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DE102009050551A1 - Device for measuring distance of circular hand saw that forms straight cut in wooden board, has distance displaying unit connected with distance determining unit so that distance covered from starting point to tool is represented at point - Google Patents

Device for measuring distance of circular hand saw that forms straight cut in wooden board, has distance displaying unit connected with distance determining unit so that distance covered from starting point to tool is represented at point Download PDF

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Publication number
DE102009050551A1
DE102009050551A1 DE200910050551 DE102009050551A DE102009050551A1 DE 102009050551 A1 DE102009050551 A1 DE 102009050551A1 DE 200910050551 DE200910050551 DE 200910050551 DE 102009050551 A DE102009050551 A DE 102009050551A DE 102009050551 A1 DE102009050551 A1 DE 102009050551A1
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Germany
Prior art keywords
distance
tool
starting point
point
guide rail
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DE200910050551
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German (de)
Inventor
Gerhard Arlart
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/22Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25HWORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/0021Stands, supports or guiding devices for positioning portable tools or for securing them to the work
    • B25H1/0078Guiding devices for hand tools
    • B25H1/0092Guiding devices for hand tools by optical means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The device has a distance displaying device i.e. magnetic tape (4), integrated into a guide rail (1), and a distance determining unit i.e. magnetoresistive sensor, fastened at an electric tool i.e. circular hand saw (2). The distance displaying unit is connected with the distance determining unit such that distance covered from a starting point to the tool residing in the guide rail in a guiding direction is visibly represented at the starting point at any time. A programmable processor unit considers a size and an immersion depth of the tool when the distance is determined.

Description

Die Erfindung betrifft eine Distanzmessvorrichtung für geführte Elektrowerkzeuge beispielsweise für Handkreissägen.The invention relates to a distance measuring device for guided power tools, for example for portable circular saws.

Um zum Beispiel mit einer Handkreissäge einen gerade Schnitt auszuführen, werden seit vielen Jahrzehnten bereits Führungsschienen, an denen die Handkreissäge oder auch andere Elektrowerkzeuge entlang geführt werden, erfolgreich eingesetzt.For example, in order to make a straight cut with a circular saw, guide rails, along which the portable circular saw or other power tools are guided, have already been used successfully for many decades.

Will der Anwender einen Ausschnitt aus einem Plattenwerkstoff aussägen oder auch eine Platte auf ein bestimmtes Maß zusägen, muss das gewünschte Maß zuerst auf dem Werkstück aufgerissen werden. Ein solcher Vorgang ist erfahrungsgemäß zeitaufwändig und zudem nicht ohne weiteres mit der nötigen Präzision zu bewerkstelligen. Um ohne den beschriebenen Messvorgang auszukommen, könnte die Führungsschiene mit einer Skala ausgestattet werden, damit die gesägte Distanz direkt abgelesen werden kann. Das stellte zwar einerseits eine gewisse Erleichterung dar, hat aber in der Praxis bedeutende Nachteile, weswegen von dieser Möglichkeit auch kein Gebrauch gemacht wird.If the user wants to saw out a section of a board material or also saw a plate to a certain extent, the desired dimension must first be torn open on the workpiece. Experience has shown that such an operation is time-consuming and, moreover, can not be accomplished with the necessary precision without further ado. In order to do without the described measuring process, the guide rail could be equipped with a scale so that the sawn distance can be read directly. Although this was on the one hand a certain relief, but has significant disadvantages in practice, which is why this possibility is not used.

Ein Nachteil wäre dabei, dass jede Skala einen Nullpunkt hat und dieser kaum mit dem Startpunkt des Sägeschnittes in Übereinstimmung gebracht werden kann. Eine Rechnung ließe sich also nicht vermeiden. Denkbar ist auch, die Führungsschiene vor jedem Sägevorgang solange in ihrer Längsrichtung zu verschieben, bis eine Übereinstimmung mit dem Nullpunkt der Skala vorhanden wäre. Oder die Skala müsste verschiebbar auf der Führungsschiene installiert sein, was aber bei langen Führungsschienen technisch nur schwer lösbar sowie verschleißanfällig wäre. Zudem müsste der Anwender die durch den Durchmesser des Sägeblattes bedingte Länge des Sägeschnittes, der bereits beim Eintauchen des Sägeblattes entsteht und zudem noch von der Eintauchtiefe abhängig ist, berücksichtigen. Also auch in diesem Fall wären eine Rechnung und ein genaues Überlegen notwendig, so dass ein Aufreißen der Größe auf dem Werkstück sicher die wesentlich schnellere und einfachere Lösung bleibt.A disadvantage would be that each scale has a zero point and this can hardly be brought into line with the starting point of the saw cut. An invoice could not be avoided. It is also conceivable to move the guide rail before each sawing process in their longitudinal direction until a match with the zero point of the scale would be present. Or the scale would have to be slidably installed on the guide rail, but this would be technically difficult to solve and susceptible to wear on long guide rails. In addition, the user would have to take into account the length of the saw cut caused by the diameter of the saw blade, which already arises when the saw blade plunges in and is also dependent on the immersion depth. So even in this case, an invoice and a careful consideration would be necessary so that a rupture of the size on the workpiece certainly remains the much faster and easier solution.

Um dem Anwender dennoch eine Möglichkeit zu bieten, sich den Messvorgang zu ersparen und an jeder Stelle entlang einer Führungsschiene die genaue Position eines Elektrowerkzeuges bzw. dessen beispielsweisen Schneidwerkzeuges in Bezug auf einen beliebigen Startpunkt unter Berücksichtigung der Werkzeuggröße sowie der Eintauchtiefe übermittelt zu bekommen, schlägt die Erfindung eine Distanzmessvorrichtung für schienengeführte Elektrowerkzeuge vor.In order to still provide the user with a way to save the measuring process and to get transmitted at any point along a guide rail, the exact position of a power tool or its exemplary cutting tool with respect to any starting point, taking into account the tool size and the immersion depth, suggests the Invention, a distance measuring device for rail-mounted power tools.

Die Distanzmessvorrichtung besteht danach im Wesentlichen aus drei Komponenten, nämlich eine Distanz angebende, eine Distanz erfassende und eine Distanz anzeigende Einheit.The distance measuring device consists essentially of three components, namely a distance indicating, a distance detecting and a distance indicating unit.

Die Distanz angebende Einheit ist in einem Ausführungsbeispiel an einer Führungsschiene für Elektrowerkzeuge in Form eines handelsüblichen Magnetbandes befestigt. Solche Magnetbänder werden u. a. im Maschinenbau zur Positionierung von Anschlägen an Sägen, Abkantpressen oder ähnlichen Maschinen erfolgreich eingesetzt. Sie sind in regelmäßigen Abschnitten mit magnetischen Nord- und Südpolen magnetisiert.The distance indicating unit is attached in one embodiment to a guide rail for power tools in the form of a commercially available magnetic tape. Such magnetic tapes are u. a. used successfully in mechanical engineering for the positioning of stops on saws, press brakes or similar machines. They are magnetized at regular intervals with magnetic north and south poles.

Die Distanz erfassende Einheit besteht im genannten Ausführungsbeispiel aus einem magnetoresistiven Sensor, der die durch die besondere Art der Magnetisierung des Bandes entstandenen sinusförmigen Magnetfelder oberhalb des magnetischen Maßbandes berührungslos abtastet. Der Sensor wiederum ist am jeweiligen an der Führungsschiene entlang bewegten Elektrowerkzeug befestigt.The distance-detecting unit consists in the aforementioned embodiment of a magnetoresistive sensor which scans the resulting due to the special nature of the magnetization of the band sinusoidal magnetic fields above the magnetic tape measure without contact. The sensor, in turn, is attached to the respective power tool moving along the guide rail.

Die Distanz anzeigende Einheit ist vorzugsweise ebenso am genannten Elektrowerkzeug befestigt. Sie steht in direkter Verbindung mit dem Sensor und ist als ein Anzeigefeld ausgebildet, das die von einem Startpunkt mittels Sensor aus gemessene Strecke als Zahlenwert anzeigt. Eine integrierte kleine Rechnereinheit ermöglicht dem Anwender per Tastendruck den Startpunkt des Elektrowerkzeuges an jeder Stelle der Führungsschiene als Nullpunkt festzulegen und gleichzeitig die Größe des Werkzeuges, z. B. des Sägeblattdurchmessers, über Tasten in die Rechnereinheit einzugeben, so dass diese Größe bei einer zurückgelegten Wegstrecke entlang der Führungsschiene Berücksichtigung findet. Der Anwender kann nach solcher Vorgehensweise die Länge eines beispielsweisen Sägeschnittes direkt an der Anzeige ablesen, so dass weiteres Rechnen entfällt.The distance indicating unit is preferably also attached to said power tool. It is in direct communication with the sensor and is designed as a display field which displays the distance measured from a starting point by means of a sensor as a numerical value. An integrated small computer unit allows the user by pressing a button to set the starting point of the power tool at each point of the guide rail as the zero point and at the same time the size of the tool, for. As the saw blade diameter to enter via buttons in the computer unit, so that this size is taken into account in a covered distance along the guide rail. After such a procedure, the user can read the length of an exemplary saw cut directly on the display so that further calculation is not necessary.

Im Folgenden wird die Erfindung anhand eines Ausführungsbeispiels in Verbindung mit begleitenden Zeichnungen näher erläutert. Es zeigen:In the following the invention will be explained in more detail with reference to an embodiment in conjunction with accompanying drawings. Show it:

1 eine Draufsicht einer auf einer Führungsschiene befindlichen Handkreissäge mit Distanzmessvorrichtung; 1 a plan view of a guide rail located on a circular saw with distance measuring device;

2 eine Schnittdarstellung entlang der Linie A-A aus 1; 2 a sectional view taken along the line AA 1 ;

In 1 ist eine insgesamt als 2 bezeichnete Handkreissäge auf einer Führungsschiene 1 dargestellt. Die Handkreissäge 2 wird mit Hilfe der Führungsfeder 6 und einer im Tisch 5 der Handkreissäge 2 befindlichen Nut entlang der Führungsschiene 1 geführt. Eine Vertiefung auf der gesamten Länge der Führungsschiene 1 dient zur Aufnahme des Magnetbandes 4.In 1 is a total as 2 designated circular saw on a guide rail 1 shown. The circular saw 2 is using the guide spring 6 and one in the table 5 the circular saw 2 located groove along the guide rail 1 guided. A depression along the entire length of the guide rail 1 serves to accommodate the magnetic tape 4 ,

Der im Schnitt dargestellte und an der Handkreissäge 2 unterhalb des Anzeigefeldes 3 befestigte Sensor 7 in 2 tastet das Magnetband 4 beim Schieben der Handkreissäge 2 ab, wobei die jeweilige Distanz zu einem beliebigen Startpunkt auf der Führungsschiene 1 sofort im Anzeigefeld 3 sichtbar ist.The section shown and on the circular saw 2 below the display field 3 attached sensor 7 in 2 feels the magnetic tape 4 when sliding the circular saw 2 from, with the respective distance to any starting point on the guide rail 1 immediately in the display field 3 is visible.

Claims (3)

Distanzmessvorrichtung für geführte Elektrowerkzeuge, gekennzeichnet durch eine in der Führungsschiene (1) integrierte eine Distanz angebende Einheit, eine an einem Elektrowerkzeug beispielsweise einer Handkreissäge (2) befestigte die Distanz erfassende Einheit und einer mit letzterer verbundenen, anzeigenden Einheit, derart, dass die von einem beliebigen Startpunkt eines auf einer Führungsschiene (1) befindlichen Elektrowerkzeuges aus in Führungsrichtung zurückgelegte Distanz zu diesem Startpunkt jederzeit sichtbar dargestellt wird.Distance measuring device for guided power tools, characterized by a in the guide rail ( 1 ) integrated a distance indicating unit, one on a power tool such as a portable circular saw ( 2 ) fixed the distance detecting unit and a display unit connected to the latter, such that the from any starting point of a on a guide rail ( 1 ) located power tool from distance traveled in the guide direction distance to this starting point is always visible visible. Distanzmessvorrichtung für geführte Elektrowerkzeuge nach Anspruch 1, dadurch gekennzeichnet, dass die die Distanz angebende Einheit als Magnetband (4) und die die Distanz erfassende Einheit als magnetoresistiver Sensor ausgebildet ist.Distance measuring device for guided power tools according to claim 1, characterized in that the distance indicating unit as a magnetic tape ( 4 ) and the distance-detecting unit is designed as a magnetoresistive sensor. Distanzmessvorrichtung für geführte Elektrowerkzeuge nach Anspruch 1, dadurch gekennzeichnet, dass eine programmierbare Rechnereinheit die Berücksichtigung der Größe sowie der Eintauchtiefe des in einem Elektrowerkzeug eingesetzten Werkzeuges ermöglicht.Distance measuring device for guided power tools according to claim 1, characterized in that a programmable computer unit allows the consideration of the size and the immersion depth of the tool used in a power tool.
DE200910050551 2009-10-23 2009-10-23 Device for measuring distance of circular hand saw that forms straight cut in wooden board, has distance displaying unit connected with distance determining unit so that distance covered from starting point to tool is represented at point Withdrawn DE102009050551A1 (en)

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DE200910050551 DE102009050551A1 (en) 2009-10-23 2009-10-23 Device for measuring distance of circular hand saw that forms straight cut in wooden board, has distance displaying unit connected with distance determining unit so that distance covered from starting point to tool is represented at point

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DE200910050551 DE102009050551A1 (en) 2009-10-23 2009-10-23 Device for measuring distance of circular hand saw that forms straight cut in wooden board, has distance displaying unit connected with distance determining unit so that distance covered from starting point to tool is represented at point

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013217290A1 (en) 2013-08-29 2015-03-05 Robert Bosch Gmbh Hand machine tool information device
DE102018221800A1 (en) * 2018-12-14 2020-06-18 Robert Bosch Gmbh Hand machine tool, guide rail and hand machine tool system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3221709A1 (en) * 1982-06-09 1983-12-15 Robert 5446 Engeln Wolff Drill stand with drilling-stroke indicator
DE19637170A1 (en) * 1996-09-12 1998-03-26 Ant Panhans Werkzeug Masch Stop system for a circular saw
EP1586429B1 (en) * 2004-04-13 2008-04-02 Robert Bosch Gmbh Table saw having a measurement and display system
DE102008000198A1 (en) * 2008-01-31 2009-08-06 Robert Bosch Gmbh device system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3221709A1 (en) * 1982-06-09 1983-12-15 Robert 5446 Engeln Wolff Drill stand with drilling-stroke indicator
DE19637170A1 (en) * 1996-09-12 1998-03-26 Ant Panhans Werkzeug Masch Stop system for a circular saw
EP1586429B1 (en) * 2004-04-13 2008-04-02 Robert Bosch Gmbh Table saw having a measurement and display system
DE102008000198A1 (en) * 2008-01-31 2009-08-06 Robert Bosch Gmbh device system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013217290A1 (en) 2013-08-29 2015-03-05 Robert Bosch Gmbh Hand machine tool information device
US20150059186A1 (en) * 2013-08-29 2015-03-05 Robert Bosch Gmbh Hand-held power tool information device
CN104416548A (en) * 2013-08-29 2015-03-18 罗伯特·博世有限公司 Hand-held power tool information device
DE102013217290B4 (en) 2013-08-29 2020-07-23 Robert Bosch Gmbh Hand machine tool information device
DE102018221800A1 (en) * 2018-12-14 2020-06-18 Robert Bosch Gmbh Hand machine tool, guide rail and hand machine tool system

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Effective date: 20120501