EP2208592B1 - Mitre saw with upper table and mitre saw protection - Google Patents
Mitre saw with upper table and mitre saw protection Download PDFInfo
- Publication number
- EP2208592B1 EP2208592B1 EP09015238.0A EP09015238A EP2208592B1 EP 2208592 B1 EP2208592 B1 EP 2208592B1 EP 09015238 A EP09015238 A EP 09015238A EP 2208592 B1 EP2208592 B1 EP 2208592B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- saw blade
- blade guard
- saw
- support
- locking device
- 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.)
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- 239000004033 plastic Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims 2
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000007654 immersion Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010137 moulding (plastic) Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/16—Saw benches
- B27B5/165—Convertible sawing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/29—Details; Component parts; Accessories
Definitions
- the invention relates to a chop saw with upper table with the features of the preamble of claim 1 and a saw blade protection for such a chop saw with upper table with the features of the preamble of claim 12.
- a chop saw with a top table combines the functions of a miter saw and a table saw with each other. It is therefore a kind of universal device.
- the safety regulations prescribe the use of a saw blade guard below the upper table.
- a different depth of cut when using the saw as a table saw is not realized by adjusting the circular saw blade of the saw unit, but by adjusting the upper table vertically relative to the saw unit.
- the blade guard is a one-piece plastic part, which can be removed from the workpiece support surface without tools and also be attached to it again.
- the locking device for the saw unit in the space provided for the table saw lowered sawing is a laterally arranged on the support arm of the saw unit, pivotable connecting bracket, which cooperates with a matching counterpart on the carrier in the form of a laterally projecting pin.
- the connection bracket is with a hook-like end over the Pivot pivoted and holds so the saw unit in the space provided for the table saw lowered saw position.
- the locking device can be activated and deactivated regardless of whether the blade guard is mounted or not mounted.
- Carrier in the sense of the teaching of the present invention may be all parts that form the workpiece support surface for the chop saw.
- the carrier is therefore when a turntable is provided, and the turntable, if a turntable is provided with a cantilever arm projecting forward, and the boom.
- carrier thus encloses all parts specifically mentioned herein, and the arrangement of individual parts of the locking device on the carrier means an arrangement in a suitable region of the carrier.
- the teaching is based on the problem, the known chop saw with upper table in such a way and further, that the saw for table sawing on the upper table can only be used when the blade guard is mounted.
- the construction is realized so that at least one functionally necessary part of the locking device is located on the blade guard, so that the locking device is functional in lowered for table sawing saw unit only with mounted blade guard.
- the saw blade guard If the saw blade guard is not used, it lacks a functionally necessary part of the locking device.
- the locking device is malfunctioning.
- the saw unit can not be fixed in the desired lowered sawing position.
- the actual fixation of the saw unit takes place in the lowered position for table sawing only between the carrier and the saw unit.
- the saw blade protection only plays a role insofar as it must functionally activate with the actuating element arranged or formed on it a functionally necessary adjustment part of the locking device, which itself is assigned to the carrier or the saw unit, in order then to render the locking device fully functional.
- the locking device is formed entirely or predominantly on the saw blade protection or firmly attached. So it is the saw blade protection, not assigned to the carrier.
- the locking device connects in two directions, namely on the one hand to the carrier and on the other hand to the saw unit. Only when both connections are made, the sawing unit is ready and fixed on the table saw carrier on the top table. If the saw blade guard is missing, the locking device is missing, and the saw unit can not be fixed in the desired lowered sawing position.
- the blade guard made of plastic, preferably a thermoplastic material.
- the carrier is preferably a reference to the turntable of the carrier, most preferably a reference to the cantilever arm of the turntable of the carrier meant.
- the invention also provides a blade guard as such with the features of the invention. This is the subject of claim 12.
- a support 1 which forms a workpiece support surface 2 for the chop saws.
- the rear end of the workpiece support surface 2 is formed by a stop rail 3, on which a workpiece, such as a wooden strip, can be created.
- a holder 4 is mounted, which lies behind the rear stop rail 3. Attached to the holder 4 above the carrier 1 is a saw unit 5.
- the illustrated and preferred embodiment shows on the support 1 a recessed turntable 6 with a forward projecting boom 7 and a submerged slot 8, in the sawing the edge / sprocket of a circular saw blade 9 of the saw unit 5 occurs.
- the boom 7, the turntable 6 in the carrier 1 have a smaller diameter than he would have to take advantage of the maximum cutting length of the circular saw blade 9.
- the total weight of the chop saw is relatively small despite the use of a turntable 6 for the execution of miter cuts.
- the part of the carrier 1 is referred to, which is shown in the drawing at the appropriate location, preferably then the turntable 6 of the carrier 1, in particular the boom 7 of the turntable 6 of the Carrier 1.
- Fig. 1 can be seen on the right sawing unit 5 an operating handle 10th
- Fig. 1 Saw shown is initially a chop saw, in which the saw unit 5 about a transverse axis 11 from a raised rest position, the in Fig. 1 It can be seen in a lowered sawing position in Fig. 4 can be seen, and is pivoted vice versa to perform a Kapp mustard.
- the saw unit 5 is normally biased in the direction of the rest position, ie upwards, in particular by a spring. As a result, the saw unit 5, if you let go, by itself back in the Fig. 1 shown raised rest position back.
- the special thing about the in Fig. 1 saw is the second function of a table saw.
- This is realized by an upper table 12, which is arranged above the saw unit 5, fixedly connected to the saw unit 5 and thus pivotable together with the saw unit 5 about the transverse axis 11.
- the upper table 12 is adjustable in height relative to the saw unit 5, by means of the table support thirteenth
- Fig. 2 initially shown is a removable and here and after preferred teaching without tools mountable and dismountable blade guard 15. This is at the in Fig. 1 illustrated raised rest position of the saw unit 5 is placed on the turntable 6 and the boom 7 in the region of the immersion slot 8. With his in Fig. 2 right rear projection 16 shown, the blade guard 15 in the in Fig. 1 inserted rear left intake manifold 17 and thus pre-fixed on the workpiece support surface 2. If now the saw unit 5 from the in Fig. 1 shown raised rest position in his in Fig. 4 shown lowered shegeung pivoted so enters the Fig. 1 recognizable ring gear of the circular saw blade 9 in the in Fig. 2 and 3 recognizable immersion slot 18 of the blade guard 15 a. The edge of the circular saw blade 9 is then covered safe to touch
- Fig. 2 shows a classic, the prior art saw blade 15, which has no additional function.
- Fig. 3 shows a modified according to the invention blade guard 15. Basically, it is first of all important that the locking device 14 is functional in lowered for the table saw saw unit 5 only with mounted blade guard 15. According to a preferred teaching, at least one functionally necessary part of the locking device 14 is arranged on the saw blade guard 15 for this purpose.
- Fig. 3 shows an embodiment with a saw blade 15, in which the locking device 14 is fixedly attached to the blade guard 15 itself. It can also be integrally formed or otherwise formed. Counterparts of the locking device 14 are of course provided on the carrier 1, on the turntable 6 and / or on the arm 7 or, on the saw unit 5.
- the locking device 14 realized in its full locking position, on the one hand, a fixed connection of the blade guard 15 to the carrier 1 and the boom 7 of the turntable 6 of the carrier 1 and on the other hand a firm connection of the blade guard 15 to the saw unit 5.
- solid means, of course, that this compound is not solvable in each case. It is fixed to allow table sawing on the top table 12. It is solvable again, with the chop saw the normal chop sawing on the workpiece support surface 2 according to Fig. 1 to carry out.
- a clip-on or snap-on shoe 19 is provided for connection to the carrier 1.
- Fig. 3 you can see shoe 19 on the bottom left Fig. 4 Recognizes that here on the boom 7 of the chop saw left and right side projecting strips 20 are provided.
- the strips 20 form counterparts for the locking device 14. Since the boom 7 is running slightly tapered to the left front, you can put the shoe 19 near the front end of the boom 7 from above on the strips 20. You push the shoe 19 then in the in Fig. 4 shown manner to the right rear, the strips 20 are positively connected to the shoe 19 into engagement and the fixed connection to the boom 7 on the turntable 6 in the carrier 1 is made.
- connection bracket 21 is present for connection to the saw unit 5.
- matching counterpart 22 is provided in the form of a pin. It can be seen on the connection bracket 21 above a recess and recognizes in Fig. 4 how the pin 22 interlocks with the recess in the connecting bracket 21
- an insertion bevel 23 is provided for the designed as a pin counterpart 22.
- connection bracket 21 On the right side of the connection bracket 21, a handle 24 can be seen, with which the connection bracket 21 can be elastically deflected to release the connection to the right.
- the pin (counterpart 22) is released from the connecting bracket 21 and the saw unit 5 can be swung up again.
- the locking device 14 is a separate plastic molding, but with the blade guard 15, which is also a plastic molding, permanently connected. In the illustrated embodiment, the locking device 14 is latched to the blade guard 15.
- the locking device 14 shows only a particularly preferred constructive solution. It is only essential that the locking device 14 is associated with their functionally essential elements of the blade guard 15 and thereby the saw unit 5 can be locked in the lowered for table sawing on the upper table 12 sawing only on the carrier 1 when the blade guard 15 is present. This function is not realized by electrical or other testing measures, but purely mechanically by the inventive assignment of the locking device 14, d. H. their functionally essential parts for saw blade 15.
- Fig. 1 to 4 have had a first embodiment of the invention for the subject.
- Fig. 5 to 7 show a second embodiment of a K invention Kagsäge.
- a common connection bracket 21 is provided for connecting the saw blade guard 15 with the saw unit 5 and with the carrier 1, more precisely the extension arm 7 on the turntable 6 of the carrier 1. This cooperates with counterparts 20 and 22 in the form of pins.
- the storage of the connecting bracket 21 is shown here as a bearing screw. Other constructions are also feasible. In particular, it will be provided that the connecting bracket 21 is mounted captive on the blade guard 15.
- the illustrated common connecting bracket 21 is designed as a double-armed swivel bracket. In principle, two individual connecting straps, which each interact with a counterpart, could also be provided.
- Fig. 6 shows an enlarged view of the position of the locking device 14 Fig. 5 , In this position, with saw blade protection 15, the saw unit 5 is held in the lowered sawing position for table sawing on the upper table 12.
- Fig. 7 shows the locking device 14 unlocked.
- the double-armed connecting bracket 21 has been pivoted away so that it is no longer in engagement with the counterparts 20, 22 in the form of undercut pins.
- the saw unit 5 can be swung up, the saw blade 15 are removed.
- Fig. 8 shows a third embodiment in which the locking device 14 according to the invention is realized in that all functionally necessary parts of the locking device 14 distributed on the carrier 1, preferably on the turntable 6, in particular on the boom 7, and on the saw unit 5 and at least one philntechnischsnotwendiges adjustment 25th the locking device 14 can be activated and deactivated and activated only when mounted blade guard 15 is functional.
- Fig. 8 combined with Fig. 9 and 10 It can be seen that here is a one-armed connecting bracket 21 is pivoted on the saw unit 5, by means of a pivot joint 24.
- the counterpart 20 in the form of an undercut pin on the boom 7 of the turntable 6 of the carrier 1.
- This Counterpart is also the adjustment part 25 of the locking device 14 at the same time.
- Fig. 9 and 10 it can be seen that the adjustment 25 / counterpart 20 from the in Fig. 9 shown functionally activated position in the in Fig. 10 illustrated functionally disabled disabled position is adjustable.
- the saw blade guard 15 is mounted in Fig. 10 he is not mounted. There, one recognizes the immersion slot 8 in the boom 7 and the circular saw blade 9.
- the connecting bracket 21 can not support the counterpart 20 in the form of a pin, because the counterpart 20 protrudes only with his head from the boom 7, no longer with the shaft smaller diameter ,
- Fig. 11 shows a view obliquely from below according to Fig. 10
- Fig. 12 shows a corresponding view obliquely from below according to Fig. 9
- Fig. 12 it can be seen that the saw blade guard 15, an actuator 26 is arranged or formed for the adjustment part 25 and that by mounting the saw blade guard 15 with the actuator 26, the adjustment member 25 is directly or indirectly brought into the activated position.
- the actuator 26 on the blade guard 15 in a recess 27 in the carrier 1, preferably in the turntable 6, in particular in the boom 7, plug-in pin, bolt, latch, hook or the like. is.
- This recess 27 can be seen in Fig. 9 and 10 ,
- the actuating element 26 on the saw blade guard 15, which here is a pin protruding downwards from the saw blade guard 15, can bring the adjusting part 25 directly into the activated position.
- the actuating element 26 brings the adjustment member 25 indirectly in the activated position.
- a transmission mechanism 28 is arranged between the actuating element 26 and the adjusting part 25.
- the transmission mechanism 28 is designed as a wedge gear with two superimposed cams.
- the pin which forms the actuating element 26 enters the recess 27 in the extension arm 7 and rotates the lower cam of the transfer mechanism 28 Fig. 12 counterclockwise.
- the wedge surfaces of the two cams slide on each other.
- the upper cam is not driven in rotation. But it is pushed up.
- the pin-like adjustment part 25 is arranged.
- the head of the head of the counterpart 20 sits.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
Description
Die Erfindung betrifft eine Kappsäge mit Obertisch mit den Merkmalen des Oberbegriffs von Anspruch 1 sowie einen Sägeblattschutz für eine solche Kappsäge mit Obertisch mit den Merkmalen des Oberbegriffs von Anspruch 12.The invention relates to a chop saw with upper table with the features of the preamble of
Eine Kappsäge mit einem Obertisch vereint die Funktionen einer Kapp- und Gehrungssäge und einer Tischkreissäge miteinander. Es handelt sich also um eine Art Universalgerät. Um für das Tischsägen auf dem Obertisch jede Verletzungsgefahr durch den freiliegenden Zahnkranz des Kreissägeblattes des Sägeaggregates unterhalb des Obertisches auszuschließen, schreiben die Sicherheitsvorschriften den Einsatz eines Sägeblattschutzes unterhalb des Obertisches vor. Vor dem Absenken des Sägeaggregates in die Sägestellung für das Tischsägen auf dem Obertisch wird der Sägeblattschutz auf der Werkstückauflagefläche des Trägers im Bereich des Eintauchschlitzes für den Rand des Kreissägeblattes positioniert, Dann wird das Sägeaggregat abgesenkt und der Zahnkranz am Rand des Kreissägeblattes tritt in den Sägeblattschutz ein. Er ist dann berührungssicher abgedeckt. In dieser Stellung wird das Sägeaggregat mittels der Verriegelungseinrichtung am Träger verriegelt. So ist die Säge insgesamt wie eine Tischkreissäge einsetzbar.A chop saw with a top table combines the functions of a miter saw and a table saw with each other. It is therefore a kind of universal device. To preclude any risk of injury due to the exposed sprocket of the circular saw blade of the saw unit below the upper table for table sawing on the upper table, the safety regulations prescribe the use of a saw blade guard below the upper table. Before lowering the saw unit in the sawing position for table sawing on the upper table, the blade guard is positioned on the workpiece support surface of the carrier in the immersion slot for the edge of the circular saw blade, then the saw unit is lowered and the ring gear on the edge of the circular saw blade enters the saw blade protection , He is then covered safe to touch. In this position, the saw unit is locked by means of the locking device on the carrier. So the saw can be used like a table saw.
Eine unterschiedliche Schnittiefe bei Nutzung der Säge als Tischkreissäge wird nicht durch Verstellung des Kreissägeblattes des Sägeaggregates realisiert, sondern durch Verstellung des Obertisches vertikal gegenüber dem Sägeaggregat.A different depth of cut when using the saw as a table saw is not realized by adjusting the circular saw blade of the saw unit, but by adjusting the upper table vertically relative to the saw unit.
Bei der bekannten Kappsäge mit Obertisch, von der die Erfindung ausgeht (EU-Geschmacksmuster 000 221 429; metabo "HAUPTKATALOG 2008/2009", Abschnitt "
Bei der zuvor erläuterten, bekannten Kappsäge mit Obertisch ist die Verriegelungseinrichtung aktivierbar und deaktivierbar unabhängig davon, ob der Sägeblattschutz montiert oder nicht montiert ist.In the previously explained, known chop saw with upper table, the locking device can be activated and deactivated regardless of whether the blade guard is mounted or not mounted.
Träger im Sinne der Lehre der vorliegenden Erfindung können alle Teile sein, die die Werkstückauflagefläche für das Kappsägen bilden. Zum Träger gehört also dann, wenn ein Drehteller vorgesehen ist, auch der Drehteller, wenn ein Drehteller mit einem nach vorne vorspringenden Auslegerarm vorgesehen ist, auch der Auslegerarm. Der Begriff "Träger" umschließt also alle hier speziell erwähnten Teile und die Anordnung von einzelnen Teilen der Verriegelungseinrichtung am Träger bedeutet eine Anordnung in einem passenden Bereich des Trägers.Carrier in the sense of the teaching of the present invention may be all parts that form the workpiece support surface for the chop saw. The carrier is therefore when a turntable is provided, and the turntable, if a turntable is provided with a cantilever arm projecting forward, and the boom. The term "carrier" thus encloses all parts specifically mentioned herein, and the arrangement of individual parts of the locking device on the carrier means an arrangement in a suitable region of the carrier.
Der Lehre liegt das Problem zugrunde, die bekannte Kappsäge mit Obertisch so auszugestalten und weiterzubilden, daß die Säge für das Tischsägen auf dem Obertisch nur dann genutzt werden kann, wenn der Sägeblattschutz montiert ist.The teaching is based on the problem, the known chop saw with upper table in such a way and further, that the saw for table sawing on the upper table can only be used when the blade guard is mounted.
Die zuvor aufgezeigte Problemstellung wird bei der Kappsäge mit Obertisch gemäß den Merkmalen des Oberbegriffs von Anspruch 1 mit den Merkmalen des kennzeichnenden Teils von Anspruch 1 gelöst.The above-indicated problem is solved in the chop saw with upper table according to the features of the preamble of
In der ersten Alternative von Anspruch 1 ist die Konstruktion so realisiert, dass mindestens ein funktionsnotwendiges Teil der Verriegelungseinrichtung sich am Sägeblattschutz befindet, so dass die Verriegelungseinrichtung bei für das Tischsägen abgesenktem Sägeaggregat nur mit montiertem Sägeblattschutz funktionstüchtig ist.In the first alternative of
Ist der Sägeblattschutz nicht eingesetzt, so fehlt es an einem funktionsnotwendigen Teil der Verriegelungseinrichtung. Die Verriegelungseinrichtung ist funktionsuntüchtig. Das Sägeaggregat kann nicht in der gewünschten abgesenkten Sägestellung fixiert werden.If the saw blade guard is not used, it lacks a functionally necessary part of the locking device. The locking device is malfunctioning. The saw unit can not be fixed in the desired lowered sawing position.
In der zweiten Alternative von Anspruch 1 ist vorgesehen, dass sich alle funktionsnotwendigen Teile der Verriegelungseinrichtung verteilt am Träger und am Sägeaggregat befinden, dass mindestens ein funktionsnotwendiges Verstellteil der Verriegelungseinrichtung aktivierbar und deaktivierbar und nur bei montiertem Sägeblattschutz funktionstüchtig aktiviert ist und dass dazu am Sägeblattschutz ein Betätigungselement für das Verstellteil angeordnet oder ausgebildet ist und durch das Montieren des Sägeblattschutzes mit dem Betätigungselement das Verstellteil direkt oder indirekt in die aktivierte Stellung gebracht wird.In the second alternative of
Hier findet die eigentliche Fixierung des Sägeaggregates in der für das Tischsägen abgesenkten Stellung nur zwischen dem Träger und dem Sägeaggregat statt. Der Sägeblattschutz spielt nur insoweit eine Rolle, als er mit dem an ihm angeordneten oder ausgebildeten Betätigungselement ein funktionsnotwendiges Verstellteil der Verriegelungseinrichtung, das selbst dem Träger oder dem Sägeaggregat zugeordnet ist, funktionstüchtig aktivieren muss, um die Verriegelungseinrichtung dann insgesamt funktionstüchtig zu machen.Here, the actual fixation of the saw unit takes place in the lowered position for table sawing only between the carrier and the saw unit. The saw blade protection only plays a role insofar as it must functionally activate with the actuating element arranged or formed on it a functionally necessary adjustment part of the locking device, which itself is assigned to the carrier or the saw unit, in order then to render the locking device fully functional.
Für die weiter konkretisierte erste Alternative ist nach Anspruch 2 vorgesehen, dass die Verriegelungseinrichtung ganz oder zum überwiegenden Teil am Sägeblattschutz ausgebildet oder fest angebracht ist. Sie ist also dem Sägeblattschutz, nicht dem Träger zugeordnet. Die Verriegelungseinrichtung verbindet in zwei Richtungen, nämlich einerseits zum Träger und andererseits zum Sägeaggregat hin. Nur wenn beide Verbindungen hergestellt sind, ist das Sägeaggregat am Träger für das Tischsägen auf dem Obertisch bereit und xiert. Fehlt der Sägeblattschutz, so fehlt die Verriegelungseinrichtung, das Sägeaggregat kann nicht in der gewünschten abgesenkten Sägestellung fixiert werden.For further concretized first alternative is provided according to
Bevorzugte Ausgestaltungen und Weiterbildungen dieser erfindungsgemäßen Kappsäge sind Gegenstand der Ansprüche 3 bis 6.Preferred embodiments and further developments of this chop saw according to the invention are the subject matter of
Bevorzugte Ausgestaltungen und Weiterbildungen der zweiten Alternative der erfindungsgemäßen Kappsäge sind dann weiter Gegenstand der Ansprüche 7 bis 10.Preferred embodiments and further developments of the second alternative of the chop saw according to the invention are then further subject matter of
Insgesamt ist es besonders zweckmäßig, wenn der Sägeblattschutz aus Kunststoff, vorzugsweise einem thermoplastischen Kunststoff, besteht.Overall, it is particularly useful if the blade guard made of plastic, preferably a thermoplastic material.
Wenn es bei der Erläuterung der Erfindung einen Bezug zum Träger gibt, dann ist damit vorzugsweise ein Bezug zum Drehteller des Trägers, äußerst vorzugsweise ein Bezug zum Auslegerarm des Drehtellers des Trägers gemeint.If there is a reference to the carrier in the explanation of the invention, then it is preferably a reference to the turntable of the carrier, most preferably a reference to the cantilever arm of the turntable of the carrier meant.
Gegenstand der Erfindung ist auch ein Sägeblattschutz als solcher mit den erfindungsgemäßen Besonderheiten. Dieser ist Gegenstand des Anspruchs 12.The invention also provides a blade guard as such with the features of the invention. This is the subject of
Im folgenden wird die Erfindung anhand einer lediglich ein bevorzugtes Ausführungsbeispiel darstellenden Zeichnung näher erläutert, In der Zeichnung zeigt
- Fig. 1
- in perspektivischer Ansicht eine Kappsäge mit Obertisch in Kappsägeposition, also ohne Sägeblattschutz,
- Fig. 2
- in perspektivischer Ansicht einen Sägeblattschutz des Standes der Technik,
- Fig. 3
- in perspektivischer Ansicht einen erfindungsgemäß modifizierten Sägeblattschutz in einer ersten Variante,
- Fig. 4
- in entsprechender perspektivischer Ansicht wie
Fig. 3 , das vordere Ende des Sägeaggregates der Kappsäge ausFig. 1 , nun abgesenkt für das Tischsägen auf dem Obertisch und mittels der Verriegelungseinrichtung am Träger verriegelt. - Fig. 5
- in einer perspektivischen Ansicht ein weiteres Ausführungsbeispiel einer Kappsäge mit Obertisch, hier in abgesenkter Stellung mit eingesetztem, erfindungsgemäßem Sägeblattschutz,
- Fig. 6
- ausschnittweise, vergrößert, den links vorne liegenden Teil des Sägeblattschutzes der Kappsäge aus
Fig. 5 , die Verriegelungseinrichtung in verriegelter Stellung, - Fig. 7
- eine
Fig. 6 entsprechender Ansicht und Darstellung die Verriegelungseinrichtung in entriegelter Stellung, - Fig. 8
- ein drittes Ausführungsbeispiel einer Kappsäge mit Obertisch in perspektivischer Ansicht, in abgesenkter Stellung, versehen mit einer erfindungsgemäßen Verriegelungseinrichtung in entriegelter Stellung,
- Fig. 9
- ausschnittweise, in vergrößerter Darstellung, die Kappsäge aus
Fig. 8 im Bereich der Verriegelungseinrichtung, ein Verstellteil der Verriegelungseinrichtung aktiviert, - Fig. 10
- eine
Fig. 9 entsprechende Darstellung, jedoch mit dem Verstellteil nicht aktiviert, - Fig. 11
- die Darstellung aus
Fig. 10 , diesen Bereich nun von links unten in den Ausleger hinein gesehen, - Fig. 12
- die Darstellung aus
Fig. 9 , jedoch nun von links unten in den Ausleger hinein gesehen.
- Fig. 1
- in a perspective view a chop saw with upper table in Kappsägeposition, ie without saw blade protection,
- Fig. 2
- in a perspective view of a blade guard of the prior art,
- Fig. 3
- 3 is a perspective view of a modified saw blade guard according to the invention in a first variant,
- Fig. 4
- in a corresponding perspective view as
Fig. 3 , the front end of the saw unit of the chop sawFig. 1 , now lowered for table sawing on the upper table and locked by means of the locking device on the carrier. - Fig. 5
- in a perspective view of another embodiment of a chop saw with upper table, here in a lowered position with inserted, according to the invention saw blade protection,
- Fig. 6
- In sections, enlarged, the left front part of the saw blade protection of the chop saw
Fig. 5 , the locking device in the locked position, - Fig. 7
- a
Fig. 6 corresponding view and representation of the locking device in the unlocked position, - Fig. 8
- A third embodiment of a chop saw with upper table in a perspective view, in a lowered position, provided with a locking device according to the invention in the unlocked position,
- Fig. 9
- excerpts, in enlarged view, the chop saw out
Fig. 8 in the region of the locking device, activates an adjusting part of the locking device, - Fig. 10
- a
Fig. 9 corresponding representation, but not activated with the adjustment, - Fig. 11
- the presentation
Fig. 10 now seen this area from the bottom left into the boom, - Fig. 12
- the presentation
Fig. 9 , but now seen from the bottom left into the boom.
Die in
Das dargestellte und bevorzugte Ausführungsbeispiel zeigt am Träger 1 einen eingelassenen Drehteller 6 mit einem nach vorne vorspringenden Auslegerarm 7 und einem Eintauchschlitz 8, in den in Sägestellung der Rand/Zahnkranz eines Kreissägeblattes 9 des Sägeaggregates 5 eintritt. Durch den Auslegerarm 7 kann der Drehteller 6 im Träger 1 einen geringeren Durchmesser haben als er haben müßte, um die maximale Schnittlänge des Kreissägeblattes 9 auszunutzen. Dadurch ist das Gesamtgewicht der Kappsäge trotz Einsatz eines Drehtellers 6 zur Ausführung von Gehrungsschnitten relativ gering.The illustrated and preferred embodiment shows on the support 1 a recessed
Nachfolgend wird dann, wenn generalisierend vom Träger 1 die Rede ist, stets der Teil des Trägers 1 bezeichnet, der in der Zeichnung an der entsprechenden Stelle dargestellt ist, vorzugsweise dann also der Drehteller 6 des Trägers 1, insbesondere der Auslegerarm 7 des Drehtellers 6 des Trägers 1.Subsequently, when generalizing of the
In
Die in
Das besondere an der in
Man kann sich anhand von
In
Im dargestellten Ausführungsbeispiel ist vorgesehen, daß die Verriegelungseinrichtung 14 in ihrer vollständigen Verriegelungsstellung einerseits eine feste Verbindung des Sägeblattschutzes 15 zum Träger 1 bzw. zum Auslegerarm 7 des Drehtellers 6 des Trägers 1 und andererseits eine feste Verbindung des Sägeblattschutzes 15 zum Sägeaggregat 5 realisiert. Fest bedeutet in diesem Sinne natürlich, daß diese Verbindung nicht jeweils lösbar ist. Sie ist fest, um das Tischsägen auf dem Obertisch 12 zu ermöglichen. Sie ist wieder lösbar, um mit der Kappsäge das normale Kappsägen auf der Werkstückauflagefläche 2 gemäß
Das hier dargestellte Ausführungsbeispiel zeigt bereits einige Lösungen, wie die Verbindung zum jeweiligen Gegenstück realisiert werden kann.The embodiment shown here already shows some solutions how the connection to the respective counterpart can be realized.
Dargestellt ist, daß zur Verbindung mit dem Träger 1 ein aufsteckbarer oder aufrastbarer Schuh 19 vorgesehen ist. In
In
Um beim Absenken des Sägeaggregates 5 in die Sägestellung bei eingesetztem Sägeblattschutz 15 mit der Verriegelungseinrichtung 14 ein selbsttätiges Einrasten des Gegenstücks 22 am Sägeaggregat 5 zu gewährleisten ist hier ferner vorgesehen, daß am Verbindungsbügel 21 eine Einführschräge 23 für das als Zapfen ausgeführte Gegenstück 22 vorgesehen ist.In order to ensure the automatic lowering of the
Rechts am Verbindungsbügel 21 erkennt man ferner einen Handgriff 24, mit dem der Verbindungsbügel 21 zum Lösen der Verbindung nach rechts elastisch ausgelenkt werden kann. Der Zapfen (Gegenstück 22) kommt dabei vom Verbindungsbügel 21 frei und das Sägeaggregat 5 kann wieder hochgeschwenkt werden.On the right side of the
Aus
Wenn der Auslegerarm 7 am Drehteller 6 nicht nach links unten in
Insgesamt gibt es für die konstruktive Gestaltung der Verriegelungseinrichtung 14 viele Möglichkeiten. Das dargestellte Ausführungsbeispiel zeigt nur eine besonders bevorzugte konstruktive Lösung. Wesentlich ist lediglich, daß die Verriegelungseinrichtung 14 mit ihren funktionswesentlichen Elementen dem Sägeblattschutz 15 zugeordnet ist und dadurch das Sägeaggregat 5 in der für das Tischsägen auf dem Obertisch 12 abgesenkten Sägestellung nur am Träger 1 verriegelt werden kann, wenn der Sägeblattschutz 15 vorhanden ist. Diese Funktion wird nicht durch elektrische oder anderweitige Prüfungsmaßnahmen verwirklicht, sondern rein mechanisch durch die erfindungsgemäße Zuordnung der Verriegelungseinrichtung 14, d. h. ihrer funktionswesentlichen Teile zum Sägeblattschutz 15.Overall, there are many possibilities for the structural design of the
Für alle Ausführungsbeispiele gelten zunächst generell, soweit wie möglich, die gleichen allgemeinen Erläuterungen. Für gleiche Teile werden daher auch gleiche Bezugszeichen verwendet. Im übrigen gilt auch hier, daß Teil des Trägers 1 im konkreten Ausführungsbeispiel ein Drehteller 6 ist, der seinerseits einen Auslegerarm 7 aufweist. Wenn insoweit auf den Träger 1 hingewiesen wird, sind daher insbesondere auch der Drehteller 6 und der Auslegerarm 7 gemeint, sofern solche Teile vorhanden sind.For all embodiments, generally, as far as possible, the same general explanations apply. For identical parts, therefore, the same reference numerals are used. Incidentally, here too applies that part of the
Auch bei dem Ausführungsbeispiel von
Die Lagerung des Verbindungsbügels 21 ist hier als Lagerschraube dargestellt. Andere Konstruktionen sind ebenfalls realisierbar. Insbesondere wird man vorsehen, daß der Verbindungsbügel 21 am Sägeblattschutz 15 unverlierbar angebracht ist.The storage of the connecting
Der dargestellte gemeinsame Verbindungsbügel 21 ist als doppelarmiger Schwenkbügel ausgeführt. Grundsätzlich könnten auch zwei einzelne Verbindungsbügel, die jeweils mit einem Gegenstück zusammenwirken, vorgesehen sein.The illustrated common connecting
Man erkennt die Hinterschneidung an den Gegenstücken 20, 22, die dazu führt, daß auch eine seitliche Fixierung des Sägeblattschutzes 15 gegeben ist. Dieser kann also nicht seitlich verschoben werden.It can be seen the undercut on the
Aus
Aus
In
Das Betätigungselement 26 am Sägeblattschutz 15, das hier ein vom Sägeblattschutz 15 nach unten abragender Zapfen ist, kann das Verstellteil 25 direkt in die aktivierte Stellung bringen.The
Im dargestellten und bevorzugten Ausführungsbeispiel ist jedoch vorgesehen, daß das Betätigungselement 26 das Verstellteil 25 indirekt in die aktivierte Stellung bringt. Hier erfolgt eine Umlenkung von der Bewegungsrichtung des Betätigungselementes 26 in die Bewegungsrichtung des Verstellteils 25 um etwa 90°. Dazu ist zwischen dem Betätigungselement 26 und dem Verstellteil 25 eine Übertragungsmechanik 28 angeordnet. Man erkennt diese in
Im dargestellten und bevorzugten Ausführungsbeispiel ist die Übertragungsmechanik 28 als Keilgetriebe mit zwei aufeinander laufenden Kurvenscheiben ausgeführt.In the illustrated and preferred embodiment, the
Wird der Sägeblattschutz 15 auf den Auslegerarm 7 und den Drehteller 6 aufgesetzt, so tritt der Zapfen, der das Betätigungselement 26 bildet, in die Ausnehmung 27 im Auslegerarm 7 ein und dreht die untere Kurvenscheibe der Übertragungsmechanik 28 in
In der in
Man erkennt auch hier wieder, daß das aktivierte Verstellteil 25 vom in Eingriff damit stehenden Verbindungsbügel 21 in der aktivierten Stellung fixiert wird.It can also be seen here again that the activated adjusting
Claims (15)
- Circular cross-cut saw with upper table with a support (1), which forms a workpiece support surface (2) for crosscutting, and preferably a rotary disk (6), in particular with an extension arm (7),
a sawing unit (5) mounted above the support (1) by means of a holding device (4) with a circular saw blade (9), which can be pivoted about a transversal axis (11) from a raised neutral position into a lowered sawing position and vice versa,
an upper table (12) mounted above the sawing unit (5), which is connected to the sawing unit (5) in a fixed position but preferably with adjustable height and which can be pivoted about the transversal axis (11),
a removable saw blade guard (15), which can preferably be mounted and removed without tools, and which, when mounted, is positioned on the workpiece support surface (2) when the sawing unit (5) is lowered for table cutting and covers the edge of the circular saw blade (9) of the sawing unit (5) safely against touching, and
a locking device (14) for locking the sawing unit (5) in the sawing position on the support (1) for table sawing on the upper table (12),
characterised in that at least one functional part of the locking device (14) is located on the saw blade guard (15), so that the locking device (14) can only operate with the saw blade guard (15) mounted when the sawing unit (5) is lowered for table sawing, or
that all functional parts of the locking device (14) are distributed on the support (1) and on the sawing unit (5), that at least one functional adjustment part (25) of the locking device (14) can be activated and deactivated and is only functionally activated when the saw blade guard (15) is mounted and that, in addition, an actuator (26) for the adjustment part (25) is arranged or formed on the saw blade guard (15) and the adjustment part (25) is brought directly or indirectly into the activated position when the saw blade guard (15) is mounted with the actuator (26). - Circular cross-cut saw according to claim 1, characterised in that the locking device (14) is wholly or for the most part formed or firmly fixed on the saw blade guard (15) and, in its fully locked position, when acting in combination with counter pieces (20, 22), establishes a fixed connection between the saw blade guard (15) and the support (1), preferably with its rotary disk (6), in particular to the extension arm (7) on the one hand, and between the saw blade guard (15) and the sawing unit (5), on the other, wherein, preferably, a shoe (19) that can be attached or snapped on to the counter piece (20) located there is provided to establish the connection with the support (1).
- Circular cross-cut saw according to claim 2, characterised in that, to establish the connection with the sawing unit (5), a connecting bracket (21) interacting with the counter piece (22) located there is provided.
- Circular cross-cut saw according to one of claims 1 to 3, characterised in that a suitable counter piece (22) for the locking mechanism (14) in the form of a pin is provided on the sawing unit (5).
- Circular cross-cut saw according to claim 2, characterised in that, to establish the connection with the sawing unit (5) and with the support (1), in each case a single, or a common connecting bracket (21) is provided, which interact(s) with counter pieces (20, 22) in the form of pins,
wherein, preferably, the common connecting bracket (21) is designed as a double-armed pivot bracket mounted on the saw blade guard (15). - Circular cross-cut saw according to one of claims 3 to 5, characterised in that the connecting bracket (21) and/or the counter piece (22) is designed or arranged to be elastically displaceable and/or that the connecting bracket (21) and/or the counter piece (22) comprises a lead-in chamfer (23).
- Circular cross-cut saw according to claim 1, characterised in that the adjustment part (25) of the locking device (14) is arranged on the support (1) and/or that the adjustment part (25) is an adjustable and preferably undercut pin, bolt, bar, hook or such like.
- Circular cross-cut saw according to claim 7, characterised in that the actuator (26) on the saw blade guard (15) is a pin, bolt, bar, hook or such like which can be inserted into a recess to (27) in the support (1), preferably into its rotary disk (6), in particular into the extension arm (7).
- Circular cross-cut saw according to claim 1, 7 or 8, characterised in that a transmission mechanism (28) is provided between the actuator (26) and the adjustment part (25) and is preferably shaped like a wedge gear.
- Circular cross-cut saw according to claim 1, or 7 to 9, characterised in that the locking device (14) comprises a connecting bracket (21), preferably arranged on the sawing unit (5), which interacts with the activated adjustment part (25), preferably arranged on the support (1), wherein, preferably, the activated adjustment part (25) of the connecting bracket (21) engaging with it is fixed in the activated position.
- Circular cross-cut saw according to one of claims 1 to 10, characterised in that the saw blade guard (15) is made of plastic, preferably thermoplastic plastic.
- Removable saw blade guard for a circular cross-cut saw with upper table according to one of claims 1 to 11, characterised in that a locking device (14) is formed or firmly fixed on the saw blade guard (15) such that, with it, a fixed connection between the saw blade guard (15) and a support (1) on the one hand and, on the other hand, between the saw blade guard (15) and a sawing unit (5) of the cross-cut saw with upper table can be established.
- Removable saw blade guard according to claim 12, characterised in that for the connection with the support (1) an attachable or snap-on shoe (19) is provided and/or for the connection with the sawing unit (5) a connecting bracket (21) is provided, or wherein, preferably, for the connection with the sawing unit (5) and with the support (1) a connecting bracket or a common connecting bracket (21) is provided on the saw blade guard (15) which, also preferably, is designed as a double-armed pivot bracket.
- Removable saw blade guard according to one of claims 12 or 13, characterised in that an actuator (26) is arranged on the saw blade guard (15), which is suitable and intended for interacting with an adjustment part (25) on a support (1) or on a sawing unit (5) of the circular cross-cut saw, wherein, preferably, the actuator (26) on the saw blade guard (15) is a pin, bolt, bar, hook or such like, which can be inserted into a recess (27) in the support (1).
- Removable saw blade guard according to one of claims 12 to 14, characterised in that the saw blade guard (15) is made of plastic, preferably thermoplastic plastic.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202009000786 | 2009-01-20 | ||
DE202009002774U DE202009002774U1 (en) | 2009-01-20 | 2009-02-27 | Chop saw with top table and saw blade protection |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2208592A1 EP2208592A1 (en) | 2010-07-21 |
EP2208592B1 true EP2208592B1 (en) | 2015-06-03 |
Family
ID=42243825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09015238.0A Active EP2208592B1 (en) | 2009-01-20 | 2009-12-09 | Mitre saw with upper table and mitre saw protection |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2208592B1 (en) |
DE (1) | DE202009002774U1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8418590B2 (en) | 2008-06-04 | 2013-04-16 | Black & Decker Inc. | Miter saws having locking assemblies for optimal positioning of cutting blades |
DE112017000126B4 (en) * | 2016-09-20 | 2023-11-23 | Zhengyang Technology Co., Ltd. | Double saw |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7905808U1 (en) * | 1979-03-02 | 1980-08-07 | Gotthold Haffner Gmbh + Co, 7136 Oetisheim | COMBINED TABLE AND CUTTING CIRCULAR SAW |
US5724875A (en) * | 1995-10-10 | 1998-03-10 | Black & Decker Inc. | Guard and control apparatuses for sliding compound miter saw |
ATE424270T1 (en) * | 2006-04-11 | 2009-03-15 | Black & Decker Inc | TABLE STOP FOR A MITER SAW WITH TOP PLATE |
-
2009
- 2009-02-27 DE DE202009002774U patent/DE202009002774U1/en not_active Expired - Lifetime
- 2009-12-09 EP EP09015238.0A patent/EP2208592B1/en active Active
Also Published As
Publication number | Publication date |
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EP2208592A1 (en) | 2010-07-21 |
DE202009002774U1 (en) | 2010-06-10 |
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