EP2700479B1 - Frame assembly for a work table, and modular work table with such a frame assembly - Google Patents

Description

The invention relates to a frame component according to the preamble of claim 1 and claim 2 and a modular work table formed therewith according to the preamble of claim 10.

In the metalworking, and in particular for the welding of workpieces, the use of work tables or clamping devices is known which provide a table surface for laying or fastening of the workpieces. Such work tables can have a solid table surface whose dimensions are each adapted to the workpieces to be machined. A massive table surface has the disadvantage that a conversion of the table or an adaptation to workpieces with different dimensions is not or only at great expense, namely by replacing the table top is possible. US 2007/0113928 A1 shows a conventional work table according to the preamble of claim 10, the frame members according to the preamble of claim 1 and claim 2.

DE 86 01 928 U1 shows a so-called turning table on which plastic profiles, such as window frames or door frames, can be placed and processed. In detail, a table plane of this turning table is formed by a plurality of strips, which can be arranged in parallel or else in the manner of a grid. The individual strips of the turning table consist of a strip holder, which is designed as a C-shaped sheet metal profile. In the strip holder a plastic body is inserted, which carries a plurality of rows of bristles, each projecting vertically upwards. The free ends of the bristles are all in one plane, thereby defining a support or table level of this turning table. The bristles have sufficient rigidity to define a horizontal support plane for plastic products. If contamination of such plastic products z. B. in the form of weld beads or the like, the bristles are locally bent in the region of these contaminants, so that damage to an adjacent surface of the plastic product is prevented. However, a disadvantage of the above-described turning table is that that the bristles, which are usually made of plastic, when applying products with very high weight have no sufficient buckling resistance, so that as a result, no exact support level can be defined by these bristles.

For example, in the prior art DE 200 12 985 U1 and DE 202 11 892 U1 each work tables for clamping workpieces known whose table surface can be changed in their dimensions. For this purpose, at least one crimping component in the form of a supporting spar or carrier is provided which is displaceable horizontally and relative to an adjacent frame component. By this horizontal displacement, the dimension of a table surface, which is formed by these two frame members, can be changed in their dimensions. However, such conventional worktables are subject to the disadvantage that the surface of the support beams or support, with which the workpieces come into contact, can be soiled by welding beads or the like or damaged by impacts or the like. For this case, a precise clamping of workpieces and a corresponding adjustment on the work table is not guaranteed. If the surface of a slidable frame member should be soiled or damaged, complete replacement of this component is cumbersome and expensive.

Accordingly, the invention has for its object to provide a work table and a frame member for such a work table, can be eliminated with the dirt and / or damage to the support surface for the workpieces inexpensively and quickly.

This object is achieved by a frame member having the features of claim 1 and claim 2, and by a modular work table having the features of claim 10. Advantageous developments of the invention are defined in the dependent claims.

A frame component according to the invention is suitable for use for a work table in order, together with at least one further frame component to form or define its table surface. The frame component according to the invention has a longitudinal extension and comprises a carrier element and a contact element, wherein the contact element is attached to the upper side of the carrier element and thereby forms a bearing surface for a workpiece. Here, the contact element is solid with a rectangular cross-section, so that it is also suitable for supporting workpieces with high weight.

In an alternative embodiment of the frame component according to the invention, the contact element has a polygonal cross section. In this case, the contact element can optionally be fastened with at least two different side surfaces on the carrier element. According to yet another alternative, the contact element may have an at least partially rounded cross-section, by means of which a line contact is formed when a workpiece is placed. In this case, the contact element in the region of its surface, on which a workpiece is placed, corresponding rounded or completely round, as a round profile, be formed. Regardless of the configuration with polygonal or rounded cross-section, the contact element may be either solid in cross-section or have a central recess.

For the purposes of the present invention, the term "solid contact element" is to be understood as meaning that the contact element in cross section is either designed as a solid body or, preferably along its longitudinal axis, can have a hole or a recess. In the latter case, the contact element may be formed with respect to its cross section, for example in the form of a rectangle or a ring, with a central recess. Essential for the contact element in the sense of the feature "solid" or in view of its cross-section is that its outer surfaces are sufficiently stable with a correspondingly high structural rigidity, so that the outer surfaces do not deform when a heavy workpiece or a large load and insofar form a stable and non-deformable bearing surface.

An essential aspect of the present invention is formed by the modular construction of the crimping component, namely in that at least one contact element can be mounted on the upper side of a carrier element and is exchangeable. As a result, the bearing surface for a workpiece is not formed by the carrier element, but by an upper side of the at least one contact element. If the contact surface of this contact element is dirty or damaged, so alone the contact element can be exchanged inexpensively and with little effort, the frame member itself does not need to be replaced.

For the purposes of the present invention, exchanging the contact element means that the contact element is replaced either as a whole and replaced by a new contact element, or that the same contact element is attached to the carrier element again after release from the carrier element, namely, that another side surface of this contact element, which is not dirty or damaged, forms the resulting bearing surface for a workpiece.

Conveniently, the replaceable contact element along the support member may be mounted in segments. This means that along the carrier element a plurality of individual contact elements can be provided, which together form a bearing surface for a workpiece. If there should be damage / contamination of a contact element in a specific region of the frame component, then a single contact element in the corresponding region of the frame component can be exchanged, wherein the contact elements adjacent thereto and not damaged or not contaminated can be left on the carrier element.

The attachment of a contact element at the top of the frame member can be done by screwing. Per screw in the contact element, a through hole and in the top of the support member is provided a corresponding thread for a screw, or vice versa. Conveniently, the head of a screw in the through hole of the Contact element arranged sunk so that does not protrude at the top of the contact element or the support surface for a workpiece. Additionally or alternatively, a fastening of a contact element on the upper side of the carrier element can also take place by gluing, wherein this gluing point can be detached by applying a predetermined force.

In an advantageous embodiment of the invention may be provided on the upper side of the support member means with which the contact element can be arranged on the upper side of the support member in a predetermined position, namely expediently by positive engagement. These means may be formed either as a web or as a groove, which is formed on the upper side of the carrier element and forms a contact surface for an end face or a side surface of the contact element. When forming this means as a web, the contact element can be fixed by a contact with this web in position on the support element with little effort and quickly.

As just explained, the means for determining the position of the contact element on the upper side of the carrier element can also be designed in the form of a groove whose contour is adapted to a cross section of the contact element. In other words, the width of the groove substantially corresponds to a width of the contact element. When mounted contact element engages a side surface thereof in the groove, whereby a predetermined positioning of the contact element on the upper side of the support member is facilitated or improved, at least in a shorter time is possible. The contact of the side surfaces of the contact element with the vertical walls of the groove corresponds to a positive connection, by means of which the position of the contact element on the upper side of the carrier element can be tightened with little effort.

In an advantageous embodiment of the invention, the side surfaces, with which the contact element can be fastened on the carrier element in each case, can be parallel to one another and opposite to one another. As a result, the contact element has a rectangular cross-section, so that it optionally has at least two different side surfaces can be mounted on the top of the support element. These side surfaces of the contact element are opposite to each other. With a square cross-section of the contact element, it can optionally be attached to one of its four side surfaces on the upper side of the carrier element. The optional attachment of the contact element with a certain side surface at the top of the support member has the advantage that in case of damage or contamination on a side surface of the contact element this component itself does not need to be replaced, this is due to the fact that the contact element then to his Longitudinal axis "rotated" and then re-attached to the top of the support member, so that a side surface of the contact element, which is not damaged or not dirty, is located at the top and thus serves as a new support surface for a workpiece.

In an advantageous embodiment of the invention, the contact element may be mounted on the top of the support member such that at least on a side edge of the top of the support member and adjacent to the contact element, a defined contact area is formed for at least one additional frame member. A modular worktable consists in the simplest case of a total of two frame members, which together define a virtual table surface with their respective longitudinal extent. Said abutment region on the side edge of the carrier element facilitates the assembly of an additional frame component, preferably in a direction transverse to the longitudinal extension of the original two frame components. Conveniently, in this case the virtual table surface of a modular work table is formed, for example, a total of four frame members, wherein two frame members are mounted in each case in a direction transverse to the longitudinal extension of the two other frame members, so that a total of a quadrangle is formed by the frame members.

When machining very long workpieces, it is advantageous that a plurality of frame members are arranged parallel and spaced from each other. If in these frame members, a contact element respectively in the middle of the Top side of the support member, based on its width, is arranged, formed on the upper side of the support member on both sides of the contact element respectively defined contact areas, which are suitable for mounting for at least one additional frame member. Accordingly, it is possible to mount on a frame component according to the invention in a direction transverse to its longitudinal extension in each case an additional frame member which rests with its free ends on the defined contact areas. As a result, a modular work table can be formed, the total length of which can be arbitrarily adapted to a corresponding length of a workpiece.

In an advantageous embodiment of the invention, a contact element has a longitudinal extent and is mounted with its longitudinal axis substantially parallel to the longitudinal axis of the carrier element on its upper side. As explained, this attachment of the contact element on the upper side of the carrier element can take place essentially in its middle, so that defined contact areas for additional frame components are formed on both sides adjacent to the contact element. In this case, the length of a contact element can either correspond substantially to a length of the carrier element, or be shorter than the carrier element, wherein then along the carrier element a plurality of adjacent contact elements are provided. In the latter case, the support surface for a workpiece is formed by a plurality of contact elements, as explained, a segment-wise replacement or rotation of a contact element in the event of contamination or damage is possible. For example, the length of a contact element may be less than 100 cm, preferably less than 50 cm, and more preferably less than 25 cm.

A contact element is preferably made of steel. The advantage here is when the contact element is cured, so that its surface is less susceptible to mechanical damage. A hardening of the contact element is in particular cheaper to produce, if its overall dimensions are compact, ie when a longitudinal extension of the contact element is smaller than the longitudinal extent of a support element.

As an alternative to steel, the contact element can also be made of "softer" materials, for example of copper, aluminum, plastic or wood. Such softer materials offer the advantage that workpieces Aufbzw. Depositing on the contact element against the formation of scratches or the like are protected on its surface. In addition, the said alternative materials are cheaper than steel, especially in the case of plastic or wood. If the contact element is made of plastic, this plastic can expediently either consist entirely of PTFE or have areas of PTFE on its surface, so that an easy displacement of workpieces on the contact element made of plastic is possible.

An optimization of the contact element for practical use, in particular for carrying out welding work, can additionally or alternatively be achieved by providing the side surfaces of the contact element, which optionally form the bearing surface for a workpiece, with a coating, e.g. An adhesion of welding beads difficult or prevented. Furthermore, such a coating can have a low sliding coefficient, so that a workpiece which rests on the contact element can be displaced thereon with little effort and in particular without damaging its surface. Such a coating can be formed using the plastic PTFE.

In certain operations, it may happen that a workpiece is always stored or applied to the carrier element in the same place. If a plurality of contact elements are provided on a carrier element, the contact element which is located on the carrier element at the point of application of the workpiece can be made of a "soft" material as explained above, in particular of plastic or wood. As a result, damage to the workpiece can be prevented. neighboring Contact elements, which adjoin the said workpiece of soft material, may be made of steel, for example.

According to a further advantageous embodiment of the invention, the contact element may also be made of stainless steel. This allows the processing of workpieces made of stainless steel, which then comes to a contact of stainless steel to stainless steel when placing these workpieces on the Kontaktelemen only. If the carrier element is made of conventional steel, it is expedient to provide a coating on the contact surface of the stainless steel contact element with the carrier element, which prevents direct contact of the stainless steel with the steel of the carrier element in order not to impair the quality of the stainless steel.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

The invention is illustrated schematically below with reference to preferred embodiments in the drawing and will be described in detail with reference to the drawings.

Figur 1

eine Stirnseitenansicht eines erfindungsgemäßen Rahmenbauteils,

Figur 2

eine Stirnseitenansicht des Rahmenbauteils von Fig. 1, wenn ein Kontaktelement von dem zugehörigen Trägerelement demontiert ist,

Figur 3

eine Perspektivansicht des Rahmenbauteils von Figur 1,

Figur 3a-3d

vereinfachte Querschnittsansichten von weiteren Ausführungsformen eines Kontaktelements, zur Montage an einem Rahmenbauteil von Fig. 1 bzw. 2,

Figur 4

eine Stirnseitenansicht eines Beinelements für einen Arbeitstisch, an dessen oberen Ende ein Rahmenbauteil gemäß Fig. 1 vorgesehen ist,

Figur 5

eine Stirnseitenansicht eines erfindungsgemäßen Arbeitstisches, der aus zwei nebeneinander angeordneten Beinelementen gemäß Figur 4 besteht, die gemeinsam eine virtuelle Tischfläche E bilden,

Figur 6

eine Seitenansicht des Beinelements von Figur 4,

Figur 7

eine Perspektivansicht des erfindungsgemäßen Arbeitstisches von Figur 6, in Verbindung mit einem darauf aufgelegten Werkstück,

Figur 8

eine Perspektivansicht eines zusätzlichen Rahmenbauteils in Form einer Distanzbrücke,

Figur 9

eine Perspektivansicht einer weiteren Ausführungsform einer Distanzbrücke, die als erfindungsgemäßes Rahmenbauteil ausgebildet ist,

Figur 10

eine Perspektivansicht eines erfindungsgemäßen Arbeitstisches, der aus zwei Beinelementen gemäß Figur 4 und zwei Distanzbrücken gemäß Figur 9 gebildet wird,

Figur 11

eine Stirnseitenansicht des Arbeitstisches von Figur 10,

Figur 12

eine vergrößerte Darstellung des Bereichs I von Figur 11,

Figur 13

eine Perspektivansicht einer weiteren Ausführungsform eines erfindungsgemäßen Arbeitstisches, bei dem zwischen zwei Beinelementen insgesamt drei Distanzbrücken vorgesehen sind,

Figur 14

eine weitere Ausführungsform eines erfindungsgemäßen Arbeitstisches, bei dem zwischen zwei Beinelementen insgesamt fünf Distanzbrücken vorgesehen sind,

Figur 15

eine weitere Ausführungsform eines erfindungsgemäßen Arbeitstisches, bei dem insgesamt drei parallel zueinander angeordnete Beinelemente vorgesehen sind, an deren oberen Enden jeweils ein erfindungsgemäßes Rahmenbauteil gemäß Figur 1 angebracht ist, die gemeinsam eine virtuelle Tischfläche E bilden,

Figur 16

eine vergrößerte Darstellung des Bereichs II von Figur 15, wenn an das mittige Rahmenbauteil seitlich angrenzend daran jeweils zusätzliche Rahmenbauteile in einer Richtung quer dazu angebracht sind,

Figur 17

eine Stirnseitenansicht einer weiteren Ausführungsform eines Rahmenbauteils,

Figur 18

eine Draufsicht auf ein erfindungsgemäßes Rahmenbauteil nach einer weiteren Ausführungsform,

Figur 19

eine Draufsicht auf ein erfindungsgemäßes Rahmenbauteil nach einer weiteren Ausführungsform,

Fig. 20

eine Perspektivansicht eines erfindungsgemäßen Rahmenbauteils nach einer weiteren Ausführungsform,

Fig. 21

eine Perspektivansicht eines Beinelements zur Montage mit einem Rahmenbauteil gemäß Fig. 20,

Fig. 22

eine Perspektivansicht des Rahmenbauteils gemäß Fig. 20, das auf einem Beinelement gemäß Fig. 21 montiert ist,

Fig. 23

eine Stirnseitenansicht eines Beinelements für einen Arbeitstisch, an dessen oberen Ende ein erfindungsgemäßes Rahmenbauteil nach einer weiteren Ausführungsform montiert ist, und

Fig. 24, 25

jeweils Stirnseitenansichten des Rahmenbauteils gemäß Fig. 23, das in verschiedenen Positionen an dem Beinelement festgelegt ist.

Show it:

FIG. 1

an end view of a frame member according to the invention,

FIG. 2

an end view of the frame member of Fig. 1 if a contact element is removed from the associated carrier element,

FIG. 3

a perspective view of the frame member of FIG. 1 .

Figure 3a-3d

simplified cross-sectional views of further embodiments of a contact element, for mounting to a frame member of Fig. 1 or 2,

FIG. 4

an end view of a leg member for a work table, at its upper end a frame member according to Fig. 1 is provided,

FIG. 5

an end view of a work table according to the invention, consisting of two juxtaposed leg elements according to FIG. 4 which together form a virtual table surface E,

FIG. 6

a side view of the leg member of FIG. 4 .

FIG. 7

a perspective view of the work table according to the invention of FIG. 6 , in connection with a workpiece placed thereon,

FIG. 8

a perspective view of an additional frame member in the form of a spacer bridge,

FIG. 9

a perspective view of another embodiment of a spacer bridge, which is designed as a frame member according to the invention,

FIG. 10

a perspective view of a work table according to the invention, which consists of two leg members according to FIG. 4 and two spacer bridges according to FIG. 9 is formed,

FIG. 11

an end view of the worktable of FIG. 10 .

FIG. 12

an enlarged view of the area I of FIG. 11 .

FIG. 13

a perspective view of another embodiment of a work table according to the invention, in which a total of three spacer bridges are provided between two leg members,

FIG. 14

a further embodiment of a work table according to the invention, in which a total of five spacer bridges are provided between two leg elements,

FIG. 15

a further embodiment of a work table according to the invention, in which a total of three parallel arranged leg members are provided at the upper ends of each according to the invention a frame member FIG. 1 is attached, which together form a virtual table surface E,

FIG. 16

an enlarged view of the area II of FIG. 15 when attached to the central frame member laterally adjacent thereto respectively additional frame members are mounted in a direction across it,

FIG. 17

an end view of another embodiment of a frame member,

FIG. 18

a plan view of an inventive frame member according to a further embodiment,

FIG. 19

a plan view of an inventive frame member according to a further embodiment,

Fig. 20

a perspective view of a frame member according to the invention according to a further embodiment,

Fig. 21

a perspective view of a leg member for mounting with a frame member according to Fig. 20 .

Fig. 22

a perspective view of the frame member according to Fig. 20 acting on a leg element according to Fig. 21 is mounted,

Fig. 23

an end view of a leg member for a work table, at the upper end of a frame member according to the invention is mounted according to a further embodiment, and

Fig. 24, 25

respectively front side views of the frame member according to Fig. 23 which is fixed in various positions on the leg element.

According to the invention, a frame component in conjunction with at least one further frame component is suitable for forming a table surface for a work table which does not consist of a solid plate but of a virtual plane. In this context, the feature frame member is to be understood as meaning that a side edge is formed for said virtual table surface.

The Figures 1-3 show in principle a simplified frame member according to the invention and its individual parts.

Fig. 1 shows a prizipiell simplified end view of a frame member 1. The frame member 1 is formed of a support member 2, on the upper side 2a, a contact element 3 is attached. The contact element 3 forms on its upper side a support surface 5, on which a workpiece 4 (see. Fig. 7 ) can be launched. The contact element 3 is rectangular, with its side surface 3a is located at the top and thus forms the support surface 5. The opposite side surface 3b of the contact element 3 is mounted on the carrier element 2.

The Fig. 2 shows an end view of the frame member 1 of Fig. 1 when the contact element 3 is not yet mounted on the support element 2. It can be seen that a groove 6 is formed on the upper side 2a of the carrier element 2. This groove 6 allows a simplified mounting of the contact element 3 on the upper side 2 a of the support element 2, namely in the direction of in the Fig. 2 shown arrow. The width of the groove 6 is substantially adapted to an edge length of the contact element 3. When the contact element 3 is mounted on the upper side 2 of the frame component 1, the lower side surface 3b of the contact element engages completely in the groove 6.

The Fig. 3 shows a perspective view of the frame member 1 of Fig. 1 , Fig. 3 illustrates that the frame member 1 has a longitudinal extent. Along the top 2a of the support member 2, a plurality of contact elements 3 are arranged. These contact elements 3 are also elongated and mounted with their longitudinal axis parallel to the longitudinal axis of the support member 2 on the upper side 2a. In the bearing surface 5 of the contact element 3, the countersunk holes denoted by "8" are formed, each of which adjoins (not shown) through holes in the contact elements 3. By the countersunk holes 8 it is ensured that a screw head of the screw 7 is sunk in the contact element 3 can be received and does not protrude from the support surface 5. Accordingly, a workpiece, when it is placed on the support surface 5, not touched or damaged by the screw head.

As already explained above, the contact element 3 is rectangular, wherein as shown in the Fig. 1 or 2 its side surface 3a forms the bearing surface 5 and its side surface 2b is in contact with the carrier element 2. It is understood that the contact element 3 can also be rotated by 180 ° about its longitudinal axis mounted on the support element 2, so that then the side surface 3a of the contact element 3 in contact with the top 2a of the support member 2, and accordingly the side surface 3b of Contact element 3 forms the support surface 5 for a workpiece.

The Fig. 3a to 3d show in cross-section further possible embodiments of the contact element 3, which can also be attached to the carrier element 3. The contact element 3 can according to Fig. 3a have a polygonal cross-section, for example in the form of a hexagon. The polygonal cross section may alternatively also be in the form of a triangle (not shown) or a rectangle (cf. Fig. 1, Fig. 2 ) be formed. According to Fig. 3b For example, the contact element 3 may have a rounded portion on its upper side. In modification to Fig. 3b the contact element 3 in cross section may also be completely formed as a round profile, either solid or in the form of a ring with a central recess along its longitudinal axis.

For the purposes of the present invention, it is understood that the polygonate cross-section of the contact element 3 can also be designed in the form of a U-profile. Such a contact element 3 can on the top 2a of the support member 3 either with its end face ( Fig. 3c ) or with its free thighs ( Fig. 3d ) be attached or attached. Alternatively, the contact element 3 in the form of the U-profile, starting from the illustration according to Fig. 3c Also be rotated by 90 ° on the top 2a of the support member 3 may be mounted so that one of the legs rests flat on the top 2a. The design of the contact element 3 in the form of the U-profile has the advantage of high availability on the market and a low-cost procurement.

Fig. 4 shows an end view of a leg member 9, at the top of a frame member 1 according to Fig. 1 is appropriate. Here is the frame member 1 formed as a T-beam, the upper T-leg, the support member 2 in correspondence to Fig. 1 forms. As explained, the contact element 3 is attached to the upper side 2 a of the T-carrier, namely in such a way that it is aligned or aligned with a central web 2 b of the T-carrier in the form of the carrier element 2. This is particularly advantageous when placing workpieces with high weight forces, so that these forces can be derived by the central web 2b in the leg member 9, without causing a torsion in the support member 2 with respect to its longitudinal axis.

The leg member 9 has on its underside a foot plate 9a, which is adjustable in height.

The Fig. 5 to 7 each show a work table 10, the two leg elements 9 according to Fig. 4 is constructed. Details of this worktable 10 will be explained in detail below.

Fig. 5 shows an end view of the work table 10 and its leg members 9. The two leg members 9 are connected to each other by a support bracket 11 and positioned to each other that the frame members 1, which are respectively provided at the upper end of the leg member 9, are arranged parallel to each other. The Fig. 6 shows a side view of the work table 10, namely from the direction of the arrow B of Fig. 5 , The Fig. 7 shows a perspective view of the work table 10 of Fig. 5 or 6, wherein here again the parallel arrangement of the frame members 1 to each other is recognizable.

Fig. 5 illustrates that between the bearing surfaces 5 of the contact elements 3, a plane E is formed. The feet 9a of the leg members 9 are adjusted so that the plane E is exactly horizontal. The plane E forms a virtual table surface for the work table 10. This means that 10 workpieces can be placed on the work table whose width is greater than the distance between the two leg members 9 to each other. In the perspective view of Fig. 7 For example, a workpiece 4 is shown on the Worktable 10 is placed and is in contact with the respective bearing surfaces 5 of the contact elements 3.

The side view according to Fig. 6 illustrates that along the frame member 1 at the top 2 a plurality of contact elements 3 are provided, namely in this example a total of six contact elements 3. Regarding the view of Fig. 6 These six contact elements are numbered from 1 to 6, and designated accordingly with 3.1 - 3.6. With regard to these contact elements 3.1 - 3.6, it is understood that these in each case according to the representation of Fig. 1 to 3 are formed and bolted by a suitable screw 7 with the frame member 1. The side view of Fig. 6 illustrates that the contact elements 3.1 - 3.6 together form a continuous support surface 5.

The provision of a plurality of contact elements 3 on the upper side 2 of the frame component 1 has the advantage that in the event of possible damage or soiling of a specific contact element 3, only this particular contact element 3 is to be exchanged, with adjacent contact elements which do not become dirty or damaged are not needed to be exchanged. This is based on the in Fig. 7 shown workpiece 4 explained in detail. As shown, the workpiece 4 is located on the support surface 5 of the contact elements 3.2 and 3.3 (in Fig. 7 covered). For example, during machining of the workpiece 4, the contact surfaces 5 of the contact elements 3.2 and 3.3 are damaged. For this case, it is either possible to replace the contact elements 3.2 and 3.3 by new contact elements. Alternatively, it is also possible to fix the contact elements 3.2 and 3.3 after loosening the screw 7 rotated by 180 ° again on the top 2 of the frame member 1, in which case the side surfaces 3b of the respective contact elements 3 (see. Fig. 1 and 2 ) form the upper bearing surfaces 5. In any case, a replacement of the contact elements 3.1 and 3.4 - 3.6, in the example of Fig. 7 not damaged, not required. This leads advantageously to low overall costs of the work table 10 and to short conversion or repair times. The mentioned low costs are also justified by that explained as the possibility exists, a contact element in the event of dirt or damage initially rotated by 180 ° to mount before any complete replacement of this contact element is made.

Regarding the presentation of Fig. 7 It is understood that a plurality of contact elements 3 can be attached to the carrier element 2 of the frame component 1 shown in the image on the right-in the same way as on the frame component 1 shown on the left-hand side, which can be individually turned or replaced in the event of contamination or damage , Alternatively, it is also possible that the contact element 3, which is fastened on the carrier element 2 of an associated frame component 1, is produced in one piece from a continuous web whose length substantially coincides with the carrier element 2. This is advantageous for the mounting of the contact element 3 on the carrier element 2.

With regard to a workpiece 4, as in Fig. 7 can be placed on the work table 10, it is understood that a distance between the two leg members 9 is mutually variable by different lengths of support beams 11 are used to connect the leg members 9 together. Here, the distance between the two leg members 9 is adapted to each other in each case to a total length of a workpiece 4 to be machined. Starting from the in Fig. 7 workpiece 4 illustrated by way of example understood that by reducing the distance between the two leg members 9 to each other and workpieces with a shorter overall length can be placed on the work table 10.

The representations of the Fig. 5 and 7 illustrate that the virtual table surface of the worktable formed by the plane E is not massive. This has the advantage that a worker can enter from an open end of the work table 10 "in the table surface" to edit the workpiece without a large distance to can. This is at the in Fig. 7 exemplified workpiece 4 with respect to the area F illustrates the center of located in this workpiece 4 and in Fig. 7 hatched. By a worker "enters the table" into it, a machining of the area F of the workpiece 4 can be made without spatial restriction. In this regard, the use of the work table 10 according to the invention over a conventional work table with a solid table surface is advantageous.

The 8 and 9 each show perspective views of additional frame members in the form of so-called distance bridges. At the free ends of these spacer bridges each support webs 12 are formed. The function of this support webs 12 is explained below in detail.

At the in Fig. 9 shown spacer bridge is an inventive frame member 1, in which an elongated lower support forms the support member 2, on the upper side 2a a replaceable contact element 3 is arranged and can be attached, for example by a suitable screw. This in Fig. 9 Alternatively, this contact element 3 can also be designed in the manner of a segment, so that a plurality of contact elements are arranged along the longitudinal extension of the carrier element 2. Regarding the design and the attachment of the contact element 3 in the in Fig. 9 shown frame member 1 is to avoid repetition of the basic explanation in the Fig. 1 to 3 directed.

Due to the arrangement of the contact element 3 on the upper side 2 of the support element 2 (see. Fig. 1 . Fig. 3 ) is ensured that laterally adjacent to the contact element 3 and on a side edge 2r of the support member 2, a defined contact region 13 is formed, which serves for an additional frame member. This abutment region 13 is formed by the horizontal part 13a of the upper side 2a of the carrier element 2, and by the vertical part 13b of a side surface of the contact element 3. Due to the central arrangement of the Contact element 3 on the top 2a of the support member 2, the defined contact areas 13 are formed on both sides of the contact element 3.

The 10 to 14 show a further embodiment of the work table 10 according to the invention.

The perspective view according to Fig. 10 illustrates that a work table 10, the embodiment of Fig. 7 corresponds, in addition, with two other frame members in the form of the distance bridges according to Fig. 8 or according to Fig. 9 is provided, which are each placed on a side edge of the arranged on the leg members 9 frame members 1. Here, the support webs 12 of the spacer bridges in contact with the contact areas 13 of the support elements of the adjacent frame members 1. The additional two spacer bridges 1, as in Fig. 10 shown between the two arranged on the leg elements 9 frame members 1 are formed with its top also the virtual plane E from. Thus, the virtual table surface E is defined by a frame formed of the four frame members 1.

The presentation of the Fig. 11 corresponds to an end view of the worktable of Fig. 10 , where the Fig. 12 an enlarged view of the area I of Fig. 11 is. It can be seen here that the support web 12 of the spacer bridge 1 is in contact with the abutment region 13, so that an accurate and time-saving positioning of the spacer bridge 1 with respect to the abutment region 13 is thereby possible. The two distance bridges 1, as in Fig. 10 shown are additionally provided between the two leg members 9, also form with its top of the virtual plane E from. In other words, these additional spacer bridges or frame members are aligned with their upper side at the same height as the support surface 5, which are fixed to the frame members 1 according to the invention (see. Fig. 12 ).

In the Fig. 12 shown distance bridge (pictured left) represents an inventive frame member 1 according to Fig. 9 is on the top also a Contact element 3 is attached. The support web 12 of the frame member 1 in the form of the spacer bridge is dimensioned so that its contact element 3 is located at exactly the same height as the contact element 3, which is mounted on the frame member 1 above the leg member 9. As a result, a continuous support surface or a common virtual table surface E is defined by all contact elements.

The perspective views according to the Fig. 13 and 14 show further examples of a work table 10, in which between the two leg members 9 a total of three spacer bridges ( Fig. 13 ) or a total of five spacer bridges ( Fig. 14 ) are arranged. These spacer bridges may be a frame component 1 according to the invention as shown in FIG Fig. 9 act. The orientation of the top of these spacer bridges with respect to an adjacent frame member 1, which is mounted on a leg member 9, corresponds in each case to the representation of Fig. 12 ,

The positioning of a spacer bridge or an additional frame component 1 with respect to an adjacent thereto frame member which is mounted on a leg member 9 can be adjusted by the support web 12 of the spacer bridge (see. Fig. 8, Fig. 9 ) has a through hole, wherein the abutment portion 13a on the upper side 2a of the support member 2 (see. Fig. 1 ) either also has a through hole or a threaded blind hole. Thus, the support web 12 of the spacer bridge with the contact area 13a of the support member 2 can be screwed suitable. Along the carrier element 2, a plurality of through-holes or threaded blind holes may be provided, so that the spacer bridge can be positioned or fixed in dependence on a spacing of these holes with respect to the frame component 1 adjacent thereto.

In modification to the representation in the Fig. 10 . 13 and 14 It is understood that between the frame members 1, which are mounted on the leg members 9, also any other number of additional spacer bridges in Form of other frame components may be provided, for example, four, six, seven, etc.

The side view of Fig. 15 illustrates a further embodiment of a work table 10 according to the invention. Here, a total of three leg members are provided, which are interconnected by support beams 11. The leg members 9 are arranged so that the frame members 1, which are each mounted on an upper side of the leg members, parallel to each other. In the same way as in the representation of Fig. 5 is defined by the bearing surfaces 5 of the respective contact elements 3, which are attached to the upper side 2 a of an associated support member 2, a plane E, which forms a virtual table surface for the work table 10. By the in Fig. 15 Work table shown can be extremely long work pieces whose total length is greater than the distance between the two in Fig. 15 shown outer leg members 9.

The in Fig. 15 shown work table 10 can in the same manner as in the illustrations in the Fig. 11 to 14 be provided with additional frame members which are mounted between the respective leg members 9. Fig. 16 shows an enlarged view of the area II of Fig. 15 in the event that the work table is provided on both sides of the central leg element 9 with further spacer bridges or frame components 1. The top of these additional spacer bridges or the contact elements attached thereto is located exactly at the same height as the support surface 5 of the contact element 3, which is fastened on the frame component 1 connected to a leg element 9. As a result, a constant horizontal plane E is defined, which forms the virtual table surface for the work table 10.

In Fig. 1 is shown by the designated "7" dash-dotted line a screw, by means of which the contact element 3 can be screwed to the support member 2. This screw can be formed in the formed in the contact element 3 countersunk holes 8 (see. Fig. 3 ).

The representation of the contact element 3 in the Fig. 16 illustrates the configuration of a through hole within the contact element 3, in each of which 3 countersunk holes 8 are formed adjacent to the opposite longitudinal sides of the contact element. This makes it possible to attach the contact element 3 optionally with its side surface 3a or with its side surface 3b on the top 2a of the support member 2, because a screw head of a corresponding screw 7 is received in the sinkhole 8 respectively. At the free end of the support web 12 of a frame member 1, for example in the form of a spacer bridge, a countersunk hole 8a may also be formed ( Fig. 16 ), for receiving a screw, with which the frame member 1 is attached to the support member 2.

The frontal view of Fig. 17 illustrates a further embodiment of the contact element 3, which has a square cross-section. As a result, there is the possibility that the contact element 3 is optionally fastened with a side surface of its total of four side surfaces on the upper side 2 of the frame component 1. In the event of damage to one of the side surfaces, after loosening the screw connection 7, the contact element 3 can be rotated about its longitudinal axis in order to re-screw it to the frame component 1 with another side surface.

Fig. 18 shows a further embodiment of the frame member 1 according to the invention, namely in a plan view of the top 2a of the support member 2. Here, a plurality of elongate contact elements 3 are mounted on the upper side 2 of the frame member 1, said contact elements with their longitudinal axis respectively transverse to the longitudinal axis of the frame member are arranged. This embodiment is suitable for the support of workpieces with a particularly large width and has the advantage that only relatively few contact elements are to be used along the longitudinal extension of the frame component 1.

Fig. 19 shows a further embodiment of the frame member 1 according to the invention, namely in a plan view of the top 2a of the support member 2. At the top 2a of the support member 2, a web 6a is arranged, with which the contact element 3 can be brought into contact contact and is thus fixed in a predetermined position on the top 2a of the support member 2. In the presentation of Fig. 19 For example, two contact elements 3 are shown. In the contact element 3 shown in the picture above, a web 6a is fixed on the support element 2 on the end face thereof, so that thereby the position of the contact element 3 in the longitudinal direction of the support element 2 is determined. Additionally and / or alternatively, a web 6a may also be provided adjacent to a side surface of the contact element 3, so that an alignment of the contact element 3 with respect to the width of the carrier element 2 is possible. As illustrated in the contact element 3 shown in the image below, webs 6a can also be provided adjacent to both side edges of the contact element 3.

The provision of a web 6a on the upper side 2a of the carrier element 2 facilitates accurate positioning of a contact element 3 when it is mounted or replaced on the carrier element 3. In this context, it is understood that the points at which a respective web is provided on the carrier element are matched with the location of a bore or a through-hole in the carrier element in order to fasten the contact element 3 on the carrier element 2 by a screw connection. Furthermore, it should be noted that the height of a web 6a - in the vertical direction - is preferably smaller than the height of the contact element 3, so that a workpiece placed on the contact element does not come into direct contact with the web 6a. A web 6a may be permanently attached to the support member 2, for example, by welding or gluing, or be releasably secured thereto by a screw. A web 6a can also in the groove 6 (see. Fig. 2 be arranged to thereby define a predetermined position of a contact element 3 within the groove in the longitudinal direction of the support member 2.

The above-described embodiments make it clear that the work table 10 according to the invention can be modular, in adaptation to a particular application and the dimensions of workpieces that are to be processed on the work table 10. The total length of the work table can in principle be extended without restriction by using a plurality of leg elements 9, on whose upper side a frame component is attached in each case. Preferably, at least one such frame member according to the present invention is formed, according to the above explanation of the Fig. 1-4 ,

Starting from the in Fig. 15 As shown, it is also possible to build a work table with more than three leg elements 9, wherein the frame members 1, which are mounted on the individual leg elements 9, are aligned parallel to each other. The possibility of a modular construction of the work table 10 is further supplemented in that between the frame members 1, which are provided on the leg members 9, at least one additional frame member in the form of a spacer bridge can be mounted, with an upper side of this spacer bridge also part of the virtual Tischftäche of Work table is 10. By a plurality of such additional spacer bridges (eg as in Fig. 14 shown) can be the virtual table surface of the work table 10 "compact" so that workpieces with a comparatively small overall length can be placed on the work table 10.

Another possibility for a modular construction of the work table 10 is possible in that a frame member 1, which is mounted on a separate leg member 9, is arranged in series with a frame member adjacent thereto. In the Fig. 10 this is symbolically indicated by double-dashed lines 14. For attachment of these frame members to each other mounting plates 15 are fixed to the end faces of the support members 3, in which at least one through hole 16 is formed. In the Fig. 5 Such a mounting plate 15 is shown on the front side of a support member 3, wherein in the Fig. 4 For reasons of simplicity, the mounting plate is omitted or not shown on the front side of the T-beam.

If two frame members 1 as shown by the double-dashed line 14 in FIG Fig. 10 are indicated in series with each other, so is the mounting plate 15 of a frame member 1 to the mounting plate 14 of the adjoining frame member 1 at. An attachment of these two mounting plates 15 together is possible by a suitable screw 17 which passes through said through holes 16 of the mounting plates 15. In this way, the dimension of the work table 10 can be increased in the direction of a longitudinal axis of the leg elements 9 or in the direction of the longitudinal extension of the frame components 1. In Fig. 5 and in Fig. 16 is the screw 17 exemplified by an "X" (namely, within the through hole 16) indicated.

The FIGS. 20 to 22 show a support member 2 according to a further embodiment of the invention and in particular illustrate a possible attachment of a support member 2 to a leg member. 9

The perspective view of Fig. 20 shows a support member 2 in the form of a double-T-carrier, on whose end faces in each case a vertical mounting plate 15 is attached. In the lower leg of the support member 2, a slot 18 is formed, whose longitudinal axis (in Fig. 20 denoted by "x") parallel to the longitudinal axis of the support member 2 extends. On a lower side of the carrier element 2, a first intermediate plate 20 is attached. In this regard, it is understood that the slot 18 is also formed in this first intermediate plate 20 and so far forms a through hole for a screw or the like.

At the lateral projections of the first intermediate plate 20 each threaded holes 22 are formed, wherein in the illustration of Fig. 20 can only be seen on the projection shown in the foreground of the picture. The purpose of these threaded holes 22 is with reference to FIGS Figures 23-25 explained in detail.

The perspective view according to Fig. 21 shows a leg member 9, on the upper end side of a second intermediate plate 24 is fixed, in which two slots 26 are formed. With respect to the elongated holes 26 understands sch that they are aligned with the slots 18 and their longitudinal axis, the in Fig. 21 is symbolized with "y", perpendicular to the longitudinal axis x of the slots 18 extends.

The perspective view according to Fig. 22 illustrates an attachment of the support member 2 according to Fig. 20 on a leg element 9 according to FIG Fig. 21 , The determination of the support member 2 with respect to the leg member 9 by means of a screw 28 which passes through the slots 18 and 26. By means of a displacement of the first intermediate plate 20 relative to the second intermediate plate 24, which is possible through the oblong holes 18 and 26, the carrier element 2 can be variably fixed with respect to the leg element 9 in the xy plane.

Evidence of the representation in Fig. 22 For example, a foot plate 9a of the leg member 9 may have through holes 9b for screwing the foot plate 9a to a foundation or a bottom surface. This ensures that the leg element 9 is set up or remains at a predetermined point and a defined distance of a support element 2 attached thereto is ensured with respect to adjacent support elements.

The height adjustability of the leg member 9 with respect to the base plate 9a is realized by a screw 9c.

• Das Trägerelement 3 und das Beinelement 9 in der Stirnseitenansicht von Fig. 23 entsprechen den Ausführungsformen gemäß der Fig. 20 und 21. Wie bereits erläutert, sind in den seitlichen Auskragungen der ersten Zwischenplatte 20 jeweils Gewindelöcher 22 ausgebildet. Diese Gewindelöcher 22 dienen zur Auf nahme von Positionsschrauben 30. Falls eine Positionsschraube 30 in ein Gewindeloch 22 hineingeschraubt wird, gelangt eine Stirnseite dieser Positionsschraube 30 In Kontakt mit einer Oberfläche der zweiten Zwischenplatte 24. In Abhängigkeit davon, wie weit die Positionsschraube 30 in das Gewindeloch 22 hineingeschraubt wird, kann eine Neigung und/oder ein Abstand des Trägerelements 2 mit der daran befestigten ersten Zwischenplatte 20 relativ zum Beinelement 9 mit der daran befestigten zweiten Zwischenplatte 24 eingestellt werden.

Another adjustment of the support member 2 with respect to the leg member 9 is in the FIGS. 23 to 25 shown. In detail:

• The support element 3 and the leg element 9 in the end view of Fig. 23 correspond to the embodiments according to the FIGS. 20 and 21 , As already explained, threaded holes 22 are respectively formed in the lateral protrusions of the first intermediate plate 20. These threaded holes 22 are used to measure position screws 30. If a position screw 30 is screwed into a threaded hole 22, enters an end face of this position screw 30 in contact with a surface of the second intermediate plate 24. Depending on how far the position screw 30 is screwed into the threaded hole 22, an inclination and / or distance of the support member 2 with the first intermediate plate 20 attached thereto relative to the leg member 9 with the second intermediate plate 24 attached thereto can be adjusted.

With regard to the elongated hole 18, the first intermediate plate 20 and the positional screws 30, it will be understood that these can be provided on a carrier element 2 on both end faces.

As shown by Fig. 23 the positional screws 30 are adjusted such that the first and second intermediate plates 20, 24 lie flat on one another. In the presentation of Fig. 24 the position screws 30 are screwed evenly into the threaded holes 22, such that the first intermediate plate 20 is spaced approximately parallel by a distance a to the second intermediate plate 24. Thus, a distance of the support member 2 with respect to the leg member 9 in the vertical direction z can be adjusted or changed. Finally, the frontal view of Fig. 25 in that the carrier element 2 can also be attached to the leg element 9 in an inclined manner by screwing a position screw 30 on one side of the first intermediate plate 20 more into the corresponding threaded hole 22 than on the respective other side of the first intermediate plate 20. The illustration of FIG Fig. 25 illustrates an example of an inclination of the support member 2 to the left, in the same way, by a corresponding adjustment of the position screws 30, a tilt to the right is adjustable.

In this context, it should be noted that the screw 28 for fixing the support member 2 is tightened to the leg member 9 only when previously introduced the position screws 30 by a predetermined distance in the threaded holes 22 and thus resting the Trägerelemtents 2 on the Leg element or possibly a spacing between these components have been set.

Regarding the embodiments of the Fig. 20 to 25 It is understood that these adjustment options can be provided for some or even all support elements 2 and the associated leg elements 9. In any case, it is possible by means of the screw 28 in conjunction with the slots 18 and 24 and the position screws 30 to adjust a support member 2 in any direction with respect to a leg member 9 exactly, namely in the x, y and z direction. As a result, deformations or deformations that can experience a work table in the workplace by impact or the like, can be compensated quickly and inexpensively, namely by adjusting the attachment of a respective support member 2 to an associated leg element. 9

Not shown in the drawing is the possibility of forming the carrier element 2 as a solid or hollow rectangular profile. This is particularly useful in cases where on the work table 10 workpieces with only low weight, e.g. made of plastic and / or with small dimensions.

In all variants of the above-described work table 10, it is possible that the frame members (ie, the support members 2 and / or the contact elements 3) have at their top at predetermined intervals through holes or threaded blind holes into which pins can contribute for a predetermined positioning of workpieces , By contact with such pins can be workpieces on the work table 10 time-saving and precisely align in a predetermined position.

The above-described work table 10 can be used in particular as a mounting table for workpieces, regardless of the type, size and nature of the workpieces to be machined. In particular, the possibility of attaching additional frame members 1 between two parallel aligned frame members 1 allows a flexible and time-saving retooling of the work table 10 with respect to the desired table surface E, in adaptation to different dimensions of workpieces. A move of workpieces on the work table 10 is facilitated if the support surface 5 of the contact element 3 is provided with a low-friction coating which has a low sliding coefficient.

The above-described work table 10 is particularly suitable as a table for stapling before welding workpieces, or as a welding table or as a mounting table, with workpieces that are placed on the table surface E of the work table 10, are processed by welding. Here, a workpiece can be clamped by means of screw clamps or the like to the respective frame members 1. Subsequently, the workpiece can be connected by welding with other workpieces, which are also placed on the work table 10 or clamped.

If the contact element 3 made of stainless steel and the support member 2 are made of conventional steel, it is advisable to provide an intermediate layer on a contact surface between the contact element 3 and the support element 2. With this intermediate layer is a direct contact of the stainless steel to the conventional steel and thus in particular avoid contact corrosion. By way of example, this intermediate layer may be provided on the contact element 2, which may be seen in FIG Fig. 2 simplified symbolized by a hatching with the reference numeral 3c. Alternatively, the intermediate layer 3c may also be provided in the groove 6.

As an alternative to a complete design of the contact element 3 made of stainless steel, it is also possible to produce only the upper part of stainless steel, which in the Fig. 2 is denoted by the reference numeral 3d to come into contact with the workpieces 4 when placing. This upper part 3d can be suitably connected to the remaining part of the contact element 3, which is not made of stainless steel, for example by means of countersunk screws, and thereby easily replaced or turned over in case of damage. Here too, an intermediate layer (not shown) is provided on the contact surface between the upper part 3d and the remaining part of the contact element in order to prevent excessive corrosion.

The formation of the contact element 3 or its upper part 3d made of stainless steel allows on the work table 10, the problem-free processing of workpieces 4 made of stainless steel.

The work table 10 according to the invention has the advantage, with respect to all embodiments mentioned above, that the bearing surfaces 5 of the respective frame components 1 are formed by said contact elements 3 which, in the case of contamination and / or damage, can be selectively mounted on the support elements 2 or completely replaced ,

Claims (15)

1. A frame assembly (1) for a work table (10) comprising a longitudinal extension and a modular structure with a support member (2) and with at least one contact element (3), with at least one replaceable contact element (3) being mountable on an upper face (2a) of the support member (2), characterised in
   that the contact element (3) forms a supporting surface (5) for a workpiece (4), and
   that the contact element (3) is solid and comprises a rectangular cross-section so that it is optionally fastenable on the support member (2) with at least two different lateral surfaces (3a, 3b).
2. A frame assembly (1) for a work table (10) comprising a longitudinal extension and a modular design with a support member (2) and with at least one contact element (3), with at least one replaceable contact element (3) being mountable on an upper face (2a) of the support member (2), characterised in
   that the contact element (3) forms a supporting surface (5) for a workpiece (4), and
   that the contact element (3) comprises a polygonal or at least a partly rounded cross-section, preferably that the contact element (3) with a polygonal cross-section is optionally fastenable on the support member (2) with at least two different lateral surfaces (3a, 3b).
3. A frame assembly (1) according to claim 1 or 2, characterised in that means (6) are provided on the upper face (2a) of the support member (2) by means of which the contact element (3) can be brought into contact in particular by a positive connection, and thus can be arranged in a predetermined position on the upper face of the support member (2).
4. A frame assembly (1) according to any one of the preceding claims, characterised in that the contact element (3) is fastenable on the upper face (2a) of the support member (2) in such a manner that at least on one side edge (2r) of the support member (2) and adjacent to the contact element (3) a defined attaching area (13, 13a, 13b) for at least one additional frame assembly (1) is formed, preferably that the contact element (3) on the upper face (2a) of the support member (2) with regard to its width is fastenable substantially centrically so that on the upper face (2a) of the support member (2) on both sides of the contact element (3) defined attaching areas (13, 13a, 13b) each are formed for at least one additional frame assembly (1).
5. A frame assembly (1) according to any one of the preceding claims, characterised in that the support member (2) is formed as a T-beam, preferably as a double T-beam, the centrical web (2b) of which is arranged vertically, with the at least one contact element (3) being fastened on the upper face (2a) of the support member (2) in such a manner that it is aligned with the centrical web (2b).
6. A frame assembly (1) according to any one of the preceding claims, characterised in that the contact element (3) or at least a part of it is made in particular of hardened steel, stainless steel, aluminium, copper, plastic or wood.
7. A frame assembly (1) according to any one of the preceding claims, characterised in that the contact element (3) on its supporting surface (5) for a workpiece (4) is provided with a coating, with the coating making an adhesion of foreign matter and/or contaminations at least difficult and/or comprising a low sliding coefficient, preferably that the contact element (3) in the case of manufacture from stainless steel is provided with a coating (3c) adjacent to the support member which coating prevents direct contact of the contact element (3) made of stainless steel with the support member (2).
8. A frame assembly (1) according to any one of the preceding claims, characterised in that the contact element (3) comprises a longitudinal extension and with its longitudinal axis is mounted substantially in parallel or transversely to the longitudinal axis of the support member (2) on its upper face (2a).
9. A frame assembly (1) according to claim 8, characterised in that in the case of mounting of the contact element (3) with its longitudinal axis in parallel to the longitudinal axis of the support member (2), the longitudinal extension of the contact element (3) is smaller than the longitudinal extension of the support member (2), preferably that the longitudinal extension of the contact element (3) is smaller than 100 cm, more preferably that the longitudinal extension of the contact element (3) is smaller than 50 cm, more preferably that on the upper face (2a) of the support member (2) a plurality of contact elements (3) is mounted.
10. A modular work table (10) with at least two frame assemblies (1) which are each formed according to the preamble of claim 1 or 2, and with a tabletop,
    characterised in
    that the frame assemblies (1) are formed according to the characterising portion of claim 1 or claim 2 or according to the characterising portion of claims 3 to 9 in connection with the characterising portion of claim 1 or claim 2 and taking into consideration the relations of claims 3 to 9, with the tabletop as a virtual tabletop (E) being formed by the supporting surfaces (5) of the contact elements (3).
11. A work table (10) according to claim 10, characterised in that the at least two frame assemblies (1) with their longitudinal extension are positioned substantially in parallel to each other, preferably that all frame assemblies (1) are formed according to any one of claims 1 to 9, more preferably that three or more frame assemblies (1) are provided which are aligned to each other in parallel and together form the virtual tabletop (E).
12. A work table (10) according to claim 10 or 11, characterised in that at least two frame assemblies (1) according to claim 4 are provided, at least one additional frame assembly (1) being provided between these two frame assemblies (1) which with its free ends rests on a respective attaching surface of the corresponding adjacent frame assembly (1) according to claim 4, preferably that the additional frame assembly (1) between the two frame assemblies (1) adjacent to it is fixable on different predetermined positions, more preferably that two additional frame assemblies (1) are provided between the frame assemblies (1) according to claim 4 so that the virtual tabletop is mounted by in total four frame assemblies (1).
13. A work table (10) according to claim 12, characterised in that the additional frame assembly (1) is formed according to any one of claims 1 to 9.
14. A work table (10) according to any one of claims 10 to 13, characterised in that at least one leg element (9) is provided to which a support member (3) of a frame assembly (1) is fastenable, with means (28, 30) being provided by which a position of the support member (3) relative to the leg element (9) is variably adjustable in vertical height (z) and/or in horizontal direction (x-y), preferably that the means for adjustment in vertical height (z) are formed by position screws (30) by means of which a distance of the support member (3) with respect to the leg element (9) is adjustable, and that the means for adjustment in horizontal direction (x-y) are formed by elongated holes (18, 26) which are formed each in the support member (3) and a portion of the leg element (9) adjacent to it.
15. A use of a modular work table (10) according to any one of claims 10 to 14 as a welding table or as an assembly table or as a table for tack welding of workpieces, in particular in the field of steel construction.

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