EP3501766A1 - Wall saw with a locking device - Google Patents
Wall saw with a locking device Download PDFInfo
- Publication number
- EP3501766A1 EP3501766A1 EP17209957.4A EP17209957A EP3501766A1 EP 3501766 A1 EP3501766 A1 EP 3501766A1 EP 17209957 A EP17209957 A EP 17209957A EP 3501766 A1 EP3501766 A1 EP 3501766A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- saw
- saw blade
- drive spindle
- rotation
- flange
- 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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Classifications
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- 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
- B27B5/38—Devices for braking the circular saw blade or the saw spindle; Devices for damping vibrations of the circular saw blade, e.g. silencing
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- 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
- B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
- B27B5/32—Devices for securing circular saw blades to the saw spindle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/044—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs the saw blade being movable on slide ways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/045—Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut
Definitions
- the present invention relates to a wall saw with a locking device according to the preamble of claim 1.
- machining usually begins with the smallest saw blade diameter and the saw blade must be changed between the part cuts.
- EP 0 785 054 B1 discloses a device system with a wall saw and a guide rail.
- the wall saw has a saw head and a motor feed unit.
- the saw head includes a saw blade attached to a saw arm and driven by a drive motor about an axis of rotation.
- the saw arm is designed to be pivotable and is stiffened by a pivoting motor about a pivot axis.
- the motorized feed unit comprises a guide carriage and a feed motor, wherein the saw head is arranged on the guide carriage and moved by the feed motor along the guide rail.
- the drive of the saw blade about the axis of rotation via the drive motor, a drive spindle and a transmission device which connects the drive spindle torque transmitting with the drive motor.
- the saw blade is fastened to the drive spindle with the help of a saw blade flange.
- the saw blade flange consists of two flange halves, with a first flange half connected to the drive spindle and a second flange half to the saw blade.
- the first and second flange half are connected to each other via a screw connection.
- On the circumference of the first flange half radially arranged locking screws are provided, which are screwed into corresponding radial bores with internal thread in the second flange half.
- the disadvantage is that the Operator must remove the saw blade to loosen the screw connection between the flange halves.
- the object of the present invention is to simplify the locking of the saw blade flange on the drive spindle for the operator in a wall saw. In addition, the change of a saw blade between sections of a separating cut for the operator to be facilitated.
- the drive spindle is locked in the unlocked state of the saw blade flange in the direction of rotation of the saw blade and is rotatable about the axis of rotation in a counter-direction opposite to the direction of rotation.
- the unlocked state of the saw blade flange of the saw blade flange is not rotatably connected to the drive spindle and is designed to be adjustable relative to the drive spindle.
- the inventive design of the drive spindle has the advantage that an unintentional tarnishing of the saw blade in the unlocked state of the saw blade flange is prevented. Characterized in that the drive spindle is rotatable in the opposite direction to the direction of rotation opposite to the rotation axis, the operator can move the saw blade or the drive spindle in an angular position, which facilitates the change of the saw blade.
- the wall saw preferably has a motor-driven feed unit with a guide carriage and a feed motor, wherein the saw head is arranged on the guide carriage and can be moved by the feed motor along a guide rail in a feed direction.
- the inventive construction of the wall saw is advantageous in large and heavy tool devices that are not hand-guided, but have a motor feed unit, which move the tool along a guide rail.
- the locking device preferably has a pull rod, which is guided in the interior of the drive spindle, and a first connection element and the saw blade flange, a second connection element, wherein the first and second connection element are non-positively and / or positively connectable.
- the first and second connecting element in the locked state of the blade flange are non-positively and / or positively connected.
- the wall saw has a safety device.
- the safety device preferably has a lever, a pawl and an axle element which connects the lever and the pawl to one another.
- the lever is adjustable in the locked state of the saw blade between a first and second end position, wherein the pawl blocks a torque transmission in the direction of rotation of the saw blade in the first end position of the lever and releases in the second end position of the lever.
- the lever can only be adjusted by the operator from the first end position to the second end position if the tool holder for the tool is countersunk in the saw arm housing.
- the pawl in the unlocked state of the saw blade flange blocks a rotation of the drive spindle in the direction of rotation of the saw blade and releases the rotation of the drive spindle in the opposite direction to the direction of rotation.
- FIG. 1 shows a device system 10 with a tool device 11, which is designed as a wall saw, and a guide rail 12.
- the wall saw 11 comprises a guide rail 12 slidably arranged on the processing and feed unit 13 and a remote control 14.
- the processing and feed unit 13 includes a processing unit 15 and a motorized feed unit 16.
- the processing unit 15 is formed as a saw head and includes a saw blade 17 which is fixed to a saw arm 18 and is driven by a drive motor about an axis of rotation 19 .
- the saw blade 17 is surrounded by a blade guard 21 which is fixed by a blade guard holder 22 on the saw arm 18th
- the saw arm 18 is formed pivotable about a pivot axis by a pivot motor.
- the swivel angle of the saw arm 18 determines with a saw blade diameter of the saw blade 17 how deep the saw blade 17 dips into a workpiece to be machined.
- the motor feed unit 16 comprises a guide carriage 23 and a feed motor.
- the saw head 15 is mounted on the guide carriage 23 and slidably formed on the feed motor along the guide rail 12 in a feed direction 24 (double arrow).
- FIGS. 2A B show the saw head 15 of the wall saw 11 with the pivotable saw arm 18 in detail, wherein the saw blade 17 and the blade guard 21 are disassembled. It shows FIG. 2A the saw head 15 in a saw arm facing front view and FIG. 2 B shows the saw head 15 in a saw arm facing away from the rear view.
- the saw blade 17 is mounted by means of a saw blade flange 25 on the saw arm 18 and rotates in operation of the wall saw 12 in a rotational direction 26 about the rotation axis 19.
- the saw arm 18 is pivotable about a pivot axis 28 by means of a pivot motor 27; Alternatively, the saw arm 18 may be formed adjustable by means of a linear drive or other drive means.
- FIG. 3 shows the saw head 15 of the wall saw 11 without saw blade 17 and blade guard 21 in a side view.
- the saw blade 17 is rotatably connected by means of the saw blade flange 25 with the saw arm 18.
- the drive of the saw blade 17 about the rotation axis 19 via a drive motor 31, a transmission device 32 and a drive spindle 33.
- the drive motor 31 is arranged in a motor housing 34 and the transmission device 32 which is formed in the embodiment as a planetary gear rotatably connected.
- the planetary gear 32 is at least partially disposed in a saw arm housing 35 of the saw arm 18.
- the last stage of the planetary gear 32 is connected torque transmitting in the embodiment with the drive spindle 33.
- the saw head 15 is mounted on the guide carriage 23 and is moved by a feed motor 36 along the guide rail 12.
- the feed motor 36, the pivot motor 27 and the drive motor 31 may be formed as separate motors or integrated into one or more motors.
- all the motors 27, 31, 36 of the wall saw 11 are arranged in the motor housing 34.
- the saw blade flange 25 in the embodiment of FIG. 3 multi-part design and comprises an inner flange 37, an outer flange 38 and a fixing screw 39.
- the inner flange 37 is rotatably mounted on the drive spindle 33, then the saw blade 17 and the outer flange are sequentially pushed onto the drive spindle 33 38, and finally the outer flange 38 is on the Fixing screw 39 attached.
- the fastening screw 39 is tightened so far that the saw blade 17 is rotationally fixed between the inner flange 37 and the outer flange 38 is clamped.
- a one-piece saw blade flange for flush cuts which is also referred to as flush flange, are used.
- FIGS. 4A B show the drive spindle 33 and the saw blade flange 25 arranged on the drive spindle 33 in an unlocked state ( FIG. 4A ) and a locked state ( FIG. 4B ).
- the saw blade flange 25 consists of the inner flange 37 which is rotatably connected to the drive spindle 33, and from the outer flange 38 and the mounting screw 39.
- the inner flange 37 against the Drive spindle 33 is adjustable and in the locked state, the inner flange 37 is rotatably connected to the drive spindle 33.
- the locking of the inner flange 37 via a locking device 41 which is formed in several parts in the embodiment.
- the locking device comprises a rod 42, which is designed as a pull rod and guided in the interior of the drive spindle 33, a tool holder 43 and a first connecting element 44.
- the tool holder 43 is provided on an end facing away from the inner flange 37 of the tie rod 42 and in the exemplary embodiment as inner Torx recording trained.
- the first connecting element 44 is provided on an inner flange 37 facing the end of the tie rod 42 and formed in the embodiment as an external thread.
- the external thread 44 is formed complementary to a bore with internal thread 45, which is provided in the inner flange 37 and forms a second connecting element.
- the drive spindle 33 is hollow and forms inside a guide for the pull rod 42.
- the pull rod 42 is biased in the pulling direction by a spring 46 which is arranged in a surrounding the pull rod 42 cavity of the drive spindle 33. The movement of the drawbar 42 via a tool which is connected via the tool holder 43 with the tie rod 42 and which is formed in the embodiment as a Torx key.
- the Torx key is inserted into the tool holder 43.
- the pull rod 42 is first displaced by means of the Torx key in the axial direction along the axis of rotation 19 against the spring tension of the spring 46 until the external thread 44 of the pull rod 42 engages in the internal thread 45 of the inner flange 37.
- the external thread 44 is screwed into the internal thread 46.
- the external thread 44 of the tie rod 42 and the internal thread 45 of the inner flange 37 form a non-positive and positive connection between the inner flange 37 and the tie rod 42.
- the threaded connection between the inner flange 37 and the tie rod 42 is fully formed when the tool holder 43 relative to the saw arm housing 35 is formed flush or against the shegearmgephase 35 is set back to the inner flange 37 back.
- the wall saw 12 has a safety device 47 , which ensures that the outer and inner threads 44, 45 are positively connected via the minimum height.
- a lever 48 is provided which is part of the safety device 47 and which is adjustable about an adjustment axis 49 between a first end position and a second end position. In the FIG. 4A illustrated position of the lever 48 is referred to as the first end position and the in FIG. 4B illustrated position of the lever 48 is referred to as a second end position.
- FIGS. 5A , B show the safety device 47 in a first position corresponding to the first end position of the lever 48
- FIGS. 6A B show the safety device 47 in a second position, which corresponds to the second end position of the lever 48.
- the safety device 47 comprises, in addition to the lever 48, a pawl 51, an axle element 52 which rigidly interconnects the lever 48 and the pawl 51, and a push button 53.
- FIG. 5A shows the lever 48 in the first end position, which corresponds to the in FIG. 4A illustrated unlocked state of the inner flange 37 corresponds
- FIG. 6A shows the lever 48 in the second end position, which corresponds to the in FIG. 4B shown locked state of the inner flange 37 corresponds.
- the lever 48 can only be adjusted by the operator from the first end position to the second end position when the tool holder 43 for the Torx key is sunk in the saw arm housing 35.
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
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Abstract
Wandsäge mit einer Verriegelungseinrichtung (41). Ein Sägeblattflansch (25) der Wandsäge ist mittels der Verriegelungseinrichtung (41) zwischen einem verriegelten Zustand und einem entriegelten Zustand verstellbar, wobei der Sägeblattflansch (25) im verriegelten Zustand drehfest mit der Antriebsspindel (33) verbunden ist und im entriegelten Zustand gegenüber der Antriebsspindel (33) verstellbar ist. Die Antriebsspindel ist im entriegelten Zustand des Sägeblattflansches in der Drehrichtung des Sägeblattes blockiert und in einer zur Drehrichtung entgegen gerichteten Gegenrichtung um die Drehachse drehbar ausgebildet.Wall saw with a locking device (41). A saw blade flange (25) of the wall saw can be adjusted between a locked state and an unlocked state by means of the locking device (41), the saw blade flange (25) being non-rotatably connected to the drive spindle (33) in the locked state and relative to the drive spindle (33) in the unlocked state. 33) is adjustable. In the unlocked state of the saw blade flange, the drive spindle is blocked in the direction of rotation of the saw blade and is designed to be rotatable about the axis of rotation in a direction opposite to the direction of rotation.
Description
Die vorliegende Erfindung betrifft eine Wandsäge mit einer Verriegelungseinrichtung gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a wall saw with a locking device according to the preamble of claim 1.
Bei der Anwendung von Wandsägen zum Trennen eines Werkstückes zwischen einem ersten und zweiten Endpunkt ist es üblich, den Trennschnitt in mehreren Teilschnitten mit unterschiedlich großen Sägeblättern durchzuführen. Wenn mehrere Sägeblätter eingesetzt werden, beginnt die Bearbeitung in der Regel mit dem kleinsten Sägeblattdurchmesser und das Sägeblatt muss zwischen den Teilschnitten gewechselt werden.In the application of wall saws for separating a workpiece between a first and second end point, it is customary to perform the separating cut in several sections with different sized saw blades. When multiple saw blades are used, machining usually begins with the smallest saw blade diameter and the saw blade must be changed between the part cuts.
Die Aufgabe der vorliegenden Erfindung besteht darin, bei einer Wandsäge die Verriegelung des Sägeblattflansches auf der Antriebsspindel für den Bediener zu vereinfachen. Außerdem soll das Wechseln eines Sägeblattes zwischen Teilschnitten eines Trennschnittes für den Bediener erleichtert werden.The object of the present invention is to simplify the locking of the saw blade flange on the drive spindle for the operator in a wall saw. In addition, the change of a saw blade between sections of a separating cut for the operator to be facilitated.
Diese Aufgabe wird bei der eingangs genannten Vorrichtung erfindungsgemäß durch die Merkmale des unabhängigen Anspruchs gelöst. Vorteilhafte Weiterbildungen sind in den abhängigen Ansprüchen angegeben.This object is achieved according to the invention in the device mentioned above by the features of the independent claim. Advantageous developments are specified in the dependent claims.
Erfindungsgemäß ist vorgesehen, dass die Antriebsspindel im entriegelten Zustand des Sägeblattflansches in der Drehrichtung des Sägeblattes blockiert ist und in einer zur Drehrichtung entgegen gerichteten Gegenrichtung um die Drehachse drehbar ist. Im entriegelten Zustand des Sägeblattflansches ist der Sägeblattflansch nicht drehfest mit der Antriebsspindel verbunden und ist gegenüber der Antriebsspindel verstellbar ausgebildet. Die erfindungsgemäße Ausbildung der Antriebsspindel hat den Vorteil, dass ein unbeabsichtigtes Anlaufen des Sägeblattes im entriegelten Zustand des Sägeblattflansches unterbunden ist. Dadurch, dass die Antriebsspindel in der zur Drehrichtung entgegen gerichteten Gegenrichtung um die Drehachse drehbar ist, kann der Bediener das Sägeblatt oder die Antriebsspindel in eine Winkelposition bewegen, die ihm den Wechsel des Sägeblattes erleichtert.According to the invention, it is provided that the drive spindle is locked in the unlocked state of the saw blade flange in the direction of rotation of the saw blade and is rotatable about the axis of rotation in a counter-direction opposite to the direction of rotation. In the unlocked state of the saw blade flange of the saw blade flange is not rotatably connected to the drive spindle and is designed to be adjustable relative to the drive spindle. The inventive design of the drive spindle has the advantage that an unintentional tarnishing of the saw blade in the unlocked state of the saw blade flange is prevented. Characterized in that the drive spindle is rotatable in the opposite direction to the direction of rotation opposite to the rotation axis, the operator can move the saw blade or the drive spindle in an angular position, which facilitates the change of the saw blade.
Bevorzugt weist die Wandsäge eine motorische Vorschubeinheit mit einem Führungsschlitten und einem Vorschubmotor auf, wobei der Sägekopf auf dem Führungsschlitten angeordnet und vom Vorschubmotor entlang einer Führungsschiene in einer Vorschubrichtung verfahrbar ist. Die erfindungsgemäße Ausbildung der Wandsäge ist vorteilhaft bei großen und schweren Werkzeuggeräten, die nicht handgeführt ausgebildet sind, sondern eine motorische Vorschubeinheit aufweisen, die das Werkzeuggerät entlang einer Führungsschiene verfahren.The wall saw preferably has a motor-driven feed unit with a guide carriage and a feed motor, wherein the saw head is arranged on the guide carriage and can be moved by the feed motor along a guide rail in a feed direction. The inventive construction of the wall saw is advantageous in large and heavy tool devices that are not hand-guided, but have a motor feed unit, which move the tool along a guide rail.
Bevorzugt weisen die Verriegelungseinrichtung eine Zugstange, die im Inneren der Antriebsspindel geführt ist, und ein erstes Verbindungselement und der Sägeblattflansch ein zweites Verbindungselement auf, wobei das erste und zweite Verbindungselement kraft- und/oder formschlüssig verbindbar sind. Besonders bevorzugt sind das erste und zweite Verbindungselement im verriegelten Zustand des Sägeblattflansches kraft- und/oder formschlüssig verbunden.The locking device preferably has a pull rod, which is guided in the interior of the drive spindle, and a first connection element and the saw blade flange, a second connection element, wherein the first and second connection element are non-positively and / or positively connectable. Particularly preferably, the first and second connecting element in the locked state of the blade flange are non-positively and / or positively connected.
In einer bevorzugten Ausführung weist die Wandsäge eine Sichereinheitseinrichtung auf. Bevorzugt weist die Sichereinheitseinrichtung einen Hebel, eine Klinke und ein Achselement, das den Hebel und die Klinke miteinander verbindet, auf.In a preferred embodiment, the wall saw has a safety device. The safety device preferably has a lever, a pawl and an axle element which connects the lever and the pawl to one another.
Besonders bevorzugt ist der Hebel im verriegelten Zustand des Sägeblattflansches zwischen einer ersten und zweiten Endposition verstellbar, wobei die Klinke eine Drehmomentübertragung in Drehrichtung des Sägeblattes in der ersten Endposition des Hebels blockiert und in der zweiten Endposition des Hebels freigibt. Der Hebel lässt sich vom Bediener nur dann aus der ersten Endposition in die zweite Endposition verstellen, wenn die Werkzeugaufnahme für das Werkzeug im Sägearmgehäuse versenkt ist.Particularly preferably, the lever is adjustable in the locked state of the saw blade between a first and second end position, wherein the pawl blocks a torque transmission in the direction of rotation of the saw blade in the first end position of the lever and releases in the second end position of the lever. The lever can only be adjusted by the operator from the first end position to the second end position if the tool holder for the tool is countersunk in the saw arm housing.
Besonders bevorzugt blockiert die Klinke im entriegelten Zustand des Sägeblattflansches eine Drehung der Antriebsspindel in Drehrichtung des Sägeblattes und gibt die Drehung der Antriebsspindel in der zur Drehrichtung entgegen gerichteten Gegenrichtung frei.Particularly preferably, the pawl in the unlocked state of the saw blade flange blocks a rotation of the drive spindle in the direction of rotation of the saw blade and releases the rotation of the drive spindle in the opposite direction to the direction of rotation.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung beschrieben. Diese soll die Ausführungsbeispiele nicht notwendigerweise maßstäblich darstellen, vielmehr ist die Zeichnung, wo zur Erläuterung dienlich, in schematischer und/oder leicht verzerrter Form ausgeführt. Dabei ist zu berücksichtigen, dass vielfältige Modifikationen und Änderungen betreffend die Form und das Detail einer Ausführungsform vorgenommen werden können, ohne von der allgemeinen Idee der Erfindung abzuweichen. Die allgemeine Idee der Erfindung ist nicht beschränkt auf die exakte Form oder das Detail der im Folgenden gezeigten und beschriebenen bevorzugten Ausführungsform oder beschränkt auf einen Gegenstand, der eingeschränkt wäre im Vergleich zu dem in den Ansprüchen beanspruchten Gegenstand. Bei gegebenen Bemessungsbereichen sollen auch innerhalb der genannten Grenzen liegende Werte als Grenzwerte offenbart und beliebig einsetzbar und beanspruchbar sein. Der Einfachheit halber sind nachfolgend für identische oder ähnliche Teile oder Teile mit identischer oder ähnlicher Funktion gleiche Bezugszeichen verwendet.Embodiments of the invention are described below with reference to the drawing. This is not necessarily to scale the embodiments, but the drawing, where appropriate for explanation, executed in a schematic and / or slightly distorted form. It should be noted that various modifications and changes may be made in the form and detail of an embodiment without departing from the general idea of the invention. The general idea of the invention is not limited to the exact form or detail of the preferred embodiment shown and described below or limited to an article that would be limited in comparison with the subject matter claimed in the claims. For given design ranges, values lying within the specified limits should also be disclosed as limit values and be arbitrarily usable and claimable. For simplicity, the same reference numerals are used below for identical or similar parts or parts with identical or similar function.
Es zeigen:
- FIG. 1
- ein Gerätesystem mit einer Führungsschiene und einer Wandsäge, die eine entlang der Führungsschiene verschiebbar angeordnete Bearbeitungs- und Vorschubeinheit mit einem Sägekopf und einer motorischen Vorschubeinheit umfasst;
- FIGN. 2A, B
- den Sägekopf der
FIG. 1 in einer Vorderansicht (FIG. 2A ) und einer Rückansicht (FIG. 2B ); - FIG. 3
- den Sägekopf der
FIG. 1 ohne Sägeblatt, das mittels eines Sägeblattflansches an einer Antriebsspindel anordbar ist, in einer Seitenansicht; - FIGN. 4A, B
- die Antriebsspindel und den Sägeblattflansch der
FIG. 3 , die mittels einer Verriegelungseinrichtung miteinander verbindbar sind, in einem entriegelten Zustand (FIG. 4A ) und einem verriegelten Zustand (FIG. 4B ); - FIGN. 5A,
- B eine Sicherheitseinrichtung in einer ersten Endposition, die dem in
FIG. 4A dargestellten, entriegelten Zustand des Sägeblattflansches entspricht; und - FIGN. 6A, B
- die Sicherheitseinrichtung in einer zweiten Endposition, die dem in
FIG. 4B dargestellten, verriegelten Zustand des Sägeblattflansches entspricht.
- FIG. 1
- a device system comprising a guide rail and a wall saw comprising a processing and feed unit slidably disposed along the guide rail, comprising a saw head and a motor feed unit;
- FIGS. 2A, B
- the saw head of
FIG. 1 in a front view (FIG. 2A ) and a rear view (FIG. 2 B ); - FIG. 3
- the saw head of
FIG. 1 without a saw blade, which can be arranged on a drive spindle by means of a saw blade flange, in a side view; - FIGS. 4A, B
- the drive spindle and the saw blade flange of
FIG. 3 , which are connectable to each other by means of a locking device, in an unlocked state (FIG. 4A ) and a locked state (FIG. 4B ); - FIGS. 5A,
- B is a safety device in a first end position, which corresponds to the in
FIG. 4A shown, unlocked state of the saw blade corresponds to; and - FIGS. 6A, B
- the safety device in a second end position, the in
FIG. 4B shown, locked state of the saw blade corresponds.
Zum Schutz des Bedieners ist das Sägeblatt 17 von einem Sägeblattschutz 21 umgeben, der mittels eines Blattschutzhalters 22 am Sägearm 18 befestigt wird. Der Sägearm 18 ist von einem Schwenkmotor um eine Schwenkachse schwenkbar ausgebildet. Der Schwenkwinkel des Sägearms 18 bestimmt mit einem Sägeblattdurchmesser des Sägeblattes 17, wie tief das Sägeblatt 17 in ein zu bearbeitendes Werkstück eintaucht. Die motorische Vorschubeinheit 16 umfasst einen Führungsschlitten 23 und einen Vorschubmotor. Der Sägekopf 15 ist auf dem Führungsschlitten 23 befestigt und über den Vorschubmotor entlang der Führungsschiene 12 in einer Vorschubrichtung 24 (Doppelpfeil) verschiebbar ausgebildet.To protect the operator, the
Das Sägeblatt 17 wird mittels eines Sägeblattflansches 25 am Sägearm 18 montiert und rotiert im Betrieb der Wandsäge 12 in einer Drehrichtung 26 um die Drehachse 19. Der Sägearm 18 ist mittels eines Schwenkmotors 27 um eine Schwenkachse 28 schwenkbar ausgebildet; alternativ kann der Sägearm 18 mit Hilfe eines Linearantriebes oder einer sonstigen Antriebseinrichtung verstellbar ausgebildet sein.The
Der Sägekopf 15 ist auf dem Führungsschlitten 23 befestigt und wird von einem Vorschubmotor 36 entlang der Führungsschiene 12 verfahren. Der Vorschubmotor 36, der Schwenkmotor 27 und der Antriebsmotor 31 können als separate Motoren ausgebildet sein oder in einen oder mehrere Motoren integriert sein. Im Ausführungsbeispiel sind sämtliche Motoren 27, 31, 36 der Wandsäge 11 im Motorgehäuse 34 angeordnet.The
Der Sägeblattflansch 25 im Ausführungsbeispiel der
Das Verriegeln des Innenflansches 37 erfolgt über eine Verriegelungseinrichtung 41, die im Ausführungsbeispiel mehrteilig ausgebildet ist. Die Verriegelungseinrichtung umfasst eine Stange 42, die als Zugstange ausgebildet und im Inneren der Antriebsspindel 33 geführt ist, eine Werkzeugaufnahme 43 und ein erstes Verbindungselement 44. Die Werkzeugaufnahme 43 ist an einem dem Innenflansch 37 abgewandten Ende der Zugstange 42 vorgesehen und im Ausführungsbeispiel als Innen-Torx-Aufnahme ausgebildet. Das erste Verbindungselement 44 ist an einem dem Innenflansch 37 zugewandten Ende der Zugstange 42 vorgesehen und im Ausführungsbeispiel als Außengewinde ausgebildet.The locking of the
Das Außengewinde 44 ist komplementär zu einer Bohrung mit Innengewinde 45 ausgebildet, die im Innenflansch 37 vorgesehen ist und ein zweites Verbindungselement bildet. Die Antriebsspindel 33 ist hohl ausgeführt und bildet im Inneren eine Führung für die Zugstange 42. Die Zugstange 42 ist durch eine Feder 46, die in einem die Zugstange 42 umgebenden Hohlraum der Antriebsspindel 33 angeordnet ist, in Zugrichtung vorbelastet. Die Bewegung der Zugstange 42 erfolgt über ein Werkzeug, das über die Werkzeugaufnahme 43 mit der Zugstange 42 verbindbar ist und das im Ausführungsbeispiel als Torx-Schlüssel ausgebildet ist.The
Um den Innenflansch 37 aus dem entriegelten Zustand (
Um sicherzustellen, dass der Innenflansch 37 im Betrieb des Sägeblattes 17 sicher mit der Antriebsspindel 33 verbunden ist, muss das Außengewinde 44 der Zugstange 42 über eine Mindesthöhe in das Innengewinde 45 des Innenflansches 37 eingeschraubt werden. Die Wandsäge 12 weist eine Sicherheitseinrichtung 47 auf, die sicherstellt, dass das Außen- und Innengewinde 44, 45 über die Mindesthöhe formschlüssig verbunden sind. An der flanschabgewandten Seite des Sägearmgehäuses 35 ist ein Hebel 48 vorgesehen, der Bestandteil der Sicherheitseinrichtung 47 ist und der um eine Verstellachse 49 zwischen einer ersten Endposition und einer zweiten Endposition verstellbar ist. Die in
Claims (8)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17209957.4A EP3501766A1 (en) | 2017-12-22 | 2017-12-22 | Wall saw with a locking device |
PCT/EP2018/083004 WO2019120925A1 (en) | 2017-12-22 | 2018-11-29 | Wall saw having a locking device |
US16/954,958 US11597117B2 (en) | 2017-12-22 | 2018-11-29 | Wall saw having a locking device |
EP18807378.7A EP3727770B1 (en) | 2017-12-22 | 2018-11-29 | Wall saw with a locking device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17209957.4A EP3501766A1 (en) | 2017-12-22 | 2017-12-22 | Wall saw with a locking device |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3501766A1 true EP3501766A1 (en) | 2019-06-26 |
Family
ID=60811862
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17209957.4A Withdrawn EP3501766A1 (en) | 2017-12-22 | 2017-12-22 | Wall saw with a locking device |
EP18807378.7A Active EP3727770B1 (en) | 2017-12-22 | 2018-11-29 | Wall saw with a locking device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18807378.7A Active EP3727770B1 (en) | 2017-12-22 | 2018-11-29 | Wall saw with a locking device |
Country Status (3)
Country | Link |
---|---|
US (1) | US11597117B2 (en) |
EP (2) | EP3501766A1 (en) |
WO (1) | WO2019120925A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3970932A1 (en) * | 2020-09-22 | 2022-03-23 | Hilti Aktiengesellschaft | System, method and flange device for fixing a saw blade to a drive spindle of a sawing device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0785054B1 (en) | 1996-01-17 | 2002-10-30 | HILTI Aktiengesellschaft | Wall sawing machine and saw blade |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US114926A (en) * | 1871-05-16 | Improvement in methods of attaching saws to their arbors | ||
US51478A (en) * | 1865-12-12 | Improvement in centering circular saws | ||
US3623281A (en) * | 1969-06-16 | 1971-11-30 | Robert H Moffat | Mounting fixture |
JP5457375B2 (en) * | 2008-02-29 | 2014-04-02 | フスクバルナ アクティエボラーグ | Communication method for electric saw |
DE202011110131U1 (en) * | 2011-06-06 | 2013-02-11 | Robert Bosch Gmbh | Hand machine tool fixture |
US9089989B2 (en) * | 2012-12-31 | 2015-07-28 | Robert Bosch Gmbh | Geared bolt system for securing a circular saw blade |
JP6287205B2 (en) * | 2013-12-27 | 2018-03-07 | 日立工機株式会社 | Power working machine |
JP6478409B2 (en) * | 2015-08-18 | 2019-03-06 | 株式会社マキタ | Work tools |
US10906153B2 (en) * | 2018-06-01 | 2021-02-02 | Makita Corporation | Work tool |
US11052475B2 (en) * | 2018-11-27 | 2021-07-06 | Zhejiang Burley Tools Co., Ltd. | Rapid replacing structure for multi-purpose saw |
IT201800010747A1 (en) * | 2018-11-30 | 2020-05-30 | Gmm S P A | Tool holder assembly of a machine for processing block or sheet materials, a machine including this group and method for processing block or sheet materials |
-
2017
- 2017-12-22 EP EP17209957.4A patent/EP3501766A1/en not_active Withdrawn
-
2018
- 2018-11-29 WO PCT/EP2018/083004 patent/WO2019120925A1/en unknown
- 2018-11-29 EP EP18807378.7A patent/EP3727770B1/en active Active
- 2018-11-29 US US16/954,958 patent/US11597117B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0785054B1 (en) | 1996-01-17 | 2002-10-30 | HILTI Aktiengesellschaft | Wall sawing machine and saw blade |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3970932A1 (en) * | 2020-09-22 | 2022-03-23 | Hilti Aktiengesellschaft | System, method and flange device for fixing a saw blade to a drive spindle of a sawing device |
WO2022063587A1 (en) * | 2020-09-22 | 2022-03-31 | Hilti Aktiengesellschaft | System, method and flange device for fastening a saw blade to a drive spindle of a saw device |
Also Published As
Publication number | Publication date |
---|---|
EP3727770A1 (en) | 2020-10-28 |
WO2019120925A1 (en) | 2019-06-27 |
EP3727770B1 (en) | 2022-03-23 |
US11597117B2 (en) | 2023-03-07 |
US20200376704A1 (en) | 2020-12-03 |
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