EP0175643B1 - Drill stand with guide bar - Google Patents

Drill stand with guide bar Download PDF

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Publication number
EP0175643B1
EP0175643B1 EP85810397A EP85810397A EP0175643B1 EP 0175643 B1 EP0175643 B1 EP 0175643B1 EP 85810397 A EP85810397 A EP 85810397A EP 85810397 A EP85810397 A EP 85810397A EP 0175643 B1 EP0175643 B1 EP 0175643B1
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EP
European Patent Office
Prior art keywords
drilling device
guide column
supports
drilling
guide
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.)
Expired
Application number
EP85810397A
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German (de)
French (fr)
Other versions
EP0175643A1 (en
Inventor
Wolfgang Erdt
Rudolf Reitberger
Erwin Stocker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
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Filing date
Publication date
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Priority to AT85810397T priority Critical patent/ATE39635T1/en
Publication of EP0175643A1 publication Critical patent/EP0175643A1/en
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Publication of EP0175643B1 publication Critical patent/EP0175643B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/0021—Stands, supports or guiding devices for positioning portable tools or for securing them to the work
    • B25H1/0057—Devices for securing hand tools to the work
    • B25H1/0064—Stands attached to the workpiece
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S408/00—Cutting by use of rotating axially moving tool
    • Y10S408/712—Drill press adapted to use portable hand drill
    • 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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/91—Machine frame
    • 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
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/309576—Machine frame

Definitions

  • the invention relates to a tripod drilling device with a base plate, a guide column connected to the base plate and consisting of two supports arranged at a lateral distance from one another and having the same cross section, and a drilling device which can be displaced along the guide column, the guide column and the drilling device having mutually corresponding guide means.
  • drilling devices of the type mentioned above have also been used as mobile devices in the construction industry for some time.
  • a mobile device US Pat. No. 3,890,058
  • US Pat. No. 3,890,058 has a base plate and two supports connected to it, between which a hand drill guided on the supports can be displaced against the force of return springs.
  • the device is used in particular to drill holes at a certain angle to the surface of the subsurface and from a certain depth.
  • the performance of the drilling device used and thus the reaction forces and moments that occur are relatively small. Therefore, the demands made on the guide column formed by the supports are rather low in terms of bending and torsional rigidity.
  • drill bits are mainly used together with diamond-tipped drill bits. Such drill bits can be used to produce breakthroughs of larger diameter even in structures provided with iron reinforcements, provided the drill has a correspondingly high output.
  • a major problem with these drilling devices is the guidance of the drilling device. Due to the outreach of the drilling device required for the largest borehole diameter and the forces to be exerted with the larger tools, large bending and torsional loads can occur on the guide column.
  • the drilling devices must be mobile and, if possible, one or at most two people must be able to handle them.
  • the guide column can therefore not be reinforced arbitrarily due to the increasing total weight of the drilling device.
  • the guide column has a U-shaped or C-shaped cross section.
  • the drill is mounted on guides inside the guide column.
  • the processing of the guides by their arrangement inside such a guide column is very complex and can usually only be done with special tools. Since, due to the cross-sectional design, only the part of the drilling device provided with the bearing for the drilling spindle can protrude beyond the guide column, the feed device for the drilling device must also be arranged inside the guide column. This means that a complex construction with gear, threaded spindle and threaded nut is required.
  • the invention has for its object to provide a tripod drilling device, the guide column has a high bending and torsional rigidity and allows easy feeding of the drill.
  • the object is achieved in that the beams are essentially L-shaped in cross section and carry gripping means designed as a rack for a feed device arranged on the drilling device and guiding means designed as dovetail-shaped strips, with the rack and strips on opposite sides of mutually pointing legs Carriers are arranged.
  • Beams which are L-shaped in cross section have high bending rigidity in two perpendicular directions.
  • the torsional rigidity of such carriers is relatively high, the arrangement of the engagement means designed as toothed racks still contributing to increasing both the bending and torsional rigidity.
  • the beams can also be reinforced with ribs.
  • the feed device arranged on the drilling device consists in a simple manner of a pinion which is connected to the engagement means designed as a rack.
  • a pinion can either be driven manually via a handwheel or a motor.
  • the drive shaft for the pinion can be provided with driving means at both ends, so that the handwheel can be attached to the left or right side of the drilling device, depending on the position of the drilling device.
  • guide means as dovetail-shaped strips leads to a further stiffening of the beams.
  • guide means designed as dovetail-shaped strips allow simple adjustment of the operating play.
  • such strips can be easily machined, for example by machining, since on the one hand the arrangement of two supports and on the other hand the shape of the profile ensures good accessibility.
  • the guide column required for this is relatively long.
  • the guide column By designing the guide column as two individual supports, it is possible for the free ends of the supports to bend towards or away from one another.
  • a cover plate connecting the carriers to one another at the end of the carrier opposite the base plate.
  • the cover plate can be screwed, riveted or welded to the free ends of the carrier.
  • such a cover plate also fulfills another function. In this way, the rear end position of the drilling device can be limited by the cover plate and inadvertent movement out of the guide column can be prevented.
  • An advantageous embodiment consists in that the engagement means on the carriers are designed as a toothed rack for the feed device arranged on the drilling device.
  • a feed device working by means of a rack enables the use of standardized components. If the stroke of a tripod drilling device according to the invention is to be changed subsequently, for example by lengthening or replacing the guide column, the toothed rack can be used again and can also be lengthened by a corresponding amount. Racks can also be purchased as standard yard goods and adjusted to the length of the guide column.
  • the stand drilling device according to the invention shown in FIGS. 1 and 2 has a base plate 1 and a guide column, designated overall by 2, connected to the base plate 1.
  • the guide column 2 consists of two supports 2a, 2b arranged at a lateral distance from one another and running parallel to one another. The ends of the supports 2a, 2b opposite the base plate 1 are connected to one another via a cover plate 3.
  • a drilling device generally designated 4 is slidably arranged.
  • the drilling device 4 is connected to a tool holder 5, in which a drilling tool 6 is inserted.
  • the carriers 2a, 2b have dovetail-shaped strips 2c, 2d which are in engagement with correspondingly designed counter profiles 7.
  • the counter profiles 7 are detachably connected to the drilling device 4. If necessary, the counter profiles 7 can thus be replaced quickly and easily.
  • the drilling device 4 has a drive motor 4a and two arms 4b, 4c projecting laterally.
  • the arms 4b, 4c are also provided with interchangeable jaws 8, which are supported on the front edge of the carrier 2a, 2b.
  • the carrier 2b is connected to a rack 9.
  • This toothed rack 9 serves to feed the drill 4.
  • a drive shaft designated overall by 10
  • the drive shaft 10 is provided with a pinion 10 a, which is in engagement with the rack 9.
  • this has a polygon 10b at both ends.
  • a handwheel 12 is attached to the polygon 10b.
  • the handwheel 12 can also be removed and placed on the polygon 10b on the opposite side.
  • a stop 13 is provided to limit the drilling depth.
  • This stop 13 can be locked in any position with the aid of a sliding block 14 guided in a dovetail-shaped groove 2e, 2f and a clamping lever 15. If necessary, the stop 13 can also be arranged on the other support 2a. Since the two beams 2a, 2b have the same cross-section, they can easily be produced from the same profiles. This enables the profile to be produced in larger quantities and therefore more economically.

Abstract

A drill stand includes a base plate, an elongated guide column extending outwardly from the base plate and a drilling device movably supported on the column. The guide column is formed of two laterally spaced elongated support members each having the same cross-section transversely of the elongated direction. A drilling device is positioned between the two support members. A rack is secured to the guide column and a feed mechanism for moving the drilling device includes a pinion in meshed engagement with the rack. Guide members on the support members fit into correspondingly shaped guide grooves on the drilling device.

Description

Die Erfindung betrifft eine Stativbohrvorrichtung mit einer Fussplatte, einer mit der Fussplatte verbundenen, aus zwei in seitlichem Abstand voneinander angeordneten, den gleichen Querschnitt aufweisenden Trägern bestehenden Führungssäule und einem längs der Führungssäule verschiebbaren Bohrgerät, wobei die Führungssäule und das Bohrgerät miteinander korrespondierende Führungsmittel aufweisen.The invention relates to a tripod drilling device with a base plate, a guide column connected to the base plate and consisting of two supports arranged at a lateral distance from one another and having the same cross section, and a drilling device which can be displaced along the guide column, the guide column and the drilling device having mutually corresponding guide means.

Neben den bisher aus der Metallbearbeitung bekannten, stationären Bohrvorrichtungen (DE-OS-3 221 709) werden Bohrvorrichtungen der oben genannten Art seit einiger Zeit auch als mobile Geräte im Bauwesen verwendet. Eine solche mobile Vorrichtung (US-PS-3 890 058) weist eine Fussplatte und zwei damit verbundene Träger auf, zwischen denen ein an den Trägern geführtes Handbohrgerät gegen die Kraft von Rückstellfedern verschiebbar ist. Die Vorrichtung dient insbesondere dazu, Bohrungen unter einem bestimmten Winkel zur Oberfläche des Untergrundes und von einer bestimmten Tiefe herzustellen. Die Leistung des eingesetzten Bohrgerätes und damit die auftretenden Reaktionskräfte und -momente sind jedoch relativ klein. Daher sind die Anforderungen an die durch die Träger gebildete Führungssäule bezüglich der Biege- und Torsionssteifigkeit eher gering.In addition to the stationary drilling devices previously known from metalworking (DE-OS-3 221 709), drilling devices of the type mentioned above have also been used as mobile devices in the construction industry for some time. Such a mobile device (US Pat. No. 3,890,058) has a base plate and two supports connected to it, between which a hand drill guided on the supports can be displaced against the force of return springs. The device is used in particular to drill holes at a certain angle to the surface of the subsurface and from a certain depth. However, the performance of the drilling device used and thus the reaction forces and moments that occur are relatively small. Therefore, the demands made on the guide column formed by the supports are rather low in terms of bending and torsional rigidity.

Weitere bekannte Bohrvorrichtungen werden hauptsächlich zusammen mit diamantbestückten Bohrkronen eingesetzt. Mit solchen Bohrkronen können bei entsprechend hoher Leistung des Bohrgerätes auch in mit Eisenarmierungen versehenen Bauwerken Durchbrüche von grösserem Durchmesser hergestellt werden. Ein wesentliches Problem bei diesen Bohrvorrichtungen besteht in der Führung des Bohrgerätes. Durch die für den grössten Bohrlochdurchmesser erforderliche Ausladung des Bohrgerätes sowie die bei den grösseren Werkzeugen aufzubringenden Kräfte können an der Führungssäule grosse Biege- und Torsionsbelastungen auftreten.Other known drilling devices are mainly used together with diamond-tipped drill bits. Such drill bits can be used to produce breakthroughs of larger diameter even in structures provided with iron reinforcements, provided the drill has a correspondingly high output. A major problem with these drilling devices is the guidance of the drilling device. Due to the outreach of the drilling device required for the largest borehole diameter and the forces to be exerted with the larger tools, large bending and torsional loads can occur on the guide column.

Die Bohrvorrichtungen müssen mobil sein und möglichst von einer oder höchstens zwei Personen gehandhabt werden können. Die Führungssäule kann somit aufgrund des sich erhöhenden Gesamtgewichtes der Bohrvorrichtung nicht beliebig verstärkt werden.The drilling devices must be mobile and, if possible, one or at most two people must be able to handle them. The guide column can therefore not be reinforced arbitrarily due to the increasing total weight of the drilling device.

Bei bekannten Bohrvorrichtungen weist die Führungssäule einen U- oder C-förmigen Querschnitt auf. Das Bohrgerät ist dabei an Führungen im Innern der Führungssäule gelagert. Das Bearbeiten der Führungen durch deren Anordnung im Innern einer solchen Führungssäule ist sehr aufwendig und kann meist nur mit Spezialwerkzeugen vorgenommen werden. Da aufgrund der Querschnittsgestaltung nur der mit der Lagerung für die Bohrspindel versehene Teil des Bohrgerätes über die Führungssäule hinausragen kann, muss die Vorschubeinrichtung für das Bohrgerät ebenfalls im Innern der Führungssäule angeordnet werden. Somit ist eine aufwenige Konstruktion mit Getriebe, Gewindespindel und Gewindemutter erforderlich.In known drilling devices, the guide column has a U-shaped or C-shaped cross section. The drill is mounted on guides inside the guide column. The processing of the guides by their arrangement inside such a guide column is very complex and can usually only be done with special tools. Since, due to the cross-sectional design, only the part of the drilling device provided with the bearing for the drilling spindle can protrude beyond the guide column, the feed device for the drilling device must also be arranged inside the guide column. This means that a complex construction with gear, threaded spindle and threaded nut is required.

Der Erfindung liegt die Aufgabe zugrunde, eine Stativbohrvorrichtung zu schaffen, deren Führungssäule eine hohe Biege- und Torsionssteifigkeit aufweist und die einen einfachen Vorschub des Bohrgerätes ermöglicht.The invention has for its object to provide a tripod drilling device, the guide column has a high bending and torsional rigidity and allows easy feeding of the drill.

Erfindungsgemäss wird die Aufgabe dadurch gelöst, die Träger im Querschnitt im wesentlichen L-förmig ausgebildet sind und als Zahnstange ausgebildete Angriffsmittel für eine am Bohrgerät angeordnete Vorschubeinrichtung sowie als schwalbenschwanzförmige Leisten ausgebildete Führungsmittel tragen, wobei Zahnstange und Leisten an einander gegenüberliegenden Seiten von gegeneinander weisenden Schenkeln der Träger angeordnet sind.According to the invention, the object is achieved in that the beams are essentially L-shaped in cross section and carry gripping means designed as a rack for a feed device arranged on the drilling device and guiding means designed as dovetail-shaped strips, with the rack and strips on opposite sides of mutually pointing legs Carriers are arranged.

Im Querschnitt L-förmig ausgebildete Träger weisen in zwei senkrecht stehenden Richtungen eine hohe Biegesteifigkeit auf. Darüber hinaus ist die Torsionssteifigkeit solcher Träger relativ hoch, wobei zur Erhöhung sowohl der Biege- als auch der Torsionsteifigkeit die Anordnung der als Zahnstangen ausgebildeten Angriffsmittel noch beiträgt. Bei Bedarf können die Träger zusätzlich noch mit Rippen weiter ausgesteift werden.Beams which are L-shaped in cross section have high bending rigidity in two perpendicular directions. In addition, the torsional rigidity of such carriers is relatively high, the arrangement of the engagement means designed as toothed racks still contributing to increasing both the bending and torsional rigidity. If necessary, the beams can also be reinforced with ribs.

Die am Bohrgerät angeordnete Vorschubeinrichtung besteht in einfacher Weise aus einem Ritzel, welches mit den als Zahnstange ausgebildeten Angriffsmitteln in Verbindung steht. Ein solches Ritzel kann entweder über ein Handrad manuell oder einen Motor angetrieben werden. Im Falle einer manuellen Betätigung des Vorschubes, kann die Antriebswelle für das Ritzel an beiden Enden mit Mitnahmemitteln versehen sein, so dass das Handrad je nach Lage der Bohrvorrichtung auf der linken oder auf der rechten Seite des Bohrgerätes angesetzt werden kann.The feed device arranged on the drilling device consists in a simple manner of a pinion which is connected to the engagement means designed as a rack. Such a pinion can either be driven manually via a handwheel or a motor. In the case of manual actuation of the feed, the drive shaft for the pinion can be provided with driving means at both ends, so that the handwheel can be attached to the left or right side of the drilling device, depending on the position of the drilling device.

Die Ausbildung der Führungsmittel als schwalbenschwanzförmige Leisten, führt zu einer weiteren Versteifung der Träger. Darüber hinaus ermöglichen als schwalbenschwanzförmige Leisten ausgebildete Führungsmittel ein einfaches Einstellen des Betriebsspieles. In Verbindung mit der erfindungsgemäss vorgeschlagenen L-förmigen Ausbildung der Träger sind solche Leisten einfach bearbeitbar, beispielsweise spanabhebend, da einerseits die Anordnung von zwei Trägern und andererseits die Form des Profils eine gute Zugänglichkeit gewährleistet.The design of the guide means as dovetail-shaped strips leads to a further stiffening of the beams. In addition, guide means designed as dovetail-shaped strips allow simple adjustment of the operating play. In conjunction with the L-shaped design of the supports proposed according to the invention, such strips can be easily machined, for example by machining, since on the one hand the arrangement of two supports and on the other hand the shape of the profile ensures good accessibility.

Die Anordnung von Zahnstangen und Leisten an einander gegenüberliegenden Seiten von gegeneinander weisenden Schenkeln der Träger führt zu einer vor Verschmutzung geschützten Anordnung der Zahnstangen, da somit nur die Leisten dem Bohrgerät und damit der Verschmutzungsquelle zugewandt sind.The arrangement of racks and strips on opposite sides of mutually facing legs of the carrier leads to an arrangement of the racks protected from contamination, since only the strips thus face the drilling device and thus the source of contamination.

Damit demselben Gerät sowohl dünne als auch dicke Wände, Decken und Böden durchbohrt werden müssen, ist die dazu erforderliche Führungsäule relativ lang. Durch die Ausbildung der Führungssäule als zwei einzelne Träger besteht die Möglichkeit, dass sich die freien Enden der Träger zueinander oder voneinander weg biegen. Um dies zu vermeiden, ist es zweckmässig, an dem der Fussplatte entgegengesetzten Ende der Träger eine die Träger miteinander verbindende Deckplatte anzuordnen. Die Deckplatte kann mit den freien Enden der Träger verschraubt, vernietet oder verschweisst werden. Neben dem Verbinden der Träger erfüllt eine solche Deckplatte jedoch noch eine andere Funktion. So kann durch die Deckplatte die rückwärtige Endstellung des Bohrgerätes begrenzt und ein versehentliches Ausfahren aus der Führungssäule verhindert werden.So that the same device can pierce both thin and thick walls, ceilings and floors the guide column required for this is relatively long. By designing the guide column as two individual supports, it is possible for the free ends of the supports to bend towards or away from one another. In order to avoid this, it is expedient to arrange a cover plate connecting the carriers to one another at the end of the carrier opposite the base plate. The cover plate can be screwed, riveted or welded to the free ends of the carrier. In addition to connecting the supports, such a cover plate also fulfills another function. In this way, the rear end position of the drilling device can be limited by the cover plate and inadvertent movement out of the guide column can be prevented.

Durch das beidseitig offene Profil der Führungssäule kann das Bohrgerät die Führungssäule auch auf der der Bohrspindel gegenüberliegenden Seite überragen. Somit ist es möglich, den Vorschubantrieb ausserhalb der Führungssäule anzuordnen. Eine vorteilhafte Ausbildung besteht darin, dass die Angriffsmittel an den Trägern als Zahnstange für die am Bohrgerät angeordnete Vorschubeinrichtung ausgebildet sind. Eine mittels einer Zahnstange arbeitende Vorschubeinrichtung ermöglicht die Verwendung genormter Bauteile. Falls der Hub eines erfindungsgemässen Stativbohrgerätes nachträglich geändert werden soll, beispielsweise durch Verlängerung oder Austausch der Führungssäule, kann die Zahnstange wieder verwendet und ebenfalls um ein entsprechendes Stück verlängert werden. Zahnstangen können auch als genormte Meterware bezogen und der Länge der Führungssäule entsprechend angepasst werden.Due to the profile of the guide column, which is open on both sides, the drilling device can also project beyond the guide column on the side opposite the drilling spindle. It is therefore possible to arrange the feed drive outside the guide column. An advantageous embodiment consists in that the engagement means on the carriers are designed as a toothed rack for the feed device arranged on the drilling device. A feed device working by means of a rack enables the use of standardized components. If the stroke of a tripod drilling device according to the invention is to be changed subsequently, for example by lengthening or replacing the guide column, the toothed rack can be used again and can also be lengthened by a corresponding amount. Racks can also be purchased as standard yard goods and adjusted to the length of the guide column.

Die Erfindung soll nachstehend anhand der sie beispielsweise wiedergebenden Zeichnungen näher erläutert werden. Es zeigen:

  • Fig. 1 eine erfindungsgemässe Stativbohrvorrichtung, teilweise geschnitten, entlang der Linie I - I in Fig. 2 dargestellt,
  • Fig. 2 einen Querschnitt durch die aus Fig. 1 ersichtliche Stativbohrvorrichtung, entlang der Linie 11 - 11.
The invention will be explained in more detail below with reference to the drawings, for example. Show it:
  • 1 shows a tripod drilling device according to the invention, partially in section, along the line I - I in FIG. 2,
  • FIG. 2 shows a cross section through the stand drilling device shown in FIG. 1, along the line 11-11.

Die aus den Fig. 1 und 2 ersichtliche erfindungsgemässe Stativbohrvorrichtung weist eine Fussplatte 1 und eine insgesamt mit 2 bezeichnete, mit der Fussplatte 1 verbundene Führungssäule auf. Die Führungssäule 2 besteht aus zwei in seitlichem Abstand voneinander angeordneten, parallel zueinander verlaufenden Trägern 2a, 2b. Die der Fussplatte 1 entgegengesetzten Enden der Träger 2a, 2b sind über eine Deckplatte 3 miteinander verbunden. Zwischen beiden Trägern 2a, 2b ist ein insgesamt mit 4 bezeichnetes Bohrgerät verschiebbar angeordnet. Das Bohrgerät 4 ist mit einem Werkzeughalter 5 verbunden, in den ein Bohrwerkzeug 6 eingesetzt ist. Zur Führung des Bohrgerätes 4 weisen die Träger 2a, 2b schwalbenschwanzförmige Leisten 2c, 2d auf, die mit entsprechend ausgebildeten Gegenprofilen 7 in Eingriff stehen. Die Gegenprofile 7 sind lösbar mit dem Bohrgerät 4 verbunden. Im Bedarfsfall können die Gegenprofile 7 somit rasch und einfach ausgewechselt werden. Das Bohrgerät 4 weist einen Antriebsmotor 4a sowie zwei seitlich wegragende Arme 4b, 4c auf. Die Arme 4b, 4c sind mit ebenfalls auswechselbaren Backen 8 versehen, welche sich an der Stirnkante der Träger 2a, 2b abstützen. Der Träger 2b ist mit einer Zahnstange 9 verbunden.The stand drilling device according to the invention shown in FIGS. 1 and 2 has a base plate 1 and a guide column, designated overall by 2, connected to the base plate 1. The guide column 2 consists of two supports 2a, 2b arranged at a lateral distance from one another and running parallel to one another. The ends of the supports 2a, 2b opposite the base plate 1 are connected to one another via a cover plate 3. Between the two beams 2a, 2b, a drilling device, generally designated 4, is slidably arranged. The drilling device 4 is connected to a tool holder 5, in which a drilling tool 6 is inserted. To guide the drilling device 4, the carriers 2a, 2b have dovetail-shaped strips 2c, 2d which are in engagement with correspondingly designed counter profiles 7. The counter profiles 7 are detachably connected to the drilling device 4. If necessary, the counter profiles 7 can thus be replaced quickly and easily. The drilling device 4 has a drive motor 4a and two arms 4b, 4c projecting laterally. The arms 4b, 4c are also provided with interchangeable jaws 8, which are supported on the front edge of the carrier 2a, 2b. The carrier 2b is connected to a rack 9.

Diese Zahnstange 9 dient dem Vorschubantrieb des Bohrgerätes 4. Zu diesem Zweck ist eine insgesamt mit 10 bezeichnete Antriebswelle am Bohrgerät 4 drehbar gelagert. Die Antriebswelle 10 ist mit einem Ritzel 10a versehen, welches mit der Zahnstange 9 in Eingriff steht. Für die Betätigung der Antriebswelle 10 weist diese an beiden Enden einen Mehrkant 10b auf. An einem Ende der mittels eines Stellringes 11 gegen axiales Verschieben gesicherten Antriebswelle 10 ist ein Handrad 12 auf den Mehrkant 10b aufgesteckt. Je nach Lage der Stativbohrvorrichtung kann das Handrad 12 jedoch auch abgenommen und auf der entgegengesetzten Seite auf den Mehrkant 10b aufgesteckt werden.This toothed rack 9 serves to feed the drill 4. For this purpose, a drive shaft, designated overall by 10, is rotatably mounted on the drill 4. The drive shaft 10 is provided with a pinion 10 a, which is in engagement with the rack 9. For the actuation of the drive shaft 10, this has a polygon 10b at both ends. At one end of the drive shaft 10, which is secured against axial displacement by means of an adjusting ring 11, a handwheel 12 is attached to the polygon 10b. Depending on the position of the tripod drilling device, the handwheel 12 can also be removed and placed on the polygon 10b on the opposite side.

Zur Begrenzung der Bohrtiefe ist ein Anschlag 13 vorgesehen. Dieser Anschlag 13 ist mit Hilfe eines in einer schwalbenschwanzförmigen Nute 2e, 2f geführten Gleitsteines 14 sowie eines Klemmhebels 15 in beliebiger Lage feststellbar. Der Anschlag 13 kann erforderlichenfalls auch auf dem anderen Träger 2a angeordnet werden. Da die beiden Träger 2a, 2b denselben Querschnitt aufweisen, können diese ohne weiteres aus gleichen Profilen hergestellt werden. Dies ermöglicht die Herstellung des Profils in grösseren Mengen und dadurch eine wirtschaftlichere Herstellung.A stop 13 is provided to limit the drilling depth. This stop 13 can be locked in any position with the aid of a sliding block 14 guided in a dovetail-shaped groove 2e, 2f and a clamping lever 15. If necessary, the stop 13 can also be arranged on the other support 2a. Since the two beams 2a, 2b have the same cross-section, they can easily be produced from the same profiles. This enables the profile to be produced in larger quantities and therefore more economically.

Claims (3)

1. A stand drilling device with a footplate (1), a guide column (2) which is connected to the footplate and which consists of two supports (2a, 2b) which are arranged at a lateral spacing from one another and extend parallel to one another and have the same cross-section, and a drilling tool (4) which is displaceable along the guide column (2), in which respect the guide column (2) and the drilling tool (4) arranged therebetween have guide means which correspond with one another, characterised in that the supports (2a, 2b) are substantially L-shaped in cross-section and carry application means, designed as a rack (9), for a feeding device arranged on the drilling tool as well as guide means which are designed as dovetail-shaped strips (2c, 2d), in which respect the rack (9) and the strips (2c, 2d) are arranged on mutually opposite sides of limbs, pointing towards one another, of the supports (2a, 2b).
2. A stand drilling device according to claim 1, characterised in that arranged on the end, opposite to the footplate (1), of the supports (2a, 2b) is a cover plate (3) which connects the supports to one another.
3. A stand drilling device according to claim 1 or 2, characterised in that the feeding device has a driving shaft (10) which is connected to a pinion (10a).
EP85810397A 1984-09-17 1985-09-02 Drill stand with guide bar Expired EP0175643B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85810397T ATE39635T1 (en) 1984-09-17 1985-09-02 TRIPOD DRILLING DEVICE WITH GUIDE COLUMN.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3434075 1984-09-17
DE19843434075 DE3434075A1 (en) 1984-09-17 1984-09-17 TRIPOD DRILLING DEVICE WITH GUIDE COLUMN

Publications (2)

Publication Number Publication Date
EP0175643A1 EP0175643A1 (en) 1986-03-26
EP0175643B1 true EP0175643B1 (en) 1989-01-04

Family

ID=6245585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810397A Expired EP0175643B1 (en) 1984-09-17 1985-09-02 Drill stand with guide bar

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US (1) US4684303A (en)
EP (1) EP0175643B1 (en)
JP (1) JPS6174805A (en)
AT (1) ATE39635T1 (en)
DE (2) DE3434075A1 (en)
DK (1) DK161873C (en)
FI (1) FI77597C (en)
NO (1) NO162951C (en)

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Also Published As

Publication number Publication date
FI77597B (en) 1988-12-30
DK161873C (en) 1992-02-03
DE3434075A1 (en) 1986-03-27
DE3567161D1 (en) 1989-02-09
EP0175643A1 (en) 1986-03-26
DK419985A (en) 1986-03-18
JPS6174805A (en) 1986-04-17
NO162951B (en) 1989-12-04
DK161873B (en) 1991-08-26
ATE39635T1 (en) 1989-01-15
NO853620L (en) 1986-03-18
US4684303A (en) 1987-08-04
FI77597C (en) 1989-04-10
DK419985D0 (en) 1985-09-16
NO162951C (en) 1990-03-14
FI853530A0 (en) 1985-09-16
FI853530L (en) 1986-03-18

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