EP2644303A1 - Machine subframe - Google Patents
Machine subframe Download PDFInfo
- Publication number
- EP2644303A1 EP2644303A1 EP13154249.0A EP13154249A EP2644303A1 EP 2644303 A1 EP2644303 A1 EP 2644303A1 EP 13154249 A EP13154249 A EP 13154249A EP 2644303 A1 EP2644303 A1 EP 2644303A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- machine
- support legs
- machine frame
- undercarriage
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000010348 incorporation Methods 0.000 abstract 1
- 210000001503 joint Anatomy 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/02—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby of table type
- B25H1/04—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby of table type portable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/14—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top
- B25H1/18—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top in inclination
Definitions
- the invention relates to a machine undercarriage for a machine tool, in particular for a powered circular table saw, comprising 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 pivotally mounted on the machine frame are stored.
- 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.
- 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.
- the paired support legs do not interfere with each other in Figureschwenktem 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.
- 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.
- an object of the present invention is to provide a machine undercarriage, which allows the most stable possible support of an attached machine tool in the operating position and as compact as possible collapsible in a storage position, the machine tool protected in particular in the storage position by the components of the machine undercarriage within recorded in the recording room.
- the present invention proposes a machine base for a machine tool, in particular for a driven table saw, the machine frame, at least in a storage position of the Machine underframe limited to 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 base can be transferred from its storage position to an operating position in which the support legs for supporting the Serving 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 are pivoted in the storage position with respect to the machine frame all in a substantially same pivoting direction.
- 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.
- the machine frame does not necessarily mean a closed, ie circulating, frame. Instead, it is referred to a frame assembly, for example, via frame struts or - profiles and the like a corresponding Spaced recording room. Side walls or side parts can additionally be attached to these struts or profiles, which provide a laterally enclosed receiving space.
- the receiving space does not necessarily have to be laterally enclosed by the frame.
- 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.
- the support legs are pivoted relative to the machine frame.
- 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 would regularly occupy in use of the machine tool, all support legs with respect to the machine frame, for example, to the right or to the left, back or forward can be pivoted.
- At least one of the support legs is also mounted by means of a hinge connection to the machine frame, which allows not only the pivotability of the support leg relative to the machine frame but also a translational displacement of the at least one support leg relative to the machine frame.
- a hinge connection 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).
- 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 ie 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 again from the storage position back to an operating position to be transferred.
- a machine base for a machine tool in particular for a powered table saw, comprising a machine frame defining a receiving space for protected receiving and supporting the machine tool at least in a storage position of the machine base, and at least three, preferably four support legs includes, which are pivotally mounted on the machine frame, wherein the machine frame can be transferred from its storage position into 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 limited within the limited by the machine frame Receiving space are received, and wherein the support legs are mounted by means of a hinge connection to the machine frame, in addition to the pivotability of the respective support leg relative to the Masc Hinenrahmen also allows a translational displacement of the respective support leg relative to the machine frame.
- each support leg may be assigned a separate articulated connection or, for example, a separate articulated connection to each pair of support legs.
- 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.
- 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.
- the formation of a single receiving area is sufficient.
- the articulated connection can pivot about the frame strut received in its first receiving region, so that the supporting leg connected thereto can likewise perform a pivoting movement about the frame strut extending through the receiving region.
- 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. It can the Roller assembly preferably be arranged on the machine frame.
- 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.
- 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 beyond the machine frame, ie be wider and deeper in its basic dimensions than the machine frame supporting it.
- 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, in the operating position of the machine undercarriage by the Support legs spanned footprint of the support legs to increase and thus to ensure better stability of the machine undercarriage.
- 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.
- the securing mechanism can also serve to additionally secure at least one pivotable and displaceable support leg against relative displacement.
- the securing mechanism can also be designed such that displacement of the respective supporting leg is provided only in certain angular positions of the supporting leg, e.g. only in a pivoted position in which 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 fixedly connected to the machine frame (frame securing part) and cooperating with at least one corresponding securing part, which is fixedly connected to one of the supporting legs
- one of the securing parts or the corresponding securing parts 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.
- a securing part i.e., supporting leg securing part or the frame securing part
- 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.
- 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.
- 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 direction or limit the possible pivot angle at least one side. This makes it easier for the user, who was possibly familiar with other folding machine bases of the prior art, the operation of the machine undercarriage according to the invention, as a malfunction (folding the support legs in the wrong direction) thereby can be excluded. Furthermore, by providing such safety stops, the stability of the machine undercarriage is additionally increased, in particular in the operating position.
- FIGS. 1 to 2f a first embodiment
- FIGS. 3a to d a second embodiment
- 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.
- 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 likewise be connected to one another directly, for example by welding, in a material-locking or form-fitting manner, for example by forming.
- 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.
- a machine tool such as the drive
- FIG. 1 of the machine tool a table saw
- 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.
- 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.
- 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.
- 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.
- the support feet 30a can be used as handles due to their shape (cf. Figure 2c ).
- the support legs 30 are pivotally mounted on the machine frame 20 via articulated joints 32 and 34.
- 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.
- FIGS. 2a to 2f 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 Trollery ein, 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.
- FIGS. 3a to 3c the individual usable positions of the machine undercarriage are shown again in detail.
- 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.
- 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 Trollery ein as well as attacks as in the first embodiment. In addition, however, they complicate or prevent due to their design, an undesirable tilting of the machine undercarriage in the operating position and thus ensure greater stability of the machine undercarriage 110 in its operating position.
- 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 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 is held by friction in the receptacle.
- Alternative fastening variants, such as by form or material connection are also conceivable.
- a securing mechanism or a securing arrangement 150 for Securing the respective joint may be provided in at least one position relative to the frame strut 120 a.
- 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.
- a translational displaceability of the support legs 130 is also provided by the hinged connections 134.
- 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.
- FIGS. 3a to 3c show that for a particularly space-saving recording of the support legs 130 is selected within the receiving space, the angle of the pivot axes of the respective support legs such that the in the FIGS. 3a to 3c Right arranged support legs can be passed laterally on the left legs arranged.
- the securing arrangement 150 is additionally provided which undesirably pivots the hinged connections 132 Supports support legs 130 relative to the machine frame 120 and prevents the articulated joints 134 in addition to unwanted pivoting additionally still an undesirable 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.
- 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.
- the displaceable locking pin can form a stop and thereby prevent undesired translational movement of the support legs relative to the joint 134.
- a locking lever may be provided with an associated locking pin in the region of the second receptacle of the joint 132 or 134 which is capable of lockingly engaging in a recess on the associated frame strut 120a to fix the hinge 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.
- the lever can simply be moved in such a way that the bolt is released from the respective engagement is released so that it allows a movement of the joint 132 or 134 relative to the frame strut 120 a and / or the support leg 130 relative to the associated hinge connection 134.
- the securing arrangement 150 can additionally comprise an elastic element which pretensions the securing means of whatever kind in a securing position.
- 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 embodiments.
- 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 as will be explained below can serve as guide rails for the retractable support legs.
- 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 the 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.
- the stopper 250 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.
- the bearing pin 234a may be fixedly connected to the support leg 230 and the slot 234b may be assigned to the stop element 250.
- the hinge joint 234 may comprise two hinge parts, the leg holder and the leg joint, which are fixedly connected at one end respectively 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.
- 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 only be achieved by that the machine base is raised or moved to another position (similar 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.
- 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.
- the second stop 252 additionally serves as a stabilization by connecting two support legs 230 each.
- the support legs 230 also serve as additional protection of the machine tool components received within the receiving space due to their one-sided guidance via the support strut 254 and the stop 250.
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Abstract
Description
Die Erfindung betrifft ein Maschinenuntergestell für eine Werkzeugmaschine, insbesondere für eine angetriebene Tischkreissäge, umfassend einen Maschinenrahmen, der zumindest in einer Lagerstellung des Maschinenuntergestells einen Aufnahmeraum zur geschützten Aufnahme und Abstützung der Werkzeugmaschine begrenzt, und wenigstens drei, vorzugsweise vier Stützbeine, die schwenkbar an dem Maschinenrahmen gelagert sind.The invention relates to a machine undercarriage for a machine tool, in particular for a powered circular table saw, comprising 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 pivotally mounted on the machine frame are stored.
Derartige Maschinenuntergestelle sind aus dem Stand der Technik bekannt und bieten grundsätzlich den Vorteil, dass das Maschinenuntergestell aus einer Lagerstellung in eine Betriebsstellung überführt werden kann, in der die Stützbeine zur Abstützung des Maschinenrahmens auf einem Untergrund dienen, wobei die Stützbeine in der Lagerstellung zumindest abschnittsweise innerhalb des durch den Maschinenrahmen begrenzten Aufnahmeraums aufgenommen sind. Hierdurch ist das Maschinenuntergestell mit der Werkzeugmaschine in der Lagerstellung vergleichsweise kompakt, während in der Betriebsstellung des Maschinenuntergestells eine zuverlässige Abstützung der Werkzeugmaschine erreicht wird.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.
Ein solches Maschinenuntergestell ist beispielsweise von der Firma Festool bekannt, wobei die Stützbeine jeweils paarweise gegenüber dem Maschinenrahmen in den Aufnahmeraum eingeschwenkt werden können. Damit sich die paarweise verbundenen Stützbeine in eingeschwenktem Zustand nicht gegenseitig behindern, ist die Schwenkachse des ersten Stützbeinpaares mit einem in der Betriebsstellung größeren Abstand zu dem Untergrund angeordnet als die Schwenkachse des zweiten Stützbeinpaares.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.
Weiterhin sind aus dem Stand der Technik Gestelle zum Abstützen und Lagern einer Werkzeugmaschine bekannt, die klappbar gestaltet sind, wobei die Gestelle ferner auch zum Transport der Werkzeugmaschinen geeignet sind. Derartige Gestelle sind beispielsweise aus den Dokumenten
Ein Nachteil von solchen Gestellen, die gleichzeitig auch noch zum Transport genutzt werden können, ist oftmals, dass diese in der Lagerstellung vergleichsweise sperrig sind. Weiterhin weisen diese oftmals eine in der Praxis begrenzte Stabilität in der Betriebsstellung auf.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.
Dem gegenüber besteht eine Aufgabe der vorliegenden Erfindung darin, ein Maschinenuntergestell bereitzustellen, das in der Betriebsstellung eine möglichst stabile Abstützung einer daran angebrachten Werkzeugmaschine ermöglicht und in einer Lagerstellung möglichst kompakt zusammenklappbar ist, wobei die Werkzeugmaschine insbesondere in der Lagerstellung durch die Komponenten des Maschinenuntergestells geschützt innerhalb des Aufnahmeraums aufgenommen ist.On the other hand, an object of the present invention is to provide a machine undercarriage, which allows the most stable possible support of an attached machine tool in the operating position and as compact as possible collapsible in a storage position, the machine tool protected in particular in the storage position by the components of the machine undercarriage within recorded in the recording room.
Demgemäß schlägt die vorliegende Erfindung ein Maschinenuntergestell für eine Werkzeugmaschine vor, insbesondere für eine angetriebene Tischkreissäge, das einen Maschinenrahmen, der zumindest in einer Lagerstellung des Maschinenuntergestells einen Aufnahmeraum zur geschützten Aufnahme und Abstützung der Werkzeugmaschine begrenzt, und wenigstens drei, vorzugsweise vier, Stützbeine umfasst, die schwenkbar an dem Maschinenrahmen gelagert sind, wobei das Maschinenuntergestell aus seiner Lagerstellung in eine Betriebsstellung überführt werden kann, in der die Stützbeine zur Abstützung des Maschinenrahmens auf einem Untergrund dienen, wobei die Stützbeine in der Lagerstellung zumindest abschnittsweise innerhalb des durch den Maschinenrahmen begrenzten Aufnahmeraums aufgenommen sind, und wobei die Stützbeine in der Lagerstellung bezüglich des Maschinenrahmens alle in einer im Wesentlichen gleichen Schwenkrichtung verschwenkt sind.Accordingly, the present invention proposes a machine base for a machine tool, in particular for a driven table saw, the machine frame, at least in a storage position of the Machine underframe limited to 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 base can be transferred from its storage position to an operating position in which the support legs for supporting the Serving 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 are pivoted in the storage position with respect to the machine frame all in a substantially same pivoting direction.
Dadurch, dass nicht, wie im Stand der Technik, die Stützbeine zueinander verschwenkt werden, sondern in eine gleiche Verschwenkrichtung, ist es nicht notwendig, die Schwenkachsen in unterschiedlichen Abständen zum Untergrund anzuordnen, wodurch eine höhere Stabilität erreicht wird. Gleichzeitig jedoch können die Stützbeine weiterhin weitestgehend in dem Aufnahmeraum des Maschinenrahmens aufgenommen werden, ohne dass diese sich dabei gegenseitig behindern. Hierdurch ist eine äußerst kompakte Lagerstellung des Maschinenuntergestells erreichbar.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.
Gemäß der vorliegenden Erfindung bezeichnet der Maschinenrahmen nicht notwendigerweise einen geschlossenen, d. h. umlaufenden, Rahmen. Stattdessen wird damit eine Rahmenanordnung bezeichnet, die beispielsweise über Rahmen-Streben oder - Profile und dergleichen einen entsprechenden Aufnahmeraum aufspannt. An diesen Streben oder Profilen können zusätzlich Seitenwände bzw. Seitenteile angebracht werden, die einen seitlich umschlossenen Aufnahmeraum bereitstellen.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, for example, via frame struts or - profiles and the like a corresponding Spaced recording room. Side walls or side parts can additionally be attached to these struts or profiles, which provide a laterally enclosed receiving space.
Der Aufnahmeraum muss jedoch nicht notwendigerweise durch den Rahmen seitlich umschlossen sein. So kann es hingegen für eine besonders leichte Ausführungsform eines derartigen Maschinenuntergestells sinnvoll sein, den Maschinenrahmen möglichst nur durch einzelne miteinander verbundene Streben zu bilden, die den Aufnahmeraum wie beispielsweise Seitenkanten eines Quaders begrenzen.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.
Der Maschinenrahmen wird erfindungsgemäß durch wenigstens drei Stützbeine in seiner Betriebsstellung von einem Untergrund abgestützt, wobei für eine verbesserte Stabilität vorzugsweise vier Stützbeine vorgesehen sind. Das Anordnen von mehr als vier Stützbeinen ist selbstverständlich grundsätzlich ebenfalls denkbar, wobei regelmäßig jedoch hierdurch kein zusätzlicher technischer Vorteil erzielt werden wird.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.
Um den Maschinenrahmen aus der Betriebsstellung in seine Lagerstellung und umgekehrt zu überführen, werden die Stützbeine relativ zu dem Maschinenrahmen verschwenkt. Hierzu sind diese schwenkbar an dem Maschinenrahmen gelagert.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.
Erfindungswesentlich ist gemäß einem ersten Aspekt der vorliegenden Erfindung, dass die Stützbeine nicht in Richtung zueinander und somit in verschiedene Richtungen bezüglich des Maschinenrahmens verschwenkt werden, sondern alle in einer im Wesentlichen gleichen Schwenkrichtung. Von vorne betrachtet, d.h. von der Position, die ein Anwender in Benutzung der Werkzeugmaschine regelmäßig einnehmen würde, können alle Stützbeine bezüglich dem Maschinenrahmen beispielsweise nach rechts oder nach links, nach hinten oder nach vorne verschwenkt werden.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 would regularly occupy in use of the machine tool, all support legs with respect to the machine frame, for example, to the right or to the left, back or forward can be pivoted.
Gemäß einer Weiterbildung der Erfindung ist zudem wenigstens eines der Stützbeine mittels einer Gelenkverbindung an dem Maschinenrahmen gelagert, die neben der Verschwenkbarkeit des Stützbeins relativ zu dem Maschinenrahmen auch eine translatorische Verschiebung des wenigstens einen Stützbeins relativ zu dem Maschinenrahmen ermöglicht. Durch Vorsehen dieser speziellen Gelenkverbindung ist es möglich, wenigstens eines, bevorzugt zwei der Stützbeine nicht nur zu verschwenken, sondern (für eine kompaktere Lagerung) in den Aufnahmeraum des Maschinenrahmens hineinzuschieben. So kann ein erstes Paar von Stützbeinen in den Aufnahmeraum hinein verschwenkt werden, während das zweite Paar von Stützbeinen von dem Aufnahmeraum weg verschwenkt wird und dann in einem weiteren Schritt (vor oder nach dem Verschwenken) durch relatives Verschieben in den Aufnahmeraum hinein geschoben wird. Die Füße der Stützbeine, d. h. diejenigen Enden der Stützbeine, die in der Betriebsstellung den Untergrund kontaktieren, können bei dem zweiten Paar von Stützbeinen noch aus dem Maschinenrahmen vorstehen, wodurch eine leichtere Handhabung gewährleistet ist, wenn das Maschinenuntergestell wieder aus der Lagerstellung zurück in eine Betriebsstellung überführt werden soll.According to one embodiment of the invention, at least one of the support legs is also mounted by means of a hinge connection to the machine frame, which allows not only the pivotability of the support leg relative to the machine frame but also a translational 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, ie 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 again from the storage position back to an operating position to be transferred.
Gemäß einem zweiten Aspekt der vorliegenden Erfindung wird ein Maschinenuntergestell für eine Werkzeugmaschine bereitgestellt, insbesondere für eine angetriebene Tischkreissäge, das einen Maschinenrahmen, der zumindest in einer Lagerstellung des Maschinenuntergestells einen Aufnahmeraum zur geschützten Aufnahme und Abstützung der Werkzeugmaschine begrenzt, und wenigstens drei, vorzugsweise vier Stützbeine umfasst, die schwenkbar an dem Maschinenrahmen gelagert sind, wobei das Maschinenuntergestell aus seiner Lagerstellung in eine Betriebsstellung überführt werden kann, in der die Stützbeine zur Abstützung des Maschinenrahmens auf einem Untergrund dienen, wobei die Stützbeine in der Lagerstellung zumindest abschnittsweise innerhalb des durch den Maschinenrahmen begrenzten Aufnahmeraums aufgenommen sind, und wobei die Stützbeine mittels einer Gelenkverbindung an dem Maschinenrahmen gelagert sind, die neben der Verschwenkbarkeit des jeweiligen Stützbeins relativ zu dem Maschinenrahmen auch eine translatorische Verschiebung des jeweiligen Stützbeins relativ zu dem Maschinenrahmen ermöglicht.According to a second aspect of the present invention, there is provided a machine base for a machine tool, in particular for a powered table saw, comprising a machine frame defining a receiving space for protected receiving and supporting the machine tool at least in a storage position of the machine base, and at least three, preferably four support legs includes, which are pivotally mounted on the machine frame, wherein the machine frame can be transferred from its storage position into 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 limited within the limited by the machine frame Receiving space are received, and wherein the support legs are mounted by means of a hinge connection to the machine frame, in addition to the pivotability of the respective support leg relative to the Masc Hinenrahmen also allows a translational displacement of the respective support leg relative to the machine frame.
Bei diesem zweiten Aspekt der Erfindung werden folglich nicht nur ein oder zwei der Stützbeine sowohl relativ zu dem Maschinenrahmen verschwenkt als auch verschoben, sondern alle Stützbeine.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.
Dabei kann jedem Stützbein eine separate Gelenkverbindung zugeordnet sein oder beispielsweise jedem Paar von Stützbeinen eine separate Gelenkverbindung.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 einer Weiterbildung der Erfindung kann vorgesehen sein, dass die Gelenkverbindung wenigstens einen ersten Aufnahmebereich umfasst, durch den sich eine Rahmenstrebe des Maschinenrahmens zu erstrecken vermag, sowie einen zweiten Aufnahmebereich durch den sich ein Stützbein zu erstrecken vermag.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.
Alternativ kann die Gelenkverbindung jedoch auch an einer Rahmenstrebe oder einem anderen Teil des Maschinenrahmens angebracht sein, ohne dass sich die Rahmenstrebe durch einen ersten Aufnahmebereich der Gelenkverbindung erstrecken muss. Bei einer solchen Ausführungsform reicht selbstverständlich die Ausbildung eines einzigen Aufnahmebereichs aus.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.
Dabei kann die Gelenkverbindung sich um die in ihrem ersten Aufnahmebereich aufgenommene Rahmenstrebe verschwenken, so dass das damit verbundene Stützbein ebenfalls eine Schwenkbewegung um die sich durch den Aufnahmebereich erstreckende Rahmenstrebe vollführen kann. Zudem kann das Stützbein relativ zu der Gelenkverbindung entlang des zweiten Aufnahmebereichs, durch den es sich erstreckt, verschoben werden.In this case, the articulated connection can pivot about the frame strut received in its first receiving region, so that the supporting leg connected thereto can likewise perform a pivoting movement about the frame strut extending through the receiving region. In addition, the support leg relative to the hinge connection along the second receiving area, through which it extends, be moved.
Das Maschinenuntergestell kann ferner eine Rollenanordnung zum Rollen des Maschinenuntergestells auf dem Untergrund aufweisen. Dies ist besonders günstig, wenn die Werkzeugmaschine nicht nur an einem Ort in Betrieb genommen und gelagert werden soll, sondern von dem Ort, an dem sie betrieben wird, zu einem anderen Ort, an dem sie gelagert werden soll, transportiert werden muss. Dabei kann die Rollenanordnung bevorzugt an dem Maschinenrahmen angeordnet sein.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. It can the Roller assembly preferably be arranged on the machine frame.
Bei einer solchen Ausführungsform kann es in Kombination mit dem wenigstens einen verschiebbaren Stützbein eine dritte definierte Stellung des Maschinenuntergestells geben, die sogenannte Transport- bzw. Trolleystellung, in der eines oder zwei verschiebbare Stützbeine wie auch die anderen verschwenkbaren Stützbeine bereits aus der Betriebsstellung in die Lagerstellung gebracht wurde bzw. wurden, jedoch noch nicht in den Aufnahmeraum eingeschoben ist bzw. sind. Dieses Stützbein bzw. diese Stützbeine können dann, ähnlich wie bei einem Koffertrolley, als Haltegriff zum Führen des Maschinenuntergestells genutzt werden. Die Rollenanordnung kann dabei beispielsweise in der Nähe der anderen beiden Stützbeinlagerstellen an dem Maschinenrahmen angeordnet sein.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.
Weiterhin kann vorgesehen sein, dass der Maschinenrahmen eine Grundplatte umfasst, die in der Betriebsstellung des Maschinenuntergestells als Auflagefläche für ein zu bearbeitendes Werkstück genutzt werden kann. Diese Grundplatte kann insbesondere über den Maschinenrahmen seitlich überstehen, d. h. in ihren Grundabmessungen breiter und tiefer sein als der diese unterstützende Maschinenrahmen. Insbesondere bei einer solchen Ausführungsform kann es weiter vorteilhaft sein, dass die Stützbeine unabhängig voneinander verschwenkbar sind und die Verschwenkachsen, um die die Stützbeine verschwenkbar sind, geneigt zueinander angeordnet sind. Auf diese Weise ist es möglich, die in der Betriebsstellung des Maschinenuntergestells durch die Stützbeine aufgespannte Aufstandsfläche der Stützbeine zu vergrößern und somit eine bessere Stabilität des Maschinenuntergestells zu gewährleisten.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. In particular, this base plate can protrude laterally beyond the machine frame, ie be wider and deeper in its basic dimensions than the machine frame supporting it. In particular, in such an embodiment, it may be further advantageous 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, in the operating position of the machine undercarriage by the Support legs spanned footprint of the support legs to increase and thus to ensure better stability of the machine undercarriage.
Es kann ferner vorgesehen sein, dass die Stützbeine in der Betriebsstellung und/oder in der Lagerstellung mittels eines Sicherungsmechanismus in ihrer Stellung gegen ein Verschwenken gesichert werden können. Zudem kann vorgesehen sein, dass bei einer Ausführungsform, in der wenigstens ein verschwenkbares und zugleich relativ verschiebbares Stützbein vorgesehen ist, der Sicherungsmechanismus auch dazu dienen kann, dass wenigstens eine schwenkbare und verschiebbare Stützbein zusätzlich gegen ein relatives Verschieben zu sichern. Bei einer Koppelung einer Sicherung gegen ein Verschwenken und einer Sicherung gegen ein Verschieben (translatorische Bewegung) kann beispielsweise der Sicherungsmechanismus auch derart ausgebildet sein, dass eine Verschiebung des jeweiligen Stützbeins nur in bestimmten Winkellagen des Stützbeins vorgesehen ist, z.B. nur in einer ausgeschwenkten Stellung, in der das Stützbein zur Abstützung des Maschinenrahmens dient wird eine translatorische Verschiebung des Stützbeins relativ zu dem Maschinenrahmen durch den Sicherungsmechanismus verhindert.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. For example, when coupling a securing device against pivoting and securing against displacement (translational movement), the securing mechanism can also be designed such that displacement of the respective supporting leg is provided only in certain angular positions of the supporting leg, e.g. only in a pivoted position in which 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.
Der Sicherungsmechanismus kann eine Anzahl von Sicherungsteilen umfassen, von denen wenigstens ein Sicherungsteil fest mit dem Maschinenrahmen verbunden ist (Rahmensicherungsteil) und mit wenigstens einem korrespondierenden Sicherungsteil sichernd zusammenzuwirken vermag, das fest mit einem der Stützbeine verbunden istThe securing mechanism may comprise a number of securing parts, of which at least one securing part is fixedly connected to the machine frame (frame securing part) and cooperating with at least one corresponding securing part, which is fixedly connected to one of the supporting legs
(Stützbein-Sicherungsteil). Dabei kann eines der Sicherungsteile oder der korrespondierenden Sicherungsteile (d.h. das Rahmensicherungsteil oder das Stützbein-Sicherungsteil) beispielsweise einen Sicherungsvorsprung umfassen, der in ein als Ausnehmung gebildetes anderes Sicherungsteil (d.h. Stützbein-Sicherungsteil oder das das Rahmensicherungsteil) sichernd einzugreifen vermag. Alternative Ausführungsformen sind jedoch ebenfalls denkbar, beispielsweise dass das Rahmensicherungsteil und das Stützbein-Sicherungsteil als zwei Vorsprünge ausgebildet sind, die sich sichernd aneinander abzustützen vermögen.(Supporting 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.
Der Sicherungsvorsprung kann beispielsweise an einem manuell betätigbaren Hebel oder dergleichen angeordnet sein und durch Betätigung des Hebels außer Eingriff oder in Eingriff mit der Ausnehmung oder dem jeweils anderen Vorsprung gebracht werden. Weiterhin kann es günstig sein, eines der Sicherungsteile elastisch in Richtung zu der sichernden Position vorzuspannen, beispielsweise mit Hilfe eines Federelements.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.
Schließlich kann der Sicherungsmechanismus eine Anzahl von Sicherungsanschlägen umfassen, die an dem Maschinenrahmen fest angebracht sind und ein Verschwenken der Stützbeine in nur eine vorgegebene Verschwenkrichtung erlauben oder den möglichen Schwenkwinkel zumindest einseitig begrenzen. Hierdurch wird für den Benutzer, der möglicherweise mit anderen klappbaren Maschinenuntergestellen aus dem Stand der Technik vertraut war, die Bedienung des erfindungsgemäßen Maschinenuntergestells erleichtert, da eine Fehlbedienung (Einklappen der Stützbeine in die falsche Richtung) hierdurch ausgeschlossen werden kann. Weiterhin wird durch Vorsehen derartiger Sicherungsanschläge die Stabilität des Maschinenuntergestells insbesondere in der Betriebsstellung zusätzlich erhöht.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 direction or limit the possible pivot angle at least one side. This makes it easier for the user, who was possibly familiar with other folding machine bases of the prior art, the operation of the machine undercarriage according to the invention, as a malfunction (folding the support legs in the wrong direction) thereby can be excluded. Furthermore, by providing such safety stops, the stability of the machine undercarriage is additionally increased, in particular in the operating position.
Die vorliegende Erfindung wird nachfolgend unter Bezugnahme auf die beigefügten Figuren detaillierter erläutert. In den Figuren sind drei bevorzugte Ausführungsformen der Erfindung gezeigt, wobei einzelne Merkmale miteinander kombiniert sind. Der Fachmann wird jedoch die einzelnen Merkmale für sich genommen betrachten und gegebenenfalls zu anderen sinnvollen Kombinationen zusammenfügen können.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.
Es zeigen schematisch:
- 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.
- 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 den Figuren sind unterschiedliche beispielshafte Ausführungsformen eines erfindungsgemäßen Maschinenuntergestells gezeigt. Dabei betreffen die
Die
Ferner sind vier Seitenteile 20b an den Streben 20a des Maschinenrahmens 20 angeordnet, die den Maschinenrahmen 20 in der gezeigten Ausführungsform seitlich abschließen. In einer alternativen Ausgestaltungsvariante kann jedoch selbstverständlich auch auf diese Seitenteile 20b verzichtet werden.Furthermore, four
Die Streben 20a begrenzen einen Aufnahmeraum im Inneren des Maschinenrahmens 20, in dem Komponenten einer daran angebrachten Werkzeugmaschine, wie beispielsweise der Antrieb, geschützt aufgenommen werden können. In der gezeigten Ausführungsform ist in der
Die Grundplatte 24 dient im Betrieb der Werkzeugmaschine dazu, zu bearbeitende Werkstücke abzustützen. Dementsprechend weist die Grundplatte 24 im Bereich des Sägeblatts 62 der Tischkreissäge eine definierte schlitzförmige Ausnehmung 26 auf, durch die sich das Sägeblatt 62 im Betrieb der Werkzeugmaschine zumindest teilweise erstrecken kann. Des Weiteren sind auf der Grundplatte 24 verschiebbare Anschläge 28a und 28b vorgesehen, die eine Anlagefläche für das zu bearbeitende Werkzeug bilden können.The
Schließlich ist an dem Maschinenrahmen 20 eine Rollenanordnung mit zwei Rollen 22 angebracht, welche zum rollenden Transport der an dem Maschinenuntergestell 10 angeordneten Werkzeugmaschine dienen können.Finally, a roller assembly with two
Auf weitere an dem Maschinenrahmen 20 angebrachte Details, wie beispielsweise eine Kabelhalterung sowie Betätigungseinheiten zur Betätigung (Ein- und Ausschalten sowie Steuern) der Tischkreissäge soll in dem Zusammenhang mit der vorliegenden Erfindung nicht näher eingegangen werden.On further attached to the
Die Stützbeine 30 sind in der in der
Wie nachfolgend anhand der unterschiedlichen Stellungen des Maschinenuntergestells näher erläutert wird, sind die Stützbeine 30 über Gelenkverbindungen 32 und 34 verschwenkbar an dem Maschinenrahmen 20 gelagert. Dabei unterscheiden sich in der ersten Ausführungsform der vorliegenden Erfindung die Gelenkverbindungen 32 und 34 in der Weise voneinander, dass durch die Gelenkverbindungen 34 zusätzlich zu einer Verschwenkbarkeit der Stützbeine 30 relativ zu dem Maschinenrahmen 20 auch eine translatorische Verschiebbarkeit der Stützbeine 30 relativ zu dem Maschinenrahmen 20 bereitgestellt wird.As will be explained in more detail below with reference to the different positions of the machine undercarriage, the
Die unterschiedlichen Stellungen des erfindungsgemäßen Maschinenuntergestells sind in den
Soll nun das Maschinenuntergestell in die Betriebsstellung der
In den
Die zweite Ausführungsvariante der
Wie in den Figuren, insbesondere in den
Die Gelenke 132 können zwei Gelenkteile umfassen, die gemeinsam eine erste Aufnahme für die Rahmenstrebe 120a bilden, an der sie angeordnet sind, sowie eine zweite Aufnahme für das zu befestigende Stützbein. Die Stützbeine können auf unterschiedliche Weise an den Gelenken 132 befestigt werden, beispielsweise kann die Aufnahme sich zunehmend verjüngen, so dass ein eingestecktes Stützbein durch Reibung in der Aufnahme gehalten wird. Alternative Befestigungsvarianten, wie durch Form- oder Stoffschluss sind ebenfalls denkbar.The hinges 132 may comprise two hinge parts, which together form a first receptacle for the
Weiterhin können im Bereich der ersten Aufnahme Mittel vorgesehen sein, die ein möglichst reibungsarmes Verschwenken des jeweiligen Gelenks 132 relativ zu der Rahmenstrebe 120a ermöglichen, wie z.B. ein Gleitlagerring oder dergleichen. Schließlich kann im Bereich der zweiten Aufnahme ein Sicherungsmechanismus bzw. eine Sicherungsanordnung 150 zur Sicherung des jeweiligen Gelenks in wenigstens einer Stellung relativ zu der Rahmenstrebe 120a vorgesehen sein.Furthermore, means may be provided in the region of the first receptacle, which enable pivoting of the respective joint 132 relative to the
Die in der
Damit das Maschinenuntergestell eine zuverlässige und sichere Abstützung eines in der Betriebsstellung zu bearbeitenden Werkstücks bereitstellen kann, ist zudem die Sicherungsanordnung 150 vorgesehen, welche bei den Gelenkverbindungen 132 ein unerwünschtes Verschwenken der Stützbeine 130 relativ zu dem Maschinenrahmen 120 verhindert und bei den Gelenkverbindungen 134 neben einem unerwünschten Verschwenken zusätzlich noch ein unerwünschtes Verschieben der Stützbeine 130 relativ zu dem Maschinenrahmen 120 unterbindet.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
Eine solche Sicherungsanordnung 150 kann beispielsweise durch einen verlagerbaren Rastbolzen oder dergleichen gebildet sein, der zur Sicherung gegen eine unerwünschte Verschwenkbewegung mit einem korrespondierenden Sicherungselement an der zugehörigen Rahmenstrebe 120a in Eingriff bringbar ist. Ein solches korrespondierendes Sicherungselement kann beispielsweise eine Ausnehmung, eine Vertiefung oder einen Gegenanschlag umfassen. Das Sicherungselement kann unmittelbar an der Rahmenstrebe 120a angeordnet sein oder an einem zusätzlich damit fest verbundenen Teil, wie einem Rastblech. Weiterhin kann der verlagerbare Rastbolzen einen Anschlag bilden und dadurch eine unerwünschte translatorische Bewegung der Stützbeine relativ zu dem Gelenk 134 verhindern.Such a securing
In einer denkbaren Ausführungsvariante kann ein Rasthebel mit einem zugehörigen Rastbolzen im Bereich der zweiten Aufnahme des Gelenks 132 oder 134 vorgesehen sein, der sichernd in eine Ausnehmung an der zugehörigen Rahmenstrebe 120a einzugreifen vermag, um das Gelenk 132 oder 134 in seiner Stellung zu fixieren. Der gleiche Rastbolzen oder ein weiterer Rastbolzen kann als Anschlag für das Stützbein 130 in der zweiten Aufnahme des Gelenks 134 dienen und dieses in seiner ausgefahrenen Stellung halten. Zum Lösen der Sicherungsanordnung 150 kann der Hebel einfach in der Weise bewegt werden, dass der Bolzen aus dem jeweiligen Eingriff gelöst wird, so dass dieser eine Bewegung des Gelenks 132 oder 134 relativ zu der Rahmenstrebe 120a und/oder des Stützbeins 130 relativ zu der zugehörigen Gelenkverbindung 134 ermöglicht. Besonders bevorzugt kann die Sicherungsanordnung 150 zusätzlich ein elastisches Element umfassen, das das wie auch immer geartete Sicherungsmittel in einer sichernden Stellung vorspannt.In a conceivable embodiment, a locking lever may be provided with an associated locking pin in the region of the second receptacle of the joint 132 or 134 which is capable of lockingly engaging in a recess on the associated
Die
Der Maschinenrahmen 220 der dritten Ausführungsform umfasst ebenfalls eine Grundplatte 224, von der sich in der Art eines Tisches vier Rahmenstreben 220a wie Beine nach unten erstrecken. Zur Stabilisierung sind zusätzliche Stützstreben 254 vorgesehen, welche wie nachfolgend erläutert wird auch als Führungsschienen für die einschiebbaren Stützbeine dienen können.The
Die klappbaren Stützbeine 230 sind in dieser Ausführungsvariante allesamt nicht nur gelenkig, d. h. relativ zu diesem verschwenkbar, mit dem Maschinenrahmen 220 verbunden, sondern zudem auch verschiebbar an diesem angebracht. Dabei weist jede der beinartigen Stützstreben bzw. Beinstrebe 220a des Maschinenrahmens 220 eine Ausnehmung 240 (strichliniert angedeutet in der
Die translatorische Verschiebbarkeit der Stützbeine 230 wird durch zwei Anschläge 250 und 252 an den Stützbeinen 230 begrenzt. Der erste im Aufnahmeraum angeordnete Anschlag 250 ist dabei durch ein separates Element gebildet, welches über eine Gelenkverbindung 234 mit dem zugehörigen Stützbein 230 verbunden ist. Der Anschlag begrenzt zum einen die Auszugsbewegung des jeweiligen Stützbeins 230 aus dem Aufnahmeraum des Maschinenrahmens 220. Weiterhin kann der Anschlag 250 jedoch auch als Gleitfuß dienen, der in der Führungsschiene 254 geführt ist.The translational displaceability of the
Die Gelenkverbindung 234 umfasst dabei im Wesentlichen ein Langloch 234b, in welchem ein Lagerbolzen 234a drehbar und verlagerbar aufgenommen ist. Dabei kann der Lagerbolzen 234a fest mit dem Stützbein 230 verbunden sein und das Langloch 234b dem Anschlagselement 250 zugeordnet sein. Zudem kann die Gelenkverbindung 234 zwei Gelenkteile umfassen, den Beinhalter und das Beingelenk, welche an einem Ende jeweils mit dem Stützbein 230 oder dem Anschlag 250 fest verbunden sind. An dem jeweiligen anderen Ende der Gelenkteile ist das Langloch 234b oder der darin aufgenommene Lagerbolzen 234a ausgebildet.The articulated
Wird nun eine Stützbein 230 durch die Ausnehmung 240 so weit herausgezogen, bis der Anschlag 250 an der Innenseite der Beinstrebe 220a anschlägt, so ragt die Gelenkverbindung 234 mit dem Lagerbolzen 234a und dem zugehörigen Langloch 234b bereits auf der anderen Seite der Stützstrebe 220a hervor, so dass das Stützbein 230 relativ zu dem Anschlag 250 und somit auch zu dem Maschinenrahmen 220 verschwenkt werden kann (vergleiche
Die Gelenkverbindung 234 liegt in der ausgeklappten Stellung der Stützbeine (vergleiche
Die Anlagefläche an der Außenseite des Maschinenrahmens 220 sowie die Ausrichtung des Langlochs 234b sind ebenfalls derart gewählt, dass ein Verschwenken des zugehörigen Stützbeins 230 nur in einer solchen Position möglich ist, in der der Lagerbolzen 234a an dem in Figur 5c oberen Ende des Langlochs 234b anliegt. Eine solche Stellung des Lagerbolzens 234a bezüglich des Langlochs 234b kann nur dadurch erreicht werden, dass das Maschinenuntergestell angehoben wird oder in eine andere Position (vergleichbar mit der Position in der
Dabei lässt sich das Stützbein 230 so lange in den Aufnahmeraum einschieben, bis der zweite Anschlag 252 an der Außenseite des Maschinenrahmens 220 zur Anlage kommt. Wie in
In eingeklappter und eingeschobener Stellung dienen die Stützbeine 230 aufgrund ihrer einseitigen Führung über die Stützstrebe 254 und den Anschlag 250 zudem als zusätzlicher Schutz der innerhalb des Aufnahmeraums aufgenommenen Werkzeugmaschinen-Komponenten.In the retracted and retracted position, the
Claims (12)
wobei wenigstens eines der Stützbeine (30; 130) mittels einer Gelenkverbindung (34; 134) an dem Maschinenrahmen (20; 120) gelagert ist, die neben der Verschwenkbarkeit des Stützbeins (30; 130) zudem eine translatorische Verschiebung des wenigstens einen Stützbeins (30; 130) relativ zu dem Maschinenrahmen (20; 120) ermöglicht.Machine undercarriage (10; 110) according to claim 1,
wherein at least one of the support legs (30; 130) is mounted on the machine frame (20; 120) by means of a hinge connection (34; 134) which, in addition to the pivotability of the support leg (30; 130), also translates the at least one support leg (30 130) relative to the machine frame (20; 120).
wobei die Gelenkverbindung (34; 134; 234) wenigstens einen ersten Aufnahmebereich umfasst, durch den sich eine Rahmenstrebe (20a; 120a; 220a) des Maschinenrahmens (20; 120; 220) zu erstrecken vermag, sowie einen zweiten Aufnahmebereich durch den sich ein Stützbein (30; 130; 230) zu erstrecken vermag.Machine undercarriage (10; 110; 210) according to one of claims 2 or 3,
wherein the articulated connection (34; 134; 234) comprises at least one first receiving region through which a frame strut (20a; 120a; 220a) of the machine frame (20; 120; 220) and a second receiving area through which a support leg (30; 130; 230) is able to extend.
wobei das Maschinenuntergestell (10; 110; 210) ferner eine Rollenanordnung (22; 122; 222) zum Rollen des Maschinenuntergestells (10; 110; 210) auf dem Untergrund aufweist.Machine undercarriage (10; 110; 210) according to one of claims 1 to 4,
wherein the machine base (10; 110; 210) further comprises a roller assembly (22; 122; 222) for rolling the machine base (10; 110; 210) on the ground.
wobei die Stützbeine (30; 130; 230) unabhängig voneinander verschwenkbar sindMachine undercarriage (10; 110; 210) according to one of claims 1 to 5,
wherein the support legs (30; 130; 230) are independently pivotable
wobei die Verschwenkachsen, um die die Stützbeine (10; 110; 210) verschwenkbar sind, geneigt zueinander angeordnet sind.Machine undercarriage (10; 110; 210) according to one of claims 1 to 6,
wherein the pivot axes about which the support legs (10; 110; 210) are pivotable are arranged inclined relative to each other.
wobei die Stützbeine in der Betriebsstellung und/oder der Lagerstellung mittels eines Sicherungsmechanismus (150) in ihrer Stellung gegen ein Verschwenken und/oder gegen ein Verschieben gesichert werden können.Machine undercarriage (10; 110; 210) according to one of claims 1 to 7,
wherein the support legs in the operating position and / or the storage position by means of a securing mechanism (150) can be secured in its position against pivoting and / or against displacement.
wobei der Sicherungsmechanismus die Stützbeine abhängig von ihrer Winkellage relativ zu dem Maschinen gegen ein Verschieben zu sichern oder für ein Verschieben freizugeben vermag.Machine undercarriage (10; 110; 210) according to claim 8,
the securing mechanism depending on the support legs its angular position relative to the machine to secure against displacement or release for a move is able.
wobei der Sicherungsmechanismus (150) eine Anzahl von Sicherungsteilen umfasst, von denen wenigstens ein Sicherungsteil fest mit dem Maschinenrahmen (20; 120; 220) verbunden ist und mit wenigstens einem korrespondierenden Sicherungsteil sichernd zusammenzuwirken vermag, das fest mit einem der Stützbeine (30; 130; 230) verbunden ist.Machine undercarriage (10; 110; 210) according to claim 8 or 9,
wherein the securing mechanism (150) comprises a number of securing parts, at least one securing part of which is fixedly connected to the machine frame (20; 120; 220) and capable of cooperating with at least one corresponding securing part secured to one of the supporting legs (30; ; 230) is connected.
wobei das korrespondierende Sicherungsteil einen Hebel mit einem Sicherungsvorsprung umfasst und wobei der Sicherungsvorsprung in das als Ausnehmung gebildete Sicherungsteil sichernd einzugreifen vermag.Machine undercarriage according to claim 10,
wherein the corresponding securing part comprises a lever with a securing projection and wherein the securing projection is capable of lockingly engaging in the securing part formed as a recess.
wobei der Sicherungsmechanismus eine Anzahl von Sicherungsanschlägen umfassen kann, die an dem Maschinenrahmen fest angebracht sind und ein Verschwenken der Stützbeine in nur eine vorgegebene Verschwenkrichtung erlauben oder den möglichen Schwenkwinkel zumindest einseitig zu begrenzen.Machine undercarriage according to one of claims 8 to 11,
wherein 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 direction or to limit the possible pivoting angle at least one side.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012204802A DE102012204802A1 (en) | 2012-03-26 | 2012-03-26 | Machine base |
Publications (2)
Publication Number | Publication Date |
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EP2644303A1 true EP2644303A1 (en) | 2013-10-02 |
EP2644303B1 EP2644303B1 (en) | 2017-01-04 |
Family
ID=47709958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP13154249.0A Active EP2644303B1 (en) | 2012-03-26 | 2013-02-06 | Machine subframe |
Country Status (3)
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EP (1) | EP2644303B1 (en) |
CN (1) | CN103358294A (en) |
DE (1) | DE102012204802A1 (en) |
Cited By (4)
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CN104385235A (en) * | 2014-10-28 | 2015-03-04 | 苏州速腾电子科技有限公司 | Working platform |
US10792834B2 (en) | 2017-06-05 | 2020-10-06 | Milwaukee Electric Tool Corporation | Table saw |
US11027411B2 (en) | 2018-10-24 | 2021-06-08 | Tti (Macao Commercial Offshore) Limited | Saw stand |
US11890744B2 (en) | 2020-07-31 | 2024-02-06 | Techtronic Cordless Gp | Workbench-hand truck assembly |
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DE202014101020U1 (en) * | 2014-03-07 | 2014-04-04 | Hermann Englhard | tile cutter |
CN108705161A (en) * | 2018-06-25 | 2018-10-26 | 浙江芊荷科技有限公司 | A kind of spark-erosion machine tool processing and manufacturing workbench and its manufacture working method |
CN110587827B (en) * | 2019-09-04 | 2021-11-26 | 浙江化工工程地质勘察院有限公司 | Small-size directional drilling equipment |
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Also Published As
Publication number | Publication date |
---|---|
EP2644303B1 (en) | 2017-01-04 |
DE102012204802A1 (en) | 2013-09-26 |
CN103358294A (en) | 2013-10-23 |
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