EP4058237A1 - Circular grinding machine with dressing unit - Google Patents

Circular grinding machine with dressing unit

Info

Publication number
EP4058237A1
EP4058237A1 EP21810538.5A EP21810538A EP4058237A1 EP 4058237 A1 EP4058237 A1 EP 4058237A1 EP 21810538 A EP21810538 A EP 21810538A EP 4058237 A1 EP4058237 A1 EP 4058237A1
Authority
EP
European Patent Office
Prior art keywords
axis
rotation
workpiece
grinding wheel
grinding machine
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.)
Granted
Application number
EP21810538.5A
Other languages
German (de)
French (fr)
Other versions
EP4058237B1 (en
Inventor
Frank ZIERSCH
Jean-Claude Montandon
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.)
Ziersch GmbH
Original Assignee
Ziersch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ziersch GmbH filed Critical Ziersch GmbH
Publication of EP4058237A1 publication Critical patent/EP4058237A1/en
Application granted granted Critical
Publication of EP4058237B1 publication Critical patent/EP4058237B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • 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 present invention relates to a cylindrical grinding machine for grinding a preferably rotatable workpiece.
  • the cylindrical grinding machine is used in particular for grinding a cylindrical workpiece, for example, clamped between centers or on one side with the aid of a rotating grinding wheel.
  • the cylindrical grinding machine also includes a dressing unit for dressing the grinding wheel.
  • DE 31 36 396 A1 shows a portal grinding machine with one or more stands and a traverse attached to the stand at the top.
  • An infeed carriage is movably mounted on the traverse and carries a tool drive head for driving a machining tool.
  • a workpiece set-up bench has two spaced workpiece holders between which the workpiece to be machined is kept free and is driven in rotation about its longitudinal axis.
  • the infeed carriage can be moved transversely to the longitudinal axis of the workpiece. When machining the workpiece, the machining tool is arranged above the longitudinal axis of the workpiece.
  • the infeed carriage can also be moved parallel to the longitudinal axis of the workpiece.
  • the two spaced workpiece holders are formed by a workpiece headstock fixed on a working platform and by a tailstock that can be fixed on the working platform.
  • the DD 7177 shows a device for the fine dressing of a grinding wheel.
  • a positively guided dressing wheel that runs along and is set at an angle to the axis of rotation of the grinding wheel is moved parallel to the axis of rotation of the grinding wheel.
  • the axis of rotation of the dressing wheel set at an angle lies in a common plane with the axis of rotation of the grinding wheel.
  • EP 3 351 344 A1 describes a cylindrical grinding machine in which a grinding wheel is guided vertically upwards while the workpiece to be machined is positioned below the grinding wheel.
  • a rotation axis of the workpiece lies on a vertical plane on which a rotation axis of the grinding wheel is moved in the vertical direction.
  • the axis of rotation of the workpiece can be adjusted in this vertical plane as well as transversely or at right angles to it in the thousandths of a millimeter range.
  • a disadvantage of this cylindrical grinding machine is that, despite the arrangement of the grinding wheel over the workpiece, unwanted tilting can occur between the grinding wheel and the workpiece, so that the machining accuracy that can be achieved is limited.
  • a workpiece holder is known from US Pat. No. 2,842,905, with which workpieces are to be held in a position to be machined in a grinding machine.
  • the holder is designed in particular for rod-shaped workpieces.
  • a grinding/polishing machine which comprises a machine body with a support base and a platform mounted on the support base for holding a workpiece.
  • a post extends from the support base in a Z-axis direction.
  • the grinding/polishing machine also includes a first grinding unit having a first grinding wheel and slidably mounted on the stand, and a second grinding unit having a second grinding wheel mounted to the first grinding unit for simultaneous movement with the first grinding unit and is displaceable relative to the first grinding unit in order to move the second grinding wheel in a Y-axis direction.
  • DE 1 118 646 discloses an attachment for circular and conical grinding of circular workpieces that can be placed on a clamping table of a surface grinding machine Drive plate are arranged.
  • the base plate can be tilted to both sides.
  • the grinding machine comprises a machine bed, two vertical columns arranged laterally on the machine bed and a bridge that can be moved on the vertical columns in a horizontal, linear Y-axis, in the manner of a portal structure.
  • the grinding machine also includes an X slide that can be moved on the bridge in a horizontal linear X axis and a Z slide that can be moved on the X slide in a vertical linear Z axis, as well as a grinding spindle mounted on the Z slide .
  • a machine table arranged on the machine bed carries a workpiece clamping device.
  • the tool magazine is designed as a magazine wheel and has tool holders on its circumference for interchangeably receiving grinding wheels.
  • the tool magazine is arranged on the machine table so that it can rotate about an axis parallel to the Z-axis.
  • the object of the present invention is to increase the machining accuracy of a circular grinding machine while keeping the structural design simple. At the same time, a high level of dressing accuracy should be realizable. Those should be preferred The dimensions of the machine can be designed in such a way that it only requires a small amount of space in a workshop.
  • the rotary grinding machine according to the invention is used for grinding a workpiece.
  • the workpiece preferably consists of metal, for example steel.
  • Rotationally symmetrical as well as non-rotationally symmetrical workpieces can be machined with the cylindrical grinding machine.
  • high demands can be met with regard to the surface to be achieved, accuracy, dimensional accuracy and freedom from twists.
  • the circular grinding machine includes a machine bed, which is preferably attached to a main stand of the circular grinding machine, so that the machine bed rests firmly on a floor on which the main stand stands.
  • the main stand forms a support for all other components of the cylindrical grinding machine.
  • the machine bed is preferably aligned horizontally and is preferably connected to the main column without moving bearing units.
  • the machine bed carries a swivel table, on which a work headstock for the rotary drive of the work piece is arranged in a fixed mountable manner.
  • the work headstock and also the swivel table are not designed to be shifted while the work piece is being ground.
  • the workhead is not designed to be displaced axially in the direction of an axis of the workhead during grinding of the workpiece.
  • the workhead is preferably fixed on the swivel table assembled .
  • the work headstock which can be mounted firmly on the machine bed, and the tailstock, which can be fixed on the machine bed, can be used during grinding or grinding. dressing process firmly connected to the machine bed.
  • a tailstock On the swivel table or a tailstock is also arranged in a fixed manner on a lifting carriage fastened to this.
  • the tailstock is used to hold the workpiece at an axial end of the workpiece opposite the workpiece headstock.
  • the lifting slide can move the tailstock axially when the workpiece is clamped or should be stretched out.
  • a first axis of rotation about which the workpiece can be rotated is defined by the workhead and the tailstock.
  • the tailstock can preferably be moved and fixed on the swivel table in order to be able to adapt it to workpieces of different lengths.
  • the swivel table can be swiveled relative to the machine bed about a swivel axis aligned in a horizontal direction transverse to the first axis of rotation. This means that the workpiece clamped in the workpiece headstock can also be swiveled relative to the machine bed.
  • the first axis of rotation can therefore also be pivoted within a vertical plane.
  • the pivoting movement can preferably be fixed, so that the pivoting table cannot be pivoted, in particular while the workpiece is being ground. If the pivoting movement is fixed, the pivoting table is preferably firmly connected to the machine bed.
  • the pivoting table can preferably be pivoted with respect to a hori zontal, so that the pivoting table is aligned horizontally in an initial position.
  • the cylindrical grinding machine also includes a grinding wheel that can be rotated about a second axis of rotation for grinding the workpiece.
  • the first axis of rotation and the second axis of rotation are arranged together in a vertical plane.
  • the second axis of rotation is positioned above the first axis of rotation such that the grinding wheel is positioned above the workpiece.
  • the workpiece is thus machined from above by the grinding wheel.
  • the second axis of rotation is arranged above the first axis of rotation with respect to the vertical direction.
  • the grinding wheel is preferably seated on a shaft, which is in particular a grinding spindle.
  • This grinding spindle is preferably mounted in at least one, preferably in several, rotary bearings, so that it can rotate, whereby the grinding wheel also rotates and the workpiece can be ground with the grinding wheel.
  • the second axis of rotation is preferably aligned horizontally, in particular fixed horizontally.
  • the cylindrical grinding machine also includes a longitudinal guide for displacing the rotatable grinding wheel axially in the direction of the second axis of rotation, ie for displacing in the direction defined by the second axis of rotation.
  • a tower which carries the grinding wheel spindle and the grinding wheel, is shifted axially.
  • the longitudinal guide is also arranged in the vertical plane comprising the first axis of rotation and the second axis of rotation.
  • the longitudinal guide has in particular a central guide axis which is preferably arranged in the vertical plane comprising the first axis of rotation and the second axis of rotation.
  • the longitudinal guide is designed in particular to move the grinding wheel indirectly along the second axis of rotation.
  • the longitudinal guide is preferably designed to support the grinding wheel spindle or spindle carrying the grinding wheel. to move the at least one bearing supporting the grinding wheel spindle in the direction of the second axis of rotation, as a result of which the grinding wheel is moved indirectly in the direction of the second axis of rotation, d. H . is shifted on the second axis of rotation.
  • the shaft is preferably a grinding spindle with an electric grinding wheel motor.
  • the at least one bearing is accordingly a spindle bearing.
  • the longitudinal guide then serves for direct or indirect axial displacement of the grinding wheel motor in the direction of the second axis of rotation, as a result of which the grinding wheel is also displaced indirectly in the direction of the second axis of rotation.
  • the cylindrical grinding machine also includes a dressing unit for dressing the grinding wheel.
  • the dressing unit is arranged in the axial direction next to the tailstock on the machine bed in relation to the first axis of rotation.
  • the dressing unit is therefore preferably also arranged in the first axis of rotation, specifically next to the tailstock on the machine bed.
  • the dressing unit is preferably mounted on the machine bed so that it can be displaced in a horizontal direction transversely to the first axis of rotation, so that it can be moved in this direction to the grinding wheel; for example, to guide a dressing tool sitting on the dressing unit to the grinding wheel or to be able to choose from different dressing tools sitting on the dressing unit.
  • the dressing unit, the workhead and the Tailstock are arranged together on the machine bed.
  • the dressing unit arranged on the machine bed is preferably firmly connected to the machine bed, so that the dressing unit is also firmly connected to the work headstock, the tailstock and the main stand via the machine bed during a dressing process. This prevents unwanted displacements of the dressing unit during dressing, which leads to high accuracy when dressing the grinding wheel.
  • a particular advantage of the circular grinding machine is that the joint arrangement of the two rotary axes and the longitudinal guide in a single vertical plane allows for high machining accuracy and a compact design of the circular grinding machine.
  • the workpiece sitting on the workhead does not have to be moved in the direction of the second axis of rotation, since the grinding wheel can be moved lengthwise with the help of the longitudinal guide.
  • the workpiece is thus firmly seated on the machine bed, which enables increased machining accuracy.
  • the cylindrical grinding machine also includes a grinding wheel motor.
  • the grinding wheel motor has a motor shaft coupled to the grinding wheel spindle on which the grinding wheel is fixedly mounted.
  • the motor shaft is in the second axis of rotation.
  • the at least one rotary bearing for mounting the grinding wheel is formed, for example, in the grinding wheel motor.
  • the longitudinal guide carries the grinding wheel motor together with the grinding wheel.
  • the longitudinal guide preferably supports the grinding wheel motor indirectly.
  • the longitudinal guide preferably comprises two parallel guide rails which are arranged in a horizontal plane.
  • the central guide axis runs in the middle between these two guide rails and is preferably arranged in the vertical plane comprising the first axis of rotation and the second axis of rotation.
  • the guide rails are preferably located on the main stand of the cylindrical grinding machine.
  • the longitudinal guide preferably includes a first actuator, by which the longitudinal guide can be driven.
  • the grinding wheel can thus be displaced in the direction of the second axis of rotation by the drive of the first actuator.
  • the longitudinal guide allows the rotatable grinding wheel to be displaced by preferably at least 400 mm and more preferably at least 700 mm.
  • the cylindrical grinding machine also includes a vertical guide for guiding the grinding wheel vertically.
  • the grinding wheel can be guided up and down in the vertical direction by the vertical guide.
  • the grinding wheel can therefore be guided to the workpiece from above with the vertical guide in order to grind the workpiece.
  • the grinding wheel is guided in the radial direction to the workpiece by the vertical guide.
  • the vertical guide preferably carries the grinding wheel motor together with the grinding wheel.
  • the Longitudinal guide preferably carries the vertical guide and thus indirectly also the grinding wheel motor.
  • the vertical guide preferably includes a second actuator, by which the vertical guide can be driven.
  • the grinding wheel can be shifted up and down in the vertical direction by driving the second actuator.
  • the vertical guide allows the rotatable grinding wheel to be displaced by preferably at least 200 mm.
  • the cylindrical grinding machine also includes a tower which is supported by the longitudinal guide.
  • the tower carries the vertical guide, with the vertical guide preferably being arranged in or on the tower.
  • the vertical guide carries the grinding wheel; in particular the grinding wheel motor with the coupled grinding wheel spindle and the grinding wheel sitting on it.
  • the tower is arranged next to the grinding wheel in the axial direction in relation to the second axis of rotation.
  • the tower is preferably arranged next to the dressing unit in the axial direction relative to the first axis of rotation, with the dressing unit being located between the tower and the tailstock.
  • the tower is preferably carried by the two guide rails on the main stand and is guided in these guide rails, which form the longitudinal guide.
  • the tower is preferably displaced along the longitudinal guide in order to displace the grinding wheel.
  • the turret preferably has a central axis which is vertically oriented and axially adjacent to the grinding wheel relative to the second axis of rotation is arranged.
  • the central axis is preferably arranged next to the dressing unit in the axial direction relative to the first axis of rotation, with the dressing unit being located between the central axis and the tailstock.
  • the middle axis preferably lies in the vertical plane comprising the first axis of rotation and the second axis of rotation.
  • the work headstock preferably comprises a work piece motor for driving the work piece in rotation and a work piece spindle.
  • the work headstock can be moved on the swivel table and fixed there.
  • the dressing unit preferably comprises a number of different dressing tools, which are arranged next to one another in a horizontal plane. Since the dressing tools are mounted on the dressing unit so that they can be displaced in a horizontal direction transverse to the first axis of rotation, one of the dressing tools can be selected for dressing in each case by such a displacement process.
  • the plurality of dressing tools are preferably arranged next to one another in a horizontal direction transverse to the first axis of rotation.
  • the dressing unit comprises at least one static dressing tool and at least one dynamic dressing tool, so that different dressing processes can be carried out on the grinding wheel.
  • the pivoting table is pivotably mounted in a pivot bearing relative to the machine bed at an axial first end of the pivoting table related to the first axis of rotation.
  • a vertical distance between an axial one related to the first axis of rotation second end of the swivel table and the machine bed is defined by an adjustment element.
  • the vertical distance between the axial second end of the pivoting table, which is related to the first axis of rotation, and the machine bed is defined in particular by an adjustable length of the adjustment element.
  • the adjusting element is preferably formed by a spindle.
  • the adjustment element preferably includes a coarse adjustment and a fine adjustment.
  • the swiveling table can preferably be swiveled by at least ⁇ 5° in relation to the machine bed.
  • the machine bed includes a base plate on which the dressing unit, the pivot bearing and the adjustment element are attached.
  • the base plate is preferably made of cast steel.
  • Fig. 1 a side view of a preferred embodiment of a circular grinding machine according to the invention
  • FIG. 2 a perspective view of the in FIG. 1 cylindrical grinding machine shown
  • FIG. 3 a detailed view of the one shown in FIG. 1 shown rotary grinding machine with a hori zontally aligned swivel table
  • FIG. 4 a detailed view of the cylindrical grinding machine shown in FIG. 1 with a swiveling table inclined by -10°;
  • FIG. 5 a detailed view of the cylindrical grinding machine shown in FIG. 1 with a swiveling table inclined by +6°;
  • FIG. 6 a side view of the cylindrical grinding machine shown in FIG. 1 during a dressing process
  • FIG. 7 a detailed view of the cylindrical grinding machine shown in FIG. 1 during a dressing process with a swivel table inclined by -10°.
  • the cylindrical grinding machine includes a main stand 01, which carries a tower 02 and a machine bed 03.
  • the tower 02 carries a grinding unit 04, which is also referred to as a grinding headstock and which includes a grinding wheel motor (not shown) and a grinding wheel 06 driven by the grinding wheel motor.
  • a swivel table 07 is arranged on the machine bed 03, on which a workpiece headstock 08 for the rotational drive of a workpiece 09 (shown in FIG. 4) is fixedly mounted.
  • a tailstock 11 is arranged on the swivel table 07 so that it can be fixed. The distance between the tailstock 11 and the workhead 08 can be changed.
  • the workpiece 09 is between the workhead 08 and the tailstock 11 clampable .
  • Workpiece headstock 08 includes a workpiece motor 12 for driving workpiece 09 in rotation.
  • the workhead 08 defines a first axis of rotation about which the workpiece 09 rotates.
  • the swiveling table 07 can be tilted in relation to the machine bed 03 .
  • the pivoting table 07 is connected on the one hand to the machine bed 03 via a pivot bearing 13 and on the other hand to the machine bed 03 via an adjustment element 14 .
  • a dressing unit 16 for dressing the grinding wheel 06 is also arranged on the machine bed 03 and is located axially next to the tailstock 11 in relation to the first axis of rotation.
  • the dressing unit 16 is thus located between the tailstock 11 and the tower 02 .
  • the dressing unit 16 is mounted on the machine bed 03 so that it can be displaced in a horizontal direction transversely to the first axis of rotation.
  • the grinding wheel motor drives the grinding wheel 06 so that it rotates about a second axis of rotation.
  • Tower 02, the first axis of rotation and the second axis of rotation all lie in a vertical plane.
  • the tower 02 is carried by the main stand 01 via a longitudinal guide 17 .
  • the longitudinal guide 17 allows the tower 02 to be displaced axially in the direction of the second axis of rotation, ie. H . in the vertical plane comprising the first axis of rotation and the second axis of rotation.
  • a vertical guide 18 (shown in FIG. 2 ), which carries the grinding unit 04 , is arranged in or on the tower 02 .
  • the vertical guide 18 allows a vertical displacement of the grinding unit 04 relative to the tower 02.
  • the vertical guide 18 thus allows a vertical displacement of the grinding wheel 06, so that the grinding wheel 06 can be guided in the vertical direction to the workpiece 09.
  • the vertical guide 18 has a central axis which lies in the vertical plane comprising the first axis of rotation and the second axis of rotation.
  • FIG. 2 shows a perspective view of the cylindrical grinding machine shown in FIG. 1 . This view includes the vertical guide 18 located in the tower 02 can be seen.
  • FIG. 3 shows a detailed view of the cylindrical grinding machine shown in FIG.
  • the pivoting table 07 is aligned horizontally.
  • FIG. 4 shows a further detailed view of the cylindrical grinding machine shown in FIG.
  • the swiveling table 07 is inclined by -10° in relation to the machine bed 03 and thus also by -10° in relation to the horizontal.
  • the adjustment element 14 is adjusted.
  • the workpiece 09 to be ground is shown in this view.
  • the grinding wheel 06 rotating about the second axis of rotation grinds the workpiece 09 rotating about the first axis of rotation.
  • FIG. 5 shows a further detailed view of the cylindrical grinding machine shown in FIG.
  • the swivel table 07 is in this representation by +6 ° compared to the machine bed 03 and thus also inclined by +6° to the horizontal. To set the inclination, the adjustment element 14 is adjusted.
  • FIG. 6 shows a side view of the cylindrical grinding machine shown in FIG. 1 during a dressing process.
  • the grinding wheel 06 was guided to the dressing unit 16 using the longitudinal guide 17 and using the vertical guide 18 (shown in FIG. 2).
  • the grinding wheel 06 rotating about the second axis of rotation is dressed by the dressing unit 16 .
  • FIG. 7 shows a detailed view of the cylindrical grinding machine shown in FIG. 1 during a dressing process.
  • the grinding wheel 06 was guided to the dressing unit 16 using the longitudinal guide 17 (shown in FIG. 6) and using the vertical guide 18 (shown in FIG. 2).
  • the swivel table 07 was inclined by -10° relative to the machine bed 03 and thus also by -10° relative to the horizontal.
  • the workpiece 09 to be ground is also shown in this view.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

The present invention relates to a circular grinding machine for grinding a cylindrical workpiece. The circular grinding machine comprises a machine bed (03) which supports a pivoting table (07) on which a workpiece headstock (08) is arranged such that it can be fixedly mounted to drive the workpiece in rotation and on which a tailstock (11) is fixably arranged. A first rotation axis is defined by the workpiece headstock (08) and the tailstock (11). The pivoting table (07) is pivotable about a pivot axis relative to the machine bed (03). The circular grinding machine additionally comprises an abrasive disc (06) which is rotatable about a second rotation axis. The first rotation axis and the second rotation axis are arranged jointly in a vertical plane, with the second rotation axis being arranged above the first rotation axis. A longitudinal guide (17) arranged in this vertical plane is used to axially displace the abrasive disc (06). A dressing unit (16) is arranged next to the tailstock (11) on the machine bed (03) in the axial direction relative to the first rotation axis.

Description

Rundschleifmaschine mit Abrichteinheit Cylindrical grinding machine with dressing unit
Die vorliegende Erfindung betri f ft eine Rundschlei fmaschine zum Schlei fen eines vorzugsweise rotierbaren Werkstückes . Die Rundschlei fmaschine dient insbesondere zum Schlei fen eines beispielsweise zylinderförmigen Werkstückes , zwischen Spitzen oder einseitig gespannt , mithil fe einer rotierenden Schlei fscheibe . Die Rundschlei fmaschine umfasst außerdem eine Abrichteinheit zum Abrichten der Schlei fscheibe . The present invention relates to a cylindrical grinding machine for grinding a preferably rotatable workpiece. The cylindrical grinding machine is used in particular for grinding a cylindrical workpiece, for example, clamped between centers or on one side with the aid of a rotating grinding wheel. The cylindrical grinding machine also includes a dressing unit for dressing the grinding wheel.
Die DE 31 36 396 Al zeigt einer Portalschlei fmaschine mit einem oder mehreren Ständern und einer oben am Ständer befestigten Traverse . An der Traverse ist ein Zustellschlitten bewegbar gelagert , welcher einen Werkzeugantriebskopf zum Antrieb eines Bearbeitungswerkzeuges trägt . Eine Werkstückeinrichtbank weist zwei beabstandete Werkstückhalterungen auf , zwischen denen das zu bearbeitende Werkstück frei gehalten und um seine Längsachse rotatorisch angetrieben wird . Der Zustellschlitten ist quer zur Werkstücklängsachse bewegbar . Das Bearbeitungswerkzeug ist bei der Bearbeitung des Werkstückes über der Werkstücklängsachse angeordnet . Der Zustellschlitten ist zusätzlich parallel zur Längsachse des Werkstückes bewegbar . Die zwei beabstandeten Werkstückhalterungen sind durch einen auf einer Arbeitsbühne feststehenden Werkstückspindelstock und durch einen auf der Arbeitsbühne festlegbaren Reitstock gebildet . DE 31 36 396 A1 shows a portal grinding machine with one or more stands and a traverse attached to the stand at the top. An infeed carriage is movably mounted on the traverse and carries a tool drive head for driving a machining tool. A workpiece set-up bench has two spaced workpiece holders between which the workpiece to be machined is kept free and is driven in rotation about its longitudinal axis. The infeed carriage can be moved transversely to the longitudinal axis of the workpiece. When machining the workpiece, the machining tool is arranged above the longitudinal axis of the workpiece. The infeed carriage can also be moved parallel to the longitudinal axis of the workpiece. The two spaced workpiece holders are formed by a workpiece headstock fixed on a working platform and by a tailstock that can be fixed on the working platform.
Die DD 7177 zeigt eine Vorrichtung zum Feinabrichten einer Schlei fscheibe . Eine zwangläufig geführte , mitlaufende und winklig zur Drehachse der Schlei fscheibe gestellte Abrichtscheibe wird parallel zur Drehachse der Schlei fscheibe bewegt . Die Drehachse der unter einem Winkel gestellten Abrichtscheibe liegt in einer gemeinsamen Ebene mit der Drehachse der Schleifscheibe . The DD 7177 shows a device for the fine dressing of a grinding wheel. A positively guided dressing wheel that runs along and is set at an angle to the axis of rotation of the grinding wheel is moved parallel to the axis of rotation of the grinding wheel. The axis of rotation of the dressing wheel set at an angle lies in a common plane with the axis of rotation of the grinding wheel.
In der EP 3 351 344 Al ist eine Rundschleifmaschine beschrieben, bei welcher eine Schleifscheibe vertikal nach oben geführt wird, während das zu bearbeitende Werkstück unterhalb der Schleifscheibe positioniert ist. Eine Drehachse des Werkstückes liegt auf einer vertikalen Ebene, auf welcher eine Drehachse der Schleifscheibe in vertikaler Richtung bewegt wird. Die Drehachse des Werkstückes kann in dieser vertikalen Ebene sowie quer bzw. rechtwinklig dazu im Tausendstelmillimeterbereich verstellt werden. Ein Nachteil dieser Rundschleifmaschine besteht darin, dass es trotz der Anordnung der Schleifscheibe über dem Werkstück zu ungewollten Verkippungen zwischen der Schleifscheibe und dem Werkstück kommen kann, sodass die erzielbare Bearbeitungsgenauigkeit begrenzt ist. EP 3 351 344 A1 describes a cylindrical grinding machine in which a grinding wheel is guided vertically upwards while the workpiece to be machined is positioned below the grinding wheel. A rotation axis of the workpiece lies on a vertical plane on which a rotation axis of the grinding wheel is moved in the vertical direction. The axis of rotation of the workpiece can be adjusted in this vertical plane as well as transversely or at right angles to it in the thousandths of a millimeter range. A disadvantage of this cylindrical grinding machine is that, despite the arrangement of the grinding wheel over the workpiece, unwanted tilting can occur between the grinding wheel and the workpiece, so that the machining accuracy that can be achieved is limited.
Aus der US 2,842,905 ist ein Werkstückhalter bekannt, mit welchem Werkstücke in einer zu bearbeitenden Position in einer Schleifmaschine gehalten werden sollen. Der Halter ist insbesondere für stabförmige Werkstücke ausgebildet. A workpiece holder is known from US Pat. No. 2,842,905, with which workpieces are to be held in a position to be machined in a grinding machine. The holder is designed in particular for rod-shaped workpieces.
Die DE 20 2011 002 176 Ul zeigt eine Schleif-/Poliermaschine, welche einen Maschinenkörper mit einem Stützsockel sowie eine an den Stützsockel montierte Plattform zum Halten eines Werkstückes umfasst. Ein Ständer erstreckt sich vom Stützsockel in Richtung einer Z-Achse. Die Schleif-/Polier- maschine umfasst zudem eine erste Schleifeinheit, die eine erste Schleifscheibe aufweist und verschiebbar am Ständer montiert ist, sowie eine zweite Schleifeinheit, die eine zweite Schleifscheibe, welche zum gleichzeitigen Bewegen mit der ersten Schleifeinheit an die erste Schleifeinheit montiert und relativ zur ersten Schlei feinheit verschiebbar ist , um die zweite Schlei fscheibe in Richtung einer Y-Achse zu bewegen . DE 20 2011 002 176 U1 shows a grinding/polishing machine which comprises a machine body with a support base and a platform mounted on the support base for holding a workpiece. A post extends from the support base in a Z-axis direction. The grinding/polishing machine also includes a first grinding unit having a first grinding wheel and slidably mounted on the stand, and a second grinding unit having a second grinding wheel mounted to the first grinding unit for simultaneous movement with the first grinding unit and is displaceable relative to the first grinding unit in order to move the second grinding wheel in a Y-axis direction.
Aus der DE 1 118 646 ist ein auf einen Auf spanntisch einer Flächenschlei fmaschine aufsetzbares Zusatzgerät zum Rund- und Konisch-Schlei f en von Rundwerkstücken bekannt , auf dessen mit einer Aufspannnut versehener Grundplatte ein Reitstock und diesem gegenüber ein über Keilriemen motorisch angetriebener Werkstückspindelstock mit einer Mitnehmerscheibe angeordnet sind . Die Grundplatte ist nach beiden Seiten hin neigbar . DE 1 118 646 discloses an attachment for circular and conical grinding of circular workpieces that can be placed on a clamping table of a surface grinding machine Drive plate are arranged. The base plate can be tilted to both sides.
Die DE 10 2014 102 938 Al zeigt eine Schlei fmaschine mit einem Werkzeugmagazin . Die Schlei fmaschine umfasst ein Maschinenbett , zwei seitlich am Maschinenbett angeordnete vertikale Ständer und eine auf den vertikalen Ständern in einer hori zontalen linearen Y-Achse verfahrbare Brücke , in der Art eines Portalaufbaus . Die Schlei fmaschine umfasst zudem einen an der Brücke in einer hori zontalen linearen X-Achse verfahrbaren X-Schlitten und einen an dem X-Schlitten in einer vertikalen linearen Z-Achse verfahrbaren Z-Schlitten sowie eine an dem Z-Schlitten gelagerte Schlei f spindel . Ein auf dem Maschinenbett angeordneter Maschinentisch trägt eine Werkstückspanneinrichtung . Das Werkzeugmagazin ist als ein Magazinrad ausgebildet und weist an seinem Umfang Werkzeugaufnahmen zum auswechselbaren Aufnehmen von Schlei fscheiben auf . Das Werkzeugmagazin ist um eine zur Z-Achse parallele Achse drehbar am Maschinentisch angeordnet . DE 10 2014 102 938 A1 shows a grinding machine with a tool magazine. The grinding machine comprises a machine bed, two vertical columns arranged laterally on the machine bed and a bridge that can be moved on the vertical columns in a horizontal, linear Y-axis, in the manner of a portal structure. The grinding machine also includes an X slide that can be moved on the bridge in a horizontal linear X axis and a Z slide that can be moved on the X slide in a vertical linear Z axis, as well as a grinding spindle mounted on the Z slide . A machine table arranged on the machine bed carries a workpiece clamping device. The tool magazine is designed as a magazine wheel and has tool holders on its circumference for interchangeably receiving grinding wheels. The tool magazine is arranged on the machine table so that it can rotate about an axis parallel to the Z-axis.
Die Aufgabe der vorliegenden Erfindung besteht ausgehend vom Stand der Technik darin, die Bearbeitungsgenauigkeit einer Rundschlei fmaschine zu erhöhen und dabei den konstruktiven Aufbau einfach zu halten . Gleichzeitig soll eine hohe Abrichtgenauigkeit realisierbar sein . Bevorzugt sollen die Abmessungen der Maschine so gestaltbar sein, dass sie in einer Werkhalle nur eine geringe Stellplatz fläche benötigt . Based on the prior art, the object of the present invention is to increase the machining accuracy of a circular grinding machine while keeping the structural design simple. At the same time, a high level of dressing accuracy should be realizable. Those should be preferred The dimensions of the machine can be designed in such a way that it only requires a small amount of space in a workshop.
Die genannte Aufgabe wird gelöst durch eine Rundschlei fmaschine gemäß dem beigefügten Anspruch 1 . The above object is achieved by a circular grinding machine according to appended claim 1 .
Die erfindungsgemäße Rundschlei fmaschine dient zum Schlei fen eines Werkstückes . Das Werkstück besteht bevorzugt aus Metall , beispielsweise aus Stahl . Mit der Rundschlei fmaschine können rotationssymmetrische aber auch nicht-rotationssymmetrische Werkstücke bearbeitet werden . Durch das Schlei fen des Werkstückes mit der Rundschlei fmaschine können hohe Anforderungen hinsichtlich der zu erzielenden Oberfläche , Genauigkeit , Maßhaltigkeit und Drall freiheit erfüllt werden . The rotary grinding machine according to the invention is used for grinding a workpiece. The workpiece preferably consists of metal, for example steel. Rotationally symmetrical as well as non-rotationally symmetrical workpieces can be machined with the cylindrical grinding machine. By grinding the workpiece with the cylindrical grinding machine, high demands can be met with regard to the surface to be achieved, accuracy, dimensional accuracy and freedom from twists.
Die Rundschlei fmaschine umfasst ein Maschinenbett , welches bevorzugt an einem Hauptständer der Rundschlei fmaschine befestigt ist , sodass das Maschinenbett fest auf einem Boden, auf welchem der Hauptständer steht , ruht . Der Hauptständer bildet einen Träger für alle weiteren Komponenten der Rundschlei fmaschine . Das Maschinenbett ist bevorzugt hori zontal ausgerichtet und bevorzugt ohne bewegliche Lagereinheiten mit dem Hauptständer verbunden . Das Maschinenbett trägt einen Schwenktisch, auf welchem ein Werkstückspindelstock zum rotatorischen Antrieb des Werkstückes fest montierbar angeordnet ist . Der Werkstückspindelstock und auch der Schwenktisch sind nicht dazu ausgebildet , während eines Schlei fens des Werkstückes verschoben zu werden . Der Werkstückspindelstock ist insbesondere nicht dazu ausgebildet , während eines Schlei fens des Werkstückes axial in Richtung einer Achse des Werkstückspindelstockes verschoben zu werden . Der Werkstückspindelstock ist bevorzugt fest auf dem Schwenktisch montiert . Der fest auf dem Maschinenbett montierbare Werkstückspindelstock und der auf dem Maschinenbett festlegbar angeordnete Reitstock sind während eines Schlei f- bzw . Abrichtvorganges fest mit dem Maschinenbett verbunden . The circular grinding machine includes a machine bed, which is preferably attached to a main stand of the circular grinding machine, so that the machine bed rests firmly on a floor on which the main stand stands. The main stand forms a support for all other components of the cylindrical grinding machine. The machine bed is preferably aligned horizontally and is preferably connected to the main column without moving bearing units. The machine bed carries a swivel table, on which a work headstock for the rotary drive of the work piece is arranged in a fixed mountable manner. The work headstock and also the swivel table are not designed to be shifted while the work piece is being ground. In particular, the workhead is not designed to be displaced axially in the direction of an axis of the workhead during grinding of the workpiece. The workhead is preferably fixed on the swivel table assembled . The work headstock, which can be mounted firmly on the machine bed, and the tailstock, which can be fixed on the machine bed, can be used during grinding or grinding. dressing process firmly connected to the machine bed.
Auf dem Schwenktisch bzw . einem an diesem befestigten Hubschlitten ist zudem ein Reitstock festlegbar angeordnet . Der Reitstock dient zur Aufnahme des Werkstückes an einem dem Werkstückspindelstock gegenüberliegenden axialen Ende des Werkstückes . Der Hubschlitten kann den Reitstock axial verlagern, wenn das Werkstück eingespannt bzw . ausgespannt werden soll . Durch den Werkstückspindelstock und den Reitstock ist eine erste Rotationsachse definiert , um welche das Werkstück rotierbar ist . Der Reitstock ist bevorzugt auf dem Schwenktisch verschiebbar und fixierbar, um an unterschiedlich lange Werkstücke angepasst werden zu können . On the swivel table or a tailstock is also arranged in a fixed manner on a lifting carriage fastened to this. The tailstock is used to hold the workpiece at an axial end of the workpiece opposite the workpiece headstock. The lifting slide can move the tailstock axially when the workpiece is clamped or should be stretched out. A first axis of rotation about which the workpiece can be rotated is defined by the workhead and the tailstock. The tailstock can preferably be moved and fixed on the swivel table in order to be able to adapt it to workpieces of different lengths.
Der Schwenktisch ist um eine in einer hori zontalen Richtung quer zur ersten Rotationsachse ausgerichtete Schwenkachse gegenüber dem Maschinenbett schwenkbar . Somit ist auch das im Werkstückspindelstock eingespannte Werkstück gegenüber dem Maschinenbett schwenkbar . Daher ist auch die erste Rotationsachse innerhalb einer vertikalen Ebene schwenkbar . Die Schwenkbewegung ist bevorzugt fixierbar, sodass der Schwenktisch insbesondere während des Schlei fens des Werkstückes nicht schwenkbar ist . Wenn die Schwenkbewegung fixiert ist , ist der Schwenktisch bevorzugt fest mit dem Maschinenbett verbunden . Der Schwenktisch ist bevorzugt in Bezug auf eine Hori zontale schwenkbar, sodass der Schwenktisch in einer Ausgangslage hori zontal ausgerichtet ist . In dieser Ausgangslage ist auch die erste Rotationsachse hori zontal ausgerichtet . Die Rundschleifmaschine umfasst zudem eine um eine zweite Rotationsachse rotierbare Schleifscheibe zum Schleifen des Werkstückes. Die erste Rotationsachse und die zweite Rotationsachse sind gemeinsam in einer vertikalen Ebene angeordnet. Die zweite Rotationsachse ist über der ersten Rotationsachse angeordnet, sodass die Schleifscheibe über dem Werkstück angeordnet ist. Somit erfolgt ein Bearbeiten des Werkstückes durch die Schleifscheibe von oben. Die zweite Rotationsachse ist bezogen auf die vertikale Richtung über der ersten Rotationsachse angeordnet. Die Schleifscheibe sitzt bevorzugt auf einer Welle, bei welcher es sich insbesondere um eine Schleif spindel handelt. Diese Schleif spindel ist bevorzugt in mindestens einem, vorzugsweise in mehreren rotativen Lagern gelagert, sodass sie rotieren kann, wodurch auch die Schleifscheibe rotiert und das Werkstück mit der Schleifscheibe geschliffen werden kann. Die zweite Rotationsachse ist bevorzugt horizontal ausgerichtet, insbesondere fest horizontal. The swivel table can be swiveled relative to the machine bed about a swivel axis aligned in a horizontal direction transverse to the first axis of rotation. This means that the workpiece clamped in the workpiece headstock can also be swiveled relative to the machine bed. The first axis of rotation can therefore also be pivoted within a vertical plane. The pivoting movement can preferably be fixed, so that the pivoting table cannot be pivoted, in particular while the workpiece is being ground. If the pivoting movement is fixed, the pivoting table is preferably firmly connected to the machine bed. The pivoting table can preferably be pivoted with respect to a hori zontal, so that the pivoting table is aligned horizontally in an initial position. In this starting position, the first axis of rotation is also aligned horizontally. The cylindrical grinding machine also includes a grinding wheel that can be rotated about a second axis of rotation for grinding the workpiece. The first axis of rotation and the second axis of rotation are arranged together in a vertical plane. The second axis of rotation is positioned above the first axis of rotation such that the grinding wheel is positioned above the workpiece. The workpiece is thus machined from above by the grinding wheel. The second axis of rotation is arranged above the first axis of rotation with respect to the vertical direction. The grinding wheel is preferably seated on a shaft, which is in particular a grinding spindle. This grinding spindle is preferably mounted in at least one, preferably in several, rotary bearings, so that it can rotate, whereby the grinding wheel also rotates and the workpiece can be ground with the grinding wheel. The second axis of rotation is preferably aligned horizontally, in particular fixed horizontally.
Die Rundschleifmaschine umfasst zudem eine Längsführung zum Verschieben der rotierbaren Schleifscheibe axial in Richtung der zweiten Rotationsachse, d. h. zum Verschieben in die durch die zweite Rotationsachse definierte Richtung. Insbesondere wird dazu ein Turm, welcher die Schleifscheibenspindel und die Schleifscheibe trägt, axial verschoben. Hierdurch kann die Schleifscheibe an unterschiedliche axiale Positionen des Werkstückes bewegt werden, um das Werkstück jeweils dort zu schleifen. Die Längsführung ist ebenfalls in der die erste Rotationsachse und die zweite Rotationsachse umfassenden vertikalen Ebene angeordnet. Die Längsführung weist insbesondere eine mittlere Führungsachse auf, welche bevorzugt in der die erste Rotationsachse und die zweite Rotationsachse umfassenden vertikalen Ebene angeordnet ist. Die Längsführung ist insbesondere dazu ausgebildet , die Schlei fscheibe mittelbar entlang der zweiten Rotationsachse zu verschieben . Die Längs führung ist bevorzugt dazu ausgebildet , die die Schlei fscheibe tragende Schlei fscheibenspindel bzw . das mindestens eine die Schlei fscheibenspindel lagernde Lager in Richtung der zweiten Rotationsachse zu verschieben, wodurch die Schlei fscheibe mittelbar in Richtung der zweiten Rotationsachse , d . h . auf der zweiten Rotationsachse verschoben wird . Bevorzugt handelt es sich bei der Welle um eine Schlei f spindel mit einem elektrischen Schlei fscheibenmotor . Bei dem mindestens einen Lager handelt es sich entsprechend um ein Spindellager . Die Längs führung dient dann zum mittelbaren oder unmittelbaren Verschieben des Schlei fscheibenmotors axial in Richtung der zweiten Rotationsachse , wodurch auch die Schlei fscheibe mittelbar in Richtung der zweiten Rotationsachse verschoben wird . Ein Vorteil der axialen Verschiebung des Schlei fscheibenmotors besteht darin, dass der Abstand zwischen dem Spindellager und der Schlei fscheibe konstant ist . The cylindrical grinding machine also includes a longitudinal guide for displacing the rotatable grinding wheel axially in the direction of the second axis of rotation, ie for displacing in the direction defined by the second axis of rotation. For this purpose, in particular, a tower, which carries the grinding wheel spindle and the grinding wheel, is shifted axially. As a result, the grinding wheel can be moved to different axial positions of the workpiece in order to grind the workpiece there in each case. The longitudinal guide is also arranged in the vertical plane comprising the first axis of rotation and the second axis of rotation. The longitudinal guide has in particular a central guide axis which is preferably arranged in the vertical plane comprising the first axis of rotation and the second axis of rotation. The longitudinal guide is designed in particular to move the grinding wheel indirectly along the second axis of rotation. The longitudinal guide is preferably designed to support the grinding wheel spindle or spindle carrying the grinding wheel. to move the at least one bearing supporting the grinding wheel spindle in the direction of the second axis of rotation, as a result of which the grinding wheel is moved indirectly in the direction of the second axis of rotation, d. H . is shifted on the second axis of rotation. The shaft is preferably a grinding spindle with an electric grinding wheel motor. The at least one bearing is accordingly a spindle bearing. The longitudinal guide then serves for direct or indirect axial displacement of the grinding wheel motor in the direction of the second axis of rotation, as a result of which the grinding wheel is also displaced indirectly in the direction of the second axis of rotation. An advantage of the axial displacement of the grinding wheel motor is that the distance between the spindle bearing and the grinding wheel is constant.
Die Rundschlei fmaschine umfasst weiterhin eine Abrichteinheit zum Abrichten der Schlei fscheibe . Die Abrichteinheit ist bezogen auf die erste Rotationsachse in axialer Richtung neben dem Reitstock auf dem Maschinenbett angeordnet . Die Abrichteinheit ist also bevorzugt auch in der ersten Rotationsachse angeordnet und zwar neben dem Reitstock auf dem Maschinenbett . Die Abrichteinheit ist vorzugsweise in einer hori zontalen Richtung quer zur ersten Rotationsachse verschiebbar auf dem Maschinenbett gelagert , sodass sie in dieser Richtung zur Schlei fscheibe bewegt werden kann; beispielsweise um ein auf der Abrichteinheit sitzendes Abrichtwerkzeug an die Schlei fscheibe zu führen oder um aus verschiedenen auf der Abrichteinheit sitzenden Abrichtwerkzeugen auswählen zu können . Die Abrichteinheit , der Werkstückspindelstock und der Reitstock sind gemeinsam auf dem Maschinenbett angeordnet . Die auf dem Maschinenbett angeordnete Abrichteinheit ist bevorzugt fest mit dem Maschinenbett verbunden, sodass die Abrichteinheit während eines Abrichtvorganges über das Maschinenbett auch fest mit dem Werkstückspindelstock, dem Reitstock und dem Hauptständer verbunden ist . Dadurch wird ausgeschlossen, dass es während des Abrichtens zu unerwünschten Verlagerungen der Abrichteinheit kommt , was zu einer hohen Genauigkeit beim Abrichten der Schlei fscheibe führt . The cylindrical grinding machine also includes a dressing unit for dressing the grinding wheel. The dressing unit is arranged in the axial direction next to the tailstock on the machine bed in relation to the first axis of rotation. The dressing unit is therefore preferably also arranged in the first axis of rotation, specifically next to the tailstock on the machine bed. The dressing unit is preferably mounted on the machine bed so that it can be displaced in a horizontal direction transversely to the first axis of rotation, so that it can be moved in this direction to the grinding wheel; for example, to guide a dressing tool sitting on the dressing unit to the grinding wheel or to be able to choose from different dressing tools sitting on the dressing unit. The dressing unit, the workhead and the Tailstock are arranged together on the machine bed. The dressing unit arranged on the machine bed is preferably firmly connected to the machine bed, so that the dressing unit is also firmly connected to the work headstock, the tailstock and the main stand via the machine bed during a dressing process. This prevents unwanted displacements of the dressing unit during dressing, which leads to high accuracy when dressing the grinding wheel.
Ein besonderer Vorteil der Rundschlei fmaschine besteht darin, dass die gemeinsame Anordnung der beiden Rotationsachsen und der Längs führung in einer einzigen vertikalen Ebene eine hohe Bearbeitungsgenauigkeit und einen kompakten Aufbau der Rundschlei fmaschine erlaubt . Zudem muss das auf dem Werkstückspindelstock sitzende Werkstück nicht in Richtung der zweiten Rotationsachse verfahren werden, da die Schlei fscheibe mithil fe der Längs führung längs verfahrbar ist . Somit sitzt das Werkstück fest auf dem Maschinenbett , wodurch eine erhöhte Bearbeitungsgenauigkeit ermöglicht ist . Durch den Verzicht auf eine während der Bearbeitung bewegliche Führungseinheit am Werkspindelstock ist insbesondere auch bei hohen senkrecht zur Rotationsachse wirkenden Schlei f kräf ten eine Verformung dieser Führungseinheit ausgeschlossen, wodurch die Position des Werkstücks während des gesamten Schlei fvorgangs auch unter dynamischer Beanspruchung unveränderlich ist . A particular advantage of the circular grinding machine is that the joint arrangement of the two rotary axes and the longitudinal guide in a single vertical plane allows for high machining accuracy and a compact design of the circular grinding machine. In addition, the workpiece sitting on the workhead does not have to be moved in the direction of the second axis of rotation, since the grinding wheel can be moved lengthwise with the help of the longitudinal guide. The workpiece is thus firmly seated on the machine bed, which enables increased machining accuracy. By doing without a guide unit on the work headstock that can be moved during machining, a deformation of this guide unit is excluded, especially with high grinding forces acting perpendicular to the axis of rotation, which means that the position of the workpiece is unchangeable during the entire grinding process, even under dynamic stress.
Bei bevorzugten Aus führungs formen umfasst die Rundschlei fmaschine weiterhin einen Schlei fscheibenmotor . Der Schlei fscheibenmotor weist eine Motorwelle auf , die mit der Schlei fscheibenspindel gekoppelt ist , auf welcher die Schlei fscheibe fest montiert ist . Die Motorwelle liegt in der zweiten Rotationsachse. Das mindestens eine rotative Lager zur Lagerung der Schleifscheibe ist beispielsweise in dem Schleifscheibenmotor ausgebildet. Die Längsführung trägt den Schleifscheibenmotor gemeinsam mit der Schleifscheibe. Die Längsführung trägt den Schleifscheibenmotor bevorzugt mittelbar . In preferred embodiments, the cylindrical grinding machine also includes a grinding wheel motor. The grinding wheel motor has a motor shaft coupled to the grinding wheel spindle on which the grinding wheel is fixedly mounted. The motor shaft is in the second axis of rotation. The at least one rotary bearing for mounting the grinding wheel is formed, for example, in the grinding wheel motor. The longitudinal guide carries the grinding wheel motor together with the grinding wheel. The longitudinal guide preferably supports the grinding wheel motor indirectly.
Die Längsführung umfasst bevorzugt zwei parallele Führungsschienen, die in einer horizontalen Ebene angeordnet sind. In der Mitte zwischen diesen beiden Führungsschienen verläuft die mittlere Führungsachse, welche bevorzugt in der die erste Rotationsachse und die zweite Rotationsachse umfassenden vertikalen Ebene angeordnet ist. Die Führungsschienen sitzen bevorzugt auf dem Hauptständer der Rundschleifmaschine. The longitudinal guide preferably comprises two parallel guide rails which are arranged in a horizontal plane. The central guide axis runs in the middle between these two guide rails and is preferably arranged in the vertical plane comprising the first axis of rotation and the second axis of rotation. The guide rails are preferably located on the main stand of the cylindrical grinding machine.
Die Längsführung umfasst bevorzugt einen ersten Aktuator, durch welchen die Längsführung antreibbar ist. Somit kann die Schleifscheibe durch den Antrieb des ersten Aktuators in Richtung der zweiten Rotationsachse verschoben werden. Die Längsführung erlaubt eine Verschiebung der rotierbaren Schleifscheibe von bevorzugt mindestens 400 mm und weiter bevorzugt mindestens 700 mm. The longitudinal guide preferably includes a first actuator, by which the longitudinal guide can be driven. The grinding wheel can thus be displaced in the direction of the second axis of rotation by the drive of the first actuator. The longitudinal guide allows the rotatable grinding wheel to be displaced by preferably at least 400 mm and more preferably at least 700 mm.
Bei bevorzugten Aus führungs formen umfasst die Rundschleifmaschine weiterhin eine Vertikalführung zur vertikalen Führung der Schleifscheibe. Die Schleifscheibe kann durch die vertikale Führung in vertikaler Richtung nach oben und unten geführt werden. Die Schleifscheibe ist daher mit der Vertikalführung von oben zum Werkstück führbar, um das Werkstück zu schleifen. Bezogen auf die erste Rotationsachse wird die Schleifscheibe durch die Vertikalführung in radialer Richtung zum Werkstück geführt. Die Vertikalführung trägt bevorzugt den Schleifscheibenmotor gemeinsam mit der Schleifscheibe. Die Längsführung trägt bevorzugt die Vertikalführung und somit mittelbar auch den Schleifscheibenmotor. In preferred embodiments, the cylindrical grinding machine also includes a vertical guide for guiding the grinding wheel vertically. The grinding wheel can be guided up and down in the vertical direction by the vertical guide. The grinding wheel can therefore be guided to the workpiece from above with the vertical guide in order to grind the workpiece. In relation to the first axis of rotation, the grinding wheel is guided in the radial direction to the workpiece by the vertical guide. The vertical guide preferably carries the grinding wheel motor together with the grinding wheel. the Longitudinal guide preferably carries the vertical guide and thus indirectly also the grinding wheel motor.
Die Vertikalführung umfasst bevorzugt einen zweiten Aktuator, durch welchen die Vertikalführung antreibbar ist. Somit kann die Schleifscheibe durch den Antrieb des zweiten Aktuators in vertikaler Richtung nach oben und unten verschoben werden. Die Vertikalführung erlaubt eine Verschiebung der rotierbaren Schleifscheibe von bevorzugt mindestens 200 mm. The vertical guide preferably includes a second actuator, by which the vertical guide can be driven. Thus, the grinding wheel can be shifted up and down in the vertical direction by driving the second actuator. The vertical guide allows the rotatable grinding wheel to be displaced by preferably at least 200 mm.
Bei bevorzugten Aus führungs formen umfasst die Rundschleifmaschine weiterhin einen Turm, welcher von der Längsführung getragen wird. Der Turm trägt die Vertikalführung, wobei die Vertikalführung bevorzugt in oder an dem Turm angeordnet ist. Die Vertikalführung trägt die Schleifscheibe; insbesondere den Schleifscheibenmotor mit der angekoppelten Schleifscheibenspindel und der darauf sitzenden Schleifscheibe. Der Turm ist bezogen auf die zweite Rotationsachse in axialer Richtung neben der Schleifscheibe angeordnet. Der Turm ist bezogen auf die erste Rotationsachse in axialer Richtung bevorzugt neben der Abrichteinheit angeordnet, wobei sich die Abrichteinheit zwischen dem Turm und dem Reitstock befindet. In preferred embodiments, the cylindrical grinding machine also includes a tower which is supported by the longitudinal guide. The tower carries the vertical guide, with the vertical guide preferably being arranged in or on the tower. The vertical guide carries the grinding wheel; in particular the grinding wheel motor with the coupled grinding wheel spindle and the grinding wheel sitting on it. The tower is arranged next to the grinding wheel in the axial direction in relation to the second axis of rotation. The tower is preferably arranged next to the dressing unit in the axial direction relative to the first axis of rotation, with the dressing unit being located between the tower and the tailstock.
Der Turm wird bevorzugt von den beiden Führungsschienen auf dem Hauptständer getragen und in diesen die Längsführung bildenden Führungsschienen geführt. Vorzugsweise wird der Turm entlang der Längsführung verschoben, um die Schleifscheibe zu verschieben . The tower is preferably carried by the two guide rails on the main stand and is guided in these guide rails, which form the longitudinal guide. The tower is preferably displaced along the longitudinal guide in order to displace the grinding wheel.
Der Turm weist bevorzugt eine mittlere Achse auf, welche vertikal ausgerichtet ist und bezogen auf die zweite Rotationsachse in axialer Richtung neben der Schleifscheibe angeordnet ist . Die mittlere Achse ist bezogen auf die erste Rotationsachse in axialer Richtung bevorzugt neben der Abrichteinheit angeordnet , wobei sich die Abrichteinheit zwischen der mittleren Achse und dem Reitstock befindet . Die mittlere Achse liegt bevorzugt in der die erste Rotationsachse und die zweite Rotationsachse umfassenden vertikalen Ebene . The turret preferably has a central axis which is vertically oriented and axially adjacent to the grinding wheel relative to the second axis of rotation is arranged. The central axis is preferably arranged next to the dressing unit in the axial direction relative to the first axis of rotation, with the dressing unit being located between the central axis and the tailstock. The middle axis preferably lies in the vertical plane comprising the first axis of rotation and the second axis of rotation.
Der Werkstückspindelstock umfasst bevorzugt einen Werkstückmotor zum rotatorischen Antrieb des Werkstückes und eine Werkstückspindel . Der Werkstückspindelstock ist auf dem Schwenktisch verschiebbar und dort festlegbar . The work headstock preferably comprises a work piece motor for driving the work piece in rotation and a work piece spindle. The work headstock can be moved on the swivel table and fixed there.
Die Abrichteinheit umfasst bevorzugt mehrere unterschiedliche Abrichtwerkzeuge , welche in einer hori zontalen Ebene nebeneinander angeordnet sind . Da die Abrichtwerkzeuge in einer hori zontalen Richtung quer zur ersten Rotationsachse verschiebbar auf der Abrichteinheit gelagert sind, kann durch einen solchen Verschiebevorgang j eweils eines der Abrichtwerkzeuge zum Abrichten ausgewählt werden . Die mehreren Abrichtwerkzeuge sind bevorzugt in einer hori zontalen Richtung quer zur ersten Rotationsachse nebeneinander angeordnet . The dressing unit preferably comprises a number of different dressing tools, which are arranged next to one another in a horizontal plane. Since the dressing tools are mounted on the dressing unit so that they can be displaced in a horizontal direction transverse to the first axis of rotation, one of the dressing tools can be selected for dressing in each case by such a displacement process. The plurality of dressing tools are preferably arranged next to one another in a horizontal direction transverse to the first axis of rotation.
Gemäß einer bevorzugten Aus führungs form umfasst die Abrichteinheit mindestens ein statisches Abrichtwerkzeug und mindestens ein dynamisches Abrichtwerkzeug, sodass unterschiedliche Abrichtvorgänge an der Schlei fscheibe vorgenommen werden können . According to a preferred embodiment, the dressing unit comprises at least one static dressing tool and at least one dynamic dressing tool, so that different dressing processes can be carried out on the grinding wheel.
Bei bevorzugten Aus führungs formen ist der Schwenktisch an einem auf die erste Rotationsachse bezogenen axialen ersten Ende des Schwenktisches in einem Schwenklager gegenüber dem Maschinenbett schwenkbar gelagert . Ein vertikaler Abstand zwischen einem auf die erste Rotationsachse bezogenen axialen zweiten Ende des Schwenktisches und dem Maschinenbett ist durch ein Verstellelement definiert . Der vertikale Abstand zwischen dem auf die erste Rotationsachse bezogenen axialen zweiten Ende des Schwenktisches und dem Maschinenbett ist insbesondere durch eine verstellbare Länge des Verstellelementes definiert . Das Verstellelement ist bevorzugt durch eine Spindel gebildet . Das Verstellelement umfasst bevorzugt eine Grobeinstellung und eine Feineinstellung . In preferred embodiments, the pivoting table is pivotably mounted in a pivot bearing relative to the machine bed at an axial first end of the pivoting table related to the first axis of rotation. A vertical distance between an axial one related to the first axis of rotation second end of the swivel table and the machine bed is defined by an adjustment element. The vertical distance between the axial second end of the pivoting table, which is related to the first axis of rotation, and the machine bed is defined in particular by an adjustable length of the adjustment element. The adjusting element is preferably formed by a spindle. The adjustment element preferably includes a coarse adjustment and a fine adjustment.
Der Schwenktisch ist bevorzugt um mindestens ±5 ° gegenüber dem Maschinenbett schwenkbar . The swiveling table can preferably be swiveled by at least ±5° in relation to the machine bed.
Bei bevorzugten Aus führungs formen umfasst das Maschinenbett eine Grundplatte , auf welcher die Abrichteinheit , das Schwenklager und das Verstellelement befestigt sind . Die Grundplatte besteht bevorzugt aus Stahlguss . In preferred embodiments, the machine bed includes a base plate on which the dressing unit, the pivot bearing and the adjustment element are attached. The base plate is preferably made of cast steel.
Weitere Einzelheiten und Weiterbildungen der Erfindung ergeben sich aus der nachfolgenden Beschreibung einer bevorzugten Aus führungs form der Erfindung, unter Bezugnahme auf die Zeichnung . Es zeigen : Further details and developments of the invention result from the following description of a preferred embodiment of the invention, with reference to the drawing. Show it :
Fig . 1 : eine Seitenansicht einer bevorzugten Aus führungs form einer erfindungsgemäßen Rundschlei fmaschine ; Fig. 1: a side view of a preferred embodiment of a circular grinding machine according to the invention;
Fig . 2 : eine perspektivische Ansicht der in Fig . 1 gezeigten Rundschlei fmaschine ; Fig. 2: a perspective view of the in FIG. 1 cylindrical grinding machine shown;
Fig . 3 : eine Detailansicht der in Fig . 1 gezeigten Rundschlei fmaschine mit einem hori zontal ausgerichteten Schwenktisch; Fig. 4: eine Detailansicht der in Fig. 1 gezeigten Rundschleifmaschine mit einem um -10° geneigten Schwenktisch; Fig. 3: a detailed view of the one shown in FIG. 1 shown rotary grinding machine with a hori zontally aligned swivel table; FIG. 4: a detailed view of the cylindrical grinding machine shown in FIG. 1 with a swiveling table inclined by -10°;
Fig. 5: eine Detailansicht der in Fig. 1 gezeigten Rundschleifmaschine mit einem um +6° geneigten Schwenktisch; FIG. 5: a detailed view of the cylindrical grinding machine shown in FIG. 1 with a swiveling table inclined by +6°;
Fig. 6: eine Seitenansicht der in Fig. 1 gezeigten Rundschleifmaschine während eines Abrichtvorganges; und FIG. 6: a side view of the cylindrical grinding machine shown in FIG. 1 during a dressing process; and
Fig. 7: eine Detailansicht der in Fig. 1 gezeigten Rundschleifmaschine während eines Abrichtvorganges mit einem um -10° geneigten Schwenktisch. FIG. 7: a detailed view of the cylindrical grinding machine shown in FIG. 1 during a dressing process with a swivel table inclined by -10°.
Fig. 1 zeigt eine Seitenansicht einer bevorzugten Ausführungsform einer erfindungsgemäßen Rundschleifmaschine. Die Rundschleifmaschine umfasst einen Hauptständer 01, welcher einen Turm 02 und ein Maschinenbett 03 trägt. Der Turm 02 trägt eine Schleifeinheit 04, die auch als Schleifspindelstock bezeichnet wird und welche einen Schleifscheibenmotor (nicht gezeigt) und eine vom Schleifscheibenmotor angetriebene Schleifscheibe 06 umfasst . 1 shows a side view of a preferred embodiment of a cylindrical grinding machine according to the invention. The cylindrical grinding machine includes a main stand 01, which carries a tower 02 and a machine bed 03. The tower 02 carries a grinding unit 04, which is also referred to as a grinding headstock and which includes a grinding wheel motor (not shown) and a grinding wheel 06 driven by the grinding wheel motor.
Auf dem Maschinenbett 03 ist ein Schwenktisch 07 angeordnet, auf welchem ein Werkstückspindelstock 08 zum rotatorischen Antrieb eines Werkstückes 09 (gezeigt in Fig. 4) fest montiert ist. Zudem ist ein Reitstock 11 festlegbar auf dem Schwenktisch 07 angeordnet. Der Abstand des Reitstockes 11 vom Werkstückspindelstock 08 ist veränderbar. Das Werkstück 09 ist zwischen dem Werkstückspindelstock 08 und dem Reitstock 11 einspannbar . Der Werkstückspindelstock 08 umfasst einen Werkstückmotor 12 zum rotatorischen Antrieb des Werkstückes 09 . Durch den Werkstückspindelstock 08 ist eine erste Rotationsachse definiert , um welche das Werkstück 09 rotiert . A swivel table 07 is arranged on the machine bed 03, on which a workpiece headstock 08 for the rotational drive of a workpiece 09 (shown in FIG. 4) is fixedly mounted. In addition, a tailstock 11 is arranged on the swivel table 07 so that it can be fixed. The distance between the tailstock 11 and the workhead 08 can be changed. The workpiece 09 is between the workhead 08 and the tailstock 11 clampable . Workpiece headstock 08 includes a workpiece motor 12 for driving workpiece 09 in rotation. The workhead 08 defines a first axis of rotation about which the workpiece 09 rotates.
Der Schwenktisch 07 kann gegenüber dem Maschinenbett 03 geneigt werden . Hierfür ist der Schwenktisch 07 einerseits über ein Schwenklager 13 mit dem Maschinenbett 03 und andererseits über ein Verstellelement 14 mit dem Maschinenbett 03 verbunden . The swiveling table 07 can be tilted in relation to the machine bed 03 . For this purpose, the pivoting table 07 is connected on the one hand to the machine bed 03 via a pivot bearing 13 and on the other hand to the machine bed 03 via an adjustment element 14 .
Auf dem Maschinenbett 03 ist zudem eine Abrichteinheit 16 zum Abrichten der Schlei fscheibe 06 angeordnet , welche sich bezogen auf die erste Rotationsachse axial neben dem Reitstock 11 befindet . Somit befindet sich die Abrichteinheit 16 zwischen dem Reitstock 11 und dem Turm 02 . Die Abrichteinheit 16 ist in einer hori zontalen Richtung quer zur ersten Rotationsachse verschiebbar auf dem Maschinenbett 03 gelagert . A dressing unit 16 for dressing the grinding wheel 06 is also arranged on the machine bed 03 and is located axially next to the tailstock 11 in relation to the first axis of rotation. The dressing unit 16 is thus located between the tailstock 11 and the tower 02 . The dressing unit 16 is mounted on the machine bed 03 so that it can be displaced in a horizontal direction transversely to the first axis of rotation.
Der Schlei fscheibenmotor treibt die Schlei fscheibe 06 an, sodass diese um eine zweite Rotationsachse rotiert . Der Turm 02 , die erste Rotationsachse und die zweite Rotationsachse liegen gemeinsam in einer vertikalen Ebene . The grinding wheel motor drives the grinding wheel 06 so that it rotates about a second axis of rotation. Tower 02, the first axis of rotation and the second axis of rotation all lie in a vertical plane.
Der Turm 02 wird über eine Längs führung 17 von dem Hauptständer 01 getragen . Die Längs führung 17 erlaubt eine Verschiebung des Turmes 02 axial in Richtung der zweiten Rotationsachse , d . h . in der die erste Rotationsachse und die zweite Rotationsachse umfassenden vertikalen Ebene . Durch das Verschieben des Turmes 02 mithil fe der Längs führung 17 wird auch die Schlei fscheibe 06 in dieser Richtung verschoben . In oder an dem Turm 02 ist eine Vertikalführung 18 (gezeigt in Fig. 2) angeordnet, welche die Schleifeinheit 04 trägt. Die Vertikalführung 18 erlaubt eine vertikale Verschiebung der Schleifeinheit 04 gegenüber dem Turm 02. Die Vertikalführung 18 erlaubt somit eine vertikale Verschiebung der Schleifscheibe 06, sodass die Schleifscheibe 06 in vertikaler Richtung zum Werkstück 09 geführt werden kann. Die Vertikalführung 18 weist eine mittlere Achse auf, welche in der die erste Rotationsachse und die zweite Rotationsachse umfassenden vertikalen Ebene liegt. The tower 02 is carried by the main stand 01 via a longitudinal guide 17 . The longitudinal guide 17 allows the tower 02 to be displaced axially in the direction of the second axis of rotation, ie. H . in the vertical plane comprising the first axis of rotation and the second axis of rotation. By moving the tower 02 with the help of the longitudinal guide 17, the grinding wheel 06 is also moved in this direction. A vertical guide 18 (shown in FIG. 2 ), which carries the grinding unit 04 , is arranged in or on the tower 02 . The vertical guide 18 allows a vertical displacement of the grinding unit 04 relative to the tower 02. The vertical guide 18 thus allows a vertical displacement of the grinding wheel 06, so that the grinding wheel 06 can be guided in the vertical direction to the workpiece 09. The vertical guide 18 has a central axis which lies in the vertical plane comprising the first axis of rotation and the second axis of rotation.
Fig. 2 zeigt eine perspektivische Ansicht der in Fig. 1 gezeigten Rundschleifmaschine. In dieser Ansicht ist u. a. die im Turm 02 befindliche Vertikalführung 18 zu erkennen. FIG. 2 shows a perspective view of the cylindrical grinding machine shown in FIG. 1 . This view includes the vertical guide 18 located in the tower 02 can be seen.
Fig. 3 zeigt eine Detailansicht der in Fig. 1 gezeigten Rundschleifmaschine. Der Schwenktisch 07 ist horizontal ausgerichtet . FIG. 3 shows a detailed view of the cylindrical grinding machine shown in FIG. The pivoting table 07 is aligned horizontally.
Fig. 4 zeigt eine weitere Detailansicht der in Fig. 1 gezeigten Rundschleifmaschine. Der Schwenktisch 07 ist in dieser Darstellung um -10° gegenüber dem Maschinenbett 03 und somit auch um -10° gegenüber der Horizontalen geneigt. Zum Einstellen der Neigung wird das Verstellelement 14 verstellt. In dieser Ansicht ist das zu schleifende Werkstück 09 dargestellt. Die um die zweite Rotationsachse rotierende Schleifscheibe 06 schleift das um die erste Rotationsachse rotierende Werkstück 09. FIG. 4 shows a further detailed view of the cylindrical grinding machine shown in FIG. In this illustration, the swiveling table 07 is inclined by -10° in relation to the machine bed 03 and thus also by -10° in relation to the horizontal. To set the inclination, the adjustment element 14 is adjusted. The workpiece 09 to be ground is shown in this view. The grinding wheel 06 rotating about the second axis of rotation grinds the workpiece 09 rotating about the first axis of rotation.
Fig. 5 zeigt eine weitere Detailansicht der in Fig. 1 gezeigten Rundschleifmaschine. Der Schwenktisch 07 ist in dieser Darstellung um +6° gegenüber dem Maschinenbett 03 und somit auch um +6° gegenüber der Horizontalen geneigt. Zum Einstellen der Neigung wird das Verstellelement 14 verstellt. FIG. 5 shows a further detailed view of the cylindrical grinding machine shown in FIG. The swivel table 07 is in this representation by +6 ° compared to the machine bed 03 and thus also inclined by +6° to the horizontal. To set the inclination, the adjustment element 14 is adjusted.
Fig. 6 zeigt eine Seitenansicht der in Fig. 1 gezeigten Rundschleifmaschine während eines Abrichtvorganges. Zum Abrichten wurde die Schleifscheibe 06 mithilfe der Längsführung 17 und mithilfe der Vertikalführung 18 (gezeigt in Fig. 2) zu der Abrichteinheit 16 geführt. Die um die zweite Rotationsachse rotierende Schleifscheibe 06 wird durch die Abrichteinheit 16 abgerichtet . FIG. 6 shows a side view of the cylindrical grinding machine shown in FIG. 1 during a dressing process. For dressing, the grinding wheel 06 was guided to the dressing unit 16 using the longitudinal guide 17 and using the vertical guide 18 (shown in FIG. 2). The grinding wheel 06 rotating about the second axis of rotation is dressed by the dressing unit 16 .
Fig. 7 zeigt eine Detailansicht der in Fig. 1 gezeigten Rundschleifmaschine während eines Abrichtvorganges. Zum Abrichten wurde die Schleifscheibe 06 mithilfe der Längsführung 17 (gezeigt in Fig. 6) und mithilfe der Vertikalführung 18 (gezeigt in Fig. 2) zu der Abrichteinheit 16 geführt. Zusätzlich wurde der Schwenktisch 07 um -10° gegenüber dem Maschinenbett 03 und somit auch um -10° gegenüber der Horizontalen geneigt. In dieser Ansicht ist auch das zu schleifende Werkstück 09 dargestellt. FIG. 7 shows a detailed view of the cylindrical grinding machine shown in FIG. 1 during a dressing process. For dressing, the grinding wheel 06 was guided to the dressing unit 16 using the longitudinal guide 17 (shown in FIG. 6) and using the vertical guide 18 (shown in FIG. 2). In addition, the swivel table 07 was inclined by -10° relative to the machine bed 03 and thus also by -10° relative to the horizontal. The workpiece 09 to be ground is also shown in this view.
Bezugszeichenliste Reference List
01 Hauptständer 01 main stand
02 Turm 02 tower
03 Maschinenbett 03 machine bed
04 Schlei feinheit / Schlei fspindelstock04 Grinding fineness / grinding headstock
05 05
06 Schlei fscheibe 06 grinding wheel
07 Schwenktisch 07 swivel table
08 Werkstückspindelstock 08 Workhead
09 Werkstück 09 workpiece
10 10
11 Reitstock 11 Tailstock
12 Werkstückmotor 12 workpiece motor
13 Schwenklager 13 swivel bearings
14 Verstellelement 14 adjustment element
15 15
16 Abrichteinheit 16 dressing unit
17 Längs führung 17 Longitudinal guide
18 Vertikal führung 18 Vertical guidance

Claims

Patentansprüche Rundschleifmaschine zum Schleifen eines Werkstückes (09) ; umfassend : Patent claims Cylindrical grinding machine for grinding a workpiece (09); full :
- ein Maschinenbett (03) , welches einen Schwenktisch (07) trägt, auf welchem ein Werkstückspindelstock (08) zum rotatorischen Antrieb des Werkstückes (09) fest montierbar angeordnet ist und auf welchem ein Reitstock (11) festlegbar angeordnet ist, sodass durch den Werkstückspindelstock (08) und den Reitstock (11) eine erste Rotationsachse definiert ist, um welche das Werkstück (09) rotierbar ist, wobei der Schwenktisch (07) um eine in einer horizontalen Richtung quer zur ersten Rotationsachse ausgerichtete Schwenkachse gegenüber dem Maschinenbett (03) schwenkbar ist; - a machine bed (03) which carries a swivel table (07) on which a work headstock (08) for the rotary drive of the work piece (09) is arranged in a fixed mountable manner and on which a tailstock (11) is arranged in a fixable manner so that the work headstock (08) and the tailstock (11) a first axis of rotation is defined, about which the workpiece (09) can be rotated, the swivel table (07) being pivotable relative to the machine bed (03) about a swivel axis aligned in a horizontal direction transverse to the first axis of rotation is;
- eine um eine zweite Rotationsachse rotierbare Schleifscheibe (06) zum Schleifen des Werkstückes (09) , wobei die erste Rotationsachse und die zweite Rotationsachse gemeinsam in einer vertikalen Ebene angeordnet sind, wobei die zweite Rotationsachse über der ersten Rotationsachse angeordnet ist; - A grinding wheel (06) rotatable about a second axis of rotation for grinding the workpiece (09), the first axis of rotation and the second axis of rotation being arranged together in a vertical plane, the second axis of rotation being arranged above the first axis of rotation;
- eine Längsführung (17) zum Verschieben der Schleifscheibe (06) axial in Richtung der zweiten Rotationsachse, wobei die Längsführung (17) in der die erste Rotationsachse und die zweite Rotationsachse umfassenden vertikalen Ebene angeordnet ist; und - a longitudinal guide (17) for displacing the grinding wheel (06) axially in the direction of the second axis of rotation, the longitudinal guide (17) being arranged in the vertical plane comprising the first axis of rotation and the second axis of rotation; and
- eine Abrichteinheit (16) zum Abrichten der Schleifscheibe (06) , wobei die Abrichteinheit (16) bezogen auf die erste Rotationsachse in axialer Richtung neben dem Reitstock (11) auf dem Maschinenbett (03) angeordnet ist. - A dressing unit (16) for dressing the grinding wheel (06), wherein the dressing unit (16) is arranged in relation to the first axis of rotation in the axial direction next to the tailstock (11) on the machine bed (03).
2. Rundschleifmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die zweite Rotationsachse horizontal ausgerichtet ist. 2. Cylindrical grinding machine according to claim 1, characterized in that the second axis of rotation is aligned horizontally.
3. Rundschleifmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Längsführung (17) eine mittlere Führungsachse aufweist, welche in der die erste Rotationsachse und die zweite Rotationsachse umfassenden vertikalen Ebene angeordnet ist. 3. Cylindrical grinding machine according to claim 1 or 2, characterized in that the longitudinal guide (17) has a central guide axis which is arranged in the vertical plane comprising the first axis of rotation and the second axis of rotation.
4. Rundschleifmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass sie weiterhin einen Schleifscheibenmotor umfasst, der eine Motorwelle aufweist, auf welcher die Schleifscheibe (06) montiert ist, wobei die Längsführung (17) den Schleifscheibenmotor gemeinsam mit der Schleifscheibe (06) trägt. 4. Cylindrical grinding machine according to one of Claims 1 to 3, characterized in that it further comprises a grinding wheel motor which has a motor shaft on which the grinding wheel (06) is mounted, the longitudinal guide (17) guiding the grinding wheel motor together with the grinding wheel (06 ) carries.
5. Rundschleifmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sie weiterhin eine Vertikalführung (18) zur vertikalen Führung der Schleifscheibe (06) umfasst, mit welcher die Schleifscheibe (06) zum Werkstück (09) führbar ist. 5. Cylindrical grinding machine according to one of claims 1 to 4, characterized in that it further comprises a vertical guide (18) for vertical guidance of the grinding wheel (06), with which the grinding wheel (06) to the workpiece (09) can be guided.
6. Rundschleifmaschine nach Anspruch 5, dadurch gekennzeichnet, dass sie weiterhin einen Turm (02) umfasst, welcher von der Längsführung (17) getragen wird und welcher die Vertikalführung (18) trägt, wobei der Turm (02) in der die erste Rotationsachse und die zweite Rotationsachse umfassenden vertikalen Ebene angeordnet ist. 6. Cylindrical grinding machine according to claim 5, characterized in that it further comprises a tower (02) which is carried by the longitudinal guide (17) and which carries the vertical guide (18), the tower (02) in which the first axis of rotation and the second axis of rotation comprehensive vertical plane is arranged.
7. Rundschleifmaschine nach Anspruch 6, dadurch gekennzeichnet, dass der Turm (02) bezogen auf die erste Rotationsachse in axialer Richtung neben der Abrichteinheit (16) angeordnet ist, wobei sich die Abrichteinheit (16) zwischen dem Turm (02) und dem Reitstock (11) befindet. Rundschleifmaschine nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der Turm (02) eine mittlere Achse aufweist, welche vertikal ausgerichtet ist und bezogen auf die zweite Rotationsachse in axialer Richtung neben der Schleifscheibe (06) angeordnet ist. Rundschleifmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Werkstückspindelstock (08) einen Werkstückmotor (12) zum rotatorischen Antrieb des Werkstückes (09) umfasst, wobei der Werkstückmotor (12) fest auf dem Schwenktisch (07) montierbar ist. Rundschleifmaschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Abrichteinheit (16) in einer horizontalen Richtung quer zur ersten Rotationsachse verschiebbar auf dem Maschinenbett (03) gelagert ist. Rundschleifmaschine nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Abrichteinheit (16) mehrere Abrichtwerkzeuge umfasst, welche in einer horizontalen Ebene nebeneinander angeordnet sind, wobei die Abrichtwerkzeuge in einer horizontalen Richtung quer zur ersten Rotationsachse verschiebbar gelagert sind. Rundschleifmaschine nach Anspruch 11, dadurch gekennzeichnet, dass die Abrichteinheit (16) mindestens ein statisches Abrichtwerkzeug und mindestens ein dynamisches Abrichtwerkzeug umfasst. 21 7. Cylindrical grinding machine according to claim 6, characterized in that the tower (02) relative to the first axis of rotation in the axial direction next to the dressing unit (16) is arranged, the dressing unit (16) being located between the tower (02) and the tailstock (11). Cylindrical grinding machine according to Claim 6 or 7, characterized in that the tower (02) has a central axis which is aligned vertically and is arranged in the axial direction next to the grinding wheel (06) in relation to the second axis of rotation. Cylindrical grinding machine according to one of Claims 1 to 8, characterized in that the workpiece headstock (08) comprises a workpiece motor (12) for driving the workpiece (09) in rotation, the workpiece motor (12) being permanently mountable on the swivel table (07). Cylindrical grinding machine according to one of Claims 1 to 9, characterized in that the dressing unit (16) is mounted on the machine bed (03) so that it can be displaced in a horizontal direction transversely to the first axis of rotation. Cylindrical grinding machine according to one of Claims 1 to 10, characterized in that the dressing unit (16) comprises a plurality of dressing tools which are arranged next to one another in a horizontal plane, the dressing tools being mounted so as to be displaceable in a horizontal direction transverse to the first axis of rotation. Cylindrical grinding machine according to Claim 11, characterized in that the dressing unit (16) comprises at least one static dressing tool and at least one dynamic dressing tool. 21
13. Rundschleifmaschine nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass der Schwenktisch (07) an einem auf die erste Rotationsachse bezogenen axialen ersten Ende des Schwenktisches (07) in einem Schwenklager (13) gegenüber dem Maschinenbett (03) schwenkbar gelagert ist, wobei ein vertikaler Abstand zwischen einem auf die erste Rotationsachse bezogenen axialen zweiten Ende des Schwenktisches (07) und dem Maschinenbett (03) durch ein Verstellelement (14) definiert ist. 14. Rundschleifmaschine nach Anspruch 13, dadurch gekennzeichnet, dass das Maschinenbett (03) eine Grundplatte umfasst, auf welcher die Abrichteinheit (16) , das Schwenklager (13) und das Verstellelement (14) befestigt sind. 13. Cylindrical grinding machine according to one of Claims 1 to 12, characterized in that the pivoting table (07) is mounted pivotably in relation to the machine bed (03) in a pivot bearing (13) at an axial first end of the pivoting table (07) relative to the first axis of rotation , wherein a vertical distance between an axial second end of the swivel table (07) and the machine bed (03) relative to the first axis of rotation is defined by an adjusting element (14). 14. Cylindrical grinding machine according to claim 13, characterized in that the machine bed (03) comprises a base plate on which the dressing unit (16), the pivot bearing (13) and the adjustment element (14) are attached.
15. Rundschleifmaschine nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass Schwenktisch (07) um mindestens ±5° gegenüber dem Maschinenbett (03) schwenkbar ist . 15. Cylindrical grinding machine according to one of claims 1 to 14, characterized in that the swivel table (07) can be swiveled by at least ±5° relative to the machine bed (03).
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DE102014102938A1 (en) 2014-03-05 2015-09-10 Haas Schleifmaschinen Gmbh Processing machine, in particular grinding machine
DE102014115149B3 (en) * 2014-10-17 2016-01-21 Schaudt Mikrosa Gmbh Grinding machine, in particular compact designed centerless grinder
CH713162B1 (en) 2016-11-30 2020-07-15 Florian Haenni Grinding machine, in particular cylindrical grinding machine.

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WO2022101090A1 (en) 2022-05-19
EP4058237B1 (en) 2023-05-10
DE102020130004A1 (en) 2022-05-19

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