EP0693019B1 - Workbench, especially a teaching aid in the form of an ergonomically designed multi-purpose workbench - Google Patents
Workbench, especially a teaching aid in the form of an ergonomically designed multi-purpose workbench Download PDFInfo
- Publication number
- EP0693019B1 EP0693019B1 EP94911101A EP94911101A EP0693019B1 EP 0693019 B1 EP0693019 B1 EP 0693019B1 EP 94911101 A EP94911101 A EP 94911101A EP 94911101 A EP94911101 A EP 94911101A EP 0693019 B1 EP0693019 B1 EP 0693019B1
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- EP
- European Patent Office
- Prior art keywords
- worktop
- workbench
- clamping
- spindle
- vise
- 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.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/08—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for attachment of work holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/10—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting holders for tool or work
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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
- Y10S269/00—Work holders
- Y10S269/90—Supporting structure having work holder receiving apertures or projections
Definitions
- the invention relates to a workbench, in particular as a teaching aid in the form of an ergonomically designed multi-purpose workbench for use in training in craft activities according to the preamble of patent claim 1.
- a separate workstation should be available at every corner. It should be possible to set up different workstations for left and right-handers on the same workbench. In the case of workplaces for right and left-handers, the clamping jaws are each arranged differently at the corners of the worktop of the workbench. This different arrangement has previously made it necessary to have different workbenches, in each case specifically for right-handers and / or left-handers, in single-workstation or multi-workstation workbenches.
- the invention as a whole strives to work optimally from an ergonomic point of view on such a multi-user workbench by means of a corresponding workbench-related workstation design.
- the auxiliary devices usually used on the workbench, such as the bench hook or other auxiliary tools to be picked up.
- Special attention is also paid to the simple structure of the individual functional and auxiliary devices. This applies particularly to the structure and functionality of the jaws.
- the clamping jaws can be mounted on one and the same workbench in different positions, each suitable for a right- or left-handed person, or, if necessary, implemented in such positions.
- the clamping jaw is simply rotated by 180 degrees around the axis of the clamping spindle. This is possible because the jaw is constructed symmetrically.
- the guide bushes for the guide means additionally guiding the clamping jaw on the worktop are arranged at the same distance from the relevant workbench corner in both clamping jaw positions.
- the implementability of the clamping jaws according to the invention is possible by means of receiving means provided on the worktop at each of the four corners of a workbench.
- the feasibility of a clamping jaw can also be used to convert the clamping jaw into a more favorable position for a left- or right-handed person working on the workbench.
- the additional guide means has a greater distance from the associated workbench corner in relation to the clamping spindle. Compared to conventional clamping jaw guides, this results in a significantly larger distance between the workbench corner and the first guide means - seen from the workbench corner - in the present solution, so that even quite wide parts can be clamped without any problems.
- the additional guide means is expediently a spindle rigidly fastened to the clamping jaw and axially freely displaceable in the worktop, on which a spindle nut which is countersunk in the clamping surface of the clamping jaw is attached to achieve a clamping jaw tension compensation against the worktop.
- This measure simplifies the design in that the functions of the additional jaw guide and the tension compensation are combined in a single part.
- the tension compensation spindle is guided in the worktop only axially freely displaceable in a cylindrical bore. In the worktop, in particular, no spindle nut engages this tension compensation spindle.
- the design as a spindle only serves to clamp the spindle nut lying outside the worktop in order to achieve the tension compensation with respect to the worktop.
- Such a tension compensation may be necessary to avoid skewing of the clamping jaw when clamping a workpiece in the direct workbench corner area.
- the functions "guiding” and “tension compensation” can only be combined if the tension compensation spindle in both possible working positions of the clamping jaw has the greater distance from the relevant workbench corner according to the invention compared to the clamping spindle axis.
- workpieces are not only clamped between the clamping jaw itself and the adjacent worktop side surface, but also between bench hooks that can be variably attached to the worktop and the clamping jaw.
- receiving openings for bench hooks are usually provided in various distributions on the worktop and on the clamping jaw itself.
- these openings are circular and in each case distributed along each clamping spindle guide axis over the entire length of the worktop.
- the openings are at the same distance from each other, which also corresponds to the maximum span between the clamping jaw and worktop.
- At least one receiving opening is also arranged perpendicular to the clamping spindle axis in the clamping jaw. Such an arrangement of the receiving openings allows workpieces to be clamped along the axis of the clamping spindle relative to this axis without torque. In these cases, tension compensation on the clamping jaw is not necessary. Since the clamping jaw can be used in rotated positions, the receiving opening in question must of course be on the relevant one two upward-facing jaw surfaces of the jaw are present.
- the arrangement and orientation of the receiving openings described above results in a uniform grid of receiving openings, with one receiving opening always being aligned in the axial direction in the clamping spindle axis on the clamping jaw.
- the receiving openings distributed in this way allow in particular a good and simple clamping of round workpieces or of workpieces with non-plane-parallel edges within a total of three bench hooks. Two of these bench hooks can be located on the worktop and one on the clamping jaw or vice versa.
- the depth of the receiving openings for the bench hooks is such that the bench hooks can be inserted flush into the surface of the worktop.
- This offers the advantage that almost arbitrarily flat workpieces, such as sheet metal, can be clamped without fear of "getting caught" on the bench hooks which otherwise protrude above the workpiece surface during their superficial processing.
- the openings for the bench hooks can be blind holes of appropriate depth or through-bores each with an annular step for flush abutment of the bench hooks when they are pushed flush into the worktop.
- Continuous receiving bores with only one ring shoulder as a stop for the bench hooks offer the advantage that chips which have undesiredly penetrated into these openings can fall through downwards or be removed there.
- the bench hooks are preferably made of metal and have a cylindrical basic shape. To at any height within To be fixable of the receiving openings, the bench hooks are equipped with radially outwardly acting spring means in the area of their cylindrical basic shape.
- the spring means can be accommodated in a bore diametrically penetrating the bench hook and can consist of a ball projecting radially from the bore under the pressure of a helical spring.
- the ball can rest against a ring step within the bench hook hole and the coil spring can be supported on a closure piece of the bench hook hole at the other end thereof.
- a particularly advantageous clamping behavior can be achieved with the bench hooks in that they have a flattened circumferential area at one end, which protrudes from the worktop surface when a workpiece is clamped, which extends in each case over the height at which the bench hooks with a maximum load capacity sufficient storage in the receiving opening of the worktop can protrude from it at most.
- This flattening allows workpieces with a flat, rectangular contact surface to lie flat against the bench hook. Because of the round basic shape of the bench hooks, they can still be rotated in their receiving openings. Due to the round basic shape and the flattened contact surfaces of the bench hooks, with additional consideration of the distribution of the receiving openings according to the invention within a specifically predetermined grid on the worktop, excellent previously unachievable clamping constellations can be achieved with ease.
- the workbench according to the invention described with all its various designs and auxiliary devices ideally corresponds to the requirements placed on a workbench in a training facility.
- a very important advantage is that left and right-handed workplaces can be changed and / or combined as required by simple implementation of the clamping jaws on one and the same workbench.
- a workbench has a worktop 2 placed on continuously and centrally height-adjustable legs 1 made of wood, for example, and is equipped with four workstations.
- Such multi-station workbenches are used, for example, in training centers for all kinds of manual work.
- Such workbenches are very well suited, among other things, for the training of carpenters.
- each of these clamping jaws 3 is guided and mounted in the worktop 2 via a clamping spindle 4 and can be clamped against it by actuating the clamping lever 5.
- the guide bearing for the clamping spindle 4 in the worktop 2 is in each case a metallic bushing 6.
- the clamping spindle 4 is rotatably mounted in an axially fixed manner.
- the spindle nut 7 required for the longitudinal displacement of the clamping spindle 4 is mounted in the worktop 2. The position of this spindle nut 7 within the worktop and its special shape will be discussed in more detail below.
- the clamping jaw 3 has the shape of a cuboid, which, when in contact with the worktop 2, on the one hand with the worktop surface and on the other hand with the worktop side surface 8, which runs perpendicular to the longitudinal extension of the cuboid, is flush with the surface.
- the clamping spindle 4 penetrates the clamping jaw 3 in the center of the surface of the square side of this clamping jaw 3 that can be placed on the worktop 2.
- a guide spindle 9 which is fixedly connected to the clamping jaw 3 and which can be moved longitudinally in the worktop 2 in a smooth guide bush 10 provided there serves as guide means for securing the clamping jaw 3 against rotation during clamping.
- this spindle 9 also serves as a tension compensation device in the jaw.
- tension compensation devices are generally used in clamping jaws of workbenches to prevent the clamping jaw from sloping when clamping workpieces at only one end of the clamping jaw.
- the receptacles formed by the guide bushings 6 and 10 for the tensioning and tension compensation spindles 4 and 9 on the worktop 2 are fitted symmetrically in pairs on each worktop corner to each side of the corner. Of this pair of receptacles, only one is occupied, namely the one that is suitable for a position of the clamping jaw 3 for a left-handed or right-handed person.
- the insertion and repositioning of the clamping jaw 3 with its spindles 4 and 9 is very simple.
- the mounting of the clamping jaw 3 in the spindle nut 7 of the worktop 2 can be released by actuating the clamping lever 5.
- the clamping jaw 3 can then be easily pulled out of the guide bushes 6 and 10.
- the clamping jaw 3 is for mounting in the second pair of receptacles assigned to the relevant workbench corner and formed by the bushes 6 'and 10' only by 180 degrees, inserted and inserted by actuating the clamping lever 5 into the other mounting of the clamping jaw 3.
- a left-handed or right-handed workplace can be set up differently at each workbench corner and changed if necessary. 1 shows, for example, a workbench with two right-handed and two left-handed workplaces.
- the openings 12 can be formed as blind holes or through holes.
- the depth of the blind holes is in each case matched to the height of the bench hooks 13, so that these are flush with the worktop surface when fully inserted into the opening 12.
- an annular step must be provided which fulfills the function of the blind hole base with reference to an insertion limit for the bench hooks 13.
- only one or two bench hooks 13 are generally used on the worktop side.
- the remaining openings 12 not occupied by bench hooks 13 are each closed by loose, easily removable filler pieces 14.
- At least one receiving opening 12 for a bench hook 13 is arranged on the axis of the clamping spindle 4 on the clamping jaw 3.
- the clamping jaw 3 enables practically torque-free clamping within the bench hook 13.
- the arrangement of the receiving openings 12 which is symmetrical to the axis of the bushes 6 and 6 'is decisive for this.
- the clamping jaw 3 In addition to the opening 12 lying on the axis, two further openings 12 lying symmetrically to this axis are provided on the clamping jaw 3. This symmetrical arrangement also serves to avoid moments when clamping the workpiece in three bench hooks 13.
- the receiving openings 12 are each provided on the two opposing clamping jaw surfaces 15 and 16 in the same distribution, in order to insert the clamping jaws 3 into the left and right Right-handed jobs differ To be able to twist positions and use them equally.
- the only double-function spindle nut 7 of a work station is attached to the intersection of the axes of the two bushings 6 and 6 'in the worktop 2.
- the bench hooks 13 have a clamping mechanism in order to be able to be locked at any height within the openings 12.
- This clamping mechanism is accommodated in a hole 17 in the foot of the bench hook 13 which pierces the bench hook diametrically. It consists of a ball 19 pushed radially outward beyond the circumference of the hook by a helical spring 18, the helical spring 18 being supported on a closure piece 20 at the other end of the bore. Due to an annular step provided in the bore 17, the ball 19 cannot completely leave the bore 17.
- each bench hook 13 has a flattened area 21 in its head zone. Due to the cylindrical basic shape of the bench hook 13, the clamping surface can be aligned flat on the workpiece counter surface to be clamped. With the bench hook design and arrangement described, in particular round workpieces and workpieces with non-plane-parallel edges can be clamped very well.
- the flattened area 21 of the bench hook 13 is slightly inclined with respect to the bench hook axis in such a direction that a slight tilting of the bench hook 13 is maintained under tension. In this way, the clamping surface of the bench hook 13 is aligned perpendicular to the worktop surface under pressure.
- a recess 22 is machined into the flattened area 21. This can be engaged with a rod-shaped gripping tool 23 provided with a barb at one end for pulling it out.
- the filler pieces 14 are also provided with recesses for attaching the same gripping tool 23 on their two flat end faces for the same purpose of removal. When not in use, this gripping tool 23 is stored in a receiving bore of the clamping jaw 3 provided for this purpose.
Abstract
Description
Die Erfindung betrifft eine Werkbank, insbesondere als Lehrmittel in der Form einer ergonomisch gestalteten Mehrzweck-Werkbank zum Einsatz bei der Ausbildung in handwerklichen Tätigkeiten nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a workbench, in particular as a teaching aid in the form of an ergonomically designed multi-purpose workbench for use in training in craft activities according to the preamble of patent claim 1.
An einer solchen vornehmlich im Lehrbetrieb eingesetzten Werkbank soll an jeder Ecke ein getrennter Arbeitsplatz vorsehbar sein. Dabei soll es an ein und der gleichen Werkbank möglich sein, unterschiedliche Arbeitsplätze für Links- und Rechtshänder einzurichten. Bei Arbeitsplätzen für Rechts- und Linkshänder sind die Spannbacken jeweils unterschiedlich an den Ecken der Arbeitsplatte der Werkbank angeordnet. Diese unterschiedliche Anordnung hat bei Ein- oder Mehrplatz-Werkbänken bisher unterschiedliche Werkbänke, jeweils spezifisch für Rechts- und/oder Linkshänder, erforderlich gemacht.On such a workbench, which is mainly used in teaching, a separate workstation should be available at every corner. It should be possible to set up different workstations for left and right-handers on the same workbench. In the case of workplaces for right and left-handers, the clamping jaws are each arranged differently at the corners of the worktop of the workbench. This different arrangement has previously made it necessary to have different workbenches, in each case specifically for right-handers and / or left-handers, in single-workstation or multi-workstation workbenches.
Bei den bisher bekannten Werkbänken (wie beispielsweise nach CH-A-114327 und DE-C-192703) besaß eine Werkbank immer nur entweder ausschließlich Arbeitsplätze für Rechtshänder oder solche für Linkshänder. Dies folgt daraus, daß die Spannbacken für Rechts- und Linkshänder an den Werkbankecken unterschiedlich angeordnet sein müssen. Links- und Rechtshänder mußten daher stets an getrennten jeweils für sie ausgerichteten Werkbänken arbeiten. Um daher sowohl für Links- als auch für Rechtshänder bei von Gruppe zu Gruppe oder von Ausbildungsklasse zu Ausbildungsklasse variierenden Aufteilungsverhältnissen zwischen Links- und Rechtshändern genügend passende Arbeitsplätze zu haben, mußten in der Regel mehr Werkbänke zum Einsatz bereit stehen, als es bei Besetzbarkeit sämtlicher Arbeitsplätze ohne Rücksicht auf unterschiedliche Handausrichtung der Auszubildenden erforderlich wäre.With the previously known workbenches (such as, for example, according to CH-A-114327 and DE-C-192703), a workbench only ever had workstations for right-handers or those for left-handers. This follows from the fact that the jaws for right and left-handers must be arranged differently on the workbench corners. Left and right-handers therefore always had to work on separate workbenches designed for them. So therefore In order to have enough suitable workplaces for left-handed as well as right-handed people in the case of division ratios between left-handed and right-handed people, which varied from group to group or from training class to training class, more workbenches generally had to be available than if all workplaces were manageable without consideration to different hand orientation of the trainees would be required.
Hier eine Verbesserung in Richtung einer rationelleren Ausnutzung der auf Rechts- und Linkshänder ausgerichteten Arbeitsplätze an Mehrplatz-Werkbänken zu schaffen, ist ein wesentliches Problem, mit dem sich die vorliegende Erfindung beschäftigt. Darüber hinaus strebt die Erfindung insgesamt eine unter ergonomischen Gesichtspunkten optimale Arbeit an einer solchen Mehrplatz-Werkbank durch eine entsprechende werkbankbedingte Arbeitsplatzgestaltung an. Einbezogen bei dieser Zielausrichtung sind insbesondere auch die an der Werkbank üblicherweise zum Einsatz kommenden Hilfseinrichtungen wie unter anderem die Bankhaken oder andere aufzunehmende Hilfswerkzeuge. Ein spezielles Augenmerk wird auch auf einen einfachen Aufbau der einzelnen Funktions- und Hilfseinrichtungen gerichtet. Dies gilt in ganz besonderem Maße dem Aufbau und der Funktionalität der Spannbacken.To create an improvement here in the direction of a more rational use of the right-handed and left-handed workplaces on multi-seat workbenches is an essential problem with which the present invention is concerned. In addition, the invention as a whole strives to work optimally from an ergonomic point of view on such a multi-user workbench by means of a corresponding workbench-related workstation design. Included in this target orientation are in particular the auxiliary devices usually used on the workbench, such as the bench hook or other auxiliary tools to be picked up. Special attention is also paid to the simple structure of the individual functional and auxiliary devices. This applies particularly to the structure and functionality of the jaws.
Der Nachteil des bisher durch den Einsatz unterschiedlicher Werkbänke für Links- und Rechtshänder bedingten unrationellen Vorhaltens von mehr Arbeitsplätzen bzw. Werkbänken als für die wirkliche Anzahl eingesetzter Auszubildender eigentlich erforderlich wäre, wird durch die Bereitstellung einer Werkbank mit den kennzeichnenden Merkmalen des Patentanspruchs 1 auf recht einfache und wirkungsvolle Weise beseitigt.The disadvantage of the inefficient provision of more workstations or workbenches than was actually necessary for the actual number of apprentices employed, which was previously caused by the use of different workbenches for left-handed and right-handed people, is made quite simple by the provision of a workbench with the characterizing features of patent claim 1 and effectively eliminated.
Durch die symmetrische Ausbildung und Führung der einzelnen Spannbacken gegenüber der Arbeitsplatte der Werkbank lassen sich die Spannbacken an ein und der gleichen Werkbank in unterschiedlichen jeweils für einen Rechts- oder Linkshänder geeigneten Position montieren bzw. bei Bedarf in solche Positionen umsetzen. Beim Umsetzen einer Spannbacke von einer Seite der Ecke einer Werkbank auf die andere Seite der gleichen Ecke wird die Spannbacke einfach nur um 180 Winkelgrade um die Achse der Spann-Spindel verdreht. Dies ist möglich, weil die Spannbacke entsprechend symmetrisch aufgebaut ist. Durch diese Verdrehbarkeit der Spannbacke sind die Führungsbüchsen für die die Spannbacke an der Arbeitsplatte zusätzlich führenden Führungsmittel in beiden Spannbacken-Positionen in dem gleichen Abstand von der betreffenden Werkbankecke angeordnet.Due to the symmetrical design and guidance of the individual clamping jaws relative to the worktop of the workbench, the clamping jaws can be mounted on one and the same workbench in different positions, each suitable for a right- or left-handed person, or, if necessary, implemented in such positions. When moving a clamping jaw from one side of the corner of a workbench to the other side of the same corner, the clamping jaw is simply rotated by 180 degrees around the axis of the clamping spindle. This is possible because the jaw is constructed symmetrically. As a result of this rotatability of the clamping jaw, the guide bushes for the guide means additionally guiding the clamping jaw on the worktop are arranged at the same distance from the relevant workbench corner in both clamping jaw positions.
Die erfindungsgemäße Umsetzbarkeit der Spannbacken ist durch entsprechend an der Arbeitsplatte vorgesehene Aufnahmemittel an jeder der vier Ecken einer Werkbank möglich. Die Umsetzbarkeit einer Spannbacke kann auch dazu genutzt werden, im Einzelfall einmal die Spannbacke in eine für einen an der Werkbank arbeitenden Links- oder Rechtshänder günstigere Position umzusetzen.The implementability of the clamping jaws according to the invention is possible by means of receiving means provided on the worktop at each of the four corners of a workbench. The feasibility of a clamping jaw can also be used to convert the clamping jaw into a more favorable position for a left- or right-handed person working on the workbench.
Als für die Handhabung der Spannbacke vorteilhaft wird es angesehen, wenn das neben der Spann-Spindel zusätzliche Führungsmittel jeweils gegenüber der Spann-Spindel den größeren Abstand gegenüber der zugeordneten Werkbankecke besitzt. Dadurch ergibt sich - gegenüber herkömmlichen Spannbacken-Führungen - bei der vorliegenden Lösung ein deutlich größerer Abstand zwischen der Werkbankecke und dem - von der Werkbankecke aus gesehen - ersten Führungsmittel, so daß auch recht breite Teile problemlos eingespannt werden können.It is considered to be advantageous for the handling of the clamping jaw if, in addition to the clamping spindle, the additional guide means has a greater distance from the associated workbench corner in relation to the clamping spindle. Compared to conventional clamping jaw guides, this results in a significantly larger distance between the workbench corner and the first guide means - seen from the workbench corner - in the present solution, so that even quite wide parts can be clamped without any problems.
Das zusätzliche Führungsmittel ist zweckmäßigerweise eine an der Spannbacke starr befestigte und in der Arbeitsplatte axial frei verschiebbare Spindel, auf der eine in der Spannfläche der Spannbacke versenkbare Spindelmutter zur Erzielung eines Spannbacken-Spannungsausgleichs gegen die Arbeitsplatte angebracht ist. Durch diese Maßnahme wird eine konstruktive Vereinfachung dahingehend erreicht, daß die Funktionen der zusätzlichen Spannbacken-Führung und des Spannungsausgleichs in einem einzigen Teil zusammengefaßt sind. Die Spannungsausgleichs-Spindel ist in der Arbeitsplatte lediglich in einer zylindrischen Bohrung axial frei verschiebbar geführt. In der Arbeitsplatte greift insbesondere keine Spindelmutter an dieser Spannungsausgleichs-Spindel an. Die Ausbildung als Spindel dient lediglich dazu, die außerhalb der Arbeitsplatte liegende Spindelmutter zur Erzielung des Spannungsausgleichs gegenüber der Arbeitsplatte zu verspannen. Ein solcher Spannungsausgleich kann erforderlich sein, um beim Spannen eines Werkstückes im direkten Werkbankeckbereich ein Schrägstellen der Spannbacke zu vermeiden. Das Zusammenfassen der Funktionen "Führen" und "Spannungsausgleich" ist nur möglich, wenn die Spannungsausgleichs-Spindel in beiden möglichen Arbeitsstellungen der Spannbacke jeweils den gegenüber der Spann-Spindelachse erfindungsgemäß größeren Abstand von der betreffenden Werkbankecke besitzt.The additional guide means is expediently a spindle rigidly fastened to the clamping jaw and axially freely displaceable in the worktop, on which a spindle nut which is countersunk in the clamping surface of the clamping jaw is attached to achieve a clamping jaw tension compensation against the worktop. This measure simplifies the design in that the functions of the additional jaw guide and the tension compensation are combined in a single part. The tension compensation spindle is guided in the worktop only axially freely displaceable in a cylindrical bore. In the worktop, in particular, no spindle nut engages this tension compensation spindle. The design as a spindle only serves to clamp the spindle nut lying outside the worktop in order to achieve the tension compensation with respect to the worktop. Such a tension compensation may be necessary to avoid skewing of the clamping jaw when clamping a workpiece in the direct workbench corner area. The functions "guiding" and "tension compensation" can only be combined if the tension compensation spindle in both possible working positions of the clamping jaw has the greater distance from the relevant workbench corner according to the invention compared to the clamping spindle axis.
Auf der gattungsgemäßen Werkbank werden Werkstücke nicht nur zwischen der Spannbacke selbst und der angrenzenden Arbeitsplatten-Seitenfläche eingespannt, sondern auch zwischen sogenannten auf der Arbeitsplatte und der Spannbacke variabel anbringbaren Bankhaken. Zu diesem Zweck sind üblicherweise in verschiedenartigen Verteilungen auf der Arbeitsplatte und auf der Spannbacke selbst Aufnahmeöffnungen für Bankhaken angebracht.On the generic workbench, workpieces are not only clamped between the clamping jaw itself and the adjacent worktop side surface, but also between bench hooks that can be variably attached to the worktop and the clamping jaw. For this purpose, receiving openings for bench hooks are usually provided in various distributions on the worktop and on the clamping jaw itself.
Bei einer recht vorteilhaften Anordnung dieser Aufnahmeöffnungen auf der Arbeitsplatte sind diese Öffnungen kreisförmig und jeweils längs jeder Spann-Spindel-Führungsachse über die gesamte Arbeitsplattenlänge verteilt. Untereinander haben die Öffnungen dabei jeweils den gleichen Abstand, der maximal auch der maximalen Spannweite zwischen Spannbacke und Arbeitsplatte entspricht.In a quite advantageous arrangement of these receiving openings on the worktop, these openings are circular and in each case distributed along each clamping spindle guide axis over the entire length of the worktop. The openings are at the same distance from each other, which also corresponds to the maximum span between the clamping jaw and worktop.
Auch in der Spannbacke ist mindestens eine Aufnahmeöffnung lotrecht zur Spann-Spindelachse angeordnet. Durch eine solche Anordnung der Aufnahmeöffnungen können Werkstücke längs der Spann-Spindelachse gegenüber dieser Achse momentfrei eingespannt werden. In diesen Fällen ist dann kein Spannungsausgleich an der Spannbacke notwendig. Da die Spannbacke in verdrehten Lagen einsetzbar ist, muß die betreffende Aufnahmeöffnung selbstverständlich auf den betreffenden beiden nach oben zu liegen kommenden Spannbacken-Oberflächen der Spannbacke vorhanden sein.At least one receiving opening is also arranged perpendicular to the clamping spindle axis in the clamping jaw. Such an arrangement of the receiving openings allows workpieces to be clamped along the axis of the clamping spindle relative to this axis without torque. In these cases, tension compensation on the clamping jaw is not necessary. Since the clamping jaw can be used in rotated positions, the receiving opening in question must of course be on the relevant one two upward-facing jaw surfaces of the jaw are present.
Auf der Arbeitsplatte ergibt die vorbeschriebene Anordnung und Ausrichtung der Aufnahmeöffnungen ein gleichmäßiges Raster an Aufnahmeöffnungen, wobei in der Spann-Spindelachse auf der Spannbacke immer eine Aufnahmeöffnung in Achsrichtung fluchtet. Die derart verteilten Aufnahmeöffnungen erlauben insbesondere ein gutes und einfaches Einspannen runder Werkstücke oder von Werkstücken mit nicht planparallelen Kanten innerhalb insgesamt drei Bankhaken. Dabei können von diesen Bankhaken jeweils zwei sich auf der Arbeitsplatte und einer sich auf der Spannbacke befinden oder umgekehrt.On the worktop, the arrangement and orientation of the receiving openings described above results in a uniform grid of receiving openings, with one receiving opening always being aligned in the axial direction in the clamping spindle axis on the clamping jaw. The receiving openings distributed in this way allow in particular a good and simple clamping of round workpieces or of workpieces with non-plane-parallel edges within a total of three bench hooks. Two of these bench hooks can be located on the worktop and one on the clamping jaw or vice versa.
Die Aufnahmeöffnungen für die Bankhaken sind tiefenmäßig so ausgelegt, daß die Bankhaken flächenschlüssig in die Oberfläche der Arbeitsplatte einschiebbar sind. Das bietet den Vorteil, daß nahezu beliebig flache Werkstücke, etwa Bleche, eingespannt werden können, ohne daß bei deren oberflächlichen Bearbeitung etwa ein "Hängenbleiben" an den ansonsten über die Werkstückoberfläche überstehenden Bankhaken befürchtet werden muß. Die Öffnungen für die Bankhaken können Sacklochbohrungen entsprechender Tiefe sein oder Durchgangsbohrungen mit jeweils einer Ringstufe zum bündigen Anschlag der Bankhaken, wenn diese flächenschlüssig in die Arbeitsplatte eingeschoben sind. Durchgehende Aufnahmebohrungen mit lediglich einem Ringabsatz als Anschlag für die Bankhaken bieten den Vorteil, daß in diese Öffnungen unerwünscht eingedrungene Späne nach unten durchfallen bzw dorthin entfernt werden können.The depth of the receiving openings for the bench hooks is such that the bench hooks can be inserted flush into the surface of the worktop. This offers the advantage that almost arbitrarily flat workpieces, such as sheet metal, can be clamped without fear of "getting caught" on the bench hooks which otherwise protrude above the workpiece surface during their superficial processing. The openings for the bench hooks can be blind holes of appropriate depth or through-bores each with an annular step for flush abutment of the bench hooks when they are pushed flush into the worktop. Continuous receiving bores with only one ring shoulder as a stop for the bench hooks offer the advantage that chips which have undesiredly penetrated into these openings can fall through downwards or be removed there.
Die Bankhaken bestehen vorzugsweise aus Metall und besitzen eine zylindrische Grundform. Um in beliebigen Höhen innerhalb der Aufnahmeöffnungen fixierbar zu sein, sind die Bankhaken im Bereich ihrer zylindrischen Grundform mit nach radial außen wirkenden Federmitteln ausgestattet.The bench hooks are preferably made of metal and have a cylindrical basic shape. To at any height within To be fixable of the receiving openings, the bench hooks are equipped with radially outwardly acting spring means in the area of their cylindrical basic shape.
Bei einer günstigen Ausgestaltung können die Federmittel in einer den Bankhaken diametral durchdringenden Bohrung untergebracht sein und aus einer aus der Bohrung radial unter dem Druck einer Schraubenfeder herausragenden Kugel bestehen. Dabei kann die Kugel an einer Ringstufe innerhalb der Bankhaken-Bohrung anliegen und die Schraubenfeder sich an einem Verschlußstück der Bankhaken-Bohrung an deren anderem Ende abstützen.In a favorable embodiment, the spring means can be accommodated in a bore diametrically penetrating the bench hook and can consist of a ball projecting radially from the bore under the pressure of a helical spring. The ball can rest against a ring step within the bench hook hole and the coil spring can be supported on a closure piece of the bench hook hole at the other end thereof.
Ein besonders vorteilhaftes Einspannverhalten kann bei den Bankhaken dadurch erreicht werden, daß sie an ihrem einen Ende, das beim Einspannen eines Werkstückes aus der Arbeitsplattenoberfläche herausragt, einen abgeflachten Umfangsbereich besitzen, der sich jeweils über diejenige Höhe erstreckt, mit der der Bankhaken bei unter maximaler Belastbarkeit noch ausreichender Lagerung in der Aufnahmeöffnung der Arbeitsplatte maximal aus dieser herausragen kann.A particularly advantageous clamping behavior can be achieved with the bench hooks in that they have a flattened circumferential area at one end, which protrudes from the worktop surface when a workpiece is clamped, which extends in each case over the height at which the bench hooks with a maximum load capacity sufficient storage in the receiving opening of the worktop can protrude from it at most.
Durch diese Abflachung können Werkstücke mit einer ebenen rechtwinkligen Anlagefläche flächig an dem Bankhaken anliegen. Wegen der runden Grundform der Bankhaken können diese jedoch dennoch beliebig in ihren Aufnahmeöffnungen verdreht werden. Durch die runde Grundform und die abgeflachten Anlageflächen der Bankhaken sind unter zusätzlicher Berücksichtigung der erfindungsgemäßen Verteilung der Aufnahmeöffnungen innerhalb eines konkret vorgegebenen Rasters auf der Arbeitsplatte ausgezeichnete bisher nicht erreichbare Einspannkonstellationen mühelos erzielbar.This flattening allows workpieces with a flat, rectangular contact surface to lie flat against the bench hook. Because of the round basic shape of the bench hooks, they can still be rotated in their receiving openings. Due to the round basic shape and the flattened contact surfaces of the bench hooks, with additional consideration of the distribution of the receiving openings according to the invention within a specifically predetermined grid on the worktop, excellent previously unachievable clamping constellations can be achieved with ease.
Die mit all ihren vielfältigen Ausgestaltungen und Hilfseinrichtungen beschriebene erfindungsgemäße Werkbank entspricht in idealer Weise den in einer Ausbildungsstätte an eine Werkbank gestellten Anforderungen. Dabei besteht ein ganz wesentlicher Vorteil darin, daß durch einfache Umsetzbarkeit der Spannbacken an ein und der gleichen Werkbank Links- und Rechtshänder-Arbeitsplätze je nach Wunsch verändert und/oder kombiniert werden können.The workbench according to the invention described with all its various designs and auxiliary devices ideally corresponds to the requirements placed on a workbench in a training facility. A very important advantage is that left and right-handed workplaces can be changed and / or combined as required by simple implementation of the clamping jaws on one and the same workbench.
Ein nachfolgend noch näher zu erläuterndes Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt.An embodiment of the invention to be explained in more detail below is shown in the drawing.
Es zeigen
- Fig. 1
- eine perspektivische Darstellung einer Werkbank, bei der die gesamte Werkbank mit strichpunktierten Linien angedeutet und eine Werkbankecke detailliert gezeichnet ist,
- Fig. 2 a) und b)
- je einen Schnitt durch zwei unterschiedliche Ausführungsformen einer in jeder Ecke der Werkbank-Arbeitsplatte angebrachten Doppelfunktions-Spindelmutter zur Aufnahme der Spann-Spindel in um 90 Winkelgrad versetzten Lagen,
- Fig. 3
- die Draufsicht auf einen Bankhaken,
- Fig. 4
- einen Längsschnitt durch den Bankhaken nach Fig. 3,
- Fig. 1
- 1 shows a perspective representation of a workbench, in which the entire workbench is indicated by dash-dotted lines and a workbench corner is drawn in detail,
- 2 a) and b)
- a section through two different embodiments of a double-function spindle nut attached in each corner of the workbench worktop for receiving the clamping spindle in positions offset by 90 degrees,
- Fig. 3
- the top view of a bench hook,
- Fig. 4
- 3 shows a longitudinal section through the bench hook according to FIG. 3,
Eine Werkbank besitzt eine auf stufenlos und zentral höhenverstellbare Beine 1 aufgesetzte Arbeitsplatte 2 aus beispielsweise Holz und ist mit vier Arbeitsplätzen ausgerüstet. Verwendet werden solche Mehrplatz-Werkbänke beispielsweise in Ausbildungsstätten für alle möglichen handwerklichen Tätigkeiten. Sehr gut geeignet sind solche Werkbänke unter anderem bei der Ausbildung von Schreinern.A workbench has a worktop 2 placed on continuously and centrally height-adjustable legs 1 made of wood, for example, and is equipped with four workstations. Such multi-station workbenches are used, for example, in training centers for all kinds of manual work. Such workbenches are very well suited, among other things, for the training of carpenters.
An jedem der vier Arbeitsplätze befindet sich eine Spannbacke 3. Jede dieser Spannbacken 3 ist über eine Spann-Spindel 4 in der Arbeitsplatte 2 geführt und gelagert und gegen diese unter Betätigung des Spannhebels 5 spannbar. Das Führungslager für die Spann-Spindel 4 in der Arbeitsplatte 2 ist jeweils eine metallische Buchse 6. Innerhalb der Spannbacke 3 ist die Spann-Spindel 4 jeweils axial fixiert drehbar gelagert. Die zur Längsverschiebung der Spann-Spindel 4 erforderliche Spindelmutter 7 ist in der Arbeitsplatte 2 angebracht. Auf die Lage dieser Spindelmutter 7 innerhalb der Arbeitsplatte sowie deren spezieller Formgestaltung wird weiter unter noch näher eingegangen werden.At each of the four work stations there is a clamping jaw 3. Each of these clamping jaws 3 is guided and mounted in the worktop 2 via a clamping spindle 4 and can be clamped against it by actuating the clamping
Die Spannbacke 3 weist die Form eines Quaders auf, der bei Anlage an der Arbeitsplatte 2 einerseits mit der Arbeitsplattenoberfläche und andererseits mit der Arbeitsplattenseitenfläche 8, die senkrecht zu der Längserstreckung des Quaders verläuft, jeweils flächenschlüssig abschließt. Die Spann-Spindel 4 durchstößt die Spannbacke 3 in dem Flächenmittelpunkt der an die Arbeitsplatte 2 anlegbaren Quaderseite dieser Spannbacke 3.The clamping jaw 3 has the shape of a cuboid, which, when in contact with the worktop 2, on the one hand with the worktop surface and on the other hand with the worktop side surface 8, which runs perpendicular to the longitudinal extension of the cuboid, is flush with the surface. The clamping spindle 4 penetrates the clamping jaw 3 in the center of the surface of the square side of this clamping jaw 3 that can be placed on the worktop 2.
Als Führungsmittel zur Verdrehsicherung der Spannbacke 3 beim Spannen dient eine fest mit der Spannbacke 3 verbundene Führungs-Spindel 9, die in der Arbeitsplatte 2 in einer dort vorgesehenen glatten Führungsbuchse 10 längsverschiebbar ist. Außer als Spannbacken-Führungsmittel dient diese Spindel 9 bei der Spannbacke auch noch als Spannungsausgleichseinrichtung. An sich bekannte Spannungsausgleichseinrichtungen dienen bei Spannbacken von Werkbänken ganz allgemein dazu, ein beim Spannen von Werkstücken an nur einem Ende der Spannbacke sich einstellendes Schrägstellen der Spannbacke zu vermeiden. Bei der vorliegenden Ausführung wird dieser Spannungsausgleich dadurch erreicht, daß eine auf der Spannungsausgleichs-Spindel 9 in der Spannbacke 3 versenkbare Spindelmutter 11 gegen die Arbeitsplatte 2 spannbar ist, wodurch eine Spannbacken-Schrägstellung beim Spannen eines Werkstückes wirkungsvoll vermieden werden kann.A guide spindle 9 which is fixedly connected to the clamping jaw 3 and which can be moved longitudinally in the worktop 2 in a
Die von den Führungs-Buchsen 6 und 10 gebildeten Aufnahmen für die Spann- und Spannungsausgleichs-Spindeln 4 bzw.9 an der Arbeitsplatte 2 sind jeweils an jeder Arbeitsplattenecke zu jeder Seite der Ecke symmetrisch paarweise angebracht. Besetzt ist von diesem Aufnahmepaar jeweils immer nur eines und zwar dasjenige, das für eine Lage der Spannbacke 3 für einen Links- oder Rechtshänder geeignet ist. Das Einsetzen und Umsetzen der Spannbacke 3 mit ihren Spindeln 4 und 9 ist ganz einfach.The receptacles formed by the
Die Lagerung der Spannbacke 3 in der Spindelmutter 7 der Arbeitsplatte 2 ist über eine Betätigung des Spannhebels 5 zu lösen. Die Spannbacke 3 kann dann leicht aus den Führungsbuchsen 6 und 10 herausgezogen werden. Die Spannbacke 3 ist zur Montage in dem zweiten der betreffenden Werkbankecke zugeordneten von den Buchsen 6' und 10' gebildeten Aufnahmepaar lediglich um 180 Winkelgrade zu verdrehen, einzuschieben und durch Betätigung des Spannhebels 5 in die andere Lagerung des Spannbacke 3 einzuführen. Auf diese Weise kann ein Links- oder Rechtshänderarbeitsplatz je nach Bedarf an jeder Werkbankecke anders hergerichtet und ggf. wieder geändert werden. In der Fig. 1 ist beispielsweise eine Werkbank mit zwei Rechtshänder- und zwei Linkshänder-Arbeitsplätzen dargestellt.The mounting of the clamping jaw 3 in the
Auf der Arbeitsplatte 2 sind jeweils in Achsrichtung der Buchsen 6 und6' über die gesamte Länge der Arbeitsplatte in gleichen Abständen zylindrische Aufnahmeöffnungen 12 für Bankhaken 13 mit zylindrischer Grundform vorgesehen. Die Öffnungen 12 können als Sackloch- oder Durchgangsbohrungen ausgebildet sein. Die Tiefe der Sacklochbohrungen ist jeweils auf die Höhe der Bankhaken 13 abgestimmt, damit diese bei vollständigem Einschub in die Öffnung 12 flächenbündig mit der Arbeitsplattenoberfläche abschließen. Bei Durchgangsbohrungen muß eine Ringstufe vorgesehen sein, die die Funktion des Sacklochbodens mit Bezug auf eine Einschubbegrenzung für die Bankhaken 13 erfüllt. Im Bereich eines Arbeitsplatzes sind arbeitsplattenseitig in der Regel jeweils nur ein oder zwei Bankhaken 13 im Einsatz. Die übrigen von Bankhaken 13 nicht besetzten Öffnungen 12 sind jeweils durch lose, leicht wieder herausnehmbare Füllstücke 14 verschlossen.On the worktop 2 are in each case in the axial direction of the
Auf der Spannbacke 3 ist zumindest eine Aufnahmeöffnung 12 für einen Bankhaken 13 auf der Achse der Spann-Spindel 4 angeordnet. Durch die Anordnung einer Aufnahmeöffnung 12 direkt über der Achse der Spann-Spindel 4 ist mit der Spannbacke 3 ein praktisch momentenfreies Spannen innerhalb der Bankhaken 13 möglich. Auf der Arbeitsplatte 2 ist hierfür die symmetrisch zu der Achse der Buchsen 6 und 6' gegebene Anordnung der Aufnahmeöffnungen 12 maßgebend.At least one receiving
Auf der Spannbacke 3 sind außer der auf der Achse liegenden Öffnung 12 noch zwei weitere Öffnungen 12 symmetrisch zu dieser Achse liegend vorgesehen. Auch diese symmetrische Anordnung dient einer Momentenvermeidung bei einer Werkstückeinspannung in drei Bankhaken 13. Auf der Spannbacke 3 sind die Aufnahmeöffnungen 12 jeweils auf den beiden gegenüberliegenden Spannbacken-Oberflächen 15 und 16 in jeweils gleicher Verteilung angebracht, um die Spannbacken 3 in die für Links- und Rechtshänderarbeitsplätze unterschiedlichen Stellungen verdrehen und gleichermaßen nutzen zu können.In addition to the
Die jeweils einzige Doppelfunktions-Spindelmutter 7 eines Arbeitsplatzes ist in dem Kreuzungspunkt der Achsen der beiden Buchsen 6 und 6' in der Arbeitsplatte 2 angebracht.The only double-
Die Bankhaken 13 besitzen einen Klemmechanismus, um in beliebigen Höhen innerhalb der Öffnungen 12 arretierbar zu sein. Dieser Klemmechanismus ist in einer im Fuß des Bankhakens 13 den Bankhaken diametral durchstoßenden Bohrung 17 untergebracht. Er besteht dabei aus einer durch eine Schraubenfeder 18 nach radial außen über den Hakenumfang hinaus gedrückten Kugel 19, wobei die Schraubenfeder 18 sich an dem anderen Bohrungsende an einem Verschlußstück 20 abstützt. Durch eine in der Bohrung 17 vorgesehene Ringstufe kann die Kugel 19 die Bohrung 17 nicht vollständig verlassen.The bench hooks 13 have a clamping mechanism in order to be able to be locked at any height within the
Als Spannfläche für ein einzuspannendes Werkstück besitzt jeder Bankhaken 13 in seiner Kopfzone einen abgeflachten Bereich 21. Durch die zylindrische Grundform des Bankhakens 13 kann die Spannfläche jeweils auf die einzuspannende Werkstückgegenfläche flächig ausgerichtet werden. Bei der beschriebenen Bankhakenausführung und Anordnung können insbesondere runde Werkstücke und Werkstücke mit nicht planparallelen Kanten sehr gut gespannt werden.As a clamping surface for a workpiece to be clamped, each
Der abgeflachte Bereich 21 der Bankhaken 13 ist leicht gegenüber der Bankhakenachse geneigt und zwar in einer solchen Richtung, daß ein geringfügiges Verkippen des Bankhakens 13 unter Spanndruck vorgehalten wird. Auf diese Weise ist die Spannfläche des Bankhakens 13 unter Druck lotrecht zur Arbeitsplattenoberfläche ausgerichtet.The flattened
Um die Bankhaken 13 in voll in eine Öffnung 12 der Arbeitsplatte 2 eingeschobenem Zustand wieder herausziehen zu können, ist in dem abgeflachten Bereich 21 jeweils eine Ausnehmung 22 eingearbeitet. In diese kann mit einem stabförmigen an seinem eine Ende mit einem Widerhaken versehenen Greifwerkzeug 23 zum Herausziehen eingegriffen werden.In order to be able to pull the bench hooks 13 fully back into an
Auch die Füllstücke 14 sind zum gleichen Zweck des Herausnehmens an ihren beiden ebenen Stirnseiten mit Ausnehmungen zum Ansetzen des gleichen Greifwerkzeuges 23 versehen. Dieses Greifwerkzeug 23 lagert bei Nichtgebrauch in einer dafür vorgesehenen Aufnahmebohrung der Spannbacke 3.The filler pieces 14 are also provided with recesses for attaching the same gripping
Claims (12)
- Workbench in particular as a teaching aid in the form of an ergonomically designed multipurpose workbench for use in training for practical trades, having suitability for movable bench clamps, which can be removed by gripping tools from a mounting in the workbench flush with the surface, and having at least one vise which is provided at each corner of the workbench, with which a receiving plate can also be attached to the workbench, and which can be clamped by means of a clamping spindle, fixed axially therein and mounted so as to be axially displaceable in a rectangular worktop of the workbench, and by an additional guiding means against the worktop without torsion and with enforced guiding, the vise of cuboid design lying with one of its vise surfaces in the working plane of the worktop and with another rectangular surface in the plane of the worktop side plane extending perpendicular to the clamping surface and the worktop plane in the relevant corner region of the worktop, characterized in that the clamping-spindle (4) is arranged in the center point of that rectangular surface of the vise (3) serving as a clamping surface, and the worktop (2) has, in each case on both sides of the relevant worktop corner, receiving means (6, 10 and 6', 10'); aligned symmetrically to said corner for the clamping-spindle (4) and the additional guiding means (9) ot the vise (3).
- Workbench according to Claim 1, characterized in that the symmetrically aligned receiving means (6, 10 and 6', 10') ot the worktop (2) for the vise (3) are provided in the same manner at all four corners of the worktop (2).
- Workbench according to Claim 1 or 2, characterized in that, in relation to the relevant worktop corner, the additional guiding means (9) between the vise (3) and the worktop (2) lies further away from said worktop corner than the clamping-spindle (4).
- Workbench according to one of the preceding claims, characterized in that the additional guiding means (9) is a spindle which is attached rigidly to the vise (3), is axially freely displaceable in the worktop (2), and on which a spindle nut (11), which can be concealed in the clamping surface of the vise (3), can be clamped against the worktop (2) to achieve a tension balance of the vise.
- Workbench according to one of the preceding claims, characterized in that the two spindle nuts required for the clamping-spindle (4) in the two receiving means (6, 10 and 6', 10'), respectively extending symmetrically to one another over a corner of the worktop (2), are respectively combined - connected to one another firmly or movably - to form a common part (7) which fulfils the functions of both spindle nuts.
- Workbench according to one of the preceding claims, characterized in that cylindrical receiving openings (12) for bench clamps (13) are provided on the worktop (2) in all the axes of the clamping-spindles (4) provided in the worktop, said openings being respectively arranged distributed over the entire worktop length.
- Workbench according to one of the preceding claims, characterized in that the receiving openings (12) provided in the worktop (2) for bench clamps (13) respectively have the same spacing from one another in one row.
- Workbench according to one of the preceding claims, characterized in that, on two opposite surfaces (15, 16) which may come to rest in the worktop plane depending on the position of the vise (3), each vise (3) is provided with at least one receiving opening (12), lying vertically above the axis of the clamping-spindle (4), for a bench clamp (13).
- Workbench according ot Claim 8, having a plurality of receiving openings for bench clamps respectively in the relevant vise surfaces, characterized in that these openings (12) are arranged in the same distribution on each of the two opposite surfaces (15, 16).
- Workbench according to one of the preceding claims, characterized in that the bench clamps (13), preferably consisting of metal, have a cylindrical basic shape and are provided with radially acting spring means for clamping them in at any desired heights of the receiving openings (12).
- Workbench with bench clamps according to Claim 10, characterized in that the spring means are respectively accommodated in a bore (17) penetrating the bench clamps (13) diametrically and comprise a ball (19) which protrudes radially out of the bore (17) under the pressure of a helical spring (18), the ball (19) resting against an annular step within the bench-clamp bore, and the helical spring (18) being supported on a closure piece (20) of the bench-clamp bore at the other end thereof.
- Workbench according to Claim 11, characterized in that the bench clamps (13) have, at their one end respectively which protrudes out of the worktop (2) when a workpiece is being clamped, a flattened peripheral region (21) which extends over that heigt with wich the bench clamps (13) can protrude to a maximum extent out of the worktop (2) whilst still maintaining a sufficient bearing in the receiving opening (12) of said worktop (2) under maximum load-bearing capacity.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4311965A DE4311965A1 (en) | 1993-04-10 | 1993-04-10 | Workbench, especially as a teaching aid in the form of an ergonomically designed multi-purpose workbench |
| DE4311965 | 1993-04-10 | ||
| PCT/DE1994/000377 WO1994023908A1 (en) | 1993-04-10 | 1994-03-31 | Workbench, especially a teaching aid in the form of an ergonomically designed multi-purpose workbench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0693019A1 EP0693019A1 (en) | 1996-01-24 |
| EP0693019B1 true EP0693019B1 (en) | 1996-10-30 |
Family
ID=6485323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94911101A Expired - Lifetime EP0693019B1 (en) | 1993-04-10 | 1994-03-31 | Workbench, especially a teaching aid in the form of an ergonomically designed multi-purpose workbench |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5709256A (en) |
| EP (1) | EP0693019B1 (en) |
| JP (1) | JPH08511475A (en) |
| AT (1) | ATE144737T1 (en) |
| CA (1) | CA2160254C (en) |
| DE (2) | DE4311965A1 (en) |
| DK (1) | DK0693019T3 (en) |
| WO (1) | WO1994023908A1 (en) |
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| US5765273A (en) * | 1995-09-22 | 1998-06-16 | Black & Decker Inc. | Drill press having pivotable table |
| CO4600690A1 (en) * | 1997-10-08 | 1998-05-08 | Valenzuela Carlos Martin Uribe | BOARD FOR A TABLE TO PROVIDE THE CONVENTIONAL SERVICES AND THOSE OF A DIY BANK |
| DE19744624A1 (en) * | 1997-10-09 | 1999-04-15 | Joerg R Bauer | Work-station for work-holding frame-guided drive bar |
| US6412764B1 (en) * | 2000-08-30 | 2002-07-02 | Ajh Enterprises | Portable pipe fitting table |
| US20050279576A1 (en) * | 2004-06-21 | 2005-12-22 | Luc Robichaud | Workbench with removable tool support |
| DK1902814T3 (en) * | 2006-09-20 | 2009-04-14 | Konstruktionsbuero Wuethrich | Building kit with at least one plate |
| WO2008094336A1 (en) * | 2007-01-31 | 2008-08-07 | Rowley Donald A | System for clamping an object to a railing and a table using the system |
| US8011399B2 (en) * | 2007-05-11 | 2011-09-06 | Lee-Cheng Chang | Woodworking bench |
| IT1395501B1 (en) * | 2009-05-15 | 2012-09-28 | Balestrini Renzo Spa | DOUBLE FUNCTION SUPPORT FOR WORKING PIECE LOCKING |
| CA2748513C (en) * | 2010-08-06 | 2020-05-05 | Sam Koffski | Portable expandable workbench |
| DK177186B1 (en) * | 2010-09-23 | 2012-05-21 | Lasse Friis | Expandable workbench and a method of use |
| CN106671036A (en) * | 2017-02-20 | 2017-05-17 | 京东方科技集团股份有限公司 | Bearing platform |
| CN112454282A (en) * | 2020-11-13 | 2021-03-09 | 大唐灌云光伏发电有限公司 | Photovoltaic module wiring device for photovoltaic power generation |
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| DE442519C (en) * | 1927-04-02 | Branscheid & Frings | Woodworking device | |
| US537338A (en) * | 1895-04-09 | Carpenter s bench | ||
| DE192703C (en) * | ||||
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| GB210534A (en) * | 1922-11-02 | 1924-02-04 | Charles Welsh | Improvements in and relating to carpenters' and woodworkers' benches |
| US1508979A (en) * | 1923-05-11 | 1924-09-16 | Keller Peter | Carpenter's table |
| CH114327A (en) * | 1925-05-12 | 1926-03-16 | Ernst Quidort | Clamping device on workbenches. |
| US1596169A (en) * | 1926-02-20 | 1926-08-17 | Follmer Joseph | Bench vise |
| CH144071A (en) * | 1930-03-10 | 1930-12-15 | C Rueetschi | Equipment on workbenches with French front pliers. |
| US2437351A (en) * | 1946-04-30 | 1948-03-09 | Joseph A Follmer | Quick adjustable bench vise |
| US2587177A (en) * | 1947-06-10 | 1952-02-26 | Charles O Larson | Folding workbench |
| DE1910946A1 (en) * | 1969-03-04 | 1970-09-10 | Siegfried Mahl | Workbench for construction, assembly and DIY work |
| US4375827A (en) * | 1980-12-03 | 1983-03-08 | Ranko Ignjatic | Workbench table top clamping device |
| DE8106245U1 (en) * | 1981-03-02 | 1981-11-26 | Berliner Zentralausschuß für soziale Aufgaben e.V., 1000 Berlin | WORKBENCH OR THE LIKE WORK AND / OR LEISURE FURNITURE ADOPTED BY A BASE |
| AU1598383A (en) * | 1982-06-25 | 1984-01-05 | Hilton (Products) Ltd. | Workbench with adjustable vice |
| GB2228705B (en) * | 1989-02-24 | 1993-09-22 | Harold Wilfred Gates | Bench clamp |
| US5186228A (en) * | 1991-02-08 | 1993-02-16 | Stafford Donald C | Workbench and mountable implements |
| US5553838A (en) * | 1992-01-03 | 1996-09-10 | Lee Valley Tools Ltd. | Clamping bench dog |
-
1993
- 1993-04-10 DE DE4311965A patent/DE4311965A1/en not_active Withdrawn
-
1994
- 1994-03-31 EP EP94911101A patent/EP0693019B1/en not_active Expired - Lifetime
- 1994-03-31 DK DK94911101.7T patent/DK0693019T3/en active
- 1994-03-31 DE DE59400953T patent/DE59400953D1/en not_active Expired - Lifetime
- 1994-03-31 AT AT94911101T patent/ATE144737T1/en not_active IP Right Cessation
- 1994-03-31 JP JP6522609A patent/JPH08511475A/en active Pending
- 1994-03-31 US US08/535,274 patent/US5709256A/en not_active Expired - Lifetime
- 1994-03-31 WO PCT/DE1994/000377 patent/WO1994023908A1/en active IP Right Grant
- 1994-03-31 CA CA002160254A patent/CA2160254C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| WO1994023908A1 (en) | 1994-10-27 |
| ATE144737T1 (en) | 1996-11-15 |
| CA2160254A1 (en) | 1994-10-27 |
| JPH08511475A (en) | 1996-12-03 |
| DE4311965A1 (en) | 1994-10-13 |
| CA2160254C (en) | 1998-09-22 |
| US5709256A (en) | 1998-01-20 |
| DK0693019T3 (en) | 1997-04-14 |
| EP0693019A1 (en) | 1996-01-24 |
| DE59400953D1 (en) | 1996-12-05 |
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