EP2161099A2 - Grinding machine - Google Patents

Grinding machine Download PDF

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Publication number
EP2161099A2
EP2161099A2 EP09011250A EP09011250A EP2161099A2 EP 2161099 A2 EP2161099 A2 EP 2161099A2 EP 09011250 A EP09011250 A EP 09011250A EP 09011250 A EP09011250 A EP 09011250A EP 2161099 A2 EP2161099 A2 EP 2161099A2
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EP
European Patent Office
Prior art keywords
axis
spindle
grinding
workpiece
workpiece spindle
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EP09011250A
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German (de)
French (fr)
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EP2161099B1 (en
EP2161099A3 (en
Inventor
Hubert Ambros Reiser
Peter Erchinger
Hans-Dieter Braun
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Haas Schleifmaschinen GmbH
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Haas Schleifmaschinen GmbH
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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
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/34—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of turning or planing tools or tool bits, e.g. gear cutters
    • B24B3/343—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of turning or planing tools or tool bits, e.g. gear cutters of throw-away cutting bits
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
    • B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs

Definitions

  • the invention relates to a grinding machine for circumferential and contour grinding of workpieces.
  • the plan sides of the cutting insert are first ground in a first step. Subsequently, the periphery is ground to give the insert its shape, and finally the contour, that is, the cutting edge profile of the inserts is ground.
  • the cutting plates are usually clamped between two rams aligned in a clamping axis, which have a controlled rotary drive in order to position the workpiece in the circumferential direction with respect to the grinding tool.
  • a grinding machine for grinding indexable inserts in which the cutting plates between two tappets of a rotatably driven workpiece spindle is clamped.
  • the workpiece spindle is movable in a linear axis parallel to its axis of rotation.
  • a rotationally drivable grinding spindle carries a grinding tool, which is designed as a flat grinding wheel.
  • the grinding spindle is mounted in a wheel spindle, which is movable in a direction perpendicular to the axis of the workpiece spindle linear axis.
  • the axis of the grinding spindle lies in the plane, which is spanned by the linear axes of movement of the workpiece spindle and the grinding headstock.
  • the grinding spindle axis is pivotable in that the grinding headstock is pivotable about a grinding spindle pivot axis perpendicular to this plane.
  • a grinding machine for circumferential and contour grinding of cutting plates is known, in which the cutting plate to be ground between tappets of a rotating workpiece spindle driven is tensioned.
  • the workpiece spindle is pivotable about a workpiece spindle pivot axis perpendicular to its axis.
  • a rotationally drivable grinding spindle which carries a grinding tool embodied as a plane grinding wheel extends in the pivoting plane of the workpiece spindle and is movable in this plane in two mutually perpendicular linear axes.
  • All these known grinding machines have in common that these grinding machines are designed as four-axis grinding machines.
  • the workpiece spindle and the grinding spindle are displaceable against each other in two linear axes.
  • the tensioned in the workpiece spindle cutting plate is rotatable about a rotational axis by means of the workpiece spindle to edit the different peripheral regions of the cutting plate by means of the grinding tool.
  • the axes of the workpiece spindle and the grinding spindle can be pivoted in a plane enclosing the workpiece spindle axis against each other to the angle of attack of the grinding tool relative to the cutting plate to change.
  • the cutting plates or indexable cutting edges ground in a preceding processing step on their plan sides are clamped between the rams of the workpiece spindle and can be ground in this one clamping both in its peripheral shape by the cutting plate is rotated by means of the workpiece spindle, as well as in its contour, ie the profile shape of the cutting edge edge by the axes of the grinding spindle and the tool spindle are pivoted against each other.
  • a grinding machine according to the preamble of claim 1 is known, with which a 6-axis grinding machining is possible.
  • the grinding spindle carrying the grinding tool is moved numerically controlled in two linear axes, wherein the grinding spindle in addition to a grinding spindle axis perpendicular to the grinding spindle pivot axis is pivotable.
  • the workpiece can be clamped on a workpiece spindle, which can be driven in rotation about its workpiece spindle axis.
  • the workpiece spindle axis is pivotable about a workpiece spindle pivot axis intersecting this workpiece spindle axis and mounted on a carriage movable in the third linear axis.
  • the structure of this grinder is expensive. A conversion of the grinding machine for the processing of different workpieces is difficult.
  • the invention has for its object to provide a grinding machine for circumferential and contour grinding of workpieces, in particular of cutting inserts and indexable inserts available, which allows grinding in a single clamping of the workpiece and a flexible conversion for adaptation to different workpieces.
  • the grinding machine according to the invention is designed as a six-axis grinding machine.
  • the rotationally drivable grinding spindle, on which the grinding tool is clamped, and the workpiece spindle, which can be driven in rotation, on which the workpiece, in particular an insert or indexable insert can be tensioned, are movable numerically controlled in three linear axes relative to one another.
  • the workpiece clamping the workpiece exciting is controlled to rotate about its axis to the grinding tool with the various peripheral areas of To be able to engage workpieces.
  • the workpiece spindle is further controlled pivotable about a workpiece spindle pivot axis intersecting its axis, so that the grinding tool can descend the profile contour of the cutting plate.
  • the grinding spindle is also pivotable about a grinding spindle pivot axis as the third rotary axis, this grinding spindle pivot axis running transversely to the grinding spindle axis.
  • this third rotary axis it is possible to pivot the grinding spindle axis at an angle relative to the workpiece spindle, so that the axis of the grinding spindle and thus the axis of the rotating grinding tool intersects the pivot plane of the workpiece spindle.
  • the grinding tool can also be aligned with its axis of rotation in relation to the workpiece so that the grinding tool engages the workpiece parallel to the axis of the workpiece spindle and thus to the axis of the workpiece.
  • concave peripheral lines and concave contour surfaces of the workpiece can be ground without the workpiece has to be re-clamped.
  • the workpiece spindle and a servomotor which can be driven in rotation by said workpiece spindle are accommodated in a clamping device which can be mounted on the workpiece pivot spindle as a modular structural unit.
  • a clamping device which can be mounted on the workpiece pivot spindle as a modular structural unit.
  • a conventional grinding machine with an axis of rotation for the workpiece can be converted by means of the clamping device in a simple manner in a grinding machine with an additional workpiece rotation axis.
  • the modular design of the clamping device allows easy conversion of the grinding machine to adapt to different Workpieces, since all necessary for the clamping of the workpiece elements are arranged in the clamping device.
  • FIG. 1 is shown schematically the basic structure of a grinding machine.
  • the grinding machine has a machine bed 10 with a vertical rear wall 12.
  • a table 14 is arranged, which is in a horizontal Y-axis perpendicular to the front operator side and the rear wall 12 numerically controlled linearly movable.
  • a cross slide is arranged, which is numerically controlled in a direction perpendicular to the Y-axis horizontal linear X-axis and in a direction perpendicular to the X-axis and the Y-axis vertical linear Z-axis.
  • a grinding spindle unit 18 is arranged, which is mounted for rotation about a Z axis parallel to the C-axis rotatably mounted in the carriage 16 and driven by this C-axis numerically controlled is pivotable.
  • a grinding spindle is horizontally mounted, which is driven by a spindle motor 20 and at its free end a grinding tool 22 carries, which is shown in the drawing as a cup-shaped grinding wheel, but may also be designed as a flat grinding wheel.
  • a workpiece pivot spindle unit 24 is arranged, which receives a workpiece pivot spindle 26.
  • the workpiece swing spindle 26 is rotatable by means of a motor 28 numerically controlled about its axis parallel to the X axis A-axis.
  • a clamping device is mounted on the workpiece pivot spindle 26, as in FIG. 4 is shown.
  • the clamping device is a self-contained unit that can be modularly mounted on the A-axis.
  • the tensioning device has a main body 30.
  • coupling means are mounted, with which the base body 30 can be fixedly connected to the workpiece pivot spindle 26.
  • the coupling means consist in the illustrated embodiment of a shaft taper 32 which is inserted into the receiving flange of the workpiece pivot spindle 26 and screwed thereto.
  • the main body 30 is thus controlled via the workpiece pivot spindle 26 pivotable about the A-axis.
  • a workpiece spindle is mounted in the main body 30.
  • a servo motor 34 is firmly received in the main body 30.
  • a counter-ram 38 is mounted, which is coaxially aligned with the motor shaft of the servomotor 34.
  • the counter-ram 38 can be numerically controlled by means of the servomotor 34 about its central axis, which is referred to as workpiece spindle axis, are rotated.
  • the servomotor 34 and the counter-ram 38 are arranged in the base body 30 so that the axis of the counter-ram 38, ie the workpiece spindle axis orthogonally intersects the central axis of the shaft cone 32 and thus the A-axis. Accordingly, the workpiece spindle axis may also be referred to as a B axis, as shown in FIG FIG. 2 is indicated.
  • a guide block 40 is mounted in the base body 30 below the workpiece spindle axis and spaced therefrom.
  • the guide block 40 is guided linearly displaceably in the main body 30 in a direction parallel to the workpiece spindle axis.
  • the base body 30 for example, a recess in which the guide block 40 is arranged and slides on guides 42 which are parallel to the workpiece spindle axis and mounted in the base body 30.
  • the guides 42 are formed in the illustrated embodiment as guide rods.
  • the guide block 40 can move freely on the guides 42 with a stroke of, for example, about 10 millimeters.
  • a guide bush 44 is attached on the guide block 40.
  • the guide bush 44 is aligned axially aligned with the central axis of the counter-ram 38.
  • a clamping ram 46 is guided free of play both axially and rotationally freely movable.
  • the clamping ram 46 is preferably formed conically at its end facing the counter-ram 38 end.
  • a workpiece, in particular an indexable insert 48 can be clamped between the counter-ram 38 and the clamping ram 46 by arranging the indexable insert 48 centered on the workpiece spindle axis and the clamping ram 46 is moved by force against the counter-ram 38.
  • the clamping ram 46 can penetrate into a clamping recess or clamping bore of the indexable insert 48 in order to clamp it centered on the counter-ram 38.
  • the indexable insert 48 can be detected, for example, by a handling gripper 68, which is moved by means of the cross slide 16.
  • the handling gripper 68 places the ground indexable insert 48, for example in a cassette 70, removes the cassette 70 from an unpolished indexable insert 48 and brings it into the clamping position between the counter-ram 38 and the clamping ram 46.
  • the workpiece namely the indexable insert 48
  • the workpiece is ground by means of the grinding wheel 22.
  • the grinding wheel 22 is delivered in the X-axis and the Z-axis, while a feed movement in the Y-axis via the table 14 can take place.
  • the clamping device is pivoted about the A-axis such that the workpiece spindle axis defined by the counter-ram 38 and the clamping ram 46 is horizontal, i. parallel to the Y-axis.
  • the circumference can now be ground by the counter-ram 38 is rotated by means of the servo motor 34 about the workpiece spindle axis.
  • the workpiece, the indexable insert 48 is frictionally rotated and also the clamping rod 46 rotates freely in the guide bushing 44. Subsequently, the cutting contour of the insert 48 can be ground in the same voltage, for which purpose the clamping device is pivoted about the A-axis by means of the motor 28 , As a result, the angle of attack of the workpiece spindle axis is pivoted against the axis of the grinding wheel 22 to produce, for example, chamfers of the cutting edge, clearance angle surfaces on the circumference and any troughs in the plate planes.
  • the grinding spindle can be pivoted with the grinding tool 23 about the C-axis, also the angle can be adjusted, which includes the grinding spindle axis with the plane, in which the workpiece spindle axis is pivoted when the clamping device is rotated about the A-axis.
  • cup-shaped grinding wheels 22 which are formed with abrasive coatings on the outer circumference and / or on the inner circumference and / or on the front edge.
  • flat grinding wheels can be used which have abrasive linings on the outer circumference and / or on the lateral edge surfaces.
  • These grinding tools can engage the workpiece, in particular an indexable insert, such that the grinding movement runs in the circumferential direction of the indexable insert.
  • the grinding spindle is pivoted about the C-axis so that it lies in the pivot plane of the workpiece spindle axis, ie in the YZ plane.
  • the grinding spindle can also be pivoted about the C axis to a position in which it is perpendicular to the pivot plane of the workpiece spindle axis, ie parallel to the X axis, as in FIG. 2 is shown.
  • the grinding movement runs perpendicular to the indexable insert and its circumferential direction. This also allows concave peripheral lines and contour surfaces to be ground.
  • the positioning of the grinding tool relative to the circumference of the indexable insert is effected by the controlled X-axis, while the feed in the contour is effected by the controlled Y-axis. All grinding operations can be carried out in the same clamping of the workpiece.
  • the counter-ram 38 is shaped so that its diameter decreases conically from the end flanged to the shaft flange of the servomotor 34 against the end abutting the workpiece 48.
  • the plungers 38 and 46 on either side of the tensioned indexable insert 48 a small diameter, so that sufficient space is available to attack with the grinding wheel 22 on both sides of the insert 48 can.

Abstract

The machine has a grinding tool (22) clamped at a rotatably driven grinding spindle. A workpiece e.g. cutting insert, is clamped at a counter plunger and a clamping plunger. A clamping device is mounted at a workpiece pivoting spindle (26). The clamping device includes a base body (30), where a servomotor is fixedly accommodated in the base body. The clamping device is fixedly mounted as a modular assembly at the workpiece pivoting spindle with a coupling unit. A workpiece spindle axis intersects a workpiece spindle pivot axis at a right angle when the clamping device is mounted.

Description

Die Erfindung betrifft eine Schleifmaschine zum Umfangs- und Konturschleifen von Werkstücken.The invention relates to a grinding machine for circumferential and contour grinding of workpieces.

Bei der Schleifbearbeitung von scheibenförmigen Werkstücken ist es häufig notwendig, den Umfang des Werkstückes und dessen Kontur zu schleifen. Beispielsweise werden bei Schneidplatten und insbesondere Wendeschneidplatten für spanabhebende Werkzeugmaschinen zunächst in einem ersten Schritt die Planseiten der Schneidplatte geschliffen. Anschließend wird der Umfang geschliffen, um der Schneidplatte ihre Form zu geben, und schließlich wird die Kontur, das heißt das Schneidkantenprofil der Schneidplatten geschliffen. Für die beiden letztgenannten Schleifbearbeitungen werden die Schneidplatten üblicherweise zwischen zwei in einer Spannachse fluchtenden Stößeln gespannt, die einen gesteuerten Drehantrieb aufweisen, um das Werkstück in Umfangsrichtung in Bezug auf das Schleifwerkzeug zu positionieren.In the grinding of disc-shaped workpieces, it is often necessary to grind the circumference of the workpiece and its contour. For example, in cutting inserts and in particular indexable inserts for cutting machine tools, the plan sides of the cutting insert are first ground in a first step. Subsequently, the periphery is ground to give the insert its shape, and finally the contour, that is, the cutting edge profile of the inserts is ground. For the two last-mentioned grinding operations, the cutting plates are usually clamped between two rams aligned in a clamping axis, which have a controlled rotary drive in order to position the workpiece in the circumferential direction with respect to the grinding tool.

Aus der DE 10 2006 035 845 A1 ist eine Schleifmaschine zum Schleifen von Wendeschneidplatten bekannt, bei welcher die Schneidplatten zwischen zwei Stößeln einer rotierend antreibbaren Werkstückspindel gespannt wird. Die Werkstückspindel ist in einer zu ihrer Rotationsachse parallelen linearen Achse bewegbar. Eine rotierend antreibbare Schleifspindel trägt ein Schleifwerkzeug, welches als plane Schleifscheibe ausgebildet ist. Die Schleifspindel ist in einem Schleifspindelstock gelagert, der in einer zur Achse der Werkstückspindel senkrechten linearen Achse bewegbar ist. Die Achse der Schleifspindel liegt dabei in der Ebene, die von den linearen Bewegungsachsen der Werkstückspindel und des Schleifspindelstocks aufgespannt wird. In dieser Ebene ist die Schleifspindelachse schwenkbar, indem der Schleifspindelstock um eine zu dieser Ebene senkrechte Schleifspindel-Schwenkachse schwenkbar ist.From the DE 10 2006 035 845 A1 is a grinding machine for grinding indexable inserts is known, in which the cutting plates between two tappets of a rotatably driven workpiece spindle is clamped. The workpiece spindle is movable in a linear axis parallel to its axis of rotation. A rotationally drivable grinding spindle carries a grinding tool, which is designed as a flat grinding wheel. The grinding spindle is mounted in a wheel spindle, which is movable in a direction perpendicular to the axis of the workpiece spindle linear axis. The axis of the grinding spindle lies in the plane, which is spanned by the linear axes of movement of the workpiece spindle and the grinding headstock. In this plane, the grinding spindle axis is pivotable in that the grinding headstock is pivotable about a grinding spindle pivot axis perpendicular to this plane.

Aus der DE 42 40 063 A1 ist eine Schleifmaschine zum Umfangs- und Konturschleifen von Schneidplatten bekannt, bei welcher die zu schleifende Schneidplatte zwischen Stößeln einer rotierend antreibbaren Werkstückspindel gespannt wird. Die Werkstückspindel ist um eine zu ihrer Achse senkrechte Werkstückspindel-Schwenkachse schwenkbar. Eine rotierend antreibbare Schleifspindel, die ein als plane Schleifscheibe ausgebildetes Schleifwerkzeug trägt verläuft in der Schwenkebene der Werkstückspindel und ist in zwei zueinander senkrechten linearen Achsen in dieser Ebene bewegbar.From the DE 42 40 063 A1 is a grinding machine for circumferential and contour grinding of cutting plates is known, in which the cutting plate to be ground between tappets of a rotating workpiece spindle driven is tensioned. The workpiece spindle is pivotable about a workpiece spindle pivot axis perpendicular to its axis. A rotationally drivable grinding spindle which carries a grinding tool embodied as a plane grinding wheel extends in the pivoting plane of the workpiece spindle and is movable in this plane in two mutually perpendicular linear axes.

Aus der DE 43 01 214 A1 ist eine Schleifmaschine zum Schleifen von Schneidplatten bekannt, die im Wesentlichen der Schleifmaschine der DE 42 40 063 A1 entspricht. Das Schleifwerkzeug ist jedoch als topfförmige Schleifscheibe ausgebildet.From the DE 43 01 214 A1 is known a grinding machine for grinding cutting inserts, which is essentially the grinding machine of DE 42 40 063 A1 equivalent. However, the grinding tool is designed as a cup-shaped grinding wheel.

Allen diesen bekannten Schleifmaschinen gemeinsam ist, dass diese Schleifmaschinen als Vier-Achsen-Schleifmaschinen ausgebildet sind. Die Werkstückspindel und die Schleifspindel sind in zwei linearen Achsen gegeneinander verschiebbar. Die in der Werkstückspindel gespannte Schneidplatte ist mittels der Werkstückspindel um eine rotatorische Achse drehbar, um die unterschiedlichen Umfangsbereiche der Schneidplatte mittels des Schleifwerkzeugs zu bearbeiten. In einer zweiten rotatorischen Achse können die Achsen der Werkstückspindel und der Schleifspindel in einer die Werkstückspindelachse einschließenden Ebene gegeneinander verschwenkt werden, um den Anstellwinkel des Schleifwerkzeugs gegenüber der Schneidplatte zu ändern. Die in einem vorangehenden Bearbeitungsschritt an ihren Planseiten geschliffenen Schneidplatten bzw. Wendeschneidplatten werden zwischen den Stößeln der Werkstückspindel gespannt und können in dieser einen Aufspannung sowohl in ihrer Umfangsform geschliffen werden, indem die Schneidplatte mittels der Werkstückspindel gedreht wird, als auch in ihrer Kontur, d. h. in der Profilform des Schneidplattenrandes, indem die Achsen der Schleifspindel und der Werkzeugspindel gegeneinander verschwenkt werden.All these known grinding machines have in common that these grinding machines are designed as four-axis grinding machines. The workpiece spindle and the grinding spindle are displaceable against each other in two linear axes. The tensioned in the workpiece spindle cutting plate is rotatable about a rotational axis by means of the workpiece spindle to edit the different peripheral regions of the cutting plate by means of the grinding tool. In a second rotary axis, the axes of the workpiece spindle and the grinding spindle can be pivoted in a plane enclosing the workpiece spindle axis against each other to the angle of attack of the grinding tool relative to the cutting plate to change. The cutting plates or indexable cutting edges ground in a preceding processing step on their plan sides are clamped between the rams of the workpiece spindle and can be ground in this one clamping both in its peripheral shape by the cutting plate is rotated by means of the workpiece spindle, as well as in its contour, ie the profile shape of the cutting edge edge by the axes of the grinding spindle and the tool spindle are pivoted against each other.

Bei diesen bekannten Vier-Achsen-Schleifmaschinen können jedoch nur solche Umfanglinien und Konturflächen geschliffen werden, die plan oder konvex nach außen gewölbt sind. Solche geraden Umfangslinien sind insbesondere die Schneidkanten der Schneidplatten und insbesondere der Wendeschneidplatten. Ebene Konturflächen sind beispielsweise Fasen der Schneidkanten und an die Schneidkante anschließende Freiwinkel. Oft ist es allerdings auch erforderlich, Umfangslinien und/oder Konturflächen zu schleifen, die konkav nach innen gewölbt sind. Solche konkaven Umfangslinien und Konturflächen treten beispielsweise auf, wenn an den Schneidplatten vorspringende Zähne für das Einstichdrehen oder senkrecht zur Schneidplattenebene verlaufende Nuten ausgearbeitet werden sollen. Hierzu sind die bekannten Vier-Achsen-Schleifmaschinen nicht geeignet, sodass das Werkstück für eine separate Schleifbearbeitung nochmals gespannt werden muss.In these known four-axis grinding machines, however, only those circumferential lines and contour surfaces can be ground, which are curved flat or convex to the outside. Such straight circumferential lines are in particular the cutting edges of the cutting plates and in particular of the indexable inserts. Level contour surfaces are, for example, bevels of the cutting edges and clearance angles adjoining the cutting edge. Often, however, it is also necessary to grind circumferential lines and / or contour surfaces, which are concavely curved inwards. Such concave peripheral lines and contour surfaces occur, for example, when teeth projecting on the cutting plates for the insertion or perpendicular to the cutting plate plane extending grooves are to be worked out. For this purpose, the known four-axis grinding machines are not suitable, so that the workpiece must be stretched again for a separate grinding.

Aus der DE 28 28 168 A1 ist eine Schleifmaschine gemäß dem Oberbegriff des Patentanspruchs 1 bekannt, mit welcher eine 6-achsige Schleifbearbeitung möglich ist. Hierzu ist die das Schleifwerkzeug tragende Schleifspindel in zwei linearen Achsen numerisch gesteuert verfahrbar, wobei die Schleifspindel zusätzlich um eine zur Schleifspindelachse senkrecht verlaufende Schleifspindel-Schwenkachse verschwenkbar ist. Das Werkstück ist an einer Werkstückspindel spannbar, die um ihre Werkstückspindelachse rotierend antreibbar ist. Die Werkstückspindelachse ist um eine diese Werkstückspindelachse schneidende Werkstückspindel-Schwenkachse schwenkbar und auf einem in der dritten linearen Achse verfahrbaren Schlitten gelagert. Der Aufbau dieser Schleifmaschine ist aufwendig. Ein Umrüsten der Schleifmaschine für die Bearbeitung unterschiedlicher Werkstücke ist schwierig.From the DE 28 28 168 A1 a grinding machine according to the preamble of claim 1 is known, with which a 6-axis grinding machining is possible. For this purpose, the grinding spindle carrying the grinding tool is moved numerically controlled in two linear axes, wherein the grinding spindle in addition to a grinding spindle axis perpendicular to the grinding spindle pivot axis is pivotable. The workpiece can be clamped on a workpiece spindle, which can be driven in rotation about its workpiece spindle axis. The workpiece spindle axis is pivotable about a workpiece spindle pivot axis intersecting this workpiece spindle axis and mounted on a carriage movable in the third linear axis. The structure of this grinder is expensive. A conversion of the grinding machine for the processing of different workpieces is difficult.

Der Erfindung liegt die Aufgabe zugrunde, eine Schleifmaschine zum Umfangs- und Konturschleifen von Werkstücken, insbesondere von Schneidplatten und Wendeschneidplatten zur Verfügung zu stellen, welches die Schleifbearbeitung in einer einzigen Aufspannung des Werkstückes und ein flexibles Umrüsten zur Anpassung an unterschiedliche Werkstücke ermöglicht.The invention has for its object to provide a grinding machine for circumferential and contour grinding of workpieces, in particular of cutting inserts and indexable inserts available, which allows grinding in a single clamping of the workpiece and a flexible conversion for adaptation to different workpieces.

Diese Aufgabe wird erfindungsgemäß gelöst durch eine Vorrichtung mit den Merkmalen des Patentanspruchs 1.This object is achieved by a device with the features of claim 1.

Vorteilhafte Ausführung der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.

Die erfindungsgemäße Schleifmaschine ist als Sechs-Achsen-Schleifmaschine ausgebildet. Die rotierend antreibbare Schleifspindel, an welcher das Schleifwerkzeug gespannt wird, und die rotierend antreibbare Werkstückspindel, an welcher das Werkstück, insbesondere eine Schneidplatte oder Wendeschneidplatte spannbar ist, sind in drei linearen Achsen relativ zueinander numerisch gesteuert bewegbar. Die das Werkstück spannende Werkstückspindel ist um ihre Achse gesteuert drehbar, um das Schleifwerkzeug mit den verschiedenen Umfangsbereichen des Werkstückes in Eingriff bringen zu können. Die Werkstückspindel ist weiter um eine ihre Achse schneidende Werkstückspindel-Schwenkachse gesteuert schwenkbar, sodass das Schleifwerkzeug die Profilkontur der Schneidplatte abfahren kann. Zusätzlich zu diesen zwei rotatorischen Achsen ist die Schleifspindel auch noch um eine Schleifspindel-Schwenkachse als dritte rotatorische Achse schwenkbar, wobei diese Schleifspindel-Schwenkachse quer zur Schleifspindelachse verläuft. Durch diese dritte rotatorische Achse ist es möglich, die Schleifspindelachse im Winkel gegenüber der Werkstückspindel zu verschwenken, sodass die Achse der Schleifspindel und damit die Achse des rotierenden Schleifwerkzeuges die Schwenkebene der Werkstückspindel schneidet. Auf diese Weise kann das Schleifwerkzeug mit seiner Rotationsachse auch so in Bezug auf das Werkstück ausgerichtet werden, dass das Schleifwerkzeug an dem Werkstück parallel zu der Achse der Werkstückspindel und damit zur Achse des Werkstücks angreift. Auf diese Weise können auch konkave Umfangslinien und konkave Konturflächen des Werkstückes geschliffen werden, ohne dass das Werkstück umgespannt werden muss.The grinding machine according to the invention is designed as a six-axis grinding machine. The rotationally drivable grinding spindle, on which the grinding tool is clamped, and the workpiece spindle, which can be driven in rotation, on which the workpiece, in particular an insert or indexable insert can be tensioned, are movable numerically controlled in three linear axes relative to one another. The workpiece clamping the workpiece exciting is controlled to rotate about its axis to the grinding tool with the various peripheral areas of To be able to engage workpieces. The workpiece spindle is further controlled pivotable about a workpiece spindle pivot axis intersecting its axis, so that the grinding tool can descend the profile contour of the cutting plate. In addition to these two rotary axes, the grinding spindle is also pivotable about a grinding spindle pivot axis as the third rotary axis, this grinding spindle pivot axis running transversely to the grinding spindle axis. By this third rotary axis, it is possible to pivot the grinding spindle axis at an angle relative to the workpiece spindle, so that the axis of the grinding spindle and thus the axis of the rotating grinding tool intersects the pivot plane of the workpiece spindle. In this way, the grinding tool can also be aligned with its axis of rotation in relation to the workpiece so that the grinding tool engages the workpiece parallel to the axis of the workpiece spindle and thus to the axis of the workpiece. In this way, concave peripheral lines and concave contour surfaces of the workpiece can be ground without the workpiece has to be re-clamped.

Bei der erfindungsgemäßen Schleifmaschine sind die Werkstückspindel und ein diese Werkstückspindel rotierend antreibbarer Servomotor in einer Spannvorrichtung aufgenommen, die als modulare Baueinheit an der Werkstück-Schwenkspindel montierbar ist. Bei montierter Spannvorrichtung schneidet dabei die Werkstückspindelachse die Werkstück-Schwenkachse rechtwinklig. Eine herkömmliche Schleifmaschine mit einer Rotationsachse für das Werkstück kann mittels der Spannvorrichtung in einfacher Weise in eine Schleifmaschine mit einer zusätzlichen Werkstück-Rotationsachse umgerüstet werden. Weiter ermöglicht die modulare Ausgestaltung der Spannvorrichtung ein einfaches Umrüsten der Schleifmaschine zur Anpassung an unterschiedliche Werkstücke, da sämtliche für das Spannen des Werkstückes erforderlichen Elemente in der Spannvorrichtung angeordnet sind.In the grinding machine according to the invention, the workpiece spindle and a servomotor which can be driven in rotation by said workpiece spindle are accommodated in a clamping device which can be mounted on the workpiece pivot spindle as a modular structural unit. When mounted clamping device while the workpiece spindle axis cuts the workpiece pivot axis at right angles. A conventional grinding machine with an axis of rotation for the workpiece can be converted by means of the clamping device in a simple manner in a grinding machine with an additional workpiece rotation axis. Furthermore, the modular design of the clamping device allows easy conversion of the grinding machine to adapt to different Workpieces, since all necessary for the clamping of the workpiece elements are arranged in the clamping device.

Im Folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen

Figur 1
schematisch den Grundaufbau der Schleifmaschine,
Figur 2
in perspektivischer Ansicht die wesentlichen Teile der Schleifmaschine,
Figur 3
eine Figur 2 entsprechende Darstellung in einer anderen Arbeitsposition und
Figur 4
in perspektivischer Ansicht eine Spannvorrichtung.
In the following the invention will be explained in more detail with reference to an embodiment shown in the drawing. Show it
FIG. 1
schematically the basic structure of the grinding machine,
FIG. 2
in perspective view the essential parts of the grinding machine,
FIG. 3
a FIG. 2 corresponding representation in another working position and
FIG. 4
in perspective view a clamping device.

In Figur 1 ist schematisch der Grundaufbau einer Schleifmaschine gezeigt. Die Schleifmaschine weist ein Maschinenbett 10 mit einer vertikalen Rückwand 12 auf. Auf dem Maschinenbett 10 ist ein Tisch 14 angeordnet, der in einer horizontalen Y-Achse senkrecht zur vorderen Bedienerseite und zur Rückwand 12 numerisch gesteuert linear verfahrbar ist. An der Rückwand 12 ist ein Kreuzschlitten angeordnet, der in einer zur Y-Achse senkrechten horizontalen linearen X-Achse und in einer zu der X-Achse und der Y-Achse senkrechten vertikalen linearen Z-Achse numerisch gesteuert verfahrbar ist. Unten an dem Schlitten 16 ist eine Schleifspindeleinheit 18 angeordnet, die um eine zur Z-Achse parallele C-Achse drehbar in dem Schlitten 16 gelagert ist und um diese C-Achse numerisch gesteuert angetrieben schwenkbar ist. In der Schleifspindeleinheit 18 ist horizontal eine Schleifspindel gelagert, die durch einen Spindelmotor 20 angetrieben wird und an ihrem freien Ende ein Schleifwerkzeug 22 trägt, das in der Zeichnung als topfförmige Schleifscheibe dargestellt ist, aber auch als ebene Schleifscheibe ausgebildet sein kann. Auf dem Tisch 14 ist eine Werkstück-Schwenkspindeleinheit 24 angeordnet, die eine Werkstück-Schwenkspindel 26 aufnimmt. Die Werkstück-Schwenkspindel 26 ist mittels eines Motors 28 numerisch gesteuert um ihre zur X-Achse parallele A-Achse drehbar.In FIG. 1 is shown schematically the basic structure of a grinding machine. The grinding machine has a machine bed 10 with a vertical rear wall 12. On the machine bed 10, a table 14 is arranged, which is in a horizontal Y-axis perpendicular to the front operator side and the rear wall 12 numerically controlled linearly movable. On the rear wall 12, a cross slide is arranged, which is numerically controlled in a direction perpendicular to the Y-axis horizontal linear X-axis and in a direction perpendicular to the X-axis and the Y-axis vertical linear Z-axis. Down on the carriage 16, a grinding spindle unit 18 is arranged, which is mounted for rotation about a Z axis parallel to the C-axis rotatably mounted in the carriage 16 and driven by this C-axis numerically controlled is pivotable. In the grinding spindle unit 18, a grinding spindle is horizontally mounted, which is driven by a spindle motor 20 and at its free end a grinding tool 22 carries, which is shown in the drawing as a cup-shaped grinding wheel, but may also be designed as a flat grinding wheel. On the table 14, a workpiece pivot spindle unit 24 is arranged, which receives a workpiece pivot spindle 26. The workpiece swing spindle 26 is rotatable by means of a motor 28 numerically controlled about its axis parallel to the X axis A-axis.

Wie in den Figuren 2 und 3 zu sehen ist, ist an der Werkstück-Schwenkspindel 26 eine Spannvorrichtung montiert, wie sie in Figur 4 gezeigt ist. Die Spannvorrichtung ist eine selbständige Baueinheit, die modular an der A-Achse angebaut werden kann.As in the Figures 2 and 3 can be seen, a clamping device is mounted on the workpiece pivot spindle 26, as in FIG. 4 is shown. The clamping device is a self-contained unit that can be modularly mounted on the A-axis.

Die Spannvorrichtung weist einen Grundkörper 30 auf. An dem Grundkörper 30 sind Kupplungsmittel angebracht, mit welchen der Grundkörper 30 fest mit der Werkstück-Schwenkspindel 26 verbunden werden kann. Die Kupplungsmittel bestehen im dargestellten Ausführungsbeispiel aus einem Schaftkegel 32, der in den Aufnahmeflansch der Werkstück-Schwenkspindel 26 eingesetzt und mit diesem verschraubt wird. Der Grundkörper 30 ist somit über die Werkstück-Schwenkspindel 26 gesteuert um die A-Achse schwenkbar.The tensioning device has a main body 30. On the main body 30 coupling means are mounted, with which the base body 30 can be fixedly connected to the workpiece pivot spindle 26. The coupling means consist in the illustrated embodiment of a shaft taper 32 which is inserted into the receiving flange of the workpiece pivot spindle 26 and screwed thereto. The main body 30 is thus controlled via the workpiece pivot spindle 26 pivotable about the A-axis.

In dem Grundkörper 30 ist eine Werkstückspindel gelagert. Hierzu ist in dem Grundkörper 30 ein Servomotor 34 fest aufgenommen. An einem Flansch 36 der Motorwelle des Servomotors 34 ist ein Gegenstößel 38 montiert, der koaxial mit der Motorwelle des Servomotors 34 fluchtet. Der Gegenstößel 38 kann mittels des Servomotors 34 numerisch gesteuert um seine Mittelachse, die als Werkstück-Spindelachse bezeichnet wird, gedreht werden. Der Servomotor 34 und der Gegenstößel 38 sind in dem Grundkörper 30 so angeordnet, dass die Achse des Gegenstößels 38, d.h. die Werkstückspindelachse die Mittelachse des Schaftkegels 32 und damit die A-Achse orthogonal schneidet. Dementsprechend kann die Werkstückspindelachse auch als B-Achse bezeichnet werden, wie dies in Figur 2 angedeutet ist.In the main body 30, a workpiece spindle is mounted. For this purpose, a servo motor 34 is firmly received in the main body 30. On a flange 36 of the motor shaft of the servo motor 34, a counter-ram 38 is mounted, which is coaxially aligned with the motor shaft of the servomotor 34. The counter-ram 38 can be numerically controlled by means of the servomotor 34 about its central axis, which is referred to as workpiece spindle axis, are rotated. The servomotor 34 and the counter-ram 38 are arranged in the base body 30 so that the axis of the counter-ram 38, ie the workpiece spindle axis orthogonally intersects the central axis of the shaft cone 32 and thus the A-axis. Accordingly, the workpiece spindle axis may also be referred to as a B axis, as shown in FIG FIG. 2 is indicated.

Unterhalb der Werkstückspindelachse und von dieser beabstandet ist in dem Grundkörper 30 ein Führungsblock 40 gelagert. Der Führungsblock 40 ist in einer zur Werkstückspindelachse parallelen Richtung linear verschiebbar in dem Grundkörper 30 geführt. Hierzu weist der Grundkörper 30 beispielsweise eine Aussparung auf, in welcher der Führungsblock 40 angeordnet ist und auf Führungen 42 gleitet, die parallel zur Werkstückspindelachse verlaufen und in dem Grundkörper 30 angebracht sind. Die Führungen 42 sind in dem dargestellten Ausführungsbeispiel als Führungsstangen ausgebildet. Der Führungsblock 40 kann sich auf den Führungen 42 frei bewegen mit einem Hub von beispielsweise etwa 10 Millimetern.Below the workpiece spindle axis and spaced therefrom, a guide block 40 is mounted in the base body 30. The guide block 40 is guided linearly displaceably in the main body 30 in a direction parallel to the workpiece spindle axis. For this purpose, the base body 30, for example, a recess in which the guide block 40 is arranged and slides on guides 42 which are parallel to the workpiece spindle axis and mounted in the base body 30. The guides 42 are formed in the illustrated embodiment as guide rods. The guide block 40 can move freely on the guides 42 with a stroke of, for example, about 10 millimeters.

Auf dem Führungsblock 40 ist eine Führungsbuchse 44 befestigt. Die Führungsbuchse 44 ist axial fluchtend mit der Mittelachse des Gegenstößels 38 ausgerichtet. In der Führungsbuchse 44 ist ein Spannstößel 46 spielfrei sowohl axial als auch rotatorisch frei beweglich geführt. Der Spannstößel 46 ist an seinem dem Gegenstößel 38 zugewandten Ende vorzugsweise konisch ausgebildet. Ein Werkstück, insbesondere eine Wendeschneidplatte 48, kann zwischen dem Gegenstößel 38 und dem Spannstößel 46 gespannt werden, indem die Wendeschneidplatte 48 mittig zur Werkstückspindelachse angeordnet wird und der Spannstößel 46 gegen den Gegenstößel 38 kraftbeaufschlagt bewegt wird. Der Spannstößel 46 kann dabei in eine Spannmulde oder Spannbohrung der Wendeschneidplatte 48 eindringen, um diese zentriert an dem Gegenstößel 38 zu spannen.On the guide block 40, a guide bush 44 is attached. The guide bush 44 is aligned axially aligned with the central axis of the counter-ram 38. In the guide bushing 44, a clamping ram 46 is guided free of play both axially and rotationally freely movable. The clamping ram 46 is preferably formed conically at its end facing the counter-ram 38 end. A workpiece, in particular an indexable insert 48, can be clamped between the counter-ram 38 and the clamping ram 46 by arranging the indexable insert 48 centered on the workpiece spindle axis and the clamping ram 46 is moved by force against the counter-ram 38. The clamping ram 46 can penetrate into a clamping recess or clamping bore of the indexable insert 48 in order to clamp it centered on the counter-ram 38.

Die Wendeschneidplatte 48 kann beispielsweise durch einen Handling-Greifer 68 erfasst werden, der mittels des Kreuzschlittens 16 verfahren wird. Der Handling-Greifer 68 legt die geschliffene Wendeschneidplatte 48 beispielsweise in einer Kassette 70 ab, entnimmt der Kassette 70 eine unbeschliffene Wendeschneidplatte 48 und bringt diese in die Spannstellung zwischen dem Gegenstößel 38 und dem Spannstößel 46.The indexable insert 48 can be detected, for example, by a handling gripper 68, which is moved by means of the cross slide 16. The handling gripper 68 places the ground indexable insert 48, for example in a cassette 70, removes the cassette 70 from an unpolished indexable insert 48 and brings it into the clamping position between the counter-ram 38 and the clamping ram 46.

Das Werkstück, nämlich die Wendeschneidplatte 48, wird mittels der Schleifscheibe 22 geschliffen. Mittels des Kreuzschlittens 16 wird die Schleifscheibe 22 in der X-Achse und der Z-Achse zugestellt, während eine Zustellbewegung in der Y-Achse über den Tisch 14 erfolgen kann. Zum Umfangschleifen der Wendeschneidplatte 48 wird die Spannvorrichtung um die A-Achse so geschwenkt, dass die durch den Gegenstößel 38 und den Spannstößel 46 definierte Werkstückspindelachse horizontal, d.h. parallel zur Y-Achse steht. Der Umfang kann nun geschliffen werden, indem der Gegenstößel 38 mittels des Servomotors 34 um die Werkstückspindelachse gedreht wird. Dabei wird das Werkstück, die Wendeschneidplatte 48 reibschlüssig mitgedreht und auch der Spannstößel 46 dreht sich frei in der Führungsbuchse 44. Anschließend kann die Schneidenkontur der Wendeschneidplatte 48 in derselben Spannung geschliffen werden, wozu die Spannvorrichtung mittels des Motors 28 um die A-Achse geschwenkt wird. Dadurch wird der Anstellwinkel der Werkstückspindelachse gegen die Achse der Schleifscheibe 22 geschwenkt, um beispielsweise Fasen der Schneidkante, Freiwinkelflächen am Umfang und eventuelle Mulden in den Plattenebenen herzustellen.The workpiece, namely the indexable insert 48, is ground by means of the grinding wheel 22. By means of the cross slide 16, the grinding wheel 22 is delivered in the X-axis and the Z-axis, while a feed movement in the Y-axis via the table 14 can take place. For circumferential grinding of the indexable insert 48, the clamping device is pivoted about the A-axis such that the workpiece spindle axis defined by the counter-ram 38 and the clamping ram 46 is horizontal, i. parallel to the Y-axis. The circumference can now be ground by the counter-ram 38 is rotated by means of the servo motor 34 about the workpiece spindle axis. In this case, the workpiece, the indexable insert 48 is frictionally rotated and also the clamping rod 46 rotates freely in the guide bushing 44. Subsequently, the cutting contour of the insert 48 can be ground in the same voltage, for which purpose the clamping device is pivoted about the A-axis by means of the motor 28 , As a result, the angle of attack of the workpiece spindle axis is pivoted against the axis of the grinding wheel 22 to produce, for example, chamfers of the cutting edge, clearance angle surfaces on the circumference and any troughs in the plate planes.

Da die Schleifspindel mit dem Schleifwerkzeug 23 um die C-Achse geschwenkt werden kann, kann auch der Winkel verstellt werden, den die Schleifspindelachse mit der Ebene einschließt, in welcher die Werkstückspindelachse verschwenkt wird, wenn die Spannvorrichtung um die A-Achse gedreht wird. Es können topfförmige Schleifscheiben 22 verwendet werden, die mit Schleifbelägen am Außenumfang und/oder am Innenumfang und/oder an dem stirnseitigen Rand ausgebildet sind. Ebenso können Planschleifscheiben eingesetzt werden, die Schleifbeläge am Außenumfang und/oder an den seitlichen Randflächen aufweisen. Diese Schleifwerkzeuge können an dem Werkstück, insbesondere einer Wendeschneidplatte so angreifen, dass die Schleifbewegung in Umfangsrichtung der Wendeschneidplatte läuft. Hierzu wird die Schleifspindel um die C-Achse so geschwenkt, dass sie in der Schwenkebene der Werkstück-Spindelachse liegt, d. h. in der Y-Z-Ebene. Dies entspricht der Bearbeitung bei herkömmlichen Vier-Achsen-Schleifmaschinen. Es können konvexe und gerade Umfangslinien und Konturflächen geschliffen werden. Die Schleifspindel kann auch um die C-Achse in eine Stellung geschwenkt werden, in der sie senkrecht zur Schwenkebene der Werkstück-Spindelachse steht, d. h. parallel zur X-Achse, wie dies in Figur 2 gezeigt ist. Die Schleifbewegung läuft dabei senkrecht zur Wendeschneidplatte und deren Umfangsrichtung. Damit können auch konkave Umfangslinien und Konturflächen geschliffen werden. Die Positionierung des Schleifwerkzeugs in Bezug auf den Umfang der Wendeschneidplatte erfolgt durch die gesteuerte X-Achse, während der Vorschub in der Kontur durch die gesteuerte Y-Achse erfolgt. Sämtliche Schleifbearbeitungen können dabei in derselben Aufspannung des Werkstückes durchgeführt werden.Since the grinding spindle can be pivoted with the grinding tool 23 about the C-axis, also the angle can be adjusted, which includes the grinding spindle axis with the plane, in which the workpiece spindle axis is pivoted when the clamping device is rotated about the A-axis. It can be used cup-shaped grinding wheels 22 which are formed with abrasive coatings on the outer circumference and / or on the inner circumference and / or on the front edge. Likewise, flat grinding wheels can be used which have abrasive linings on the outer circumference and / or on the lateral edge surfaces. These grinding tools can engage the workpiece, in particular an indexable insert, such that the grinding movement runs in the circumferential direction of the indexable insert. For this purpose, the grinding spindle is pivoted about the C-axis so that it lies in the pivot plane of the workpiece spindle axis, ie in the YZ plane. This corresponds to machining in conventional four-axis grinding machines. It can be ground convex and straight lines and contour surfaces. The grinding spindle can also be pivoted about the C axis to a position in which it is perpendicular to the pivot plane of the workpiece spindle axis, ie parallel to the X axis, as in FIG. 2 is shown. The grinding movement runs perpendicular to the indexable insert and its circumferential direction. This also allows concave peripheral lines and contour surfaces to be ground. The positioning of the grinding tool relative to the circumference of the indexable insert is effected by the controlled X-axis, while the feed in the contour is effected by the controlled Y-axis. All grinding operations can be carried out in the same clamping of the workpiece.

Wie aus den Zeichnungen ersichtlich ist, ist der Gegenstößel 38 so geformt, dass sich sein Durchmesser von dem an dem Wellenflansch des Servomotors 34 angeflanschten Ende konisch gegen das am Werkstück 48 anliegende Ende verringert. Dadurch weisen die Stößel 38 und 46 beiderseits der gespannten Wendeschneidplatte 48 einen kleinen Durchmesser auf, so dass ausreichender Freiraum vorhanden ist, um mit der Schleifscheibe 22 beidseitig an der Wendeschneidplatte 48 angreifen zu können.As can be seen from the drawings, the counter-ram 38 is shaped so that its diameter decreases conically from the end flanged to the shaft flange of the servomotor 34 against the end abutting the workpiece 48. As a result, the plungers 38 and 46 on either side of the tensioned indexable insert 48 a small diameter, so that sufficient space is available to attack with the grinding wheel 22 on both sides of the insert 48 can.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Maschinenbettmachine bed
1212
Rückwandrear wall
1414
Tischtable
1616
Schlittencarriage
1818
SchleifspindeleinheitGrinding Spindles
2020
Spindelmotorspindle motor
2222
Schleifwerkzeuggrinding tool
2424
WerkstückspindeleinheitWorkpiece spindle unit
2626
Werkstücks-SchwenkspindelWorkpiece-spindle pivot
2828
Motorengine
3030
Grundkörperbody
3232
Schaftkegeltaper shank
3434
Servomotorservomotor
3636
Flanschflange
3838
Gegenstößelagainst ram
4040
Führungsblockguide block
4242
Führungenguides
4444
Führungsbuchseguide bush
4646
Spannstößelclamping rams
4848
WendeschneidplatteIndexable insert
6868
Handling-GreiferHandling grippers
7070
Kassettecassette

Claims (5)

Schleifmaschine zum Umfangs- und Konturschleifen von Werkstücken, insbesondere Schneidplatten und Wendeschneidplatten, mit einer rotierend antreibbaren Schleifspindel, an welcher ein Schleifwerkzeug (22) spannbar ist, mit einer rotierend antreibbaren Werkstückspindel (38, 46), an welcher ein Werkstück (48) spannbar ist, wobei die Schleifspindel und die Werkstückspindel (38, 46) in drei zueinander senkrechten linearen Achsen (X-, Y-, Z-Achse) gesteuert gegeneinander bewegbar sind, wobei die Schleifspindel um eine quer zur Schleifspindelachse verlaufende Schleifspindel- Schwenkachse (C-Achse), die zu einer der linearen Achsen (Z-Achse) parallel verläuft, schwenkbar ist und wobei die Werkstückspindel (38, 46) um eine die Werkstückspindelachse (B-Achse) rechtwinklig schneidende Werkstückspindel-Schwenkachse (A-Achse), die zu einer anderen der linearen Achsen (X-Achse) parallel verläuft, gesteuert schwenkbar ist,
dadurch gekennzeichnet, das die Werkstückspindel (38, 46) und ein Servomotor (34) für ihren rotierenden Antrieb in einer Spannvorrichtung aufgenommen sind, dass die Spannvorrichtung als modulare Baueinheit mit Kupplungsmittel fest an der Werkstück-Schwenkspindel (26) montierbar ist und dass bei montierter Spannvorrichtung die Werkstückspindelachse (B-Achse) die Werkstückspindel-Schwenkachse (A-Achse) rechtwinklig schneidet.Grinding machine for circumferential and contour grinding of workpieces, in particular inserts and indexable inserts, with a rotatably drivable grinding spindle, on which a grinding tool (22) can be tensioned, with a rotatably driven workpiece spindle (38, 46) on which a workpiece (48) can be tensioned , wherein the grinding spindle and the workpiece spindle (38, 46) are controlled in three mutually perpendicular linear axes (X, Y, Z axis) are mutually movable, wherein the grinding spindle about a transverse to Schleifspindelachse Schleifspindel- pivot axis (C-axis ), which is parallel to one of the linear axes (Z-axis), pivotable and wherein the workpiece spindle (38, 46) about a workpiece spindle axis (B-axis) perpendicularly intersecting workpiece spindle pivot axis (A-axis) leading to a other of the linear axes (X-axis) runs parallel, controlled pivoting,
characterized in that the workpiece spindle (38, 46) and a servomotor (34) are accommodated for their rotating drive in a clamping device, that the clamping device as a modular unit with coupling means fixed to the workpiece pivot spindle (26) can be mounted and that when mounted Clamping device cuts the workpiece spindle axis (B axis) the workpiece spindle pivot axis (A axis) at right angles. Schleifmaschine nach Anspruch 1,
dadurch gekennzeichnet, dass die Schleifspindel um die Schleifspindel-Schwenkachse (C-Achse) schwenkbar in einem Schlitten (16) gelagert ist, der in zwei zueinander senkrechten linearen Achsen (X-und Z-Achse) verfahrbar ist, und dass die Werkstückspindel (38, 46) in der dritten linearen Achse (Y-Achse) verfahrbar ist.Grinding machine according to claim 1,
characterized in that the grinding spindle about the grinding spindle pivot axis (C-axis) is pivotally mounted in a carriage (16) in two mutually perpendicular linear axes (X and Z axis) is movable, and that the workpiece spindle (38, 46) in the third linear axis (Y-axis) is movable. Schleifmaschine nach Anspruch 2,
dadurch gekennzeichnet, dass die Werkstückspindel (38, 46) auf einem Tisch (14) angeordnet ist, der horizontal (Y-Achse) auf einem Maschinenbett (10) der Schleifmaschine bewegbar ist und dass der Schlitten (16) an einer vertikalen Rückwand (12) des Maschinenbettes (10) in den zwei linearen Achsen (X- und Z-Achse) bewegbar ist.Grinding machine according to claim 2,
characterized in that the workpiece spindle (38, 46) is arranged on a table (14) which is movable horizontally (Y-axis) on a machine bed (10) of the grinding machine and in that the carriage (16) is mounted on a vertical rear wall (12 ) of the machine bed (10) in the two linear axes (X and Z axis) is movable. Schleifmaschine nach Anspruch 3,
dadurch gekennzeichnet, dass die Schleifspindel hängend unten an dem Schlitten (16) angeordnet ist.Grinding machine according to claim 3,
characterized in that the grinding spindle is arranged hanging down on the carriage (16). Schleifmaschine nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Werkstückspindel zwei kraftbeaufschlagte axial gegeneinander gerichtete Stößel (38, 46) aufweist, zwischen denen das Werkzeug gespannt wird.Grinding machine according to one of the preceding claims,
characterized in that the workpiece spindle has two kraftbeaufschlagte axially against each other directed plunger (38, 46), between which the tool is tensioned.
EP09011250A 2008-09-08 2009-09-02 Grinding machine Active EP2161099B1 (en)

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EP2161099A3 EP2161099A3 (en) 2010-07-14
EP2161099B1 EP2161099B1 (en) 2011-04-13

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EP09011250A Active EP2161099B1 (en) 2008-09-08 2009-09-02 Grinding machine

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AT (1) ATE505297T1 (en)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104741991A (en) * 2015-04-07 2015-07-01 台州瑞进机械有限公司 Copy grinding machine and machining method for machining shifting baffle block top working surface
TWI598185B (en) * 2013-10-28 2017-09-11 永豐機械有限公司 Clamping device for engine parts grinder and its three-point clamping structure and swing controlling structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104759949B (en) * 2015-04-07 2017-03-01 台州瑞进机械有限公司 The method for fine finishing of gearshift of vehicle transmission block

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828168A1 (en) 1977-06-28 1979-01-11 Huffman S E Corp NUMERICALLY CONTROLLED GRINDING MACHINE
DE4301214A1 (en) 1992-02-10 1993-08-12 Agathon Ag Maschf Grinding machine for grinding reversible cutting inserts - has grinding wheel with two concentric abrasive surfaces offset from each other in axial direction
DE4240063A1 (en) 1992-11-28 1994-06-01 Rheinische Braunkohlenw Ag Thermal treatment of powdered carbon-contg. substance e.g. coke suspension biological purificn., etc. - by combustion in a rotary pipe over the absence of oxygen@ to give a material suitable for the purificn. of effluent
DE102006035845A1 (en) 2006-08-01 2008-02-07 Erwin Junker Maschinenfabrik Gmbh Method of grinding an indexable insert and grinding wheel for carrying out the grinding process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828168A1 (en) 1977-06-28 1979-01-11 Huffman S E Corp NUMERICALLY CONTROLLED GRINDING MACHINE
DE4301214A1 (en) 1992-02-10 1993-08-12 Agathon Ag Maschf Grinding machine for grinding reversible cutting inserts - has grinding wheel with two concentric abrasive surfaces offset from each other in axial direction
DE4240063A1 (en) 1992-11-28 1994-06-01 Rheinische Braunkohlenw Ag Thermal treatment of powdered carbon-contg. substance e.g. coke suspension biological purificn., etc. - by combustion in a rotary pipe over the absence of oxygen@ to give a material suitable for the purificn. of effluent
DE102006035845A1 (en) 2006-08-01 2008-02-07 Erwin Junker Maschinenfabrik Gmbh Method of grinding an indexable insert and grinding wheel for carrying out the grinding process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI598185B (en) * 2013-10-28 2017-09-11 永豐機械有限公司 Clamping device for engine parts grinder and its three-point clamping structure and swing controlling structure
CN104741991A (en) * 2015-04-07 2015-07-01 台州瑞进机械有限公司 Copy grinding machine and machining method for machining shifting baffle block top working surface

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EP2161099B1 (en) 2011-04-13
EP2161099A3 (en) 2010-07-14
ATE505297T1 (en) 2011-04-15
DE102008046086A1 (en) 2010-03-11
ES2361654T3 (en) 2011-06-21
DE102008046086B4 (en) 2015-05-07
DE502009000532D1 (en) 2011-05-26

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