EP4015147A1 - Machine for working sheet metal parts - Google Patents

Machine for working sheet metal parts Download PDF

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Publication number
EP4015147A1
EP4015147A1 EP21209018.7A EP21209018A EP4015147A1 EP 4015147 A1 EP4015147 A1 EP 4015147A1 EP 21209018 A EP21209018 A EP 21209018A EP 4015147 A1 EP4015147 A1 EP 4015147A1
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EP
European Patent Office
Prior art keywords
grinding
unit
machine
belt
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.)
Pending
Application number
EP21209018.7A
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German (de)
French (fr)
Inventor
Jacques Burtscher
Christian Armbruster
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Arku Maschinenbau GmbH
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Arku Maschinenbau GmbH
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Publication date
Application filed by Arku Maschinenbau GmbH filed Critical Arku Maschinenbau GmbH
Publication of EP4015147A1 publication Critical patent/EP4015147A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/002—Machines or devices using grinding or polishing belts; Accessories therefor for grinding edges or bevels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/008—Machines comprising two or more tools or having several working posts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/02—Frames; Beds; Carriages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/06—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving conveyor belts, a sequence of travelling work-tables or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/04—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of metal, e.g. skate blades

Definitions

  • the present invention relates to a machine for processing sheet metal parts in several consecutive processing steps, in particular deburring, rounding of edges and grinding the surface.
  • EP 3 085 491 A1 describes a machine for grinding and deburring a flat tool piece with a horizontal grinding roller. Such a machine can grind the surface, but cannot round edges or remove larger burrs.
  • EP 2 792 450 describes a deburring machine with horizontally revolving belts that carry a large number of brushes arranged next to one another.
  • the brushes consist of a fan-shaped pack of abrasive paper or abrasive fleece.
  • the sheet metal part to be deburred is crosswise to the direction of movement of the brushes advanced.
  • the edges of the abrasive paper or abrasive fleece rub across the surface of the workpiece transversely to the feed direction and thereby remove the protruding burrs. Due to the flexibility of the brushes, they can penetrate a certain distance into recesses.
  • EP 1 293 292 A1 describes a machine for processing workpieces with a round sanding pad that rotates about a vertical axis.
  • the underside of the sanding disc has radial brushes that sweep over the workpieces.
  • DE 10 2018 126 281 A1 describes a grinding device for processing a metal workpiece in a continuous process, comprising a wide-belt grinding unit and a further grinding unit with disk grinders for producing a finish on a surface of the workpiece.
  • a transport device transports the workpiece linearly under the wide belt sanding unit and under the other sanding unit.
  • Grinding and deburring machines must be set precisely to the thickness of the sheet metal parts to be processed, so that on the one hand the processing tools act on the workpiece with sufficient pressure, but on the other hand the processing tools are not damaged or the workpiece does not get caught on a tool or jammed.
  • the setting of a brush unit with grinding brushes is a little less critical because the grinding brushes are flexible and can give way to the workpiece to a certain extent.
  • the distance between the conveyor belt and the contact roller or the infeeds must be set very precisely so that on the one hand the workpiece can still move under the rotating contact roller and on the other hand the grinding belt can be pushed over the contact roller with sufficient pressure surface of the workpiece grinds.
  • the object of the invention is the conception of a machine for processing sheet metal parts with a conveyor belt for transporting the workpiece to be processed in the horizontal direction from a loading table to an output table and a plurality of processing units which are arranged one behind the other along the conveyor belt and a brush unit with grinding brushes and at least includes a sanding belt unit that can be quickly and optimally adjusted to different thicknesses of the sheet metal parts to be processed.
  • a brush unit with grinding brushes and at least one grinding belt unit with a contact roller arranged transversely to the direction of passage are arranged one behind the other in the direction of passage of the workpiece along the conveyor belt.
  • the sanding belt unit is mounted in an auxiliary frame, which is mounted in the machine frame so that it can be moved in the vertical direction, and an adjusting device is arranged between the machine frame and the auxiliary frame, with which the distance between the conveyor belt and the contact roller of the sanding belt unit can be adjusted independently of the brush unit with sanding brushes and optionally further processing stations can be set.
  • the arrangement of the entire sanding belt unit on a vertically movable auxiliary frame enables quick, easy and very precise Adjustment of the distance between the conveyor belt and the contact roller, i.e. the infeed.
  • the throughput height of the workpiece which is determined by the vertical height of the conveyor belt in the machine frame, is the reference height that applies to all processing units. This has the advantage that first the vertical height of the conveyor belt can be set, for example for the purpose of adjustment to upstream or downstream work stations in the context of a chain of machines, and then the working gaps of the various processing units can be adjusted separately from one another.
  • the machine according to the invention can, in particular, finish stamped or cut sheet metal parts with a thickness of up to several centimeters with excellent results, by both deburring and/or rounding the edges and edges and sanding the surface.
  • the surface is expediently sanded by the sanding belt unit after the edges have been deburred or rounded by the brush unit.
  • three processing units are arranged one behind the other along the conveyor belt, namely in the first place a first sanding belt unit in a first subframe, in the second place a central brush unit with sanding brushes and in the third place a second sanding belt unit in a second subframe behind the central brush unit .
  • the first grinding belt unit can advantageously have a coarse-grain grinding belt for deburring and the second grinding belt unit can have a fine-grain grinding belt for grinding the surface of the workpiece.
  • the central brush unit in the middle is then primarily used to round off edges the recesses in the surface of the sheet metal part.
  • a sanding belt unit with a contact roller can at most deburr the front edge of a sheet metal part, whereas the flexible sanding brushes of the brush unit penetrate a little into recesses in the sheet metal part.
  • the machine is used for processing relatively thick sheet metal parts 10 in three consecutive processing steps, namely deburring, rounding the edges and grinding the surface.
  • a machine frame 20 essentially comprises front and rear vertical bars 21a, 21b and horizontal bars 22 placed between them.
  • Four parallel vertical guides 23a, 23b are arranged in the region of the lower horizontal bars 22b.
  • a conveyor belt 30 is mounted in the machine frame 20 at a distance from the floor.
  • the conveyor belt 30 comprises a working strand 31 and a slack strand 32 and runs between a deflection roller 33a and a drive roller 33b, which extend transversely to the direction of transport.
  • the conveyor belt 30 protrudes beyond the machine frame 20 at the inlet and outlet of the machine.
  • the sections of the conveyor belt 30 that protrude beyond the machine frame 20 form a loading surface 34 and an unloading surface 35.
  • the sheet metal part 10 to be processed is moved in the direction of the arrow from the loading surface 34 to the unloading surface 35 continuously transported to successively pass through three different processing units.
  • the first processing unit is a first grinding belt unit 40 with a coarse-grain grinding belt 41 which is endless and runs between a contact roller 42 and a deflection roller 43 .
  • the contact roller 42 has a pulley 44 which is driven by an electric motor 45 via a drive belt 46.
  • the deflection roller 43 is rotatably mounted on a bearing fork 47 .
  • the first grinding belt unit 40 is installed completely in a first auxiliary frame 50 .
  • the auxiliary frame 50 comprises two parallel vertical rails 51a, 51b arranged at a distance from one another and a cross member 52 connecting them (cf. 2 ).
  • the auxiliary frame 50 has a cross-section which, in principle, corresponds to an inverted U, with the vertical rails 51a, 51b forming the U-legs and the crossbeam 52 forming the U-back.
  • the vertical rails 51a, 51b run laterally in an intermediate space between the machine frame 20 and the conveyor belt 30.
  • the vertical rails 51a, 51b in turn have a cross section in the shape of a flat, large U, with the ridges of the U pointing towards one another.
  • the pulley 44 and the drive belt 46 are arranged within the U-shaped cross section of the vertical rail 51a, the electric motor 45 is located on the outside to save space (cf. 2 ).
  • the vertical rails 51a, 51b of the first auxiliary frame 50 are slidably mounted in the vertical guides 23a, 23b of the machine frame 20.
  • a clamping cylinder 53 is located between the bearing fork 47 of the sanding belt unit 40 and the crossbeam 52 of the auxiliary frame 50.
  • a clamping device 48 with a manually operated clamping lever enables the crossbeam 52 to be clamped on the auxiliary frame 50.
  • the clamping device 48 is released in order to change the sanding belt 41.
  • the tension between Contact roller 42 and deflection roller 43 released by the clamping cylinder 53 The abrasive belt 41 can then be parallel to the contact roller 42 (in 2 to the left) can be pulled out.
  • the auxiliary frame 50 of the first grinding belt unit 40 includes an adjustment device, which is configured here as a lifting spindle gear 60, for example. This allows the distance between the conveyor belt 30 and the contact roller 42 of the grinding belt unit 40 or the infeed to be adjusted very precisely and, if necessary, to be adjusted quickly, with the auxiliary frame 50 being moved vertically up or down on the vertical guides 23a, 23b.
  • the second processing unit is a brush unit 70 which is arranged behind the first sanding belt unit 40 in the direction of passage of the sheet metal part 10 .
  • the brush unit 70 has a total of eight grinding brushes 71, four of which rotate in the following direction and four in the opposite direction about horizontal axes. In 1 only the front row with four grinding brushes 71 can be seen.
  • An electric drive unit 72 drives the grinding brushes 71 via a transfer case 73 . While the drive unit 72 is fixed in the machine frame 20, the transfer case 73 is rotatable about its vertical axis. This results in a multi-rotational movement of the grinding brushes 71.
  • the grinding brushes 71 consist of a large number of flexible grinding lamellae, the ends of which sweep over the surface of the sheet metal part 10 guided past under the grinding brushes 71 and can also penetrate a certain distance into recesses. At the same time, both the front and the side edges of the sheet metal part 10 are rounded.
  • the brush unit 70 has a height adjustment device arranged between the drive unit 72 and the machine frame 20, which is shown here by way of example is designed as a lifting spindle gear 74a, 74b.
  • a lifting spindle gear 74a, 74b is designed as a lifting spindle gear 74a, 74b.
  • the third processing unit is a second grinding belt unit 80 which is arranged behind the central brush unit 70 in the direction of passage of the sheet metal part 10 .
  • the second grinding belt unit 80 has a fine-grain grinding belt 81 which is endless and runs between a contact roller 82 and a deflection roller 83.
  • the second grinding belt unit 80 is driven in the same way as the first grinding belt unit 40 by means of an electric motor, which drives the contact roller 82 via a drive belt and a pulley (cf. 2 ).
  • the entire second sanding belt unit 80 is mounted on a second auxiliary frame 90, which in principle corresponds to the first auxiliary frame 50 for the first sanding belt unit 40 (cf. 2 ). Between the machine frame 20 and the second grinding belt unit 80 there is also an adjustment device which is designed as a lifting spindle gear 100 . This allows the distance between the conveyor belt 30 and the contact roller 32 of the second grinding belt unit 80 or the infeed to be finely adjusted by moving the auxiliary frame 90 vertically up or down on the vertical guides 24a, 24b of the machine frame 20.
  • the second grinding belt unit 80 with a fine-grain grinding belt 81 is used for fine grinding the upper side of the sheet metal part 10. The result is a cleanly deburred workpiece with rounded edges and a finely ground surface.

Abstract

Eine Maschine zum Bearbeiten von Blechteilen hat ein Maschinengestell (20), ein Transportband (30) zum Transportieren des zu bearbeitenden Blechteils (10) in horizontaler Richtung sowie eine Mehrzahl von Bearbeitungseinheiten, die entlang des Transportbands (30) hintereinander angeordnet sind, umfassend ein Bürstenaggregat (70) mit Schleifbürsten (71), ein erstes Schleifbandaggregat (40) und ein zweites Schleifbandaggregat (80). Die Schleifbandaggregate (40, 80) sind in Hilfsrahmen (50, 90) montiert, welche in vertikaler Richtung gegenüber dem Maschinengestell (20) verfahrbar sind. Zwischen Maschinengestell (20) und Hilfsrahmen (50, 90) sind Einstellvorrichtungen angeordnet. Auch das Bürstenaggregat (70) ist in vertikaler Richtung verfahrbar gelagert, sodass die verschiedenartigen Bearbeitungseinheiten getrennt voneinander einstellbar sind, um eine abgestufte Bearbeitung von Werkstücken in einem Durchlauf zu ermöglichen.A machine for processing sheet metal parts has a machine frame (20), a conveyor belt (30) for transporting the sheet metal part (10) to be processed in a horizontal direction and a plurality of processing units which are arranged one behind the other along the conveyor belt (30), comprising a brush unit (70) with grinding brushes (71), a first grinding belt unit (40) and a second grinding belt unit (80). The grinding belt units (40, 80) are mounted in auxiliary frames (50, 90) which can be moved in the vertical direction relative to the machine frame (20). Adjusting devices are arranged between the machine frame (20) and the auxiliary frame (50, 90). The brush unit (70) is also mounted so that it can be moved in the vertical direction, so that the different types of processing units can be adjusted separately from one another, in order to enable graduated processing of workpieces in one run.

Description

Die vorliegende Erfindung betrifft eine Maschine zum Bearbeiten von Blechteilen in mehreren aufeinanderfolgenden Bearbeitungsschritten, insbesondere Entgraten, Verrunden von Kanten und Schleifen der Oberfläche.The present invention relates to a machine for processing sheet metal parts in several consecutive processing steps, in particular deburring, rounding of edges and grinding the surface.

Beim Schneiden und Stanzen von Teilen aus Stahlblech bilden sich an den Schnittkanten und den Rändern von Löchern und Ausnehmungen störende Grate, die an der Oberseite überstehen. Insbesondere bei Werkstücken, die aus mehreren Zentimeter dickem Stahlblech hergestellt sind, bedarf es einigen technischen Aufwands, diese zu entgraten, die Kanten zu verrunden und schließlich die Oberfläche plan zu schleifen.When cutting and punching parts from sheet steel, annoying burrs form on the cut edges and the edges of holes and recesses, which protrude on the top. In the case of workpieces in particular, which are made of sheet steel several centimeters thick, some technical effort is required to deburr them, round the edges and finally grind the surface flat.

EP 3 085 491 A1 beschreibt eine Maschine zum Schleifen und Entgraten eines flächigen Werkzeugstücks mit einer horizontalen Schleifwalze. Eine solche Maschine kann zwar die Oberfläche schleifen, nicht aber Kanten verrunden oder stärkere Grate entfernen. EP 3 085 491 A1 describes a machine for grinding and deburring a flat tool piece with a horizontal grinding roller. Such a machine can grind the surface, but cannot round edges or remove larger burrs.

EP 2 792 450 beschreibt eine Entgratmaschine mit horizontal umlaufenden Riemen, die eine Vielzahl nebeneinander angeordneter Bürsten tragen. Die Bürsten bestehen aus einem fächerartigen Paket von Schleifpapier oder Schleifvlies. Das zu entgratende Blechteil wird quer zur Bewegungsrichtung der Bürsten vorgeschoben. Dabei streichen die Ränder der Schleifpapiere bzw. Schleifvliese quer zur Vorschubrichtung über die Oberfläche des Werkstücks und entfernen dadurch die überstehenden Grate. Aufgrund der Flexibilität der Bürsten können diese ein Stück weit in Ausnehmungen eindringen. EP 2 792 450 describes a deburring machine with horizontally revolving belts that carry a large number of brushes arranged next to one another. The brushes consist of a fan-shaped pack of abrasive paper or abrasive fleece. The sheet metal part to be deburred is crosswise to the direction of movement of the brushes advanced. The edges of the abrasive paper or abrasive fleece rub across the surface of the workpiece transversely to the feed direction and thereby remove the protruding burrs. Due to the flexibility of the brushes, they can penetrate a certain distance into recesses.

EP 1 293 292 A1 beschreibt eine Maschine zum Bearbeiten von Werkstücken mit einem runden Schleifteller, der sich um eine vertikale Achse dreht. An der Unterseite hat der Schleifteller radiale Bürsten, welche über die Werkstücke streichen. EP 1 293 292 A1 describes a machine for processing workpieces with a round sanding pad that rotates about a vertical axis. The underside of the sanding disc has radial brushes that sweep over the workpieces.

DE 10 2018 126 281 A1 beschreibt eine Schleifvorrichtung zum Bearbeiten eines metallenen Werkstückes im Durchlaufverfahren umfassend ein BreitbandSchleifaggregat und ein weiteres Schleifaggregat mit Tellerschleifern zur Erzeugung eines Finishes auf einer Oberfläche des Werkstücks. Eine Transportvorrichtung transportiert das Werkstück linear unter dem Breitbandschleifaggregat und unter dem weiteren Schleifaggregat hindurch. DE 10 2018 126 281 A1 describes a grinding device for processing a metal workpiece in a continuous process, comprising a wide-belt grinding unit and a further grinding unit with disk grinders for producing a finish on a surface of the workpiece. A transport device transports the workpiece linearly under the wide belt sanding unit and under the other sanding unit.

Schleif- und Entgratmaschinen müssen genau auf die Dicke der zu bearbeitenden Blechteile eingestellt werden, damit einerseits die Bearbeitungswerkzeuge mit genügendem Druck auf das Werkstück einwirken, andererseits aber die Bearbeitungswerkzeuge nicht beschädigt werden oder das durchlaufende Werkstück nicht an einem Werkzeug hängen bleibt oder festklemmt. Dabei ist die Einstellung eines Bürstenaggregats mit Schleifbürsten etwas weniger kritisch, weil die Schleifbürsten flexibel sind und dem Werkstück bis zu einem gewissen Grad ausweichen können. Bei einem Schleifbandaggregat mit quer zur Durchlaufrichtung angeordneter Kontaktwalze muss der Abstand zwischen dem Transportband und der Kontaktwalze bzw. die Zustellungen sehr genau eingestellt werden, damit sich einerseits das Werkstück noch unter der sich drehenden Kontaktwalze hindurchbewegen kann, andererseits aber das Schleifband mit hinreichendem Druck über die Oberfläche des Werkstücks schleift.Grinding and deburring machines must be set precisely to the thickness of the sheet metal parts to be processed, so that on the one hand the processing tools act on the workpiece with sufficient pressure, but on the other hand the processing tools are not damaged or the workpiece does not get caught on a tool or jammed. The setting of a brush unit with grinding brushes is a little less critical because the grinding brushes are flexible and can give way to the workpiece to a certain extent. In the case of a grinding belt unit with a contact roller arranged transversely to the direction of travel, the distance between the conveyor belt and the contact roller or the infeeds must be set very precisely so that on the one hand the workpiece can still move under the rotating contact roller and on the other hand the grinding belt can be pushed over the contact roller with sufficient pressure surface of the workpiece grinds.

Bei einer Maschine mit verketteten Bearbeitungseinheiten, bei der also eine Mehrzahl von Bearbeitungseinheiten entlang eines durchgängigen Transportbands in Durchlaufrichtung des Werkstücks hintereinander angeordnet sind, besteht die besondere Herausforderung darin, alle Bearbeitungseinheiten möglichst einfach, gleichwohl exakt auf die Dicke des zu bearbeitenden Blechteils einzustellen.In the case of a machine with linked processing units, in which a number of processing units are arranged one behind the other along a continuous conveyor belt in the direction of flow of the workpiece, the particular challenge is to adjust all processing units as simply as possible, yet precisely to the thickness of the sheet metal part to be processed.

Aufgabe der Erfindung ist die Konzeption einer Maschine zum Bearbeiten von Blechteilen mit einem Transportband zum Transportieren des zu bearbeitenden Werkstücks in horizontaler Richtung von einem Aufgabetisch zu einem Ausgabetisch und einer Mehrzahl von Bearbeitungseinheiten, die entlang des Transportbands hintereinander angeordnet sind und ein Bürstenaggregat mit Schleifbürsten und wenigstens ein Schleifbandaggregat umfasst, welche schnell und optimal auf unterschiedliche Dicken der zu bearbeitenden Blechteile eingestellt werden können.The object of the invention is the conception of a machine for processing sheet metal parts with a conveyor belt for transporting the workpiece to be processed in the horizontal direction from a loading table to an output table and a plurality of processing units which are arranged one behind the other along the conveyor belt and a brush unit with grinding brushes and at least includes a sanding belt unit that can be quickly and optimally adjusted to different thicknesses of the sheet metal parts to be processed.

Dieses technische Problem wird gelöst durch eine Maschine mit den Merkmalen des ersten Patentanspruchs.This technical problem is solved by a machine having the features of the first claim.

Bei der erfindungsgemäßen Maschine sind ein Bürstenaggregat mit Schleifbürsten und wenigstens ein Schleifbandaggregat mit quer zur Durchlaufrichtung angeordneter Kontaktwalze in Durchlaufrichtung des Werkstücks hintereinander entlang des Transportbands angeordnet. Dabei ist das Schleifbandaggregat in einem Hilfsrahmen montiert, welcher in dem Maschinengestell in vertikaler Richtung verfahrbar gelagert ist, und ist zwischen dem Maschinengestell und dem Hilfsrahmen eine Einstellvorrichtung angeordnet, mit welcher der Abstand zwischen dem Transportband und der Kontaktwalze des Schleifbandaggregats unabhängig von dem Bürstenaggregat mit Schleifbürsten und gegebenenfalls weiteren Bearbeitungsstationen eingestellt werden kann.In the machine according to the invention, a brush unit with grinding brushes and at least one grinding belt unit with a contact roller arranged transversely to the direction of passage are arranged one behind the other in the direction of passage of the workpiece along the conveyor belt. The sanding belt unit is mounted in an auxiliary frame, which is mounted in the machine frame so that it can be moved in the vertical direction, and an adjusting device is arranged between the machine frame and the auxiliary frame, with which the distance between the conveyor belt and the contact roller of the sanding belt unit can be adjusted independently of the brush unit with sanding brushes and optionally further processing stations can be set.

Die Anordnung des gesamten Schleifbandaggregats auf einem vertikal verfahrbaren Hilfsrahmen ermöglicht eine schnelle, einfache und sehr exakte Einstellung des Abstands zwischen Transportband und Kontaktwalze, also der Zustellung. Die Durchlaufhöhe des Werkstücks, die durch die vertikale Höhe des Transportbands im Maschinengestell vorgegeben ist, ist dabei die für alle Bearbeitungseinheiten geltende Bezugshöhe. Dies hat den Vorteil, dass zunächst die vertikale Höhe des Transportbands festgelegt werden kann, beispielsweise zwecks Anpassung an vor- oder nachgelagerte Arbeitsstationen im Rahmen einer Verkettung von Maschinen, und anschließend die Arbeitsspalten der verschiedenartigen Bearbeitungseinheiten getrennt voneinander einstellbar sind.The arrangement of the entire sanding belt unit on a vertically movable auxiliary frame enables quick, easy and very precise Adjustment of the distance between the conveyor belt and the contact roller, i.e. the infeed. The throughput height of the workpiece, which is determined by the vertical height of the conveyor belt in the machine frame, is the reference height that applies to all processing units. This has the advantage that first the vertical height of the conveyor belt can be set, for example for the purpose of adjustment to upstream or downstream work stations in the context of a chain of machines, and then the working gaps of the various processing units can be adjusted separately from one another.

Aufgrund der Kombination aus Bürstenaggregat mit Schleifbürsten und Schleifbandaggregat mit horizontaler Kontaktwalze kann die erfindungsgemäße Maschine insbesondere gestanzte oder geschnittene Blechteile mit Dicke bis zu mehreren Zentimetern mit hervorragenden Ergebnissen nachbearbeiten, indem sowohl die Kanten und Ränder entgratet und/oder verrundet als auch die Oberfläche geschliffen werden. Zweckmäßig erfolgt das Schleifen der Oberfläche durch das Schleifbandaggregat nach dem Entgraten bzw. Verrunden der Kanten durch das Bürstenaggregat.Due to the combination of brush unit with sanding brushes and sanding belt unit with horizontal contact roller, the machine according to the invention can, in particular, finish stamped or cut sheet metal parts with a thickness of up to several centimeters with excellent results, by both deburring and/or rounding the edges and edges and sanding the surface. The surface is expediently sanded by the sanding belt unit after the edges have been deburred or rounded by the brush unit.

Bei einer bevorzugten Ausführung der Maschine sind drei Bearbeitungseinheiten entlang des Transportbands hintereinander angeordnet, nämlich an erster Stelle ein erstes Schleifbandaggregat in einem ersten Hilfsrahmen, an zweiter Stelle ein zentrales Bürstenaggregat mit Schleifbürsten und an dritter Stelle ein zweites Schleifbandaggregat in einem zweiten Hilfsrahmen hinter dem zentralen Bürstenaggregat. Bei einer solchen Anordnung und Kombination von Bearbeitungseinheiten kann eine abgestufte Bearbeitung von Werkstücken in einem Durchlauf erfolgen.In a preferred embodiment of the machine, three processing units are arranged one behind the other along the conveyor belt, namely in the first place a first sanding belt unit in a first subframe, in the second place a central brush unit with sanding brushes and in the third place a second sanding belt unit in a second subframe behind the central brush unit . With such an arrangement and combination of processing units, work pieces can be processed in stages in one pass.

Vorteilhaft kann das erste Schleifbandaggregat ein grobkörniges Schleifband zum Entgraten und das zweite Schleifbandaggregat ein feinkörniges Schleifband zum Schleifen der Oberfläche des Werkstücks haben. Das zentrale Bürstenaggregat in der Mitte dient dann vor allem dem Verrunden von Kanten an den Ausnehmungen in der Oberfläche des Blechteils. Ein Schleifbandaggregat mit Kontaktwalze kann nämlich allenfalls die Vorderkante eines Blechteils entgraten, wohingegen die flexiblen Schleifbürsten des Bürstenaggregats ein Stück weit in Ausnehmungen des Blechteils eindringen.The first grinding belt unit can advantageously have a coarse-grain grinding belt for deburring and the second grinding belt unit can have a fine-grain grinding belt for grinding the surface of the workpiece. The central brush unit in the middle is then primarily used to round off edges the recesses in the surface of the sheet metal part. A sanding belt unit with a contact roller can at most deburr the front edge of a sheet metal part, whereas the flexible sanding brushes of the brush unit penetrate a little into recesses in the sheet metal part.

Die Unteransprüche enthalten weitere vorteilhafte und zweckmäßige Ausführungen der erfindungsgemäßen Maschine.The dependent claims contain further advantageous and expedient embodiments of the machine according to the invention.

Ein Ausführungsbeispiel der Erfindung wird nachstehend unter Bezugnahme auf die Abbildungen erläutert. Es zeigen:

Figur 1
eine Maschine zum Bearbeiten von Blechteilen, in einer schematischen Darstellung von der Seite;
Figur 2
die Maschine von Figur 1, von vorne.
An embodiment of the invention is explained below with reference to the figures. Show it:
figure 1
a machine for processing sheet metal parts, in a schematic representation from the side;
figure 2
the machine from figure 1 , from the front.

Die Maschine dient zum Bearbeiten von relativ dicken Blechteilen 10 in drei aufeinanderfolgenden Bearbeitungsschritten, nämlich Entgraten, Verrunden der Kanten und Schleifen der Oberfläche.The machine is used for processing relatively thick sheet metal parts 10 in three consecutive processing steps, namely deburring, rounding the edges and grinding the surface.

Ein Maschinengestell 20 umfasst im Wesentlichen vordere und hintere Vertikalholme 21a, 21b und zwischengesetzte Horizontalholme 22. Im Bereich der unteren Horizontalholme 22b sind vier parallele Vertikalführungen 23a, 23b angeordnet.A machine frame 20 essentially comprises front and rear vertical bars 21a, 21b and horizontal bars 22 placed between them. Four parallel vertical guides 23a, 23b are arranged in the region of the lower horizontal bars 22b.

Ein Transportband 30 ist mit Abstand vom Boden in dem Maschinengestell 20 gelagert. Das Transportband 30 umfasst ein Arbeitstrum 31 und ein Leertrum 32 und verläuft zwischen einer Umlenkrolle 33a und einer Antriebsrolle 33b, die sich quer zur Transportrichtung erstrecken. Das Transportband 30 überragt das Maschinengestell 20 am Einlass und Auslass der Maschine. Die über das Maschinengestell 20 hinausragenden Abschnitte des Transportbands 30 bilden eine Aufladefläche 34 und eine Entladefläche 35. Das zu bearbeitende Blechteil 10 wird in Pfeilrichtung von der Aufladefläche 34 zu der Entladefläche 35 kontinuierlich transportiert, um nacheinander drei verschiedene Bearbeitungseinheiten zu durchlaufen.A conveyor belt 30 is mounted in the machine frame 20 at a distance from the floor. The conveyor belt 30 comprises a working strand 31 and a slack strand 32 and runs between a deflection roller 33a and a drive roller 33b, which extend transversely to the direction of transport. The conveyor belt 30 protrudes beyond the machine frame 20 at the inlet and outlet of the machine. The sections of the conveyor belt 30 that protrude beyond the machine frame 20 form a loading surface 34 and an unloading surface 35. The sheet metal part 10 to be processed is moved in the direction of the arrow from the loading surface 34 to the unloading surface 35 continuously transported to successively pass through three different processing units.

Erste Bearbeitungseinheit ist ein erstes Schleifbandaggregat 40 mit einem grobkörnigen Schleifband 41, welches endlos ist und zwischen einer Kontaktwalze 42 und einer Umlenkrolle 43 umläuft. Die Kontaktwalze 42 hat eine Riemenscheibe 44, die von einem Elektromotor 45 über einen Treibriemen 46 angetrieben wird. Die Umlenkrolle 43 ist auf einer Lagergabel 47 drehbar gelagert.The first processing unit is a first grinding belt unit 40 with a coarse-grain grinding belt 41 which is endless and runs between a contact roller 42 and a deflection roller 43 . The contact roller 42 has a pulley 44 which is driven by an electric motor 45 via a drive belt 46. The deflection roller 43 is rotatably mounted on a bearing fork 47 .

Das erste Schleifbandaggregat 40 ist komplett in einen ersten Hilfsrahmen 50 eingebaut. Der Hilfsrahmen 50 umfasst zwei parallele und im Abstand voneinander angeordnete Vertikalschienen 51a, 51b und einen diese verbindenden Querträger 52 (vgl. Fig. 2). Der Hilfsrahmen 50 hat einen Querschnitt, der im Prinzip einem umgekehrten U entspricht, wobei die Vertikalschienen 51a, 51b die U-Schenkel und der Querträger 52 den U-Rücken bilden. Die Vertikalschienen 51a, 51b verlaufen seitlich in einem Zwischenraum zwischen dem Maschinengestell 20 und dem Transportband 30.The first grinding belt unit 40 is installed completely in a first auxiliary frame 50 . The auxiliary frame 50 comprises two parallel vertical rails 51a, 51b arranged at a distance from one another and a cross member 52 connecting them (cf. 2 ). The auxiliary frame 50 has a cross-section which, in principle, corresponds to an inverted U, with the vertical rails 51a, 51b forming the U-legs and the crossbeam 52 forming the U-back. The vertical rails 51a, 51b run laterally in an intermediate space between the machine frame 20 and the conveyor belt 30.

Die Vertikalschienen 51a, 51b haben ihrerseits einen Querschnitt in Form eines flachen, großen U, wobei die U-Rücken gegeneinander weisen. Innerhalb des U-förmigen Querschnitts der Vertikalschiene 51a sind die Riemenscheibe 44 und der Treibriemen 46 angeordnet, der Elektromotor 45 sitzt platzsparend an der Außenseite (vgl. Fig. 2).The vertical rails 51a, 51b in turn have a cross section in the shape of a flat, large U, with the ridges of the U pointing towards one another. The pulley 44 and the drive belt 46 are arranged within the U-shaped cross section of the vertical rail 51a, the electric motor 45 is located on the outside to save space (cf. 2 ).

Die Vertikalschienen 51a, 51b des ersten Hilfsrahmens 50 sind in den Vertikalführungen 23a, 23b des Maschinengestells 20 gleitend gelagert.The vertical rails 51a, 51b of the first auxiliary frame 50 are slidably mounted in the vertical guides 23a, 23b of the machine frame 20.

Zwischen der Lagergabel 47 des Schleifbandaggregats 40 und dem Querträger 52 des Hilfsrahmens 50 sitzt ein Spannzylinder 53. Eine Spannvorrichtung 48 mit handbetätigtem Spannhebel ermöglicht das Spannen des Querträgers 52 auf dem Hilfsrahmen 50. Die Spannvorrichtung 48 wird gelöst, um das Schleifband 41 zu wechseln. Hierbei wird die Spannung zwischen Kontaktwalze 42 und Umlenkrolle 43 durch den Spannzylinder 53 gelöst. Das Schleifband 41 kann dann parallel zur Kontaktwalze 42 (in Fig. 2 nach links) herausgezogen werden.A clamping cylinder 53 is located between the bearing fork 47 of the sanding belt unit 40 and the crossbeam 52 of the auxiliary frame 50. A clamping device 48 with a manually operated clamping lever enables the crossbeam 52 to be clamped on the auxiliary frame 50. The clamping device 48 is released in order to change the sanding belt 41. Here, the tension between Contact roller 42 and deflection roller 43 released by the clamping cylinder 53. The abrasive belt 41 can then be parallel to the contact roller 42 (in 2 to the left) can be pulled out.

Zu dem Hilfsrahmen 50 des ersten Schleifbandaggregats 40 gehört eine Einstellvorrichtung, die hier beispielhaft als Hubspindelgetriebe 60 ausgebildet ist. Damit lässt sich der Abstand zwischen dem Transportband 30 und der Kontaktwalze 42 des Schleifbandaggregats 40 bzw. die Zustellung sehr exakt einstellen und bei Bedarf auch schnell anpassen, wobei der Hilfsrahmen 50 auf den Vertikalführungen 23a, 23b in vertikaler Richtung nach oben oder unten verfahren wird.The auxiliary frame 50 of the first grinding belt unit 40 includes an adjustment device, which is configured here as a lifting spindle gear 60, for example. This allows the distance between the conveyor belt 30 and the contact roller 42 of the grinding belt unit 40 or the infeed to be adjusted very precisely and, if necessary, to be adjusted quickly, with the auxiliary frame 50 being moved vertically up or down on the vertical guides 23a, 23b.

Die zweite Bearbeitungseinheit ist ein Bürstenaggregat 70, das in Durchlaufrichtung des Blechteils 10 hinter dem ersten Schleifbandaggregat 40 angeordnet ist.The second processing unit is a brush unit 70 which is arranged behind the first sanding belt unit 40 in the direction of passage of the sheet metal part 10 .

Das Bürstenaggregat 70 hat insgesamt acht Schleifbürsten 71, von denen vier in Mitlaufrichtung und vier in Gegenlaufrichtung um horizontale Achsen rotieren. In Fig. 1 ist nur die vordere Reihe mit vier Schleifbürsten 71 zu sehen.The brush unit 70 has a total of eight grinding brushes 71, four of which rotate in the following direction and four in the opposite direction about horizontal axes. In 1 only the front row with four grinding brushes 71 can be seen.

Eine elektrische Antriebseinheit 72 treibt die Schleifbürsten 71 über ein Verteilergetriebe 73 an. Während die Antriebseinheit 72 fest in dem Maschinengestell 20 hängt, ist das Verteilergetriebe 73 um seine vertikale Achse drehbar. Dadurch ergibt sich eine Multirotations-Bewegung der Schleifbürsten 71. Die Schleifbürsten 71 bestehen aus einer Vielzahl flexibler Schleiflamellen, deren Enden über die Oberfläche des unter den Schleifbürsten 71 vorbeigeführten Blechteils 10 streichen und dabei ein Stück weit auch in Ausnehmungen eindringen können. Gleichzeitig werden sowohl die vorderen als auch die seitlichen Kanten des Blechteils 10 verrundet.An electric drive unit 72 drives the grinding brushes 71 via a transfer case 73 . While the drive unit 72 is fixed in the machine frame 20, the transfer case 73 is rotatable about its vertical axis. This results in a multi-rotational movement of the grinding brushes 71. The grinding brushes 71 consist of a large number of flexible grinding lamellae, the ends of which sweep over the surface of the sheet metal part 10 guided past under the grinding brushes 71 and can also penetrate a certain distance into recesses. At the same time, both the front and the side edges of the sheet metal part 10 are rounded.

Das Bürstenaggregat 70 hat eine zwischen der Antriebseinheit 72 und dem Maschinengestell 20 angeordnete Höhenverstelleinrichtung, die hier beispielhaft als Hubspindelgetriebe 74a, 74b ausgeführt ist. Dadurch lässt sich der Bearbeitungsspalt bzw. die Zustellung, also der Abstand zwischen den Schleifbürsten 71 und dem Arbeitstrum 31 des Transportbands 30, sehr exakt einstellen.The brush unit 70 has a height adjustment device arranged between the drive unit 72 and the machine frame 20, which is shown here by way of example is designed as a lifting spindle gear 74a, 74b. As a result, the processing gap or the infeed, ie the distance between the grinding brushes 71 and the working run 31 of the conveyor belt 30, can be set very precisely.

Dritte Bearbeitungseinheit ist ein zweites Schleifbandaggregat 80, das in Durchlaufrichtung des Blechteils 10 hinter dem zentralen Bürstenaggregat 70 angeordnet ist. Anders als das erste Schleifbandaggregat 40 hat das zweite Schleifbandaggregat 80 ein feinkörniges Schleifband 81, das endlos ist und zwischen einer Kontaktwalze 82 und einer Umlenkrolle 83 umläuft. Angetrieben wird das zweite Schleifbandaggregat 80 in dergleichen Weise wie das erste Schleifbandaggregat 40 mittels Elektromotor, der über einen Treibriemen und eine Riemenscheibe die Kontaktwalze 82 antreibt (vgl. Fig. 2).The third processing unit is a second grinding belt unit 80 which is arranged behind the central brush unit 70 in the direction of passage of the sheet metal part 10 . Unlike the first grinding belt unit 40, the second grinding belt unit 80 has a fine-grain grinding belt 81 which is endless and runs between a contact roller 82 and a deflection roller 83. The second grinding belt unit 80 is driven in the same way as the first grinding belt unit 40 by means of an electric motor, which drives the contact roller 82 via a drive belt and a pulley (cf. 2 ).

Das gesamte zweite Schleifbandaggregat 80 ist auf einem zweiten Hilfsrahmen 90 montiert, welcher im Prinzip dem ersten Hilfsrahmen 50 für das erste Schleifbandaggregat 40 entspricht (vgl. Fig. 2). Zwischen dem Maschinengestell 20 und dem zweiten Schleifbandaggregat 80 ist gleichfalls eine Einstellvorrichtung angeordnet, welche als Hubspindelgetriebe 100 ausgebildet ist. Damit lässt sich der Abstand zwischen dem Transportband 30 und der Kontaktwalze 32 des zweiten Schleifbandaggregats 80 bzw. die Zustellung fein einstellen, indem der Hilfsrahmen 90 auf den Vertikalführungen 24a, 24b des Maschinengestells 20 in vertikaler Richtung nach oben oder unten verfahren wird.The entire second sanding belt unit 80 is mounted on a second auxiliary frame 90, which in principle corresponds to the first auxiliary frame 50 for the first sanding belt unit 40 (cf. 2 ). Between the machine frame 20 and the second grinding belt unit 80 there is also an adjustment device which is designed as a lifting spindle gear 100 . This allows the distance between the conveyor belt 30 and the contact roller 32 of the second grinding belt unit 80 or the infeed to be finely adjusted by moving the auxiliary frame 90 vertically up or down on the vertical guides 24a, 24b of the machine frame 20.

Das zweite Schleifbandaggregat 80 mit feinkörnigem Schleifband 81 dient dem Feinschleifen der Oberseite des Blechteils 10. Ergebnis ist ein sauber entgratetes Werkstück mit verrundeten Kanten und fein geschliffener Oberfläche.The second grinding belt unit 80 with a fine-grain grinding belt 81 is used for fine grinding the upper side of the sheet metal part 10. The result is a cleanly deburred workpiece with rounded edges and a finely ground surface.

BezugszeichenReference sign

1010
Blechteilsheet metal part
2020
Maschinengestellmachine frame
21a, 21b21a, 21b
Vertikalholmevertical bars
22a, 22b22a, 22b
Horizontalholmehorizontal bars
23a, 23b23a, 23b
Vertikalführungenvertical guides
24a, 24b24a, 24b
Vertikalführungenvertical guides
3030
Transportbandconveyor belt
3131
Arbeitstrumworking strand
3232
Leertrumslack side
33a33a
Umlenkrollepulley
33b33b
Antriebsrolledrive roller
3434
Aufladeflächeloading area
3535
Entladeflächeunloading area
4040
erstes Schleifbandaggregatfirst sanding belt unit
4141
Schleifbandsanding belt
4242
Kontaktwalzecontact roller
4343
Umlenkrollepulley
4444
Riemenscheibepulley
4545
Elektromotorelectric motor
4646
Treibriemendrive belt
4747
Lagergabelbearing fork
4848
Spannvorrichtungclamping device
5050
erster Hilfsrahmen (für 40)first subframe (for 40)
51a, 51b51a, 51b
Vertikalschienenvertical rails
5252
Querträgercross member
5353
Spannzylinderclamping cylinder
6060
Hubspindelgetriebe (für 40)Screw jack gear (for 40)
7070
Bürstenaggregatbrush unit
7171
Schleifbürstenabrasive brushes
7272
Antriebseinheitdrive unit
7373
Verteilergetriebetransfer case
74a, 74b74a, 74b
Hubspindelgetriebe (für 70)Screw jack gear (for 70)
8080
zweites Schleifbandaggregatsecond sanding belt unit
8181
Schleifbandsanding belt
8282
Kontaktwalzecontact roller
8383
Umlenkrollepulley
9090
zweiter Hilfsrahmen (für 80)second subframe (for 80)
100100
Hubspindelgetriebe (für 80)Screw jack gear (for 80)

Claims (12)

Maschine zum Bearbeiten von Blechteilen in mehreren aufeinanderfolgenden Bearbeitungsschritten, insbesondere Entgraten, Verrunden von Kanten und Schleifen der Oberfläche, mit einem Maschinengestell (20); einem Transportband (30) zum Transportieren des zu bearbeitenden Blechteils (10) in horizontaler Richtung von einem Aufgabetisch (34) zu einem Ausgabetisch (35); einer Mehrzahl von Bearbeitungseinheiten, die entlang des Transportbands in Durchlaufrichtung des Blechteils (10) hintereinander angeordnet sind und ein Bürstenaggregat (70) mit flexiblen Schleifbürsten (71) und wenigstens ein Schleifbandaggregat (40, 80) mit einer quer zur Durchlaufrichtung angeordneten Kontaktwalze (42, 82) umfassen; einem in dem Maschinengestell (20) in vertikaler Richtung verfahrbar gelagerten Hilfsrahmen (50, 90), auf dem das Schleifbandaggregat (40, 80) montiert ist; einer zwischen dem Maschinengestell (20) und dem Hilfsrahmen (50, 90) angeordneten Einstellvorrichtung zum Einstellen des Abstands zwischen dem Transportband (30) und der Kontaktwalze (42, 82) des Schleifbandaggregats (40, 80) unabhängig von den übrigen Bearbeitungsstationen. Machine for processing sheet metal parts in several consecutive processing steps, in particular deburring, rounding of edges and grinding the surface a machine frame (20); a conveyor belt (30) for transporting the sheet metal part (10) to be processed in the horizontal direction from a loading table (34) to an output table (35); a plurality of processing units which are arranged one behind the other along the conveyor belt in the direction of passage of the sheet metal part (10) and a brush unit (70) with flexible grinding brushes (71) and at least one grinding belt unit (40, 80) with a contact roller (42) arranged transversely to the direction of passage, 82) include; an auxiliary frame (50, 90) which is mounted in the machine frame (20) so that it can be moved in the vertical direction and on which the grinding belt unit (40, 80) is mounted; an adjusting device arranged between the machine frame (20) and the auxiliary frame (50, 90) for adjusting the distance between the conveyor belt (30) and the contact roller (42, 82) of the grinding belt unit (40, 80) independently of the other processing stations. Maschine nach Anspruch 1, dadurch gekennzeichnet, dass der Hilfsrahmen (50, 90) einen Querschnitt hat, der im Prinzip einem umgekehrten U entspricht, wobei die U-Schenkel in einem Zwischenraum zwischen dem Transportband (30) und dem Maschinengestell (20) verlaufen.Machine according to Claim 1, characterized in that the auxiliary frame (50, 90) has a cross-section which in principle corresponds to an inverted U, the legs of the U running in an intermediate space between the conveyor belt (30) and the machine frame (20). Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Hilfsrahmen (50, 90) zwei parallele Vertikalschienen (51a, 51b) hat, welche in Vertikalführungen (23a, 23b; 24a, 24b) des Maschinengestells (20) gleitend gelagert sind.Machine according to one of the preceding claims, characterized in that the auxiliary frame (50, 90) has two parallel vertical rails (51a, 51b) which are slidably mounted in vertical guides (23a, 23b; 24a, 24b) of the machine frame (20). Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Einstellvorrichtung ein Hubspindelgetriebe (60) umfasst.Machine according to one of the preceding claims, characterized in that the adjustment device comprises a lifting spindle gear (60). Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Schleifbandaggregat (80) in Durchlaufrichtung hinter dem Bürstenaggregat (70) angeordnet ist.Machine according to one of the preceding claims, characterized in that the grinding belt unit (80) is arranged behind the brush unit (70) in the direction of passage. Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Bürstenaggregat (70) ungefähr in der Mitte des Maschinengestells (20) angeordnet ist und ein erstes Schleifbandaggregat (40) in einem ersten Hilfsrahmen (50) in Durchlaufrichtung vor dem zentralen Bürstenaggregat angeordnet ist und ein zweites Schleifbandaggregat (80) in einem zweiten Hilfsrahmen (90) in Durchlaufrichtung hinter dem zentralen Bürstenaggregat angeordnet ist.Machine according to one of the preceding claims, characterized in that the brush unit (70) is arranged approximately in the middle of the machine frame (20) and a first grinding belt unit (40) is arranged in a first auxiliary frame (50) in the direction of passage in front of the central brush unit and a second sanding belt unit (80) is arranged in a second auxiliary frame (90) behind the central brush unit in the direction of passage. Maschine nach Anspruch 6, dadurch gekennzeichnet, dass das Bürstenaggregat (70) in vertikaler Richtung verfahrbar gelagert ist zum Einstellen des Abstands zwischen Bürsten (71) und Transportband (30) unabhängig von den übrigen Bearbeitungsstationen.Machine according to Claim 6, characterized in that the brush unit (70) is mounted so that it can be moved in the vertical direction in order to adjust the distance between the brushes (71) and the conveyor belt (30) independently of the other processing stations. Maschine nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass das erste Schleifbandaggregat (40) ein grobkörniges Schleifband (41) zum Entgraten hat und das zweite Schleifbandaggregat (80) ein feinkörniges Schleifband (81) zum Schleifen der Oberfläche des Blechteils (10) hat.Machine according to Claim 6 or 7, characterized in that the first grinding belt unit (40) has a coarse-grain grinding belt (41) for deburring and the second grinding belt unit (80) has a fine-grain grinding belt (81) for grinding the surface of the sheet metal part (10). Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Bürstenaggregat (70) eine Mehrzahl von zylindrischen, um horizontale Achsen rotierende Schleifbürsten (71) hat.Machine according to one of the preceding claims, characterized in that the brush unit (70) has a plurality of cylindrical grinding brushes (71) rotating about horizontal axes. Maschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Bürstenaggregat (70) in dem Maschinengestell (20) hängend derart montiert ist, dass die Schleifbürsten (71) in vorgegebenem Abstand über dem Transportband (30) schweben.Machine according to one of the preceding claims, characterized in that the brush unit (70) is suspended in the machine frame (20) in such a way that the grinding brushes (71) float above the conveyor belt (30) at a predetermined distance. Maschine nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine zwischen dem Maschinengestell (20) und dem Bürstenaggregat (70) angeordnete Höhenverstellvorrichtung zum Verstellen des Abstands zwischen dem Transportband und den Schleifbürsten.Machine according to one of the preceding claims, characterized by a height adjustment device arranged between the machine frame (20) and the brush unit (70) for adjusting the distance between the conveyor belt and the grinding brushes. Maschine nach Anspruch 10, dadurch gekennzeichnet, dass die Höhenverstellvorrichtung ein Hubspindelgetriebe (100) umfasst.Machine according to Claim 10, characterized in that the height adjustment device comprises a lifting spindle gear (100).
EP21209018.7A 2020-12-16 2021-11-18 Machine for working sheet metal parts Pending EP4015147A1 (en)

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EP2792450A1 (en) 2013-04-19 2014-10-22 Arku Maschinenbau Gmbh Machine for deburring
EP3085491A1 (en) 2015-04-24 2016-10-26 Arku Maschinenbau Gmbh Device for grinding and deburring of a planar workpiece
DE212017000255U1 (en) * 2017-12-18 2019-08-06 Lanuss Industrial Equipment (Suzhou) Co., Ltd. deburring
DE102018126281A1 (en) 2018-10-23 2020-04-23 Jakob Löwer Inh. von Schumann GmbH & Co. KG Grinding device for processing a metal workpiece in a continuous process
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117325032A (en) * 2023-12-02 2024-01-02 太原市佳源金属制品有限公司 Trimming device for rail transit vehicle production and processing
CN117325032B (en) * 2023-12-02 2024-02-06 太原市佳源金属制品有限公司 Trimming device for rail transit vehicle production and processing

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