EP0290537B1 - Bandsaw machine - Google Patents

Bandsaw machine Download PDF

Info

Publication number
EP0290537B1
EP0290537B1 EP87907585A EP87907585A EP0290537B1 EP 0290537 B1 EP0290537 B1 EP 0290537B1 EP 87907585 A EP87907585 A EP 87907585A EP 87907585 A EP87907585 A EP 87907585A EP 0290537 B1 EP0290537 B1 EP 0290537B1
Authority
EP
European Patent Office
Prior art keywords
band saw
turntable
workpiece
saw machine
machine according
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 - Lifetime
Application number
EP87907585A
Other languages
German (de)
French (fr)
Other versions
EP0290537A1 (en
Inventor
Johannes Falkenstein
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.)
MVZ MASCHINENBAU und VERZAHNUNGSTECHNIK JOHANNES FALKENSTEIN
Original Assignee
MVZ MASCHINENBAU und VERZAHNUNGSTECHNIK JOHANNES FALKENSTEIN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MVZ MASCHINENBAU und VERZAHNUNGSTECHNIK JOHANNES FALKENSTEIN filed Critical MVZ MASCHINENBAU und VERZAHNUNGSTECHNIK JOHANNES FALKENSTEIN
Priority to AT87907585T priority Critical patent/ATE65955T1/en
Publication of EP0290537A1 publication Critical patent/EP0290537A1/en
Application granted granted Critical
Publication of EP0290537B1 publication Critical patent/EP0290537B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
    • B28D7/04—Accessories specially adapted for use with machines or devices of the preceding groups for supporting or holding work or conveying or discharging work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/08—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws
    • B28D1/086—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws consisting of strap saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/30—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor to form contours, i.e. curved surfaces, irrespective of the method of working used

Definitions

  • the invention relates to a band saw machine according to the preamble of claim 1.
  • band saws with a diamond-coated band saw blade are used for processing natural stone materials such as Marble, granite or the like.
  • heavy workpieces such as tombstones or the like. To be able to work, this is placed on a work table, the heavy workpiece being carried by rollers for better mobility.
  • the band saw itself or the work table can perform a linear movement in the direction of the saw cut.
  • a diamond band saw for stone workpieces has become known, for example, from German utility model 8516377, in which the workpiece is placed on a double-joint cantilever arm with an additional turntable.
  • the band saw can make convex cuts by rotating the workpiece using the turntable.
  • the described device has the disadvantage that linear cuts are poor due to a lack of sufficient guidance - and concave cuts cannot be carried out at all.
  • a device for trimming the edges of stones has also become known, in which the machining head including the motor and gear is arranged horizontally displaceably on a boom.
  • the machining head is a cutting disc, a grinding head, a milling cutter or the like.
  • the machining table is designed to be movable perpendicular to this direction of movement of the machining head, an upper frame additionally resting on the worktop being provided for angular adjustment of the workpiece and for producing circular arcs.
  • a band saw machine according to the preamble of claim 1 has become known from US-A2774131.
  • This band saw machine contains a processing platform for the workpiece to be placed, which is designed as a cross table, the cross table itself being mounted on a turntable.
  • Such an arrangement involves a complicated design of the connection of the turntable with the cross table guide.
  • the turntable itself cannot be moved into a suitable position in order to carry out corresponding rotary movements with the workpiece in order to carry out curved cuts.
  • a band saw device is also known, in which the band saw itself can be moved transversely and longitudinally to the cutting direction of the band saw tool. With an additional turntable for the workpiece, curve cuts or parallel cuts can be carried out on the workpiece to a certain extent.
  • the invention has for its object to provide a band saw machine, in particular for processing natural stones, which allows maximum flexibility in use and both convex and concave curve cuts and precise linear cuts in all directions.
  • the invention is based on the main idea that the mobility of both the workpiece and the band saw must be ensured, with linear movements in all directions in the horizontal plane and rotary movements around a vertical axis of rotation must be made possible. Since a rotary movement of a workpiece on a rotary table or a rotary table only allows the production of convex cuts, an additional rotary movement of the band saw itself is provided.
  • a cross table guide is used to carry out the horizontal movements both for the workpiece and for the band saw.
  • the workpiece and the band saw are arranged on a turntable for carrying out a rotary movement, which is fastened on the cross table guide.
  • the band saw machine according to the invention has the advantage over the known devices that free movement of the workpiece in a horizontal plane is made possible, with the cross table guide making precise linear cuts possible by defining a coordinate guide. Due to the additional mobility of the band saw itself on a cross table guide, the cutting movement can be carried out either by the workpiece or by the tool or by both.
  • the processing plate is designed as a perforated plate with a geometric grid on which the workpiece can be moved very easily by means of displaceable roller balls or rollers. If only large parts have to be machined, these are usually sufficient rollers attached to the machining table for moving the workpiece.
  • the holes for these roles are made in known tables as required. However, if the workpieces are processed in a much more difficult way, this requires a much finer division of the support for the workpiece.
  • the use of a perforated plate or perforated plate is particularly advantageous, since the holes can be used to hold the roller balls or rollers at any point. Another advantage is that the water on the processing table does not splash but can drain better through the holes.
  • the combination of a perforated plate as a support table with a double articulated arm is particularly advantageous.
  • the double articulated arm can be swiveled to any position in the area of the table, on the one hand to form an additional bearing for the workpiece and on the other hand to form a pivot point for the workpiece.
  • the workpiece can also be fixed on the perforated plate alone using fixing mandrels in certain positions for the production of radii.
  • roller balls An advantageous embodiment of the roller balls is described in subclaims 9 to 11.
  • the band saw machine (10) shown in the figure consists of a conventional diamond band saw (11) with a diamond saw blade (12), as is the case with the processing of natural stones, such as tombstones or the like. is known.
  • a processing table (13) is arranged in front of the band saw (11) and can be covered in a known manner by a table top (14).
  • the table top (14) can be equipped in a known manner with rollers, not shown, on which the heavy workpiece can be placed and moved.
  • both the processing table (13) and the band saw (11) are provided with a cross table guide (15, 16).
  • the cross table guide (15) has two longitudinal guide rods (17), which are aligned in the cutting direction (X axis), and two transverse guide rods (18) for carrying out a movement perpendicular to the cutting movement (Y axis).
  • the transverse guide rods (18) are connected to the longitudinal guide rods (17) via guide sleeves (19).
  • the guide sleeves (20) which are designed as a guide table (21) and on which a processing table (22) which is rotatable about the vertical axis of rotation (Z) and is designed as a turntable, are arranged on the transverse guide rods (18).
  • the height of the turntable (22) can be adjusted continuously using a vertical rotary spindle (23).
  • the turntable (22) is only schematic in the drawing shown. Of course, it can be made much larger. If the cross table guide (15) with the turntable (22) is used, the table top (14) is removed.
  • the band saw (11) facing the longitudinal guide rod (17) is offset by a length 11 ⁇ 50 to 100 cm from the outer, the band saw (11) facing the table edge (24) so that the band saw (11) when performing the transverse movement can protrude into the table area in the Y direction.
  • the band saw (11) is mounted on the cross table guide (16), consisting of the longitudinal guide rods (25) for carrying out a movement in the cutting direction (X-axis) and transverse guide rods (26) for carrying out a movement in the transverse direction for the cutting movement (Y-axis) .
  • the transverse guide rods (26) are connected to the longitudinal guide rods so as to be displaceable in the X direction via guide sleeves (27).
  • a turntable (28) which can be rotated about the Z axis is connected to the further guide sleeves (29) which run on the transverse guide rods (26) in the Y direction.
  • the vertical rotating spindle for the turntable (28) is not shown in detail in FIG. 1. It is carried out analogously to how the turntable (22) is fastened, but height adjustment is unnecessary.
  • the turntable (28) there are two further guide rods (30) which are aligned in the basic position in the Y direction, ie transversely to the cutting direction.
  • the guide sleeves (31) run on these guide rods (30) to form the guide table (32) which carries the band saw (11).
  • the band saw (11) can therefore perform a relative movement on the turntable (28).
  • the central perpendicular or axis of rotation (34) is represented by the center (33) of the turntable (28), ie the turntable (28) rotates about the vertical axis of rotation (34).
  • the entire turntable can be moved on the guide rods (26) in the Y direction.
  • FIG. 2 shows a variant in the design of the table top (14 ') as a perforated plate or perforated plate with the holes (35).
  • the holes (35) are arranged in a grid system, which is indicated by dashed lines is.
  • the grid is designed as a square grid.
  • the holes (35) of the perforated plate (14 ') have two functions. On the one hand, they serve to hold rollers (36) or roller balls (36) (see FIG. 3). These rollers or roller balls (36) can easily be inserted and screwed into the holes (35) of the perforated plate by means of insertion pins (46), the positioning on the perforated plate being selected according to the workpiece size and workpiece machining. For example, mosaic machining of a workpiece requires the workpiece to be supported at short intervals. A very large workpiece, on the other hand, only needs to be supported at a few, widely spaced points.
  • the perforated plate has the task of draining off the liquid cooling medium that is constantly present on the table, so that it does not splash when machining workpieces.
  • the workpiece can also be positioned and fixed on the perforated plate itself. Due to the fine division of the holes, it is possible to attach a fixing mandrel through the hole or a suction cup to the workpiece at any point in order to be able to rotate it around this point.
  • the grid size of the perforated plate is e.g. a ⁇ 15 ⁇ 15 mm, the hole diameter itself is 10 mm.
  • Another hole (35 ') can be made in the middle of each grid square.
  • a double joint arm (37) with the individual arms (38 and 39) and the turntable (40) can be used.
  • the double articulated cantilever arm (37) is attached to the processing table (13) via a joint (41).
  • the height of the turntable (40) is adjustable.
  • the cantilever arm (37) can be pivoted via the articulated arms (38, 39) both in the area of the perforated plate (14 ') and in any other position inside and outside the table.
  • the turntable (40) can be used as an additional support for the workpiece. It can also optionally be arranged below the perforated plate (14 ') in order to fix the pivot point of the workpiece.
  • the turntable (40) is provided with a fixing mandrel (42) or a suction cup.
  • the position of the arms (38, 39) can be fixed in a manner known per se via locking elements (not shown).
  • perforated plate (14 ') and double-joint arm (37) enables optimal machining of large and small workpieces, both the perforated plate (14') and the turntable (40) having both a support function and a fixing function for rotating the workpiece to have a fixed point.
  • the joint (41) or bearing (41) for fastening the cantilever arm (37) can be fixed at various points on the processing table (13). This is particularly true for adapting the position of the turntable (40) to different workpiece geometries.
  • front upper spar (53) of the table frame (13) can be designed to be removable in order to make the processing table accessible even within the outer contour.
  • Fig. 3 the trackball (36) shown in Fig. 2 in the installed state is shown enlarged.
  • a larger ball (44) is mounted in a ball socket (47) with bearing balls (45) in a ball housing (43).
  • the dimensions of the pin (46) are such that it can be screwed into the holes (35) in the perforated plate (14).
  • the pin (46) is a threaded pin with e.g. an M10 thread.
  • the ball housing (43) is designed as a one-piece rotating part with the pin (46).
  • the bearing balls (45 ') mounted highest in the curved ball socket (47) protrude into an undercut (48) in the housing (43), so that the balls are secured upwards against falling out.
  • the large roller ball (44) itself is also axially secured against falling out by means of a snap ring (51) which is arranged above the central plane (49).
  • the ball housing (43) has radial incisions (51) above the central plane (49), which serve as drainage or cleaning channels, so that the spray water can flow out of it laterally.
  • a through hole (50) is also provided from the lower bottom of the ball socket (47) through the ball socket itself and through the pin (46). This hole serves to drain water penetrating into the ball socket (47).
  • a pin (55) is arranged, which in the next hole of the Perforated plate (14 ') snaps into place and secures the ball housing (43) against rotation when the union nut is tightened via the pin (46).
  • the radial incisions (52) in the housing (43) also serve to capture the snap ring (51) in order to remove it by spreading and to remove the ball (44) upwards.
  • the pin (46) is preferably fixed by means of a wing screw, not shown.
  • the through holes (35) of the perforated plate (14 ') are widened radially upwards.
  • roller balls (36) are screwed in as required to the desired locations on the perforated plate or perforated plate (14 '). The workpiece then slides on the balls (44).

Abstract

Bandsaw machine for working natural stone or other hard objects. To achieve the maximum freedom of movement, the work table (13) is provided with a cross table guide (15), and the bandsaw (11) likewise is provided with a cross table guide (16). The object to be worked can be turned on a turntable (22), to allow a convex cut. A concave cut is achieved by the bandsaw (11) making a rotational movement on the turntable (28).

Description

Die Erfindung betrifft eine Bandsägemaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a band saw machine according to the preamble of claim 1.

Zur Bearbeitung von Materialien aus Naturstein, wie z.B. Marmor, Granit o.dgl. werden Bandsägen mit einem diamantbeschichteten Bandsägeblatt verwendet. Um auch schwere Werkstücke wie Grabsteine o.dgl. bearbeiten zu können, wird dieses auf einen Arbeitstisch aufgelegt, wobei das schwere Werkstück zur besseren Beweglichkeit durch Rollen getragen wird. Zusätzlich kann die Bandsäge selbst oder auch der Arbeitstisch eine in Richtung des Sägeschnitts lineare Bewegung durchführen.For processing natural stone materials such as Marble, granite or the like band saws with a diamond-coated band saw blade are used. For heavy workpieces such as tombstones or the like. To be able to work, this is placed on a work table, the heavy workpiece being carried by rollers for better mobility. In addition, the band saw itself or the work table can perform a linear movement in the direction of the saw cut.

Um die Beweglichkeit des Werkstücks zur Durchführung von Kurvenschnitten zu erhöhen, ist beispielsweise aus dem deutschen Gebrauchsmuster 8516377 eine Diamant-Bandsäge für Werkstücke aus Stein bekannt geworden, bei welcher das Werkstück auf einem Doppelgelenk-Auslegerarm mit zusätzlicher Drehscheibe aufgelegt wird. Durch Drehung des Werkstücks mittels der Drehscheibe kann die Bandsäge konvexe Schnitte ausführen. Die beschriebene Vorrichtung hat jedoch den Nachteil, daß Linearschnitte mangels ausreichender Führung schlecht ― und Konkav-Schnitte gar nicht durchführbar sind.In order to increase the mobility of the workpiece for making curve cuts, a diamond band saw for stone workpieces has become known, for example, from German utility model 8516377, in which the workpiece is placed on a double-joint cantilever arm with an additional turntable. The band saw can make convex cuts by rotating the workpiece using the turntable. However, the described device has the disadvantage that linear cuts are poor due to a lack of sufficient guidance - and concave cuts cannot be carried out at all.

Aus der schweizer Patentschrift 603330 ist weiterhin eine Vorrichtung zum Beschneiden der Kanten von Steinen bekannt geworden, bei welcher der Bearbeitungskopf einschließlich Motor und Getriebe an einem Ausleger horizontal verschiebbar angeordnet ist. Beim Bearbeitungskopf handelt es sich dabei um eine Schneidscheibe, einen Schleifkopf, einen Fräser o.dgl. Senkrecht zu dieser Bewegungsrichtung des Bearbeitungskopfes ist der Bearbeitungstisch beweglich ausgeführt, wobei ein zusätzlich auf dem Arbeitstisch aufliegender Oberrahmen zur Winkelverstellung des Werkstücks und zur Herstellung von Kreisbögen vorgesehen ist. Mit dieser Anordnung lassen sich ebenfalls nur Konvex-Schnitte durchführen, wobei der Krümmungsradius durch die Festlegung des Drehpunkts auf den Bearbeitungstisch weitgehend vorgegeben ist. Der Einsatz einer Diamant-Bandsäge ist mit dieser Anordnung nicht vorgesehen.From the Swiss patent 603330 a device for trimming the edges of stones has also become known, in which the machining head including the motor and gear is arranged horizontally displaceably on a boom. The machining head is a cutting disc, a grinding head, a milling cutter or the like. The machining table is designed to be movable perpendicular to this direction of movement of the machining head, an upper frame additionally resting on the worktop being provided for angular adjustment of the workpiece and for producing circular arcs. With this arrangement, too, only convex cuts can be carried out, the radius of curvature being largely predetermined by the definition of the fulcrum on the processing table. The use of a diamond band saw is not intended with this arrangement.

Aus der US-A2774131 ist eine Bandsägemaschine nach der Gattung des Anspruchs 1 bekannt geworden. Diese Bandsägemaschine enthält eine Bearbeitungsplattform für das aufzulegende Werkstück, die als Kreuztisch ausgebildet ist, wobei der Kreuztisch selbst auf einem Drehteller gelagert ist. Eine solche Anordnung beinhaltet eine komplizierte Ausbildung der Verbindung des Drehtellers mit der Kreuztischführung. Insbesondere kann der Drehteller selbst nicht in eine geeignete Position gefahren werden, um mit dem Werkstück entsprechende Drehbewegungen zur Durchführung von Kurvenschnitten auszuführen.A band saw machine according to the preamble of claim 1 has become known from US-A2774131. This band saw machine contains a processing platform for the workpiece to be placed, which is designed as a cross table, the cross table itself being mounted on a turntable. Such an arrangement involves a complicated design of the connection of the turntable with the cross table guide. In particular, the turntable itself cannot be moved into a suitable position in order to carry out corresponding rotary movements with the workpiece in order to carry out curved cuts.

Aus der DE-C-47295 ist weiterhin eine Bandsägeeinrichtung bekannt geworden, bei welcher die Bandsäge selbst quer und längs zur Schnittrichtung des Bandsägewerkzeugs verschoben werden kann. Mit einem zusätzlichen Drehteller für das Werkstück können hiermit in gewissem Rahmen Kurvenschnitte oder Parallelschnitte am Werkstück durchgeführt werden.From DE-C-47295 a band saw device is also known, in which the band saw itself can be moved transversely and longitudinally to the cutting direction of the band saw tool. With an additional turntable for the workpiece, curve cuts or parallel cuts can be carried out on the workpiece to a certain extent.

Der Erfindung liegt die Aufgabe zugrunde, eine Bandsägemaschine insbesondere zur Bearbeitung von Natursteinen zu schaffen, die ein Höchstmaß an Flexibilität im Einsatz und sowohl konvexe als auch konkave Kurvenschnitte sowie präzise Linearschnitte in allen Richtungen erlaubt.The invention has for its object to provide a band saw machine, in particular for processing natural stones, which allows maximum flexibility in use and both convex and concave curve cuts and precise linear cuts in all directions.

Diese Aufgabe wird ausgehend von einer Bandsägemaschine der einleitend bezeichnenden Art erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.This object is achieved on the basis of a band saw machine of the type described in the introduction by the characterizing features of claim 1.

Vorteilhafte und zweckmäßige Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous and expedient developments of the invention are specified in the subclaims.

Der Erfindung liegt der Kerngedanke zugrunde, daß die Beweglichkeit sowohl des Werkstücks als auch der Bandsäge gewährleistet sein muß, wobei Linearbewegungen in allen Richtungen in der Horizontalebene sowie Drehbewegungen um eine vertikale Drehachse ermöglicht werden müssen. Da eine Drehbewegung eines Werkstücks auf einen Drehteller oder einen Drehtisch nur die Herstellung von Konvex-Schnitten erlaubt, ist eine zusätzliche Drehbewegung der Bandsäge selbst vorgesehen. Erfindungsgemäß wird zur Durchführung der Horizontalbewegungen je eine Kreuztischführung sowohl für das Werkstück als auch für die Bandsäge verwendet. Zusätzlich ist das Werkstück und die Bandsäge zur Durchführung einer Drehbewegung auf einem Drehteller angeordnet, der auf der Kreuztischführung befestigt ist.The invention is based on the main idea that the mobility of both the workpiece and the band saw must be ensured, with linear movements in all directions in the horizontal plane and rotary movements around a vertical axis of rotation must be made possible. Since a rotary movement of a workpiece on a rotary table or a rotary table only allows the production of convex cuts, an additional rotary movement of the band saw itself is provided. According to the invention, a cross table guide is used to carry out the horizontal movements both for the workpiece and for the band saw. In addition, the workpiece and the band saw are arranged on a turntable for carrying out a rotary movement, which is fastened on the cross table guide.

Die erfindungsgemäße Bandsägemaschine hat gegenüber den bekannten Einrichtungen den Vorteil, daß eine freie Bewegbarkeit des Werkstücks in einer Horizontalebene ermöglicht wird, wobei durch die Kreuztischführung präzise Linearschnitte durch Festlegung einer Koordinatenführung möglich ist. Durch die zusätzliche Bewegbarkeit der Bandsäge selbst auf einer Kreuztischführung kann die Schnittbewegung entweder vom Werkstück oder vom Werkzeug oder durch beide ausgeführt werden.The band saw machine according to the invention has the advantage over the known devices that free movement of the workpiece in a horizontal plane is made possible, with the cross table guide making precise linear cuts possible by defining a coordinate guide. Due to the additional mobility of the band saw itself on a cross table guide, the cutting movement can be carried out either by the workpiece or by the tool or by both.

Zusätzlich zu den Bewegungen auf den Kreuztischführungen können mittels den Drehtellern Kreisschnitte ausgeführt werden, wobei insbesondere durch den Drehteller der Bandsäge auch Konkav-Schnitte ermöglicht werden. Dabei ist erfindungsgemäß vorgesehen, daß die Bandsäge auf dem Drehteller aus dem Mittelpunkt heraus mittels einer separaten Führung verschiebbar ist, um den Schnittradius zu variieren.In addition to the movements on the cross table guides, circular cuts can be made using the turntables, whereby concave cuts are also made possible in particular by the turntable of the band saw. It is provided according to the invention that the band saw on the turntable is displaceable from the center by means of a separate guide in order to vary the cutting radius.

Gemäß dem Nebenanspruch 6 der Erfindung ist es besonders vorteilhaft, wenn die Bearbeitungsplatte als Lochplatte mit einem geometrischen Raster ausgebildet ist, auf welcher das Werkstück mittels versetzbarer Rollkugeln oder Rollen sehr leicht bewegt werden kann. Sofern nur große Teile zu bearbeiten sind, reichen die üblicherweise auf dem Bearbeitungstisch befestigten Rollen zur Bewegung des Werkstücks aus. Die Löcher für diese Rollen werden bei bekannten Tischen je nach Bedarf eingebracht. Sofern jedoch eine wesentlich diffizilere Mosaikbearbeitung der Werkstücke vorgenommen wird, erfordert dies eine wesentlich feinere Aufteilung der Unterstützung des Werkstücks. Hierfür ist die Verwendung einer Lochplatte bzw. eines Lochblechs besonders vorteilhaft, da die Löcher zur Aufnahme der Rollkugeln oder Rollen an beliebigen Stellen dienen können. Vorteilhaft ist weiterhin, daß das Wasser auf dem Bearbeitungstisch nicht spritzt sondern durch die Löcher besser abfließen kann.According to the secondary claim 6 of the invention, it is particularly advantageous if the processing plate is designed as a perforated plate with a geometric grid on which the workpiece can be moved very easily by means of displaceable roller balls or rollers. If only large parts have to be machined, these are usually sufficient rollers attached to the machining table for moving the workpiece. The holes for these roles are made in known tables as required. However, if the workpieces are processed in a much more difficult way, this requires a much finer division of the support for the workpiece. For this purpose, the use of a perforated plate or perforated plate is particularly advantageous, since the holes can be used to hold the roller balls or rollers at any point. Another advantage is that the water on the processing table does not splash but can drain better through the holes.

In weiterer Ausbildung der Erfindung ist die Kombination einer Lochplatte als Auflagetisch mit einem DoppelgelenkAuslegerarm besonders vorteilhaft. So kann der Doppelgelenkarm an jede beliebige Stelle im Bereich des Tisches geschwenkt werden um zum einen ein zusätzliches Lager für das Werkstück und zum anderen einen Drehpunkt für das Werkstück zu bilden. Das Werkstück kann auch allein auf der Lochplatte mittels Fixierdornen in bestimmten Lagen zur Herstellung von Radien fixiert werden.In a further embodiment of the invention, the combination of a perforated plate as a support table with a double articulated arm is particularly advantageous. The double articulated arm can be swiveled to any position in the area of the table, on the one hand to form an additional bearing for the workpiece and on the other hand to form a pivot point for the workpiece. The workpiece can also be fixed on the perforated plate alone using fixing mandrels in certain positions for the production of radii.

In den Unteransprüchen 9 bis 11 ist eine vorteilhafte Ausgestaltung der Rollkugeln beschrieben.An advantageous embodiment of the roller balls is described in subclaims 9 to 11.

Selbstverständlich können alle Bewegungen der Kreuztischführungen als auch die Drehbewegungen sowohl manuell oder auch mit entsprechenden Antrieben maschinell durchgeführt werden.Of course, all movements of the cross table guides as well as the rotary movements can be carried out either manually or with appropriate drives.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen

Fig. 1
eine perspektivische Darstellung der Bandsägemaschine in schematischer Darstellung,
Fig. 2
eine alternative Ausführungsform der Erfindung mit Lochplatte und Doppelgelenk-Auslegerarm und
Fig. 3
eine vergrößerte Darstellung einer Rollkugellagerung.

Embodiments of the invention are shown in the drawing and explained in more detail in the following description. Show it
Fig. 1
1 shows a perspective illustration of the band saw machine in a schematic illustration,
Fig. 2
an alternative embodiment of the invention with perforated plate and double articulated arm and
Fig. 3
an enlarged view of a roller ball bearing.

Die in der Figur dargestellte Bandsägemaschine (10) besteht aus einer herkömmlichen Diamant-Bandsäge (11) mit Diamant-Sägeblatt (12), wie sie von der Bearbeitung von Natursteinen, wie Grabsteine o.dgl. bekannt ist. Vor der Bandsäge (11) ist ein Bearbeitungstisch (13) angeordnet, der in bekannter Weise von einer Tischplatte (14) abgedeckt sein kann. Die Tischplatte (14) kann in bekannter Weise mit nicht näher dargestellten Rollen bestückt sein, auf die das schwere Werkstück auflegbar und bewegbar ist.The band saw machine (10) shown in the figure consists of a conventional diamond band saw (11) with a diamond saw blade (12), as is the case with the processing of natural stones, such as tombstones or the like. is known. A processing table (13) is arranged in front of the band saw (11) and can be covered in a known manner by a table top (14). The table top (14) can be equipped in a known manner with rollers, not shown, on which the heavy workpiece can be placed and moved.

Erfindungsgemäß wird sowohl der Bearbeitungstisch (13) als auch die Bandsäge (11) mit einer Kreuztischführung (15, 16) versehen. Die Kreuztischführung (15) besitzt hierfür zwei Längsführungsstangen (17), die in Schnittrichtung (X-Achse) ausgerichtet sind, sowie zwei Querführungsstangen (18) zur Durchführung einer zur Schnittbewegung senkrechten Bewegung (Y-Achse). Die Querführungsstangen (18) sind über Führungshülsen (19) mit den Längsführungsstangen (17) verbunden. Auf den Querführungsstangen (18) laufen die Führungshülsen (20), die als Führungstisch (21) ausgebildet sind und auf dem ein um die vertikale Drehachse (Z) drehbarer, als Drehteller ausgebildeter Bearbeitungstisch (22) angeordnet ist. Über eine vertikale Drehspindel (23) läßt sich der Drehteller (22) in der Höhe stufenlos verstellen. Der Drehteller (22) ist in der Zeichnung nur schematisch dargestellt. Er kann selbstverständlich sehr viel größer ausgeführt sein. Sofern der Einsatz der Kreuztischführung (15) mit Drehteller (22) vorgenommen wird, wird die Tischplatte (14) abgenommen.According to the invention, both the processing table (13) and the band saw (11) are provided with a cross table guide (15, 16). For this purpose, the cross table guide (15) has two longitudinal guide rods (17), which are aligned in the cutting direction (X axis), and two transverse guide rods (18) for carrying out a movement perpendicular to the cutting movement (Y axis). The transverse guide rods (18) are connected to the longitudinal guide rods (17) via guide sleeves (19). The guide sleeves (20), which are designed as a guide table (21) and on which a processing table (22) which is rotatable about the vertical axis of rotation (Z) and is designed as a turntable, are arranged on the transverse guide rods (18). The height of the turntable (22) can be adjusted continuously using a vertical rotary spindle (23). The turntable (22) is only schematic in the drawing shown. Of course, it can be made much larger. If the cross table guide (15) with the turntable (22) is used, the table top (14) is removed.

Die der Bandsäge (11) zugewandte Längsführungsstange (17) ist um eine Länge 1₁  ≈ 50 bis 100 cm von der äußeren, der Bandsäge (11) zugewandten Tischkante (24) nach innen versetzt angeordnet, damit die Bandsäge (11) bei Durchführung der Querbewegung in Y-Richtung in den Tischbereich hineinragen kann.The band saw (11) facing the longitudinal guide rod (17) is offset by a length 1₁ ≈ 50 to 100 cm from the outer, the band saw (11) facing the table edge (24) so that the band saw (11) when performing the transverse movement can protrude into the table area in the Y direction.

Die Bandsäge (11) ist auf der Kreuztischführung (16) gelagert, bestehend aus den Längsführungsstangen (25) zur Durchführung einer Bewegung in Schnittrichtung (X-Achse) und Querführungsstangen (26) zur Durchführung einer Bewegung in Querrichtung zur Schnittbewegung (Y-Achse). Die Querführungsstangen (26) sind über Führungshülsen (27) mit den Längsführungsstangen in X-Richtung verschiebbar verbunden. Ein um die Z-Achse drehbarer Drehteller (28) ist mit den weiteren Führungshülsen (29) verbunden, die auf den Querführungsstangen (26) in Y-Richtung laufen. Die vertikale Drehspindel für den Drehteller (28) ist in der Fig. 1 nicht näher dargestellt. Sie wird sinngemäß ausgeführt, wie die Befestigung des Drehtellers (22), wobei sich jedoch eine Höhenverstellung erübrigt.The band saw (11) is mounted on the cross table guide (16), consisting of the longitudinal guide rods (25) for carrying out a movement in the cutting direction (X-axis) and transverse guide rods (26) for carrying out a movement in the transverse direction for the cutting movement (Y-axis) . The transverse guide rods (26) are connected to the longitudinal guide rods so as to be displaceable in the X direction via guide sleeves (27). A turntable (28) which can be rotated about the Z axis is connected to the further guide sleeves (29) which run on the transverse guide rods (26) in the Y direction. The vertical rotating spindle for the turntable (28) is not shown in detail in FIG. 1. It is carried out analogously to how the turntable (22) is fastened, but height adjustment is unnecessary.

Auf dem Drehteller (28) befinden sich zwei weitere Führungsstangen (30) die in Grundstellung in Y-Richtung, d.h. quer zur Schnittrichtung ausgerichtet sind. Auf diesen Führungsstangen (30) laufen die Führungshülsen (31) zur Bildung des Führungstisches (32), der die Bandsäge (11) trägt. Die Bandsäge (11) kann demnach eine Relativbewegung auf dem Drehteller (28) ausführen. In der Fig. 1 ist die Mittelsenkrechte bzw. Drehachse (34) durch den Mittelpunkt (33) der Drehscheibe (28) dargestellt, d.h. der Drehteller (28) dreht sich um die vertikale Drehachse (34). Durch Verschiebung der Bandsäge (11) auf den Führungsstangen (30) in (+ Y)- oder (- Y)-Richtung kann der Abstand (1₂) zwischen Drehachse (34) und Sägeblatt (12) verkleinert oder vergrößert werden. Verschiebt man die Bandsäge (11) auf den Führungsstangen (30) beispielweise in der Fig. 1 nach links (weg vom Bearbeitungstisch (13) (- Y)-Richtung), so wird der Abstand (1₂) zwischen Drehachse (34) und Sägeblatt (12) verkleinert, wodurch sich ein Konkavschnitt mit kleinerem Krümmungsradius ergibt. Es ergibt sich umgekehrt ein Konkav-Schnitt mit größerem Krümmungsradius bei Verschiebung der Bandsäge (11) in der Fig. 1 nach rechts (in Richtung des Bearbeitungstisches, (+ Y)-Richtung), da hierdurch der Abstand (1₂) zwischen Drehachse (34) und Sägeblatt (12) vergrößert wird.On the turntable (28) there are two further guide rods (30) which are aligned in the basic position in the Y direction, ie transversely to the cutting direction. The guide sleeves (31) run on these guide rods (30) to form the guide table (32) which carries the band saw (11). The band saw (11) can therefore perform a relative movement on the turntable (28). 1, the central perpendicular or axis of rotation (34) is represented by the center (33) of the turntable (28), ie the turntable (28) rotates about the vertical axis of rotation (34). By moving the band saw (11) on the guide rods (30) in (+ Y) - or (- Y) direction, the distance (1₂) between the axis of rotation (34) and saw blade (12) can be reduced or increased. Moving the band saw (11) on the guide rods (30) for example in Fig. 1 to the left (away from the processing table (13) (- Y) direction), the distance (1₂) between the axis of rotation (34) and the saw blade (12) reduced, resulting in a concave section with a smaller radius of curvature. Conversely, there is a concave cut with a larger radius of curvature when the band saw (11) is moved in FIG. 1 to the right (in the direction of the machining table, (+ Y) direction), since this causes the distance (1₂) between the axis of rotation (34 ) and saw blade (12) is enlarged.

Zusätzlich zu dieser Bewegung kann der gesamte Drehteller auf den Führungsstangen (26) in Y-Richtung bewegt werden.In addition to this movement, the entire turntable can be moved on the guide rods (26) in the Y direction.

Die Drehbewegung der Bandsäge (11) um den Drehteller (28) ergibt einen Konkavschnitt beim auf den Drehteller (22) aufgelegten Werkstück. Eine Drehbewegung des Drehtellers (22) ergibt einen Konvexschnitt am auf diesen aufgelegten Werkstück. Im übrigen können mittels den Kreuztischführungen (15, 16) präzise Linearschnitte in X-Richtung sowie Y-Richtung hergestellt werden.The rotary movement of the band saw (11) around the turntable (28) results in a concave cut on the workpiece placed on the turntable (22). A rotary movement of the turntable (22) results in a convex cut on the workpiece placed on it. In addition, precise linear cuts in the X direction and Y direction can be produced using the cross table guides (15, 16).

Sämtliche Bewegungen der Kreuztischführungen (15, 16) sowie der Drehteller sind arretierbar.All movements of the cross table guides (15, 16) and the turntable can be locked.

Das in der Fig. 2 dargestellte Ausführungsbeispiel zeigt eine Variante in der Ausbildung der Tischplatte (14′) als Lochplatte oder Lochblech mit den eingebrachten Löchern (35). Die Löcher (35) sind in einem Rastersystem angeordnet, welches durch gestrichelte Linien angedeutet ist. Im Ausführungsbeispiel nach Fig. 2 ist das Raster als quadratisches Raster ausgebildet.The embodiment shown in Fig. 2 shows a variant in the design of the table top (14 ') as a perforated plate or perforated plate with the holes (35). The holes (35) are arranged in a grid system, which is indicated by dashed lines is. In the exemplary embodiment according to FIG. 2, the grid is designed as a square grid.

Die Löcher (35) der Lochplatte (14′) haben zwei Funktionen. Zum einen dienen sie zur Aufnahme von Rollen (36) bzw. Rollkugeln (36) (s. Fig. 3). Diese Rollen oder Rollkugeln (36) können mittels Einsteckzapfen (46) leicht in die Löcher (35) der Lochplatte eingesetzt und verschraubt werden, wobei die Positionierung auf der Lochplatte entsprechend der Werkstückgröße und Werkstückbearbeitung gewählt wird. Beispielsweise erfordert eine Mosaikbearbeitung eines Werkstücks eine Abstützung des Werkstücks in kurzen Abständen. Ein sehr großflächiges Werkstück braucht dagegen nur an wenigen, weit auseinanderliegenden Punkten abgestützt zu werden.The holes (35) of the perforated plate (14 ') have two functions. On the one hand, they serve to hold rollers (36) or roller balls (36) (see FIG. 3). These rollers or roller balls (36) can easily be inserted and screwed into the holes (35) of the perforated plate by means of insertion pins (46), the positioning on the perforated plate being selected according to the workpiece size and workpiece machining. For example, mosaic machining of a workpiece requires the workpiece to be supported at short intervals. A very large workpiece, on the other hand, only needs to be supported at a few, widely spaced points.

Zum anderen hat die Lochplatte die Aufgabe, das auf dem Tisch ständig anfallende flüssige Kühlmedium abzuleiten, so daß es bei der Bearbeitung von Werkstücken nicht spritzt.On the other hand, the perforated plate has the task of draining off the liquid cooling medium that is constantly present on the table, so that it does not splash when machining workpieces.

Das Werkstück kann auch auf der Lochplatte selbst positioniert und fixiert werden. Hierfür ist es durch die feine Aufteilung der Löcher möglich, an jeder beliebigen Stelle einen Fixierdorn durch das Loch oder eine Saugglocke an das Werkstück anzubringen, um es um diesen Punkt drehen zu können.The workpiece can also be positioned and fixed on the perforated plate itself. Due to the fine division of the holes, it is possible to attach a fixing mandrel through the hole or a suction cup to the workpiece at any point in order to be able to rotate it around this point.

Das Rastermaß der Lochplatte beträgt z.B. a ≈ 15 × 15 mm, der Lochdurchmesser selbst beträgt 10 mm. In der Mitte jedes Rastervierecks kann noch eine weitere Bohrung (35′) angebracht sein.The grid size of the perforated plate is e.g. a ≈ 15 × 15 mm, the hole diameter itself is 10 mm. Another hole (35 ') can be made in the middle of each grid square.

Um eine noch bessere Positionierung zwischen dem Werkstück und dem Werkzeug zu erhalten, kann neben der guten Beweglichkeit des Werkstücks auf der Lochplatte (14′) ein Doppelgelenk-Auslegerarm (37) mit den einzelnen Armen (38 und 39) sowie dem Drehteller (40) verwendet werden. Der Doppelgelenk-Auslegerarm (37) ist am Bearbeitungstisch (13) über ein Gelenk (41) befestigt. Der Drehteller (40) ist in seiner Höhe verstellbar.In order to achieve an even better positioning between the workpiece and the tool, besides the good mobility of the workpiece on the perforated plate (14 ') a double joint arm (37) with the individual arms (38 and 39) and the turntable (40) can be used. The double articulated cantilever arm (37) is attached to the processing table (13) via a joint (41). The height of the turntable (40) is adjustable.

Der Auslegerarm (37) kann über die Gelenkarme (38, 39) sowohl im Bereich der abgenommenen Lochplatte (14′) als auch in jede andere Position innerhalb und außerhalb des Tisches geschwenkt werden. Dabei kann der Drehteller (40) als zusätzliche Auflage für das Werkstück verwendet werden. Er kann auch ggf. unterhalb der Lochplatte (14′) angeordnet sein, um den Drehpunkt des Werkstücks zu fixieren. Der Drehteller (40) ist mit einem Fixierdorn (42) oder einer Saugglocke versehen.The cantilever arm (37) can be pivoted via the articulated arms (38, 39) both in the area of the perforated plate (14 ') and in any other position inside and outside the table. The turntable (40) can be used as an additional support for the workpiece. It can also optionally be arranged below the perforated plate (14 ') in order to fix the pivot point of the workpiece. The turntable (40) is provided with a fixing mandrel (42) or a suction cup.

Die Arme (38, 39) sind in ihrer Lage über nicht näher dargestellte Feststellelemente in an sich bekannter Weise fixierbar.The position of the arms (38, 39) can be fixed in a manner known per se via locking elements (not shown).

Die erfindungsgemäße Kombination von Lochplatte (14′) und Doppelgelenk-Auslegerarm (37) ermöglicht eine optimale Bearbeitung von großen und kleinen Werkstücken, wobei sowohl die Lochplatte (14′) als auch der Drehteller (40) sowohl Auflagefunktion als auch Fixierfunktion zur Drehung des Werkstücks um einen festen Punkt haben.The combination of perforated plate (14 ') and double-joint arm (37) according to the invention enables optimal machining of large and small workpieces, both the perforated plate (14') and the turntable (40) having both a support function and a fixing function for rotating the workpiece to have a fixed point.

Das Gelenk (41) bzw. Lager (41) zur Befestigung des Auslegerarms (37) kann an verschiedene Stellen des Bearbeitungstisches (13) fixiert werden. Dies insbesondere zur Anpassung der Lage des Drehtellers (40) an verschiedene Werkstückgeometrien.The joint (41) or bearing (41) for fastening the cantilever arm (37) can be fixed at various points on the processing table (13). This is particularly true for adapting the position of the turntable (40) to different workpiece geometries.

Weiterhin kann der vordere obere Holm (53) des Tischgestells (13) abnehmbar ausgebildet sein, um den Bearbeitungstisch auch innerhalb der Außenkontur begehbar zu machen.Furthermore, the front upper spar (53) of the table frame (13) can be designed to be removable in order to make the processing table accessible even within the outer contour.

Die Ausbildung der Bandsägemaschine in Fig. 2 als linear verschiebbare Maschine kann selbstverständlich derjenigen nach Fig. 1 angepaßt werden. Im übrigen gelten alle zu Fig. 1 beschriebenen Maßnahmen auch zum Ausführungsbeispiel nach Fig. 2.The formation of the band saw machine in FIG. 2 as a linearly displaceable machine can of course be adapted to that of FIG. 1. Otherwise, all of the measures described in relation to FIG. 1 also apply to the exemplary embodiment in accordance with FIG. 2.

In Fig. 3 ist die in Fig. 2 in eingebautem Zustand dargestellte Rollkugel (36) vergrößert dargestellt. Hierzu ist in einem Kugelgehäuse (43) eine größere Kugel (44) in einer Kugelpfanne (47) mit Lagerkugeln (45) gelagert. Der Zapfen (46) ist in seinen Abmaßen derart bemessen, daß er in die Löcher (35) des Lochblechs (14) eingeschraubt werden kann. Hierzu ist der Zapfen (46) als Gewindezapfen mit z.B. einem M10-Gewinde ausgebildet.In Fig. 3 the trackball (36) shown in Fig. 2 in the installed state is shown enlarged. For this purpose, a larger ball (44) is mounted in a ball socket (47) with bearing balls (45) in a ball housing (43). The dimensions of the pin (46) are such that it can be screwed into the holes (35) in the perforated plate (14). For this purpose, the pin (46) is a threaded pin with e.g. an M10 thread.

Das Kugelgehäuse (43) ist als einstückiges Drehteil mit dem Zapfen (46) ausgebildet. Die in der gewölbten Kugelpfanne (47) am höchsten gelagerten Lagerkugeln (45') ragen in eine Hinterschneidung (48) im Gehäuse (43) hinein, so daß die Kugeln nach oben hin gegen Herausfallen gesichert sind. Die große Rollkugel (44) selbst ist mittels eines Sprengrings (51) der oberhalb der Mittelebene (49) angeordnet ist, ebenfalls axial gegen Herausfallen gesichert. Das Kugelgehäuse (43) weist oberhalb der Mittelebene (49) radiale Einschnitte (51) auf, die als Entwässerungs- oder Reinigungskanäle dienen, so daß das Spritzwasser hieraus seitlich abfließen kann. Weiterhin ist eine Durchgangsbohrung (50) vom unteren Boden der Kugelpfanne (47) durch die Kugelpfanne selbst und durch den Zapfen (46) vorgesehen. Diese Bohrung dient zur Entwässerung von in die Kugelpfanne (47) eindringendem Wasser.The ball housing (43) is designed as a one-piece rotating part with the pin (46). The bearing balls (45 ') mounted highest in the curved ball socket (47) protrude into an undercut (48) in the housing (43), so that the balls are secured upwards against falling out. The large roller ball (44) itself is also axially secured against falling out by means of a snap ring (51) which is arranged above the central plane (49). The ball housing (43) has radial incisions (51) above the central plane (49), which serve as drainage or cleaning channels, so that the spray water can flow out of it laterally. A through hole (50) is also provided from the lower bottom of the ball socket (47) through the ball socket itself and through the pin (46). This hole serves to drain water penetrating into the ball socket (47).

Am unteren Boden des Kugelgehäuses (43) ist in einem Abstand b von der Mittelachse (54) ein Stift (55) angeordnet, der in die jeweils nächste Bohrung der Lochplatte (14′) einrastet und das Kugelgehäuse (43) gegen Verdrehung beim Anziehen der Überwurfmutter über den Zapfen (46) sichert.At the bottom of the ball housing (43) at a distance b from the central axis (54) a pin (55) is arranged, which in the next hole of the Perforated plate (14 ') snaps into place and secures the ball housing (43) against rotation when the union nut is tightened via the pin (46).

Die radialen Einschnitte (52) im Gehäuse (43) dienen gleichzeitig zur Erfassung des Sprengrings (51) um diesen durch Spreizung abzunehmen und die Kugel (44) nach oben hin herauszunehmen.The radial incisions (52) in the housing (43) also serve to capture the snap ring (51) in order to remove it by spreading and to remove the ball (44) upwards.

Der Zapfen (46) wird vorzugsweise mittels einer nicht näher dargestellten Flügelschraube fixiert.The pin (46) is preferably fixed by means of a wing screw, not shown.

Die Durchgangslöcher (35) der Lochplatte (14′) sind nach oben hin radienförmig aufgeweitet.The through holes (35) of the perforated plate (14 ') are widened radially upwards.

Die Rollkugeln (36) werden je nach Bedarf an die gewünschten Stellen des Lochbleches bzw. der Lochplatte (14′) eingeschraubt. Das Werkstück gleitet dann auf den Kugeln (44).The roller balls (36) are screwed in as required to the desired locations on the perforated plate or perforated plate (14 '). The workpiece then slides on the balls (44).

Claims (10)

1. Band saw machine, especially for the working of natural stone blocks or other heavy articles, having a working bench (13) which comprises a machining platform (22) rotatable about a vertical axis (Z-axis) and with a band saw (11) which is displaceably mounted on a horizontal cross table guide (16), for the execution of a longitudinal movement (X-axis) in the cutting direction of the sawing tool (11) and of a transverse movement (Y-axis) in a direction perpendicular thereto, characterised in that the machining platform (22) is mobile on a further cross table guide (15) in the horizontal plane (X-, Y-plane), in that the band saw (11) in turn is mounted on a turntable (28) and is displaceable on this in the direction towards the working bench (Y-axis), for the variation of the distance 1₂ between rotation axis (34) of the turntable (28) and sawing tool (12) and in that the turntable (28) for its part is mounted displaceably on the cross table guide (16).
2. Band saw machine according to Claim 1, characterised in that the machining platform (22) is formed as vertically adjustable (Z-direction) turntable (22).
3. Band saw machine according to Claim 2, characterised in that the turntable (22) can be removed and replaced by a table panel for the reception of a workpiece.
4. Band saw machine according to one or more of the preceding Claims, characterised in that the movement of the cross table guides (15, 16) and/or the turntable (22, 28) and/or the rotation spindle (23) for the turntable can be executed manually or automatically.
5. Band saw machine especially according to one or more of the preceding Claims 1 to 4, with band saw and machining table capable of linear displacement in relation to one another and with a rotation device for the rotatable mounting of the workpiece, characterised in that the machining table (13) is provided with a removable perforated panel (14′) of which the perforations (35) form a geometric pattern, preferably a square pattern, and in that the perforations (35) are formed to receive roller balls (36) or rollers (36) for the workpiece movement.
6. Band saw machine according to one or more of the preceding Claims 3 to 5, characterised in that in addition to the perforated panel support (14′) a double-jointed overhang arm (37) is provided which is adjustable, vertically displaceable and fixable on the machining table (13), complementarily and/or alternatively to the perforated panel (14′), for the mounting and/or fixing of the workpiece.
7. Band saw machine according to Claim 6, characterised in that the workpiece is fixable, securable and/or rotatable on the turntable (40) and/or the perforated panel (14′) by means of a peg (42) or a suction bell.
8. Band saw machine according to Claim 5, characterised in that the roller balls (36) consist of a preferably one-piece ball housing (43) with threaded journal (46), where the housing (43) is made as ball socket (47) for the reception of bearing balls (45), on which the ball (44) rolls, and in that the bearing balls (45') mounted highest in the ball socket (47) are axially secured in an undercut portion (48) in the housing (43).
9. Band saw machine according to Claim 8, characterised in that the ball (44) is axially secured in the upper housing part (43) by a circlip (51).
10. Band saw machine according to Claim 8, characterised in that the ball housing (43) comprises, above the middle plane (49) of the balls (44), radial incisions (52) as drainage and cleaning passages and in that preferably the ball socket (47) comprises a through-passing bore (50) through the journal (46).
EP87907585A 1986-11-29 1987-11-25 Bandsaw machine Expired - Lifetime EP0290537B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87907585T ATE65955T1 (en) 1986-11-29 1987-11-25 BAND SAWING MACHINE.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3640842 1986-11-29
DE3640842 1986-11-29
DE3710515 1987-03-30
DE19873710515 DE3710515A1 (en) 1986-11-29 1987-03-30 BAND SAWING MACHINE

Publications (2)

Publication Number Publication Date
EP0290537A1 EP0290537A1 (en) 1988-11-17
EP0290537B1 true EP0290537B1 (en) 1991-08-07

Family

ID=25849851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87907585A Expired - Lifetime EP0290537B1 (en) 1986-11-29 1987-11-25 Bandsaw machine

Country Status (4)

Country Link
EP (1) EP0290537B1 (en)
AT (1) ATE65955T1 (en)
DE (2) DE3710515A1 (en)
WO (1) WO1988003860A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4005143A1 (en) * 1990-02-17 1991-08-22 Keuro Maschinenbau Gmbh Vertical bandsaw with adjustment for mitre cuts - has work clamped in fixed bridge-piece with bandsaw unit adjustable around vertical axis
DE4126926C1 (en) * 1990-02-17 1993-02-11 Keuro Maschinenbau Gmbh & Co Kg, 7590 Achern, De Bandsaw cutting through metal rods - has idler wheel unit adjustable in angle to cut slanted faces with good finish
DE4027156A1 (en) * 1990-08-28 1992-03-12 Lange Frank Dipl Kaufm Adjustable support for hack-saw - enables hack-saw to be moved horizontally or vertically or rotated about vertical axis
DE4117687A1 (en) * 1991-05-29 1992-12-03 Falkenstein J Masch Verzahnung BAND SAWING MACHINE
DE4143233C2 (en) * 1991-12-31 1995-09-14 Bernhard Antonius Heming Device for producing bevels on aerated concrete blocks
DE4406034C2 (en) * 1994-02-24 1996-05-30 Wolfgang Mayer Contour wire saw
DE19942969B4 (en) * 1998-12-23 2004-04-22 Lutz Tiedemann Device for producing aerated concrete shells
DE10141404A1 (en) * 2001-08-23 2003-03-13 Keuro Besitz Gmbh & Co band saw
CN104290201B (en) * 2014-08-19 2015-12-30 元亮科技有限公司 For the band saw cutting device of superhard material processing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE47295C (en) * KALKER WERKZEUGMASCHINEN-FABRIK L. W. Breuer, Schumacher & Co. in Kalk bei Köln a. Rh Bandsaw with a swinging frame
US2774131A (en) * 1955-01-31 1956-12-18 Continental Machines Metal cutting band saw with manually controllable power driven work feed
US3190159A (en) * 1964-04-13 1965-06-22 Continental Machines Contour sawing machine
DE2912934C2 (en) * 1979-03-31 1984-03-01 Manfred H. 4000 Düsseldorf Humann Device for cutting, in particular, larger shaped pieces from a block of material
DE3334379A1 (en) * 1983-09-23 1985-04-11 Jochen 3014 Laatzen Bickmeyer Band saw for stone working
DE3506783A1 (en) * 1985-02-26 1986-08-28 Georg Ott Werkzeug- und Maschinenfabrik, 7900 Ulm Feed carriage for a circular saw
DE3607454A1 (en) * 1985-04-10 1986-10-16 Schelling & Co., Schwarzach, Vorarlberg Dividing-up installation for plate-like workpieces
DE8516377U1 (en) * 1985-06-05 1985-08-08 W. Goldschmidt GmbH & Co KG, 7252 Weil der Stadt Diamond band saw for workpieces made of stone

Also Published As

Publication number Publication date
ATE65955T1 (en) 1991-08-15
DE3772045D1 (en) 1991-09-12
WO1988003860A1 (en) 1988-06-02
DE3710515A1 (en) 1988-06-01
EP0290537A1 (en) 1988-11-17

Similar Documents

Publication Publication Date Title
EP2247405B1 (en) Clamping device for a computer-controlled machining center
DE3729162C2 (en)
EP0659520B1 (en) Machine-tool
DE4242906A1 (en) Numerically-controlled grinder for metal work
DE202006021076U1 (en) Machine for processing optical workpieces, in particular plastic spectacle lenses
EP0445404B1 (en) Device for making drilled holes with undercutting
DE102005037665B3 (en) Method for processing non-round and also rotationally symmetrical inner and outer contours of a rotating workpiece comprises producing an adjusting movement between a workpiece and a tool and comparing contour deviations
EP0290537B1 (en) Bandsaw machine
CH669924A5 (en)
DE102019106974A1 (en) Machine tool for machining a workpiece
EP1392464B1 (en) Grinding machine for double-sided grinding of saw tooth edges
DE3136372A1 (en) Planer-type grinding machine
DE2753386A1 (en) MACHINE TOOL
EP1025953B1 (en) Machine tool
EP1832383B1 (en) Machine tool
DE2044429B2 (en) ADDITIONAL EQUIPMENT FOR THE MACHINING OF THE INSIDE OF BALLS ON A VERTICAL LATHE
EP0117305B1 (en) Work bench
EP1319487A2 (en) Electric cutting tool, in particular for dry or wet curve cutting of tiles, natural or artificial stone, concrete slabs etc
EP0516071A2 (en) Sawing machine
DE1137974B (en) Device for grinding the open space on tools such as cutters, reamers or the like.
EP1412149A1 (en) Machine for cutting wafers
DE2927976A1 (en) Machine for finish-machining tool flanks of gear - in which workpiece rotates and tool above workpiece performs necessary translatory movement
DE4413483A1 (en) Fixture for tool grinding machine
DE202006005904U1 (en) Machine tool for grinding broaching tools
DE3611103A1 (en) Grinding machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19880824

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19900222

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 65955

Country of ref document: AT

Date of ref document: 19910815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3772045

Country of ref document: DE

Date of ref document: 19910912

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19911010

Year of fee payment: 5

ITF It: translation for a ep patent filed

Owner name: UFFICIO TECNICO ING. A. MANNUCCI

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19911114

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19911130

Year of fee payment: 5

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
EPTA Lu: last paid annual fee
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19921030

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19921103

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19921118

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19921125

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19921125

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19921126

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19921204

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19930129

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19930601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19931125

Ref country code: AT

Effective date: 19931125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19931130

Ref country code: CH

Effective date: 19931130

Ref country code: BE

Effective date: 19931130

BERE Be: lapsed

Owner name: MVZ MASCHINENBAU UND VERZAHNUNGSTECHNIK JOHANNES

Effective date: 19931130

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19931125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940729

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940802

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 87907585.1

Effective date: 19930610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051125