EP0095110B1 - Device for regrinding mounted automotive brake discs - Google Patents

Device for regrinding mounted automotive brake discs Download PDF

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Publication number
EP0095110B1
EP0095110B1 EP83104750A EP83104750A EP0095110B1 EP 0095110 B1 EP0095110 B1 EP 0095110B1 EP 83104750 A EP83104750 A EP 83104750A EP 83104750 A EP83104750 A EP 83104750A EP 0095110 B1 EP0095110 B1 EP 0095110B1
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EP
European Patent Office
Prior art keywords
drive
disc
grinding
output shaft
receiving frame
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
EP83104750A
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German (de)
French (fr)
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EP0095110A1 (en
Inventor
Ferenc Nagy
János Dipl.-Ing. Balazs
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.)
Aranykalasz MGTSZ
Original Assignee
Aranykalasz Mgtsz Rackeve
Aranykalasz MGTSZ
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Publication date
Application filed by Aranykalasz Mgtsz Rackeve, Aranykalasz MGTSZ filed Critical Aranykalasz Mgtsz Rackeve
Priority to AT83104750T priority Critical patent/ATE21847T1/en
Publication of EP0095110A1 publication Critical patent/EP0095110A1/en
Application granted granted Critical
Publication of EP0095110B1 publication Critical patent/EP0095110B1/en
Expired legal-status Critical Current

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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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
    • 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
    • B24B23/08—Portable grinding machines designed for fastening on workpieces or other parts of particular section, e.g. for grinding commutators

Definitions

  • the invention relates to a grinding device designed for regrinding the brake disc of a motor vehicle disc brake, which is suitable for regrinding the worn brake disc of any type without having to disassemble the wheel hub and the brake disc.
  • a grinding device according to the introductory part of claim 1 is known from GB-A-2 085 773.
  • Such a grinding device has the advantage that the brake disc can be reground without having to remove it from the motor vehicle.
  • the two output shafts of the drive motor which is not arranged on the grinding device itself, are designed as flexible shafts, as a result of which the maximum speed of the grinding wheel is limited.
  • the speed reduction of the reduction gear for rotating the brake disc is two to one, so that it is rotated relatively quickly in comparison with the grinding wheel, which affects the machining accuracy.
  • the invention solves the problem of creating a grinding device for brake discs, with which - according to modern requirements - the repair of a worn brake disc can be carried out economically in a short time by grinding precisely to size.
  • the invention therefore provides a grinding device by means of which the brake discs can be re-ground in their installed position.
  • the grinding device is attached to the holder of the working cylinder of the disc brakes. In addition to performing the surface grinding on both sides of the brake disc, it is rotated continuously during grinding.
  • the holder 5 of the Häzylinclers the disc brake can be seen.
  • the grinding device is fastened to this holder 5 by means of a support block 19.
  • Several special bores are formed on the support bracket 19 so that the grinding device can be used universally regardless of the current position of the holder 5 and the current brake disc diameter.
  • two guide tubes 17 projecting from the support bracket 19 on both sides thereof, each for a sliding sleeve 18, are fastened, the sliding sleeves 18 being designed in such a way that they can be adjusted at four adjustment points.
  • a support frame 21 is attached to the support bracket 19, on which the drive frame 21, which is explained in detail below, is preferably attached by means of screws.
  • an adjusting screw 20 is provided which projects through a threaded hole on the support bracket 19 and is held axially fixed but rotatable in the receiving frame 21.
  • the drive 23, which is fastened to the receiving frame 21 on one side of the support bracket 19, can contain an electric motor or a pneumatic motor.
  • the drive is provided with an electric motor 22, to the output shaft 14 of which a gear is connected, which consists of gear wheels 12, 13 and a worm gear 10, 11.
  • the gear of the drive 23 is designed as a branching gear, one output shaft 15, on which a grinding wheel 16 is seated, is driven at high speed via the bevel gears 12, 13 and the other output shaft 9 is driven at low speed via the worm gear 10, 11.
  • the drive pulley 7 of a friction wheel 4 is driven, which is mounted with its shaft 3 perpendicularly to the support bracket 19 and rests on the peripheral edge of the grinding wheel 6, so that it is by means of the friction wheel 4 is continuously rotated during the grinding process.
  • the shaft 15 of the grinding wheel 16 runs perpendicular to the surface of the brake wheel 6 to be machined.
  • the grinding device can also be provided with two grinding wheels 16. An embodiment of this is shown in FIGS. 3 and 4.
  • a carriage 25 is movably mounted on the receiving frame 27 and the inner drive 24 of the second grinding wheel 16 is fastened to the carriage 25.
  • the drive 23 already known from the first exemplary embodiment is fastened to the receiving frame 27, so that the two drives 23, 24 with their grinding disks 16 encompass the brake disk 6 on both sides.
  • the adjusting spindle 28 or adjusting spindle 26 connected to the guide tube or the guide tubes 17 are used to adjust the two grinding wheels 16 against one another and with respect to the support bracket 19.
  • the other structural components correspond to those of the embodiment from FIG. 1.
  • the primary movement performs the grinding wheel 16.
  • the brake disc 6 is driven via the worm gear 10, 11 mounted on the output shaft 14, the V-belt 1 and the friction wheel 4 pressed against the circumferential surface of the brake disc 6 at the side of the grinding disc 16.
  • the drive 23 together with the grinding wheel 16, the worm gear 10, 11 and its driven pulley 8 can be implemented on the opposite side of the receiving frame 21.
  • the friction wheel 4 can also be driven from this side, it has a drive pulley 2, 7 on its drive shaft 3 on both sides of the support bracket 19, so that it can be driven by means of the belt 1 either via a drive pulley 7 or the other drive pulley 2 and the auxiliary gear of the drive 23 can be driven, which consists of the shaft 9 with the driven pulley 8 and the worm wheel 11 and the worm 10 seated on the driven shaft 14 of the electric motor 22.
  • the brake disk 6 is therefore driven during the grinding process by means of the friction wheel 4, which abuts the peripheral edge of the brake disk 6 and transmits the driving force to the brake disk 6 by friction.
  • the friction wheel 4 can also engage directly on the hub of the brake disc 6.
  • the drive 23 is adjustably attached to the receiving frame 21.
  • the grinding wheel 16 is adjusted by displacing the receiving frame 21 with the aid of the adjusting screw 20.
  • the two guide tubes 17 and the four adjustable sliding sleeves 18 are used to fix the receiving frame 21 in any position.
  • the outer surface of the brake disc 6 is machined.
  • the drive 23 is moved to the opposite side of the receiving frame 21.
  • An electric motor drive is not absolutely necessary. It can be replaced by a pneumatic motor. Furthermore, in a departure from the exemplary embodiment, a prismatic guide can be installed in the grinding device instead of the guide tubes 17.
  • the two grinding wheels 16 are set with the aid of the adjusting spindles 26, 28.
  • a movable carriage 25 is arranged on the support bracket 27, which carries the inner drive 24.
  • its inner drive pulley can be omitted.
  • the brake discs can be run without wobbling errors with a significantly smaller tolerance than with conventional technology.
  • the worn brake disks do not need to be replaced as often, so that their service life is extended.
  • the grinding device according to the invention can be constructed and manufactured with less effort and in smaller dimensions than the conventional devices of the same purpose.
  • the grinding device according to the invention is not limited to its use in special workshops, but rather it can be set up in normal workshops, so that the reworking of the brake discs can be carried out routinely with the repair work on the entire brake system.
  • the handling of the grinding device according to the invention does not require any specially trained skilled workers. Their construction is very simple and their production can be carried out using conventional, simple technology.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Braking Arrangements (AREA)

Abstract

1. Grinding apparatus for regrinding the mounted brake disc of a motor vehicle disc brake, the working cylinder of which is secured to a retainer (5), comprising a support stand (19) which can be secured to the retainer (5) of the working cylinder instant of the cylinder itself and has two guides (17) for guiding a grinding, disc (16) is an adjustable manner by way of an adjusting screw (20), a reveiving frame (21, 27), a drive (friction wheel 4) that can be applied against the brake disc (6) or its hub to drive it, and a drive unit (23) including a drive motor (22) and two output shafts (9, 15), the grinding disc (16) being coupled with the first output shaft (15), the second output shaft having a reduction gear (10, 11) connected before it and being connected to the drive (friction wheel 4), characterized in that the receiving frame (21, 27) is adjustably guided at the two guides (17) by means of an adjusting screw (20) and the drive unit (23) is secured to the receiving frame (21, 27), the grinding disc (16) being seated on the first output shaft (15), the reduction gear of the drive unit being constructed as a worm drive (10, 11), and that the drive is constructed as a friction wheel (4) jounalled on the support stand (19) and coupled to the second output shaft (9) via a V-belt pulley drive (8, 1, 7).

Description

Gegenstand der Erfindung ist eine zum Nachschleifen der Bremsscheibe einer Kraftfahrzeug-Scheibenbremse gestaltete Schleifvorrichtung, die zum Nachschleifen der abgenutzten Bremsscheibe irgendwelchen Typs geeignet ist, ohne daß man die Radnabe und die Bremsscheibe zerlegen muß.The invention relates to a grinding device designed for regrinding the brake disc of a motor vehicle disc brake, which is suitable for regrinding the worn brake disc of any type without having to disassemble the wheel hub and the brake disc.

Eine Schleifvorrichtung entsprechend des einleitenden Teils des Anspruchs 1 ist aus der GB-A-2 085 773 bekannt. Eine derartige Schleifvorrichtung hat den Vorteil, daß die Bremsscheibe nachgeschliffen werden kann, ohne sie aus dem Kraftfahrzeug ausbauen zu müssen. Bei der bekannten Schleifvorrichtung jedoch sind die beiden Ausgangswellen des Antriebsmotors, der nicht an der Schleifvorrichtung selbst angeordnet ist, als flexible Wellen ausgebildet, wodurch die maximale Drehzahl der Schleifscheibe begrenzt ist. Die Drehzahluntersetzung des Untersetzungsgetriebes für das Drehen der Bremsscheibe beträgt zwei zu eins, so daß diese im Vergleich mit der Schleifscheibe verhältnismäßig schnell gedreht wird, wodurch die Bearbeitungsgenauigkeit beeinflußt wird. Nach einer anderen Auführungsform ist es aus der genannten Druckschrift auch bekannt, die Schleifscheibe mittels der Ausgangsweile einer elektrischen Handbohrmaschine anzutreiben und als Antrieb der Bremsscheibe ein an deren Umfang angreifendes Reibrad vorzusehen, welches mit der Schleifscheibenweile über ein Stirnradgetriebe gekuppelt ist. Diese Ausführungsform ist jedoch nur für einen "do-it- yourself"-Gebrauch bestimmt, und nicht zur Erzielung einer hohen Bearbeitungsgenauigkeit geeignet.A grinding device according to the introductory part of claim 1 is known from GB-A-2 085 773. Such a grinding device has the advantage that the brake disc can be reground without having to remove it from the motor vehicle. In the known grinding device, however, the two output shafts of the drive motor, which is not arranged on the grinding device itself, are designed as flexible shafts, as a result of which the maximum speed of the grinding wheel is limited. The speed reduction of the reduction gear for rotating the brake disc is two to one, so that it is rotated relatively quickly in comparison with the grinding wheel, which affects the machining accuracy. According to another embodiment, it is also known from the cited document to drive the grinding wheel by means of the starting point of an electric hand drill and to provide a friction wheel acting on the periphery of the brake wheel, which is coupled to the grinding wheel by means of a spur gear. However, this embodiment is only intended for "do-it-yourself" use and is not suitable for achieving high machining accuracy.

Durch die Erfindung wird die Aufgabe gelöst, eine Schleifvorrichtung für Bremsscheiben zu schaffen, mit welcher - entsprechend den modernen Anforderungen - die Reparatur einer abgenutzten Bremsscheibe wirtschaftlich in kurzer Zeit durch Schleifen genau auf Maß vorgenommen werden kann.The invention solves the problem of creating a grinding device for brake discs, with which - according to modern requirements - the repair of a worn brake disc can be carried out economically in a short time by grinding precisely to size.

Dies wird gemäß der Erfindung durch die Merkmale aus dem Anspruch 1 erreicht. Bevorzugte Ausgestaltungen der Erfindung sind in den Ansprüchen 2 bis 4 angegeben.This is achieved according to the invention by the features from claim 1. Preferred embodiments of the invention are specified in claims 2 to 4.

Durch die Erfindung ist daher eine Schleifvorrichtung geschaffen, durch welche das Nachschleifen der Bremsscheiben in deren Einbaulage durchführbar ist. Die Schleifvorrichtung wird am Halter des Arbeitszylinders der Scheibenbremsen befestigt. Außer der Durchführung des Oberflächenschliffs an beiden Seiten der Bremsscheibe wird diese während des Schleifens kontinuierlich gedreht.The invention therefore provides a grinding device by means of which the brake discs can be re-ground in their installed position. The grinding device is attached to the holder of the working cylinder of the disc brakes. In addition to performing the surface grinding on both sides of the brake disc, it is rotated continuously during grinding.

Die Erfindung wird anhand von bevorzugten Ausführungsformen erläutert, die aus der Zeichnung ersichtlich sind. In der Zeichnung zeigt:

  • Fig. 1 eine erfindungsgemäße Schleifvorrichtung im anmontierten Zustand schematisch in Seitenansicht,
  • Fig. 2 die Schleifvorrichtung aus Fig. 1 in der Draufsicht mit schematischer Darstellung des Abtriebs-Verzweigungsgetriebes des Antriebsmotors,
  • Fig. 3 die Draufsicht einer zweiten Ausführungsform und
  • Fig. 4 die Schleifvorrichtung aus Fig. 3 in anderer Ansicht.
The invention is explained on the basis of preferred embodiments which can be seen from the drawing. The drawing shows:
  • 1 is a schematic side view of a grinding device according to the invention in the assembled state,
  • 2 shows the grinding device from FIG. 1 in a top view with a schematic illustration of the output branching gear of the drive motor,
  • Fig. 3 is a plan view of a second embodiment and
  • Fig. 4 shows the grinding device of Fig. 3 in another view.

Aus Fig. 2 ist der Halter 5 des Arbeitszylinclers der Scheibenbremse ersichtlich. An diesem Halter 5 wird - nachdem der Arbeitszylinder abmontiert worden ist - die Schleifvorrichtung mittels eines Auflagebockes 19 befestigt. Zur Befestigung des Auflagebockes 19 sind an diesem mehrere Spezialbohrungen ausgebildet, damit die Schleifvorrichtung unabhängig von der aktuellen Lage des Halters 5 und dem aktuellen Bremsscheibendurchmesser universell verwendet werden kann. Am Auflagebock 19 sind weiter zwei beidseitig desselben senkrecht von dem Auflagebock 19 abstehende Führungsrohre 17 für je eine Gleithülse 18 befestigt, wobei die Gleithülsen 18 derart ausgebildet sind, daß sie an vier Anpaß-Stellen nachgestellt werden können. Mittels der Gleithülsen 18 ist an dem Auflagebock 19 ein diesen beidseitig umgreifender Aufnahmerahmen 21 befestigt, an dem der unten noch im einzelnen erläuterte Antrieb 23 vorzugsweise mittels Schrauben befestigt wird. Um den Aufnahmerahmen 21 senkrecht zum Auflagebock 19 hin- und herverstellen zu können, ist eine Stellschraube 20 vorgesehen, die durch eine Gewindebohrung am Auflagebock 19 hindurchragt und in dem Aufnahmerahmen 21 axial fest, jedoch verdrehbar gehalten ist.From Fig. 2, the holder 5 of the Arbeitszylinclers the disc brake can be seen. After the working cylinder has been removed, the grinding device is fastened to this holder 5 by means of a support block 19. Several special bores are formed on the support bracket 19 so that the grinding device can be used universally regardless of the current position of the holder 5 and the current brake disc diameter. On the support bracket 19, two guide tubes 17 projecting from the support bracket 19 on both sides thereof, each for a sliding sleeve 18, are fastened, the sliding sleeves 18 being designed in such a way that they can be adjusted at four adjustment points. By means of the sliding sleeves 18, a support frame 21 is attached to the support bracket 19, on which the drive frame 21, which is explained in detail below, is preferably attached by means of screws. In order to be able to move the receiving frame 21 back and forth perpendicular to the support bracket 19, an adjusting screw 20 is provided which projects through a threaded hole on the support bracket 19 and is held axially fixed but rotatable in the receiving frame 21.

Der an der einen Seite des Auflagebockes 19 an dem Aufnahmerahmen 21 befestigte Antrieb 23 kann einen Elektromotor oder einen pneumatischen Motor enthalten. Entsprechend eines bevorzugten Ausführungsbeispiels ist der Antrieb mit einem Elektromotor 22 versehen, an dessen Abtriebswelle 14 ein Getriebe angeschlossen ist, das aus Zahnrädern 12, 13 sowie einem Schneckengetriebe 10, 11 besteht. Das Getriebe des Antriebs 23 ist als Verzweigungsgetriebe ausgebildet, dessen eine Ausgangswelle 15, an welchem eine Schleifscheibe 16 sitzt, über die Kegelzahnräder 12,13 mit hoher Drehzahl angetrieben ist und dessen andere Ausgangswelle 9 über das Schneckengetriebe 10, 11 mit geringer Drehzahl angetrieben ist.The drive 23, which is fastened to the receiving frame 21 on one side of the support bracket 19, can contain an electric motor or a pneumatic motor. According to a preferred embodiment, the drive is provided with an electric motor 22, to the output shaft 14 of which a gear is connected, which consists of gear wheels 12, 13 and a worm gear 10, 11. The gear of the drive 23 is designed as a branching gear, one output shaft 15, on which a grinding wheel 16 is seated, is driven at high speed via the bevel gears 12, 13 and the other output shaft 9 is driven at low speed via the worm gear 10, 11.

Über die Ausgangswelle 9, eine daran sitzende Abtriebsriemenscheibe 8 und einen Keilriemen 1 ist die Antriebsriemenscheibe 7 eines Reibrades 4 angetrieben, welches mit seiner Welle 3 senkrecht zum Auflagebock 19 in diesem gelagert ist und am Umfangsrand der Schleifscheibe 6 anliegt, so daß diese mittels des Reibrades 4 während des Schleifvorganges kontinuierlich verdreht wird.Via the output shaft 9, a driven pulley 8 attached to it and a V-belt 1, the drive pulley 7 of a friction wheel 4 is driven, which is mounted with its shaft 3 perpendicularly to the support bracket 19 and rests on the peripheral edge of the grinding wheel 6, so that it is by means of the friction wheel 4 is continuously rotated during the grinding process.

Die Welle 15 der Schleifscheibe 16 verläuft senkrecht zu der zu bearbeitenden Oberfläche der Bremsscheibe 6. Erfindungsgemäß kann die Schleifvorrichtung auch mit zwei Schleifscheiben 16 versehen werden. Ein Ausführungsbeispiel hierzu ist aus den Fig. 3 und 4 ersichtlich. Nach diesem Ausführungsbeispiel ist ein Schlitten 25 am Aufnahmerahmen 27 bewegbar montiert und an dem Schlitten 25 ist der innere Antrieb 24 der zweiten Schleifscheibe 16 befestigt. Ebenso ist an dem Aufnahmerahmen 27 der aus dem ersten Ausführungsbeispiel bereits bekannte Antrieb 23 befestigt, so daß die beiden Antriebe 23, 24 mit ihren Schleifscheiben 16 die Bremsscheibe 6 beidseitig umfassen.The shaft 15 of the grinding wheel 16 runs perpendicular to the surface of the brake wheel 6 to be machined. According to the invention, the grinding device can also be provided with two grinding wheels 16. An embodiment of this is shown in FIGS. 3 and 4. According to this exemplary embodiment, a carriage 25 is movably mounted on the receiving frame 27 and the inner drive 24 of the second grinding wheel 16 is fastened to the carriage 25. Likewise, the drive 23 already known from the first exemplary embodiment is fastened to the receiving frame 27, so that the two drives 23, 24 with their grinding disks 16 encompass the brake disk 6 on both sides.

Zur Einstellung der beiden Schleifscheiben 16 gegeneinander und bezüglich des Auflagebockes 19 dienen die an das Führungsrohr bzw. die Führungsrohre 17 angeschlossene Stellspindel 28 bzw. die Stellspindel 26. Die weiteren Konstruktionsbestandteile entsprechen denjenigen der Ausführungsform aus Fig. 1.The adjusting spindle 28 or adjusting spindle 26 connected to the guide tube or the guide tubes 17 are used to adjust the two grinding wheels 16 against one another and with respect to the support bracket 19. The other structural components correspond to those of the embodiment from FIG. 1.

Die Schleifvorrichtungen nach beiden Ausführungsformen werden nach einem analogen Prinzip betrieben. Dieses Prinzip besteht darin, daß die Bremsscheibe 6 mit Hilfe einer Schleifscheibe 16 hoher Drehzahl im Einbauzustand der Bremsscheibe 6 bearbeitet wird. Die Schleifvorrichtung wird an der Stelle des vorher abmontierten Arbeitszylinders der Scheibenbremse befestigt:

  • Die Bremsscheibe 6 wird nicht von ihrer Nabe abmontiert.
The grinding devices according to both embodiments are operated on an analog principle. This principle consists in that the brake disc 6 is processed with the aid of a high-speed grinding wheel 16 in the installed state of the brake disc 6. The grinding device is attached to the place of the previously removed working cylinder of the disc brake:
  • The brake disc 6 is not removed from its hub.

Während des Betriebs der Schleifvorrichtung führt die primäre Bewegung die Schleifscheibe 16 durch. Die Bremsscheibe 6 wird über das an die Abtriebswelle 14 montierte Schneckengetriebe 10, 11, den Keilriemen 1 und das seitlich der Schleifscheibe 16 gegen die Umfangsfläche der Bremsscheibe 6 angedrückte Reibrad 4 angetrieben. Bei der Ausführungsform aus den Fig. 1 und 2 kann der Antrieb 23 mitsamt der Schleifscheibe 16, dem Schneckengetriebe 10, 11 und dessen Abtriebsriemenscheibe 8 auf die entgegengesetzte Seite des Aufnahmerahmens 21 umgesetzt werden. Damit das Reibrad 4 auch von dieser Seite her angetrieben werden kann, weist es auf seiner Antriebswelle 3 auf beiden Seiten des Auflagebockes 19 je eine Antriebsriemenscheibe 2, 7 auf, so daß es mittels des Riemens 1 wahlweise über die eine Antriebsriemenscheibe 7 oder die andere Antriebsriemenscheibe 2 und das Nebengetriebe des Antriebs 23 angetrieben werden kann, welches aus der Welle 9 mit der Abtriebsriemenscheibe 8 und aus dem Schneckenrad 11 und der auf der Abtriebswelle 14 des Elektromotors 22 sitzenden Schnecke 10 besteht.During operation of the grinder, the primary movement performs the grinding wheel 16. The brake disc 6 is driven via the worm gear 10, 11 mounted on the output shaft 14, the V-belt 1 and the friction wheel 4 pressed against the circumferential surface of the brake disc 6 at the side of the grinding disc 16. In the embodiment from FIGS. 1 and 2, the drive 23 together with the grinding wheel 16, the worm gear 10, 11 and its driven pulley 8 can be implemented on the opposite side of the receiving frame 21. So that the friction wheel 4 can also be driven from this side, it has a drive pulley 2, 7 on its drive shaft 3 on both sides of the support bracket 19, so that it can be driven by means of the belt 1 either via a drive pulley 7 or the other drive pulley 2 and the auxiliary gear of the drive 23 can be driven, which consists of the shaft 9 with the driven pulley 8 and the worm wheel 11 and the worm 10 seated on the driven shaft 14 of the electric motor 22.

Der Antrieb der Bremsscheibe 6 während des Schleifvorganges erfolgt daher mittels des Reibrades 4, das an dem Umfangsrand der Bremsscheibe 6 anliegt und die Antriebskraft durch Reibung auf die Bremsscheibe 6 überträgt. In einer anderen, in der Zeichnung nicht dargestellten Ausführungsform kann das Reibrad 4 auch unmittelbar an der Nabe der Bremsscheibe 6 angreifen.The brake disk 6 is therefore driven during the grinding process by means of the friction wheel 4, which abuts the peripheral edge of the brake disk 6 and transmits the driving force to the brake disk 6 by friction. In another embodiment, not shown in the drawing, the friction wheel 4 can also engage directly on the hub of the brake disc 6.

Da die Bremsscheiben 6 in unterschiedlichen Typen hergestellt sind, können sie unterschiedliche Breiten und Durchmesser aufweisen. Dementsprechend ist der Antrieb 23 gegenüber dem Aufnahmerahmen 21 einstellbar an diesem befestigt. Die Zustellung der Schleifscheibe 16 erfolgt durch eine Verschiebung des Aufnahmerahmens 21 mit Hilfe der Stellschraube 20. Zur Festlegung des Aufnahmerahmens 21 in jeder Lage dienen die beiden Führungsrohre 17 und die vier nachstellbaren Gleithülsen 18.Since the brake discs 6 are manufactured in different types, they can have different widths and diameters. Accordingly, the drive 23 is adjustably attached to the receiving frame 21. The grinding wheel 16 is adjusted by displacing the receiving frame 21 with the aid of the adjusting screw 20. The two guide tubes 17 and the four adjustable sliding sleeves 18 are used to fix the receiving frame 21 in any position.

In der Anordnung der Schleifvorrichtung nach Fig. 2 wird die äußere Fläche der Bremsscheibe 6 bearbeitet. Zur Bearbeitung der inneren Oberfläche der Bremsscheibe 6 wird der Antrieb 23 an die gegenüberliegende Seite des Aufnahmerahmens 21 umgesetzt.2, the outer surface of the brake disc 6 is machined. To process the inner surface of the brake disc 6, the drive 23 is moved to the opposite side of the receiving frame 21.

Ein elektromotorischer Antrieb ist nicht unbedingt erforderlich. Er kann durch einen pneumatischen Motor ersetzt werden. Ferner kann abweichend von dem Ausführungsbeispiel anstelle der Führungsrohre 17 eine prismatische Führung in die Schleifvorrichtung eingebaut sein.An electric motor drive is not absolutely necessary. It can be replaced by a pneumatic motor. Furthermore, in a departure from the exemplary embodiment, a prismatic guide can be installed in the grinding device instead of the guide tubes 17.

Verwendet man zwei Antriebe 23, 24 nach der Ausführungsform aus Fig. 4, so werden die beiden Schleifscheiben 16 mit Hilfe der Stellspindeln 26, 28 eingestellt. In diesem Fall ist an dem Auflagebock 27 ein bewegbarer Schlitten 25 angeordnet, der den inneren Antrieb 24 trägt. Außerdem kann bei dieser Ausführungsform, bei welcher nur der Antrieb 23 mit dem Schneckengetriebe zum Antreiben des Reibrades 4 ausgestattet ist, dessen innere Antriebsriemenscheibe entfallen.If two drives 23, 24 according to the embodiment from FIG. 4 are used, the two grinding wheels 16 are set with the aid of the adjusting spindles 26, 28. In this case, a movable carriage 25 is arranged on the support bracket 27, which carries the inner drive 24. In addition, in this embodiment, in which only the drive 23 is equipped with the worm gear for driving the friction wheel 4, its inner drive pulley can be omitted.

Die Vorteile der erfindungsgemäßen Schleifvorrichtung können wie folgt zusammengefaßt werden:

  • Die erfindungsgemäße Schleifvorrichtung kann für Kraftfahrzeuge irgendwelchen Typs verwendet werden. Mit Hilfe der erfindungsgemäßen Schleifvorrichtung kann die Bremsscheibe mit höchster Genauigkeit - ohne Zerlegung der Radnabe und der Scheibenbremse - bearbeitet werden. Die Koaxialität der Radnabe und der Bremsscheibe wird ohne Bruch gesichert, was durch die bisherige Technologie nicht erreicht werden kann.
The advantages of the grinding device according to the invention can be summarized as follows:
  • The grinding device according to the invention can be used for motor vehicles of any type. With the help of the grinding device according to the invention, the brake disc can be machined with the greatest accuracy - without disassembling the wheel hub and the disc brake. The coaxiality of the wheel hub and the brake disc is ensured without breakage, which cannot be achieved with previous technology.

Der Lauf der Bremsscheiben ist ohne Taumelfehler mit bedeutend kleinerer Toleranz durchführbar als mit der herkömmlichen Technologie.The brake discs can be run without wobbling errors with a significantly smaller tolerance than with conventional technology.

Verwendet man die Vorrichtung gemäß vorliegender Erfindung, so brauchen die abgenutzten Bremsscheiben nicht so häufig ausgetauscht werden, so daß ihre Lebensdauer verlängert ist.If the device according to the present invention is used, the worn brake disks do not need to be replaced as often, so that their service life is extended.

Die erfindungsgemäße Schleifvorrichtung kann mit geringerem Aufwand und in kleineren Abmessungen konstruiert und hergestellt werden als die herkömmlichen Einrichtungen gleicher Bestimmung. Die erfindungsgemäße Schleifvorrichtung ist nicht auf ihre Anwendung in Spezialwerkstätten beschränkt, sondern sie kann in üblichen Werkstätten aufgestellt werden, so daß die Nachbearbeitung der Bremsscheiben routinemäßig mit der Reparaturarbeit an der ganzen Bremsanlage vorgenommen werden kann.The grinding device according to the invention can be constructed and manufactured with less effort and in smaller dimensions than the conventional devices of the same purpose. The grinding device according to the invention is not limited to its use in special workshops, but rather it can be set up in normal workshops, so that the reworking of the brake discs can be carried out routinely with the repair work on the entire brake system.

Die Handhabung der erfindungsgemäßen Schleifvorrichtung erfordert keine speziell ausgebildete Facharbeiter. Ihr Aufbau ist sehr einfach und ihre Herstellung ist im Rahmen herkömmlicher, einfacher Technologie durchführbar.The handling of the grinding device according to the invention does not require any specially trained skilled workers. Their construction is very simple and their production can be carried out using conventional, simple technology.

Claims (4)

1. Grinding apparatus for regrinding the mounted brake disc of a motor vehicle disc brake, the working cylinder of which is secured to a retainer (5), comprising a support stand (19) which can be secured to the retainer (5) of the working cylinder instead of the cylinder itself and has two guides (17) for guiding a grinding disc (16) in an adjustable manner by way of an adjusting screw (20), a receiving frame (21, 27), a drive (friction wheel 4) that can be applied against the brake disc (6) or its hub to drive it, and a drive unit (23) including a drive motor (22) and two output shafts (9,15), the grinding disc (16) being coupled with the first output shaft (15), the second output shaft having a reduction gear (10, 11) connected before it and being connected to the drive (friction wheel 4), characterised in that the receiving frame (21, 27) is adjustably guided at the two guides (17) by means of an adjusting screw (20) and the drive unit (23) is secured to the receiving frame (21, 27), the grinding disc (16) being seated on the first output shaft (15), the reduction gear of the drive unit being constructed as a worm drive (10, 11), and that the drive is constructed as a friction wheel (4) journalled on the support stand (19) and coupled to the second output shaft (9) via a V-belt pulley drive (8,1, 7).
2. Grinding apparatus according to claim 1, characterised in that the drive unit (23) is secured on the receiving frame (21) so as to be adjustable for varying widths and diameters of the brake disc (6).
3. Grinding apparatus according to claim 1 or 2, characterised in that the drive unit (23) together with the output pulley disc (8) seated on the second output shaft (9) can be relocated to the opposite side of the receiving frame (21), and that on the side of the friction wheel (4) opposite to the driving pulley disc (7) a second input pulley disc (2) is arranged, which can be coupled via the V-belt pulley (1) with the output pulley disc (8) of the relocated drive unit (23).
4. Grinding apparatus according to claim 1 or 1 in which a second grinding disc is arranged on the side of the support stand (19) opposite to the grinding disc (16) and the grinding discs are adjustable by means of adjusting spindles (26, 28), characterised in that a slide (25) is adjustably mounted on the receiving frame (27), a separate drive coupled with the second grinding disc being secured on the slide.
EP83104750A 1982-05-21 1983-05-13 Device for regrinding mounted automotive brake discs Expired EP0095110B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83104750T ATE21847T1 (en) 1982-05-21 1983-05-13 GRINDING DEVICE FOR REGRINDING THE MOUNTED BRAKE DISC OF A MOTOR VEHICLE DISC BRAKE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU821625A HU186601B (en) 1982-05-21 1982-05-21 Equipment regulating brake disc
HU162582 1982-05-21

Publications (2)

Publication Number Publication Date
EP0095110A1 EP0095110A1 (en) 1983-11-30
EP0095110B1 true EP0095110B1 (en) 1986-09-03

Family

ID=10955382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104750A Expired EP0095110B1 (en) 1982-05-21 1983-05-13 Device for regrinding mounted automotive brake discs

Country Status (4)

Country Link
EP (1) EP0095110B1 (en)
AT (1) ATE21847T1 (en)
DE (2) DE8314290U1 (en)
HU (1) HU186601B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1186873B (en) * 1985-05-14 1987-12-16 Galeazzo Maccaferri MACHINE FOR THE GRINDING OF BRAKE DISCS OF CARS AND VEHICLES IN GENERAL
CN106112718A (en) * 2016-07-01 2016-11-16 芜湖中驰机床制造有限公司 A kind of high precision face grinder
CN112223086B (en) * 2020-10-20 2022-04-08 嘉美瑞智能家居科技东台有限公司 Turnover type linkage control mechanism for plate polishing machine
CN113043149B (en) * 2021-04-19 2022-03-08 浙江机电职业技术学院 Automatic plate polishing device and using method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES334507A1 (en) * 1966-05-21 1968-03-16 Teves Kg Alfred Disk-brake cleaning method
DE1577289A1 (en) * 1966-10-05 1970-04-09 Ammco Tools Inc Grinding device for a lathe for machining vehicle brakes
SE415639B (en) * 1976-10-04 1980-10-20 Bengt Uno Gunnar Ekman PORTABLE ANSWERING DEVICE
GB2085773B (en) * 1980-10-23 1984-01-18 Yeatman Reed Richard Brake disc machining apparatus

Also Published As

Publication number Publication date
EP0095110A1 (en) 1983-11-30
HU186601B (en) 1985-08-28
DE3365823D1 (en) 1986-10-09
ATE21847T1 (en) 1986-09-15
DE8314290U1 (en) 1987-12-17

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