EP3310530A1 - Method and grinding machine for grinding external and internal contours of workpieces in one set-up - Google Patents

Method and grinding machine for grinding external and internal contours of workpieces in one set-up

Info

Publication number
EP3310530A1
EP3310530A1 EP16728343.1A EP16728343A EP3310530A1 EP 3310530 A1 EP3310530 A1 EP 3310530A1 EP 16728343 A EP16728343 A EP 16728343A EP 3310530 A1 EP3310530 A1 EP 3310530A1
Authority
EP
European Patent Office
Prior art keywords
grinding
machine component
tailstock
grinding wheel
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
EP16728343.1A
Other languages
German (de)
French (fr)
Other versions
EP3310530B1 (en
Inventor
Erwin Junker
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.)
Erwin Junker Maschinenfabrik GmbH
Original Assignee
Erwin Junker Maschinenfabrik 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 Erwin Junker Maschinenfabrik GmbH filed Critical Erwin Junker Maschinenfabrik GmbH
Publication of EP3310530A1 publication Critical patent/EP3310530A1/en
Application granted granted Critical
Publication of EP3310530B1 publication Critical patent/EP3310530B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02Machines 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
    • B24B5/12Machines 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 both externally and internally with several grinding wheels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/06Work supports, e.g. adjustable steadies
    • B24B41/061Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
    • B24B41/062Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs

Definitions

  • the invention relates to a method for grinding carried out in a workpiece with grinding to be ground outer and inner contours and a grinding machine in the manner of a universal cylindrical grinding machine and / or non-circular machine for performing the method.
  • the object of the present invention is to provide a grinding method and a grinding machine, with which workpieces both on its outer contour and on its inner contour can be ground with high accuracy, while maintaining the centered clamping during grinding.
  • the inventive method for grinding machining of a machine component takes place in one and the same clamping.
  • the machine component is preferably a gear shaft or a gear.
  • the machine component is tensioned at its two axial ends with respect to the longitudinal axis of the machine component and has an inner recess at least at one end.
  • the inner recess is ground by means of an inner grinding wheel, which is preferably also referred to as fnnenschleifjan.
  • the machine component is see a Maschinen Scientificspi ndelstock and a tailstock driven to rotate, wherein by means of at least one grinding wheel, the outer contour of the machine component is ground.
  • the machine component is therefore kept centered on the one side by means of the workpiece spindle nose and on the side opposite the tailstock with a tailstock hollow spindle on the end region of the inner recess pointing outwards towards the end of the machine component.
  • the tailstock hollow quill makes it possible for the inner grinding wheel to be penetrated during the grinding of the inner recess. Since the tailstock hollow quill preferably engages with a running hollow point in the inner recess of the machine component and the machine component is also centered on the opposite side in the workpiece headstock, the machine component can in a single clamping both outside and inside and possibly also to his front sides are sanded.
  • a tailstock hollow quill with hollow point or on the workpiece headstock a hollow point or - if the machine component has an inner recess at each of its ends - a tailstock hollow quill with hollow point as well as a workpiece spindle hollow quill are provided with hollow point, which can be penetrated by the respective inner grinding wheel, it is preferably possible that the outer grinding and the inner grinding at least temporarily performed zeitparailel the. This additionally has a cost-saving effect because it reduces the cycle time during the production of the machine component.
  • Vorzugswesse is maintained during grinding the reference axis for the machine component, ie its rotation longitudinal axis unchanged, because this coincides with the taking place at both ends of the machine component centering. Especially with parts of normal length and normal stiffness, a steady support is not required.
  • a grinding machine according to the prior art referred to in the introduction to the description according to DE 10 2007 009 843 B4 on the other hand, it is necessary to provide a steady rest during external grinding, to which a steady rest can be approached after completion of this seat at the corresponding point of the machine component, so that the machine component emigrates as little as possible from its previously defined centering of the clamping.
  • the workpiece headstock is equipped either with a centrically exciting chuck or with a chuck with compensating clamping jaws and a centering point engaging in the end face of the machine component.
  • the workpiece headstock has a workpiece Holstein Holstein quill, thus also from this side through the workpiece headstock, which then hollow is formed, the inner grinding wheel can grind the inner recess, without the clamping must be solved during grinding or for the purpose of internal grinding.
  • the internal grinding wheel with its spindle and the grinding wheel for external grinding are also arranged with their spindle on a common headstock and are brought by pivoting and / or method, in particular continuously engaged with the machine component or disengaged.
  • the respective spindles of the respective grinding wheels can be moved by a pivotable arrangement on a carriage for grinding the inner recess and for grinding the outer contour in a direction parallel to the longitudinal axis of the machine component.
  • the grinding wheel for external grinding is arranged on a wheelhead, which is then pivoted to Ineing riffprint this grinding wheel during external grinding on the workpiece and / or moved.
  • the inner grinding wheel is arranged on a separate wheelhead, preferably in the area of the tailstock, and can be moved relative to the longitudinal axis of the workpiece so that the inner grinding wheel, which is also referred to as inner grinding pin, the hollow tailstock hollow spindle with hollow point in the longitudinal direction of the machine partly passes through and thus grinds the inner recess. This ensures that the sharpening of the outer contour of the machine component and the inner surface of the inner recess can be performed at least temporarily parallel to time.
  • the rotational axis of the grinding wheel for the outer grinding and the common axis of rotation of the workpiece headstock, machine component and tailstock obliquely arranged in space to each other such that during grinding substantially only a point contact between the grinding wheel and the outer contour of the machine component is present.
  • the longitudinal feed is then preferably in the direction of the Werk Swissspi ndelstock out.
  • the oblique positioning of the axes in space to each other, which ensures the point-like contact between the grinding wheel and the outer contour of the machine component, is also referred to as Quickpoint loops.
  • both peripheral regions preferably rotationally symmetrical type, as well as end surfaces of the machine nenbauteils be ground.
  • the tailstock hollow quill is preferably designed to run along; however, it can also be powered.
  • the drive of the tailstock Hoh Ipi nole with the drive of the workpiece holder block on the opposite side in the sense of an electronic wave is matched to one another.
  • the grinding machining of the machine component is realized via CNC controls. This means that all movements of the machine component or the grinding tools are CNC-controlled.
  • a grinding machine in the manner of a universal round grinding machine and / or non-circular grinding machine is provided for carrying out the method described above.
  • the grinding machine has a grinding table, on which a workpiece headstock and a tailstock are arranged, which are movable in the longitudinal direction of the student table.
  • a machine component to be ground can be clamped between the workpiece spindle stock and the tailstock in such a way that the common longitudinal axis of the workpiece headstock, machine component and tailstock runs in the longitudinal direction of the grinding table.
  • the grinding table is fixedly mounted with respect to the machine bed and the wheel headstock and the grinding headstocks are parallel along the common longitudinal axis of the workpiece headstock, machine component and tailstock movable or are.
  • the workpiece headstock has either a centrically exciting chuck or a chuck with compensating releasable clamping jaws and a centering tip, which rotatably holds the machine component on the workpiece headstock. Both types of chuck ensure centering during clamping of the machine component on the workpiece headstock.
  • the tailstock has a tailstock hollow quill with a preferably mitlau- fenden hollow point in the manner of engaging in a chamfer of the inner recess engaging pin.
  • This hollow point engages in the inner recess of the machine component such that a centering engagement is ensured in such a way that this centering engagement is adapted to a rotationally symmetrical inner recess at least at the end of the machine component, which can be clamped on the tailstock, ie. H. at the end opposite the workhead.
  • the tailstock hollow quill and the hollow point have an inner bore which is large enough that the inner grinding wheel can grasp the inner bore of the inner recess, ie the inner surface of the inner recess, the inner bore of the hollow spindle and the hollow point.
  • the inner grinding wheel can now be arranged with its inner grinding spindle either on the wheelhead, which can be pivoted and moved so that the inner grinding wheel can pass through the inner bore of the tailstock hollow pinole and grind the ĂȘtaus- perception accordingly.
  • the disadvantage of such an arrangement is that external grinding and internal grinding must be carried out one after the other.
  • a separate grinding bench headstock is arranged in the area of the tailstock and carries the inner grinding wheel with its inner grinding spindle. The delivery of the inner grinding wheel in
  • the grinding machine according to the invention preferably has both a pivotable wheelhead and a grinding spindle bearing an internal grinding wheel as well as the separate wheelhead as an additional wheelhead.
  • the workpiece holder peg and the tailstock are movable relative to each other such that the machine component is held and rotated between the centering point on the workpiece holder peg or the centrically tensioning chuck provided there and the hollow point on the tailstock under axial pressure and with an unchanging reference axis is.
  • the grinding machine according to the invention therefore permits external grinding and internal grinding, which run at least temporarily parallel to time. Since the grinding on the grinding machine according to the invention takes place in one and the same clamping, the reference axis is not changed during grinding, whereby a higher accuracy of machine components ground with the grinding machine according to the invention is achieved.
  • a vertically movable to the longitudinal direction of the grinding table movable carriage is provided, on which a pivotable about a vertical pivot axis grinding headstock is arranged.
  • the grinding wheel driven for rotation can be brought into grinding engagement with this grinding wheel head, the grinding wheel being mounted on the grinding headstock for grinding the outer contour with a horizontal axis of rotation.
  • the grinding wheel has an abrasive coating both on its circumference and on its end surface. It is thus possible with the grinding machine according to the invention to grind cylindrical outer contours as well as plane surfaces or cones on the machine component, possibly even by means of plunge grinding, without the need for loosening the clamping.
  • the inner grinding wheel as well as the grinding wheel for the outer contour are each provided with a CBN coating.
  • the CBN coating ensures high grinding accuracy, high grinding removal and nevertheless long service life of the grinding wheels.
  • the chuck is preferably hollow so that this inner recess on the workpiece spindle end of the machine component can pass through this hollow bore of the chuck by means of a further inner grinding wheel for grinding.
  • This further inner grinding wheel is preferably arranged on a further separate inner grinding headstock, so that this further inner grinding wheel can be moved and delivered independently of the grinding headstock for the outer contour. Even with internal recesses at both ends of the machine component, a time-parallel grinding of both the outer contour and the inner contours with the grinding machine according to the invention can therefore be realized.
  • FIG. 1 shows a top view of a grinding machine according to the invention
  • FIG. 2 a grinding machine corresponding in basic construction, FIG. 1, but with an additional internal grinding headstock
  • FIG. 3 shows a partial view of the grinding machine according to the invention with grinding spindle pivoted into the outer grinding of the machine component with outer grinding wheel;
  • FIG. 4 shows a partial view of a grinding machine with pivoted grinding spindle with inner grinding wheel
  • FIG. 5 detailed view of the machine component tensioned in the workpiece headstock with chuck and tension with tailstock hollow spindle with internal grinding wheel disengaged
  • FIG. 6 shows a detailed view according to FIG. 5 with inner grinding wheel in engagement with the inner recess of the machine component
  • FIG. 7 shows a basic plan view of a grinding machine according to the invention with two
  • FIG. 8 shows a detail view of the grinding machine according to the invention with two inner grinding spindles for inner recesses provided on both sides on the machine component; and 9 shows a basic arrangement of a machine component in the form of a toothed wheel, which is ground according to the method of the invention.
  • the grinding machine shown in plan view in FIG. 1 is fundamentally ajar to the structure of a universal round and / or non-circular grinding machine with respect to its basic construction.
  • a conventionally provided grinding table 28 is guided in the direction of a so-called Z-axis on a machine bed 27 longitudinally displaceable.
  • a workpiece headstock 9 with its (not designated) drive motor and a chuck 11 is mounted on the grinding table 28 .
  • the chuck 11 is used for clamping the workpiece, ie the machine component 2.
  • the machine component by means of a Zentrierspit- ze 13 and releasable clamping jaws 12 of the chuck 11 is tensioned.
  • a tailstock 10 is arranged at an axial distance therefrom.
  • the tailstock 10 has a separately executed Quill for receiving a designed as a tailstock hollow quill 15 tailstock tip.
  • the tailstock 10 is also arranged on the sliding table 28, so that the machine component 2 is usually clamped between the workpiece headstock 9 and the tailstock 10 on a common axis of rotation, the longitudinal axis 1 of the machine component 2.
  • For process monitoring measuring devices 23.1, 23.2 and 23.3 are provided in the grinding machine, which are used for measuring the outer and / or inner diameter.
  • the measuring signals obtained by the measuring devices serve to monitor and control the grinding machine by feeding the measuring signals directly to the control of the grinding machine in the usual way.
  • a dressing device 29 which serves for dressing the grinding wheels present on the grinding machine. Also drawn in is a steady rest 22 which partially engages around the circumference of the machine component during active use and is provided only when the machine component is relatively long in order to compensate for the grinding forces introduced by grinding wheels during grinding of the outer contour.
  • a bezel at the end portion of the machine component for internal grinding purposes, as required in the prior art, is not required. It is only optional and serves only to avoid the deflection of a relatively long machine component, which may possibly be caused by grinding forces. For shorter components, which have sufficient flexural rigidity, the bezel is dispensable.
  • the grinding machine has a grinding spindle holder 18, which has a grinding spindle 25 with an inner grinding wheel 8, a grinding spindle 26.1 with a first outer grinding wheel 16.1 and a grinding spindle 26.2 with a second outer grinding wheel 16.2 having. Ie.
  • the three grinding spindles 25, 26.1 and 26.2 are all on the common
  • the Sch Seifspindelstock 18 is pivotable about a pivot axis 24 and arranged on a carriage 19.1.
  • the slide 19.1 in turn is perpendicular to the common axis of rotation, ie the longitudinal axis 1, arranged displaceably.
  • the displaceability of the carriage 19.1 thus takes place in the direction of the usual X-axis.
  • the pivoting movement of the wheelhead 18 is characterized by the curved double arrow B.
  • the displacement movement of the carriage 19.1 is indicated by the straight double arrow X.
  • Z the sliding movement in the direction of the longitudinal axis 1 of the machine component 2 is indicated, while C denotes the rotation of the machine component about the common axis of rotation, ie longitudinal axis.
  • the grinding headstock 18 By pivoting the grinding headstock 18, the respectively required for machining grinding wheels, ie the inner grinding disc 8, the first outer grinding disc 16.1 and the second outer grinding disc 16.2, brought to perform their respective grinding task in engagement with the machine component 2.
  • the outer contour and the inner contour of the machine component 2 are ground one after the other, since the common grinding of all grinding wheels with their grinding spindles on a wheelhead 18 can only be performed successively. In any case, however, the machine component remains clamped in one and the same clamping at one and the same centering in the grinding machine according to the invention, both for the grinding of the outer contour and the grinding of the inner contour.
  • the first outer grinding wheel 16.1 serves to grind the outer contour of the machine component 2.
  • the grinding spindle 25 carries the inner grinding wheel 8, which has a small diameter and serves to grind the rotationally symmetrical inner recess 6 of the machine component 2 by the inner grinding wheel 8 passing through the tailstock hollow spindle 15. Because of the small diameter of the inner grinding wheel 8, this is also referred to as a grinding pin. To carry out the method according to the invention, it is sufficient if only the inner grinding spindle 25 with the inner grinding wheel 8 and the grinding spindle 26.2 with the outer grinding wheel 16.2 are provided.
  • the grinding spindle 26.1 which is also still arranged on the grinding headstock 18, with its outer grinding wheel 16.1 can be used for further machining operations on the machine component, for example in order to grind further circumferential and end faces or recesses.
  • the coolant is passed directly through the tailstock Hohipinole 15 to the inner surface of the inner recess 6, with which the inner grinding wheel when grinding the inner recess 6 is engaged. This makes it possible for the coolant to be guided directly and directly in an optimum manner to the grinding area.
  • FIG. 2 shows a schematic representation of a grinding machine according to the invention in plan view, which substantially corresponds to the grinding machine according to FIG. 1.
  • the same reference numerals refer to the same components or components.
  • the grinding machine according to FIG. 2 has an additional inner grinding headstock 30 in the area of the tailstock 10.
  • This mecanicschleifspindelstock 30 is also disposed on the machine bed 27 and carries in the manner of another, second carriage 19.2 another inner grinding spindle 31, which carries a further inner grinding wheel 32.
  • the further internal grinding spindle 31 is mounted on the carriage 19.2 in the Z2 direction, i. H.
  • the carriage 19.2 can be moved in the X2 direction, so that the feed for grinding in the inner recess can be adjusted accordingly.
  • Fig. 3 shows a detailed view of the basic structure of the grinding machine according to the invention according to FIG. 1.
  • the machine component 2 is with respect to its longitudinal axis 1 between the tips on the workpiece headstock 9 in the chuck 11 with the jaws 12 and the centering tip 13 and the tailstock 10 by means of Tailstock Hohipinole 15 and the mitt Sugar- hollow point 20 stretched. This clamping between the tips is maintained during the entire processing.
  • the machine component 2 has in its left half a circumferential collar, which has plan faces facing the workpiece headstock 9 and the tailstock hoisting dinette 15.
  • the machine component 2 has a shoulder, which likewise forms a plane side.
  • the grinding spindle 26 is pivoted with the outer grinding wheel 16 for external grinding in the direction of the workpiece.
  • the outer grinding wheel 16 By means of the outer grinding wheel 16, the entire cylindrical outer contour 17 of the machine component 2 is ground.
  • the outer grinding wheel 16 is designed such that it can also grind the plan sides on the machine component 2 with its end faces.
  • the outer grinding side 16 is delivered over the X-axis to the outer contour 17 of the machine component 2, so that the outer grinding can be carried out by means of this outer grinding wheel 16.
  • the plan sides of the rotating collar as well as the plan side of the shoulder in the region of the workpiece headstock 9 can be ground. This makes it possible to grind the entire outer contour of the machine component 2.
  • the tailstock 10 is not equipped with the commonly performed quill, but has a very short sleeve mounted, which is hollow drilled inside.
  • a hollow point 20 is provided which represents the tailstock tip and which engages in phases provided in the end-side end region of the machine component 2 such that the machine component 2 faces the tailstock 10 with respect to its longitudinal axis 1 End centered with respect to the longitudinal axis 1 is clamped.
  • the hollow bore of the riding-stick height Ipinole 15 makes it possible for a grinding wheel (not shown) to reach through the hollow bore into the region of the inner recess 6 of the machine component 2 in order to carry out the machining of the inner recess there.
  • FIG. 4 shows a grinding machine in detail view and plan view according to the representation of FIG. 1, in which the inner recess 6 on the machine component 2 is ground.
  • the machine component 2 is in turn held centrically at its sinking end in the workpiece headstock 9 by means of the chuck 11 and the clamping jaw 12 and the centering point 13.
  • the machine component 2 is on the opposite end 5 in the hooping stick 10 with its tailstock hollow quill 15 likewise centrally spanned via the hollow tip 20 running therein, in such a way that the longitudinal axis 1 of the machine component 2 forms its axis of rotation.
  • the outer contour 17 of the machine component was ground in the manner described in connection with FIG. 3.
  • the inner grinding wheel 8 with its mecanical nuances which is mounted on the grinding headstock 18 and pivotable about its pivot axis 24, pivoted through the hollow bore of the tailstock hollow quill 15 in the recess 6 of the machine part 2 and there in Looping brought.
  • the inner grinding spindle 25 in addition to the pivoting of the inner grinding spindle 25 about the pivot axis 24 of the wheelhead 18 along the X-axis in the inner recess can be brought into looping engagement.
  • the inner grinding wheel 8 through the grinding rod Hoh Ipinole 15 this in the Z direction so moved that the inner grinding wheel 8 through the hollow bore of the tailstock hollow quill 15 in the inner recess 6 of the machine component 2 can be passed.
  • the tailstock 10 is mounted very short, ie built short in axial alignment, and - as described - hollow drilled inside. During internal grinding, the machine component 2 remains clamped between the tips. 5 shows an enlarged detail view of the machine component 2, which is clamped centrally in the chuck 11 in the clamping jaws 12 by means of the centering tip 13 on the longitudinal end face 14 of the machine component 2. At the opposite end 5 of the machine component 2, the revolving hollow point 20 of the tailstock hollow quill 15 serves for the total centric clamping of the machine component 2.
  • an embodiment is shown in which the outer contour 17 is ground by means of the outer grinding wheel 16 on the grinding spindle 18, not shown, whereas the inner grinding spindle 8 mounted on the mecanicsch spindle 8 through the hollow bore of the tailstock Hollow quill 15 in the inner recess 6 for grinding of the inner peripheral surface 7 can be passed.
  • the inner grinding wheel 8 is in a position even before passing through the hollow bore of the tailstock hollow quill 15.
  • the inner grinding spindle 25 with the inner grinding wheel 8 in the form of an abrasive pin is on a separate rĂ©elleschleifspindelstock (not shown) in the Z direction, d. H. in the direction of the longitudinal axis 1, and in the X direction, d. H. in the direction of a looping engagement on the peripheral surface 7 of the ĂȘtausneh- 6 deliverable.
  • the bearing of the tailstock hollow quill 15 is provided with high-precision spindle bearings, wherein the revolving hollow tip 20 runs along with the machine component 2 by the friction caused by the clamping forces in the center.
  • the revolving hollow point 20 acts on an inner surface at the opposite end 5 of the machine component 2 in a sealing or positive-locking manner.
  • centering clamping by means of a standing tip, d. H. a non-revolving tip, the machining is performed on the machine component 2.
  • the tailstock hollow quill 15 is designed as a hydrodynamic or hydrostatic bearing.
  • the supply of cooling lubricant takes place on the side of the workpiece headstock 9 through the centering tip 13 of the chuck 11 therethrough.
  • the cooling lubricant it is possible for the cooling lubricant to pass reliably from the side of the workpiece headstock to the inner recess 6 for its grinding by means of the inner grinding wheel 8.
  • the inner grinding wheel 8 has a conical attachment on its front end, which serves to supply the cooling lubricant directly to the grinding engagement.
  • Reliable lubrication is particularly important in internal grinding because there As a result, the engagement area of the grinding wheel on the peripheral surface 7 of the inner recess 6 is larger than would be the case in the external grinding of a cylindrical or even non-cylindrical surface.
  • Fig. 6 shows a view according to FIG. 5, in which, however, the inner grinding wheel 8 has been brought by the hollow bore of the tailstock hollow quill 15 in the inner recess 6 of the machine component 2 in grinding engagement with its peripheral surface 7.
  • the other components or components denoted by corresponding reference numerals correspond to those in accordance with FIG. 5 and will therefore not be explained again in more detail here.
  • Fig. 7 shows a further embodiment of a grinding machine according to the invention, in which on the machine bed 27, two separate grinding headstocks 18.1, 18.2 are shown.
  • the two grinding spindle sticks 18.1, 18.2 each carry an outer grinding wheel 16.1 or 16.2 and an inner grinding wheel 8.1 with associated inner grinding spindle 25.1 or 8.2 with associated inner grinding spindle 15.2.
  • the wheelhead 18.1 is pivotable about a pivot axis B1, which is characterized by the double arrow.
  • the wheelhead 18.2 is pivotable about a pivot axis B2, which is also characterized by the double arrow.
  • the grinding spindle sticks 18.1 and 18.2 can be added in the X1 or X2 axis direction as well as in the Z1 or Z2 direction in the direction of the longitudinal axis 1 of the machine component 2.
  • FIG. 8 the basic arrangement of FIG. 7 is shown in an enlarged view, but only the two inner grinding discs 8.2 with associated inner grinding spindle 25.2 and inner grinding disc 8.1 with associated mecanicschleifspindel 25.1 for insertion through the respective hollow holes of the workpiece headstock 9.1 and the tailstock 10th ready.
  • the drive or drive motor 33 realized via belts, in particular toothed belts, is provided in addition to the constructively short bearing of this hollowly formed workpiece headstock 9.1.
  • the possible at least partially time-parallel processing of the outer and inner contours of the machine component 2 to be ground takes place in the order and manner described above in connection with the other figures.
  • FIG. 9 shows a simplified example of an embodiment for grinding a machine component 2, which - unlike in FIGS. 1 to 8 - is not a shaft part but a gear component.
  • the corresponding grinding headstocks are not shown for the sake of simplicity.
  • the centered clamping of this gear component takes place in that the chuck 11 with its clamping jaws 12 spans the gear on its outer toothing.
  • To achieve an exact alignment plan attacks are still provided on the chuck 11, against which the gear is clamped.
  • an unambiguous and for the entire processing fixed orientation of the reference axis, namely the longitudinal axis 1, the gear 2 realized.
  • profiled outer grinding wheel 16.1 which is rotatably driven driven on a corresponding grinding spindle 26.1
  • profiled outer sections are ground on the hub portion of the gear.
  • an inner grinding wheel 8 which is mounted rotatably driven on its associated inner grinding spindle 21, is provided, which can be retracted on a separate wheelhead via the Z3 axis in the hub bore, so that the hub bore at least parallel to the outer contour via a delivery can be ground along the X3 axis.
  • an additional (not shown) grinding headstock is provided, which carries a grinding wheel 16.2 with associated spindle 26.2.
  • the outer grinding wheel 16.2 is a profiled grinding wheel and serves to grind the face sides on the collar or on the hub of the toothed wheel 2.
  • This toothed wheel can also be ground in time, both at its outer contour and at its inner contour, at least temporarily according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Gripping On Spindles (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

What is described is a method and a grinding machine for implementing the method, in which a machine component (2) to be machined which is clamped at its two ends (3, 5) and has an internal recess (6) to be ground is ground in a single set-up. The internal recess (6) is ground by an internal grinding disc (8), wherein the machine component (2) is held so as to be rotationally driven in its set-up between a workpiece headstock (9) and a tailstock (10) and is additionally ground on its external contour (17) by means of a grinding disc (16). The machine component (2) is held in a centring manner on the tailstock (10) by a tailstock hollow sleeve (15) with a hollow centre (20) at the end region of the internal recess (6), wherein the internal grinding disc (8) engages through the tailstock hollow sleeve (15) and the hollow centre (20) during the grinding of the internal recess (6). In the case of the grinding machine according to the invention, a separate grinding headstock is preferably provided in the region of the tailstock (10) and bears the internal grinding disc (8), which in turn can be advanced to the circumferential surface of the internal recess (6) by engaging through the tailstock hollow sleeve (15) and the hollow centre (20).

Description

VERFAHREN UND SCHLEIFMASCHINE ZUM SCHLEIFEN VON AUSSEN- UND INNENKON- TUREN VON WERKSTÜCKEN IN EINER AUFSPANNUNG  METHOD AND GRINDING MACHINE FOR GRINDING EXTERNAL AND INTERNAL CONTOURS OF WORKPIECES IN ONE VOLTAGE
Die Erfindung betrifft ein Verfahren zur in einer Aufspannung durchgefĂŒhrten Schleifbearbeitung eines WerkstĂŒckes mit zu schleifenden Außen- und Innenkonturen sowie eine Schleifmaschine nach Art einer Universal-Rundschleifmaschine und/oder Unrundmaschine zur DurchfĂŒhrung des Verfahrens. The invention relates to a method for grinding carried out in a workpiece with grinding to be ground outer and inner contours and a grinding machine in the manner of a universal cylindrical grinding machine and / or non-circular machine for performing the method.
Aus DE 10 2007 009 843 B4 ist bereits bekannt, sowohl die Außenkontur als auch die Innen- kontur eines WerkstĂŒckes zu schleifen. Zum einen sind dabei mehrere SpannzustĂ€nde erforder- fleh, damit auch das Innenschfeifen nach erfolgtem Außenschlerfen gegebenfails sogar auf se- paraten Maschinen realisiert werden kann. Zum anderen ist fĂŒr das Schleifen der Innenkontur das AbstĂŒtzen mittels einer LĂŒnette nach zuvor erfolgtem Schleifen eines LĂŒnettensitzes erfor- derlich. Dieses bekannte Schleifverfahren und die zur Realisierung dieses Schleifverfahrens bekannte Schleifmaschine sind relativ komplex und weisen BeschrĂ€nkungen bei der erzielbaren Genauigkeit dadurch auf, dass das WerkstĂŒck in verschiedene SpannzustĂ€nde gebracht werden muss, damit sĂ€mtlich Schleifvorgange an dem WerkstĂŒck geschliffen werden können. From DE 10 2007 009 843 B4 it is already known to grind both the outer contour and the inner contour of a workpiece. On the one hand, several clamping states are required in order to ensure that internal grinding can also be achieved even after separate outdoor use, even on separate machines. On the other hand, for the grinding of the inner contour, support by means of a steady rest after previously grinding a steady rest seat is required. This known grinding method and the grinding machine known for implementing this grinding method are relatively complex and have limitations on the achievable accuracy in that the workpiece must be brought into different clamping states, so that all grinding operations on the workpiece can be ground.
DemgegenĂŒber besteht die Aufgabe der vorliegenden Erfindung darin, ein Schleifverfahren und eine Schleifmaschine bereitzustellen, mit welchem WerkstĂŒcke sowohl an ihrer Außenkontur als auch an ihrer Innenkontur mit hoher Genauigkeit geschliffen werden können, und zwar unter Beibehaltung der zentrierten Aufspannung wĂ€hrend der Schleifbearbeitung. In contrast, the object of the present invention is to provide a grinding method and a grinding machine, with which workpieces both on its outer contour and on its inner contour can be ground with high accuracy, while maintaining the centered clamping during grinding.
Diese Aufgabe wird durch ein Verfahren mit den Merkmalen gemĂ€ĂŸ Anspruch 1 und durch eine Schleifmaschine mit den Merkmalen gemĂ€ĂŸ Anspruch 14 gelöst ZweckmĂ€ĂŸige Weiterbildungen sind in den jeweiligen abhĂ€ngigen AnsprĂŒchen definiert. This object is achieved by a method having the features according to claim 1 and by a grinding machine having the features according to claim 14. Expedient developments are defined in the respective dependent claims.
Das erfindungsgemĂ€ĂŸe Verfahren fĂŒr eine Schleifbearbeitung eines Maschinenbauteils, das um seine LĂ€ngsachse zur Rotation angetrieben ist, erfolgt in ein und derselben Aufspannung. Das Maschinenbauteil ist dabei vorzugsweise eine Getriebewelle oder auch ein Zahnrad. Das Ma- schinenbauteil wird an seinen beiden bezĂŒglich der LĂ€ngsachse des Maschinenbauteils axialen Enden gespannt und weist zumindest an seinem einen Ende eine Innenausnehmung auf. Die Innenausnehmung wird mittels einer Innenschleifscheibe geschliffen, welche vorzugsweise auch als fnnenschleifstift bezeichnet wird. In seiner Aufspannung wird das Maschinenbauteil zwi- sehen einem WerkstĂŒckspi ndelstock und einem Reitstock drehend angetrieben gehalten, wobei mittels zumindest einer Schleifscheibe die Außenkontur des Maschinenbauteils geschliffen wird. Das Maschinenbauteil wird also auf der einen Seite mittels des WerkstĂŒckspindefstockes und auf der diesem gegenĂŒberliegenden Seite am Reitstock mit einer Reitstock-Hohlpinole am nach außen zum Ende des Maschinenbauteils hinweisenden Endbereich der Innenausnehmung zent- rierend gehalten. Die Reitstock-Hohlpinole ermöglicht es, dass die Innenschleifscheibe wĂ€hrend des Schleifens der Innenausnehmung durchgriffen wird. Da die Reitstock-Hohlpinole vorzugs- weise mit einer mitlaufenden Hohlspitze in die Innenausnehmung des Maschinenbauteils ein- greift und das Maschinenbauteil an der gegenĂŒberliegenden Seite im WerkstĂŒckspindelstock ebenfalls zentrierend gehalten wird, kann das Maschinenbauteil in einer einzigen Aufspannung sowohl außen als auch innen und gegebenenfalls auch an seinen Stirnseiten geschliffen wer- den. Weil das Schleifen in einer Aufspannung erfolgt, ergibt sich also fĂŒr die verschiedenen SchleifvorgĂ€nge, welche mit unterschiedlichen Schleifscheiben realisiert werden, kein Bezugs- wechsel. Dadurch kann die Schleifgenauigkeit fĂŒr das Maschinenbauteil weiter erhöht werden. Vor allen Dingen sind sĂ€mtliche Außenkonturen wie auch die Innenkonturen auf ein und diesel- be Zentrierung, d. h. die RotationslĂ€ngsachse des Maschinenbauteils, bezogen. Dadurch wer- den auch Rundlauffehler weiter minimiert. The inventive method for grinding machining of a machine component, which is driven about its longitudinal axis for rotation, takes place in one and the same clamping. The machine component is preferably a gear shaft or a gear. The machine component is tensioned at its two axial ends with respect to the longitudinal axis of the machine component and has an inner recess at least at one end. The inner recess is ground by means of an inner grinding wheel, which is preferably also referred to as fnnenschleifstift. In its clamping, the machine component is see a WerkstĂŒckspi ndelstock and a tailstock driven to rotate, wherein by means of at least one grinding wheel, the outer contour of the machine component is ground. The machine component is therefore kept centered on the one side by means of the workpiece spindle nose and on the side opposite the tailstock with a tailstock hollow spindle on the end region of the inner recess pointing outwards towards the end of the machine component. The tailstock hollow quill makes it possible for the inner grinding wheel to be penetrated during the grinding of the inner recess. Since the tailstock hollow quill preferably engages with a running hollow point in the inner recess of the machine component and the machine component is also centered on the opposite side in the workpiece headstock, the machine component can in a single clamping both outside and inside and possibly also to his front sides are sanded. Because the grinding takes place in one clamping, there is thus no change of reference for the various grinding processes which are realized with different grinding wheels. As a result, the grinding accuracy for the machine component can be further increased. Above all, all outer contours as well as the inner contours are related to one and the same centering, ie the rotational longitudinal axis of the machine component. As a result, concentricity errors are further minimized.
Aufgrund der Tatsache, dass entweder am Reitstock eine Reitstock-Hohlpinole mit Hohlspitze oder am WerkstĂŒckspindelstock eine Hohlspitze oder - sofern das Maschinenbauteil an jedem seiner Enden eine Innenausnehmung aufweist - eine Reitstock-Hohlpinole mit Hohlspitze wie auch eine WerkstĂŒckspindelstock-Hohlpinole mit Hohlspitze vorgesehen sind, welche durch die jeweilige Innenschleifscheibe durchgriffen werden können, ist es vorzugsweise möglich, dass das Außenschleifen und das Innenschleifen zumindest zeitweise zeitparailel durchgefĂŒhrt wer- den. Dies hat zusĂ€tzlich einen kostensparenden Effekt, weil dadurch die Taktzeit bei der Her- stellung des Maschinenbauteils verringert wird. Due to the fact that either a tailstock hollow quill with hollow point or on the workpiece headstock a hollow point or - if the machine component has an inner recess at each of its ends - a tailstock hollow quill with hollow point as well as a workpiece spindle hollow quill are provided with hollow point, which can be penetrated by the respective inner grinding wheel, it is preferably possible that the outer grinding and the inner grinding at least temporarily performed zeitparailel the. This additionally has a cost-saving effect because it reduces the cycle time during the production of the machine component.
Vorzugswesse wird wĂ€hrend der Schleifbearbeitung die Bezugsachse fĂŒr das Maschinenbauteil, d. h. dessen RotationslĂ€ngsachse unverĂ€ndert beibehalten, weil diese mit der an beiden Enden des Maschinenbauteils erfolgenden Zentrierung zusammenfĂ€llt. Vor allen Dingen bei Baufeilen normaler LĂ€nge und normaler Steifigkeit ist eine LĂŒnettenabstĂŒtzung nicht erforderlich. Bei einer Schleifmaschine gemĂ€ĂŸ dem in der Beschreibungseinleitung in Bezug genommenen Stand der Technik gemĂ€ĂŸ DE 10 2007 009 843 B4 ist es dagegen erforderlich, beim Außenschleifen einen LĂŒnettensitz vorzusehen, an welchen nach Fertigstellung dieses Sitzes an die entsprechende Stelle des Maschinenbauteils eine LĂŒnette angefahren werden kann, damit das Maschinenbau- teil möglichst wenig aus seiner zuvor festgelegten Zentrierung der Aufspannung auswandert. Erst nach erfolgter LĂŒnettenabstĂŒtzung kann ein Innenschleifen der an den Stirnseiten bzw. an der Stirnseite des Maschinenbauteils vorhandenen Ausnehmung vorgenommen werden. Ge- mĂ€ĂŸ vorliegender Erfindung soll unter .ohne LĂŒnttenabstĂŒtzung" verstanden werden, dass eine LĂŒ nette zum Zwecke des ZugĂ€nglichmachens der Innenausnehmung, um diese schleifen zu können, weil dazu gemĂ€ĂŸ dem Stand der Technik die Aufspannung am Reitstock gelöst werden musste, nicht mehr erforderlich ist. Es versteht sich jedoch, dass bei besonders langen Bautei- len LĂŒnetten durchaus vorgesehen sein können, nĂ€mlich ĂŒber die LĂ€nge des Bauteils so verteilt, dass bei der Bearbeitung der Außenkontur und der damit verbundenen eingebrachten Schleif- krĂ€fte eine Deformation des Maschinenbauteils bezĂŒglich von dessen LĂ€ngsachse verhindert oder minimiert wird. Zum Zwecke des Schleifens der Innenausnehmung ist allerdings wegen der vorhandenen Hohlspitzen bzw. Hohlpinolen eine spezielle LĂŒnettenabstĂŒtzung nicht erforderlich. Vorzugswesse is maintained during grinding the reference axis for the machine component, ie its rotation longitudinal axis unchanged, because this coincides with the taking place at both ends of the machine component centering. Especially with parts of normal length and normal stiffness, a steady support is not required. In a grinding machine according to the prior art referred to in the introduction to the description according to DE 10 2007 009 843 B4, on the other hand, it is necessary to provide a steady rest during external grinding, to which a steady rest can be approached after completion of this seat at the corresponding point of the machine component, so that the machine component emigrates as little as possible from its previously defined centering of the clamping. Only after the lunette support can be an internal grinding of the front sides or at the front of the machine component existing recess are made. According to the present invention, it is to be understood by "without support for lunettes" that a lug for the purpose of making the inner recess accessible in order to be able to grind it, because according to the prior art the clamping on the tailstock had to be loosened, is no longer necessary It goes without saying, however, that for very long components, steady rests can certainly be provided, namely so distributed over the length of the component that during machining of the outer contour and the associated grinding forces introduced a deformation of the machine component with respect to its longitudinal axis However, for the purpose of grinding the inner recess, a special LĂŒnettenabstĂŒtzung is not required because of the existing hollow points or Hohlpinolen.
Damit am WerkstĂŒckspindelstock auch eine wirksame Zentrierung des Maschinenbauteils reali- siert werden kann, ist der WerkstĂŒckspindelstock entweder mit einem zentrisch spannenden Spannfutter oder mit einem Spannfutter mit ausgleichenden Spannbacken und einer in die Stirnseite des Maschinenbauteils eingreifenden Zentrierspitze ausgestattet. Es ist jedoch auch möglich, dass fĂŒr den Fall, dass das Maschinenbauteil auf der Seite des WerkstĂŒckspindelsto- ckes ebenfalls eine Innenausnehmung aufweist, der WerkstĂŒckspindelstock eine Werk- stĂŒckspindeistock-Hohlpinole mit Hohlspitze aufweist, damit auch von dieser Seite durch den WerkstĂŒckspindelstock, welcher dann hohl ausgebildet ist, die Innenschleifscheibe die Innen- ausnehmung schleifen kann, und zwar ohne dass die Aufspannung wĂ€hrend des Schleifens oder zum Zwecke des Innenschleifens gelöst werden muss. So that an effective centering of the machine component can also be realized on the workpiece headstock, the workpiece headstock is equipped either with a centrically exciting chuck or with a chuck with compensating clamping jaws and a centering point engaging in the end face of the machine component. However, it is also possible that in the event that the machine component on the side of the WerkstĂŒckspindelsto- ckes also has an inner recess, the workpiece headstock has a workpiece Holstein Holstein quill, thus also from this side through the workpiece headstock, which then hollow is formed, the inner grinding wheel can grind the inner recess, without the clamping must be solved during grinding or for the purpose of internal grinding.
GemĂ€ĂŸ einem bevorzugten AusfĂŒhrungsbeispiel sind die Innenschleifscheibe mit ihrer Spindel und die Schleifscheibe zum Außenschleifen ebenfalls mit ihrer Spindel auf einem gemeinsamen Spindelstock angeordnet und werden durch Verschwenken und/oder Verfahren insbesondere stufenlos in Eingriff mit dem Maschinenbauteil oder außer Eingriff davon gebracht. Die jeweili- gen Spindeln der jeweiligen Schleifscheiben können durch eine schwenkbare Anordnung auf einem Schlitten zum Schleifen der Innenausnehmung und zum Schleifen der Außenkontur in einer Richtung parallel zur LĂ€ngsachse des Maschinenbauteiis verfahren werden. According to a preferred embodiment, the internal grinding wheel with its spindle and the grinding wheel for external grinding are also arranged with their spindle on a common headstock and are brought by pivoting and / or method, in particular continuously engaged with the machine component or disengaged. The respective spindles of the respective grinding wheels can be moved by a pivotable arrangement on a carriage for grinding the inner recess and for grinding the outer contour in a direction parallel to the longitudinal axis of the machine component.
GemĂ€ĂŸ einem weiteren AusfĂŒhrungsbeispiel der Erfindung ist die Schleifscheibe fĂŒr das Außen- schleifen auf einem Schleifspindelstock angeordnet, welcher dann zum Ineing riffbringen dieser Schleifscheibe beim Außenschleifen an das WerkstĂŒck herangeschwenkt und/oder verfahren wird. DarĂŒber hinaus ist die Innen Schleifscheibe auf einem separaten Schleifspindelstock, vor- zugsweise im Bereich des Reitstockes, angeordnet und kann relativ zur LĂ€ngsachse des Werk- stĂŒckes so verfahren werden, dass die Innenschleifscheibe, welche auch als Innenschleifstift bezeichnet wird, die Reitstock-Hohlpinole mit Hohlspitze in LĂ€ngsrichtung des Maschinenbau- teils durchgreift und die Innenausnehmung somit schleift. Damit ist gewĂ€hrleistet, dass das Schielfen der Außenkontur des Maschinenbauteils und der inneren OberflĂ€che der innenaus- nehmung zumindest zeitweise zeitparallel durchgefĂŒhrt werden können. GemĂ€ĂŸ noch einer Weiterbildung sind beim Schleifen der Außenkontur des Maschinenbauteils die Rotationsachse der Schleifscheibe fĂŒr das Außenschleifen und die gemeinsame Drehachse von WerkstĂŒckspindelstock, Maschinenbauteil und Reitstock schiefwinklig im Raum zueinander derartig angeordnet, dass beim Schleifen im Wesentlichen nur eine punktförmige BerĂŒhrung zwischen der Schleifscheibe und der Außenkontur des Maschinenbauteils vorliegt. Der LĂ€ngs- Vorschub erfolgt dann vorzugsweise in Richtung auf den WerkstĂŒckspi ndelstock hin. Das schiefwinklige Anordnen der Achsen im Raum zueinander, welches die punktförmige BerĂŒhrung zwischen der Schleifscheibe und der Außenkontur des Maschinenbauteils gewĂ€hrleistet, wird auch als Quickpoint-Schleifen bezeichnet. Es ist jedoch vorzugsweise auch möglich, dass beim Schleifen der Außenkontur des Maschi- nenbauteils die Rotationsachse der Schleifscheibe und die gemeinsame Drehachse von Werk- stĂŒckspindelstock, Maschinenbautei! und Reitstock parallel oder winklig in der Ebene zueinan- der verlaufen, so dass im Wesentlichen eine linienförmige BerĂŒhrung zwischen der Schleif- scheibe und der Außenkontur des Maschinenbauteils gewĂ€hrleistet ist. Dies ist dann von Vorteil, wenn im Sinne eines Gerad- oder SchrĂ€geinstechschleifens beim Umfangsschleifen der Außen- kontur des Maschinenbauteils ein LĂ€ngsvorschub der Schleifscheibe nicht erforderlich ist. Wenn die Außenkontur des Maschinenbauteils profiliert ist, so kann das Gerad- oder SchrĂ€geinstech- schleifen auch mit einer profilierten Schleifscheibe erfolgen, weiche selbstverstĂ€ndlich wie alle anderen Schleifscheiben auch zwischenzeitlich abgerichtet werden kann und muss. According to a further embodiment of the invention, the grinding wheel for external grinding is arranged on a wheelhead, which is then pivoted to Ineing riffbringen this grinding wheel during external grinding on the workpiece and / or moved. In addition, the inner grinding wheel is arranged on a separate wheelhead, preferably in the area of the tailstock, and can be moved relative to the longitudinal axis of the workpiece so that the inner grinding wheel, which is also referred to as inner grinding pin, the hollow tailstock hollow spindle with hollow point in the longitudinal direction of the machine partly passes through and thus grinds the inner recess. This ensures that the sharpening of the outer contour of the machine component and the inner surface of the inner recess can be performed at least temporarily parallel to time. According to a further development, when grinding the outer contour of the machine component, the rotational axis of the grinding wheel for the outer grinding and the common axis of rotation of the workpiece headstock, machine component and tailstock obliquely arranged in space to each other such that during grinding substantially only a point contact between the grinding wheel and the outer contour of the machine component is present. The longitudinal feed is then preferably in the direction of the WerkstĂŒckspi ndelstock out. The oblique positioning of the axes in space to each other, which ensures the point-like contact between the grinding wheel and the outer contour of the machine component, is also referred to as Quickpoint loops. However, it is also preferably possible that, when grinding the outer contour of the machine component, the axis of rotation of the grinding wheel and the common axis of rotation of the workpiece headstock, machine components! and tailstock parallel to each other or at an angle in the plane to each other, so that a substantially linear contact between the grinding wheel and the outer contour of the machine component is ensured. This is advantageous if, in the sense of straight or oblique indent grinding during circumferential grinding of the outer contour of the machine component, a longitudinal feed of the grinding wheel is not required. If the outer contour of the machine component is profiled, straight or oblique piercing grinding can also be carried out with a profiled grinding wheel, which of course, like all other grinding wheels, can and must be dressed in the meantime.
Vorzugsweise ist es auch möglich, dass mit der Schleifscheibe fĂŒr das Außenschleifen sowohl Umfangsbereiche, vorzugsweise rotationssymmetrischer Art, als auch StirnflĂ€chen des Maschi- nenbauteils geschliffen werden. Die Reitstock-Hohlpinole ist vorzugsweise mitlaufend ausgebildet; sie kann jedoch auch ange- trieben werden. Vorzugsweise ist der Antrieb der Reitstock-Hoh Ipi nole mit dem Antrieb des WerkstĂŒckspindeistockes auf der gegenĂŒberliegenden Seite im Sinne einer elektronischen Wel- le aufeinander abgestimmt. Vorzugsweise wird die Schleifbearbeitung des Maschinenbauteils ĂŒber CNC-Steuerungen reali- siert. Das bedeutet, dass sĂ€mtliche Bewegungen des Maschinenbauteils oder der Schleifwerk- zeuge CNC-gesteuert ablaufen. GemĂ€ĂŸ einem zweiten Aspekt der Erfindung wird eine Schleifmaschine nach Art einer Univer- sal-Rund-Schleifmaschine und/oder Unrundschleifmaschine zur DurchfĂŒhrung des vorstehend beschriebenen Verfahrens bereitgestellt. In ĂŒblicher Weise weist die Schleifmaschine einen Schleiftisch auf, auf welchem ein WerkstĂŒckspindelstock und ein Reitstock angeordnet sind, welche in LĂ€ngsrichtung des Schlerftisches verfahrbar sind. Zwischen dem WerkstĂŒckspindel- stock und dem Reitstock ist ein zu schleifendes Maschinenbauteil aufspannbar, und zwar derart, dass die gemeinsame LĂ€ngsachse von WerkstĂŒckspindelstock, Maschinenbauteil und Reitstock in LĂ€ngsrichtung des Schleiftisches verlĂ€uft. Preferably, it is also possible that with the grinding wheel for the outer grinding both peripheral regions, preferably rotationally symmetrical type, as well as end surfaces of the machine nenbauteils be ground. The tailstock hollow quill is preferably designed to run along; however, it can also be powered. Preferably, the drive of the tailstock Hoh Ipi nole with the drive of the workpiece holder block on the opposite side in the sense of an electronic wave is matched to one another. Preferably, the grinding machining of the machine component is realized via CNC controls. This means that all movements of the machine component or the grinding tools are CNC-controlled. According to a second aspect of the invention, a grinding machine in the manner of a universal round grinding machine and / or non-circular grinding machine is provided for carrying out the method described above. In the usual way, the grinding machine has a grinding table, on which a workpiece headstock and a tailstock are arranged, which are movable in the longitudinal direction of the student table. A machine component to be ground can be clamped between the workpiece spindle stock and the tailstock in such a way that the common longitudinal axis of the workpiece headstock, machine component and tailstock runs in the longitudinal direction of the grinding table.
Es ist aber auch möglich, dass der Schleiftisch bezĂŒglich des Maschinenbettes fest montiert ist und der Schleifspindelstock bzw. die Schleifspindelstöcke parallel entlang der gemeinsamen LĂ€ngsachse von WerkstĂŒckspindelstock, Maschinenbauteil und Reitstock verfahrbar ist bzw. sind. But it is also possible that the grinding table is fixedly mounted with respect to the machine bed and the wheel headstock and the grinding headstocks are parallel along the common longitudinal axis of the workpiece headstock, machine component and tailstock movable or are.
Der WerkstĂŒckspindelstock weist entweder ein zentrisch spannendes Spannfutter oder ein Spannfutter mit ausgleichenden lösbaren Spannbacken und eine Zentrierspitze auf, welches das Maschinenbauteil am WerkstĂŒckspindelstock drehantreibend hĂ€lt. Beide Arten des Spann- futters gewĂ€hrleisten eine Zentrierung bei der Aufspannung des Maschinenbauteiis am Werk- stĂŒckspindelstock. Der Reitstock weist eine Reitstock-Hohlpinole mit einer vorzugsweise mitlau- fenden Hohlspitze in der Art eines in eine Fase der Innenausnehmung eingreifenden Eingreif- zapfens auf. Diese Hohlspitze greift in die Innenausnehmung des Maschinenbauteils derart ein, dass ein zentrierender Eingriff gewĂ€hrleistet wird und zwar derart, dass dieser zentrierende Ein- griff angepasst ist an eine rotationssymmetrische Innenausnehmung zumindest an dem Ende des Maschinenbauteils, welches am Reitstock einspannbar ist, d. h. an dem dem Werk- stĂŒckspindelstock gegenĂŒberliegenden Ende. The workpiece headstock has either a centrically exciting chuck or a chuck with compensating releasable clamping jaws and a centering tip, which rotatably holds the machine component on the workpiece headstock. Both types of chuck ensure centering during clamping of the machine component on the workpiece headstock. The tailstock has a tailstock hollow quill with a preferably mitlau- fenden hollow point in the manner of engaging in a chamfer of the inner recess engaging pin. This hollow point engages in the inner recess of the machine component such that a centering engagement is ensured in such a way that this centering engagement is adapted to a rotationally symmetrical inner recess at least at the end of the machine component, which can be clamped on the tailstock, ie. H. at the end opposite the workhead.
Die Reitstock-Hohlpinole und die Hohlspitze weisen eine Innenbohrung aus, welche groß genug ausgebildet ist, dass die Innenschleifscheibe zum Schleifen der Innenausnehmung, d. h. der inneren OberflĂ€che der Innenausnehmung, die Innenbohrung der Hohlpinole und die Hohlspitze durchgreifen kann. Die Innenschleifscheibe kann nun mit ihrer Innenschleifspindel entweder auf dem Schleifspindelstock angeordnet sein, welcher so verschwenk- und verfahrbar ist, dass die Innenschleifscheibe die Innenbohrung der Reitstock-Hohl pinole durchgreifen und die Innenaus- nehmung entsprechend schleifen kann. Der Nachteil einer derartigen Anordnung besteht darin, dass Außenschleifen und Innenschleifen nacheinander ausgefĂŒhrt werden mĂŒssen. Zur weite- ren, vor allen Dingen zeitlichen und kostenmĂ€ĂŸigen Optimierung des Schleifvorganges auf der erfindungsgemĂ€ĂŸen Schleifmaschine ist es jedoch vorzugsweise auch vorgesehen, dass ein separater Schleifstockspindelstock im Bereich des Reitstockes angeordnet ist und die Innen- schleifscheibe mit ihrer Innenschleifspindel trĂ€gt. Die Zustellung der Innenschleifscheibe imThe tailstock hollow quill and the hollow point have an inner bore which is large enough that the inner grinding wheel can grasp the inner bore of the inner recess, ie the inner surface of the inner recess, the inner bore of the hollow spindle and the hollow point. The inner grinding wheel can now be arranged with its inner grinding spindle either on the wheelhead, which can be pivoted and moved so that the inner grinding wheel can pass through the inner bore of the tailstock hollow pinole and grind the Innenaus- perception accordingly. The disadvantage of such an arrangement is that external grinding and internal grinding must be carried out one after the other. For further, above all temporal and cost optimization of the grinding process on the grinding machine according to the invention, however, it is preferably also provided that a separate grinding bench headstock is arranged in the area of the tailstock and carries the inner grinding wheel with its inner grinding spindle. The delivery of the inner grinding wheel in
Durchgriff der Reitstock-Hohlpinole erfolgt dann im Wesentlichen in Richtung der LĂ€ngsachse des Maschinenbauteils, so dass die innere UmfangsflĂ€che der Innenausnehmung geschliffen werden kann und zwar zumindest zeitweise zeitparallei zum Schleifen der Außenkontur des Maschinenbauteils. Vorzugsweise weist die erfindungsgemĂ€ĂŸe Schleifmaschine sowohl einen schwenkbaren Schleifspindelstock auch mit einer eine Innenschleifscheibe tragenden Schleif- spindel als auch den separaten Schleifspindelstock als zusĂ€tzlichen Schleifspindelstock auf. Bei der erfindungsgemĂ€ĂŸen Schleifmaschine sind der WerkstĂŒckspindeistock und der Reitstock relativ zueinander derart bewegbar, dass das Maschinenbauteil zwischen der Zentrierspitze am WerkstĂŒckspindeistock oder dem dort vorgesehenen zentrisch spannenden Spannfutter und der Hohlspitze am Reitstock unter axialem Druck und bei in der Aufspannung unverĂ€nderlicher Be- zugsachse gehalten und drehangetrieben ist. Die erfindungsgemĂ€ĂŸe Schleifmaschine ermög- licht daher ein Außenschleifen und Innenschleifen, welche zumindest zeitweise zeitparallel ab- laufen. Da die Schleifbearbeitung auf der erfindungsgemĂ€ĂŸen Schleifmaschine in ein und der- selben Aufspannung erfolgt, wird wĂ€hrend des Schleifens die Bezugsachse nicht verĂ€ndert, wodurch eine höhere Genauigkeit der mit der erfindungsgemĂ€ĂŸen Schleifmaschine geschliffe- nen Maschinenbauteile erreicht wird. Passing through the tailstock hollow quill then takes place substantially in the direction of the longitudinal axis of the machine component, so that the inner circumferential surface of the inner recess can be ground and at least temporarily zeitparallei for grinding the outer contour of the machine component. The grinding machine according to the invention preferably has both a pivotable wheelhead and a grinding spindle bearing an internal grinding wheel as well as the separate wheelhead as an additional wheelhead. In the grinding machine according to the invention, the workpiece holder peg and the tailstock are movable relative to each other such that the machine component is held and rotated between the centering point on the workpiece holder peg or the centrically tensioning chuck provided there and the hollow point on the tailstock under axial pressure and with an unchanging reference axis is. The grinding machine according to the invention therefore permits external grinding and internal grinding, which run at least temporarily parallel to time. Since the grinding on the grinding machine according to the invention takes place in one and the same clamping, the reference axis is not changed during grinding, whereby a higher accuracy of machine components ground with the grinding machine according to the invention is achieved.
Vorzugsweise ist ein senkrecht zur LĂ€ngsrichtung des Schleiftisches gesteuert verfahrbarer Schlitten vorgesehen, an welchem ein um eine senkrechte Schwenkachse schwenkbarer Schleifspindelstock angeordnet ist. An diesem Schleifspindelstock ist die zur Rotation angetrie- bene Schleifscheibe zum Schleifen der Außenkontur des Maschinenbauteils mit diesem in Schleifeingriff bring bar, wobei die Schleifscheibe zum Schleifen der Außenkontur mit waage- recht verlaufender Rotationsachse auf dem Schleifspindelstock gelagert ist. Preferably, a vertically movable to the longitudinal direction of the grinding table movable carriage is provided, on which a pivotable about a vertical pivot axis grinding headstock is arranged. For grinding the outer contour of the machine component, the grinding wheel driven for rotation can be brought into grinding engagement with this grinding wheel head, the grinding wheel being mounted on the grinding headstock for grinding the outer contour with a horizontal axis of rotation.
Vorzugsweise weist die Schleifscheibe sowohl an ihrem Umfang als auch an ihrer StirnflĂ€che jeweils einen Schleifbelag auf. Damit ist es möglich, mit der erfindungsgemĂ€ĂŸen Schleifmaschi- ne zylindrische Außenkonturen wie auch PlanflĂ€chen oder Konen an dem Maschinenbauteil gegebenenfalls sogar im Wege des Einstechschleifens zu schleifen, ohne dass die Aufspan- nung gelöst werden muss. Preferably, the grinding wheel has an abrasive coating both on its circumference and on its end surface. It is thus possible with the grinding machine according to the invention to grind cylindrical outer contours as well as plane surfaces or cones on the machine component, possibly even by means of plunge grinding, without the need for loosening the clamping.
Vorzugsweise sind die Innenschleifscheibe wie auch die Schleifscheibe fĂŒr die Außenkontur jeweils mit einem CBN-Belag versehen. Der CBN-Belag sichert eine hohe Schleifgenauigkeit, hohen Schleifabtrag und dennoch hohe Standzeiten der Schleifscheiben. Wenn das Maschinenbauteil auch auf der Seite des das Maschinenbauteil einspannenden WerkstĂŒckspindelstockes eine Innenausnehmung aufweist, dann ist das Spannfutter vorzugs- weise hohl ausgebildet, so dass mittels einer weiteren Innenschleifscheibe zum Schleifen auch dieser Innenausnehmung am werkstĂŒckspindelstockseitigen Ende des Maschinenbauteils diese Hohlbohrung des Spannfutters durchgreifen kann. Diese weitere Innenschleifscheibe ist vor- zugsweise auf einem weiteren separaten Innenschleifspindelstock angeordnet, so dass diese weitere Innenschleifscheibe unabhĂ€ngig von dem Schleifspindelstock fĂŒr die Außenkontur ver- fahren und zugestellt werden kann. Selbst bei Innenausnehmungen an beiden Enden des Ma- schinenbauteils kann daher ein zeitparalleles Schleifen sowohl der Außenkontur als auch der Innenkonturen mit der erfindungsgemĂ€ĂŸen Schleifmaschine realisiert werden. Preferably, the inner grinding wheel as well as the grinding wheel for the outer contour are each provided with a CBN coating. The CBN coating ensures high grinding accuracy, high grinding removal and nevertheless long service life of the grinding wheels. If the machine component also has an inner recess on the side of the workpiece spindle clamping the machine component, then the chuck is preferably hollow so that this inner recess on the workpiece spindle end of the machine component can pass through this hollow bore of the chuck by means of a further inner grinding wheel for grinding. This further inner grinding wheel is preferably arranged on a further separate inner grinding headstock, so that this further inner grinding wheel can be moved and delivered independently of the grinding headstock for the outer contour. Even with internal recesses at both ends of the machine component, a time-parallel grinding of both the outer contour and the inner contours with the grinding machine according to the invention can therefore be realized.
Weitere Ausgestaltungen und Details der vorliegenden Erfindung werden nun anhand der beige- fĂŒgten Zeichnung detailliert erlĂ€utert. In der Zeichnung zeigen: Figur 1 : Eine erfindungsgemĂ€ĂŸe Schleifmaschine in Draufsicht; Further embodiments and details of the present invention will now be explained in detail with reference to the enclosed drawing. FIG. 1 shows a top view of a grinding machine according to the invention;
Figur 2: eine im Grundaufbau Figur 1 entsprechende Schleifmaschine, jedoch mit zusĂ€tzli- chem Innenschleifspindelstock; Figur 3: eine Teilansicht der erfindungsgemĂ€ĂŸen Schleifmaschine mit zum Außenschleifen des Maschinenbauteils eingeschwenkter Schleifspindel mit Außen Schleifscheibe; FIG. 2: a grinding machine corresponding in basic construction, FIG. 1, but with an additional internal grinding headstock; FIG. 3 shows a partial view of the grinding machine according to the invention with grinding spindle pivoted into the outer grinding of the machine component with outer grinding wheel;
Figur 4: eine Teiiansicht einer Schleifmaschine mit eingeschwenkter Schleifspindel mit In- nenschleifscheibe; FIG. 4 shows a partial view of a grinding machine with pivoted grinding spindle with inner grinding wheel;
Figur 5: Detailansicht des im WerkstĂŒckspindelstock mit Spannfutter gespannten Maschi- nenbauteils sowie Spannung mit Reitstock-Hohlpinole bei Innenschleifscheibe außer Eingriff; Figur 6: eine Detailansicht gemĂ€ĂŸ Figur 5 bei Innenschleifscheibe im Eingriff mit der Innen- ausnehmung des Maschinenbauteils; FIG. 5: detailed view of the machine component tensioned in the workpiece headstock with chuck and tension with tailstock hollow spindle with internal grinding wheel disengaged; FIG. 6 shows a detailed view according to FIG. 5 with inner grinding wheel in engagement with the inner recess of the machine component;
Figur 7: eine prinzipielle Draufsicht einer erfindungsgemĂ€ĂŸen Schleifmaschine mit zwei FIG. 7 shows a basic plan view of a grinding machine according to the invention with two
Schleifspindelstöcken;  Wheel heads;
Figur 8: eine Detailansicht der erfindungsgemĂ€ĂŸen Schleifmaschine mit zwei Innenschleif- spindeln fĂŒr beidseitig vorgesehene Innenausnehmungen am Maschinenbauteil; und Figur 9: eine prinzipielle Anordnung eines Maschinenbauteils in Form eines Zahnrades, wel- ches gemĂ€ĂŸ dem Verfahren der Erfindung geschliffen wird. Die in Fig. 1 in Draufsicht dargestellte Schleifmaschine ist bezĂŒglich ihres Grundaufbaus grund- sĂ€tzlich angelehnt an den Aufbau einer Universal-Rund- und/oder Unrundschleifmaschine. Ein in ĂŒblicher Weise vorgesehener Schleiftisch 28 ist in Richtung einer sogenannten Z-Achse auf einem Maschinenbett 27 lĂ€ngsverschieblich gefĂŒhrt. Auf dem Schleiftisch 28 ist ein Werk- stĂŒckspindelstock 9 mit seinem (nicht bezeichneten) Antriebsmotor und einem Spannfutter 11 angebracht. Das Spannfutter 11 dient zum Einspannen des WerkstĂŒckes, d. h. des Maschinen- bauteils 2. Am WerkstĂŒckspindelstock 9 wird das Maschinenbauteil mittels einer Zentrierspit- ze 13 und lösbaren Spannbacken 12 des Spannfutters 11 gespannt. FIG. 8 shows a detail view of the grinding machine according to the invention with two inner grinding spindles for inner recesses provided on both sides on the machine component; and 9 shows a basic arrangement of a machine component in the form of a toothed wheel, which is ground according to the method of the invention. The grinding machine shown in plan view in FIG. 1 is fundamentally ajar to the structure of a universal round and / or non-circular grinding machine with respect to its basic construction. A conventionally provided grinding table 28 is guided in the direction of a so-called Z-axis on a machine bed 27 longitudinally displaceable. On the grinding table 28, a workpiece headstock 9 with its (not designated) drive motor and a chuck 11 is mounted. The chuck 11 is used for clamping the workpiece, ie the machine component 2. On the workpiece headstock 9, the machine component by means of a Zentrierspit- ze 13 and releasable clamping jaws 12 of the chuck 11 is tensioned.
Gleichachsig mit dem WerkstĂŒckspindelstock 9 ist im axialen Abstand dazu ein Reitstock 10 angeordnet. Der Reitstock 10 weist eine gesondert ausgefĂŒhrte Pinole zur Aufnahme einer als Reitstock-Hohlpinole 15 ausgefĂŒhrten Reitstockspitze auf. Der Reitstock 10 ist ebenfalls auf dem Schieiftisch 28 angeordnet, so dass das Maschinenbauteil 2 ĂŒblicherweise zwischen dem WerkstĂŒckspindelstock 9 und dem Reitstock 10 auf einer gemeinsamen Drehachse, der LĂ€ngs- achse 1 des Maschinenbauteils 2, eingespannt ist. Zur ProzessĂŒberwachung sind in der Schleifmaschine Mess Vorrichtungen 23.1 , 23.2 und 23.3 vorgesehen, welche zur Messung der Außen- und/oder Innendurchmesser eingesetzt werden. Die von den Messvorrichtungen ge- wonnenen Messsignale dienen der Überwachung und Steuerung der Schleifmaschine, indem die Messsignale direkt der Steuerung der Schleifmaschine in ĂŒblicher Weise zugefĂŒhrt werden. Ebenfalls in ĂŒblicher Weise ist eine Abrichtvorrichtung 29 vorgesehen, welche dem Abrichten der an der Schleifmaschine vorhandenen Schleifscheiben dient. Ebenfalls eingezeichnet ist eine LĂŒnette 22, welche im aktiven Einsatz das Maschinenbauteil teilweise am Umfang umgreift und lediglich vorgesehen ist, wenn das Maschinenbauteil relativ lang ist, um beim Schleifen der Au- ßenkontur die durch schleifende Schleifscheiben eingebrachten SchleifkrĂ€fte zu kompensieren. Eine LĂŒnette am Endbereich des Maschinenbauteils zum Zwecke des Innenschleifens, wie es beim Stand der Technik erforderlich ist, ist nicht erforderlich. Sie ist lediglich fakultativ und dient nur der Vermeidung der durch SchleifkrĂ€fte gegebenenfalls hervorgerufenen Durchbiegung ei- nes relativ langen Maschinenbauteils. Bei kĂŒrzeren Bauteilen, weiche eine ausreichende Biege- steifigkeit aufweisen, ist die LĂŒnette entbehrlich. Die Schleifmaschine weist einen Schleifspindeistock 18 auf, welcher eine Schleifspindel 25 mit einer Schleifscheibe 8 zum Innenschleifen, eine Schleifspindel 26.1 mit einer ersten Außen- schleifscheibe 16.1 und eine Schleifspindel 26.2 mit einer zweiten Außen Schleifscheibe 16.2 aufweist. D. h. Die drei Schleifspindeln 25, 26.1 und 26.2 sind alle auf dem gemeinsamenCoaxially with the workpiece headstock 9, a tailstock 10 is arranged at an axial distance therefrom. The tailstock 10 has a separately executed Quill for receiving a designed as a tailstock hollow quill 15 tailstock tip. The tailstock 10 is also arranged on the sliding table 28, so that the machine component 2 is usually clamped between the workpiece headstock 9 and the tailstock 10 on a common axis of rotation, the longitudinal axis 1 of the machine component 2. For process monitoring measuring devices 23.1, 23.2 and 23.3 are provided in the grinding machine, which are used for measuring the outer and / or inner diameter. The measuring signals obtained by the measuring devices serve to monitor and control the grinding machine by feeding the measuring signals directly to the control of the grinding machine in the usual way. Also in the usual way, a dressing device 29 is provided, which serves for dressing the grinding wheels present on the grinding machine. Also drawn in is a steady rest 22 which partially engages around the circumference of the machine component during active use and is provided only when the machine component is relatively long in order to compensate for the grinding forces introduced by grinding wheels during grinding of the outer contour. A bezel at the end portion of the machine component for internal grinding purposes, as required in the prior art, is not required. It is only optional and serves only to avoid the deflection of a relatively long machine component, which may possibly be caused by grinding forces. For shorter components, which have sufficient flexural rigidity, the bezel is dispensable. The grinding machine has a grinding spindle holder 18, which has a grinding spindle 25 with an inner grinding wheel 8, a grinding spindle 26.1 with a first outer grinding wheel 16.1 and a grinding spindle 26.2 with a second outer grinding wheel 16.2 having. Ie. The three grinding spindles 25, 26.1 and 26.2 are all on the common
Schleifspindelstock 18 angeordnet. Der Sch Seifspindelstock 18 ist um eine Schwenkachse 24 schwenkbar und auf einem Schlitten 19.1 angeordnet. Der Schlitten 19.1 seinerseits ist senk- recht zu der gemeinsamen Drehachse, d. h. der LĂ€ngsachse 1, verschiebbar angeordnet. Die Verschiebbarkeit des Schlittens 19.1 erfolgt also in Richtung der ĂŒblichen X-Achse. Die Schwenkbewegung des Schleifspindelstockes 18 ist durch den gekrĂŒmmten Doppelpfeil B ge- kennzeichnet. Die Verschiebebewegung des Schlittens 19.1 ist durch den geraden Doppelpfeil X angedeutet. Mit Z ist die Verschiebebewegung in Richtung der LĂ€ngsachse 1 des Maschinen- bauteils 2 angedeutet, wĂ€hrend C die Rotation des Maschinenbauteils um die gemeinsame Drehachse, d. h. LĂ€ngsachse, bezeichnet. Durch Verschwenken des Schleifspindelstockes 18 werden die fĂŒr die Bearbeitung jeweils erforderlichen Schleifscheiben, d. h. die Innenschleif- scheibe 8, die erste Außenschleifscheibe 16.1 bzw. die zweite Außenschleifscheibe 16.2, zur AusfĂŒhrung ihrer jeweiligen Schleifaufgabe in Eingriff mit dem Maschinenbauteil 2 gebracht. Bei dem beschriebenen AusfĂŒhrungsbeispiel gemĂ€ĂŸ Fig. 1 werden die Außenkontur und die Innenkontur des Maschinenbauteils 2 nacheinander geschliffen, da durch die gemeinsame An- ordnung aller Schleifscheiben mit ihren Schleifspindeln auf einem Schleifspindelstock 18 die jeweiligen Schleifaufgaben nur nacheinander ausgefĂŒhrt werden können. Auf jeden Fall bleibt aber das Maschinenbauteil in ein und derselben Aufspannung bei ein und derselben Zentrierung in der erfindungsgemĂ€ĂŸen Schleifmaschine aufgespannt, und zwar sowohl fĂŒr das Schleifen der Außenkontur als auch das Schleifen der Innenkontur. Die erste Außenschleifscheibe 16.1 dient dazu, die Außenkontur des Maschinenbauteils 2 zu schleifen. Die zweite Außenschleifscheibe 16.2 kann sowohl rotationssymmetrische Urnfangsf lachen als auch StirnflĂ€chen am Maschinen- bauteil 2 schleifen. Damit ist gewĂ€hrleistet, dass am Maschinenbauteil 2 gegebenenfalls vor- handene StirnflĂ€chen ebenfalls in derselben Aufspannung geschliffen werden können. Die Schleifspindel 25 trĂ€gt die Innenschleifscheibe 8, welche einen kleinen Durchmesser hat und dazu dient, die rotationssymmetrische Innenausnehmung 6 des Maschinenbauteils 2 zu schlei- fen, indem die Innenschleifscheibe 8 die Reitstock-Hohlpinole 15 durchgreift. Wegen des klei- nen Durchmessers der Innenschleifscheibe 8 wird diese auch als Schleifstift bezeichnet. Zur DurchfĂŒhrung des erfindungsgemĂ€ĂŸen Verfahrens ist es ausreichend, wenn lediglich die Innen- schleifspindel 25 mit der Innenschleifscheibe 8 und die Schleifspindel 26.2 mit der Außen- schleifscheibe 16.2 vorgesehen sind. Die auf dem Schleif spindelstock 18 außerdem noch ange- ordnete Schleifspindel 26.1 mit ihrer Außenschleifscheibe 16.1 kann fĂŒr weitere Bearbeitungs- vorgĂ€nge am Maschinenbauteil angewendet werden, beispielsweise um weitere Umfangs- und StirnflĂ€chen oder Einstiche zu schleifen. Beim Schleifen der Innenausnehmung 6 mittels der Innenschleifscheibe 8 durch die Reitstock- Hohlpinole 15 hindurch ist ein weiterer Vorteil des erfindungsgemĂ€ĂŸen Verfahrens vorhanden, nĂ€mlich dass der KĂŒhlschmierstoff unmittelbar durch die Reitstock-Hohipinole 15 zur inneren OberflĂ€che der Innenausnehmung 6 gefĂŒhrt wird, mit welcher die Innenschleifscheibe 8 beim Schleifen der Innenausnehmung 6 in Eingriff ist. Damit ist es möglich, dass der KĂŒhlschmierstoff unmittelbar und direkt in optimaler Weise an den Schleifbereich gefĂŒhrt wird. Grinding spindle 18 arranged. The Sch Seifspindelstock 18 is pivotable about a pivot axis 24 and arranged on a carriage 19.1. The slide 19.1 in turn is perpendicular to the common axis of rotation, ie the longitudinal axis 1, arranged displaceably. The displaceability of the carriage 19.1 thus takes place in the direction of the usual X-axis. The pivoting movement of the wheelhead 18 is characterized by the curved double arrow B. The displacement movement of the carriage 19.1 is indicated by the straight double arrow X. With Z, the sliding movement in the direction of the longitudinal axis 1 of the machine component 2 is indicated, while C denotes the rotation of the machine component about the common axis of rotation, ie longitudinal axis. By pivoting the grinding headstock 18, the respectively required for machining grinding wheels, ie the inner grinding disc 8, the first outer grinding disc 16.1 and the second outer grinding disc 16.2, brought to perform their respective grinding task in engagement with the machine component 2. In the described embodiment according to FIG. 1, the outer contour and the inner contour of the machine component 2 are ground one after the other, since the common grinding of all grinding wheels with their grinding spindles on a wheelhead 18 can only be performed successively. In any case, however, the machine component remains clamped in one and the same clamping at one and the same centering in the grinding machine according to the invention, both for the grinding of the outer contour and the grinding of the inner contour. The first outer grinding wheel 16.1 serves to grind the outer contour of the machine component 2. The second outer grinding wheel 16. 2 can grind both rotationally symmetrical peripheral surfaces and also grind end faces on the machine component 2. This ensures that possibly existing end faces on the machine component 2 can also be ground in the same clamping. The grinding spindle 25 carries the inner grinding wheel 8, which has a small diameter and serves to grind the rotationally symmetrical inner recess 6 of the machine component 2 by the inner grinding wheel 8 passing through the tailstock hollow spindle 15. Because of the small diameter of the inner grinding wheel 8, this is also referred to as a grinding pin. To carry out the method according to the invention, it is sufficient if only the inner grinding spindle 25 with the inner grinding wheel 8 and the grinding spindle 26.2 with the outer grinding wheel 16.2 are provided. The grinding spindle 26.1, which is also still arranged on the grinding headstock 18, with its outer grinding wheel 16.1 can be used for further machining operations on the machine component, for example in order to grind further circumferential and end faces or recesses. When grinding the inner recess 6 by means of the inner grinding wheel 8 through the tailstock hollow quill 15 through another advantage of the method according to the invention is present, namely that the coolant is passed directly through the tailstock Hohipinole 15 to the inner surface of the inner recess 6, with which the inner grinding wheel when grinding the inner recess 6 is engaged. This makes it possible for the coolant to be guided directly and directly in an optimum manner to the grinding area.
Fig. 2 zeigt in prinzipieller Darstellung eine erfindungsgemĂ€ĂŸe Schleifmaschine in Draufsicht, welche im Wesentlichen der Schleifmaschine gemĂ€ĂŸ Fig. 1 entspricht. Insoweit betreffen glei- che Bezugsziffern gleiche Bauteile bzw. Bauelemente. Im Unterschied zu Fig. 1 weist jedoch die Schleifmaschine gemĂ€ĂŸ Fig. 2 im Bereich des Reitstockes 10 einen zusĂ€tzlichen Innenschleif- spindelstock 30 auf. Dieser Innenschleifspindelstock 30 ist ebenfalls auf dem Maschinenbett 27 angeordnet und trĂ€gt in der Art eines weiteren, zweiten Schlittens 19.2 eine weitere Innen- schleifspindel 31 , welche eine weitere Innenschleifscheibe 32 trĂ€gt. Die weitere Innenschleif- spindei 31 ist auf dem Schlitten 19.2 in Z2-Richtung, d. h. in Richtung der LĂ€ngsachse 1 des Maschinenbauteils 2, verschiebbar und kann so durch die Reitstock-Hohipinole 15 in die Innen- ausnehmung 6 zu deren Bearbeitung eingefĂŒhrt werden. ZusĂ€tzlich kann der Schlitten 19.2 in X2-Richtung verfahren werden, so dass der Vorschub zur Schleifbearbeitung in der Innenaus- nehmung entsprechend eingestellt werden kann. FIG. 2 shows a schematic representation of a grinding machine according to the invention in plan view, which substantially corresponds to the grinding machine according to FIG. 1. In that regard, the same reference numerals refer to the same components or components. In contrast to FIG. 1, however, the grinding machine according to FIG. 2 has an additional inner grinding headstock 30 in the area of the tailstock 10. This Innenschleifspindelstock 30 is also disposed on the machine bed 27 and carries in the manner of another, second carriage 19.2 another inner grinding spindle 31, which carries a further inner grinding wheel 32. The further internal grinding spindle 31 is mounted on the carriage 19.2 in the Z2 direction, i. H. in the direction of the longitudinal axis 1 of the machine component 2, displaceable and can be introduced by the tailstock Hohipinole 15 in the inner recess 6 for the processing thereof. In addition, the carriage 19.2 can be moved in the X2 direction, so that the feed for grinding in the inner recess can be adjusted accordingly.
Fig. 3 zeigt eine Detaiiansicht des prinzipiellen Aufbaus der erfindungsgemĂ€ĂŸen Schleifmaschi- ne entsprechend Fig. 1. Das Maschinenbauteil 2 ist bezĂŒglich seiner LĂ€ngsachse 1 zwischen den Spitzen am WerkstĂŒckspindelstock 9 im Spannfutter 11 mit den Spannbacken 12 und der Zentrierspitze 13 sowie am Reitstock 10 mittels der Reitstock-Hohipinole 15 und der mittlaufen- den Hohlspitze 20 gespannt. Diese Aufspannung zwischen den Spitzen bleibt wĂ€hrend der ge- samten Bearbeitung erhalten. Das Maschinenbauteil 2 weist in seiner linken HĂ€lfte einen umlau- fenden Bund auf, welcher dem WerkstĂŒckspindelstock 9 und der Reitstock-Hohipinole 15 zuge- wandte Planseiten aufweist. DarĂŒber hinaus weist das Maschinenbauteil 2 im Bereich der Ein- spannung im WerkstĂŒckspindelstock 9 eine Schulter auf, welche ebenfalls eine Planseite bildet. Auf dem Schleif spindelstock 18, dessen Schwenkbarkeit durch den gekrĂŒmmten Doppelpfeil B gekennzeichnet ist, ist die Schleifspindel 26 mit der Außenschleifscheibe 16 zum Außenschlei- fen in Richtung auf das WerkstĂŒck geschwenkt. Mittels der Außenschleifscheibe 16 wird die gesamte zylindrische Außenkontur 17 des Maschinenbauteils 2 geschliffen. Die Außenschleif- scheibe 16 ist so ausgebildet, dass sie mit ihren Stirnseiten auch die Planseiten am Maschinen- bauteil 2 schleifen kann. Zum einen wird die Außenschleifseite 16 ĂŒber die X-Achse auf die Au- ßenkontur 17 des Maschinenbauteils 2 zugestellt, so dass das Außenschleifen mittels dieser Außenschleifscheibe 16 durchgefĂŒhrt werden kann. Durch eine in Z-Richtung erfolgende Ver- schiebbarkeit der Schleifspindel 26 zusammen mit ihrer Außenschleifscheibe 16 können die Planseiten an dem umlaufenden Bund wie auch die Planseite an der Schulter im Bereich des WerkstĂŒckspindelstockes 9 geschliffen werden. Damit ist es möglich, die gesamte Außenkontur des Maschinenbauteils 2 zu schleifen. Fig. 3 shows a detailed view of the basic structure of the grinding machine according to the invention according to FIG. 1. The machine component 2 is with respect to its longitudinal axis 1 between the tips on the workpiece headstock 9 in the chuck 11 with the jaws 12 and the centering tip 13 and the tailstock 10 by means of Tailstock Hohipinole 15 and the mittlaufen- hollow point 20 stretched. This clamping between the tips is maintained during the entire processing. The machine component 2 has in its left half a circumferential collar, which has plan faces facing the workpiece headstock 9 and the tailstock hoisting dinette 15. In addition, in the area of the clamping in the workpiece headstock 9, the machine component 2 has a shoulder, which likewise forms a plane side. On the grinding headstock 18, whose pivoting is characterized by the curved double arrow B, the grinding spindle 26 is pivoted with the outer grinding wheel 16 for external grinding in the direction of the workpiece. By means of the outer grinding wheel 16, the entire cylindrical outer contour 17 of the machine component 2 is ground. The outer grinding wheel 16 is designed such that it can also grind the plan sides on the machine component 2 with its end faces. On the one hand, the outer grinding side 16 is delivered over the X-axis to the outer contour 17 of the machine component 2, so that the outer grinding can be carried out by means of this outer grinding wheel 16. Due to a Z-directional Slidability of the grinding spindle 26 together with its outer grinding wheel 16, the plan sides of the rotating collar as well as the plan side of the shoulder in the region of the workpiece headstock 9 can be ground. This makes it possible to grind the entire outer contour of the machine component 2.
Der Reitstock 10 ist nicht mit der ĂŒblicherweise ausgefĂŒhrten Pinole ausgestattet, sondern weist eine sehr kurz gelagerte Pinole auf, welche innen hohlgebohrt ist. In der Bohrung der Reitstock- Hohlpinole 15 ist eine Hohlspitze 20 vorgesehen, welche die Reitstockspitze darstellt und wel- che in im stirnseitigen Endbereich des Maschinenbauteils 2 vorgesehene Phasen so eingreift, dass das Maschinenbauteil 2 bezĂŒglich seiner LĂ€ngsachse 1 an dem dem Reitstock 10 zuge- wandten Ende zentriert bezĂŒglich der LĂ€ngsachse 1 aufgespannt ist. Die Hohlbohrung der Reit- stock- Höh Ipinole 15 ermöglicht es, dass eine Schleifscheibe (nicht dargestellt) zum Innenschlei- fen durch die Hohlbohrung hindurch in den Bereich der Innenausnehmung 6 des Maschinen- bauteils 2 hindurchgreifen kann, um dort die Bearbeitung der innenausnehmung auszufĂŒhren. The tailstock 10 is not equipped with the commonly performed quill, but has a very short sleeve mounted, which is hollow drilled inside. In the bore of the tailstock hollow quill 15, a hollow point 20 is provided which represents the tailstock tip and which engages in phases provided in the end-side end region of the machine component 2 such that the machine component 2 faces the tailstock 10 with respect to its longitudinal axis 1 End centered with respect to the longitudinal axis 1 is clamped. The hollow bore of the riding-stick height Ipinole 15 makes it possible for a grinding wheel (not shown) to reach through the hollow bore into the region of the inner recess 6 of the machine component 2 in order to carry out the machining of the inner recess there.
In Fig. 4 ist eine Schleifmaschine in Detailansicht und Draufsicht gemĂ€ĂŸ der Darstellung von Fig. 1 gezeigt, bei welcher die Innenausnehmung 6 am Maschinenbauteil 2 geschliffen wird. Das Maschinenbauteil 2 ist wiederum an seinem Sinken Ende im WerkstĂŒckspindelstock 9 mit- tels des Spannfutters 11 und des Spannbacken 12 sowie der Zentrierspitze 13 zentrisch gehal- ten. Gleichermaßen ist das Maschinenbauteii 2 auf dem dazu entgegengesetzten Ende 5 im Reifstock 10 mit dessen Reitstock-Hohlpinole 15 ĂŒber die darin mitlaufende Hohlspitze 20 eben- falls zentrisch aufgespannt, und zwar derart, dass die LĂ€ngsachse 1 des Maschinenbauteils 2 dessen Rotationsachse bildet. Die Außenkontur 17 des Maschinenbauteils wurde in der Weise geschliffen, wie sie in Verbindung mit Fig. 3 beschrieben worden ist. Zum Innenschleifen der Innenausnehmung 6 wurde die Innenschleifscheibe 8 mit ihrer Innenschleifspindel 25, welche auf dem Schleif spindelstock 18 gelagert und um dessen Schwenkachse 24 schwenkbar ist, durch die Hohlbohrung der Reitstock-Hohlpinole 15 in die Ausnehmung 6 des Maschinenbau- teils 2 geschwenkt und dort in Schleifeingriff gebracht. Dazu ist neben der Schwenkbarkeit der Innenschleifspindel 25 um die Schwenkachse 24 der Schleifspindelstock 18 entlang der X- Achse in der Innenausnehmung in Schleifeingriff bringbar. DarĂŒber hinaus ist zum Zwecke des HindurchfĂŒhrens der Innenschleifscheibe 8 durch die Schleifstock-Hoh Ipinole 15 diese in Z- Richtung so verfahrbar, dass die Innenschleifscheibe 8 durch die Hohlbohrung der Reitstock- Hohlpinole 15 in die Innenausnehmung 6 des Maschinenbauteils 2 hindurchfĂŒhrbar ist. Der Reitstock 10 ist sehr kurz gelagert, d. h. in Axialausrichtung kurz gebaut, und - wie be- schrieben - innen hohl gebohrt. WĂ€hrend des Innenschleifens bleibt das Maschinenbauteil 2 zwischen den Spitzen eingespannt. Fig. 5 zeigt in vergrĂ¶ĂŸerter Detailansicht das Maschinenbauteil 2, welches im Spannfutter 11 in den Spannbacken 12 mittels der Zentrierspitze 13 an der lĂ€ngsseitigen Stirnseite 14 des Ma- schinenbauteils 2 zentrisch eingespannt ist. An dem entgegengesetzten Ende 5 des Maschi- nenbauteils 2 dient die mitlaufende Hohlspitze 20 der Reitstock-Hohlpinole 15 der insgesamt zentrischen Aufspannung des Maschinenbauteils 2. FIG. 4 shows a grinding machine in detail view and plan view according to the representation of FIG. 1, in which the inner recess 6 on the machine component 2 is ground. The machine component 2 is in turn held centrically at its sinking end in the workpiece headstock 9 by means of the chuck 11 and the clamping jaw 12 and the centering point 13. Likewise, the machine component 2 is on the opposite end 5 in the hooping stick 10 with its tailstock hollow quill 15 likewise centrally spanned via the hollow tip 20 running therein, in such a way that the longitudinal axis 1 of the machine component 2 forms its axis of rotation. The outer contour 17 of the machine component was ground in the manner described in connection with FIG. 3. For internal grinding of the inner recess 6, the inner grinding wheel 8 with its Innenschleifspindel 25, which is mounted on the grinding headstock 18 and pivotable about its pivot axis 24, pivoted through the hollow bore of the tailstock hollow quill 15 in the recess 6 of the machine part 2 and there in Looping brought. For this purpose, in addition to the pivoting of the inner grinding spindle 25 about the pivot axis 24 of the wheelhead 18 along the X-axis in the inner recess can be brought into looping engagement. In addition, for the purpose of passing the inner grinding wheel 8 through the grinding rod Hoh Ipinole 15 this in the Z direction so moved that the inner grinding wheel 8 through the hollow bore of the tailstock hollow quill 15 in the inner recess 6 of the machine component 2 can be passed. The tailstock 10 is mounted very short, ie built short in axial alignment, and - as described - hollow drilled inside. During internal grinding, the machine component 2 remains clamped between the tips. 5 shows an enlarged detail view of the machine component 2, which is clamped centrally in the chuck 11 in the clamping jaws 12 by means of the centering tip 13 on the longitudinal end face 14 of the machine component 2. At the opposite end 5 of the machine component 2, the revolving hollow point 20 of the tailstock hollow quill 15 serves for the total centric clamping of the machine component 2.
Im Gegensatz zu den AusfĂŒhrungen gemĂ€ĂŸ Fig. 3 und 4 ist hier eine AusfĂŒhrung dargestellt, bei welcher die Außenkontur 17 mittels der Außenschleifscheibe 16 auf dem nicht dargestellten Schleifspindelstock 18 geschliffen wird, wohingegen die auf der Innensch leifspindel 25 gelagerte Innenschleifscheibe 8 durch die Hohlbohrung der Reitstock-Hohlpinole 15 in die Innenausneh- mung 6 zum Schleifen von deren inneren UmfangsflĂ€che 7 hindurchfĂŒhrbar ist. In der in Fig. 5 dargestellten Position befindet sich die Innenschleifscheibe 8 in einer Position noch vor dem DurchfĂŒhren durch die Hohlbohrung der Reitstock-Hohlpinole 15. Die Innenschleifspindel 25 mit der Innenschleifscheibe 8 in Form eines Schleif Stiftes ist auf einem separaten Innenschleifspin- delstock (nicht dargestellt) in Z-Richtung, d. h. in Richtung der LĂ€ngsachse 1 , sowie in X- Richtung, d. h. in Richtung auf einen Schleifeingriff an der UmfangsflĂ€che 7 der Innenausneh- mung 6 zustellbar. In contrast to the embodiments according to FIGS. 3 and 4, an embodiment is shown in which the outer contour 17 is ground by means of the outer grinding wheel 16 on the grinding spindle 18, not shown, whereas the inner grinding spindle 8 mounted on the Innensch spindle 8 through the hollow bore of the tailstock Hollow quill 15 in the inner recess 6 for grinding of the inner peripheral surface 7 can be passed. In the position shown in FIG. 5, the inner grinding wheel 8 is in a position even before passing through the hollow bore of the tailstock hollow quill 15. The inner grinding spindle 25 with the inner grinding wheel 8 in the form of an abrasive pin is on a separate Innenschleifspindelstock (not shown) in the Z direction, d. H. in the direction of the longitudinal axis 1, and in the X direction, d. H. in the direction of a looping engagement on the peripheral surface 7 of the Innenausneh- 6 deliverable.
Die Lagerung der Reitstock-Hohlpinole 15 ist mit hochgenauen Spindellagern versehen, wobei die mitlaufende Hohlspitze 20 durch die durch die SpannkrĂ€fte hervorgerufene Reibung im Zent- rum mit dem Maschinenbauteil 2 mitlĂ€uft. Die mitlaufende Hohlspitze 20 greift an einer InnenflĂ€- che am entgegengesetzten Ende 5 des Maschinenbauteils 2 in dichtender oder formschlĂŒssiger Weise an. Prinzipiell wĂ€re es auch möglich, dass bei zentrierender Aufspannung mittels einer stehenden Spitze, d. h. einer nicht mitlaufenden Spitze, die Bearbeitung am Maschinenbauteil 2 ausgefĂŒhrt wird. Auch wĂ€re es möglich, was hier aber nicht dargestellt ist, dass die Reitstock- Hohlpinole 15 als hydrodynamische oder hydrostatische Lagerung ausgebildet ist. The bearing of the tailstock hollow quill 15 is provided with high-precision spindle bearings, wherein the revolving hollow tip 20 runs along with the machine component 2 by the friction caused by the clamping forces in the center. The revolving hollow point 20 acts on an inner surface at the opposite end 5 of the machine component 2 in a sealing or positive-locking manner. In principle, it would also be possible that with centering clamping by means of a standing tip, d. H. a non-revolving tip, the machining is performed on the machine component 2. It would also be possible, but not shown here, that the tailstock hollow quill 15 is designed as a hydrodynamic or hydrostatic bearing.
Die ZufĂŒhrung von KĂŒhlschmierstoff erfolgt auf der Seite des WerkstĂŒckspindelstockes 9 durch die Zentrierspitze 13 des Spannfutters 11 hindurch. Dadurch ist es möglich, dass KĂŒhlschmier- stoff von der Seite des WerkstĂŒckspindelstockes zuverlĂ€ssig zu der Innenausnehmung 6 zu deren Schleifen mittels der Innenschleifscheibe 8 gelangt. Dies ist jedoch selbstverstĂ€ndlich nur möglich, wenn das Maschinenbauteil 2 eine durchgĂ€ngige Bohrung aufweist. Damit beim Innen- schleifen ausreichend derartiger zugefĂŒhrter KĂŒhlschmierstoff zum unmittelbaren Schleifeingriff gelangen kann, weist die Innenschleifscheibe 8 an ihrer vorderen Stirnseite einen kegelförmigen Aufsatz auf, welcher dazu dient, den KĂŒhlschmierstoff unmittelbar dem Schleifeingriff zuzufĂŒh- ren. Eine zuverlĂ€ssige Schmierung ist beim Innen schleifen besonders wichtig, weil dort die In- nenschleifscheibe 8 sich sozusagen in die zu schleifende UmfangsflĂ€che 7 einschmiegt und dadurch der Eingriffsbereich der Schleifscheibe an der UmfangsflĂ€che 7 der Innenausneh- mung 6 grĂ¶ĂŸer ist, als dies beim Außenschleifen einer zylindrischen oder durchaus auch nicht zylindrischen OberflĂ€che der Fall wĂ€re. The supply of cooling lubricant takes place on the side of the workpiece headstock 9 through the centering tip 13 of the chuck 11 therethrough. As a result, it is possible for the cooling lubricant to pass reliably from the side of the workpiece headstock to the inner recess 6 for its grinding by means of the inner grinding wheel 8. However, this is of course only possible if the machine component 2 has a continuous bore. In order for sufficient coolant to be supplied during internal grinding for direct grinding engagement, the inner grinding wheel 8 has a conical attachment on its front end, which serves to supply the cooling lubricant directly to the grinding engagement. Reliable lubrication is particularly important in internal grinding because there As a result, the engagement area of the grinding wheel on the peripheral surface 7 of the inner recess 6 is larger than would be the case in the external grinding of a cylindrical or even non-cylindrical surface.
Fig. 6 zeigt eine Darstellung gemĂ€ĂŸ Fig. 5, bei welcher jedoch die Innenschleifscheibe 8 durch die Hohlbohrung der Reitstock-Hohlpinole 15 in die Innenausnehmung 6 des Maschinenbauteils 2 in Schleifeingriff mit deren UmfangsflĂ€che 7 gebracht worden ist. Die weiteren mit entspre- chenden Bezugsziffern bezeichneten Bauteile bzw. Bauelemente entsprechen denen gemĂ€ĂŸ Fig. 5 und werden daher hier nicht nochmals nĂ€her erlĂ€utert. Fig. 6 shows a view according to FIG. 5, in which, however, the inner grinding wheel 8 has been brought by the hollow bore of the tailstock hollow quill 15 in the inner recess 6 of the machine component 2 in grinding engagement with its peripheral surface 7. The other components or components denoted by corresponding reference numerals correspond to those in accordance with FIG. 5 and will therefore not be explained again in more detail here.
Fig. 7 zeigt ein weiteres AusfĂŒhrungsbeispiel einer erfindungsgemĂ€ĂŸen Schleifmaschine, bei welcher auf dem Maschinenbett 27 zwei separate Schleifspindelstöcke 18.1 , 18.2 dargestellt sind. Die beiden Schleifspindelstöcke 18.1 , 18.2 tragen jeweils eine Außenschleifscheibe 16.1 bzw. 16.2 und eine Innenschleifscheibe 8.1 mit dazugehöriger Innenschleifspindel 25.1 bzw. 8.2 mit dazugehöriger Innenschleifspindel 15.2. Der Schleifspindelstock 18.1 ist um eine Schwenk- achse B1 schwenkbar, welche durch den Doppelpfeil gekennzeichnet ist. In analoger Weise ist der Schleifspindelstock 18.2 um eine Schwenkachse B2 schwenkbar, welche ebenfalls durch den Doppelpfeil gekennzeichnet ist. In ĂŒblicher Weise sind die Schleifspindelstöcke 18.1 und 18.2 in X1- bzw. X2-Achsrichtung zusteilbar sowie in Z1- bzw. Z2-Richtung in Richtung der LĂ€ngsachse 1 des Maschinenbauteils 2 verfahrbar. Dadurch ist es möglich, dass zum Schleifen der Außenkontur des Maschinenbauteils 2 die entsprechende Außenschleifscheibe 16.1 bzw. auch 16.2 in Eingriff bringbar ist, wohingegen das eine zentrale Bohrung aufweisende Maschi- nenbauteil 2 sowohl an seinem linken Ende als auch an seinem entgegengesetzten Ende 5 mlt- tels jeweiliger Hohlpinolen zentrisch gespannt ist, so dass das an jeweils einem Ende eine In- nenausnehmung aufweisende Maschinenbauteil 2 auf beiden Seiten innen mit den Innen- schleifscheiben 8.1 und 8.2 geschliffen werden kann. Mit einer derartigen Konfiguration ist es somit möglich, dass das Maschinenbauteil 2, welches an dem einen Ende in einem auf dem Schleiftisch 28 angeordneten WerkstĂŒcksp i ndelstock 9.1 in zuvor beschriebener Weise, welcher jedoch mit einem Hohlspannfutter ausgebildet ist, und an dem entgegengesetzten Ende 5 in einer Reitstock-Hohlpinole 15 gehalten ist, mittels jeweiliger Hohispitzen 20.1 und 20.2 (s. Fig. 8) so gehalten ist, dass die linksseitige und die rechtsseitige Innenausnehmung zumindest zeit- weise zeitparallel geschliffen werden können. Es ist jedoch mit dieser Konfiguration auch mög- lich, dass zumindest zeitweise zeitparallel zum Schleifen der Außenkontur mittels entweder der ersten Außenschleifscheibe 16.1 oder der zweiten Außenschleifscheibe 16.2 mit einer der auf den auf dem jeweils anderen Schleifspindelstock angeordneten Innenschleifscheibe die ent- sprechende Innenausnehmung geschliffen werden kann. Ebenso ist es möglich, dass mittels beider Außenschleifscheiben 16.1 und 16.2 zumindest zeitweise zeitparallel geschliffen werden kann, und zwar mit der einen der beiden Schleifscheiben die Außenkontur, wĂ€hrend mit der anderen der beiden Schleifscheiben die PlanflĂ€chen geschliffen werden. Mit einer derartigen Anordnung ist damit die FlexibilitĂ€t der erfindungsgemĂ€ĂŸen Schleifmaschine weiter erhöht, wenn auch der apparative Aufwand höher ist. Mit einer derartigen Anordnung lĂ€sst sich trotz komplexerer Konturen der zu schleifenden Maschinenbauteile eine verringerte Taktzeit realisie- ren. Der Werkstockspindelstock 9.1 ist mittels eines Antriebsmotors 33, welcher mit einem Ge- hĂ€use achsparallel zur LĂ€ngsachse 1 des Maschinenbauteils 2 angeordnet ist, angetrieben. Der Reitstock 10 ist in Z-Richtung verschiebbar, aber nicht angetrieben. Fig. 7 shows a further embodiment of a grinding machine according to the invention, in which on the machine bed 27, two separate grinding headstocks 18.1, 18.2 are shown. The two grinding spindle sticks 18.1, 18.2 each carry an outer grinding wheel 16.1 or 16.2 and an inner grinding wheel 8.1 with associated inner grinding spindle 25.1 or 8.2 with associated inner grinding spindle 15.2. The wheelhead 18.1 is pivotable about a pivot axis B1, which is characterized by the double arrow. In an analogous manner, the wheelhead 18.2 is pivotable about a pivot axis B2, which is also characterized by the double arrow. In the usual way, the grinding spindle sticks 18.1 and 18.2 can be added in the X1 or X2 axis direction as well as in the Z1 or Z2 direction in the direction of the longitudinal axis 1 of the machine component 2. This makes it possible that for grinding the outer contour of the machine component 2, the corresponding outer grinding wheel 16.1 or also 16.2 is engageable, whereas the central bore having a machine component 2 both at its left end and at its opposite end 5 mlt- is clamped centric so that the one at each end of an inner recess having machine component 2 on both sides inside with the inner grinding wheels 8.1 and 8.2 can be ground. With such a configuration, it is thus possible that the machine component 2, which at one end in a arranged on the grinding table 28 WerkstĂŒcksp I ndelstock 9.1 in the manner described above, which is formed with a hollow chuck, and at the opposite end 5 in a tailstock hollow quill 15 is held by means of respective hollow tips 20.1 and 20.2 (see Fig. 8) so that the left-side and the right-side inner recess can be ground at least temporarily time parallel. However, it is also possible with this configuration that at least temporarily parallel to the grinding of the outer contour by means of either the first outer grinding wheel 16.1 or the second outer grinding wheel 16.2 with one of the arranged on the other grinding wheel head inner grinding wheel, the corresponding inner recess can be ground , It is also possible that by means of both outside grinding wheels 16.1 and 16.2 can be ground time-parallel at least temporarily, with one of the two grinding wheels, the outer contour, while with the other of the two grinding wheels, the flat surfaces are ground. With such an arrangement so that the flexibility of the grinding machine according to the invention is further increased, although the equipment cost is higher. With such an arrangement, a reduced cycle time can be realized despite more complex contours of the machine components to be ground. The workbench stock 9.1 is driven by means of a drive motor 33, which is arranged with a housing axially parallel to the longitudinal axis 1 of the machine component 2. The tailstock 10 is displaceable in the Z direction, but not driven.
In Fig. 8 ist die prinzipielle Anordnung gemĂ€ĂŸ Fig. 7 in vergrĂ¶ĂŸerter Darstellung gezeigt, wobei jedoch lediglich die beiden Innenschleifscheiben 8.2 mit zugehöriger Innenschleifspindel 25.2 und Innenschleifscheibe 8.1 mit zugehöriger Innenschleifspindel 25.1 fĂŒr ein EinfĂŒhren durch die jeweiligen Hohlbohrungen des WerkstĂŒckspindelstockes 9.1 bzw. des Reitstockes 10 bereitste- hen. Am linksseitigen Ende des zentriert aufgespannten Maschinenbauteils 2 sind Lagerung und Antrieb des WerkstĂŒckspindelstockes 9.1 dargestellt. Um die Zentrierspitze 20.1 oder das Spannfutter anzutreiben, ist neben der konstruktiv kurz ausgefĂŒhrten Lagerung dieses hohl aus- gebildeten WerkstĂŒckspindelstockes 9.1 der ĂŒber Riemen, insbesondere Zahnriemen, realisierte Antrieb bzw. Antriebsmotor 33 vorgesehen. Die mögliche zumindest teilweise zeitparallele Be- arbeitung der zu schleifenden Außen- und Innenkonturen des Maschinenbauteils 2 erfolgt in der zuvor in Verbindung mit den anderen Figuren beschriebenen Reihenfolge und Art und Weise. In Fig. 8, the basic arrangement of FIG. 7 is shown in an enlarged view, but only the two inner grinding discs 8.2 with associated inner grinding spindle 25.2 and inner grinding disc 8.1 with associated Innenschleifspindel 25.1 for insertion through the respective hollow holes of the workpiece headstock 9.1 and the tailstock 10th ready. On the left-side end of the centered clamped machine component 2 storage and drive of the workpiece headstock 9.1 are shown. In order to drive the centering tip 20.1 or the chuck, the drive or drive motor 33 realized via belts, in particular toothed belts, is provided in addition to the constructively short bearing of this hollowly formed workpiece headstock 9.1. The possible at least partially time-parallel processing of the outer and inner contours of the machine component 2 to be ground takes place in the order and manner described above in connection with the other figures.
Und schließlich ist in Fig. 9 ein vereinfacht dargestelltes AusfĂŒhrungsbeispiel zum Schleifen eines Maschinenbauteils 2 gezeigt, welches - anders als in den Fig. 1 bis 8 - kein Wellenteil, sondern ein Zahnradbauteil ist. Die entsprechenden Schleif spindelstöcke sind der Einfachheit halber nicht dargestellt. Die zentrierte Aufspannung dieses Zahnradbauteils erfolgt dadurch, dass das Spannfutter 11 mit seinen Spannbacken 12 das Zahnrad an dessen Ă€ußerer Verzah- nung spannt. Zur Realisierung einer exakten Ausrichtung sind am Spannfutter 11 noch Planan- schlĂ€ge vorgesehen, gegen welche das Zahnrad gespannt wird. Dadurch wird eine eindeutige und fĂŒr die gesamte Bearbeitung feste Orientierung der Bezugsachse, nĂ€mlich der LĂ€ngsachse 1 , des Zahnrades 2, realisiert. Mittels einer profilierten Außenschleifscheibe 16.1 , welche auf einer entsprechenden Schleifspindel 26.1 rotatorisch angetrieben gelagert ist, werden profilierte Außenabschnitte am Nabenbereich des Zahnrades geschliffen. Des Weiteren ist einen Innen- schleifscheibe 8, welche auf ihrer zugehörigen Innenschleifspindel 21 rotatorisch angetrieben gelagert ist, vorgesehen, welche auf einem separaten Schleifspindelstock ĂŒber die Z3-Achse in die Nabenbohrung eingefahren werden kann, so dass die Nabenbohrung zumindest zeitparallel zur Außenkontur ĂŒber eine Zustellung lĂ€ngs der X3-Achse geschliffen werden kann. Auf der Seite des Spannfutters 11 ist ein zusĂ€tzlicher (nicht gezeigter) Schleifspindelstock vorgesehen, welcher eine Schleifscheibe 16.2 mit zugehöriger Spindel 26.2 trĂ€gt. Die Außenschleifscheibe 16.2 ist eine profilierte Schleifscheibe und dient dem Schleifen der Planseiten am Bund bzw. an der Nabe des Zahnrades 2. Auch dieses Zahnrad kann gemĂ€ĂŸ der Erfindung zumindest zeit- weise zeitparallel sowohl an seiner Außen- als auch seiner Innenkontur geschliffen werden. Finally, FIG. 9 shows a simplified example of an embodiment for grinding a machine component 2, which - unlike in FIGS. 1 to 8 - is not a shaft part but a gear component. The corresponding grinding headstocks are not shown for the sake of simplicity. The centered clamping of this gear component takes place in that the chuck 11 with its clamping jaws 12 spans the gear on its outer toothing. To achieve an exact alignment plan attacks are still provided on the chuck 11, against which the gear is clamped. As a result, an unambiguous and for the entire processing fixed orientation of the reference axis, namely the longitudinal axis 1, the gear 2, realized. By means of a profiled outer grinding wheel 16.1, which is rotatably driven driven on a corresponding grinding spindle 26.1, profiled outer sections are ground on the hub portion of the gear. Furthermore, an inner grinding wheel 8, which is mounted rotatably driven on its associated inner grinding spindle 21, is provided, which can be retracted on a separate wheelhead via the Z3 axis in the hub bore, so that the hub bore at least parallel to the outer contour via a delivery can be ground along the X3 axis. On the Side of the chuck 11, an additional (not shown) grinding headstock is provided, which carries a grinding wheel 16.2 with associated spindle 26.2. The outer grinding wheel 16.2 is a profiled grinding wheel and serves to grind the face sides on the collar or on the hub of the toothed wheel 2. This toothed wheel can also be ground in time, both at its outer contour and at its inner contour, at least temporarily according to the invention.
BezuQSziffemliste: BezuQSziffemliste:
1 LĂ€ngsachse 1 longitudinal axis
2 Maschinenbauteil  2 machine component
3 achsiales Ende  3 axial end
4 Lagerzapfen  4 journals
5 entgegengesetztes Ende  5 opposite end
6 Innenausnehmung  6 inner recess
6.1 weitere Innenausnehmung  6.1 further interior recess
7 UmfangsflÀche  7 peripheral surface
8 Innenschleifscheibe  8 internal grinding wheel
8.1 erste Innenschleifscheibe  8.1 first inner grinding wheel
8.2 zweite Innenschleifscheibe  8.2 second inner grinding wheel
9 WerkstĂŒckspindelstock  9 Workhead
9.1 WerkstĂŒckspindelstock mit Hohlpinole 9.1 Workhead with hollow quill
10 Reitstock 10 tailstock
11 Spannfutter  11 chucks
12 Spannbacken  12 jaws
13 Zentrierspitze  13 center point
14 Stirnseite  14 front side
15 Reitstock-Hohlpinole  15 tailstock hollow quill
16 Außenschleifscheibe  16 external grinding wheel
16.1 erste Außenschleifscheibe  16.1 first outer grinding wheel
16.2 zweite Außenschleifscheibe  16.2 second outer grinding wheel
17 Außenkontur  17 outer contour
18 Schleifspindelstock  18 wheelhead
18.1 erster Schleifspindeistock  18.1 first grinding spindle stalk
18.2 zweiter Schleifspindelstock  18.2 second wheelhead
19.1 erster Schlitten  19.1 first sled
19.2 zweiter Schlitten  19.2 second slide
20 mitlaufende Hohlspitze  20 revolving hollow point
20.1 Hohlspitze Werkstockspindelstock 20.1 hollow point workhead
20.2 Hohlspitze Reitstock 20.2 hollow point tailstock
22 LĂŒnette  22 bezel
23.1 erste Messvorrichtung  23.1 first measuring device
23.2 zweite Messvorrichtung 23.3 dritte Messvorrichtung 23.2 second measuring device 23.3 third measuring device
24 Schwenkachse  24 pivot axis
25 Schieifspindel Innenschleifscheibe 25 Sliding spindle Internal grinding wheel
25.1 erste Innenschleifspindel 25.1 first internal grinding spindle
25.2 zweite Innenschleifspindel  25.2 second internal grinding spindle
26 Sch leif sp indel Ao ßenschleifschei be 26 Sch leif sp indel Ao ßenschleifschei be
26.1 Schleifspindel erste Außenschleifscheibe26.1 Grinding spindle first outer grinding wheel
26.2 Schleifspindel zweite Außenschleifscheibe26.2 Grinding spindle second outer grinding wheel
27 Maschinenbett 27 machine bed
28 Schleiftisch  28 grinding table
29 Abrichtvorrichtung  29 dressing device
30 zusÀtzlicher Innenschleifspindefstock 30 additional internal grinding spindle
31 weitere Innenschleifspindel 31 further internal grinding spindle
32 weitere Innenschleifscheibe  32 more internal grinding wheel
33 Antrieb / Antriebsmotor  33 drive / drive motor

Claims

PatentansprĂŒche 1 . Verfahren zur in einer Aufspannung durchgefĂŒhrten Schleif bearbeitung eines um seine LĂ€ngsachse (1 ) zur Rotation angetriebenen Maschinenbauteils (2), welches an seinen beiden axialen Enden (3, 5) gespannt wird und zumindest an seinem einen Ende (5) eine Innenausnehmung (6) aufweist, welche mittels einer Innenschleifscheibe (8) geschliffen wird, wobei das Maschinenbauteil (2) in einer einzigen Aufspannung zwischen einem WerkstĂŒckspindelstock (9) und einem Reitstock (10) drehend angetrieben gehalten und mittels zumindest einer Schleifscheibe (16) an dessen Außenkontur (17) geschliffen wird, wobei Claims 1. Method for grinding carried out in a machining one about its longitudinal axis (1) for rotation driven machine component (2) which is stretched at its two axial ends (3, 5) and at least at one end (5) has an internal recess (6) which is ground by means of an internal grinding wheel (8), wherein the machine component (2) is rotationally driven in a single clamping between a workpiece headstock (9) and a tailstock (10) and by means of at least one grinding wheel (16) on its outer contour (17 ), wherein
a) das Maschinenbauteil (2) am Reitstock (10) mit einer mitlaufenden oder drehange- triebenen Reitstock-Hohlpinole (15) am Endbereich der Innenausnehmung (6) zent- rierend gehalten wird;  a) the machine component (2) is kept centering on the tailstock (10) with a rotating or rotationally driven tailstock hollow quill (15) at the end region of the inner recess (6);
b) die Innenschleifscheibe (8) wÀhrend des Schleifens der Innenausnehmung (6) die Reitstock-Hohlpinole (15) durchgreift, und  b) the inner grinding wheel (8) passes through the tailstock hollow quill (15) during the grinding of the inner recess (6), and
c) das Schleifen der Innenausnehmung (6) und das Schleifen der Außenkontur (17) des Maschinenbauteils (2) zumindest zeitweise zeitparallel durchgefĂŒhrt werden.  c) the grinding of the inner recess (6) and the grinding of the outer contour (17) of the machine component (2) are carried out at least temporarily parallel to time.
2. Verfahren nach Anspruch 1 , bei welchem die Schleifbearbeitung bei in der Aufspannung unverĂ€nderlichen Bezugsachsen und ohne LĂŒnettenabstĂŒtzung erfolgt. 2. The method of claim 1, wherein the grinding is done at fixed in the clamping reference axes and without LĂŒnettenabstĂŒtzung.
3. Verfahren nach Anspruch 1 oder 2, bei welchem die Aufspannung am WerkstĂŒckspindel- stock (9) mit einem zentrisch spannenden Spannfutter oder mit einem Spannfutter (11 ) mit ausgleichenden Spannbacken (12) und einer in die Stirnseite (14) des Maschinenbauteils (2) eingreifenden Zentrierspitze (13, 20.1 ) erfolgt. 3. The method of claim 1 or 2, wherein the clamping on the WerkstĂŒckspindel- stock (9) with a centrically exciting chuck or with a chuck (11) with compensating jaws (12) and one in the end face (14) of the machine component (2 ) engaging centering (13, 20.1) takes place.
4. Verfahren nach Anspruch 3, bei welchem die Zentrierspitze (20.1) hohl ist und durch eine weitere Innenschleifscheibe (8.1) zum Schleifen einer weiteren Innenausnehmung (6.1 ) durchgriffen wird. 4. The method of claim 3, wherein the centering tip (20.1) is hollow and is penetrated by a further inner grinding wheel (8.1) for grinding a further inner recess (6.1).
5. Verfahren nach einem der AnsprĂŒche 1 bis 4, bei welchem die Innenschleifscheibe (8) und die Schleifscheibe (16) durch Verschwenken und/oder Verfahren, insbesondere stu- fenlos, eines gemeinsamen Schleifspindelstockes (18) in und außer Eingriff mit dem Ma- schinenbauteil (2) gebracht werden, welche durch eine schwenkbare Anordnung auf ei- nem Schlitten (19.1) zum Schleifen der Innenausnehmung (6, 6.1 ) und zum Schleifen der Außenkontur (17) in einer Richtung parallel zur LĂ€ngsachse (1 ) des Maschinenbauteils (2) verfahren werden. 5. The method according to any one of claims 1 to 4, wherein the inner grinding wheel (8) and the grinding wheel (16) by pivoting and / or method, in particular gradual, a common wheel headstock (18) into and out of engagement with the Ma be brought by a pivotable arrangement on a a carriage (19.1) for grinding the inner recess (6, 6.1) and for grinding the outer contour (17) in a direction parallel to the longitudinal axis (1) of the machine component (2) are moved.
6. Verfahren nach einem der Anspruch 1 bis 4, bei welchem die Schleifscheibe (16) auf ei- nem Schlelfspindelstock (18, 18.1 ) angeordnet und durch dessen Schwenken in Schleif- eingriff mit dem Maschinenbauteil (2) gebracht wird. 6. Method according to one of claims 1 to 4, wherein the grinding wheel (16) is arranged on a spindle headstock (18, 18.1) and is brought into grinding engagement with the machine component (2) by its pivoting.
7. Verfahren nach Anspruch 6, bei welchem die Innenschleifscheibe (8) auf einem separaten Schlelfspindelstock (18.2) im Bereich des Reitstockes (10) angeordnet ist und zum Durch- greifen der Reitstock-Hohlpinole (15) in Richtung der LĂ€ngsachse (1 ) des Maschinenbau- teils (2) verfahren wird. 7. The method of claim 6, wherein the inner grinding wheel (8) on a separate spindle headstock (18.2) in the tailstock (10) is arranged and for reaching through the tailstock hollow quill (15) in the direction of the longitudinal axis (1) of Maschinenbau- part (2) is moved.
8. Verfahren nach einem der AnsprĂŒche 1 bis 7, bei welchem beim Schleifen der Außenkon- tur (17) des Maschinenbauteils (2) die Rotationsachse der Schleifscheibe (16) und die durch WerkstĂŒckspindelstock, Maschinenbauteil und Reitstock verlaufende gemeinsame LĂ€ngsachse derart schiefwinkelig im Raum zueinander verlaufen, dass im Wesentlichen nur eine punktförmige BerĂŒhrung zwischen der Schleifscheibe (16) und der Außenkontur (17) des Maschinenbauteils vorliegt, wobei der LĂ€ngsvorschub in Richtung auf den Werk- stĂŒckspindelstock (9, 9.1) hin erfolgt. 8. The method according to any one of claims 1 to 7, wherein when grinding the Außenkon- tur (17) of the machine component (2), the axis of rotation of the grinding wheel (16) and extending through the workpiece headstock, machine component and tailstock common longitudinal axis so obliquely in space to each other run substantially that there is only a point-like contact between the grinding wheel (16) and the outer contour (17) of the machine component, wherein the longitudinal feed takes place in the direction of the workpiece headstock (9, 9.1) out.
9. Verfahren nach einem der AnsprĂŒche 1 bis 7, bei welchem beim Schleifen der Außenkon- tur (17) des Maschinenbauteils (2) die Rotationsachse der Schleifscheibe (16) und die durch WerkstĂŒckspindelstock, Maschinenbauteil und Reitstock verlaufende gemeinsame Drehachse derart winkelig in der Ebene zueinander verlaufen, dass im Wesentlichen eine linienförmige BerĂŒhrung zwischen der Schleifscheibe (16) und der Außenkontur (17) des Maschinenbauteils (2) im Sinne eines SchrĂ€geinstechschleifens vorliegt. 9. The method according to any one of claims 1 to 7, wherein when grinding the Außenkon- tur (17) of the machine component (2), the axis of rotation of the grinding wheel (16) and extending through the workpiece headstock, machine component and tailstock common axis of rotation in such an angle in the plane run to each other, that there is essentially a linear contact between the grinding wheel (16) and the outer contour (17) of the machine component (2) in the sense of a SchrĂ€geinstechschleifens.
10. Verfahren nach einem der AnsprĂŒche 1 bis 9, bei welchem mit der Schleifscheibe (16, 16.1 , 16.2) sowohl Umfangsbereiche als auch StirnflĂ€chen des Maschinenbauteils (2) ge- schliffen werden. 10. The method according to any one of claims 1 to 9, wherein with the grinding wheel (16, 16.1, 16.2) both peripheral regions and end faces of the machine component (2) are ground.
1 1. Verfahren nach einem der AnsprĂŒche 1 bis 10, bei weichem die Reitstock-Holpinole (15) mitlaufend ausgebildet ist. 1 1. A method according to any one of claims 1 to 10, in which the tailstock Holpinole (15) is formed running along.
12. Verfahren nach einem der AnsprĂŒche 1 bis 11 , bei welchem die Schleifbearbeitung des Maschinenbauteils (2) CNC-gesteuert ablĂ€uft. 12. The method according to any one of claims 1 to 11, wherein the grinding machining of the machine component (2) runs under CNC control.
13. Schleifmaschine nach Art einer Universal-Rund-Schleifmaschine und/oder Unrundschleif- maschine zur DurchfĂŒhrung des Verfahrens nach einem der AnsprĂŒche 1 bis 12, bei der die folgenden Merkmale vorgesehen sind: 13. Grinding machine in the manner of a universal round grinding machine and / or non-circular grinding machine for carrying out the method according to one of claims 1 to 12, in which the following features are provided:
a) auf einem Schleiftisch (28) sind ein WerkstĂŒckspindelstock (9, 9.1) und ein Reitstock (10) angeordnet, zwischen denen ein zu schleifendendes Maschinenbautei! (2) auf- spannbar ist, wobei die durch WerkstĂŒckspindelstock (9, 9.1 ), Maschinenbauteil (2) und Reitstock (10) verlaufende gemeinsame LĂ€ngsachse in LĂ€ngsrichtung des Schleiftisches (28) verlĂ€uft;  a) on a grinding table (28) are arranged a workpiece headstock (9, 9.1) and a tailstock (10), between which a machine component to be sanded! (2) can be tensioned, the common longitudinal axis extending through the workpiece headstock (9, 9.1), machine component (2) and tailstock (10) extending in the longitudinal direction of the grinding table (28);
b) der WerkstĂŒckspindelstock (9, 9.1 ) weist ein zentrisch spannendes Spannfutter (11) oder ein Spannfutter (11) mit ausgleichenden lösbaren Spannbacken (12) und einer Zentrierspitze (13, 20.1 ) auf, welche das Maschinenbauteil (2) am WerkstĂŒckspin- delstock (9, 9.1) drehantreibend hĂ€lt;  b) the workpiece headstock (9, 9.1) has a centrically exciting chuck (11) or a chuck (11) with compensating releasable clamping jaws (12) and a centering tip (13, 20.1) on which the machine component (2) on the workpiece spindle stick (9, 9.1) keeps rotating;
c) der Reitstock (10) weist eine Reitstock-Hohlpinole (15) mit einer Hohlspitze (20, 20.2) auf, welche zum zentrierenden Eingriff zumindest in eine rotationssymmetri- sche Innenausnehmung (6) am dem WerkstĂŒckspindelstock (9, 9. ^ gegenĂŒberlie- genden Ende (5) des Maschinenbauteils (2) angepasst ist;  c) the tailstock (10) has a tailstock hollow quill (15) with a hollow point (20, 20.2) which, for the centering engagement, faces at least into a rotationally symmetrical inner recess (6) on the workpiece headstock (9, 9). adapted end (5) of the machine component (2);
d) die Reitstock-Hohlpinole (15) mit der Hohlspitze (20, 20.2) weist eine Innenbohrung auf, welche zum Schleifen der Innenausnehmung (6) von einer durch einen Schleif- spindelstock (18, 18.1 , 25) getragenen Innenschleifscheibe (8, 8.1 ) durchgreifbar ist; und  d) the tailstock hollow quill (15) with the hollow point (20, 20.2) has an inner bore, which for grinding the inner recess (6) by an inner grinding wheel (8, 8.1 ) is tangible; and
e) der WerkstĂŒckspindelstock (9, 9.1 ) und der Reitstock (10) sind relativ zueinander derart bewegbar, dass das Maschinenbauteil (2) zwischen der Zentrierspitze (13, 20.1 ) am WerkstĂŒckspindelstock (9. 9.1) und der Hohlspitze (20, 20.1 ) am Reitstock (10) unter axialem Druck und bei in der Aufspannung unverĂ€nderlicher Bezugsachse gehalten und drehangetrieben ist.  e) the workpiece headstock (9, 9.1) and the tailstock (10) are movable relative to each other such that the machine component (2) between the centering tip (13, 20.1) on the workpiece headstock (9. 9.1) and the hollow tip (20, 20.1) is held on the tailstock (10) under axial pressure and with fixed reference axis fixed in the clamping and is rotationally driven.
14. Schleifmaschine nach Anspruch 13, bei welcher der die Innenschleifscheibe (8, 8.1 ) tra- gende Schleifspindelstock (18, 18.1 ) um eine senkrechte Schwenkachse (24) schwenkbar und auf einem senkrecht zur LĂ€ngsrichtung des Schleiftisches (28) gesteuert verfahrbaren Schlitten (19.1 ) angeordnet ist und zusĂ€tzlich eine zur Rotation angetriebene Schleif- scheibe (16.1 ) mit waagerecht verlaufender Rotationsachse zum Schleifen der Außenkon- tur (17) des Maschinenbauteils (2) aufnimmt. 14. Grinding machine according to claim 13, wherein the grinding wheel head (18, 18.1) supporting the inner grinding wheel (8, 8.1) is pivotable about a vertical pivot axis (24) and slidable on a carriage (19.1 ) and additionally receives a grinding wheel (16.1) driven to rotate with a horizontally extending rotation axis for grinding the outer contour (17) of the machine component (2).
15. Schleifmaschine nach Anspruch 13 oder 14, bei welcher der die Innenschleifscheibe (8, 8.2) tragende Schleifspindelstock (18, 18.1 , 18.2) ein separater Schleifspindelstock (30) im Bereich des Reitstockes (1) und/oder im Bereich des eine Hohlspitze (20.1) aufweisen- den Spannfutters (11 ) ist und die fnnenschleifscheibe (8, 8.1 ) in die innenausnehmung (6) hinein und an deren UmfangsflÀche (7) zustellbar ist. 15. Grinding machine according to claim 13 or 14, wherein the grinding wheel (18, 18.1, 18.2) carrying the inner grinding wheel (8, 8.2) has a separate wheelhead (30) in the area of the tailstock (1) and / or in the region of a hollow point (FIG. 20.1) - the chuck (11) and the fine grinding wheel (8, 8.1) in the inner recess (6) into and on the peripheral surface (7) can be fed.
16. Schleifmaschine nach einem der AnsprĂŒche 13 bis 15, bei welcher die Schleifscheibe (16, 16.1 , 16.2) sowohl an ihrem Urnfang als auch an ihrer StirnflĂ€che mit je einem Schleifbe- lag versehen ist. 16. Grinding machine according to one of claims 13 to 15, wherein the grinding wheel (16, 16.1, 16.2) is provided both at its Urnfang as well as on its end face with a respective Schleifbe-.
17. Schleifmaschine nach einem der AnsprĂŒche 13 bis 16, bei weicher die Innenschleifschei- be (8, 8.1 , 8.2) und die Schleifscheibe (16, 16.1 , 16.2) jeweils einen CBN-Belag aufwei- sen. 17. Grinding machine according to one of claims 13 to 16, in which the inner grinding disc (8, 8.1, 8.2) and the grinding wheel (16, 16.1, 16.2) each have a CBN coating.
18. Schleifmaschine nach einem der AnsprĂŒche 13 bis 17, bei welcher das Spannfutter (11) hohl ausgebildet ist und mittels einer weiteren Innenschleifscheibe (8.1 ) zum Schleifen ei- ner weiteren Innenausnehmung (6.1) am werkstĂŒckspindefstockseitigen Ende (3) des Ma- schinenbauteiis (2) durchgreifbar ist. 18. Grinding machine according to one of claims 13 to 17, wherein the chuck (11) is hollow and by means of a further inner grinding wheel (8.1) for grinding a further inner recess (6.1) on werkstĂŒckspindefstockseitigen end (3) of the maschinenbauteiis ( 2) is tangible.
EP16728343.1A 2015-06-17 2016-06-13 Method and grinding machine for grinding external and internal contours of workpieces in one set-up Active EP3310530B1 (en)

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PCT/EP2016/063472 WO2016202729A1 (en) 2015-06-17 2016-06-13 Method and grinding machine for grinding external and internal contours of workpieces in one set-up

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CN109277885A (en) * 2018-10-15 2019-01-29 ć“ˆć°”æ»šç†ć·„ć€§ć­Š A kind of method for grinding of tungsten carbide coating thin-walled guide tube
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ES2933822T3 (en) 2023-02-14
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BR112017023397B1 (en) 2022-07-12
US10464182B2 (en) 2019-11-05
DE102015211115A1 (en) 2016-12-22
EP3310530B1 (en) 2022-11-09
DE102015211115B4 (en) 2022-11-03
KR102583422B1 (en) 2023-10-04
JP6751417B2 (en) 2020-09-02
US20180169819A1 (en) 2018-06-21
JP2018518379A (en) 2018-07-12
BR112017023397A2 (en) 2018-07-17

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