EP1577059B1 - Device and method for clamping and positioning workpieces of divergent length between centres - Google Patents
Device and method for clamping and positioning workpieces of divergent length between centres Download PDFInfo
- Publication number
- EP1577059B1 EP1577059B1 EP05001961.1A EP05001961A EP1577059B1 EP 1577059 B1 EP1577059 B1 EP 1577059B1 EP 05001961 A EP05001961 A EP 05001961A EP 1577059 B1 EP1577059 B1 EP 1577059B1
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- European Patent Office
- Prior art keywords
- slide
- workpiece
- clamping
- tip
- nut
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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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
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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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
- Y10T29/5104—Type of machine
- Y10T29/5109—Lathe
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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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/10—Process of turning
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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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/25—Lathe
- Y10T82/2552—Headstock
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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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/25—Lathe
- Y10T82/2564—Tailstock
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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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/25—Lathe
- Y10T82/2593—Work rest
Definitions
- the present invention relates to an apparatus and a method for clamping and positioning workpieces of different lengths.
- Such a device is for example from the Swiss patent CH 692 450 known.
- the apparatus described in this patent is a grinding machine in which elongated workpieces are received by a workpiece holder having one end and another end of these workpieces being tensioned with a counter-tip relative to the workpiece holder.
- the workpiece holding device and the counter tip are each mounted on numerically controlled carriage.
- the workpiece is first received by the workpiece holding device and then the workpiece holding device moves together with the workpiece and the counter-tip relative to each other so that the counter-tip penetrates into a corresponding receptacle, in particular in a center on the end face of the workpiece to be machined.
- this receptacle is conical and receives the opposite tip for clamping purposes.
- the further problem is that depending on the actual workpiece length, the two carriages with workpiece holding device and counter-tip must be positioned to each other in a suitable manner to securely clamp the workpiece with sufficient bias, but without damaging this.
- WO 2004/007145 A1 discloses a method and apparatus for grinding the outer periphery of a rotating roll held at its ends. This is supported by a cushion body in a circumferential region opposite a grinding wheel. The roller is clamped between a tip of a workpiece headstock and a tip of a tailstock, wherein the workpiece headstock and the tailstock are adjustable in the axial direction against each other.
- the device according to the invention it is possible to first contact the workpiece to be clamped with the clamping tip and / or the counter-tip and then to displace the first or / and the second slide in such a way that a sufficient preload can be generated via the tip and the counter-tip.
- a sufficient preload can be generated via the tip and the counter-tip.
- the workpiece to be clamped can be positioned with a positioning slide holding this between the clamping tip and the counter-tip.
- the positioning carriage is guided linearly on a linear guide.
- the positioning slide has a further biasing device and that the positioning slide is displaceable on contact of the workpiece with the clamping tip or the counter-tip under spring bias relative to the engaging on the workpiece clamping tip or counter-tip. Due to the displacement of the positioning carriage under spring pretension, special advantages can be achieved with regard to an exact positioning of the workpiece to be clamped on the device, as will be explained in more detail below.
- a cost-effective, low-maintenance and precisely positionable drive device is achieved by the use of a threaded nut-nut arrangement.
- the first carriage is associated with a separate drive means, wherein the first carriage is coupled to the displaceable on the threaded spindle nut.
- the second carriage is associated with a separate drive means, wherein the second carriage is coupled to the displaceable on the threaded spindle nut.
- the positioning carriage is assigned a separate drive means, wherein the positioning slide is coupled to the displaceable on the threaded spindle nut. According to the invention, however, individual carriages can also be displaced manually relative to the base, for example via a hand lever.
- a coupling arrangement is provided between the nut and the respective slide, which allows a relative movement between the nut and the respective slide to build up a spring bias.
- This variant of the invention has the advantage that the gripping tip or counter-tip and the holding arrangement on the positioning carriage are each fixedly connected to the carriages associated therewith and guided on the linear guide. As a result, the tips or the positioning device are positioned exactly to the base. The bias is achieved via the clutch assembly and a relative movement between the nut and the respective carriage within the clutch assembly.
- this roller-ramp pairing with a arranged between two opposing ramp surfaces, rolling on this role, wherein the roller is arranged on the one component of mother and this associated carriage and the ramp surfaces on the other component of mother and this associated carriage is arranged. It can be provided in a development of the invention that the roller or the ramp surfaces are displaced under spring bias relative to the mother or the respective carriage.
- roller is arranged on the nut and in that a spring-tensioned slide formed with the ramp surfaces is displaceably guided on the respective slide, wherein in a relative bearing of the nut and respective slide of the slider is displaced substantially in the direction orthogonal to the direction of Relatiwerlagerung against the spring bias.
- the coupling device is associated with at least one limit switch, which is activated when a predetermined distance reaches a relative displacement between the mother and the respective carriage becomes.
- two limit switches are provided which allow a detection of a Relatiwerlagerung between the mother and the respective carriage in both displacement directions.
- first and second positioning carriages it is advantageous for the exact positioning of first and second positioning carriages if at least one of the carriages, preferably each carriage, is assigned a position transmitter for determining the current position of the carriage relative to the base.
- each carriage is assigned at least one safety limit switch, wherein the drive device stops upon reaching the predetermined by the limit switch end position. As a result, it can be detected when one of the carriages approaches an end position insurmountable by the design of the device according to the invention, at which point a further displacement must be avoided.
- variable characterizing the preload detects the deflection of the slider and can be deduced from the preload taking into account the spring stiffness.
- step A) is carried out with a positioning slide which holds the workpiece during clamping. This allows positioning and clamping of the workpiece under full numerical control without manual intervention.
- step B) the first slide is rigidly coupled or couplable to the mother of its drive means that the first slide is further displaced after contacting the workpiece by a predetermined path on the positioning, wherein the positioning carriage is biased relative to the nut of its drive means, then the first carriage is stopped upon reaching a predetermined limit bias or a predetermined limit deflection of the positioning carriage, and the first carriage is moved back to reduce the bias and deflection of the positioning carriage.
- the one side of the workpiece is positioned in a predetermined position, in particular if this has a standardized center for receiving the clamping point.
- the clamping point is located at a predetermined position and does not yield resiliently.
- the biasing force required for clamping is achieved in the sequence rather by the second carriage and its movement.
- the accuracy of the method according to the invention can be increased by moving the first carriage back until the preload and the displacement of the positioning carriage are close to zero or even zero.
- step E) first of all the reaching of a predetermined limit prestress or a predetermined limit deflection is detected and that upon reaching the predetermined limit prestress or limit excursion the nut of the drive device associated with the second carriage is displaced by a predetermined tightening travel.
- a device according to the invention is shown in a spatial representation and generally designated 10. This is coupled to a processing unit 12, which will not be described in detail below.
- the inventive device 10 comprises a base 14 with Linear guides 16 and 18.
- a first carriage 20 is linearly guided and corresponding to the double arrow X1 Fig. 1 displaced by a separate drive means.
- a second carriage 22 is linearly guided on the linear guide 18 and corresponding to the double arrow X2 Fig. 1 displaced by a separate drive means.
- the first carriage 20 has a receiving device 24, in which a clamping tip 26 is inserted.
- the clamping tip 26 is fixedly coupled to the receiving device 24.
- the receiving device 24 is in turn firmly connected to the first carriage 20.
- the second carriage 22 also has a tip, namely the counter-tip in FIG. 28.
- a positioning carriage 30 is linearly displaceable on the linear guides 16 via a drive device. How out FIGS. 1 and 4 As can be seen, the positioning carriage 30 has a gripper 32, which consists of a magazine 34 (FIG. Fig. 1 ) remove individual workpieces to be processed, such as milling cutters, and these, as in FIGS. 1 to 4 shown on the example of a workpiece to be machined 36, between the clamping tip 26 and the opposite tip 28 can position. For this purpose, the gripper 32 can be moved over the positioning slide 30 in different directions and rotated. The directions are in Fig. 1 indicated by the double arrows DH, XH, YH, ZH.
- the device 10 is to be discussed in particular with regard to the clamping of the workpiece 36 between the clamping tip 26 and the counter-tip 28.
- the positioning carriage 30 is linearly guided on the linear guide 16.
- the positioning carriage 30 is coupled to a nut 40 which cooperates with a threaded spindle 42.
- the threaded spindle 42 is rotatably driven by a drive, not shown, so that the nut 40 is displaceable on the threaded spindle 42 in the manner of a spindle-nut drive.
- the coupling between nut 40 and positioning slide 30 is realized by a coupling device 44.
- the coupling device 44 has a roller 46 which is rotatably mounted on the nut 40 and a ramp arrangement 48 which is formed on a slide 50 which is displaceable in the positioning carriage 30.
- the slider 50 is biasing springs 52 and 54 in its in Fig. 6 biased position shown.
- the biasing springs 52 and 54 are supported on a support plate 58 from.
- the ramp assembly 48 has two V-shaped inclined surfaces that receive the roller 46.
- the roller 46 rolls on one of the inclined surfaces of the ramp assembly 48 and directs the Slider 50 against the bias of the biasing springs 52 and 54 from.
- the displacement of the slider 50 can be detected by means of a limit switch, not shown.
- the second carriage 22 is, as in FIGS. 7 and 8th shown on the base 14 via the linear guides 18 linearly guided and displaceable via a spindle-nut arrangement 62 with the spindle 64 and the nut 66 along the linear guides 18. Also, the nut 66 is coupled to a rotatably mounted on this roller 69.
- the second carriage 22 has a guided in this slide 68, on which a ramp assembly 70 is formed with two V-shaped mutually inclined surfaces.
- the slider 68 is biased by springs 72 and 74 in the in Fig. 8 shown biased position, wherein the biasing springs 72 and 74 are supported on the support plate 76.
- the clutch assembly 78 for coupling the nut 66 and the second carriage 22 acts in the same manner as described above with respect to the positioning carriage 30. Again, the second carriage 22 can be displaced relative to the driving nut 66, wherein a bias voltage builds up in response to the relative bearing by the biasing springs 72 and 74. The displacement of the slider 68 can be detected by means of a limit switch, not shown.
- the device 10 For clamping the workpiece 36 between the clamping tip 26 and the counter-tip 28, the device 10 according to the invention is used as follows. First, the workpiece 36 is removed from the magazine 34 via the gripper 32 by means of the positioning slide 30 and positioned between the two tips, namely the clamping tip 26 and the counter-tip 28, such as in Figures 2 . 3 and 4 shown. In this case, the gripping tip 26 and the counter-tip 28 are at a distance from the workpiece 36 held by the positioning carriages 30. The workpiece 36, however, is aligned with its center axis with the gripping axis A formed by the gripping tip 26 and the counter-tip 28.
- the first carriage 20 is then moved back so far, until just no deflection of the slider 50 is present.
- the required displacement of the first carriage 20 is inherently determined by the design of the ramp assembly 48 and the roller 46. Now, the first carriage 20 is in a predetermined position for receiving the workpiece 36. The above procedure can be carried out even when rigidly held first carriage 20 and complementary displacement of the positioning carriage 30.
- the second carriage 22 is displaced to the opposite end of the workpiece 36 to the receptacle 80, until finally the counter-tip 28 engages in a center provided in the workpiece.
- the second carriage 22 is further displaced in the direction of the workpiece 36, wherein the slider 68 moves against the bias of the biasing springs 72 and 74.
- the slider 68 reaches an intermediate position predetermined by the limit switch, the second carriage 22 is in a defined position with respect to the first carriage 20 for clamping the workpiece 36, this predetermined position being determined by the length of the workpiece 36.
- the second carriage 22 driving the drive from this predetermined position by a certain distance, for example, by 20 mm, further displaced relative to the second carriage 22, which by the springs 72 and 74 exerted bias further increased.
- a certain bias value can be achieved, which corresponds to the desired clamping force for machining the workpiece 36.
- the positioning carriage 30 releases the workpiece 36 for machining and is moved to a parking position. Now the workpiece 36 can be processed. In this case - if necessary - both carriages 20 and 22 are displaced synchronously with each other. If the machining of the workpiece 36 is completed, then the positioning carriage 30 is approached again to the workpiece 36 and picks up the workpiece 30 with its gripper 32. Then, the second carriage 22 is moved away from the workpiece 36 while reducing the bias. As soon as the counter-tip 28 releases the workpiece 36 and moves away from it, the first carriage 20 can also be removed from the workpiece 36. As a result, the Positioning carriage 30, the finished machined workpiece 36 settle in the magazine 34.
- the device according to the invention With the device according to the invention and the above-described inventive method for clamping workpieces between two tips, it is possible to clamp workpieces of any length fully automatically, without taking the risk that during clamping the workpiece due to its unknown length, for example, by force-intensive clamping between the tips is damaged. Rather, the device according to the invention adapts automatically to an arbitrary length of the workpiece and always achieves a predetermined desired clamping force independently of the length of the workpiece for each workpiece.
- the essential advantage of the device according to the invention and of the method carried out with it is that workpieces of any length can be clamped reliably and safely.
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Description
Die vorliegende Erfindung betrifft eine Vorrichtung und ein Verfahren zum Einspannen und Positionieren von Werkstücken unterschiedlicher Länge.The present invention relates to an apparatus and a method for clamping and positioning workpieces of different lengths.
Ein Vorrichtung gemäß dem Oberbegriff des Anspruchs 1 ist aus
Eine derartige Vorrichtung ist beispielsweise aus dem Schweizer Patent
Dokument
Es ist daher Aufgabe der vorliegenden Erfindung, eine Vorrichtung und ein Verfahren zum Einspannen und Positionieren von Werkstücken bereitzustellen, so dass ein sicheres Einspannen unter zuverlässiger Vermeidung einer Beschädigung des Werkstücks erzielt werden kann.It is therefore an object of the present invention to provide an apparatus and method for clamping and positioning workpieces so that secure clamping can be achieved while reliably avoiding damage to the workpiece.
Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 und ein Verfahren mit den Merkmalen des Anspruchs 13 gelöst.This object is achieved by a device having the features of
Mit der erfindungsgemäßen Vorrichtung ist es möglich, das einzuspannende Werkstück mit der Einspannspitze oder/und der Gegenspitze zunächst zu kontaktieren und sodann den ersten oder/und den zweiten Schlitten derart zu verlagern, dass über die Spitze und die Gegenspitze eine hinreichend Vorspannung erzeugt werden kann. Dadurch kann einerseits gewährleistet werden, dass jedes Werkstück unabhängig von seiner Länge zuverlässig zwischen Einspannspitze und Gegenspitze mit hinreichend hoher Einspannkraft eingespannt wird. Ferner wird eine Beschädigung des Werkstücks beim Einspannen ausgeschlossen, da bei unbeabsichtigtem Kontakt von Werkstück und Einspannspitze bzw. Gegenspitze lediglich die Vorspannung erhöht wird und dadurch ein abrupter Anstieg der auf das Werkstück einwirkenden Kraft verhindert werden kann.With the device according to the invention, it is possible to first contact the workpiece to be clamped with the clamping tip and / or the counter-tip and then to displace the first or / and the second slide in such a way that a sufficient preload can be generated via the tip and the counter-tip. As a result, on the one hand, it can be ensured that each workpiece, regardless of its length, is reliably clamped between the clamping tip and the counter-tip with a sufficiently high clamping force. Further, damage to the workpiece during clamping is excluded, since inadvertent contact of workpiece and clamping tip or counter-tip only the bias voltage is increased and thereby an abrupt increase in the force acting on the workpiece can be prevented.
Um die Einspannung zu erleichtern sieht eine Weiterbildung der Erfindung vor, dass das einzuspannende Werkstück mit einem dieses haltenden Positionierschlitten zwischen der Einspannspitze und der Gegenspitze positionierbar ist. In diesem Zusammenhang kann ferner vorgesehen sein, dass der Positionierschlitten auf einer Linearführung linear geführt ist. Eine vorteilhafte Ausführungsform der Erfindung sieht vor, dass der Positionierschlitten eine weitere Vorspanneinrichtung aufweist und dass der Positionierschlitten bei Kontakt des Werkstücks mit der Einspannspitze oder der Gegenspitze unter Federvorspannung relativ zu der an dem Werkstück angreifenden Einspannspitze oder Gegenspitze verlagerbar ist. Durch die Verlagerung des Positionierschlittens unter Federvorspannung können - wie im Folgenden noch ausführlich dargelegt wird - besondere Vorteile hinsichtlich einer exakten Positionierung des einzuspannenden Werkstücks auf der Vorrichtung erzielt werden.In order to facilitate the clamping, a development of the invention provides that the workpiece to be clamped can be positioned with a positioning slide holding this between the clamping tip and the counter-tip. In this context, it may further be provided that the positioning carriage is guided linearly on a linear guide. An advantageous embodiment of the invention provides that the positioning slide has a further biasing device and that the positioning slide is displaceable on contact of the workpiece with the clamping tip or the counter-tip under spring bias relative to the engaging on the workpiece clamping tip or counter-tip. Due to the displacement of the positioning carriage under spring pretension, special advantages can be achieved with regard to an exact positioning of the workpiece to be clamped on the device, as will be explained in more detail below.
Eine kostengünstige, wartungsarme und exakt positionierbare Antriebseinrichtung wird durch den Einsatz einer Gewindespindel-Mutter-Anordnung erreicht.A cost-effective, low-maintenance and precisely positionable drive device is achieved by the use of a threaded nut-nut arrangement.
In einer einfachen Ausführungsform der Erfindung ist vorgesehen, dass dem ersten Schlitten eine separate Antriebseinrichtung zugeordnet ist, wobei der erste Schlitten mit der auf der Gewindespindel verlagerbaren Mutter gekoppelt ist. Zusätzlich oder alternativ hierzu kann auch vorgesehen sein, dass dem zweiten Schlitten eine separate Antriebseinrichtung zugeordnet ist, wobei der zweite Schlitten mit der auf der Gewindespindel verlagerbaren Mutter gekoppelt ist. Als weitere Ergänzung ist es ferner möglich, dass dem Positionierschlitten eine separate Antriebseinrichtung zugeordnet ist, wobei der Positionierschlitten mit der auf der Gewindespindel verlagerbaren Mutter gekoppelt ist. Erfindungsgemäß können aber auch einzelne Schlitten manuell relativ zu der Basis verlagert werden, beispielsweise über einen Handhebel.In a simple embodiment of the invention it is provided that the first carriage is associated with a separate drive means, wherein the first carriage is coupled to the displaceable on the threaded spindle nut. Additionally or alternatively, it can also be provided that the second carriage is associated with a separate drive means, wherein the second carriage is coupled to the displaceable on the threaded spindle nut. As a further supplement, it is also possible that the positioning carriage is assigned a separate drive means, wherein the positioning slide is coupled to the displaceable on the threaded spindle nut. According to the invention, however, individual carriages can also be displaced manually relative to the base, for example via a hand lever.
Bei dem Vorrichtung der Erfindung ist zwischen der Mutter und dem jeweiligen Schlitten eine Kupplungsanordnung vorgesehen, die eine Relativbewegung zwischen Mutter und jeweiligem Schlitten unter Aufbau einer Federvorspannung zulässt. Diese Ausführungsvariante der Erfindung hat den Vorteil, dass die Einspannspitze bzw. Gegenspitze sowie die Halteanordnung auf dem Positionierschlitten jeweils fest mit den diesen zugeordneten Schlitten verbunden und auf der Linearführung geführt sind. Dadurch sind die Spitzen bzw. die Positioniervorrichtung exakt zur Basis positioniert. Die Vorspannung wird über die Kupplungsanordnung und eine Relativbewegung zwischen der Mutter und dem jeweiligen Schlitten innerhalb der Kupplungsanordnung erreicht. Dies bietet hinsichtlich der Positionierung des Werkstücks signifikante Vorteile gegenüber bekannten Systemen, bei denen eine Kupplungsvorrichtung zwischen der Spitze und dem auf der Linearführung geführten Schlitten angeordnet ist. Bei derartigen bekannten Systemen kann es wegen der federvorgespannten Auslenkung und dem dazu erforderlichen Spiel zu Ungenauigkeiten bei der Positionierung der Spitze kommen.In the device of the invention, a coupling arrangement is provided between the nut and the respective slide, which allows a relative movement between the nut and the respective slide to build up a spring bias. This variant of the invention has the advantage that the gripping tip or counter-tip and the holding arrangement on the positioning carriage are each fixedly connected to the carriages associated therewith and guided on the linear guide. As a result, the tips or the positioning device are positioned exactly to the base. The bias is achieved via the clutch assembly and a relative movement between the nut and the respective carriage within the clutch assembly. This offers significant advantages in terms of the positioning of the workpiece over known systems in which a coupling device between the tip and the guided on the linear guide carriage is arranged. In such known systems, it may come to inaccuracies in the positioning of the tip because of the spring-biased deflection and the required clearance.
Hinsichtlich der Kupplungsanordnung ist erfindungsgemäß vorgesehen, dass diese eine Rollen-Rampen-Paarung mit einer zwischen zwei einander gegenüberliegenden Rampenflächen angeordneten, auf diesen abrollenden Rolle umfasst, wobei die Rolle an der einen Komponente von Mutter und dieser zugeordnetem Schlitten angeordnet ist und die Rampenflächen an der anderen Komponente von Mutter und dieser zugeordnetem Schlitten angeordnet ist. Dabei kann bei einer Weiterbildung der Erfindung vorgesehen sein, dass die Rolle oder die Rampenflächen unter Federvorspannung relativ zu der Mutter oder dem jeweiligen Schlitten verlagerbar sind.With regard to the coupling arrangement is provided according to the invention that this roller-ramp pairing with a arranged between two opposing ramp surfaces, rolling on this role, wherein the roller is arranged on the one component of mother and this associated carriage and the ramp surfaces on the other component of mother and this associated carriage is arranged. It can be provided in a development of the invention that the roller or the ramp surfaces are displaced under spring bias relative to the mother or the respective carriage.
Eine konstruktiv einfache und in der Funktion zuverlässige Realisierung dieser Lösung kann beispielsweise dadurch erreicht werden, dass die Rolle an der Mutter angeordnet ist und dass an dem jeweiligen Schlitten ein mit den Rampenflächen ausgebildeter federvorgespannter Schieber verlagerbar geführt ist, wobei sich bei einer Relatiwerlagerung von Mutter und jeweiligem Schlitten der Schieber im Wesentlichen in Richtung orthogonal zur Richtung der Relatiwerlagerung gegen die Federvorspannung verlagert.A structurally simple and functionally reliable realization of this solution can be achieved, for example, in that the roller is arranged on the nut and in that a spring-tensioned slide formed with the ramp surfaces is displaceably guided on the respective slide, wherein in a relative bearing of the nut and respective slide of the slider is displaced substantially in the direction orthogonal to the direction of Relatiwerlagerung against the spring bias.
Um eine Erkennung einer bestimmten Federvorspannung oder einer bestimmten Relativauslenkung zwischen Schlitten und Mutter zu ermöglichen, sieht eine Weiterbildung der Erfindung vor, dass der Kupplungsvorrichtung wenigstens ein Endschalter zugeordnet ist, der aktiviert wird, wenn eine vorbestimmte Strecke bei einer Relativverlagerung zwischen Mutter und jeweiligem Schlitten erreicht wird. Vorteilhafterweise sind bei einer Ausführungsform zwei Endschalter vorgesehen, die eine Erfassung einer Relatiwerlagerung zwischen Mutter und jeweiligem Schlitten in beide Verlagerungsrichtungen ermöglichen.In order to enable detection of a specific spring preload or a specific relative deflection between carriage and nut, a development of the invention provides that the coupling device is associated with at least one limit switch, which is activated when a predetermined distance reaches a relative displacement between the mother and the respective carriage becomes. Advantageously, in one embodiment, two limit switches are provided which allow a detection of a Relatiwerlagerung between the mother and the respective carriage in both displacement directions.
Darüber hinaus ist es zur genauen Positionierung von ersten und zweiten Positionierschlitten von Vorteil, wenn wenigstens einen der Schlitten, vorzugsweise jedem Schlitten, ein Positionsgeber zur Ermittlung der aktuellen Position des Schlittens relativ zu der Basis zugeordnet ist.Moreover, it is advantageous for the exact positioning of first and second positioning carriages if at least one of the carriages, preferably each carriage, is assigned a position transmitter for determining the current position of the carriage relative to the base.
Zur Erhöhung der Betriebssicherheit der erfindungsgemäßen Vorrichtung sieht eine Weiterbildung der Erfindung vor, dass jedem Schlitten wenigstens ein Sicherheitsendschalter zugeordnet ist, wobei die Antriebseinrichtung bei Erreichen der durch den Endschalter vorgegebenen Endposition stoppt. Dadurch kann erfasst werden, wenn sich einer der Schlitten einer durch die Konstruktion der erfindungsgemäßen Vorrichtung unüberwindbaren Endstellung nähert, an der eine weitere Verlagerung unterbleiben muss.To increase the reliability of the device according to the invention, a development of the invention provides that each carriage is assigned at least one safety limit switch, wherein the drive device stops upon reaching the predetermined by the limit switch end position. As a result, it can be detected when one of the carriages approaches an end position insurmountable by the design of the device according to the invention, at which point a further displacement must be avoided.
Die Erfindung betrifft ferner ein Verfahren zum Einspannen und Positionieren von Werkstücken unterschiedlicher Länge zwischen zwei Spitzen mit einer Vorrichtung nach einem der Ansprüche 1 bis 12, umfassend die Schritte:
- A) Positionieren des einzuspannenden Werkstücks in einem Bereich zwischen den Spitzen,
- B) Kontaktieren des Werkstücks mit der Einspannspitze an einer der Einspannspitze zugewandten Einspannstelle des Werkstücks,
- C) Verlagern des zweiten Schlittens zum Kontaktieren des Werkstücks mit der Gegenspitze an einer der Gegenspitze zugewandten Gegeneinspannstelle des Werkstücks,
- D) Antreiben des zweiten Schlittens in Richtung auf den ersten Schlitten zu nach Kontaktieren des Werkstücks mit der Gegenspitze an der Gegeneinspannstelle,
- E) Erfassen einer sich in Schritt D) aufbauenden Vorspannung oder einer diese Vorspannung charakterisierenden Größe und
- F) Deaktivieren der dem zweiten Schlitten zugeordneten Antriebseinrichtung bei Erreichen einer vorbestimmten Einspann-Vorspannung.
- A) positioning the workpiece to be clamped in a region between the tips,
- B) contacting the workpiece with the clamping tip at a clamping point of the workpiece facing the clamping point,
- C) displacing the second carriage for contacting the workpiece with the counter-tip at a counter-clamping point of the workpiece facing the counter-tip,
- D) driving the second carriage towards the first carriage after contacting the workpiece with the counter-tip at the counter-clamping location,
- E) detecting a build-up in step D) bias or a bias voltage characterizing size and
- F) deactivating the drive means associated with the second carriage upon reaching a predetermined clamping bias voltage.
Bezüglich Merkmal E) ist anzumerken, dass als die Vorspannung charakterisierende Größe beispielsweise die Auslenkung des Schiebers erfasst und unter Berücksichtigung der Federhärte auf die Vorspannung rückgeschlossen werden kann.With regard to feature E), it should be noted that the variable characterizing the preload, for example, detects the deflection of the slider and can be deduced from the preload taking into account the spring stiffness.
Zur Erleichterung der Ausführung des erfindungsgemäßen Verfahrens, sieht eine Weiterbildung der Erfindung vor, dass Schritt A) mit einem Positionierschlitten ausgeführt wird, der das Werkstück während des Einspannens festhält. Dadurch ist eine Positionierung und Einspannung des Werkstücks unter vollnumerischer Steuerung ohne manuelles Eingreifen möglich.To facilitate the execution of the method according to the invention, a development of the invention provides that step A) is carried out with a positioning slide which holds the workpiece during clamping. This allows positioning and clamping of the workpiece under full numerical control without manual intervention.
Eine vorteilhafte Weiterbildung des erfindungsgemäßen Verfahrens sieht vor, dass bei Schritt B) der erste Schlitten starr mit der Mutter seiner Antriebseinrichtung gekoppelt oder koppelbar ist, dass der erste Schlitten nach dem Kontaktieren des Werkstücks weiter um einen vorbestimmten Weg auf den Positionierschlitten zu verlagert wird, wobei der Positionierschlitten relativ zu der Mutter seiner Antriebseinrichtung unter Federvorspannung ausgelenkt wird, sodann der erste Schlitten bei Erreichen einer vorbestimmten Grenzvorspannung oder einer vorbestimmten Grenzauslenkung des Positionierschlittens gestoppt wird und dass der erste Schlitten zur Reduzierung der Vorspannung und der Auslenkung des Positionierschlittens zurückbewegt wird. Durch diese Weiterbildung des erfindungsgemäßen Verfahrens kann erreicht werden, dass die eine Seite des Werkstücks in einer vorbestimmten Position positioniert wird, insbesondere dann, wenn diese ein genormtes Zentrum zur Aufnahme der Einspannspitze aufweist. Die Einspannspitze befindet sich gemäß dieser Ausführungsvariante des erfindungsgemäßen Verfahrens nämlich an einer vorbestimmten Position und gibt nicht federnd nach. Die zur Einspannung erforderliche Vorspannkraft wird in der Folge vielmehr durch den zweiten Schlitten und dessen Bewegung erreicht.An advantageous development of the method according to the invention provides that in step B) the first slide is rigidly coupled or couplable to the mother of its drive means that the first slide is further displaced after contacting the workpiece by a predetermined path on the positioning, wherein the positioning carriage is biased relative to the nut of its drive means, then the first carriage is stopped upon reaching a predetermined limit bias or a predetermined limit deflection of the positioning carriage, and the first carriage is moved back to reduce the bias and deflection of the positioning carriage. By means of this development of the method according to the invention, it can be achieved that the one side of the workpiece is positioned in a predetermined position, in particular if this has a standardized center for receiving the clamping point. Namely, according to this embodiment of the method according to the invention, the clamping point is located at a predetermined position and does not yield resiliently. The biasing force required for clamping is achieved in the sequence rather by the second carriage and its movement.
Die Genauigkeit des erfindungsgemäßen Verfahrens lässt sich dadurch erhöhen, dass der erste Schlitten derart weit zurückbewegt wird, bis die Vorspannung und die Auslenkung des Positionierschlittens nahe null oder gerade null ist.The accuracy of the method according to the invention can be increased by moving the first carriage back until the preload and the displacement of the positioning carriage are close to zero or even zero.
Ferner kann erfindungsgemäß vorgesehen sein, dass in Schritt E) zunächst das Erreichen einer vorbestimmten Grenzvorspannung oder einer vorbestimmten Grenzauslenkung erfasst wird und dass bei Erreichen der vorbestimmten Grenzvorspannung oder Grenzauslenkung die Mutter der dem zweiten Schlitten zugeordneten Antriebseinrichtung um einen vorbestimmten Zuspannweg verlagert wird. Dadurch kann eine definierte Vorspannung bei Werkstücken beliebiger Länge erreicht werden. Die erfindungsgemäße Vorrichtung passt sich so quasi selbsttätig an die Werkstücklänge an.Furthermore, according to the invention, it can be provided that in step E) first of all the reaching of a predetermined limit prestress or a predetermined limit deflection is detected and that upon reaching the predetermined limit prestress or limit excursion the nut of the drive device associated with the second carriage is displaced by a predetermined tightening travel. As a result, a defined preload can be achieved for workpieces of any length. The device according to the invention thus virtually adapts itself automatically to the workpiece length.
Die Erfindung wird im Folgenden beispielhaft anhand der beiliegenden Figuren erläutert. Es stellen dar:
- Fig. 1
- eine perspektivische Übersichtsdarstellung der erfindungsgemäßen Vorrichtung mit einem Bearbeitungskopf;
- Fig. 2
- eine Vorderansicht der Vorrichtung aus
Fig. 1 , jedoch ohne Bearbeitungskopf; - Fig. 3
- eine Ansicht entsprechend
Figur 1 , jedoch in Schnittdarstellung; - Fig. 4
- eine Draufsicht auf die Anordnung entsprechend
Figur 2 ; - Fig. 5
- eine Einzelansicht des Positionierschlittens;
- Fig. 6
- eine Schnittdarstellung entlang Schnittlinie VI-VI aus
Fig. 5 ; - Fig. 7
- eine Schnittdarstellung entsprechend Schnittlinie VII-VII aus
Fig. 2 ; - Fig. 8
- eine Schnittdarstellung entsprechend Schnittlinie VIII-VIII aus
Fig. 7 .
- Fig. 1
- an overview of perspective view of the device according to the invention with a machining head;
- Fig. 2
- a front view of the device
Fig. 1 , but without processing head; - Fig. 3
- a view accordingly
FIG. 1 , but in section; - Fig. 4
- a plan view of the arrangement accordingly
FIG. 2 ; - Fig. 5
- a single view of the positioning carriage;
- Fig. 6
- a sectional view taken along section line VI-VI
Fig. 5 ; - Fig. 7
- a sectional view corresponding to section line VII-VII
Fig. 2 ; - Fig. 8
- a sectional view corresponding to section line VIII-VIII
Fig. 7 ,
In
An der Basis 14 ist auf den Linearführungen 16 ein Positionierschlitten 30 über eine Antriebseinrichtung linear verlagerbar. Wie aus
Im Folgenden soll die erfindungsgemäße Vorrichtung 10 insbesondere im Hinblick auf die Einspannung des Werkstücks 36 zwischen der Einspannspitze 26 und der Gegenspitze 28 erörtert werden. Wie
Bei einer Relativverlagerung von Mutter 40 und Positionierschlitten 30 rollt die Rolle 46 auf einer der geneigten Flächen der Rampenanordnung 48 ab und lenkt den Schieber 50 gegen die Vorspannung der Vorspannfedern 52 und 54 aus. Die Verlagerung des Schiebers 50 kann dabei mittels eines nicht gezeigten Endschalters erfasst werden.In a relative displacement of
Auch der zweite Schlitten 22 ist, wie in
Zum Einspannen des Werkstücks 36 zwischen der Einspannspitze 26 und der Gegenspitze 28 wird die erfindungsgemäße Vorrichtung 10 wie folgt eingesetzt. Zunächst wird über den Greifer 32 mit Hilfe des Positionierschlitten 30 das Werkstück 36 aus dem Magazin 34 entnommen und zwischen den beiden Spitzen, nämlich der Einspannspitze 26 und der Gegenspitze 28, positioniert, wie beispielsweise in
In der in den
In der Folge wird der zweite Schlitten 22 auf das zu der Aufnahme 80 entgegengesetzte Ende des Werkstücks 36 zu verlagert, bis schließlich die Gegenspitze 28 in ein in dem Werkstück vorgesehenes Zentrum eingreift. Sobald die Gegenspitze 28 das Werkstück 36 kontaktiert, wird der zweite Schlitten 22 weiter in Richtung auf das Werkstück 36 zu verlagert, wobei sich der Schieber 68 gegen die Vorspannung der Vorspannfedern 72 und 74 verlagert. Erreicht der Schieber 68 eine durch den Endschalter vorgegebenen Zwischenposition, so befindet sich der zweite Schlitten 22 in einer definierten Stellung bezüglich des ersten Schlittens 20 zur Einspannung des Werkstücks 36, wobei diese vorbestimmte Stellung jeweils durch die Länge des Werkstücks 36 bestimmt ist.As a result, the
Um nun eine definierte Einspannkraft erreichen zu können, wird der den zweiten Schlitten 22 antreibende Antrieb ausgehend von dieser vorbestimmten Stellung um eine gewisse Strecke, beispielsweise um 20 mm, weiter relativ zu dem zweiten Schlitten 22 verlagert, wobei sich die durch die Federn 72 und 74 ausgeübte Vorspannung weiter erhöht. Dadurch kann ein bestimmter Vorspannungwert erreicht werden, der der gewünschten Einspannkraft zur Bearbeitung des Werkstücks 36 entspricht.In order to be able to achieve a defined clamping force, the
In der Folge gibt der Positionierschlitten 30 das Werkstück 36 für eine Bearbeitung frei und wird in eine Parkstellung gefahren. Nun kann das Werkstück 36 bearbeitet werden. Dabei können - falls erforderlich - beide Schlitten 20 und 22 synchron zueinander verlagert werden. Ist die Bearbeitung des Werkstücks 36 abgeschlossen, so wird der Positionierschlitten 30 wieder an das Werkstück 36 herangefahren und nimmt mit seinem Greifer 32 das Werkstück 30 auf. Sodann wird der zweite Schlitten 22 unter Abbau der Vorspannung von dem Werkstück 36 wegbewegt. Sobald die Gegenspitze 28 das Werkstück 36 freigibt und sich von diesem entfernt, kann auch der erste Schlitten 20 von dem Werkstück 36 entfernt werden. In der Folge kann der Positionierschlitten 30 das fertige bearbeitende Werkstück 36 im Magazin 34 absetzen.As a result, the
Mit der erfindungsgemäßen Vorrichtung und dem vorstehend geschilderten erfindungsgemäßen Verfahren zum Einspannen von Werkstücken zwischen zwei Spitzen ist es möglich, Werkstücke beliebiger Länge vollautomatisch einzuspannen, ohne das Risiko einzugehen, dass während des Einspannens das Werkstück aufgrund seiner unbekannten Länge beispielsweise durch zu kraftintensives Einspannen zwischen den Spitzen beschädigt wird. Die erfindungsgemäße Vorrichtung passt sich vielmehr selbsttätig an eine beliebige Länge des Werkstücks an und erreicht unabhängig von der Länge des Werkstücks stets für jedes Werkstück eine vorbestimmte gewünschte Einspannkraft.With the device according to the invention and the above-described inventive method for clamping workpieces between two tips, it is possible to clamp workpieces of any length fully automatically, without taking the risk that during clamping the workpiece due to its unknown length, for example, by force-intensive clamping between the tips is damaged. Rather, the device according to the invention adapts automatically to an arbitrary length of the workpiece and always achieves a predetermined desired clamping force independently of the length of the workpiece for each workpiece.
Obgleich vorstehend das bevorzugte Ausführungsbeispiel der Erfindung beschrieben wurde, gibt es eine Reihe von Abwandlungsmöglichkeiten, die im Folgenden nur kurz erläutert werden sollen. So ist es beispielsweise möglich, auch an dem ersten Schlitten 20 einen federvorgespannten Schieber vorzusehen, der über eine Rolle eine Relatiwerlagerung von Mutter und Schlitten zulässt. Bei einer derartigen Ausführungsform ist es allerdings erforderlich, die Federhärte zur Vorspannung des Schiebers in dem ersten Schlitten erheblich größer zu wählen, als die Federhärte des zur Vorspannung Schiebers in dem zweiten Schlitten. Dadurch kann nämlich verhindert werden, dass nach dem Einspannen bei Freigabe des Werkstücks durch den Positionierschlitten sich die Lage des Werkstücks aufgrund der von beiden Seiten wirkenden Federvorspannung aufgrund der quasi schwimmenden Lagerung noch verändert.Although the preferred embodiment of the invention has been described above, there are a number of modifications that will be explained only briefly in the following. Thus, for example, it is also possible to provide a spring-biased slide on the
Der wesentliche Vorteil der erfindungsgemäßen Vorrichtung und des mit dieser ausgeführten Verfahrens liegt darin, dass Werkstücke beliebiger Länge zuverlässig und sicher eingespannt werden können.The essential advantage of the device according to the invention and of the method carried out with it is that workpieces of any length can be clamped reliably and safely.
Claims (17)
- Apparatus (10) for clamping and positioning of workpieces (36) of different lengths between two tips (26, 28), comprising:- a base (14) having at least one linear guide (18),- a first slide (20) being linearly guided displaceable on the linear guide (18) and having a clamping tip (26),- a second slide (22) being linearly guided displaceable on the linear guide (18) and having a counter tip (28), and- a drive device being coupled with the first or/and the second slide (20, 22), wherein the first slide (20) and the second slide (22) are displaceable on the linear guide (18) relative to one another and relative to the base (14), such that workpieces (36) having different lengths are receivable between the clamping tip (26) and the counter tip (28),wherein the first or/and the second slide (20, 22) further comprise a preload device, characterized in that
the clamping tip (26) or/and the counter tip (28) are displaceable towards the workpiece (36) to be clamped under spring preload, upon contact with the workpiece (36) to be clamped,
wherein the drive device comprises a threaded screw-nut-arrangement (62), wherein a clutch arrangement (78) is provided between the nut (66) and the respective slide (20, 22), which allows relative movement between the nut (66) and the respective slide (20, 22) by building up the spring preload, and
wherein the clutch arrangement (78) comprises the roller-ramp-pair (69, 70) having a roller (69) being arranged between and rolling on two opposing ramp surfaces (70), wherein the roller (69) is arranged on the one component of the nut (66) and the corresponding slide (20, 22) and the ramp surfaces (70) are arranged on the other component of the nut (66) and the corresponding slide (20, 22). - Apparatus (10) according to claim 1,
characterized in that the workpiece (36) to be clamped is positionable between the clamping tip (26) and the counter tip (28) by means of a positioning slide (30) holding the workpiece. - Apparatus (10) according to claim 2,
characterized in that the positioning slide (30) is linearly guided on a linear guide (16). - Apparatus (10) according to claim 2 or 3,
characterized in that the positioning slide (30) comprises a further preload device and in that the positioning slide (30) is displaceable relative to the clamping tip (26) or the counter tip (28) engaging the workpiece (36) under spring preload, upon contact of the workpiece (36) with the clamping tip (26) or the counter tip (28). - Apparatus (10) according to one of the preceding claims,
characterized in that the first slide (20) is provided with a separate drive device, wherein the first slide (20) is coupled to the nut that is displaceable on the threaded screw. - Apparatus (10) according to one of the preceding claims,
characterized in that the second slide (22) is provided with a separate drive device, wherein the second slide (22) is coupled to the nut that is displaceable on the threaded screw. - Apparatus (10) according to one of claims 2 to 6,
characterized in that the positioning slide (30) is provided with a separate drive device, wherein the positioning slide (30) is coupled to the nut that is displaceable on the threaded screw. - Apparatus (10) according to one of the preceding claims,
characterized in that the roller (69) or the ramp surfaces (70) are displaceable relative to the nut (66) or the respective slide (20, 22) under spring preload. - Apparatus (10) according to one of the preceding claims,
characterized in that the roller is arranged on the nut and in that a spring preloaded slider (50, 68) configured with the ramp surfaces is displaceably guided on the respective slide, wherein, upon relative displacement of the nut and the respective slide, the slider (50, 68) displaces substantially in a direction orthogonal to the direction of the relative displacement against the spring preload. - Apparatus (10) according to one of the preceding claims,
characterized in that the clutch arrangement is provided with at least one end switch that is activated, when the predetermined distance is reached at the relative displacement between the nut and the respective slide. - Apparatus (10) according to one of the preceding claims,
characterized in that at least one of the slides, preferably each slide, is provided with a position encoder for determining the current position of the slide relative to the base. - Apparatus (10) according to one of the preceding claims,
characterized in that each slide is provided with at least one safety end switch, wherein the drive device stops upon reaching the end position predetermined by the end switch. - Method for clamping and positioning workpieces of different lengths between two tips by means of an apparatus (10) according to one of the preceding claims, comprising the steps:A) positioning the workpiece to be clamped in a region between the tips,B) contacting the workpiece with the clamping tip at a clamping position of the workpiece facing the clamping tip,C) displacing the second slide for contacting the workpiece with the counter tip at a counter clamping position of the workpiece facing the counter tip,D) driving the second slide in a direction towards the first slide after contacting the workpiece with the counter tip at the counter clamping position,E) determining a preload building up in step D) or a parameter characterizing this preload, andF) deactivating the drive device assigned to the second slide upon reaching a predetermined clamping preload.
- Method according to claim 13,
characterized in that step A) is carried out by means of a positioning slide that holds the workpiece during the clamping. - Method according to claim 14,
characterized in that in step B) the first slide is fixedly coupled to the nut of its drive device, and is further displaced by a predetermined distance towards the positioning slide after contacting the workpiece, wherein the positioning slide is displaced under spring preload relative to the nut of its drive device, thereafter the first slide is stopped upon reaching a predetermined threshold preload or a predetermined threshold displacement of the positioning slide, and in that the first slide is moved backwards for reducing the preload and the displacement of the positioning slide. - Method according to claim 15,
characterized in that the first slide is moved backwards thus far, until the preload and the displacement of the positioning slide are nearly zero or precisely zero. - Method according to one of claims 13 to 16,
characterized in that in step E) reaching a predetermined threshold preload or a predetermined threshold displacement is initially determined and in that the nut of the drive device assigned to the second slide is displaced by a predetermined clamping distance, upon reaching the predetermined threshold preload or threshold displacement.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004012823A DE102004012823A1 (en) | 2004-03-16 | 2004-03-16 | Device and method for clamping and positioning workpieces of different lengths between two tips |
DE102004012823 | 2004-03-16 |
Publications (3)
Publication Number | Publication Date |
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EP1577059A2 EP1577059A2 (en) | 2005-09-21 |
EP1577059A3 EP1577059A3 (en) | 2006-03-29 |
EP1577059B1 true EP1577059B1 (en) | 2016-10-12 |
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ID=34833138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP05001961.1A Not-in-force EP1577059B1 (en) | 2004-03-16 | 2005-01-31 | Device and method for clamping and positioning workpieces of divergent length between centres |
Country Status (3)
Country | Link |
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US (1) | US7165483B2 (en) |
EP (1) | EP1577059B1 (en) |
DE (1) | DE102004012823A1 (en) |
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CA2866477C (en) | 2011-12-23 | 2016-03-15 | Williams & White Machine Inc. | Computer controlled multiple axis grinding machine for grinding saw blades |
JP6854118B2 (en) * | 2016-12-19 | 2021-04-07 | トーヨーエイテック株式会社 | Grinding machine center and grinding method using it |
CN107186556A (en) * | 2017-07-21 | 2017-09-22 | 东莞市安源新能源有限公司 | A kind of shaft-like product sanding apparatus |
CN109848769B (en) * | 2019-03-22 | 2020-08-18 | 湖北超卓航空科技股份有限公司 | Device and method for quickly finishing surface of high-hardness coating |
CN112247791A (en) * | 2020-10-20 | 2021-01-22 | 湖州中福人管业科技有限公司 | Pretreatment device used before metal pipeline welding operation |
CN112388424A (en) * | 2020-11-07 | 2021-02-23 | 吴招娣 | Shaft part surface deburring device |
CN112658824A (en) * | 2020-11-12 | 2021-04-16 | 丽水正阳电力建设有限公司 | High strength composite cable pipeline automated production equipment |
CN112692656A (en) * | 2020-11-25 | 2021-04-23 | 黄石市俊优模具材料有限公司 | Self-centering type short pipe polishing device |
CN114473662B (en) * | 2022-01-24 | 2023-08-08 | 库卡机器人(广东)有限公司 | Crankshaft machining mechanism and crankshaft machining equipment |
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DE274585C (en) | ||||
CH366221A (en) * | 1958-12-20 | 1962-12-15 | Fischer Ag Georg | Copy template changing device on copy machine tool |
JPS6039056A (en) * | 1983-08-12 | 1985-02-28 | Fujitsu Ltd | Centering method of external cylindrical grinding machine |
DD274585A1 (en) * | 1988-08-03 | 1989-12-27 | Werkzeugmasch Forschzent | METHOD FOR CARRYING OUT THE CLAMPING MOVEMENT OF THE REAR SOCKET CENTER TIP WHEN TIGHTENING SHAFT WORKPIECES BETWEEN CENTER TIPS |
JPH0683957B2 (en) * | 1988-11-10 | 1994-10-26 | 信越半導体株式会社 | Cylindrical polishing device |
JPH06114702A (en) * | 1992-09-30 | 1994-04-26 | Okuma Mach Works Ltd | Automatic taper correcting device |
DE9306460U1 (en) * | 1993-04-29 | 1993-09-16 | Index-Werke Gmbh & Co Kg Hahn & Tessky, 73730 Esslingen | Automatic lathe |
US5758554A (en) * | 1996-12-05 | 1998-06-02 | Miyano; Toshiharu Tom | Machine tool and method for machining a long-shafted workpiece |
CH692450A5 (en) * | 1997-12-03 | 2002-06-28 | Ewag Ag | Programmatic grinder. |
US6173630B1 (en) * | 1998-02-26 | 2001-01-16 | Hsuan Lung Wu | Working machine for machining a workpiece |
US5941291A (en) * | 1998-04-06 | 1999-08-24 | Thermwood Corporation | Workpiece retaining means for carving machine |
JP2003245855A (en) * | 2001-12-17 | 2003-09-02 | Seiko Instruments Inc | Center support grinding method, center support grinding machine, and centering method for machine |
DE10232394B4 (en) * | 2002-07-17 | 2004-07-22 | Erwin Junker Maschinenfabrik Gmbh | Method and device for grinding a rotating roller |
-
2004
- 2004-03-16 DE DE102004012823A patent/DE102004012823A1/en not_active Withdrawn
-
2005
- 2005-01-31 EP EP05001961.1A patent/EP1577059B1/en not_active Not-in-force
- 2005-03-16 US US11/081,414 patent/US7165483B2/en active Active
Also Published As
Publication number | Publication date |
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EP1577059A2 (en) | 2005-09-21 |
EP1577059A3 (en) | 2006-03-29 |
US7165483B2 (en) | 2007-01-23 |
US20050204880A1 (en) | 2005-09-22 |
DE102004012823A1 (en) | 2005-10-06 |
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