EP3300869B1 - Table saw and push stick for it - Google Patents
Table saw and push stick for it Download PDFInfo
- Publication number
- EP3300869B1 EP3300869B1 EP16020359.2A EP16020359A EP3300869B1 EP 3300869 B1 EP3300869 B1 EP 3300869B1 EP 16020359 A EP16020359 A EP 16020359A EP 3300869 B1 EP3300869 B1 EP 3300869B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- workpiece
- push
- push stick
- flat contact
- holding
- 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.)
- Not-in-force
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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
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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
- B27B25/00—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees
- B27B25/10—Manually-operated feeding or pressing accessories, e.g. pushers
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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
- B27B13/00—Band or strap sawing machines; Components or equipment therefor
- B27B13/16—Accessories, e.g. for cooling the saw blade
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
- B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
- B27G19/06—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for band or strap saws
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/647—With means to convey work relative to tool station
- Y10T83/6584—Cut made parallel to direction of and during work movement
- Y10T83/6638—Unattached manual work pusher
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/768—Rotatable disc tool pair or tool and carrier
- Y10T83/7734—With guard for tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/849—With signal, scale, or indicator
- Y10T83/853—Indicates tool position
- Y10T83/855—Relative to another element
- Y10T83/856—To work-engaging member
Definitions
- the invention relates to a table saw according to the preamble of claim 8, and a push stick therefor according to the preamble of claim 1.
- Table saws of the generic type have a machine table, which is penetrated by a motor-driven saw blade. Workpieces are placed on the machine table and pushed towards the saw blade, where then the saw blade comes into attack on the workpiece and sawed it on further feed.
- each table saw must be equipped with a so-called push stick. If the width of the workpiece to be sawn is less than 10 cm, the push stick should already be used in order to avoid accidental contact of the saw blade with the hand.
- a push stick is the utility model DE 20 2010 004 458 U1 can be seen, where there is additionally provided a protective cover over the saw blade and a sensor on the table saw, with a body part of a user is detected.
- table-top saws must also be equipped with a push stick.
- Such a push stick of the generic type has at its one end a gripping possibility for the machine operator and on its other end a Ecknut or a notch or workpiece engaging notch to attack on the workpiece.
- the workpiece engaging notch has two surfaces arranged at a preferably right angle to one another, a sliding surface pointing in the feed direction of the workpiece, and a hold-down surface pressing from above onto the workpiece.
- the push stick thus has a gripping possibility for a machine operator at its operator end, and also at its spaced, workpiece side end suitable for attacking the workpiece workpiece engaging notch, which pointing in the workpiece feed direction sliding surface and one of the upper side below Having an angle projecting hold-down surface.
- the push stick now further comprises a detection device, which detects whether the sliding surface and the hold-down surface rest flush against the workpiece, and a signaling device, which in response to whether the detection device detects such a plane system of the sliding surface and the hold-down surface or not corresponding plan contact signal is, which therefore signals whether the sliding surface and the hold-down plane abut the workpiece or not.
- the angle at which the hold-down surface protrudes from the sliding surface is usually a right angle, since the workpieces to be sawn are usually boards with right angles adjacent side edges. For special applications, however, another angle could be provided.
- the table saw according to the invention is accordingly equipped with such a push stick.
- the table saw according to the invention can in this case have a motor-driven saw blade which passes through a machine table and can be designed, for example, as a table-top circular saw or as a table-top saw.
- the detection device on the sliding surface and on the hold-down surface each have at least one recessed push-button switch, which indicates whether the respective surface is applied to the workpiece or not.
- the key switches are further preferred sunk relative to the sliding surface or the hold-down, and advantageously so sunk that actuation of the respective key switch only takes place when the respective surface rests flat on the workpiece.
- buttons or push buttons can be designed as a micro-probe. If the two buttons are advantageously connected in an AND gate, so that the detection device only detects a plane contact when both micro buttons are actuated by the pressure exerted by the workpiece, the result is a simple and reliable construction.
- the detection device can also have an electro-optical or electroacoustic scanning device, which detects whether the sliding surface and the hold-down surface lie flat against the workpiece.
- the signaling device may comprise an LED or another light which illuminates when the installation is flat, for example when the AND gate is closed by a pressure exerted by the workpiece on the two micro-buttons on the sliding surface and the hold-down surface.
- the signaling device may comprise an LED or another light which illuminates when the installation is flat, for example when the AND gate is closed by a pressure exerted by the workpiece on the two micro-buttons on the sliding surface and the hold-down surface.
- the signaling device may comprise an LED or another light which illuminates when the installation is flat, for example when the AND gate is closed by a pressure exerted by the workpiece on the two micro-buttons on the sliding surface and the hold-down surface.
- the signaling device has a wired or preferably wireless communication interface, such as, for example, a Bluetooth or Wifi interface, via which the schedule signal can be transmitted, and the machine control of the table saw has a corresponding, assigned communication interface, then the schedule signal can also be evaluated on the machine side become.
- a wired or preferably wireless communication interface such as, for example, a Bluetooth or Wifi interface
- the machine controller may generally include an actuator and an actuator actuator that actuates the actuator in response to whether or not the faceplate signal indicates whether or not the sliding surface and the holddown surface are planar against the workpiece.
- an actuator is mainly an ON / OFF switch for driving the saw blade in question, to allow turning on the table saw only when planed by sliding piece workpiece.
- Conceivable as an actuator would be an emergency stop switch, or even a brake for the saw blade to stop the saw blade as soon as possible, if no more plan system is given.
- the debounce preferably has a low-pass filter, a flip-flop and / or a microcontroller with Entprellsoftware.
- the debouncing device may be part of the signaling device on the push stick or part of the machine control on the table saw.
- a button cell receptacle is provided, in which a button cell is inserted.
- a wired Planetsignalübertragung but also a wired power supply would be conceivable.
- FIGS. 1 and 2 show a push stick 3, at his in the FIG. 1 Right end can be grasped by a machine operator of a table saw or band saw to work with his in the FIG. 1 left end can be brought to a provided there on a workpiece engaging notch in attack on a saw blade of the table saw / table band saw to be pushed workpiece.
- the workpiece engagement notch has a sliding surface 1 and a hold-down surface 2 projecting from the upper side at right angles to the workpiece, so that the push stick 3 with its sliding surface 1 and its hold-down surface 2 is attached flat to a workpiece formed, for example, as a board with side faces perpendicular to one another can.
- microswitch or microswitch 4 On the sliding surface 1 and on the hold-down surface 2 of the sliding stick 3 are located two sunk microswitch or microswitch 4.
- the sampling could be done instead of or in addition to these electromechanical components by an electro-optical or electro-acoustic scanning, as long as the detection device 4 formed thereby detects whether the sliding surface 1 and the hold-down surface 2 rest flat against the workpiece.
- the push stick 3 has an LED 5, which serves as a signaling device 5 which, in response to whether the detection device 4 formed by the two micro-probes 4 detects the plane contact of the sliding surface 1 and the hold-down surface 2 on the workpiece or not, a Planstrom- Signal indicates, which signals whether the sliding surface 1 and the hold-down surface 2 flat against the workpiece or not.
- the LED 5 is therefore illuminated when the system is flat.
- the signaling device 5 could alternatively or in addition to the LED 5 also have a different signal generator, such as an acoustic signal generator or a vibration alarm.
- the signaling device has a communication module or a communication interface, for example a Bluetooth or WLAN transmitter / receiver, via which it is connected to a machine control of the table saw. So it would be possible, for example, that the table saw can only be put into operation when the sliding surface 1 and the hold-down surface 2 of the sliding stick 3 plan on the workpiece or rest.
- a communication module or a communication interface for example a Bluetooth or WLAN transmitter / receiver
- FIG. 3 shows the circuit diagram of the push stick 3, and thus the electrical connection of the micro-probe 4 with the LED 5 and provided as a power button cell 7, which in a in the FIG. 1 shown button cell holder 8 is inserted.
- the two micro-switches 4 are connected as an AND gate, ie, the LED 5 lights only when both micro-switches 4 are actuated, so if both surfaces 1, 2 rest flat on the workpiece.
- the luminous LED 5 indicates to the operator using the push stick 3 that the workpiece can be fed to the saw blade of the table saw with the greatest possible safety.
- the plane contact signal emitted by the two micro-buttons 4 also for sensitive signal processing devices, for example on the machine control of the circular saw, it is advantageous to debounce the micro-push-buttons 4. This can be done for example by a low-pass filter, a flip-flop or by a microcontroller with appropriate software.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
Description
Die Erfindung betrifft eine Tischsäge gemäß dem Oberbegriff des Anspruchs 8, sowie einen Schiebestock dafür gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a table saw according to the preamble of
Tischsägen der gattungsgemäßen Art weisen einen Maschinentisch auf, der von einem motorbetriebenen Sägeblatt durchgriffen wird. Werkstücke werden dabei auf dem Maschinentisch abgelegt und zum Sägeblatt hin geschoben, wo dann das Sägeblatt in Angriff an das Werkstück gelangt und es bei weiterem Vorschub zersägt.Table saws of the generic type have a machine table, which is penetrated by a motor-driven saw blade. Workpieces are placed on the machine table and pushed towards the saw blade, where then the saw blade comes into attack on the workpiece and sawed it on further feed.
Arbeiten an solchen Tischsägen, beispielsweise Tischkreissägen oder auch an Tischbandsägen sind mit erheblichen Gefahren verbunden. Insbesondere die das zu sägende Werkstück führende Hand des Maschinenbedieners ist dabei der Gefahr ausgesetzt, unbeabsichtigt über das Sägeblatt geführt und dabei schwer verletzt zu werden.Working on such table saws, such as table saws or table band saws are associated with significant risks. In particular, the hand of the machine operator leading the workpiece to be sawn is exposed to the danger of being inadvertently guided over the saw blade and being seriously injured.
Zum Schutz des Maschinenbedieners und insbesondere seiner das Werkstück führenden Hand sind daher bereits verschiedene Vorrichtungen bekannt. So zeigt die
Ähnliches zeigt die US-Patentschrift
Weiterhin ist in der Gebrauchsmusterschrift
Gemäß der Norm EN62841-3-1 muss jede Tischkreissäge mit einem sog. Schiebestock versehen sein. Ist die Breite des zu sägenden Werkstückes kleiner als 10 cm, soll bereits der Schiebestock verwendet werden, um eine versehentliche Berührung des Sägeblatts durch die Hand zu vermeiden. Ein solcher Schiebestock ist dem Gebrauchsmuster
Gemäß der Norm EN61029-2-5 bzw. EN1807 sind auch Tischbandsägen mit einem Schiebestock auszurüsten.According to the EN61029-2-5 or EN1807 standard, table-top saws must also be equipped with a push stick.
Ein solcher Schiebestock der gattungsgemäßen Art weist an seinem einen Ende eine Greifmöglichkeit für den Maschinenbediener und auf seinem anderen Ende eine Ecknut bzw. eine Einkerbung oder Werkstückangriffskerbe auf, um an dem Werkstück anzugreifen. Dazu hat die Werkstückangriffskerbe zwei zueinander unter einem vorzugsweise rechten Winkel angeordneten Flächen, eine in Vorschubrichtung des Werkstücks weisenden Schiebefläche und eine von oben auf das Werkstück drückenden Niederhaltefläche.Such a push stick of the generic type has at its one end a gripping possibility for the machine operator and on its other end a Ecknut or a notch or workpiece engaging notch to attack on the workpiece. For this purpose, the workpiece engaging notch has two surfaces arranged at a preferably right angle to one another, a sliding surface pointing in the feed direction of the workpiece, and a hold-down surface pressing from above onto the workpiece.
Hiervon ausgehend ist es Aufgabe der vorliegenden Erfindung, die Arbeit an einer mortorbetriebenen Tischsägen, wie beispielsweise an einer Tischkreissäge oder einer Tischbandsäge mit einfachen Mitteln sicherer zu machen.On this basis, it is an object of the present invention to make safer work on a mortor-driven table saws, such as a table saw or a band saw with simple means.
Diese Aufgabe wird hinsichtlich eines Schiebestocks mit den Merkmalen des Anspruchs 1 gelöst, hinsichtlich einer Tischkreissäge mit den Merkmalen des Anspruchs 8.This object is achieved in terms of a sliding stick with the features of
Ausgehend von einem gattungsgemäßen Schiebestock weist der erfindungsgemäße Schiebestock somit eine Greifmöglichkeit für einen Maschinenbediener an seinem bedienerseitigen Ende auf, und ferner an seinem davon beabstandeten, werkstückseitigen Ende eine zum Angriff an das Werkstück geeignete Werkstücksangriffskerbe, welche eine in Werkstückvorschubrichtung weisende Schiebefläche und eine davon oberseitig unter einem Winkel vorspringende Niederhaltefläche aufweist. Erfindungsgemäß weist der Schiebestock nun ferner eine Erfassungseinrichtung auf, welche erfasst, ob die Schiebefläche und die Niederhaltefläche plan an dem Werkstück anliegen, sowie eine Signalgebereinrichtung, welche im Ansprechen darauf, ob die Erfassungseinrichtung eine solche Plananlage der Schiebefläche und der Niederhaltefläche erfasst oder nicht, ein entsprechendes Plananlage-Signal gibt, welches also signalisiert, ob die Schiebefläche und die Niederhaltefläche plan an dem Werkstück anliegen oder nicht. Dabei wird der Winkel, unter dem die Niederhaltefläche von der Schiebefläche vorspringt, in der Regel ein rechter Winkel sein, da die zu sägenden Werkstücke in der Regel Bretter mit rechtwinklig aneinander grenzenden Seitenkanten sind. Für Spezialanwendungen könnte jedoch auch ein anderer Winkel vorgesehen sein.Starting from a generic push stick, the push stick according to the invention thus has a gripping possibility for a machine operator at its operator end, and also at its spaced, workpiece side end suitable for attacking the workpiece workpiece engaging notch, which pointing in the workpiece feed direction sliding surface and one of the upper side below Having an angle projecting hold-down surface. According to the invention, the push stick now further comprises a detection device, which detects whether the sliding surface and the hold-down surface rest flush against the workpiece, and a signaling device, which in response to whether the detection device detects such a plane system of the sliding surface and the hold-down surface or not corresponding plan contact signal is, which therefore signals whether the sliding surface and the hold-down plane abut the workpiece or not. In this case, the angle at which the hold-down surface protrudes from the sliding surface, is usually a right angle, since the workpieces to be sawn are usually boards with right angles adjacent side edges. For special applications, however, another angle could be provided.
Die erfindungsgemäße Tischsäge ist entsprechend mit einem solchen Schiebestock ausgerüstet. Die erfindungsgemäße Tischsäge kann dabei ein einen Maschinentisch durchgreifendes, motorbetriebenes Sägeblatt aufweisen und kann beispielsweise als Tischkreissäge oder als Tischbandsäge ausgebildet sein.The table saw according to the invention is accordingly equipped with such a push stick. The table saw according to the invention can in this case have a motor-driven saw blade which passes through a machine table and can be designed, for example, as a table-top circular saw or as a table-top saw.
Dadurch, dass nun erfasst und signalisiert wird, ob sowohl die Schiebefläche als auch die Niederhaltefläche plan an dem Werkstück aufliegen, kann ein Abrutschen des Schiebestocks während der Werkstückzufuhr zum Sägeblatt vermieden werden. Ein eine zusätzliche Gefahrenquelle darstellendes nach vorne Beugen des Maschinenbedieners zur visuellen Überprüfung, ob beide Flächen plan auf dem Werkstück aufliegen, kann somit entfallen. Vielmehr erhält der ja am anderen Ende des Schiebestocks zugreifende Maschinenbediener erstmals die Möglichkeit, mit Sicherheit festzustellen, ob Plananlage am Werkstück vorherrscht oder nicht.The fact that now detected and signaled whether both the sliding surface and the hold-down surface rest flat against the workpiece, slipping of the push stick can be avoided during the workpiece feed to the saw blade. An additional source of danger is forward bending the machine operator for visual inspection, whether both surfaces rest flat on the workpiece, can thus be omitted. On the contrary, the machine operator accessing the other end of the sliding stick for the first time has the opportunity to ascertain with certainty whether or not there is a contact surface on the workpiece.
Vorteilhafte Weiterbildungen sind Gegenstand der übrigen Unteransprüche.Advantageous developments are the subject of the remaining dependent claims.
So kann die Erfassungseinrichtung an der Schiebefläche und an der Niederhaltefläche jeweils zumindest einen versenkten Tastschalter aufweisen, welcher angibt, ob die jeweilige Fläche an dem Werkstück anliegt oder nicht. Die Tastschalter sind dabei weiter bevorzugt gegenüber der Schiebefläche bzw. der Niederhaltefläche versenkt angebracht, und zwar vorteilhaft so versenkt, dass eine Betätigung des jeweiligen Tastschalters nur erfolgt, wenn die jeweilige Fläche plan an dem Werkstück aufliegt.Thus, the detection device on the sliding surface and on the hold-down surface each have at least one recessed push-button switch, which indicates whether the respective surface is applied to the workpiece or not. The key switches are further preferred sunk relative to the sliding surface or the hold-down, and advantageously so sunk that actuation of the respective key switch only takes place when the respective surface rests flat on the workpiece.
Die Taster bzw. Tastschalter können dabei als Mikrotaster ausgebildet sein. Sind die beiden Taster vorteilhaft in einem UND-Gatter geschaltet, so dass die Erfassungseinrichtung eine Plananlage nur dann erfasst, wenn beide Mikrotaster durch den per Werkstück ausgeübten Druck betätigt werden, so ergibt sich ein einfacher und zuverlässiger Aufbau.The buttons or push buttons can be designed as a micro-probe. If the two buttons are advantageously connected in an AND gate, so that the detection device only detects a plane contact when both micro buttons are actuated by the pressure exerted by the workpiece, the result is a simple and reliable construction.
Alternativ oder ergänzend kann die Erfassungseinrichtung auch eine elektrooptische oder elektroakkustische Abtastvorrichtung aufweisen, welche erfasst, ob die Schiebefläche und die Niederhaltefläche plan an dem Werkstück aufliegen.Alternatively or additionally, the detection device can also have an electro-optical or electroacoustic scanning device, which detects whether the sliding surface and the hold-down surface lie flat against the workpiece.
Die Signalgebereinrichtung kann dagegen eine LED oder eine andere Leuchte umfasst, welche bei Plananlage leuchtet, also beispielsweise dann, wenn das UND-Gatter durch einen vom Werkstück auf die beiden Mikrotaster an der Schiebefläche und der Niederhaltefläche ausgeübten Druck geschlossen ist. Alternativ oder ergänzend wäre selbstverständlich auch eine andere Art von Signalgeber, beispielsweise ein akustischer Alarm bei nicht gegebener Plananlage oder ein entsprechendes Vibrationsfeedback, denkbar.On the other hand, the signaling device may comprise an LED or another light which illuminates when the installation is flat, for example when the AND gate is closed by a pressure exerted by the workpiece on the two micro-buttons on the sliding surface and the hold-down surface. Alternatively or additionally, of course, would be another type of Signal generator, such as an audible alarm when not given plan system or a corresponding vibration feedback, conceivable.
Weist die Signalgebereinrichtung eine drahtgebundene oder vorzugsweise drahtlose Kommunikationsschnittstelle auf, wie beispielsweise eine Bluetooth- oder Wifi-Schnittstelle, über welche das Plananlage-Signal übertragbar ist, und die Maschinensteuerung der Tischsäge eine entsprechende, zugeordnete Kommunikationsschnittstelle, so kann das Plananlage-Signal auch maschinenseitig ausgewertert werden.If the signaling device has a wired or preferably wireless communication interface, such as, for example, a Bluetooth or Wifi interface, via which the schedule signal can be transmitted, and the machine control of the table saw has a corresponding, assigned communication interface, then the schedule signal can also be evaluated on the machine side become.
So kann die Maschinensteuerung allgemein ein Stellglied und eine Betätigungseinrichtung für das Stellglied umfasst, welche das Stellglied im Ansprechend darauf betätigt, ob das Plananlage-Signal signalisiert, ob die Schiebefläche und die Niederhaltefläche plan an dem Werkstück anliegen oder nicht. Als Stellglied kommt dabei hauptsächlich ein AN/AUS-Schalter für den Antrieb des Sägeblatts in Frage, um eine Anschalten der Tischkreissäge nur bei per Schiebestück plan geführtem Werkstück zu erlauben. Denkbar als Stellglied wäre auch ein Notauss-Schalter, oder sogar eine bremse für das Sägeblatt, um das Sägeblatt möglichst schnell anzuhalten, wenn keine Plananlage mehr gegeben ist.Thus, the machine controller may generally include an actuator and an actuator actuator that actuates the actuator in response to whether or not the faceplate signal indicates whether or not the sliding surface and the holddown surface are planar against the workpiece. As an actuator is mainly an ON / OFF switch for driving the saw blade in question, to allow turning on the table saw only when planed by sliding piece workpiece. Conceivable as an actuator would be an emergency stop switch, or even a brake for the saw blade to stop the saw blade as soon as possible, if no more plan system is given.
Zur Auswertung des von den Tastern der Erfassungseinrichtung abgegebenen Plananlage-Signals ist dabei vorteilhaft eine Entprelleinrichtung zum Entprellen des Plananlagesignals vorgesehen, wobei die Entprelleinrichtung vorzugsweise einen Tiefpassfilter, ein Flip-Flop und/oder einen Mikrocontroller mit Entprellsoftware aufweist. Die Entprelleinrichtung kann dabei Teil der Signalgebereinrichtung am Schiebestock oder Teil der Maschinensteuerung an der Tischsäge sein.To evaluate the output from the probes of the detection device Plananlage signal is advantageously a Entprelleinrichtung for debouncing the Plananlagesignals provided, the debounce preferably has a low-pass filter, a flip-flop and / or a microcontroller with Entprellsoftware. The debouncing device may be part of the signaling device on the push stick or part of the machine control on the table saw.
Weiterhin vorteilhaft ist zur Stromversorgung der Erfassungseinrichtung und der Signalgebereinrichtung am Schiebestock eine Knopfzellenaufnahme vorgesehen, in die eine Knopfzelle eingelegt ist. Insbesondere bei einer kabelgebundenen Plansignalübertragung wäre aber auch eine kabelgebundene Stromversorgung denkbar.Further advantageous for the power supply of the detection device and the signaling device on the push stick a button cell receptacle is provided, in which a button cell is inserted. Especially with a wired Planetsignalübertragung but also a wired power supply would be conceivable.
Im Folgenden wird anhand der beiliegenden Zeichnungen eine vorteilhafte Ausführungsform der Erfindung näher erläutert. Es zeigen:
Figur 1- eine Seitenansicht einer vorteilhaften Ausführungsform eines Schiebestocks;
Figur 2- eine perspektivische Frontansicht des in
Schiebestocks; undFigur 1 Figur 3- ein Schaltbild des in den
undFiguren 12 gezeigten Schiebestocks.
- FIG. 1
- a side view of an advantageous embodiment of a push stick;
- FIG. 2
- a front perspective view of the
FIG. 1 Stocks Slide; and - FIG. 3
- a diagram of the in the
FIGS. 1 and2 shown sliding sticks.
Zunächst wird Bezug genommen auf die
An der Schiebefläche 1 und an der Niederhaltefläche 2 des Schiebestocks 3 befinden sich versenkt zwei Mikrotaster bzw. Mikroschalter 4. Die Abtastung könnte anstelle oder ergänzend zu diesen elektromechanischen Komponenten auch durch eine elektrooptische oder elektroakustische Abtastung erfolgen, solange die dadurch gebildete Erfassungseinrichtung 4 erfasst, ob die Schiebefläche 1 und die Niederhaltefläche 2 plan an dem Werkstück anliegen.On the sliding
Weiterhin weist der Schiebestock 3 eine LED 5 auf, welche als Signalgebereinrichtung 5 dient, die im Ansprechen darauf, ob die durch die beiden Mikrotaster 4 gebildete Erfassungseinrichtung 4 die Plananlage der Schiebefläche 1 und der Niederhaltefläche 2 an dem Werkstück erfasst oder nicht, ein Plananlage-Signal gibt, welches signalisiert, ob die Schiebefläche 1 und die Niederhaltefläche 2 plan an dem Werkstück anliegen oder nicht. Im Ausführungsbeispiel leuchtet die LED 5 also bei Plananlage. Es könnte natürlich auch so sein, dass die LED 5 als Warnleuchte dann leuchtet, wenn keine beiderseitige Plananlage gegeben ist. Ferner könnte die Signalgebereinrichtung 5 alternativ oder ergänzend zu der LED 5 auch einen anderen Signalgeber aufweisen, beispielsweise einen akustischen Signalgeber oder einen Vibrationsalarm. Weiterhin wäre es denkbar, dass die Signalgebereinrichtung über ein Kommunikationsmodul bzw. eine Kommunikationsschnittstelle verfügt, beispielsweise einen Bluetooth- oder WLAN-Sender/Empfänger, über welchen sie mit einer Maschinensteuerung der Tischkreissäge verbunden ist. So wäre es dann beispielsweise möglich, dass die Tischkreissäge nur dann in Betrieb genommen werden kann, wenn die Schiebefläche 1 und die Niederhaltefläche 2 des Schiebestocks 3 plan am Werkstück an- bzw. aufliegen.Furthermore, the
Um das von den beiden Mikrotastern 4 abgegebene Plananlage-Signal auch für empfindliche Signalverarbeitungseinrichtungen nutzen zu können, beispielsweise an der Maschinensteuerung der Kreissäge, ist es dabei vorteilhaft, die Mikrotaster 4 zu entprellen. Dies kann beispielsweise durch einen Tiefpassfilter, ein Flip-Flop oder durch einen Mikrocontroller mit entsprechender Software geschehen.In order to be able to use the plane contact signal emitted by the two
Abwandlungen und Modifikationen der gezeigten Ausführungsformen sind möglich, ohne den Rahmen der Erfindung zu verlassen.Modifications and modifications of the illustrated embodiments are possible without departing from the scope of the invention.
Claims (10)
- A push stick (3) for a table saw, comprising a gripping possibility for a machine operator at its operator-side end, wherein a workpiece engagement notch, which is spaced therefrom and is suitable for acting on the workpiece, is formed at its workpiece-side end, which notch comprises a push surface (1) facing in an intended feed direction of the workpiece and a holding-down surface (2) protruding therefrom at the top under a preferably right angle,
characterized in that
the push stick (3) comprises a detection device (4) which detects whether the push surface (1) and the holding-down surface (2) lie flat against the workpiece, as well as
a signalling device (5) which emits a respective flat contact signal in response to whether or not the detection device (4) has detected the flat contact of the push surface (1) and the holding-down surface (2) on the workpiece, which flat contact signal signals whether or not the push surface (1) and the holding-down surface (2) lie flat against the workpiece. - A push stick (3) according to claim 1, characterized in that the detection device (4) on the push surface (1) and on the holding-down surface (2) each comprise at least one pushbutton switch (4) which is recessed in such a way that actuation of the respective pushbutton switch (4) takes place only when the respective surface lies flat against the workpiece.
- A push stick (3) according to claim 2, characterized in that the detection device (4) comprises a respective micro-switch (4) on the push surface (1) and on the holding-down surface (2), wherein the two micro-switches (4) are switched in an AND gate, so that the detection device (4) detects flat contact only when both micro-switches (4) are actuated.
- A push stick according to claim 1, 2 or 3, characterized in that the detection device has an electro-optical or electro-acoustic scanning device which detects whether the push surface and the holding-down surface lie flat against the workpiece.
- A push stick (3) according to one of the preceding claims, characterized in that the signalling device (5) comprises an LED (5), which is illuminated under flat contact.
- A push stick according to one of the preceding claims, characterized in that the signalling device comprises a wire-bound or preferably wireless communication interface, via which the flat contact signal can be transmitted.
- A push stick according to one of the preceding claims, characterized in that the signalling device comprises a debouncing device for debouncing the flat contact signal, wherein the debouncing device preferably comprises a low-pass filter, a flip-flop and/or a microcontroller with debouncing software.
- A table saw with a push stick, characterized in that the push stick is formed according to one of the preceding claims.
- A table saw according to claim 8, characterized in that the push stick comprises the wire-bound or preferably wireless communication interface, via which the flat contact signal can be transmitted, and a machine controller of the table saw comprises a respective wire-bound or preferably wireless communication interface, via which the flat contact signal can be received, wherein the machine controller comprises an actuator and an actuating device for the actuator, which actuating device actuates the actuator in response to whether the flat contact signals as to whether or not the sliding surface and the holding-down surface lie flat against the workpiece.
- A table saw according to claim 9, characterized in that the actuator is an ON/OFF switch for driving the saw blade.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HUE16020359A HUE041970T2 (en) | 2016-09-28 | 2016-09-28 | Table saw and push stick for it |
SI201630213T SI3300869T1 (en) | 2016-09-28 | 2016-09-28 | Table saw and push stick for it |
DK16020359.2T DK3300869T3 (en) | 2016-09-28 | 2016-09-28 | TABLE SAFETY AND A PULL OF SHOP |
EP16020359.2A EP3300869B1 (en) | 2016-09-28 | 2016-09-28 | Table saw and push stick for it |
AU2017204589A AU2017204589B1 (en) | 2016-09-28 | 2017-07-05 | A Table Saw and a Push Stick for said Saw |
CN201710554496.0A CN107866866B (en) | 2016-09-28 | 2017-07-06 | Table saw and push rod for table saw |
CA2972522A CA2972522C (en) | 2016-09-28 | 2017-07-06 | A table saw and a push stick for said saw |
US15/656,627 US10252439B2 (en) | 2016-09-28 | 2017-07-21 | Table saw and push stick for the table saw |
HRP20190505TT HRP20190505T1 (en) | 2016-09-28 | 2019-03-13 | Table saw and push stick for it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16020359.2A EP3300869B1 (en) | 2016-09-28 | 2016-09-28 | Table saw and push stick for it |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3300869A1 EP3300869A1 (en) | 2018-04-04 |
EP3300869B1 true EP3300869B1 (en) | 2019-02-20 |
Family
ID=57083034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16020359.2A Not-in-force EP3300869B1 (en) | 2016-09-28 | 2016-09-28 | Table saw and push stick for it |
Country Status (9)
Country | Link |
---|---|
US (1) | US10252439B2 (en) |
EP (1) | EP3300869B1 (en) |
CN (1) | CN107866866B (en) |
AU (1) | AU2017204589B1 (en) |
CA (1) | CA2972522C (en) |
DK (1) | DK3300869T3 (en) |
HR (1) | HRP20190505T1 (en) |
HU (1) | HUE041970T2 (en) |
SI (1) | SI3300869T1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10394788B2 (en) * | 2016-11-04 | 2019-08-27 | International Business Machines Corporation | Schema-free in-graph indexing |
USD972418S1 (en) * | 2020-09-28 | 2022-12-13 | U.S. Tsubaki Holdings, Inc. | Chain wear indicator tool |
CN115056274B (en) * | 2022-05-10 | 2024-05-03 | 南京东秋淼信息科技有限公司 | Rubbing type separation pretreatment trolley for celosia seeds for medicinal materials |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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US2681671A (en) * | 1952-01-28 | 1954-06-22 | Russell E Norris | Push stick |
US4370909A (en) | 1981-03-06 | 1983-02-01 | Jennings G Craig | Hand guard for table mounted cutting tool |
DE8807690U1 (en) * | 1988-06-14 | 1988-07-28 | Trabert, Uwe, 8745 Ostheim | Sliding tool |
US6044740A (en) * | 1998-09-28 | 2000-04-04 | Werkheiser; Lester E. | Push stick |
US6135521A (en) * | 1998-11-13 | 2000-10-24 | Woodworker's Supply Inc. | Push stick |
US7359762B2 (en) * | 2002-04-18 | 2008-04-15 | Black & Decker Inc. | Measurement and alignment device including a display system |
DE202005010656U1 (en) | 2005-02-14 | 2005-11-10 | Junghans, Eckhard | Parallel guide stop for machine tool, has lever operated feed blade movable along straight line |
US8584564B2 (en) * | 2006-04-21 | 2013-11-19 | Black & Decker Inc. | Table saw |
TW200821116A (en) * | 2006-11-09 | 2008-05-16 | Rexon Ind Corp Ltd | Table saw machine |
CN100553841C (en) * | 2006-11-24 | 2009-10-28 | 力山工业股份有限公司 | Table saw machine |
WO2010059786A1 (en) * | 2008-11-19 | 2010-05-27 | Power Tool Institute | Safety mechanisms for power tools |
US7989718B1 (en) | 2009-05-08 | 2011-08-02 | Weber Eugene A | Power control engagement device for a power tool |
DE202010004458U1 (en) | 2010-03-24 | 2011-08-11 | Wilhelm Altendorf Gmbh & Co Kg | Safety device to prevent accidents at work on sawing machines, in particular circular saws, as well as circular saw |
US8616104B2 (en) * | 2010-07-12 | 2013-12-31 | Robert Bosch Gmbh | Portable table saw |
CN203460275U (en) * | 2013-06-26 | 2014-03-05 | 青岛地恩地机电科技股份有限公司 | Integrated multifunctional workpiece pushing device used for machine tool, and desk-type circular sawing machine |
US10384366B2 (en) * | 2014-09-29 | 2019-08-20 | Lowe's Companies, Inc. | Push-sticks for saws and storage systems thereof |
-
2016
- 2016-09-28 SI SI201630213T patent/SI3300869T1/en unknown
- 2016-09-28 HU HUE16020359A patent/HUE041970T2/en unknown
- 2016-09-28 DK DK16020359.2T patent/DK3300869T3/en active
- 2016-09-28 EP EP16020359.2A patent/EP3300869B1/en not_active Not-in-force
-
2017
- 2017-07-05 AU AU2017204589A patent/AU2017204589B1/en not_active Ceased
- 2017-07-06 CA CA2972522A patent/CA2972522C/en not_active Expired - Fee Related
- 2017-07-06 CN CN201710554496.0A patent/CN107866866B/en not_active Expired - Fee Related
- 2017-07-21 US US15/656,627 patent/US10252439B2/en not_active Expired - Fee Related
-
2019
- 2019-03-13 HR HRP20190505TT patent/HRP20190505T1/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
SI3300869T1 (en) | 2019-05-31 |
HRP20190505T1 (en) | 2019-08-09 |
CA2972522A1 (en) | 2018-03-28 |
US10252439B2 (en) | 2019-04-09 |
HUE041970T2 (en) | 2019-06-28 |
CN107866866B (en) | 2020-03-10 |
DK3300869T3 (en) | 2019-04-08 |
US20180085967A1 (en) | 2018-03-29 |
CA2972522C (en) | 2018-12-04 |
AU2017204589B1 (en) | 2018-03-15 |
CN107866866A (en) | 2018-04-03 |
EP3300869A1 (en) | 2018-04-04 |
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