EP2644303B1 - Machine subframe - Google Patents

Description

The invention relates to a machine base for a machine tool, according to the preambles of claims 1 and 2, in particular for a powered circular table saw, comprising a machine frame which limits at least in a storage position of the machine base a receiving space for protected receiving and supporting the machine tool, and at least three, preferably four support legs which are pivotally mounted on the machine frame.

Such machine bases are known from the prior art and basically have the advantage that the machine base frame can be transferred from a storage position to an operating position in which the support legs serve to support the machine frame on a substrate, wherein the support legs in the storage position at least partially within of the limited by the machine frame receiving space are added. As a result, the machine base frame with the machine tool in the storage position is comparatively compact, while in the operating position of the machine frame reliable support of the machine tool is achieved.

Such a machine undercarriage is known for example from Festool, wherein the support legs can be pivoted in pairs in relation to the machine frame in the receiving space. Thus, the paired support legs do not interfere with each other in eingeschwenktem state, the pivot axis of the first Support leg pair arranged with a larger distance in the operating position to the ground than the pivot axis of the second support leg pair.

Furthermore, known from the prior art racks for supporting and storing a machine tool, which are designed to be foldable, the racks are also suitable for transporting the machine tools. Such racks are for example from the documents DE 10 2009 058 464 A1 and US 7,690,408 B2 known.

A disadvantage of such racks, which can also be used for transport at the same time, is often that they are relatively bulky in the storage position. Furthermore, these often have limited in practice stability in the operating position.

Other table bases, which can also be used for transport at the same time, for example, from the documents US 6,360,797 B1 and DE 90 01 120.1 U1 known. Even with these, the stability of the frame in the operating position is limited.

Finally, the reveals EP 1 614 508 A1 As the closest prior art for each of claims 1 and 2 a table base with pivoting legs, which can be securely fixed in two pivot positions via a holding arrangement. The first position defines an operating position in which the leg is used for supporting the undercarriage, while the second position can be used for stowage or storage of the undercarriage. For this purpose, the holder assembly comprises a clamp with a clamping screw and two groove-shaped recesses into which the associated leg can be received and clamped by means of the clamping screw and the clamp.

Compared to the known prior art, an object of the present invention is to provide a machine undercarriage, which enables the most stable possible support of an attached machine tool in the operating position and in a storage position as compact as possible collapsible, the machine tool in particular in the storage position by the components the machine undercarriage protected within the receiving space is added.

Accordingly, the present invention proposes a machine underframe according to a first aspect with the features of claim 1 and according to a second aspect with the features of claim 2 for a machine tool, in particular for a powered table saw. This includes according to the invention a machine frame which limits at least in a storage position of the machine undercarriage a receiving space for protected receiving and supporting the machine tool, and at least three, preferably four, support legs which are pivotally mounted on the machine frame, the machine underframe from its storage position into an operating position can be converted, in which serve the support legs for supporting the machine frame on a substrate, wherein the support legs are at least partially accommodated in the storage position within the limited by the machine frame receiving space, and wherein the

Support legs in the storage position with respect to the machine frame are all pivoted in a substantially same pivoting direction. According to the invention it is further provided that the support legs are independently pivotable and the pivot axes about which the support legs are pivotable, are arranged inclined to each other. In this way it is possible to increase the footprint of the support legs spanned in the operating position of the machine undercarriage by the support legs and thus to ensure better stability of the machine undercarriage.

Because not, as in the prior art, the support legs are pivoted to each other, but in a same pivoting direction, it is not necessary to arrange the pivot axes at different distances to the ground, whereby a higher stability is achieved. At the same time, however, the support legs can continue to be largely absorbed in the receiving space of the machine frame, without these interfere with each other. As a result, an extremely compact storage position of the machine frame is reached.

According to the present invention, the machine frame does not necessarily mean a closed, ie circulating, frame. Instead, it is referred to a frame assembly that spans, for example via frame struts or - profiles and the like a corresponding receiving space. At these struts or profiles can additional side walls or side panels are attached, which provide a laterally enclosed receiving space.

However, the receiving space does not necessarily have to be laterally enclosed by the frame. Thus, it may be useful for a particularly lightweight embodiment of such a machine undercarriage to form the machine frame as possible only by individual interconnected struts that limit the receiving space such as side edges of a cuboid.

The machine frame according to the invention is supported by at least three support legs in its operating position of a substrate, wherein four support legs are preferably provided for improved stability. The arrangement of more than four support legs is of course also conceivable, but this regularly no additional technical advantage will be achieved.

In order to transfer the machine frame from the operating position to its storage position and vice versa, the support legs are pivoted relative to the machine frame. For this purpose, these are pivotally mounted on the machine frame.

Essential to the invention is according to a first aspect of the present invention, that the support legs are not pivoted in the direction of each other and thus in different directions with respect to the machine frame, but all in a substantially same pivoting direction. Seen from the front, ie from the position that a user in the use Machine tool would take regular, all legs can be pivoted relative to the machine frame, for example, to the right or to the left, to the rear or to the front.

According to the invention, at least one of the support legs is also mounted on the machine frame by means of a hinge connection, which, in addition to the pivotability of the support leg relative to the machine frame, also permits a translatory displacement of the at least one support leg relative to the machine frame. By providing this special hinge connection, it is possible not only to pivot at least one, preferably two, of the support legs but also to push them into the receiving space of the machine frame (for a more compact bearing). Thus, a first pair of support legs can be pivoted into the receiving space while the second pair of support legs are pivoted away from the receiving space and then slid into the receiving space in a further step (before or after pivoting) by relative displacement. The feet of the support legs, d. H. those ends of the support legs that contact the ground in the operating position, can still protrude from the machine frame in the second pair of support legs, whereby easier handling is ensured when the machine base is to be transferred from the storage position back to an operating position.

According to a second aspect of the present invention, a machine base for a machine tool provided, in particular for a powered circular table saw, which comprises a machine frame which limits at least in a storage position of the machine undercarriage a receiving space for protected receiving and supporting the machine tool, and at least three, preferably four support legs which are pivotally mounted on the machine frame, wherein the machine undercarriage can be transferred from its storage position into an operating position in which serve the support legs for supporting the machine frame on a substrate, wherein the support legs are at least partially accommodated in the storage position within the bounded by the machine frame receiving space, and wherein the support legs by means of a hinge connection to the Machine frame are mounted, in addition to the pivotability of the respective support leg relative to the machine frame also allows a translational displacement of the respective support leg relative to the machine frame.

Consequently, in this second aspect of the invention not only one or two of the support legs are pivoted and displaced relative to the machine frame, but all the support legs.

In this case, each support leg may be assigned a separate articulated connection or, for example, a separate articulated connection to each pair of support legs.

In a further development of the invention it can be provided that the articulated connection comprises at least a first receiving area, through which a frame strut of the machine frame is able to extend, and a second receiving area through which a support leg is able to extend.

Alternatively, however, the hinge connection may also be attached to a frame strut or other part of the machine frame, without the frame strut having to extend through a first receiving area of the hinge connection. Of course, in such an embodiment, the formation of a single receiving area is sufficient.

In this case, the hinge connection can pivot about the recorded in their first receiving area frame strut, so that the associated support leg can also perform a pivoting movement about the extending through the receiving area frame strut. In addition, the support leg relative to the hinge connection along the second receiving area, through which it extends, be moved.

The machine base may further include a roller assembly for rolling the machine base on the ground. This is particularly favorable when the machine tool is not only to be put into operation and stored in one place, but has to be transported from the place where it is operated to another place where it is to be stored. In this case, the roller arrangement may preferably be arranged on the machine frame.

In such an embodiment, in combination with the at least one displaceable support leg, there may be a third defined position of the machine undercarriage, the so-called transport or trolley position, in which one or two displaceable support legs as well as the other pivotable support legs already from the operating position to the storage position has been or were, but not yet inserted into the receiving space is or are. This support leg or these support legs can then, similar to a trolley, be used as a handle for guiding the machine undercarriage. The roller assembly can be arranged, for example, in the vicinity of the other two support leg bearing points on the machine frame.

Furthermore, it can be provided that the machine frame comprises a base plate, which can be used in the operating position of the machine frame as a support surface for a workpiece to be machined. This base plate can protrude laterally in particular over the machine frame, d. H. be broader and deeper in their basic dimensions than the supporting machine frame.

It can also be provided that the support legs can be secured in the operating position and / or in the storage position by means of a securing mechanism in its position against pivoting. In addition, it can be provided that in an embodiment in which at least one pivotable and at the same time relatively displaceable support leg is provided, the securing mechanism can also serve to additionally secure at least one pivotable and displaceable support leg against relative displacement. In a coupling of a fuse against pivoting and securing against displacement (translational movement), for example, the securing mechanism may also be designed such that a displacement of the respective support leg is provided only in certain angular positions of the support leg, eg only in a swung-out position, in the support leg serves to support the machine frame is a translational displacement of the support leg relative to the machine frame prevented by the securing mechanism.

The securing mechanism may comprise a number of securing parts, of which at least one securing part is firmly connected to the machine frame (frame securing part) and cooperating with at least one corresponding securing part, which is firmly connected to one of the support legs (support leg securing part). In this case, one of the securing parts or the corresponding securing parts (i.e., the frame securing part or the supporting leg securing part) may, for example, comprise a securing projection capable of locking into a securing part (i.e., supporting leg securing part or the frame securing part) formed as a recess. However, alternative embodiments are also conceivable, for example, that the frame securing part and the support leg securing part are formed as two projections, which are able to support one another safely.

For example, the securing projection may be disposed on a manually operable lever or the like and disengaged from or engaged with the recess or the other projection by operation of the lever. Furthermore, it may be favorable to bias one of the securing parts elastically in the direction of the securing position, for example by means of a spring element.

Finally, the securing mechanism may comprise a number of securing stops, which are fixedly mounted on the machine frame and allow pivoting of the support legs in only a predetermined pivoting or the limit possible swivel angle at least one-sided. As a result, the operation of the machine undercarriage according to the invention is facilitated for the user who was possibly familiar with other folding machine bases of the prior art, since a malfunction (folding the support legs in the wrong direction) can be excluded thereby. Furthermore, by providing such safety stops, the stability of the machine undercarriage is additionally increased, in particular in the operating position.

The present invention will be explained in more detail below with reference to the accompanying drawings. In the figures, three preferred embodiments of the invention are shown, wherein individual features are combined. However, the person skilled in the art will consider the individual features in isolation and if necessary be able to put them together to form other meaningful combinations.

Figur 1

eine isometrische Ansicht des erfindungsgemäßen Maschinenuntergestells gemäß einer ersten Ausführungsform in Betriebsstellung,

Figuren 2a-f

das Maschinenuntergestell der Figur 1 in unterschiedlichen Stellungen;

Figuren 3a-d

ein erfindungsgemäßes Maschinenuntergestell gemäß einer zweiten Ausführungsform in unterschiedlichen Stellungen und Ansichten; und

Figuren 4a-d

ein erfindungsgemäßes Maschinenuntergestell gemäß einer dritten Ausführungsform in unterschiedlichen Stellungen und Ansichten.

They show schematically:

FIG. 1

an isometric view of the machine undercarriage according to the invention according to a first embodiment in the operating position,

FIGS. 2a-f

the machine base of the FIG. 1 in different positions;

FIGS. 3a-d

an inventive machine undercarriage according to a second embodiment in different positions and views; and

FIGS. 4a-d

an inventive machine undercarriage according to a third embodiment in different positions and views.

In the figures, different exemplary embodiments of a machine undercarriage according to the invention are shown. This concerns the FIGS. 1 to 2f a first embodiment, the FIGS. 3a to d a second embodiment, which corresponds to the first largely as well as the FIGS. 4a to d a third embodiment. Matching features are denoted by the same reference numerals in the figures, preceded by the numeral "1" in the second embodiment and the numeral "2" in the third embodiment.

The FIGS. 1 to 2f show a machine undercarriage according to the invention according to the first embodiment, which is generally designated by the reference numeral 10. The machine base 10 includes a machine frame 20 and support legs 30 hinged thereto FIG. 1 can be seen, the machine frame 20 is essentially limited by interconnected frame struts 20a, which may be connected to each other, for example via separate connecting parts 20c. Alternatively, however, they can also be directly, for example by welding, cohesively or positively, for example, by forming, be connected to each other.

Furthermore, four side parts 20b are arranged on the struts 20a of the machine frame 20, which laterally close off the machine frame 20 in the embodiment shown. In an alternative embodiment variant, however, it is of course also possible to dispense with these side parts 20b.

The struts 20a define a receiving space inside the machine frame 20 in which components of a machine tool attached thereto, such as the drive, can be received protected. In the embodiment shown is in the FIG. 1 of the machine tool, a table saw, only the sawing arrangement 60 comprising the saw blade 62 and an associated protective arrangement 64 are shown, wherein the saw blade 62 projects only partially from a base plate 24 of the machine frame 20.

The base plate 24 is used during operation of the machine tool to support workpieces to be machined. Accordingly, the base plate 24 in the region of the saw blade 62 of the table saw has a defined slot-shaped recess 26, through which the saw blade 62 can extend at least partially during operation of the machine tool. Furthermore, slidable stops 28a and 28b are provided on the base plate 24, which can form a contact surface for the tool to be machined.

Finally, a roller assembly with two rollers 22 is attached to the machine frame 20, which can serve for the rolling transport of the arranged on the machine base 10 machine tool.

Other details attached to the machine frame 20, such as a cable holder and operating units for operation (switching on and off and control) of the table saw should not be discussed in more detail in the context of the present invention.

The support legs 30 are in the in the FIG. 1 shown position of the machine undercarriage and support the machine frame 20 together with the machine tool (represented by the saw assembly 60) from a (not shown) underground from. In this case, the support legs 30 support legs 30a and 30b, which may for example be made of a material other than the support legs 30 itself, in particular rubber or the like, to provide better slip resistance and stability on the ground. The support legs 30a differ from the support legs 30b insofar as they have a flange which serves as a stop for the retractable support legs (cf. FIG. 2b ) serves. At the same time, the support feet 30a can be used as handles due to their shape (cf. Figure 2c ).

As will be explained in more detail below with reference to the different positions of the machine undercarriage, the support legs 30 via articulated joints 32 and 34 are pivotable mounted on the machine frame 20. In the first embodiment of the present invention, the articulated connections 32 and 34 differ from one another in that, in addition to a pivotability of the support legs 30 relative to the machine frame 20, the articulated connections 34 also provide a translational displaceability of the support legs 30 relative to the machine frame 20 becomes.

The different positions of the machine undercarriage according to the invention are in the FIGS. 2a to 2f shown, where FIG. 2a shows a storage position of the machine undercarriage 10 and the attached machine tool. From this storage position, the machine base 10 by a tilting movement (compare the arrow marked "B" in the FIG. 2b ) are transferred to a transport position. In order to facilitate the rolling transport of the machine undercarriage and the machine tool arranged thereon, two of the support legs 30, which were at least largely accommodated in the storage position within the receiving space of the machine frame 20, can be pulled out of this (compare the arrow marked "C" in FIG Figure 2c ). In this position, the so-called Trollerystellung, the machine base can be similar to a trolley easy to transport from one place to another, with the extended support legs 30 can serve for guiding and steering the rolling machine base.

Should now the machine base in the operating position of FIG. 2f be brought, so are also the other two support legs from the receiving space swung out (see the arrow denoted by "D" the Figure 2d ) and the support legs 30 used to guide the machine undercarriage pivoted into the operating position relative to the machine frame 20 (compare the arrow labeled "E" in FIG FIG. 2e ). Finally, the machine base only has to be tilted again to get into the operating position, in which all four support legs serve to support on the ground.

In the FIGS. 3a to 3c the individual usable positions of the machine undercarriage are shown again in detail. In 3d figure is the machine base like in the Figure 3c shown in his operating position, but not from the front, as in the FIGS. 3a-c but from the side.

The second embodiment of the FIGS. 3a to 3c and 3d corresponds largely to the machine base of the FIGS. 1 and 2a to 2f This embodiment has no side cheeks 20b and the machine tool attachable to the machine base has been omitted. Furthermore, the embodiment differs FIGS. 3a to 3d by the expression of the support legs of the sliding support legs. The support feet 130a of FIGS. 3a to 3d are designed such that they can serve as a handle in the Trollerystellung as well as attacks as in the first embodiment. However, due to their design, they complicate or prevent unwanted tilting of the machine undercarriage in the Operating position and thus ensure greater stability of the machine base 110 in its operating position.

As in the figures, especially in the Figures 3c and 3d can be seen, the joints or joints 132 and 134 differ from each other as follows: The in the Figure 3c Joint 132 shown on the left serves exclusively for the articulated mounting of the associated support leg 130 on the machine frame 120, wherein, as in particular in FIG 3d figure it can be seen that the associated strut 120a of the machine frame 120 in the areas in which a hinge 132 is attached thereto, not parallel to the base plate 124, but slightly inclined thereto. It follows that the pivot axes about which the joints 132 and thus the associated support legs 130 are pivotable relative to the machine frame 120, are also inclined to each other. In the deployed position, a larger footprint of the support legs 130 is thereby achieved on the ground, while in the retracted position, the support legs 130 can be better absorbed in the receiving space, without hindering each other.

The hinges 132 may comprise two hinge parts, which together form a first receptacle for the frame strut 120a on which they are arranged, and a second receptacle for the support leg to be fastened. The support legs can be attached to the joints 132 in different ways, for example, the receptacle can increasingly taper, so that an inserted support leg by friction in the recording is held. Alternative fastening variants, such as by form or material connection are also conceivable.

Furthermore, means can be provided in the region of the first receptacle, which enable the respective pivot 132 to pivot with as little friction as possible relative to the frame strut 120a, such as, for example, in FIG. a sliding bearing ring or the like. Finally, in the region of the second receptacle, a securing mechanism or securing arrangement 150 for securing the respective articulation may be provided in at least one position relative to the frame strut 120a.

The in the Figure 3c hinges 134 shown on the right can be mounted on the machine frame 120 in a similar manner, whereby also in these articulated joints 134 an inclined position of the pivot axes can be provided by the formation of the associated frame strut 120. In addition to a pivotability of the associated support legs 130, however, a translational displaceability of the support legs 130 is also provided by the hinged connections 134. Thus, a passage opening is provided on the articulated connections 134 in the region of the second receptacle, through which the associated support leg 130 can be pushed through, whereby the associated support foot 130a can be displaced towards or away from the machine frame 120. An inserted position is in the FIG. 3a shown, these as well as the FIG. 2b shows that, for a particularly space-saving reception of the support legs 130 within the receiving space, the angle of attack of the pivot axes of the respective support legs is selected such that that in the FIGS. 3a to 3c Right arranged support legs can be passed laterally on the left legs arranged.

In order for the machine undercarriage to be able to provide a reliable and secure support for a workpiece to be machined in the operating position, the securing arrangement 150 is additionally provided, which prevents undesired pivoting of the support legs 130 relative to the machine frame 120 in the case of the articulated connections 132 and an undesired one in the case of the articulated connections 134 Pivoting additionally prevents unwanted displacement of the support legs 130 relative to the machine frame 120.

Such a securing arrangement 150 can be formed, for example, by a displaceable locking bolt or the like, which can be brought into engagement with a corresponding securing element on the associated frame strut 120a for securing against undesirable pivoting movement. Such a corresponding securing element may comprise, for example, a recess, a recess or a counter-stop. The securing element can be arranged directly on the frame strut 120a or on an additionally firmly connected part, such as a latching plate. Furthermore, the displaceable locking pin can form a stop and thereby prevent undesired translational movement of the support legs relative to the joint 134.

In a conceivable embodiment, a locking lever with an associated locking pin in the region of the second recording the joint 132 or 134 may be provided, which is capable of lockingly engaging in a recess on the associated frame strut 120a in order to fix the joint 132 or 134 in its position. The same locking pin or another locking pin can serve as a stop for the support leg 130 in the second receptacle of the joint 134 and hold this in its extended position. To release the securing arrangement 150, the lever may simply be moved in such a way that the bolt is released from the respective engagement, so that this movement of the joint 132 or 134 relative to the frame strut 120a and / or the support leg 130 relative to the associated Articulated connection 134 allows. Particularly preferably, the securing arrangement 150 can additionally comprise an elastic element which pretensions the securing means of whatever kind in a securing position.

The FIGS. 4a to 4d show a further embodiment of a machine undercarriage according to the invention, in which both the formation of the machine frame 220 and the articulated connection of the support legs 230 on the machine frame 220 is different from the first two execution farms. The views of FIGS. 4a to 4d correspond to those of FIGS. 3a to 3d ,

The machine frame 220 of the third embodiment also includes a base plate 224 from which four frame struts 220a extend like legs down in the manner of a table. To stabilize additional support struts 254 are provided, which is as explained below as well Guide rails can serve for the retractable support legs.

The folding support legs 230 are all not only articulated in this embodiment, ie pivotally relative to this, connected to the machine frame 220, but also also slidably mounted on this. In this case, each of the leg-like support struts or leg brace 220a of the machine frame 220 has a recess 240 (indicated by dashed lines in FIG FIG. 4b ), through which the support legs 230 extend and through which they can be inserted into the receiving space.

The translational displaceability of the support legs 230 is limited by two stops 250 and 252 on the support legs 230. The first arranged in the receiving space stopper 250 is formed by a separate element which is connected via a hinge connection 234 with the associated support leg 230. The stop limited on the one hand, the extension movement of the respective support leg 230 from the receiving space of the machine frame 220. Furthermore, the stopper 250, however, also serve as Gleitfuß, which is guided in the guide rail 254.

The articulated connection 234 essentially comprises a slot 234b, in which a bearing pin 234a is received rotatably and displaceably. In this case, the bearing pin 234a may be fixedly connected to the support legs 230 and the slot 234b may be assigned to the stop element 250. In addition, the hinge connection 234 may comprise two hinge parts, the leg holder and the leg joint, which are fixedly connected at one end to the support leg 230 or the stop 250. At the respective other end of the joint parts, the elongated hole 234b or the bearing pin 234a accommodated therein is formed.

If a support leg 230 is then pulled out through the recess 240 until the stop 250 abuts against the inner side of the leg brace 220a, then the articulated connection 234 projects with the bearing pin 234a and the associated slot 234b already on the other side of the support brace 220a the support leg 230 can be pivoted relative to the stop 250 and thus also to the machine frame 220 (cf. Figure 4c ). Due to the inherent weight of the machine frame 220, the bearing pin 234a is displaced downwardly within the slot 234b so that the catches 240 are displaced relative to the upper edge of the leg joint of the hinge joint 234. An undesired folding away or insertion of the support legs 230 is thus prevented in this mechanism by an automatic lock.

The articulation 234 is in the unfolded position of the support legs (see Figure 4c ) on the outside of the machine frame 220, wherein the distance between the inner stopper 250 and the hinge pin 234a is selected such that the hinge joint 234 is held with the support leg 230 in contact with the machine frame 220. In this way it is ensured that the support legs can not be pivoted undesirable, but in the operating position of the machine undercarriage 210 (see. Fig. 4c and 4d ) provide a stable state of the machine undercarriage.

The contact surface on the outside of the machine frame 220 and the orientation of the elongated hole 234b are also selected such that pivoting of the associated support leg 230 is possible only in such a position in which the bearing pin 234a rests against the upper end of the slot 234b in FIG. 5c , Such a position of the bearing pin 234a with respect to the slot 234b can be achieved only in that the machine base is raised or in another position (comparable to the position in the FIG. 2b ) in which the user shifts the support leg 230 in the desired manner relative to the machine frame 220 until it can pivot relative to the machine frame 220. Only when the support leg 230 is pivoted relative to the machine frame 220, this can in turn be passed through the recess 240 and inserted into the receiving space of the machine frame 220.

In this case, the support leg 230 can be pushed into the receiving space until the second stop 252 comes to rest on the outside of the machine frame 220. As in FIG. 4d can be seen, the second stop 252 additionally serves as a stabilization by connecting two support legs 230 each.

In folded and pushed position serve the support legs 230 due to their one-sided leadership on the support strut 254 and the stopper 250 also as an additional Protection of the recorded within the receiving space machine tool components.

Claims (9)

1. Machine stand (10; 110) for a machine tool, in particular for a driven bench circular saw, comprising:

   - a machine frame (20; 120) which, at least in a storage position of the machine stand, delimits a receiving space for protectively receiving and supporting the machine tool, and

   - at least three, preferably four, support legs (30; 130) which are pivotably mounted on the machine frame,
   wherein the machine stand (10; 110) can be transferred from its storage position into an operating position in which the support legs (30; 130) serve to support the machine frame on an underlying surface, wherein, in the storage position, the support legs (30; 130) are received at least in certain sections within the receiving space delimited by the machine frame (20; 120), wherein, in the storage position, the support legs (30; 130) are all pivoted with respect to the machine frame (20; 120) in a substantially identical pivoting direction, wherein the support legs (30; 130; 230) can be pivoted independently of one another, and wherein the pivoting axes about which the support legs (30; 130; 230) can be pivoted are arranged with an inclination to one another,
   characterized in that
   at least one of the support legs (30; 130) is mounted on the machine frame (20; 120) by means of an articulated connection (34; 134) which, besides allowing the pivotability of the support leg (30; 130), additionally allows a translatory displacement of the at least one support leg (30; 130) relative to the machine frame (20; 120).
2. Machine stand (210) for a machine tool, in particular for a driven bench circular saw, comprising:

   - a machine frame (220) which, at least in a storage position of the machine stand, delimits a receiving space for protectively receiving and supporting the machine tool, and

   - at least three, preferably four, support legs (230) which are pivotably mounted on the machine frame (220),
   wherein the machine stand (210) can be transferred from its storage position into an operating positon in which the support legs (230) serve to support the machine frame (220) on an underlying surface, wherein, in the storage position, the support legs (230) are received at least in certain sections within the receiving space delimited by the machine frame (220), wherein the support legs (30; 130; 230) can be pivoted independently of one another, and wherein the pivoting axes about which the support legs (30; 130; 230) can be pivoted are arranged with an inclination to one another,
   characterized in that
   the support legs (230) are mounted on the machine frame (220) by means of an articulated connection (234) which, besides allowing the pivotability of the respective support leg (230), additionally allows a translatory displacement of the support leg (230) relative to the machine frame (220).
3. Machine stand (10; 110; 210) according to either of Claims 1 and 2, wherein the articulated connection (34; 134; 234) comprises at least a first receiving region through which a frame strut (20a; 120a; 220a) of the machine frame (20; 120; 220) is able to extend, and a second receiving region through which a support leg (30; 130; 230) is able to extend.
4. Machine stand (10; 110; 210) according to one of Claims 1 to 3, wherein the machine stand (10; 110; 210) further has a roller arrangement (22; 122; 222) for rolling the machine stand (10; 110; 210) on the underlying surface.
5. Machine stand (10; 110; 210) according to one of Claims 1 to 4, wherein, in the operating position and/or the storage position, the support legs can be secured in their position against pivoting and/or against displacement by means of a securing mechanism (150).
6. Machine stand (10; 110; 210) according to Claim 5, wherein, dependent on the angular position of the support legs relative to the machine frame, the securing mechanism is able to secure them against displacement or to release them for displacement.
7. Machine stand (10; 110; 210) according to Claim 5 or 6 wherein the securing mechanism (150) comprises a number of securing parts, of which at least one securing part is fixedly connected to the machine frame (20; 120; 220) and is able to interact in a securing manner with at least one corresponding securing part which is fixedly connected to one of the support legs (30; 130; 230).
8. Machine stand according to Claim 7, wherein the corresponding securing part comprises a lever with a securing projection and wherein the securing projection is able to engage in a securing manner in the securing part formed as a cutout.
9. Machine stand according to one of Claims 5 to 8, wherein the securing mechanism can comprise a number of securing stops which are fixedly mounted on the machine frame and allow pivoting of the support legs in only a predetermined pivoting direction or limit the possible pivoting angle at least on one side.

Images