EP0416167B1 - Apparatus for spiral sharpening - Google Patents

Apparatus for spiral sharpening Download PDF

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Publication number
EP0416167B1
EP0416167B1 EP19890116677 EP89116677A EP0416167B1 EP 0416167 B1 EP0416167 B1 EP 0416167B1 EP 19890116677 EP19890116677 EP 19890116677 EP 89116677 A EP89116677 A EP 89116677A EP 0416167 B1 EP0416167 B1 EP 0416167B1
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EP
European Patent Office
Prior art keywords
guide bar
spiral
sharpening apparatus
support
spindle
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 - Lifetime
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EP19890116677
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German (de)
French (fr)
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EP0416167A1 (en
Inventor
Gerhard Sailer
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.)
Michael Deckel Feinmechanik & Co KG GmbH
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Michael Deckel Feinmechanik & Co KG GmbH
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Application filed by Michael Deckel Feinmechanik & Co KG GmbH filed Critical Michael Deckel Feinmechanik & Co KG GmbH
Priority to DE89116677T priority Critical patent/DE58906322D1/en
Priority to EP19890116677 priority patent/EP0416167B1/en
Publication of EP0416167A1 publication Critical patent/EP0416167A1/en
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Publication of EP0416167B1 publication Critical patent/EP0416167B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/02Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters
    • B24B3/08Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters of profile milling cutters, e.g. of disc type
    • B24B3/085Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters of profile milling cutters, e.g. of disc type using a template
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B17/00Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor
    • B24B17/02Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor involving mechanical transmission means only

Definitions

  • the invention relates to a swirl grinding device of the type mentioned in the preamble of claim 1.
  • a swirl grinding device of the type mentioned in the preamble of claim 1 is already known, in which the guide ruler is arranged on an additionally provided correction slide which is adjusted via a copying ruler so that the guide ruler of the swirl grinding device is additionally pivoted during the axial movement of the tool spindle (chute -Blvestter, May 1975, No. 68 from Alfred H. Scblingrusgesellschaft mbH, Cologne).
  • the correction slide is adjusted hydraulically by means of appropriate actuators which are controlled by control sensors.
  • the known device is structurally very complex and therefore expensive.
  • the guide ruler is curved so that its "setting angle” changes continuously along its length so that the required dependence of the angle of rotation on the axial feed movement of the tool spindle is achieved.
  • the guide ruler can therefore be fixed as in conventional machines, so that a complex device for adjusting the angle of the guide ruler is unnecessary.
  • the curvature of the guide ruler can be specified, for example, by the manufacturer of the tool, who has also used this dependence of the angle of rotation on the axial feed movement of the tool spindle in the manufacture of the tool.
  • the curvature can also be determined in a simple manner by the user of the tool, in that the contour of the tool is scanned in the swirl grinding device by means of the grinding wheel or by means of a separate sensor and the path of the following link is recorded, which immediately yields the curved guideline contour.
  • the curvature of the guide ruler can be arbitrary and, for example, non-uniform over the length of the guide ruler. Any dependencies of the angle of rotation on the axial feed movement of the tool spindle can thus be represented, such as they can occur, for example, with spherical cylindrical or conical tools.
  • the curvature of the guide rule can be changed.
  • a ruler can thus be adapted to different tools, so that separate devices do not have to be kept in stock for them, as is the case with the known twist grinding device mentioned above.
  • the guide ruler is designed as an elastic band which can be clamped in a predetermined position and shape by suitable means.
  • suitable means include, for example, two support bearings for supporting the end regions of the band and at least one adjustable deflection device arranged between these support bearings.
  • the curvature of the guide ruler then results with a guide ruler of certain dimensions depending on the distance between the support bearings and the deflection path. In order to be able to influence the shape of the curvature in a simple manner, the distance between the support bearings is variable.
  • the support bearings are designed as supports on which the guide ruler is placed. In order to be able to reverse the direction of curvature, the support bearings can be changed for different support directions.
  • the support bearings are each arranged two in the plane of curvature of the band with a distance corresponding to the thickness of this band
  • Supports include; the tape is inserted between these two supports and is thus supported in two opposite support directions. The tape is not clamped by the respective supports, so that it behaves mechanically like a beam resting on two bearings.
  • the support bearings are each designed as a rotary block provided with a receiving slot for receiving the band, which are pivotable about a pivot axis perpendicular to the plane of curvature of the band; in this way, these support bearings can also freely adjust in accordance with the curvature of the band in their end region.
  • the deflection devices are designed as set screws. These are preferably each guided in threaded bushings pivotably mounted about pivot axes perpendicular to the plane of curvature. In this way, the set screws can adapt to lateral displacements of their articulation point on the belt without tension. This is particularly important when adjusting screws are provided outside the belt center, as will be explained with the aid of an exemplary embodiment.
  • the set screws are connected to the band according to a preferred embodiment of the invention, each via tension and compression forces on the band transmitting, at least in the plane of curvature of the band connected to the respective set connecting shoes.
  • the following link is designed as a pair of rollers with two guide rollers arranged at a distance from one another corresponding to the strip thickness, the strip between the receiving rollers. So that the pair of rollers can adjust itself according to the curve of the belt, it is pivoted about an axis perpendicular to the plane of curvature of the belt.
  • the distance between the guide rollers is preferably adjustable so that the follower can be adapted to belts of different thicknesses.
  • the swirl grinding device 2 shown in FIG. 1 is part of a conventional tool grinding machine, from which the grinding wheel 4 coupled to a grinding drive can also be seen.
  • the twist grinding device 2 comprises a tool spindle 6, which is rotatably mounted about the spindle axis 8 in a spindle block 10, which in turn in the direction of arrow 38, i.e. is displaceable in the direction of the spindle axis 8.
  • the rotary drive device 12 comprises a bevel gear 14 connected to the tool spindle, a bevel gear 16 meshing with it, a toothed pinion 18 connected to the bevel gear 16, and a toothed rack 20 which is in engagement with the pinion 18 and which is vertically displaceable in the vertical column 22 of the spindle bracket 10 is stored.
  • a pair of rollers 24, 26 is arranged on the rack 20, the function of which is explained in more detail below.
  • a ruler support 30 is fastened in an adjustable manner parallel to the direction of the arrow 38 on a holding bracket 28 which is fixed with respect to the displaceable spindle bracket 10 and which comprises a mounting disc 32 which can be pivoted about a pivot axis 34 crossing the spindle axis 8 and can be locked in any swivel position.
  • a curved guide ruler 36 is fastened to the end face of the mounting plate 32 facing the column 22.
  • the rollers 24, 26 forming the follow-up device are arranged such that they can roll on the underside or the top of the guide ruler 36.
  • the guide ruler 36 is a flexible elastic band which is essentially perpendicular to the mounting plate 32 with one side edge and is held in its shape and position by suitable means described in more detail below.
  • the function of the device is as follows: When the spindle bracket 10 is moved in the direction of the arrow 38, ie in the direction of the spindle axis 8, the rollers 24, 26 roll on the guide ruler 36. If, as shown in FIG. 1, the mounting plate 32 is set at an angle to the direction of displacement 38, when the headstock 10 is displaced in the direction of the arrow 38, the rollers 24, 26 are vertically adjusted by the guide ruler 36 and take the rack 20 with them. The vertical movement of the rack 20 is transmitted to the pinion 18 and thus to the ring gears 16, 14, so that the tool spindle 6 is rotated.
  • the angle setting of the mounting plate 32 corresponds approximately to an average pitch of the tool cutting edges, which is given approximately in the middle of the axial length of the tool.
  • the for Achieving the constant swirl angle required slope change towards the front or rear tool end is taken into account by the variable slope of the guide ruler 36 due to the curvature of this ruler.
  • the means by which the guide ruler 36 is held in its position and shape essentially consist of a bolt 42 which can be screwed onto the mounting plate 32 and at whose ends support bearings are arranged for supporting the end regions of the guide ruler , and in the area between the support bearings at least one adjusting screw is provided which deflects the guide ruler 36 in the desired direction.
  • FIGS. 2 and 3 show in an enlarged view a bolt 44 corresponding approximately to the bolt 42 from FIG. 1, which can be screwed onto the mounting plate 32 by means of fastening screws 47 (see FIG. 3) which can be pushed through the fastening bores 46.
  • support bearings 48, 50 are arranged, which are adjustable in their distance, as indicated by the arrows 52.
  • the support bearings 48, 50 in FIG. 2 are designed as pure supports on which the guide ruler 36 lies loosely.
  • the bolt 44 is provided with elongated holes 54 (see plan view in FIG. 3), through which the fastening screws 56 extend, which are screwed into corresponding threaded holes in the support bearings 48 and 50, respectively.
  • a first set screw 58 is provided, which by a Threaded bore 60 engages in the bolt 44 and is connected to the guide rule 36 via a connecting shoe 62; this connecting shoe is designed so that it allows the adjusting screw 58 to be rotated and that it can transmit tensile and compressive forces to the guide ruler 36.
  • a desired curvature of the guide ruler 36 is set by adjusting the set screw 58.
  • FIG. 2 also indicates, another bolt 64 can be fastened on the mounting plate 32 opposite the bolt 44, of which only the left end is shown in FIG.
  • This bolt 64 carries support bearings 66, on which the guide ruler 36 rests when it is to be curved downward, as indicated by broken lines.
  • the support bearing shown like all other support bearings, can be moved laterally and turned over to the position shown in broken lines in order to vary the support distance for the guide ruler 36.
  • this allows a lateral offset of the articulation points of the adjusting screws 68, 70 to be compensated for by the curvature of the guide rail, on the other hand there is the possibility of having the adjusting screws act on articulation points that are more or less far from the articulation point of the central adjusting screw 58.
  • the set screws 68, 70 are connected via joints 83, 85 to connecting shoes 84, 86 which are fastened to the guide ruler 36. These joints 83, 85 allow different inclinations of the adjusting screws 68, 70 to the guide ruler 36.
  • FIGS. 4 and 5 show another exemplary embodiment of a support bearing 88. It essentially consists of a circular-cylindrical rotary block which is mounted on the mounting plate 32 so as to be pivotable about a pivot axis 90 parallel to the cylinder axis. An axis body 92 coaxial with the pivot axis 90 passes through the support bearing 88 and is held by a retaining screw 94 screwed into the mounting plate 32 from the rear side thereof. The retaining screw 94 passes through an elongated hole 96 formed in the mounting plate 32, so that the support bearing 88 is displaceable and thus the distance between two support bearings arranged in the two end regions of the mounting plate 32 is variable.
  • the support bearing 88 has a receiving slot 98 in which the guide ruler 36 can be inserted.
  • the inserted guide rule 36 can be clamped by a clamping screw 100. Since the support bearing 88 is rotatable about the pivot axis 90, the receiving slot 98 and thus the guide ruler 36 held therein can adapt to the respective course of this guide ruler in its end region, such as in Figure 4 is indicated by dashed lines.
  • the support bearing 88 therefore, like the support bearings described above, does not act as a clamp for the guide ruler 36, but technically as a support.
  • the follower connected to the rack 20 is designed as a double roller, one roller 24 of which rolls on the underside of the guide rail and the other roller of which rolls on the top of the guide rail 36.
  • the clamping plate 102 shown in FIGS. 6 and 7 is provided.
  • the clamping plate 102 is provided with a circular clamping opening 104 passing through it, which can be pushed onto one of the mentioned guide rollers.
  • a clamping screw 106 enables clamping of the clamping plate 102 on this guide roller.
  • a receiving bore 108 serves to receive a roller shaft 110, on which a roller can be mounted in a known and therefore not shown manner, which roller is secured by means of a locking ring.
  • the clamping plate 102 is provided with an adjustment slot 112, which allows an adjustment of the center distance of the roller mounted on the roller axle 110 to the two guide rollers mentioned above and thus an adaptation to different guide rule thicknesses.
  • a clamping screw 114 which bridges the clamping slot 112, is used to adjust the width of the adjusting slot 112.
  • the clamping plate 102 can be pivoted about the axis of this guide roller, so that the pair of rollers rolling on the guide ruler 36 can adapt to the respective course of the ruler.

Description

Die Erfindung betrifft eine Drallschleifeinrichtung der im Oberbegriff des Anspruches 1 genannten Art.The invention relates to a swirl grinding device of the type mentioned in the preamble of claim 1.

Bei der zerspanenden Bearbeitung metallischer Werkstücke werden mehr und mehr Schneidwerkzeuge mit über die Werkzeuglänge sich änderndem Durchmesser, insbesondere kegelige Werkzeuge, und mit konstantem Drallwinkel verwendet, da diese zerspanungstechnisch günstiger sind als herkömmliche Werkzeuge mit konstanter Steigung und veränderlichem Drallwinkel. Ein besonderes Problem ergibt sich beim Schleifen derartiger Werkzeuge, da bei der Abwälzbewegung des Werkeuges gegenüber der Schleifscheibe der Drehwinkel der Werkzeugspindel nicht mehr in einem linearen Zusammenhang zur axialen Verschiebebewegung stehen kann.When machining metallic workpieces, more and more cutting tools with a diameter that changes over the tool length, in particular tapered tools, and with a constant helix angle are used, since these are more favorable in terms of machining technology than conventional tools with constant pitch and variable helix angle. A particular problem arises when grinding tools of this type, since during the rolling movement of the tool relative to the grinding wheel, the angle of rotation of the tool spindle can no longer be linearly related to the axial displacement movement.

Es ist bereits eine Drallschleifeinrichtung der im Oberbegriff des Anspruches 1 genannten Art bekannt, bei der das Leitlineal auf einem zusätzlich vorgesehenen Korrekturschlitten angeordnet ist, welcher über ein Kopierlineal so verstellt wird, daß das Leitlineal der Drallschleifeinrichtung bei der Axialbewegung der Werkzeugspindel zusätzlich verschwenkt wird (Schütte-Blätter, Mai 1975, Nr. 68 der Firma Alfred H. Schütte Vertriebsgesellschaft mbH, Köln). Die Verstellung des Korrekturschlittens erfolgt hydraulisch über entsprechende Stellantriebe, die durch Steuerfühler angesteuert werden. Die bekannte Einrichtung ist baulich sehr aufwendig und damit teuer.A swirl grinding device of the type mentioned in the preamble of claim 1 is already known, in which the guide ruler is arranged on an additionally provided correction slide which is adjusted via a copying ruler so that the guide ruler of the swirl grinding device is additionally pivoted during the axial movement of the tool spindle (chute -Blätter, May 1975, No. 68 from Alfred H. Schütte Vertriebsgesellschaft mbH, Cologne). The correction slide is adjusted hydraulically by means of appropriate actuators which are controlled by control sensors. The known device is structurally very complex and therefore expensive.

Es ist die Aufgabe der vorliegenden Erfindung, eine Drallschleifeinrichtung der im Oberbegriff des Anspruches 1 genannten Art zu schaffen, die einfach im Aufbau und damit preiswert ist und die eine einfache Handhabung erlaubt.It is the object of the present invention to provide a swirl grinding device of the type mentioned in the preamble of claim 1, which is simple in construction and therefore inexpensive and which allows easy handling.

Diese Aufgabe ist erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst.This object is achieved by the features of claim 1.

Das Leitlineal ist so gekrümmt, daß sich sein "Einstellwinkel" entlang seiner Länge kontinuierlich so ändert, daß die geforderte Abhängigkeit des Drehwinkels von der axialen Vorschubbewegung der Werkzeugspindel erreicht wird. Das Leitlineal kann deshalb wie bei herkömmlichen Maschinen fest angeordnet sein, so daß eine aufwendige Einrichtung zur Winkelverstellung des Leitlineals entbehrlich ist. Die Krümmung des Leitlineals kann beispielsweise vom Hersteller des Werkzeuges vorgegeben sein, der ja diese Abhängigkeit des Drehwinkels von der axialen Vorschubbewegung der Werkzeugspindel bei der Herstellung des Werkzeuges ebenfalls verwendet hat. Die Krümmung kann jedoch auch in einfacher Weise vom Benutzer des Werkzeuges ermittelt werden, indem in der Drallschleifeinrichtung die Kontur des Werkzeuges mittels der Schleifscheibe oder mittels eines gesonderten Fühlers abgetastet und der Weg des Folgegliedes aufgezeichnet wird, welcher unmittelbar die gekrümmte Leitlinealkontur ergibt.The guide ruler is curved so that its "setting angle" changes continuously along its length so that the required dependence of the angle of rotation on the axial feed movement of the tool spindle is achieved. The guide ruler can therefore be fixed as in conventional machines, so that a complex device for adjusting the angle of the guide ruler is unnecessary. The curvature of the guide ruler can be specified, for example, by the manufacturer of the tool, who has also used this dependence of the angle of rotation on the axial feed movement of the tool spindle in the manufacture of the tool. However, the curvature can also be determined in a simple manner by the user of the tool, in that the contour of the tool is scanned in the swirl grinding device by means of the grinding wheel or by means of a separate sensor and the path of the following link is recorded, which immediately yields the curved guideline contour.

Die Krümmung des Leitlineals kann beliebig und beispielsweise über die Länge des Leitlineals ungleichförmig sein. Damit lassen sich beliebige Abhängigkeiten des Drehwinkels von der axialen Vorschubbewegung der Werkzeugspindel darstellen, wie sie beispielsweise bei balligen zylindrischen oder kegeligen Werkzeugen vorkommen können.The curvature of the guide ruler can be arbitrary and, for example, non-uniform over the length of the guide ruler. Any dependencies of the angle of rotation on the axial feed movement of the tool spindle can thus be represented, such as they can occur, for example, with spherical cylindrical or conical tools.

Gemäß einer weiteren Ausgestaltung der Erfindung ist vorgesehen, daß die Krümmung des Leitlineals veränderbar ist. Damit kann ein Leitlineal an unterschiedliche Werkzeuge angepaßt werden, so daß für diese nicht jeweils gesonderte Einrichtungen vorrätig gehalten werden müssen, wie das bei der oben genannten bekannten Drallschleifeinrichtung der Fall ist.According to a further embodiment of the invention, it is provided that the curvature of the guide rule can be changed. A ruler can thus be adapted to different tools, so that separate devices do not have to be kept in stock for them, as is the case with the known twist grinding device mentioned above.

In weiterer Ausgestaltung der Erfindung ist das Leitlineal als elastisches Band ausgebildet, das durch geeignete Mittel in einer vorgegebenen Lage und Form eingespannt werden kann. Diese Mittel umfassen beispielsweise zwei Stützlager zum Stützen der Endbereiche des Bandes sowie wenigstens eine zwischen diesen Stützlagern angeordnete verstellbare Auslenkeinrichtung. Die Krümmung des Leitlineals ergibt sich dann bei einem Leitlineal bestimmter Abmessungen in Abhängigkeit vom Abstand der Stützlager und vom Auslenkweg. Um die Krümmungsform in einfacher Weise beeinflussen zu können, sind die Stützlager in ihrem gegenseitigen Abstand veränderlich.In a further embodiment of the invention, the guide ruler is designed as an elastic band which can be clamped in a predetermined position and shape by suitable means. These means include, for example, two support bearings for supporting the end regions of the band and at least one adjustable deflection device arranged between these support bearings. The curvature of the guide ruler then results with a guide ruler of certain dimensions depending on the distance between the support bearings and the deflection path. In order to be able to influence the shape of the curvature in a simple manner, the distance between the support bearings is variable.

In einer besonders einfachen Ausgestaltung der Erfindung sind die Stützlager als Auflager ausgebildet, auf die das Leitlineal aufgelegt wird. Um die Krümmungsrichtung umkehren zu können, sind die Stützlager für unterschiedliche Stützrichtungen umstellbar.In a particularly simple embodiment of the invention, the support bearings are designed as supports on which the guide ruler is placed. In order to be able to reverse the direction of curvature, the support bearings can be changed for different support directions.

In einer anderen Ausgestaltung der Erfindung ist vorgesehen, daß die Stützlager jeweils zwei in der Krümmungsebene des Bandes mit einem der Dicke dieses Bandes entsprechenden Abstands zueinander angeordnete Auflager umfassen; das Band wird zwischen diese beiden Auflager eingeführt und ist damit in zwei entgegengesetzten Stützrichtungen abgestützt. Das Band wird durch die jeweiligen Auflager nicht eingespannt, so daß es sich mechanisch wie ein auf zwei Lagern aufliegender Balken verhält.In another embodiment of the invention it is provided that the support bearings are each arranged two in the plane of curvature of the band with a distance corresponding to the thickness of this band Supports include; the tape is inserted between these two supports and is thus supported in two opposite support directions. The tape is not clamped by the respective supports, so that it behaves mechanically like a beam resting on two bearings.

In einer anderen Ausgestaltung der Erfindung sind die Stützlager jeweils als mit einem Aufnahmeschlitz zur Aufnahme des Bandes versehene Drehkloben ausgebildet, die um eine senkrecht zur Krümmungsebene des Bandes stehende Schwenkachse schwenkbar sind; auf diese Weise können sich auch diese Stützlager entsprechend dem Krümmungsverlauf des Bandes in deren Endbereich frei einstellen.In another embodiment of the invention, the support bearings are each designed as a rotary block provided with a receiving slot for receiving the band, which are pivotable about a pivot axis perpendicular to the plane of curvature of the band; in this way, these support bearings can also freely adjust in accordance with the curvature of the band in their end region.

Die Auslenkeinrichtungen sind gemäß einer besonders einfachen Ausgestaltung der Erfindung als Stellschrauben ausgebildet. Diese sind vorzugsweise jeweils in um senkrecht zur Krümmungsebene stehende Schwenkachsen schwenkbar gelagerten Gewindebuchsen geführt. Auf diese Weise können sich die Stellschrauben an seitliche Verschiebungen ihres Anlenkpunktes am Band ohne Verspannung anpassen. Das ist insbesondere dann von Bedeutung, wenn außerhalb der Bandmitte angeordnete Stellschrauben vorgesehen sind, wie anhand eines Ausführungsbeispieles erläutert wird.According to a particularly simple embodiment of the invention, the deflection devices are designed as set screws. These are preferably each guided in threaded bushings pivotably mounted about pivot axes perpendicular to the plane of curvature. In this way, the set screws can adapt to lateral displacements of their articulation point on the belt without tension. This is particularly important when adjusting screws are provided outside the belt center, as will be explained with the aid of an exemplary embodiment.

Die Stellschrauben sind mit dem Band gemäß einer bevorzugten Ausgestaltung der Erfindung jeweils über Zug- und Druckkräfte auf das Band übertragende, zumindest in der Krümmungsebene des Bandes schwenkbar mit der jeweiligen Stellschraube verbundene Verbindungsschuhe verbunden. Auf diese Weise kann die Auslenkung des Bandes und damit der Krümmungsverlauf zwischen den Stützlagern sehr genau vorgegeben werden, wobei gilt, daß ein gewünschter Krümmungsverlauf umso genauer eingestellt werden kann, je mehr Stellschrauben vorgesehen sind.The set screws are connected to the band according to a preferred embodiment of the invention, each via tension and compression forces on the band transmitting, at least in the plane of curvature of the band connected to the respective set connecting shoes. In this way, the deflection of the band and thus the course of curvature between the support bearings be specified very precisely, with the fact that the more adjusting screws are provided, the more precisely a desired curvature can be set.

Das Folgeglied ist als Rollenpaar mit zwei in einem der Banddicke entsprechenden Abstand zueinander angeordneten, das Band zwischen sich aufnehmenden Führungsrollen ausgebildet. Damit das Rollenpaar sich dem Kurvenverlauf des Bandes entsprechend einstellen kann, ist es um eine senkrecht zur Krümmungsebene des Bandes stehende Achse schwenkbar gelagert. Der Abstand der Führungsrollen ist vorzugsweise verstellbar, damit das Folgeglied an Bänder unterschiedlicher Dicke angepaßt werden kann.The following link is designed as a pair of rollers with two guide rollers arranged at a distance from one another corresponding to the strip thickness, the strip between the receiving rollers. So that the pair of rollers can adjust itself according to the curve of the belt, it is pivoted about an axis perpendicular to the plane of curvature of the belt. The distance between the guide rollers is preferably adjustable so that the follower can be adapted to belts of different thicknesses.

Weitere Ausgestaltungen der erfindungsgemäßen Drallschleifeinrichtung ergeben sich aus den Patentansprüchen, der Zeichnung und der Zeichnungsbeschreibung. In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt, die im folgenden näher beschrieben sind. Es zeigen:

Figur 1
in einer perspektivischen Darstellung eine Drallschleifeinrichtung mit gekrümmtem Leitlineal;
Figur 2
schematisch ein gekrümmtes Leitlineal gemäß Figur 1 mit Mitteln zum Halten dieses Leitlineals;
Figur 3
eine Einzelheit aus Figur 2 in einer anderen Ansicht;
Figur 4
ein anderes Ausführungsbeispiel eines Stützlagers für das Leitlineal gemäß Figur 2 in einer Vorderansicht;
Figur 5
das Stützlager gemäß Figur 4 in einem Längsschnitt;
Figur 6
eine Klemmplatte für die Montage einer Rolle der Folgeeinrichtung in einer Vorderansicht;
Figur 7
die Klemmplatte gemäß Figur 6 in einem Längsschnitt.
Further refinements of the swirl grinding device according to the invention result from the patent claims, the drawing and the description of the drawing. In the drawing, embodiments of the invention are shown, which are described in more detail below. Show it:
Figure 1
a perspective view of a swirl grinding device with a curved guide ruler;
Figure 2
schematically a curved guide ruler according to Figure 1 with means for holding this guide ruler;
Figure 3
a detail of Figure 2 in another view;
Figure 4
another embodiment of a support bearing for the ruler according to Figure 2 in a front view;
Figure 5
the support bearing according to Figure 4 in a longitudinal section;
Figure 6
a clamping plate for mounting a roller of the follower in a front view;
Figure 7
the clamping plate according to Figure 6 in a longitudinal section.

Die in Figur 1 dargestellte Drallschleifeinrichtung 2 ist Teil einer herkömmlichen Werkzeugschleifmaschine, von der außerdem die mit einem Schleifantrieb gekoppelte Schleifscheibe 4 zu sehen ist.The swirl grinding device 2 shown in FIG. 1 is part of a conventional tool grinding machine, from which the grinding wheel 4 coupled to a grinding drive can also be seen.

Die Drallschleifeinrichtung 2 umfaßt eine Werkzeugspindel 6, die um die Spindelachse 8 drehbar in einem Spindelbock 10 gelagert ist, welcher seinerseits in Richtung des Pfeils 38, d.h. in Richtung der Spindelachse 8 verschiebbar ist. Die Drehantriebsvorrichtung 12 umfaßt ein mit der Werkzeugspindel verbundenes Kegelrad 14, ein mit diesem kämmendes Kegelrad 16, ein mit dem Kegelrad 16 verbundenes Zahnritzel 18 sowie eine mit dem Zahnritzel 18 in Eingriff befindliche Zahnstange 20, die in der senkrechten Säule 22 des Spindelbockes 10 vertikal verschiebbar gelagert ist. An der Zahnstange 20 ist ein Rollenpaar 24, 26 angeordnet, dessen Funktion weiter unten näher erläutert wird.The twist grinding device 2 comprises a tool spindle 6, which is rotatably mounted about the spindle axis 8 in a spindle block 10, which in turn in the direction of arrow 38, i.e. is displaceable in the direction of the spindle axis 8. The rotary drive device 12 comprises a bevel gear 14 connected to the tool spindle, a bevel gear 16 meshing with it, a toothed pinion 18 connected to the bevel gear 16, and a toothed rack 20 which is in engagement with the pinion 18 and which is vertically displaceable in the vertical column 22 of the spindle bracket 10 is stored. A pair of rollers 24, 26 is arranged on the rack 20, the function of which is explained in more detail below.

An einem bezüglich des verschiebbaren Spindelbockes 10 feststehenden Haltebock 28 ist ein Linealträger 30 parallel zur Pfeilrichtung 38 einstellbar befestigt, welcher eine Montagescheibe 32 umfaßt, die um eine die Spindelachse 8 kreuzende Schwenkachse 34 verschwenkbar und in jeder Schwenkstellung feststellbar ist. An der der Säule 22 zugewandten Stirnseite der Montageplatte 32 ist ein gekrümmtes Leitlineal 36 befestigt.A ruler support 30 is fastened in an adjustable manner parallel to the direction of the arrow 38 on a holding bracket 28 which is fixed with respect to the displaceable spindle bracket 10 and which comprises a mounting disc 32 which can be pivoted about a pivot axis 34 crossing the spindle axis 8 and can be locked in any swivel position. A curved guide ruler 36 is fastened to the end face of the mounting plate 32 facing the column 22.

Die die Folgeeinrichtung bildenden Rollen 24, 26 sind so angeordnet, daß sie auf der Unterseite bzw. der Oberseite des Leitlineals 36 abrollen können. Wie die Figur 1 erkennen läßt, ist das Leitlineal 36 ein flexibles elastisches Band, welches mit einer Seitenkante im wesentlichen senkrecht auf der Montageplatte 32 steht und durch geeignete, weiter unten näher beschriebene Mittel in seiner Form und Lage gehalten wird.The rollers 24, 26 forming the follow-up device are arranged such that they can roll on the underside or the top of the guide ruler 36. As can be seen in FIG. 1, the guide ruler 36 is a flexible elastic band which is essentially perpendicular to the mounting plate 32 with one side edge and is held in its shape and position by suitable means described in more detail below.

Die Funktionsweise der Einrichtung ist folgende: Bei einer Verschiebung des Spindelbockes 10 in Richtung des Pfeiles 38, d.h. in Richtung der Spindelachse 8 rollen die Rollen 24, 26 auf dem Leitlineal 36 ab. Wenn, wie in Figur 1 dargestellt, die Montageplatte 32 in einem Winkel zur Verschieberichtung 38 eingestellt ist, werden bei einer Verschiebung des Spindelbockes 10 in Richtung des Pfeiles 38 die Rollen 24, 26 vom Leitlineal 36 vertikal verstellt und nehmen die Zahnstange 20 mit. Die Vertikalbewegung der Zahnstange 20 wird auf das Zahnritzel 18 und damit auf die Tellerräder 16, 14 übertragen, so daß die Werkzeugspindel 6 verdreht wird. Auf diese Weise wird die Verdrehung der Werkzeugspindel und damit des in dieser eingespannten Werkzeuges 40 gemäß einer feststehenden Funktion mit dem Verschiebeweg des Werkzeuges 40 in Richtung des Pfeiles 38 gekoppelt. Die Winkeleinstellung der Montageplatte 32 entspricht etwa einer mittleren Steigung der Werkzeugschneiden, die etwa in der Mitte der axialen Länge des Werkzeuges gegeben ist. Die zur Erzielung des konstanten Drallwinkels erforderliche Steigungsänderung zum vorderen bzw. hinteren Werkzeugende hin wird durch die veränderliche Steigung des Leitlineals 36 infolge der Krümmung dieses Lineals berücksichtigt.The function of the device is as follows: When the spindle bracket 10 is moved in the direction of the arrow 38, ie in the direction of the spindle axis 8, the rollers 24, 26 roll on the guide ruler 36. If, as shown in FIG. 1, the mounting plate 32 is set at an angle to the direction of displacement 38, when the headstock 10 is displaced in the direction of the arrow 38, the rollers 24, 26 are vertically adjusted by the guide ruler 36 and take the rack 20 with them. The vertical movement of the rack 20 is transmitted to the pinion 18 and thus to the ring gears 16, 14, so that the tool spindle 6 is rotated. In this way, the rotation of the tool spindle and thus of the tool 40 clamped in it is coupled to the displacement path of the tool 40 in the direction of arrow 38 according to a fixed function. The angle setting of the mounting plate 32 corresponds approximately to an average pitch of the tool cutting edges, which is given approximately in the middle of the axial length of the tool. The for Achieving the constant swirl angle required slope change towards the front or rear tool end is taken into account by the variable slope of the guide ruler 36 due to the curvature of this ruler.

Wie ebenfalls aus Figur 1 zu erkennen ist, bestehen die Mittel, durch die das Leitlineal 36 in seiner Lage und Form gehalten wird, im wesentlichen aus einem an die Montageplatte 32 anschraubbaren Riegel 42, an dessen Enden Stützlager zum Abstützen der Endbereiche des Leitlineals angeordnet sind, und in dessen zwischen den Stützlagern befindlichem Bereich wenigstens eine Stellschraube vorgesehen ist, die das Leitlineal 36 in der gewünschten Richtung auslenkt.As can also be seen from FIG. 1, the means by which the guide ruler 36 is held in its position and shape essentially consist of a bolt 42 which can be screwed onto the mounting plate 32 and at whose ends support bearings are arranged for supporting the end regions of the guide ruler , and in the area between the support bearings at least one adjusting screw is provided which deflects the guide ruler 36 in the desired direction.

Figuren 2 und 3 zeigen in einer vergrößerten Darstellung einen etwa dem Riegel 42 aus Figur 1 entsprechenden Riegel 44, welcher über durch die Befestigungsbohrungen 46 hindurchsteckbare Befestigungsschrauben 47 (siehe Figur 3) an der Montageplatte 32 angeschraubt werden kann. An den Enden des Riegels 44 sind Stützlager 48, 50 angeordnet, die in ihrem Abstand verstellbar sind, wie durch die Pfeile 52 angedeutet ist. Die Stützlager 48, 50 in Figur 2 sind als reine Auflager ausgebildet, auf denen das Leitlineal 36 lose aufliegt. Zur seitlichen Verstellung der Stützlager 48, 50 ist der Riegel 44 mit Langlöchern 54 versehen (siehe Draufsicht in Figur 3), durch die Befestigungsschrauben 56 hindurchgreifen, die in entsprechende Gewindebohrungen der Stützlager 48 bzw. 50 eingeschraubt werden.FIGS. 2 and 3 show in an enlarged view a bolt 44 corresponding approximately to the bolt 42 from FIG. 1, which can be screwed onto the mounting plate 32 by means of fastening screws 47 (see FIG. 3) which can be pushed through the fastening bores 46. At the ends of the bolt 44 support bearings 48, 50 are arranged, which are adjustable in their distance, as indicated by the arrows 52. The support bearings 48, 50 in FIG. 2 are designed as pure supports on which the guide ruler 36 lies loosely. For the lateral adjustment of the support bearings 48, 50, the bolt 44 is provided with elongated holes 54 (see plan view in FIG. 3), through which the fastening screws 56 extend, which are screwed into corresponding threaded holes in the support bearings 48 and 50, respectively.

In der Mitte zwischen den Stützlagern 48, 50 ist eine erste Stellschraube 58 vorgesehen, die durch eine Gewindebohrung 60 im Riegel 44 hindurchgreift und mit dem Leitlineal 36 über einen Verbindungsschuh 62 verbunden ist; dieser Verbindungsschuh ist so ausgebildet, daß er eine Verdrehung der Stellschraube 58 zuläßt und daß er Zug- und Druckkräfte auf das Leitlineal 36 übertragen kann. Durch Verstellen der Stellschraube 58 wird eine gewünschte Krümmung des Leitlineals 36 eingestellt.In the middle between the support bearings 48, 50, a first set screw 58 is provided, which by a Threaded bore 60 engages in the bolt 44 and is connected to the guide rule 36 via a connecting shoe 62; this connecting shoe is designed so that it allows the adjusting screw 58 to be rotated and that it can transmit tensile and compressive forces to the guide ruler 36. A desired curvature of the guide ruler 36 is set by adjusting the set screw 58.

Wie Figur 2 weiterhin andeutungsweise zeigt, kann dem Riegel 44 gegenüberliegend ein weiterer Riegel 64 auf der Montageplatte 32 befestigt sein, von dem in Figur 2 nur das linke Ende dargestellt ist. Dieser Riegel 64 trägt Stützlager 66, auf die sich das Leitlineal 36 auflegt, wenn es nach unten gekrümmt werden soll, wie durch gestrichelte Linien angedeutet ist. Das dargestellte Stützlager kann ebenso wie alle anderen Stützlager seitlich verschoben und in die gestrichelt dargestellte Stellung umgeschlagen werden, um den Stützabstand für das Leitlineal 36 zu variieren.As FIG. 2 also indicates, another bolt 64 can be fastened on the mounting plate 32 opposite the bolt 44, of which only the left end is shown in FIG. This bolt 64 carries support bearings 66, on which the guide ruler 36 rests when it is to be curved downward, as indicated by broken lines. The support bearing shown, like all other support bearings, can be moved laterally and turned over to the position shown in broken lines in order to vary the support distance for the guide ruler 36.

Um die Form der Krümmungslinien weiter variieren zu können, sind weitere Stellschrauben vorgesehen, die in Figur 2 durch ihre Mittellinien 68, 70 symbolisiert sind. Zur Lagerung dieser Stellschrauben am Riegel 44 sind zylindrische Gewindebuchsen 72, 74 vorgesehen, die in den Riegel 44 von seiner Vorderseite zur Hinterseite durchsetzenden Langlöchern 76, 78 aufgenommen sind und die quer zu ihrer Zylinderachse verlaufende Gewindebohrungen zur Aufnahme der Stellschrauben 68, 70 aufweisen. Im montierten Zustand durchsetzen die Stellschrauben 68, 70 jeweils einen von der Oberseite zur Unterseite des Riegels 44 verlaufenden Schlitz 80, 82, welcher etwa die Form eines Stundenglases hat und damit eine Schwenkung der jeweiligen Stellschraube 68, 70 in der in Figur 2 angedeuteten Weise ermöglicht. Damit kann einerseits ein seitlicher Versatz der Anlenkpunkte der Stellschrauben 68, 70 durch die Krümmung des Leitlineals kompensiert werden, andererseits besteht die Möglichkeit, die Stellschrauben an Anlenkpunkten angreifen zu lassen, die mehr oder weniger weit vom Anlenkpunkt der mittleren Stellschraube 58 entfernt sind.In order to be able to vary the shape of the lines of curvature further, further adjusting screws are provided, which are symbolized in FIG. 2 by their center lines 68, 70. To mount these set screws on the bolt 44, cylindrical threaded bushings 72, 74 are provided, which are received in the bolt 44 from the front to the rear through holes 76, 78 and which have threaded holes transverse to their cylinder axis for receiving the set screws 68, 70. In the assembled state, the adjusting screws 68, 70 each penetrate a slot 80, 82 which runs from the top to the underside of the bolt 44 and which has approximately the shape of an hourglass and thus pivots the respective adjusting screw 68, 70 in enables the manner indicated in Figure 2. On the one hand, this allows a lateral offset of the articulation points of the adjusting screws 68, 70 to be compensated for by the curvature of the guide rail, on the other hand there is the possibility of having the adjusting screws act on articulation points that are more or less far from the articulation point of the central adjusting screw 58.

Die Stellschrauben 68, 70 sind über Gelenke 83, 85 mit Verbindungsschuhen 84, 86 verbunden, die am Leitlineal 36 befestigt sind. Diese Gelenke 83, 85 ermöglichen unterschiedliche Schrägstellungen der Stellschrauben 68, 70 zum Leitlineal 36.The set screws 68, 70 are connected via joints 83, 85 to connecting shoes 84, 86 which are fastened to the guide ruler 36. These joints 83, 85 allow different inclinations of the adjusting screws 68, 70 to the guide ruler 36.

Die Figuren 4 und 5 zeigen ein anderes Ausführungsbeispiel eines Stützlagers 88. Es besteht im wesentlichen aus einem kreiszylindrischen Drehkloben, welcher um eine zur Zylinderachse parallele Schwenkachse 90 schwenkbar an der Montageplatte 32 montiert ist. Ein zur Schwenkachse 90 koaxialer Achsenkörper 92 durchsetzt das Stützlager 88 und ist durch eine von der Rückseite der Montageplatte 32 her in diese eingeschraubte Halteschraube 94 gehalten. Die Halteschraube 94 durchsetzt ein in der Montageplatte 32 ausgebildetes Langloch 96, so daß das Stützlager 88 verschiebbar und damit der Abstand zweier in den beiden Endbereichen der Montageplatte 32 angeordneter Stützlager veränderlich ist. Das Stützlager 88 weist einen Aufnahmeschlitz 98 auf, in welchen das Leitlineal 36 eingelegt werden kann. Das eingelegte Leitlineal 36 kann durch eine Klemmschraube 100 festgeklemmt werden. Da das Stützlager 88 um die Schwenkachse 90 drehbar ist, kann sich der Aufnahmeschlitz 98 und damit das darin gehaltene Leitlineal 36 dem jeweiligen Verlauf dieses Leitlineals in seinem Endbereich anpassen, wie in Figur 4 durch gestrichelte Linien angedeutet ist. Das Stützlager 88 wirkt deshalb ebenso wie die weiter vorne beschriebenen Stützlager nicht als Einspannung für das Leitlineal 36, sondern technisch wie ein Auflager.FIGS. 4 and 5 show another exemplary embodiment of a support bearing 88. It essentially consists of a circular-cylindrical rotary block which is mounted on the mounting plate 32 so as to be pivotable about a pivot axis 90 parallel to the cylinder axis. An axis body 92 coaxial with the pivot axis 90 passes through the support bearing 88 and is held by a retaining screw 94 screwed into the mounting plate 32 from the rear side thereof. The retaining screw 94 passes through an elongated hole 96 formed in the mounting plate 32, so that the support bearing 88 is displaceable and thus the distance between two support bearings arranged in the two end regions of the mounting plate 32 is variable. The support bearing 88 has a receiving slot 98 in which the guide ruler 36 can be inserted. The inserted guide rule 36 can be clamped by a clamping screw 100. Since the support bearing 88 is rotatable about the pivot axis 90, the receiving slot 98 and thus the guide ruler 36 held therein can adapt to the respective course of this guide ruler in its end region, such as in Figure 4 is indicated by dashed lines. The support bearing 88 therefore, like the support bearings described above, does not act as a clamp for the guide ruler 36, but technically as a support.

Wie insbesondere Figur 1 zeigt, ist das mit der Zahnstange 20 verbundene Folgeglied als Doppelrolle ausgebildet, deren eine Rolle 24 auf der Unterseite des Leitlineals und deren andere Rolle auf der Oberseite des Leitlineals 36 abrollt. Um eine bekannte Drallschleifeinrichtung mit zwei in einer Führungslinealnut hintereinander laufenden Führungsrollen für die Verwendung im Zusammenhang mit einem erfindungsgemäßen Leitlineal umzubauen, ist die in den Figuren 6 und 7 dargestellte Klemmplatte 102 vorgesehen. Die Klemmplatte 102 ist mit einer diese durchsetzenden kreisförmigen Klemmöffnung 104 versehen, die auf eine der erwähnten Führungsrollen aufgeschoben werden kann. Eine Klemmschraube 106 ermöglicht ein Festklemmen der Klemmplatte 102 auf dieser Führungsrolle. Eine Aufnahmebohrung 108 dient zur Aufnahme einer Rollenachse 110, auf der in bekannter und deshalb nicht näher dargestellter Weise eine Rolle gelagert werden kann, die mittels eines Sicherungsringes gesichert wird. Die zweite der oben erwähnten ursprünglich vorhandenen Führungsrollen zusammen mit der auf der Rollenachse 110 gelagerten Rolle bilden ein Rollenpaar, zwischen denen das Leitlineal 36 aufgenommen wird. Die Klemmplatte 102 ist mit einem Verstellschlitz 112 versehen, die eine Verstellung des Achsabstandes der auf der Rollenachse 110 gelagerten Rolle zu den beiden oben erwähnten Führungsrollen und damit eine Anpassung an unterschiedliche Leitlinealdicken erlaubt. Zur Verstellung der Breite des Verstellschlitzes 112 dient eine Klemmschraube 114, die den Klemmschlitz 112 überbrückt.As shown in FIG. 1 in particular, the follower connected to the rack 20 is designed as a double roller, one roller 24 of which rolls on the underside of the guide rail and the other roller of which rolls on the top of the guide rail 36. In order to convert a known swirl grinding device with two guide rollers running in a row in a guide ruler groove for use in connection with a guide ruler according to the invention, the clamping plate 102 shown in FIGS. 6 and 7 is provided. The clamping plate 102 is provided with a circular clamping opening 104 passing through it, which can be pushed onto one of the mentioned guide rollers. A clamping screw 106 enables clamping of the clamping plate 102 on this guide roller. A receiving bore 108 serves to receive a roller shaft 110, on which a roller can be mounted in a known and therefore not shown manner, which roller is secured by means of a locking ring. The second of the above-mentioned originally existing guide rollers together with the roller mounted on the roller axis 110 form a pair of rollers, between which the guide rule 36 is received. The clamping plate 102 is provided with an adjustment slot 112, which allows an adjustment of the center distance of the roller mounted on the roller axle 110 to the two guide rollers mentioned above and thus an adaptation to different guide rule thicknesses. A clamping screw 114, which bridges the clamping slot 112, is used to adjust the width of the adjusting slot 112.

Durch die Lagerung auf der ersten der erwähnten ursprünglich vorhandenen Führungsrollen ist die Klemmplatte 102 um die Achse dieser Führungsrolle schwenkbar, so daß das am Leitlineal 36 abrollende Rollenpaar sich dem jeweiligen Verlauf des Lineals anpassen kann.Due to the mounting on the first of the guide rollers originally mentioned, the clamping plate 102 can be pivoted about the axis of this guide roller, so that the pair of rollers rolling on the guide ruler 36 can adapt to the respective course of the ruler.

Claims (16)

  1. A spiral sharpening apparatus for sharpening spiral-fluted cutting tools (40) of a diameter which changes over the length of the tool and a constant spiral angle, including a tool spindle (6) for carrying the spiral-fluted cutting tool (40), which is mounted rotatably in a spindle support (10) displaceable in the direction (38) of the axis of the spindle, a guide bar (36) which is oriented at an adjustable angle relative to the direction (38) of displacement of the spindle support, a rotary drive device (14 to 20) for the tool spindle (6), which is actuable by way of a follower member (24, 26) which bears against the guide bar (36) and which is arranged displaceably on the spindle support and which is coupled to the rotary drive device, and a correction device for correction of the setting angle of the guide bar (36), characterised in that the guide bar (36) is in the form of a single strip which is disposed on a bunting plate (32) arranged in the plane of displacement of the follower member (24, 26), with a longitudinal edge, and which can be fixed on the mounting plate (32) by way of its edge which is adjacent the mounting plate (32), in accordance with a predetermined curved shape, and that the follower member is formed by two rollers (24, 26) which, at the edge remote from the bunting plate (32), bear against the underside and the top side respectively of the strip.
  2. A spiral sharpening apparatus according to claim 1 characterised in that the guide bar (36) has an irregular curvature over its length.
  3. A spiral sharpening apparatus according to claim 1 or claim 2 characterised in that the curvature of the guide bar (36) is variable.
  4. A spiral sharpening apparatus according to one of claims 1 to 3 characterised in that the guide bar (36) is in the form of an elastic strip and that there are provided means (48, 50, 58) for clamping the strip in a predetermined position and shape.
  5. A spiral sharpening apparatus according to claim 4 characterised in that the means for clamping the guide bar (36) include at least two support mountings (48, 50) for supporting the end regions of the guide bar (36) and at least one displaceable deflection device (58) disposed between the support mountings (48, 50).
  6. A spiral sharpening apparatus according to claim 5 characterised in that the support mountings (48, 50) are variable in respect of their mutual spacing.
  7. A spiral sharpening apparatus according to claim 5 or claim 6 characterised in that the support mountings (48, 50) are in the form of contact bearing members.
  8. A spiral sharpening apparatus according to claim 7 characterised in that the support mountings (48, 50) can be changed over for different support directions.
  9. A spiral sharpening apparatus according to claim 5 or claim 6 characterised in that the support mountings (66) respectively include two contact bearing members which are arranged in the plane of curvature of the guide bar (36) at a spacing relative to each other which corresponds to the thickness of the guide bar (36).
  10. A spiral sharpening apparatus according to claim 9 characterised in that the support mountings (88) are respectively in the form of rotary blocks (90) which are provided with a receiving slot (98) for receiving the guide bar (36) and which are mounted pivotably about a pivot axis (90) which is perpendicular to the plane of curvature of the guide bar (36).
  11. A spiral sharpening apparatus according to one of claims 5 to 10 characterised in that the deflection device is formed by one or more adjusting screws (58, 68, 70).
  12. A spiral sharpening apparatus according to claim 11 characterised in that the adjusting screws (68, 70) are each guided in screwthreaded bushes (72, 74) mounted pivotably about pivot axes disposed perpendicularly to the plane of curvature of the guide bar (36).
  13. A spiral sharpening apparatus according to claim 11 or claim 12 characterised in that the adjusting screws (68, 70) are connected to the guide bar (36) by way of connecting shoes (84, 86) which transmit tensile and compression forces to the guide bar (36) and which are pivotably connected to the respective adjusting screw (68, 70).
  14. A spiral sharpening apparatus according to one of claims 1 to 13 characterised in that the pair of rollers (24, 26) is mounted pivotably about a pivot axis which is disposed perpendicularly to the plane of curvature of the guide bar (36).
  15. A spiral sharpening apparatus according to one of claims 1 to 14 characterised in that the spacing of the guide rollers relative to each other is adjustable.
  16. A spiral sharpening apparatus according to one of claims 4 to 15 characterised in that the guide bar (38) is arranged on a mounting plate (32) which is parallel to the axis (8) of the tool spindle and which is pivotable about a pivot axis (34) disposed perpendicularly to the axis (8) of the tool spindle, that the guide bar (36) is arranged with a side edge disposed substantially perpendicularly on the mounting plate (32) and that the follower member (24, 26) is mounted on the spindle support (10) displaceably transversely to the axis (8) of the tool spindle in a plane parallel to the plane of the mounting plate and is coupled to the tool spindle (6) by a rack-and-pinion transmission (20, 18, 16, 14).
EP19890116677 1989-09-08 1989-09-08 Apparatus for spiral sharpening Expired - Lifetime EP0416167B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE89116677T DE58906322D1 (en) 1989-09-08 1989-09-08 Swirl grinding device.
EP19890116677 EP0416167B1 (en) 1989-09-08 1989-09-08 Apparatus for spiral sharpening

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19890116677 EP0416167B1 (en) 1989-09-08 1989-09-08 Apparatus for spiral sharpening

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EP0416167A1 EP0416167A1 (en) 1991-03-13
EP0416167B1 true EP0416167B1 (en) 1993-12-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101722443B (en) * 2010-02-04 2012-02-01 孙效 Profiling type blade grinding machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107553229A (en) * 2017-09-15 2018-01-09 江门市江海区杰能机电科技有限公司 A kind of four shaft-driven cutter-scissor grinders
CN107617935A (en) * 2017-10-13 2018-01-23 苏州利森空调制冷有限公司 Single screw compressor main rotor cutter grinding frock

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE292957C (en) * 1915-04-20
DE1300400B (en) * 1966-07-18 1969-07-31 Kipnis Ardon Control device
FR2144284A5 (en) * 1971-06-30 1973-02-09 Habib Robert

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101722443B (en) * 2010-02-04 2012-02-01 孙效 Profiling type blade grinding machine

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DE58906322D1 (en) 1994-01-13
EP0416167A1 (en) 1991-03-13

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