
EP0876877A2 (en) Grinding body

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA ME RS

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA ME RS

RIC1 Information provided on ipc code assigned before grant

Ipc: B24B 55/02 20060101ALI20110420BHEP

Ipc: B24B 23/02 20060101AFI20100604BHEP

17P Request for examination filed

Effective date: 20110906

17Q First examination report despatched

Effective date: 20111222

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502010007831

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: B24B0023020000

Ipc: B24B0029020000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20140429

RIC1 Information provided on ipc code assigned before grant

Ipc: B24B 29/02 20060101AFI20140411BHEP

Ipc: B24D 13/18 20060101ALI20140411BHEP

Ipc: B24D 13/14 20060101ALI20140411BHEP

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 686405

Country of ref document: AT

Kind code of ref document: T

Effective date: 20141015

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502010007831

Country of ref document: DE

Effective date: 20141023

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141210

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141211

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20140910

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150112

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150110

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502010007831

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

26N No opposition filed

Effective date: 20150611

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150303

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150303

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150331

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 686405

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150303

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150303

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20100303

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20180326

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20180326

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140910

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180509

Year of fee payment: 9

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502010007831

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190303

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190303

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190331