EP1741514B1 - Apparatus for grinding and/or finishing of a workpiece - Google Patents
Apparatus for grinding and/or finishing of a workpiece Download PDFInfo
- Publication number
- EP1741514B1 EP1741514B1 EP05014721A EP05014721A EP1741514B1 EP 1741514 B1 EP1741514 B1 EP 1741514B1 EP 05014721 A EP05014721 A EP 05014721A EP 05014721 A EP05014721 A EP 05014721A EP 1741514 B1 EP1741514 B1 EP 1741514B1
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- EP
- European Patent Office
- Prior art keywords
- drive
- unit
- workpiece
- oscillating
- oscillating unit
- 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.)
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- 230000033001 locomotion Effects 0.000 claims description 39
- 230000010355 oscillation Effects 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 description 2
- 241001416181 Axis axis Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B35/00—Machines or devices designed for superfinishing surfaces on work, i.e. by means of abrading blocks reciprocating with high frequency
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/16—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces performing a reciprocating movement, e.g. during which the sense of rotation of the working-spindle is reversed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S451/00—Abrading
- Y10S451/91—Ultrasonic
Definitions
- the invention relates to a device for grinding and / or finishing a workpiece received on and / or in at least one workpiece holder, wherein the workpiece and the workpiece holder can be set into an oscillating motion with a drive device and form an oscillating unit or form part of an oscillating unit.
- the object of the present invention is to provide a device for grinding and / or finishing a workpiece received on and / or in at least one workpiece holder, with which high oscillation frequencies are possible.
- the counteracting to the oscillating movement of the oscillating unit counterbalancing unit causes the resulting by the oscillating movement of the workpiece and the workpiece holder inertial forces can be compensated by opposite inertial forces are generated to these inertial forces.
- components adjacent to the oscillating unit and the compensation unit such as a machine bed of the device, are decoupled from vibrations.
- This in turn has the advantage that the environment of the device is vibration-free. It can be achieved at a oscillation of +/- 1.0 mm very high oscillation frequencies in the range of 1500 min -1 .
- the oscillating unit oscillates along a first axis and the compensation unit in a second axis parallel to the first axis.
- the parallelism of the axes ensures that the inertial forces generated by the oscillating movements of the oscillating unit and the compensation unit can be compensated.
- the axles need not be physically trained; the axes are defined by the movement of the respective center of gravity of the oscillating unit and the compensation unit.
- first and the second axis are coaxial with each other. This has the effect that the moments of inertia resulting from the oscillating movements of the oscillating unit and the compensation unit can also compensate each other. As a result, the device according to the invention and its surroundings are completely vibration-free.
- a complete compensation of inertial forces and moments can be achieved in particular if the mass of the oscillating unit is equal to the mass of the compensation unit and if the oscillation stroke of the oscillating unit is equal to the oscillation stroke of the compensation unit.
- the Oszillationshub corresponds to the oscillation amplitude and is for example a few millimeters. It is also possible to generate a complete compensation of the inertial forces, if the mass of the oscillating unit to the mass of the compensation unit is different. In this case, the oscillation strokes can be adjusted accordingly. For example, the mass of the oscillating unit is half the mass of the compensation unit, wherein the oscillation stroke of the oscillating unit corresponds to twice the oscillation stroke of the compensation unit.
- the device according to the invention may comprise a headstock and / or a headstock support, a tailstock and / or a tailstock support and / or a workpiece rotation drive, wherein said components may be part of the oscillating unit. So it is not necessary to reduce the mass of the oscillating unit to a minimum, but also the said components can oscillate together with the workpiece and the at least one workpiece holder.
- the corresponding compensation of the oscillating movement of the thus formed oscillating unit can be effected by a compensation unit whose stroke and / or mass is adjusted accordingly.
- the headstock and the tailstock are arranged on a common carrier, the Part of the oscillating unit is. This is particularly advantageous for small workpieces.
- the term "workpiece holder” is understood to mean a component which is suitable for at least defining the position and / or spatial position of a workpiece to be machined.
- a workpiece holder can be formed for example by a driver of a headstock. It may also be provided as a tip or quill of a tailstock trained workpiece holder.
- the compensation unit may have a compensation body.
- This may for example comprise a plurality of metal plates which are detachably connected to each other.
- the compensating body advantageously has fastening possibilities for further mass bodies.
- the mass of the compensation unit can be adjusted particularly easily by attaching the compensation body, parts thereof or additional massed parts to or on the carrier.
- the compensating body and / or the headstock and / or the tailstock are linearly guided.
- the components mentioned can thus oscillate freely in the longitudinal direction of the linear guide, it being ensured that the components can not build up any vibrations, which are oriented transversely to the longitudinal axis of the guide.
- a linear guide is also suitable for the compensating body carrier and / or the headstock carrier and / or the tailstock carrier and / or the common carrier for headstock and tailstock in order to achieve the stated advantages.
- a linear guide of the mentioned carriers it is possible in a particularly simple manner to adapt the device to the geometry of a workpiece to be machined, in particular to set the distance between the spindle and tailstock.
- linear guide or the linear guides are provided on or in a carrier carriage, which is preferably mounted displaceably relative to a machine bed of the device.
- the drive device which sets the oscillating unit in an oscillating motion also drives the compensation unit. This has the advantage that it is possible to dispense with an additional drive, as a result of which the device has fewer components as a whole.
- an additional drive can be provided, for example, when in particularly heavy workpieces high driving forces are required.
- An embodiment of the invention provides that the drive device and / or the auxiliary drive is designed as a rotary drive or are.
- the drive of the oscillating unit and / or the drive of the compensation unit can be effected by associated connecting rods, the are driven by a common or different crank members.
- the crank members have eccentric to the axis of rotation of the crank member staggered connecting rod bearings.
- the stroke of the oscillating unit and / or the compensation unit is determined by selecting the offset between the connecting rod bearing and the axis of rotation of a crank member and by the length of the connecting rod and its assignment to the oscillating unit or compensation unit.
- crank members are provided for driving the oscillating unit and for driving the compensation unit, whereby it is possible, for example, to spatially decouple the oscillating unit and the compensation unit from each other.
- crank links can be coupled to one another via traction means, friction and / or gears.
- both the drive for the oscillating unit and for the compensation unit can be created with a drive and spaced apart crank members.
- the drive device and / or the auxiliary drive can also have a linear drive, in particular a pneumatically and / or hydraulically actuated cylinder or a linear motor. With such drives, therefore, not a rotary motion is converted into a linear, oscillating motion, but the oscillating motion is generated directly by the linear drive. It is understood that for the drive device and auxiliary drive not the same drive forms must be selected.
- the drive device may be designed as a rotary drive and the auxiliary drive as a linear drive or the auxiliary drive as a rotary drive and the drive device as a linear drive.
- the linear drive has mechanical feed units such as ballscrews, toothed belts and / or toothed racks
- the arrangement of the linear drive and the transmission to the oscillating unit and / or the compensation unit is spatially flexible.
- the linear drive can act along a stroke axis which is coaxial with the axis along which the oscillating unit oscillates and / or coaxial with an axis in which the balance unit oscillates. This has the advantage that can be dispensed with force deflection elements.
- the linear drive can also act along a lifting axis, which acts at an angle, in particular perpendicular to the oscillation axes of the oscillating unit and / or the compensation unit. This can be particularly advantageous if, for example, for very long workpieces, in the longitudinal direction of the workpiece, the available space is limited.
- the linear drive can have a rotary push-type joint which drives the oscillating unit and / or the compensation unit via one or more push rods.
- the linear motion of the Linear drive are easily redirected in a different direction.
- the oscillating unit and the compensation unit are motion-coupled with one another via movement transmission elements, in particular via levers, toothed racks, pinions, toothed belts or scissors gear.
- movement transmission elements in particular via levers, toothed racks, pinions, toothed belts or scissors gear.
- This makes it possible to provide only one drive device which, for example, drives the oscillating unit. The movement is then transferred to the compensation unit via the movement transfer elements.
- the compensation unit is driven by the drive device and the oscillating unit is driven by the compensation unit via the motion transmission elements.
- a drive device acts on the motion transmission elements, which in turn drive the oscillating unit at one end and the compensation unit at the other end.
- a device for grinding and / or Finishen a workpiece is generally designated by the reference numeral 2.
- the device 2 has a headstock side 4 shown on the left hand and a tailstock side 6 shown on the right hand. Between the headstock side 4 and tailstock side 6, an elongate workpiece 8 is received.
- the workpiece 8 can be processed grinding and / or finishing, if not shown grinding and / or finishing agent, such as tapes or stones in direction designated 9 on the workpiece 8 press.
- the headstock page 4 has a machine bed 10, with the headstock side 4 relative to the environment of Device 2 can be fixed.
- a feed device 12 is provided, which is designed as a lifting cylinder.
- a carrier carriage 14 can be delivered in the direction of the tailstock side 6 or in a direction away from the tailstock side 6 direction.
- the support carriage 14 has a linear guide 15, with which the carrier carriage 14 is guided relative to the machine bed 10.
- a plate-shaped headstock support 16 is arranged, which is also mounted relative to the tailstock side 6 slidably.
- the headstock support 16 is used to arrange a headstock 18, in which a spindle, not shown, is provided.
- This spindle is driven in rotation by means of a workpiece rotation drive 20.
- the spindle has on the workpiece 8 side facing a workpiece holder 22, which is designed as a driver. With the aid of the workpiece rotational drive 20, the workpiece holder 22 can rotate the workpiece 8 so that it rotates about a workpiece axis 24 (both directions of rotation are possible, see reference numeral 26).
- the workpiece 8 is mounted on the tailstock side 6 in a further, formed as a tip workpiece holder 28.
- the workpiece holder 28 is rotatably mounted in a tailstock 30, which in turn is arranged on a tailstock support 32.
- the tailstock support 32 is displaceable relative to a machine bed 36 parallel to the workpiece axis 24 via linear guides 34.
- the tailstock carrier 32 and thus the tailstock 30 can be driven by a linear drive 38.
- the linear drive 38 has one with the tailstock support 32nd connected to reciprocating piston 40, which is guided in a cylinder 42.
- the cylinder 42 is supported on a boom 44 of the machine bed 36 and is supplied hydraulically via lines 46.
- the position of the reciprocating piston 40 and thus of the tailstock carrier 32, the tailstock 30 and the tip 28 can be detected by a position detection system 48 shown only schematically.
- a further plate-shaped support 50 is arranged on the support carriage 14 on the side facing away from the tailstock side 6 of the headstock 18.
- This carrier 50 can be moved in directions parallel to the workpiece axis 24 in the direction of the tailstock side 6 or away.
- the carrier 50 not shown linear guides, which are arranged parallel to the workpiece axis 24.
- a generally designated 52 compensating body is attached on the carrier 50. This has two, substantially vertically extending plates 54 and 56 which are arranged on both sides of the workpiece rotational drive 20. The plates 54 and 56 are interconnected by a substantially horizontal plate 58.
- a drive device 60 is further provided, with which the headstock support 16 and the carrier 50 are driven to oscillate. This will be explained below with reference to the FIGS. 2 to 5 described.
- FIG. 2 the headstock page 4 is shown in a plan view.
- the drive device 60 has a crank member 62, which via an in FIG. 3 lower bearing 64 and an in FIG. 3 upper bearing 66 is rotatably mounted in the drive device 60.
- the crank member 62 has a first connecting rod bearing 68 for a connecting rod 70, which also in Figures 2 and 1 is shown.
- the connecting rod 70 is connected via a bolt element 72 with the headstock support 16 in connection.
- a second connecting rod bearing 74 for a second connecting rod 76 is provided adjacent to the first connecting rod bearing 68.
- the second connecting rod 76 is also in FIG. 2 shown.
- the second connecting rod 76 is connected via a second bolt element 78 with the carrier 50 for the compensation body 52 in connection.
- the angular offset of the connecting rod bearings 68 and 74 relative to the crank member 62 is 180 °.
- FIG. 3 shown construction is in FIGS. 4 and 5 shown schematically, the reference numerals have been correspondingly from the FIGS. 1 to 3 accepted.
- the support carriage 14 is shown only schematically as a stationary storage.
- the linear actuator 38 has also been shown as a spring.
- This in FIG. 4 schematically illustrated crank member 62 may rotate about a rotational axis 80 upon actuation of the drive device 60.
- the first connecting rod bearing 68 of the connecting rod 70 is offset relative to this axis of rotation 80 by a dimension 82.
- the second connecting rod bearing 74 for the connecting rod 76 is offset by the dimension 84 from the axis of rotation 80.
- the crank member 62 rotates, this rotational movement is about Connecting rod 70 and the bolt member 72 is transmitted to the headstock support 16 which is slidably mounted relative to the support carriage 14, so that the headstock support 16 performs an oscillating movement designated 86.
- the headstock support 16 can perform a forward stroke designated 86a in the direction of the tailstock side 6, to which a return stroke 86b connects.
- the advance stroke 86a and the return stroke 86b correspond to the oscillation stroke and is twice the offset 82.
- the rotation of the crank member 62 and the connecting rod 76 is driven, which drives the carrier 50 for the compensation body 52 via the bolt member 78.
- the rotation of the crank member 62 is thus transferred into an oscillating movement 88 of the carrier 50 with the compensation body 52.
- the carrier 50 with the compensating body 52 can execute a forward stroke 88a directed toward the tailstock side 6 or a return stroke 88b.
- the pre-stroke 88a and the return stroke 88b correspond to the oscillation stroke of the carrier 50. This is twice the offset 84th
- the headstock support 16, the headstock 18, the workpiece rotation drive 20, the workpiece holder 22, the workpiece 8, the workpiece holder 28, the tailstock 30 and the tailstock support 32 form an oscillating unit, which in the FIGS. 4 and 5 generally designated by reference numeral 96.
- This unit 96 is driven by the drive device 60.
- the linear drive 38 is biased so that it builds up a clamping force in the FIG. 1 is designated by the reference numeral 90 and acts in the direction of the workpiece 8.
- the carrier 50 and the compensation body 52 form a compensation unit, which in the FIGS. 4 and 5 generally designated by reference numeral 94.
- a compensation unit which in the FIGS. 4 and 5 generally designated by reference numeral 94.
- the movement of the oscillating unit 96 and the compensation unit 94 are in opposite directions.
- the oscillating unit 96 performs a preliminary stroke 86a
- the balancing unit 94 simultaneously performs a return stroke 88b. If, on further rotation of the crank member 62, the oscillating unit 96 then performs a return stroke 86b, the compensation unit 94 moves counter-clockwise with a preliminary stroke 88a.
- the carrier 50 and the balancing body 52 oscillate along a in FIGS. 1 and 2
- the axis 92 is arranged coaxially to the workpiece axis 24, in which the oscillation movement 86 of the oscillating unit 96 takes place.
- the oscillation stroke of the oscillating unit 96 is equal to the oscillation stroke of the balancing unit 94.
- the oscillating unit 96 has the same mass as the compensation unit 94.
- the workpiece 8 is part of the oscillating unit 96. If another workpiece is to be machined, that has a different weight has, the compensation unit 94 accordingly be adjusted by the balance body 52 is added or removed weight accordingly.
- a crank member 62 is provided, which is rotatably driven by a drive device, not shown, to drive via a connecting rod 76 a total of 94 designated compensation unit oscillating.
- the crank member 62 acts via a connecting rod 70 in an oscillating unit generally designated by reference numeral 96.
- This has an elongated support 98, which compared to the device according to FIGS. 1 to 5 the headstock support 16 used there and the tailstock support 32 replaced.
- On the common support 98 of the headstock 18 and the tailstock 30 is attached.
- the tailstock 30 is displaceable relative to the common carrier 98, which is indicated by the double arrow 100.
- the embodiment according to FIG. 7 is similar to the embodiment according to FIGS. 1 to 5 ,
- the in the FIGS. 7 shown oscillating unit 96 corresponds to the oscillating unit according to FIG. 5 consisting of headstock support 16, headstock 18, workpiece holder 22, workpiece 8, tip 28, tailstock 30 and tailstock support 32.
- Balancing unit 94 shown on the left can, as in FIG. 5 represented, composed of a carrier 50 and a compensation body 52.
- FIG. 7 drives a drive device, not shown, a first crank member 62, which via a connecting rod 70, the oscillating unit 96 in set an oscillating motion.
- a second crank member 102 is provided which is driven by a trained as a belt drive traction means 104 from the first crank member 62.
- the crank member 102 via the connecting rod 76 to set the compensation unit in an oscillating motion, which is opposite to the oscillating movement of the oscillating unit 96.
- crank member 102 is also provided.
- Each crank member 62 and 102 is driven by its own drive, that is, the crank member 62 of a not further shown drive device 60 and the crank member 102 of an auxiliary drive 106 not shown.
- the execution according to FIG. 8 has the advantage that a spatial separation between the oscillating unit 96 and the compensation unit 94 can take place. However, it is necessary to coordinate the actuators 60 and 106 to each other via suitable control so that the movement of the balancing unit 94 to move the oscillating unit 96 is in opposite directions.
- FIG. 9 a compensation unit indicated generally by the reference numeral 94 and an oscillating unit as a whole by the reference numeral 96.
- the drive of the oscillating unit 96 via a first linear actuator 108, which forms the driving device for the oscillating unit 96.
- an additional drive in the form of a second linear drive 110 is provided for the drive of the compensation unit 94.
- the linear actuators 108 and 110 may, for example, by hydraulic be formed actuated cylinder.
- Only one linear actuator 108 is required as a drive device. This drives via a rotary thrust joint 112 to a first push rod 114, which acts on an oscillating unit 96. Via a second push rod 116, the rotary push joint acts on a compensation unit 94.
- FIG. 11 an embodiment in which the drive device of an oscillating unit 96 is formed by a linear drive 108.
- This drives a headstock support 16 oscillating and coaxial with a workpiece axis 24.
- the headstock support 16 has a rotary pushrod 118 which is coupled to a lever 120.
- the lever 120 has a stationary to the length of the lever 120 fixed support 122.
- On the opposite side of the rotary push link 118, the lever 120 has a further rotary push joint 124, which is provided on the carrier 50 of the compensation unit 94.
- the drive of the compensation unit is thus causally by the linear drive 108, but with the interposition of the oscillating unit 96.
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Description
Die Erfindung betrifft eine Vorrichtung zum Schleifen und/oder Finishen eines an und/oder in mindestens einer Werkstückaufnahme aufgenommenen Werkstücks, wobei das Werkstück und die Werkstückaufnahme mit einer Antriebsvorrichtung in eine oszillierende Bewegung versetzbar sind und eine oszillierende Einheit bilden oder Teil einer oszillierenden Einheit sind.The invention relates to a device for grinding and / or finishing a workpiece received on and / or in at least one workpiece holder, wherein the workpiece and the workpiece holder can be set into an oscillating motion with a drive device and form an oscillating unit or form part of an oscillating unit.
Mit einer solchen Vorrichtung können Werkstückoberflächen hoher und höchster Qualität erzeugt werden, indem die oszillierend angetriebenen Werkstücke mit Hilfe von Schleifscheiben, -bändern- oder -steinen und/oder mit Hilfe von Finishscheiben, -bändern oder -steinen bearbeitet werden. Um eine kurze Bearbeitungsdauer und/oder eine möglichst hohe Oberflächenqualität zu erzielen, ist es gewünscht, dass das Werkstück mit einer möglichst hohen Frequenz oszilliert.With such a device, workpiece surfaces of high and highest quality can be produced by machining the oscillating driven workpieces with the aid of grinding wheels, belts or stones and / or with the aid of finish disks, belts or stones. For a short processing time and / or a To achieve the highest possible surface quality, it is desired that the workpiece oscillates with the highest possible frequency.
Bei den bekannten Vorrichtungen besteht das Problem, dass bei hohen Oszillationsfrequenzen starke Vibrationen entstehen, die in die Vorrichtung zum Schleifen und/oder Finishen eines Werkstücks und schließlich in die Umgebung der Vorrichtung eingeleitet werden. Man kann das Maschinenbett besonders steif und schwer auszuführen, um die in die Umgebung der Vorrichtung eingeleiteten Vibrationen zu verringern. Dies führt jedoch zu schweren und somit schlecht handhabbaren und zudem teuren Vorrichtungen.In the known devices there is the problem that at high oscillation frequencies strong vibrations are generated, which are introduced into the apparatus for grinding and / or finishing a workpiece and finally into the environment of the device. The machine bed can be made particularly stiff and heavy in order to reduce the vibrations introduced into the environment of the device. However, this leads to heavy and thus difficult to handle and also expensive devices.
Aus der
Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine Vorrichtung zum Schleifen und/oder Finishen eines an und/oder in mindestens eine Werkstückaufnahme aufgenommenen Werkstücks zu schaffen, mit der hohe Oszillationsfrequenzen möglich sind.Proceeding from this, the object of the present invention is to provide a device for grinding and / or finishing a workpiece received on and / or in at least one workpiece holder, with which high oscillation frequencies are possible.
Diese Aufgabe wird mit einer Vorrichtung gemäß Anspruch 1 gelöst, wobei mindestens eine Ausgleichseinheit vorgesehen ist, die gegenläufig zur oszillierenden Bewegung der oszillierenden Einheit antreibbar ist.This object is achieved with a device according to claim 1, wherein at least one compensation unit is provided, which is drivable in opposite directions to the oscillating movement of the oscillating unit.
Die zur oszillierenden Bewegung der oszillierenden Einheit gegenläufig angetriebene Ausgleichseinheit bewirkt, dass die durch die oszillierende Bewegung des Werkstücks und der Werkstückaufnahme entstehenden Trägheitskräfte kompensiert werden können, indem zu diesen Trägheitskräften entgegengesetzte Trägheitskräfte erzeugt werden. Dies führt dazu, dass an die oszillierende Einheit und die Ausgleichseinheit angrenzende Bauteile, wie beispielsweise ein Maschinenbett der Vorrichtung, von Vibrationen entkoppelt sind. Dies wiederum hat den Vorteil, dass auch die Umgebung der Vorrichtung vibrationsfrei ist. Dabei können bei einem Oszillationshub von +/- 1,0 mm sehr hohe Oszillationsfrequenzen im Bereich von 1500 min-1 erreicht werden.The counteracting to the oscillating movement of the oscillating unit counterbalancing unit causes the resulting by the oscillating movement of the workpiece and the workpiece holder inertial forces can be compensated by opposite inertial forces are generated to these inertial forces. As a result, components adjacent to the oscillating unit and the compensation unit, such as a machine bed of the device, are decoupled from vibrations. This in turn has the advantage that the environment of the device is vibration-free. It can be achieved at a oscillation of +/- 1.0 mm very high oscillation frequencies in the range of 1500 min -1 .
Nach einer vorteilhaften Weiterbildung der Erfindung oszilliert die oszillierende Einheit entlang einer ersten Achse und die Ausgleichseinheit in einer zur ersten Achse parallelen zweiten Achse. Durch die Parallelität der Achsen ist gewährleistet, dass sich die durch die oszillierenden Bewegungen der oszillierenden Einheit und der Ausgleichseinheit erzeugten Trägheitskräfte ausgleichen können. Die Achsen müssen nicht körperlich ausgebildet sein; die Achsen definieren sich durch die Bewegung der jeweiligen Massenschwerpunkte der oszillierenden Einheit und der Ausgleichseinheit.According to an advantageous development of the invention, the oscillating unit oscillates along a first axis and the compensation unit in a second axis parallel to the first axis. The parallelism of the axes ensures that the inertial forces generated by the oscillating movements of the oscillating unit and the compensation unit can be compensated. The axles need not be physically trained; the axes are defined by the movement of the respective center of gravity of the oscillating unit and the compensation unit.
Besonders vorteilhaft ist es, wenn die erste und die zweite Achse zueinander koaxial sind. Dies bewirkt, dass sich auch die durch die oszillierenden Bewegungen der oszillierenden Einheit und der Ausgleichseinheit entstehenden Trägheitsmomente gegenseitig kompensieren können. Dies führt dazu, dass die erfindungsgemäße Vorrichtung und deren Umgebung vollkommen vibrationsfrei sind.It is particularly advantageous if the first and the second axis are coaxial with each other. This has the effect that the moments of inertia resulting from the oscillating movements of the oscillating unit and the compensation unit can also compensate each other. As a result, the device according to the invention and its surroundings are completely vibration-free.
Ein vollständiger Ausgleich von Trägheitskräften und - momenten kann insbesondere dann erreicht werden, wenn die Masse der oszillierenden Einheit gleich der Masse der Ausgleichseinheit ist und wenn der Oszillationshub der oszillierenden Einheit gleich dem Oszillationshub der Ausgleichseinheit ist. Der Oszillationshub entspricht der Oszillationsamplitude und beträgt beispielsweise wenige Millimeter. Es ist auch möglich, einen vollständigen Ausgleich der Trägheitskräfte zu erzeugen, wenn die Masse der oszillierenden Einheit zur Masse der Ausgleichseinheit unterschiedlich ist. In diesem Fall können die Oszillationshübe entsprechend angepasst werden. Beispielsweise beträgt die Masse der oszillierenden Einheit die Hälfte der Masse der Ausgleichseinheit, wobei der Oszillationshub der oszillierenden Einheit dem zweifachen Oszillationshub der Ausgleichseinheit entspricht.A complete compensation of inertial forces and moments can be achieved in particular if the mass of the oscillating unit is equal to the mass of the compensation unit and if the oscillation stroke of the oscillating unit is equal to the oscillation stroke of the compensation unit. The Oszillationshub corresponds to the oscillation amplitude and is for example a few millimeters. It is also possible to generate a complete compensation of the inertial forces, if the mass of the oscillating unit to the mass of the compensation unit is different. In this case, the oscillation strokes can be adjusted accordingly. For example, the mass of the oscillating unit is half the mass of the compensation unit, wherein the oscillation stroke of the oscillating unit corresponds to twice the oscillation stroke of the compensation unit.
Die erfindungsgemäße Vorrichtung kann einen Spindelstock und/oder einen Spindelstockträger, einen Reitstock und/oder einen Reitstockträger und/oder einen Werkstück-Rotationsantrieb aufweisen, wobei die genannten Bauteile Teil der oszillierenden Einheit sein können. Es ist also nicht notwendig, die Masse der oszillierenden Einheit auf ein Minimum zu reduzieren, vielmehr können auch die genannten Bauteile zusammen mit dem Werkstück und der mindestens einen Werkstückaufnahme oszillieren. Der entsprechende Ausgleich der oszillierenden Bewegung dieser solchermaßen gebildeten oszillierenden Einheit kann durch eine Ausgleichseinheit erfolgen, deren Hub und/oder Masse entsprechend angepasst ist.The device according to the invention may comprise a headstock and / or a headstock support, a tailstock and / or a tailstock support and / or a workpiece rotation drive, wherein said components may be part of the oscillating unit. So it is not necessary to reduce the mass of the oscillating unit to a minimum, but also the said components can oscillate together with the workpiece and the at least one workpiece holder. The corresponding compensation of the oscillating movement of the thus formed oscillating unit can be effected by a compensation unit whose stroke and / or mass is adjusted accordingly.
Es ist auch möglich, dass der Spindelstock und der Reitstock auf einem gemeinsamen Träger angeordnet sind, der Teil der oszillierenden Einheit ist. Dies ist insbesondere bei kleinen Werkstücken vorteilhaft.It is also possible that the headstock and the tailstock are arranged on a common carrier, the Part of the oscillating unit is. This is particularly advantageous for small workpieces.
Im Rahmen dieser Erfindung wird unter Werkstückaufnahme ein Bauteil verstanden, das geeignet ist, die Position und/oder Raumlage eines zu bearbeiteten Werkstücks zumindest mit zu definieren. Eine solche Werkstückaufnahme kann beispielsweise durch einen Mitnehmer eines Spindelstocks gebildet sein. Es kann auch eine als Spitze oder Pinole eines Reitstocks ausgebildete Werkstückaufnahme vorgesehen sein. Für solche Werkstückaufnahmen ist es vorteilhaft, wenn sie in Richtung auf das Werkstück passiv nachführbar, insbesondere feder- und/oder kolbenbeaufschlagt sind. Hierdurch können insbesondere längliche Werkstücke an einem Ende oszillierend angetrieben werden, während das andere Ende passiv nachgeführt werden kann, ohne dass ein weiterer Antrieb erforderlich ist.In the context of this invention, the term "workpiece holder" is understood to mean a component which is suitable for at least defining the position and / or spatial position of a workpiece to be machined. Such a workpiece holder can be formed for example by a driver of a headstock. It may also be provided as a tip or quill of a tailstock trained workpiece holder. For such workpiece holders, it is advantageous if they are passively trackable in the direction of the workpiece, in particular spring and / or piston-loaded. As a result, in particular elongate workpieces can be driven to oscillate at one end, while the other end can passively be tracked without requiring a further drive.
Die Ausgleichseinheit kann einen Ausgleichskörper aufweisen. Dieser kann beispielsweise mehrere Metallplatten umfassen, die lösbar miteinander verbunden sind. Der Ausgleichskörper weist in vorteilhafter Weise Befestigungsmöglichkeiten für weitere Massekörper auf.The compensation unit may have a compensation body. This may for example comprise a plurality of metal plates which are detachably connected to each other. The compensating body advantageously has fastening possibilities for further mass bodies.
Wenn die Ausgleichseinheit einen Ausgleichskörperträger aufweist, kann die Masse der Ausgleichseinheit besonders einfach eingestellt werden, indem der Ausgleichskörper, Teile davon oder zusätzliche massebehaftete Teile an oder auf dem Träger befestigt werden.If the compensation unit has a compensation body carrier, the mass of the compensation unit can be adjusted particularly easily by attaching the compensation body, parts thereof or additional massed parts to or on the carrier.
In vorteilhafter Weise sind der Ausgleichskörper und/oder der Spindelstock und/oder der Reitstock linear geführt. Die genannten Bauteile können somit in Längsrichtung der Linearführung frei oszillieren, wobei sichergestellt ist, dass die Bauteile dabei keine Schwingungen aufbauen können, die quer zur Längsachse der Führung orientiert sind. Eine Linearführung bietet sich auch für den Ausgleichskörperträger und/oder der Spindelstockträger und/oder den Reitstockträger und/oder den gemeinsamen Träger für Spindelstock und Reitstock an, um die genannten Vorteile zu erzielen. Bei Linearführung der genannten Träger ist es in besonders einfacher Art möglich, die Vorrichtung an die Geometrie eines zu bearbeitenden Werkstücks anzupassen, insbesondere den Abstand zwischen Spindel- und Reitstock einzustellen.Advantageously, the compensating body and / or the headstock and / or the tailstock are linearly guided. The components mentioned can thus oscillate freely in the longitudinal direction of the linear guide, it being ensured that the components can not build up any vibrations, which are oriented transversely to the longitudinal axis of the guide. A linear guide is also suitable for the compensating body carrier and / or the headstock carrier and / or the tailstock carrier and / or the common carrier for headstock and tailstock in order to achieve the stated advantages. In the case of a linear guide of the mentioned carriers, it is possible in a particularly simple manner to adapt the device to the geometry of a workpiece to be machined, in particular to set the distance between the spindle and tailstock.
Eine noch größere Flexibilität wird erreicht, wenn die Linearführung oder die Linearführungen an oder in einem Trägerschlitten vorgesehen sind, der vorzugsweise relativ zu einem Maschinenbett der Vorrichtung verschiebbar gelagert ist.An even greater flexibility is achieved if the linear guide or the linear guides are provided on or in a carrier carriage, which is preferably mounted displaceably relative to a machine bed of the device.
Es ist im Rahmen dieser Erfindung möglich, dass die Antriebsvorrichtung, die die oszillierende Einheit in eine oszillierende Bewegung versetzt, auch die Ausgleichseinheit antreibt. Dies hat den Vorteil, dass auf einen zusätzlichen Antrieb verzichtet werden kann, wodurch die Vorrichtung insgesamt weniger Bauteile aufweist.It is possible in the context of this invention that the drive device which sets the oscillating unit in an oscillating motion, also drives the compensation unit. This has the advantage that it is possible to dispense with an additional drive, as a result of which the device has fewer components as a whole.
Für den Antrieb der Ausgleichseinheit kann aber auch ein Zusatzantrieb vorgesehen sein, beispielsweise wenn bei besonders schweren Werkstücken hohe Antriebskräfte erforderlich sind.For the drive of the compensation unit but also an additional drive can be provided, for example, when in particularly heavy workpieces high driving forces are required.
Eine Ausführungsform der Erfindung sieht vor, dass die Antriebsvorrichtung und/oder der Zusatzantrieb als Drehantrieb ausgebildet ist oder sind. Insbesondere mit einem solchen Drehantrieb kann der Antrieb der oszillierenden Einheit und/oder der Antrieb der Ausgleichseinheit durch zugeordnete Pleuel erfolgen, die von einem gemeinsamen oder verschiedenen Kurbelgliedern angetrieben sind. Die Kurbelglieder weisen exzentrisch zur Rotationsachse des Kurbelglieds versetzte Pleuellager auf. Der Hub der oszillierenden Einheit und/oder der Ausgleichseinheit wird durch Auswahl des Versatzes zwischen Pleuellager und der Drehachse eines Kurbelglieds und durch die Länge des Pleuels sowie dessen Zuordnung zur oszillierenden Einheit beziehungsweise zur Ausgleichseinheit bestimmt.An embodiment of the invention provides that the drive device and / or the auxiliary drive is designed as a rotary drive or are. In particular, with such a rotary drive, the drive of the oscillating unit and / or the drive of the compensation unit can be effected by associated connecting rods, the are driven by a common or different crank members. The crank members have eccentric to the axis of rotation of the crank member staggered connecting rod bearings. The stroke of the oscillating unit and / or the compensation unit is determined by selecting the offset between the connecting rod bearing and the axis of rotation of a crank member and by the length of the connecting rod and its assignment to the oscillating unit or compensation unit.
Wenn ein gemeinsames Kurbelglied für die verschiedenen Pleuel, die jeweils die oszillierende Einheit beziehungsweise die Ausgleichseinheit antreiben, vorgesehen ist, kann ein besonders einfacher Antrieb für die oszillierende Einheit und die Ausgleichseinheit gebildet werden.When a common crank member is provided for the various connecting rods driving the oscillating unit and the balancing unit, respectively, a particularly simple drive for the oscillating unit and the balancing unit can be formed.
Es ist aber auch möglich, dass für den Antrieb der oszillierenden Einheit und für den Antrieb der Ausgleichseinheit verschiedene Kurbelglieder vorgesehen sind, wodurch es beispielsweise möglich ist, die oszillierende Einheit und die Ausgleichseinheit räumlich voneinander zu entkoppeln.But it is also possible that different crank members are provided for driving the oscillating unit and for driving the compensation unit, whereby it is possible, for example, to spatially decouple the oscillating unit and the compensation unit from each other.
Wenn für die verschiedenen Kurbelglieder nicht jeweils eigene Antriebe vorgesehen sind, können die Kurbelglieder über zugmittel, Reibung und/oder Zahnräder miteinander gekoppelt sein. Somit kann mit einem Antrieb und räumlich voneinander entfernten Kurbelgliedern sowohl der Antrieb für die oszillierende Einheit als auch für die Ausgleichseinheit geschaffen werden.If separate drives are not provided for each of the various crank links, the crank links can be coupled to one another via traction means, friction and / or gears. Thus, both the drive for the oscillating unit and for the compensation unit can be created with a drive and spaced apart crank members.
Die Antriebsvorrichtung und/oder der Zusatzantrieb können auch einen Linearantrieb aufweisen, insbesondere einen pneumatisch und/oder hydraulisch betätigten Zylinder oder einen Linearmotor. Mit solchen Antrieben wird also nicht eine Drehbewegung in eine lineare, oszillierende Bewegung umgesetzt, sondern die oszillierende Bewegung wird direkt durch den Linearantrieb erzeugt. Es versteht sich, dass für Antriebsvorrichtung und Zusatzantrieb nicht die gleichen Antriebsformen gewählt werden müssen. So kann beispielsweise die Antriebsvorrichtung als Drehantrieb ausgebildet sein und der Zusatzantrieb als Linearantrieb oder der Zusatzantrieb als Drehantrieb und die Antriebsvorrichtung als Linearantrieb.The drive device and / or the auxiliary drive can also have a linear drive, in particular a pneumatically and / or hydraulically actuated cylinder or a linear motor. With such drives, therefore, not a rotary motion is converted into a linear, oscillating motion, but the oscillating motion is generated directly by the linear drive. It is understood that for the drive device and auxiliary drive not the same drive forms must be selected. For example, the drive device may be designed as a rotary drive and the auxiliary drive as a linear drive or the auxiliary drive as a rotary drive and the drive device as a linear drive.
Wenn der Linearantrieb mechanische Vorschubeinheiten wie Kugelrollspindeln, Zahnriemen und/oder Zahnstangen aufweist, ist die Anordnung des Linearantriebs und die Übertragung auf die oszillierende Einheit und/oder die Ausgleichseinheit räumlich flexibel.If the linear drive has mechanical feed units such as ballscrews, toothed belts and / or toothed racks, the arrangement of the linear drive and the transmission to the oscillating unit and / or the compensation unit is spatially flexible.
Der Linearantrieb kann entlang einer Hubachse wirken, die koaxial zu der Achse ist, entlang der die oszillierende Einheit oszilliert und/oder koaxial ist zu einer Achse, in der die Ausgleichseinheit oszilliert. Dies hat den Vorteil, dass auf Kraftumlenkungselemente verzichtet werden kann.The linear drive can act along a stroke axis which is coaxial with the axis along which the oscillating unit oscillates and / or coaxial with an axis in which the balance unit oscillates. This has the advantage that can be dispensed with force deflection elements.
Der Linearantrieb kann aber auch entlang einer Hubachse wirken, die winklig, insbesondere senkrecht zu den Oszillationsachsen der oszillierenden Einheit und/oder der Ausgleichseinheit wirkt. Dies kann insbesondere dann von Vorteil sein, wenn, beispielsweise bei besonders langen Werkstücken, in Längsrichtung des Werkstücks der zur Verfügung stehende Bauraum begrenzt ist. Bei einer solchen Konstruktion kann der Linearantrieb ein Drehschubgelenk aufweisen, das über eine oder mehrere Schubstangen die oszillierende Einheit und/oder die Ausgleichseinheit antreibt. Somit kann die lineare Bewegung des Linearantriebs auf einfache Weise in eine andere Richtung umgeleitet werden.However, the linear drive can also act along a lifting axis, which acts at an angle, in particular perpendicular to the oscillation axes of the oscillating unit and / or the compensation unit. This can be particularly advantageous if, for example, for very long workpieces, in the longitudinal direction of the workpiece, the available space is limited. With such a construction, the linear drive can have a rotary push-type joint which drives the oscillating unit and / or the compensation unit via one or more push rods. Thus, the linear motion of the Linear drive are easily redirected in a different direction.
Es ist im Rahmen dieser Erfindung auch möglich, dass die oszillierende Einheit und die Ausgleichseinheit über Bewegungsübertragungselemente, insbesondere über Hebel, Zahnstangen, Ritzel, Zahnriemen oder Scherengetriebe miteinander bewegungsgekoppelt sind. Dies ermöglicht es, nur eine Antriebsvorrichtung vorzusehen, die beispielsweise die oszillierende Einheit antreibt. Über die Bewegungsübertragungselemente wird die Bewegung dann auf die Ausgleichseinheit übertragen. Es ist aber auch möglich, dass die Ausgleichseinheit von der Antriebsvorrichtung angetrieben wird und die oszillierende Einheit von der Ausgleichseinheit über die Bewegungsübertragungselemente angetrieben wird. Denkbar ist auch, dass eine Antriebsvorrichtung auf die Bewegungsübertragungselemente wirkt, die wiederum einenends die oszillierende Einheit und anderenends die Ausgleichseinheit antreiben.It is also possible in the context of this invention that the oscillating unit and the compensation unit are motion-coupled with one another via movement transmission elements, in particular via levers, toothed racks, pinions, toothed belts or scissors gear. This makes it possible to provide only one drive device which, for example, drives the oscillating unit. The movement is then transferred to the compensation unit via the movement transfer elements. But it is also possible that the compensation unit is driven by the drive device and the oscillating unit is driven by the compensation unit via the motion transmission elements. It is also conceivable that a drive device acts on the motion transmission elements, which in turn drive the oscillating unit at one end and the compensation unit at the other end.
Bei der Verwendung von den genannten Bewegungsübertragungselementen ist es vorteilhaft, wenn mindestens eine bezüglich der Bewegung der oszillierenden Einheit und der Ausgleichseinheit ortsfeste Lagerstelle vorgesehen ist. Hierdurch kann insbesondere bei längeren Bewegungsübertragungselementen vermieden werden, dass sich diese und/oder die damit in Verbindung stehende oszillierende Einheit und/oder Ausgleichseinheit durch Eigenschwingungen destabilisiert.When using said motion transmission elements, it is advantageous if at least one stationary bearing point with respect to the movement of the oscillating unit and the compensation unit is provided. As a result, it can be avoided, in particular for longer movement transmission elements, that these and / or the oscillating unit and / or compensation unit associated therewith are destabilized by natural oscillations.
Weitere vorteilhafte Ausgestaltungen und Einzelheiten der Erfindung sind der folgenden Beschreibung zu entnehmen, in der die Erfindung anhand der in der Zeichnung dargestellten Ausführungsbeispiele näher beschrieben und erläutert ist.Further advantageous embodiments and details of the invention will be apparent from the following description in which the invention with reference to the embodiments illustrated in the drawings is described and explained in more detail.
Es zeigen:
- Figur 1
- eine perspektivische Ansicht einer erfindungsgemäßen Vorrichtung;
Figur 2- die Vorrichtung gemäß
Figur 1 in einer Draufsicht entsprechend Pfeil II inFigur 1 ; - Figur 3
- die Vorrichtung gemäß
Figur 1 in einem Schnitt entsprechend Pfeilen III in ;Figur 2 - Figur 4
- eine der
Figur 3 entsprechende, schematisierte Darstellung; - Figur 5
- eine der
Figur 2 entsprechende, schematisierte Darstellung; - Figuren 6 - 11
- weitere Ausführungsformen von erfindungsgemäßen Vorrichtungen.
- FIG. 1
- a perspective view of a device according to the invention;
- FIG. 2
- the device according to
FIG. 1 in a plan view according to arrow II inFIG. 1 ; - FIG. 3
- the device according to
FIG. 1 in a section corresponding to arrows III inFIG. 2 ; - FIG. 4
- one of the
FIG. 3 corresponding, schematic representation; - FIG. 5
- one of the
FIG. 2 corresponding, schematic representation; - Figures 6 - 11
- further embodiments of devices according to the invention.
Mit Bezug auf
Die Spindelstockseite 4 weist ein Maschinenbett 10 auf, mit der die Spindelstockseite 4 relativ zur Umgebung der Vorrichtung 2 fixiert werden kann. An dem Maschinenbett 10 ist eine Zustellvorrichtung 12 vorgesehen, die als Hubzylinder ausgebildet ist. Mit der Zustellvorrichtung 12 kann ein Trägerschlitten 14 in Richtung auf die Reitstockseite 6 oder in eine von der Reitstockseite 6 abgewandte Richtung zugestellt werden. Hierfür weist der Trägerschlitten 14 eine Linearführung 15 auf, mit der der Trägerschlitten 14 relativ zum Maschinenbett 10 geführt ist.The headstock page 4 has a
Auf dem Trägerschlitten 14 ist ein plattenförmiger Spindelstockträger 16 angeordnet, der ebenfalls relativ zur Reitstockseite 6 verschieblich gelagert ist. Der Spindelstockträger 16 dient zur Anordnung eines Spindelstocks 18, in dem eine nicht dargestellte Spindel vorgesehen ist. Diese Spindel ist mit Hilfe eines Werkstück-Rotationsantriebs 20 drehend angetrieben. Die Spindel weist auf der dem Werkstück 8 zugewandten Seite eine Werkstückaufnahme 22 auf, die als Mitnehmer ausgebildet ist. Mit Hilfe des Werkstück-Rotationsantriebs 20 kann die Werkstückaufnahme 22 das Werkstück 8 rotierend antreiben, so dass dieses um eine Werkstückachse 24 rotiert (beide Drehrichtungen sind möglich, vgl. Bezugszeichen 26).On the
Das Werkstück 8 ist auf der Reitstockseite 6 in einer weiteren, als Spitze ausgebildeten Werkstückaufnahme 28 gelagert. Die Werkstückaufnahme 28 ist drehbar in einem Reitstock 30 gelagert, der wiederum auf einem Reitstockträger 32 angeordnet ist. Der Reitstockträger 32 ist über Linearführungen 34 relativ zu einem Maschinenbett 36 parallel zur Werkstückachse 24 verschiebbar.The
Der Reitstockträger 32 und somit der Reitstock 30 können von einem Linearantrieb 38 angetrieben werden. Der Linearantrieb 38 weist einen mit dem Reitstockträger 32 verbundenen Hubkolben 40 auf, der in einem Zylinder 42 geführt ist. Der Zylinder 42 stützt sich an einem Ausleger 44 des Maschinenbetts 36 ab und ist hydraulisch über Leitungen 46 versorgt.The
Die Lage des Hubkolbens 40 und somit des Reitstockträgers 32, des Reitstocks 30 und der Spitze 28 kann durch ein nur schematisch dargestelltes Lageerfassungssystem 48 erfasst werden.The position of the
Auf der Spindelstockseite 4 ist auf dem Trägerschlitten 14 auf der der Reitstockseite 6 abgewandten Seite des Spindelstocks 18 ein weiterer plattenförmiger Träger 50 angeordnet. Dieser Träger 50 kann in zu der Werkstückachse 24 parallelen Richtungen in Richtung auf die Reitstockseite 6 oder von dieser weg bewegt werden. Hierfür weist der Träger 50 nicht dargestellte Linearführungen auf, die parallel zur Werkstückachse 24 angeordnet sind. Auf dem Träger 50 ist ein insgesamt mit 52 bezeichneter Ausgleichskörper befestigt. Dieser weist zwei, sich im Wesentlichen vertikal erstreckende Platten 54 und 56 auf, die zu beiden Seiten des Werkstück-Rotationsantriebs 20 angeordnet sind. Die Platten 54 und 56 sind durch eine im Wesentlichen horizontale Platte 58 miteinander verbunden.On the headstock side 4, a further plate-shaped
Auf der Spindelstockseite 4 ist ferner eine Antriebsvorrichtung 60 vorgesehen, mit der der Spindelstockträger 16 und der Träger 50 oszillierend antreibbar sind. Dies wird im Folgenden mit Bezug auf die
In
Zwischen den Lagern 64 und 66 ist benachbart zum ersten Pleuellager 68 ein zweites Pleuellager 74 für ein zweites Pleuel 76 vorgesehen. Das zweite Pleuel 76 ist auch in
Die in
Über die Drehung des Kurbelglieds 62 wird auch das Pleuel 76 angetrieben, das über das Bolzenelement 78 den Träger 50 für den Ausgleichskörper 52 antreibt. Die Drehung des Kurbelglieds 62 wird also in eine oszillierende Bewegung 88 des Trägers 50 mit dem Ausgleichskörper 52 überführt. Der Träger 50 mit dem Ausgleichskörper 52 können einen in Richtung auf die Reitstockseite 6 gerichteten Vorhub 88a oder einen Rückhub 88b ausführen. Der Vorhub 88a und der Rückhub 88b entsprechen dem Oszillationshub des Trägers 50. Dieser beträgt das Doppelte des Versatzes 84.About the rotation of the
Der Spindelstockträger 16, der Spindelstock 18, der Werkstück-Rotationsantrieb 20, die Werkstückaufnahme 22, das Werkstück 8, die Werkstückaufnahme 28, der Reitstock 30 und der Reitstockträger 32 bilden eine oszillierende Einheit, die in den
Der Träger 50 und der Ausgleichskörper 52 bilden eine Ausgleichseinheit, die in den
Der Träger 50 und der Ausgleichskörper 52 oszillieren entlang einer in
In dem in den
Mit Bezug auf
Die Ausführungsform gemäß
Bei der Ausführung gemäß
Bei der Ausführungsform gemäß
Die bisher beschriebenen Antriebsvorrichtungen und Zusatzantriebe waren Drehantriebe. In den
Bei der Ausführungsform gemäß
Schließlich zeigt
Claims (30)
- Apparatus (2) for grinding and/or finishing a workpiece (8) received on and/or in at least one workpiece receptacle (22, 28), wherein the workpiece (8) and the workpiece receptacle (22, 28) can be caused to oscillate in a motion (86) by means of a drive apparatus (60, 108) and form an oscillating unit (96) or are part of an oscillating unit (96), characterised in that at least one compensating unit (94) is provided, which can be driven counter to the oscillating motion (86) of the oscillating unit (96).
- Apparatus (2) according to claim 1, characterised in that the oscillating unit (96) oscillates along a first axis (24) and the compensating unit (94) oscillates in a second axis (92) parallel to the first axis (24).
- Apparatus (2) according to claim 2, characterised in that the first axis (24) and the second axis (92) are coaxial to one another.
- Apparatus (2) according to any one of the preceding claims, characterised in that the mass of the oscillating unit (96) is identical to the mass of the compensating unit (94) and in that the oscillation stroke (82) of the oscillating unit (96) is identical to the oscillation stroke (84) of the compensating unit (94).
- Apparatus (2) according to any one of the preceding claims, characterised in that the apparatus (2) has a spindle head (18) and/or a spindle head support (16), a tail stock (30) and/or a tail stock support (32) and/or a workpiece rotation drive (20), which is or are part of the oscillating unit (96).
- Apparatus (2) according to claim 5, characterised in that the spindle head (18) and the tail stock (30) are arranged on a common support (98) which is part of the oscillating unit (96).
- Apparatus (2) according to either claim 5 or claim 6, characterised in that a workpiece receptacle (22), configured in particular as an entrainment means, is provided on the spindle head (18).
- Apparatus (2) according to any one of claims 5 to 7, characterised in that a workpiece receptacle (28), configured in particular as a point or a quill, is provided on the tail stock (30).
- Apparatus (2) according to any one of the preceding claims, characterised in that a workpiece receptacle (28) can be passively guided, in particular can be acted upon by springs and/or pistons, in the direction of the workpiece (8).
- Apparatus (2) according to any one of the preceding claims, characterised in that the compensating unit (94) has a compensating body (52).
- Apparatus (2) according to any one of the preceding claims, characterised in that the compensating unit (94) has a compensating body support (50).
- Apparatus (2) according to any one of claims 5 to 11, characterised in that the compensating body (52) and/or the spindle head (18) and/or the tail stock (30) is or are guided in a linear manner.
- Apparatus (2) according to any one of claims 5 to 12, characterised in that the compensating body support (50) and/or the spindle head support (16) and/or the tail stock support (32) and/or the common support (98) for the spindle head (18) and the tail stock (30) is or are guided in a linear manner.
- Apparatus (2) according to either claim 12 or claim 13, characterised in that the linear guide means is or are provided on or in a support slide (14).
- Apparatus (2) according to claim 14, characterised in that the support slide (14) is mounted so as to be displaceable relative to a machine bed (10) of the apparatus (2).
- Apparatus (2) according to any one of the preceding claims, characterised in that the drive apparatus (60, 108) drives the compensating unit (94).
- Apparatus (2) according to any one of claims 1 to 15, characterised in that an additional drive (106, 110, 126) is provided to drive the compensating unit (94).
- Apparatus (2) according to any one of the preceding claims, characterised in that the drive apparatus (60) and/or the additional drive (106) has or have a rotary drive.
- Apparatus (2) according to any one of the preceding claims, characterised in that the oscillating unit (96) is driven by means of a connecting bar (70) which is driven by a crank member (62).
- Apparatus (2) according to any one of the preceding claims, characterised in that the compensating unit (94) is driven by means of a connecting bar (76) which is driven by a crank member (62).
- Apparatus (2) according to either claim 19 or claim 20, characterised in that a common crank member (62) is provided to drive the oscillating unit (96) and to drive the compensating unit (94).
- Apparatus (2) according to either claim 19 or claim 20, characterised in that different crank members (62, 102) are provided to drive the oscillating unit (96) and to drive the compensating unit (94).
- Apparatus (2) according to claim 22, characterised in that the crank members (62, 102) are coupled to one another by way of traction means (104), friction and/or gear-wheels.
- Apparatus (2) according to any one of the preceding claims, characterised in that the drive apparatus (108) and/or the additional drive (110) has or have a linear drive means, in particular a pneumatically and/or hydraulically actuated cylinder or a linear motor.
- Apparatus (2) according to claim 24, characterised in that the linear drive means has mechanical feed units, in particular ball screws, toothed belts and/or toothed racks.
- Apparatus (2) according to either claim 24 or claim 25, characterised in that the linear drive means operates along a stroke axis which is coaxial to the first axis and/or the second axis.
- Apparatus (2) according to either claim 24 or claim 25, characterised in that the linear drive means operates along a stroke axis which is at an angle to, in particular perpendicular to, the first axis and/or the second axis.
- Apparatus (2) according to claim 27, characterised in that the linear drive means has a turning and sliding joint which drives the oscillating unit (96) and/or the compensating unit (94) via one or more connecting rods.
- Apparatus (2) according to any one of the preceding claims, characterised in that the oscillating unit (96) and the compensating unit (94) are movably coupled to one another by means of motion transmission elements, in particular via levers (120), toothed racks, pinions, toothed belts or shear gears.
- Apparatus (2) according to claim 29, characterised in that the motion transmission elements have at least one bearing (122) which is stationary with regard to the motion of the oscillating unit (96) and the compensating unit (94).
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE502005003334T DE502005003334D1 (en) | 2005-07-07 | 2005-07-07 | Device for grinding and / or finishing a workpiece |
EP05014721A EP1741514B1 (en) | 2005-07-07 | 2005-07-07 | Apparatus for grinding and/or finishing of a workpiece |
PCT/EP2006/004714 WO2007019897A1 (en) | 2005-07-07 | 2006-05-18 | Device for grinding and/or finishing a workpiece |
CN2006800243793A CN101228003B (en) | 2005-07-07 | 2006-05-18 | Apparatus for grinding and/or finishing a workpiece |
US11/964,118 US7771252B2 (en) | 2005-07-07 | 2007-12-26 | Apparatus for grinding and/or finishing a workpiece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05014721A EP1741514B1 (en) | 2005-07-07 | 2005-07-07 | Apparatus for grinding and/or finishing of a workpiece |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1741514A1 EP1741514A1 (en) | 2007-01-10 |
EP1741514B1 true EP1741514B1 (en) | 2008-03-19 |
Family
ID=35427838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05014721A Ceased EP1741514B1 (en) | 2005-07-07 | 2005-07-07 | Apparatus for grinding and/or finishing of a workpiece |
Country Status (5)
Country | Link |
---|---|
US (1) | US7771252B2 (en) |
EP (1) | EP1741514B1 (en) |
CN (1) | CN101228003B (en) |
DE (1) | DE502005003334D1 (en) |
WO (1) | WO2007019897A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010060471A1 (en) * | 2010-10-07 | 2012-04-12 | Thielenhaus Technologies Gmbh | Machine for finishing workpiece, preferably long workpiece, comprises machine frame, finishing unit for workpieces finishing and two parallel-aligned workpiece holders |
EP2750829B1 (en) | 2011-08-31 | 2016-04-20 | Nagel Maschinen- und Werkzeugfabrik GmbH | Finishing machine for finish machining of curved workpiece surfaces on workpieces |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2823934B1 (en) * | 2013-07-09 | 2015-02-18 | Supfina Grieshaber GmbH & Co. KG | Device for finishing a peripheral area of a workpiece and method for operating the device |
US10702969B2 (en) | 2016-06-23 | 2020-07-07 | Western Digital Technologies, Inc. | Actuator tilt interposer for within-row lapping mount tool for magnetic recording read-write heads |
JP6788245B2 (en) * | 2016-08-08 | 2020-11-25 | 株式会社ジェイテクト | Push stand |
US11440154B2 (en) * | 2017-11-28 | 2022-09-13 | Samtech International, Inc. | System and method for polishing metal surface |
CN111148599B (en) * | 2017-12-19 | 2021-09-10 | 西部数据技术公司 | Abrasive tool assembly, method of using same, and abrasive tool actuator insert |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1235975A (en) * | 1959-05-06 | 1960-07-15 | Saint Gobain | Method and device for balancing a rotating body |
US4136487A (en) * | 1977-11-21 | 1979-01-30 | Khokhulin Vladimir N | Arrangement for abrasive machining of shaped surfaces |
DD138162B1 (en) * | 1978-07-13 | 1980-12-10 | Peter Marx | DEVICE FOR GENERATING SHORT-TERM SWING MOVEMENTS |
US4685333A (en) * | 1984-09-17 | 1987-08-11 | Wilson Louis D | Work station for working on workpieces for a plurality of operations |
DE3919359C1 (en) * | 1989-06-14 | 1990-02-22 | Maschinenfabrik Ernst Thielenhaus Gmbh, 5600 Wuppertal, De | Grinding machine tool support with linear tool holder - has inner eccentric bush, holding vibration axis bush in its bore |
US5371973A (en) * | 1992-09-30 | 1994-12-13 | Western Atlas Inc. | Grinding machine utilizing multiple, parallel, abrasive belts simultaneously grinding surfaces on a workpiece |
DE4336422C2 (en) * | 1993-10-20 | 1996-10-24 | Mannesmann Ag | Crank drive for a cold pilger rolling mill |
US5628676A (en) * | 1995-03-02 | 1997-05-13 | Exclusive Design Company | Counter-balance for disk texturizing apparatus |
US5664985A (en) * | 1995-03-02 | 1997-09-09 | Exclusive Design Company, Inc. | Method and apparatus for texturizing disks |
JP2820059B2 (en) * | 1995-03-24 | 1998-11-05 | トヨタ自動車株式会社 | Polishing equipment |
WO1998005473A1 (en) * | 1996-08-01 | 1998-02-12 | Radtec, Inc. | Microfinishing machine |
DE20006229U1 (en) | 2000-04-06 | 2000-09-21 | Ernst Thielenhaus GmbH & Co. KG, 42285 Wuppertal | Device for machining workpieces |
DE10147046C2 (en) * | 2001-09-25 | 2003-10-02 | Sms Meer Gmbh | Drive system for a rolling mill |
-
2005
- 2005-07-07 DE DE502005003334T patent/DE502005003334D1/en active Active
- 2005-07-07 EP EP05014721A patent/EP1741514B1/en not_active Ceased
-
2006
- 2006-05-18 CN CN2006800243793A patent/CN101228003B/en not_active Expired - Fee Related
- 2006-05-18 WO PCT/EP2006/004714 patent/WO2007019897A1/en active Application Filing
-
2007
- 2007-12-26 US US11/964,118 patent/US7771252B2/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010060471A1 (en) * | 2010-10-07 | 2012-04-12 | Thielenhaus Technologies Gmbh | Machine for finishing workpiece, preferably long workpiece, comprises machine frame, finishing unit for workpieces finishing and two parallel-aligned workpiece holders |
DE102010060471B4 (en) * | 2010-10-07 | 2016-01-14 | Thielenhaus Technologies Gmbh | Machine for finish machining of long, wave-shaped workpieces |
EP2750829B1 (en) | 2011-08-31 | 2016-04-20 | Nagel Maschinen- und Werkzeugfabrik GmbH | Finishing machine for finish machining of curved workpiece surfaces on workpieces |
Also Published As
Publication number | Publication date |
---|---|
US7771252B2 (en) | 2010-08-10 |
WO2007019897A1 (en) | 2007-02-22 |
US20080102733A1 (en) | 2008-05-01 |
EP1741514A1 (en) | 2007-01-10 |
DE502005003334D1 (en) | 2008-04-30 |
CN101228003A (en) | 2008-07-23 |
CN101228003B (en) | 2011-04-27 |
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