EP1924403B1 - Device for the machining, by deburring or grinding, of a belt-shaped or plate-shaped metallic workpiece - Google Patents
Device for the machining, by deburring or grinding, of a belt-shaped or plate-shaped metallic workpiece Download PDFInfo
- Publication number
- EP1924403B1 EP1924403B1 EP06791377A EP06791377A EP1924403B1 EP 1924403 B1 EP1924403 B1 EP 1924403B1 EP 06791377 A EP06791377 A EP 06791377A EP 06791377 A EP06791377 A EP 06791377A EP 1924403 B1 EP1924403 B1 EP 1924403B1
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- European Patent Office
- Prior art keywords
- belt
- workpiece
- machining
- grinding
- region
- Prior art date
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- 238000003754 machining Methods 0.000 title claims description 42
- 229920002635 polyurethane Polymers 0.000 claims description 6
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- 238000012545 processing Methods 0.000 description 57
- 239000002184 metal Substances 0.000 description 13
- 238000005520 cutting process Methods 0.000 description 10
- 238000011161 development Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
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- 238000010276 construction Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
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- 239000003082 abrasive agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000010073 coating (rubber) Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
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- 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
- B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
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- 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
- B24B27/00—Other grinding machines or devices
- B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
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- 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
- B24B9/002—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor for travelling workpieces
Definitions
- the invention relates to a device for processing a strip-shaped or plate-shaped metal workpiece, in particular for deburring cutting edges and / or for grinding surfaces of the workpiece.
- a generic device for processing a band-shaped or plate-shaped metal workpiece is from the WO 2004/039536 A1 known.
- burrs are formed at the cutting edges, which must be removed before further processing of the workpiece, for example before it is painted.
- plate-shaped metallic workpieces often on their surfaces or main surfaces discoloration, residue or the like, which must be removed before further processing or finishing.
- a paint or galvanizing applied jumps off relatively quickly.
- the surfaces of the metallic workpieces are ground off before painting or galvanizing.
- Devices for deburring and fine grinding are known from the general state of the art.
- rollers used as well as plate-shaped, rotating brush tools.
- the workpiece to be machined is placed on a horizontal working plane or a conveyor belt and performed under the roller or the rotary brush tool by hand or automatically.
- the disadvantage here is that the workpieces are usually always inserted at the same point, so that an uneven wear of the roller or the brush tools.
- Such machines can for example have a working width of 1 to 2 m, but in practice usually equipped with smaller metal blanks. This has the consequence that a roll with for example 2 m in length is only claimed on the first 50 cm of its length of metal blanks and thus wears only in this area.
- the roller must be replaced as soon as this area is worn out too much, although three quarters of the roller surface is still well preserved and usable. An exchange is therefore unavoidable, since when introducing a large workpiece now no longer grind the first 50 cm of the roller. The uneven wear of the roller and the resulting different pressure on the workpiece result in inferior grinding results.
- a disadvantage of the known deburring and grinding machines is also that the workpiece must be inserted twice so that both main surfaces of the workpiece can be edited.
- Another disadvantage of the known machines is the high drive power, the high space requirement and the high acquisition and maintenance costs.
- FIG. 1 From the general state of the art are also -as in FIG. 1 shown circulating abrasive belts known, which rotate counter to the feed direction of the workpiece to be machined.
- the abrasive belts have correspondingly large widths, so that accordingly wide workpieces can be edited.
- Analogous to the known rolling and brushing tools there is the disadvantage that the Abrasive belt is worn unevenly when the supplied metal piece has a width which is less than the width of the abrasive belt.
- the sanding belt is how it turned out FIG. 1 results, aligned substantially vertically, wherein the workpiece to be machined is pushed through below a narrow end face of the abrasive belt.
- the sanding belt is driven by a drive shaft.
- EP 0 187 624 A2 relates to a belt grinder for open-laid wood panels, which has on a frame an endless sanding belt which is guided over a plurality of wheels, at least one of which is a drive wheel, wherein the sanding belt spatially separated from a transport table on which a panel is to be processed and has over this protruding work guide and at least one pressure piece, which acts on the working of this sanding belt to press this against the transport table.
- the present invention has for its object to provide a quick, simple and inexpensive device for processing strip or plate-shaped metal workpieces, in particular for deburring edges and for grinding the surfaces.
- the machining element is designed as a grinding belt, which is at least approximately linearly guided by a rotating drive means obliquely or transversely to the feed direction of the workpiece in the region of the workpiece to be machined, takes place Processing of the workpiece according to the in the WO 2004/039536 A1 and in the EP 0 187 624 A2 described principle. This also results in the advantages that result from machining a workpiece obliquely or transversely to the feed direction of the same. The width of the grinding belt thus does not have to correspond to the width of the workpiece to be machined.
- the abrasive belt is also uniformly worn regardless of the supplied workpiece, since not only only a certain portion of the grinding belt is used for machining the workpiece, but the grinding belt over the entire length, which is present for the implementation of the workpiece, machined past the workpiece becomes.
- the abrasive belt allows a particularly preferred processing of the surfaces, that is, the main surfaces of the band or plate-shaped metal workpieces so that they are reliably freed of residues (eg. Resulting from cutting operations or the like) and thus in the further processing or finishing of the metal workpieces no quality issues occur.
- the abrasive belt also processes cut edges and the like to deburr them. In particular, in plasma cutting, but also in laser cutting or other cutting methods created at the cutting edges and cut surfaces burrs that must be removed.
- the grinding belt thus both a deburring of the cutting edges and cut surfaces can be achieved as well as a machining of the surfaces of the workpiece in one operation. This preferably with a relatively narrow and therefore cost-effective grinding belt which wears evenly and thus ensures a uniform machining of the workpieces.
- the grinding belt is in operative connection with the drive device in the region of the workpiece to be machined such that the drive device drives the grinding belt. Furthermore, it is provided that the grinding belt and the drive device are separated from one another at least in a region remote from the workpiece.
- the drive device fulfills several functions.
- the grinding belt is driven by the drive device, on the other hand supports and guides the drive device, the grinding belt in the region of the workpiece to be machined.
- some support of the sanding belt is necessary for it to be in contact with the workpiece can not escape.
- the abrasive belt at a deflection point that is, at a point where the abrasive belt was driven by a drive shaft or was deflected by a deflection roller, comes into contact with the workpiece.
- the drive or deflection roller has kept the abrasive belt in contact with the workpiece.
- the drive device now ensures that the grinding belt receives the necessary support during machining of the workpiece. Due to the fact that the grinding belt is also driven by the drive device, the feed speed of the grinding belt and the drive device in the region of the workpiece to be machined is substantially identical, so that no or only little heat development takes place between the grinding belt and the drive device.
- the grinding belt and the drive device are separated from one another at least in a region remote from the workpiece, that is to say in an area in which the grinding belt does not process the workpiece.
- the abrasive belt can be mounted and tensioned independently of the drive device, on the other hand, since the drive device has a revolving belt over which the abrasive belt is driven and which is acted upon by a spring force in the region of the workpiece to be machined Strains are compensated.
- the drive device such that it has a drive shaft and a deflection shaft around which a belt revolves
- the belt which can be made of polyurethane, for example, compensates for this Changes in length.
- the abrasive belt has no such elongation behavior. An elongation of the abrasive belt would lead to a tearing of the abrasive belt. By a stretching movement of the belt to the sanding belt would also have a high heat development due to Frictional forces arise, which has a negative effect on the functioning of the device.
- the grinding belt and the drive device rotate independently of one another at least in a region remote from the workpiece, the development of heat generated between the grinding belt and the drive device or the belt of the drive device is minimized.
- the belt can be upset and stretched without affecting the sanding belt.
- the elongation behavior of the belt is relatively constant, so that in this area, in which the grinding belt is in operative connection with the belt and supported and guided by it, no appreciable heat development due to the stretching behavior of the belt.
- an area remote from the workpiece also means that it is only one (or more) portion of the entire area in which the abrasive belt is remote from the workpiece.
- the grinding belt extends in a machining area at least approximately linear.
- the processing area will correspond to the area which is at its maximum available for carrying out the workpiece to be machined.
- a linear course of the sanding belt in this area enables uniform machining.
- the grinding belt extends in an area in contact before and / or after the processing area at an angle to the processing area and the grinding belt in the contact area in operative connection with the drive device or a belt of the drive device is.
- the area for driving the abrasive belt increases. Due to the slope, the belt tensions the sanding belt so that it is advantageously driven and guided. In experiments, it has been found that the belt drives the grinding belt in the contact area, ie in the slope better or more effectively than on the linear path of the processing area.
- the processing area is preferably formed between a drive shaft and a deflection shaft of the drive device.
- the belt is guided over rollers in the area of the workpiece to be machined on the side facing away from the workpiece.
- the belt receives the necessary support to keep the grinding belt in contact with the workpiece.
- the belt presses the abrasive belt against the workpiece with a constant force.
- the belt by a plurality of independent Spring elements is acted upon.
- the abrasive belt thus penetrates in a slightly uneven surface of the workpiece in recesses of the workpiece.
- the abrasive belt With a rigid support of the abrasive belt, as is common in the art, the abrasive belt first grinds the "bumps" of the workpiece. Only when the elevations have been ground to the point that they have reached the level of the "depressions", the wells are ground.
- the abrasive belt is pressed after passing over an increase in the subsequent depression, so that the surface is ground uniformly.
- rollers are provided, over which the belt is guided, wherein the rollers are each acted upon by a spring element.
- the first and last role is rigid, that is unsprung formed. This ensures that the grinding belt extends substantially linearly or rectilinearly between the first and the last roller and thus in the region of the workpiece to be machined or the machining area. Unevenness in the workpiece can be compensated by the sprung rollers, without thereby affecting the substantially linear course of the grinding belt in the machining area.
- the belt comprises a base belt on which a comparatively soft, in particular elastic, resilient layer is arranged.
- a comparatively soft, in particular elastic, resilient layer is arranged.
- unevenness eg increases on a workpiece or thickness tolerances in To compensate for the area of elasticity of the elastic layer.
- this can be completely dispensed with additional spring elements.
- the base belt is coated with a comparatively soft elastic layer. The layer should be elastically yielding so that after deformation resulting from unevenness or thickness tolerances of a workpiece takes place immediately after elimination of the deformation force returning to the original state.
- the belt is bevelled on the longitudinal side facing the workpiece to be introduced in order to form an inlet region.
- the processing unit is inclined to form an inlet region.
- the inclination of the processing unit is made so that an enlarged inlet region can be formed, such that the grinding belt tapers a gap for the passage of the workpiece in the feed direction of the workpiece. It has been found to be sufficient if the processing unit or the grinding belt to the plane on which the workpiece is performed, is inclined relative to the vertical by 0.5 to 5 degrees, preferably 2 degrees. On the one hand, this allows a simple insertion of the workpiece to be machined, on the other hand, the inclination of the machining unit is not so great that the sanding belt is noticeably worn unevenly.
- the belt of the drive unit is a triple V-belt. This has changed regarding the Durability of the V-belt, the transmission of the drive power on the sanding belt and in terms of the support of the sanding belt proved to be particularly suitable.
- a design of the belt made of polyurethane or a design of the cover layer of the belt made of polyurethane has been found to be particularly suitable.
- the rollers that support the belt can be adapted to the V-belt and be designed for example as a single role, double roles or triple roles.
- two processing units can further be provided between which the workpiece is obliquely or transversely to the direction of rotation of the grinding belts feasible such that the grinding belt of each processing unit processed one of the two main surfaces of the workpiece.
- the workpiece can thus be processed in a machining operation.
- At least two processing units are provided, which are arranged successively with respect to the direction of feed of a workpiece to be machined for the processing of a main surface. This allows, for example, different abrasive materials to act sequentially on a major surface. It is conceivable to pre-sharpen with a first processing unit and bring about a corresponding fine grinding with a second.
- four or more processing units can furthermore be provided, with two processing units or their abrasive belts running in opposite directions machining the workpiece on a main surface.
- each major surface is ground in two opposite directions, a particularly preferred grinding result is achieved and also the cut edges deburred in a particularly preferred manner.
- the processing units are mutually displaceable or adjustable. This makes it possible to set the machining units to the thickness of the workpiece to be machined. By a displacement of the processing units to each other, therefore, the gap for performing the workpiece is reduced.
- the device according to the invention with only one processing unit can be provided that the pad rests on the workpiece and the processing unit are mutually displaceable, so that the gap for performing the workpiece can be reduced or increased.
- each processing unit has one independent drive, preferably in the form of an electric motor. This has proven to be particularly useful.
- FIG. 1 shows a device according to the prior art.
- a workpiece 1 is placed on a conveyor belt 100 and fed to two substantially in the vertical direction rotating abrasive belts 101.
- the grinding belts 101 run counter to the feed direction of the workpiece 1.
- the grinding belts 101 are driven by a drive shaft 102 and by a deflection shaft 103 deflected and supported in the area of the workpiece 1 to be machined.
- the inventive device is in the FIGS. 2 to 9 shown.
- FIG. 2 shows the device according to the invention for processing a strip-shaped or plate-shaped metal workpiece 1, wherein the device according to the invention is particularly suitable for deburring of cutting edges 1a and for grinding the surfaces 1b of the workpiece 1.
- the device according to the invention shown in the embodiment has two processing units 2. In the FIGS. 5 to 8 one of the processing units 2 is shown in detail.
- the processing units 2 each have a peripheral drive device 3, each of which is designed as a grinding belt 4 processing element obliquely or transversely to the feed direction of the workpiece 1 (see arrow direction FIG. 2 ) in the region of the workpiece 1 to be machined at least approximately linearly.
- the drive device 3 has a circumferential belt 5, which is designed as a triple V-belt (see FIGS. 6 and 9 ).
- the grinding belt 4 is in the region of the workpiece 1 to be machined in operative connection with the belt 5 of the Drive device 3, that the belt 5 drives the sanding belt 4.
- the grinding belt 4 extends in a processing region 6 at least approximately linear. Before and after the processing area 6, the grinding belt 4 extends in a contact area 7 at an angle to the processing area 6 and is also in operative connection with the belt 5.
- the contact areas 7 extend from the processing area 6 to a region in which the belt is in contact with a drive shaft 8 and a deflection shaft 9 comes. There, the grinding belt 4 separates from the belt 5, so that the grinding belt 4 and the belt 5 are separated from each other or separated from each other at least in a region 10 remote from the workpiece 1.
- the area 10 may be larger but also smaller than shown in the embodiment.
- the separation of the sanding belt 4 from the belt 5 does not necessarily take place in the area of the drive shaft 8 and / or the deflection shaft 9. A separation in this area, however, has proven to be particularly useful.
- the workpiece 1 to be machined is carried out or pulled through between the two machining units 2.
- a feedthrough gap 11 can be adapted.
- the processing units 2 are mutually adjustable or displaceable.
- a sheet insert 12 is used to issue the workpiece 1
- a storage table 13 is provided.
- the sheet metal insert 12 and the storage table 13 each have a conveyor belt.
- feed units 14 are provided in the area around the processing units 2 in the area around the processing units 2 in the area around the processing units 2 .
- feed units 14 are provided. These consist in each case of a plurality of conveyor rollers 15 and rollers which are mounted in parallel to the feed direction of the workpiece 1 extending side edges of the sheet metal insert 12 and the filing table 13.
- the side edges can be formed, for example, as a perforated plate. Due to the fact that the sheet metal insert 12 and the storage table 13 with a Roller system are provided, the workpiece 1 can be in a particularly simple way across the processing units 2 push through the device.
- a roller system is robust and not susceptible to damage by tilting of the workpiece 1.
- the feed units 14 also each have a feed roller 16.
- the feed roller 16 is in the embodiment of a metallic body, which is provided with a rubber coating. By the feed rollers 16 a uniform and reliable transport of the workpiece 1 is ensured transversely to the directions of rotation of the grinding belts 4.
- each drive device 3 has an independent electric motor 17, which drives the belt 5 and thus also the grinding belt 6.
- the rollers 18 may each be designed as double or triple roles.
- an end stop 20 is provided (see in particular FIG. 7 ) which limits the movement of the rollers 18 in the direction of the workpiece 1.
- a deflection of the rollers 18 in a direction away from the workpiece 1 direction is limited or damped by the spring force of the spring elements 19.
- the abrasive belt 4 or the belt 5 can thus compensate for unevenness of the workpiece 1 in that the rollers 18 are pressed against the spring force of the spring elements 19 of the workpiece 1.
- the spring elements 19 ensure that the grinding belt 4 is reliably held in contact with the workpiece 1 and thus produces an advantageous grinding result.
- the rollers 18 are mounted on a bearing point 21 such. By the end stop 20 while the maximum deflection of the rollers 18 is limited or defined. Insofar as the rollers 18 are not moved against the spring force of the spring elements 19, they form a straight line.
- the belt 5 preferably made of polyurethane, this has a certain elasticity and is thus compliant within certain limits.
- the first roller 18a and the last roller 18b are rigid. That is, the rollers 18a, 18b arranged at the inlet or at the outlet of the machining area 6 are unsprung, which ensures that the sanding belt 4 in the machining area 6 is substantially linear or rectilinear. This is especially evident FIG. 5 and FIG. 7 ,
- the grinding belt 4 to two deflection shafts 22, which are independent of the drive shaft 8 and guide shaft 9 of the drive device 3.
- the deflection shafts 22 of the grinding belt 4 are not driven.
- the drive of the grinding belt 4 takes place exclusively by the operative connection between the belt 5 and the sanding belt 4 in the machining area 6 or in the contact areas 7.
- the sanding belt 4 is stretched over a quick-release device 23, which has an eccentric, not shown.
- Such quick-release devices 23 are well known from the general state of the art, which is why will not be discussed in more detail below.
- the processing units 2 are inclined.
- the processing units 2 are each 2 degrees in relation to one to a working plane (formed by the sheet insert 12 and the storage table 13) inclined vertical position.
- the feedthrough gap 11 thus tapers in the feed direction of the workpiece 1 (see FIG. 4 ).
- the belt 5 at the the workpiece 1 to be introduced facing the longitudinal side, that is in the inlet region 24 on or bevelled.
- the chamfer 5a of the belt 5 also allows easy insertion of the workpiece 1 for changing the belt 5, which will be the case relatively rarely in practice, a belt tensioning device 25 is provided by which the drive shaft 8 and the guide shaft 9 can be shifted from each other, so that the belt 5 can be easily replaced.
- the surface of the abrasive belt 4, which is provided for machining the workpiece 1, may have any structure.
- the grain or, in general, the design of the surface can be adapted to the desired grinding result. It is essential that it is possible through the surface of the grinding belt 4 to deburr edges and / or to grind the surface of the workpiece 1.
- the solution according to the invention can be produced with different processing lengths or widths for the import of workpieces 1.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Bearbeiten eines band- oder plattenförmigen metallischen Werkstücks, insbesondere zum Entgraten von Schnittkanten und/oder zum Abschleifen von Oberflächen des Werkstücks.The invention relates to a device for processing a strip-shaped or plate-shaped metal workpiece, in particular for deburring cutting edges and / or for grinding surfaces of the workpiece.
Ein Beispiel einer hierzu geigneten Vorrichtung, nach dem Oberbegriff des Anspruchs 1, ist aus der
Eine gattungsgemäße Vorrichtung zum Bearbeiten eines band-oder plattenförmigen metallischen Werkstücks ist aus der
Beim Laserschneiden insbesondere auch beim Plasmaschneiden von metallischen Werkstücken bilden sich an den Schnittkanten Grate, welche vor der Weiterbearbeitung des Werkstücks, beispielsweise bevor dieses lackiert wird, entfernt werden müssen.In laser cutting, in particular also in the plasma cutting of metallic workpieces, burrs are formed at the cutting edges, which must be removed before further processing of the workpiece, for example before it is painted.
Darüber hinaus weisen plattenförmige metallische Werkstücke häufig an ihren Oberflächen bzw. Hauptflächen Verfärbungen, Rückstände oder dergleichen auf, welche vor einer Weiterverarbeitung bzw. Veredelung entfernt werden müssen. Somit soll vermieden werden das beispielsweise eine aufzubringende Lackierung oder Verzinkung relativ schnell wieder abspringt. Aus diesem Grund werden die Oberflächen der metallischen Werkstücke vor dem Lackieren oder Verzinken abgeschliffen.In addition, plate-shaped metallic workpieces often on their surfaces or main surfaces discoloration, residue or the like, which must be removed before further processing or finishing. Thus, it should be avoided that, for example, a paint or galvanizing applied jumps off relatively quickly. For this reason, the surfaces of the metallic workpieces are ground off before painting or galvanizing.
Aus dem allgemeinen Stand der Technik sind Vorrichtungen zum Entgraten und Feinschleifen bekannt. Hierbei werden sowohl Walzen als auch tellerförmige, rotierende Bürstenwerkzeuge eingesetzt. Bei den bekannten Vorrichtungen wird das zu bearbeitende Werkstück auf einer horizontalen Arbeitsebene oder einem Förderband aufgelegt und unter der Walze oder dem rotierenden Bürstenwerkzeug von Hand oder automatisch durchgeführt. Von Nachteil ist dabei, dass die Werkstücke in der Regel immer an derselben Stelle eingeschoben werden, so dass eine ungleiche Abnützung der Walze oder der Bürstenwerkzeuge erfolgt. Derartige Maschinen können beispielsweise eine Arbeitsbreite von 1 bis 2 m aufweisen, werden jedoch in der Praxis zumeist mit kleineren Metallzuschnitten bestückt. Dies hat zur Folge, dass eine Walze mit beispielsweise 2 m Länge lediglich auf den ersten 50 cm ihrer Länge von Metallzuschnitten beansprucht wird und sich somit nur in diesem Bereich abnützt. Die Walze muss, sobald dieser Bereich zu weit abgenutzt ist, ausgetauscht werden, obwohl drei Viertel der Walzenfläche noch gut erhalten und brauchbar ist. Ein Austausch ist schon deshalb nicht zu vermeiden, da beim Einbringen eines großen Werkstückes nunmehr die ersten 50 cm der Walze nicht mehr schleifen. Durch die ungleiche Abnützung der Walze und dem daraus resultierenden unterschiedlichen Druck auf das Werkstück ergeben sich minderwertige Schleifergebnisse.Devices for deburring and fine grinding are known from the general state of the art. Here are both Rollers used as well as plate-shaped, rotating brush tools. In the known devices, the workpiece to be machined is placed on a horizontal working plane or a conveyor belt and performed under the roller or the rotary brush tool by hand or automatically. The disadvantage here is that the workpieces are usually always inserted at the same point, so that an uneven wear of the roller or the brush tools. Such machines can for example have a working width of 1 to 2 m, but in practice usually equipped with smaller metal blanks. This has the consequence that a roll with for example 2 m in length is only claimed on the first 50 cm of its length of metal blanks and thus wears only in this area. The roller must be replaced as soon as this area is worn out too much, although three quarters of the roller surface is still well preserved and usable. An exchange is therefore unavoidable, since when introducing a large workpiece now no longer grind the first 50 cm of the roller. The uneven wear of the roller and the resulting different pressure on the workpiece result in inferior grinding results.
Von Nachteil bei den bekannten Entgrat- und Schleifmaschinen ist außerdem, dass das Werkstück zweimal eingeführt werden muss, damit beide Hauptflächen des Werkstückes bearbeitet werden können. Ein weiterer Nachteil der bekannten Maschinen ist die hohe Antriebsleistung, der hohe Platzbedarf sowie die hohen Anschaffungs- und Instandhaltungskosten.A disadvantage of the known deburring and grinding machines is also that the workpiece must be inserted twice so that both main surfaces of the workpiece can be edited. Another disadvantage of the known machines is the high drive power, the high space requirement and the high acquisition and maintenance costs.
Aus dem allgemeinen Stand der Technik sind ferner -wie in
Zusätzlich dazu, dass die Abnutzung der Schleifbänder aus den bereits bezüglich der vorgenannten Schleifmaschinen genannten Gründen ungleichmäßig ist, besteht ein weiterer Nachteil darin, dass platten- oder bandförmiges Werkstück mit unebenen Oberflächen unterschiedlich stark geschliffen werden. Es kann dabei vorkommen, dass lediglich die Wölbungen geschliffen werden, während das Schleifband nicht in die Vertiefungen eindringen kann, wodurch Ablagerungen, Verunreinigungen oder dergleichen von diesen Bereichen nicht entfernt werden können. Dies führt zu Qualitätsproblemen bei der Weiterverarbeitung bzw. der Veredlung der Fläche.In addition to the fact that the wear of the abrasive belts for the reasons already mentioned with respect to the aforementioned grinding machines is uneven, there is a further disadvantage in that plate-shaped or band-shaped workpiece are ground to different degrees with uneven surfaces. It may happen that only the bulges are ground while the abrasive belt can not penetrate into the wells, so that deposits, contaminants or the like can not be removed from these areas. This leads to quality problems in the further processing or the refinement of the area.
Aus der gattungsgemäßen Schrift der
Durch die Bearbeitung des Werkstücks schräg bzw. quer zur Vorschubrichtung des Werkstücks wird eine gleichmäßige Abnützung der Bürste erreicht. Dies gilt unabhängig von den Abmessungen des zu bearbeitenden Werkstücks. Im Unterschied zum Stand der Technik ist es nicht mehr notwendig, dass die Bürste wenigstens so breit ist wie das zu bearbeitende Werkstück. Von Vorteil bei der gattungsgemäßen Schrift ist außerdem, dass die Bürste, dadurch das diese schräg bzw. quer zur Vorschubrichtung des Werkstücks auf dem Werkstück entlang fährt in jede Aussparung eindringen kann und somit die Oxidschicht an allen Schnittflächen und Kanten entfernt. Dies führt außerdem dazu, dass die Kanten entgratet und verrundet werden.By processing the workpiece obliquely or transversely to Feed direction of the workpiece uniform wear of the brush is achieved. This applies regardless of the dimensions of the workpiece to be machined. In contrast to the prior art, it is no longer necessary that the brush is at least as wide as the workpiece to be machined. Another advantage of the generic document is that the brush, thereby driving them obliquely or transversely to the feed direction of the workpiece on the workpiece along can penetrate into each recess and thus removes the oxide layer at all cut surfaces and edges. This also causes the edges to be deburred and rounded.
Die, den Oberbegriff des Anspruchs 1 offenbarende, europäische Patentanmeldung
Der vorliegenden Erfindung liegt die Aufgabe zugrunde eine schnelle, einfache und kostengünstige Vorrichtung zum Bearbeiten von band- oder plattenförmigen metallischen Werkstücken, insbesondere zum Entgraten von Kanten und zum Abschleifen der Oberflächen zu schaffen.The present invention has for its object to provide a quick, simple and inexpensive device for processing strip or plate-shaped metal workpieces, in particular for deburring edges and for grinding the surfaces.
Diese Aufgabe wird erfindungsgemäß durch Anspruch 1 gelöst.This object is achieved by
Dadurch, dass das Bearbeitungselement als Schleifband ausgebildet ist, welches durch eine umlaufende Antriebseinrichtung schräg bzw. quer zur Vorschubrichtung des Werkstücks im Bereich des zu bearbeitenden Werkstücks wenigstens annähernd linear vorbeigeführt wird, erfolgt eine Bearbeitung des Werkstücks gemäß dem in der
Das Schleifband ermöglicht eine besonders bevorzugte Bearbeitung der Oberflächen, das heißt der Hauptflächen der band- oder plattenförmigen metallischen Werkstücke, so dass diese zuverlässig von Rückständen (bspw. resultierend aus Schneidvorgängen oder dergleichen) befreit werden und somit bei der Weiterverarbeitung bzw. Veredelung der metallischen Werkstücke keine Qualitätsprobleme auftreten. Das Schleifband bearbeitet außerdem Schnittkanten und dergleichen derart, dass diese entgratet werden. Insbesondere beim Plasmaschneiden, jedoch auch beim Laserschneiden oder anderen Schneidmethoden entstehen an den Schnittkanten und Schnittflächen Grate, die es zu entfernen gilt. Durch das Schleifband kann in einem Arbeitsgang somit sowohl eine Entgratung der Schnittkanten und Schnittflächen erreicht werden als auch eine Bearbeitung der Oberflächen des Werkstücks. Dies vorzugsweise mit einem relativ schmalen und somit kostengünstigen Schleifband welches sich gleichmäßig abnützt und somit eine gleichmäßige Bearbeitung der Werkstücke sicherstellt.The abrasive belt allows a particularly preferred processing of the surfaces, that is, the main surfaces of the band or plate-shaped metal workpieces so that they are reliably freed of residues (eg. Resulting from cutting operations or the like) and thus in the further processing or finishing of the metal workpieces no quality issues occur. The abrasive belt also processes cut edges and the like to deburr them. In particular, in plasma cutting, but also in laser cutting or other cutting methods created at the cutting edges and cut surfaces burrs that must be removed. By the grinding belt thus both a deburring of the cutting edges and cut surfaces can be achieved as well as a machining of the surfaces of the workpiece in one operation. This preferably with a relatively narrow and therefore cost-effective grinding belt which wears evenly and thus ensures a uniform machining of the workpieces.
Erfindungsgemäß ist vorgesehen, dass das Schleifband im Bereich des zu bearbeitenden Werkstücks derart in Wirkverbindung mit der Antriebseinrichtung steht, dass die Antriebseinrichtung das Schleifband antreibt. Weiterhin ist vorgesehen, dass das Schleifband und die Antriebseinrichtung zumindest in einem von dem Werkstück entfernten Bereich voneinander getrennt sind.According to the invention, it is provided that the grinding belt is in operative connection with the drive device in the region of the workpiece to be machined such that the drive device drives the grinding belt. Furthermore, it is provided that the grinding belt and the drive device are separated from one another at least in a region remote from the workpiece.
Dadurch, dass das Schleifband im Bereich des zu bearbeitenden Werkstücks in Wirkverbindung mit der Antriebseinrichtung steht, erfüllt die Antriebseinrichtung mehrere Funktionen. Einerseits wird das Schleifband durch die Antriebseinrichtung angetrieben, andererseits unterstützt und führt die Antriebseinrichtung das Schleifband im Bereich des zu bearbeitenden Werkstücks. Damit das Schleifband das Werkstück bearbeiten kann ist eine gewisse Unterstützung des Schleifbands notwendig, damit dieses bei einem Kontakt mit dem Werkstück nicht ausweichen kann. Gemäß dem Stand der Technik (siehe
Erfindungsgemäß ist vorgesehen, dass das Schleifband und die Antriebseinrichtung zumindest in einem von dem Werkstück entfernten Bereich, das heißt in einem Bereich in dem das Schleifband das Werkstück nicht bearbeitet, voneinander getrennt sind. Hierdurch wird einerseits erreicht, dass das Schleifband unabhängig von der Antriebseinrichtung montiert und gespannt werden kann, andererseits können, da die Antriebseinrichtung einen umlaufenden Riemen aufweist, über den das Schleifband angetrieben wird und der im Bereich des zu bearbeitenden Werkstücks mit einer Federkraft beaufschlagt ist, unterschiedliche Dehnungen ausgeglichen werden. Bei einer Ausgestaltung der Antriebseinrichtung derart, dass diese eine Antriebswelle und eine Umlenkwelle aufweist, um die ein Riemen umläuft, hat sich in Versuchen herausgestellt, dass der Riemen an bestimmten Stellen bedingt durch den Antrieb gedehnt und an anderen Stellen gestaucht wird. Der Riemen, der bspw. aus Polyurethan hergestellt werden kann, kompensiert diese Längenänderungen. Das Schleifband weist jedoch kein derartiges Dehnungsverhalten auf. Eine Dehnung des Schleifbands würde zu einem Zerreißen des Schleifbandes führen. Durch eine Dehnungsbewegung des Riemens zu dem Schleifband würde außerdem eine hohe Wärmeentwicklung aufgrund der Reibungskräfte entstehen, die sich auf die Funktionsweise der Vorrichtung negativ auswirkt.According to the invention, it is provided that the grinding belt and the drive device are separated from one another at least in a region remote from the workpiece, that is to say in an area in which the grinding belt does not process the workpiece. In this way, on the one hand, it is achieved that the abrasive belt can be mounted and tensioned independently of the drive device, on the other hand, since the drive device has a revolving belt over which the abrasive belt is driven and which is acted upon by a spring force in the region of the workpiece to be machined Strains are compensated. In an embodiment of the drive device such that it has a drive shaft and a deflection shaft around which a belt revolves, it has been found in tests that the belt is stretched at certain points due to the drive and compressed at other points. The belt, which can be made of polyurethane, for example, compensates for this Changes in length. However, the abrasive belt has no such elongation behavior. An elongation of the abrasive belt would lead to a tearing of the abrasive belt. By a stretching movement of the belt to the sanding belt would also have a high heat development due to Frictional forces arise, which has a negative effect on the functioning of the device.
Dadurch, dass das Schleifband und die Antriebseinrichtung zumindest in einem von dem Werkstück entfernten Bereich unabhängig voneinander umlaufen, wird die zwischen dem Schleifband und der Antriebseinrichtung bzw. dem Riemen der Antriebseinrichtung entstehende Wärmeentwicklung minimiert. Der Riemen kann gestaucht und gedehnt werden, ohne dass dies einen Einfluss auf das Schleifband hat. Im Bereich des zu bearbeitenden Werkstücks ist das Dehnungsverhalten des Riemens relativ konstant, so dass es in diesem Bereich, in dem das Schleifband in Wirkverbindung mit dem Riemen steht und von diesem unterstützt und geführt wird, zu keiner nennenswerten Wärmeentwicklung aufgrund des Dehnungsverhaltens des Riemens kommt.By virtue of the fact that the grinding belt and the drive device rotate independently of one another at least in a region remote from the workpiece, the development of heat generated between the grinding belt and the drive device or the belt of the drive device is minimized. The belt can be upset and stretched without affecting the sanding belt. In the area of the workpiece to be machined, the elongation behavior of the belt is relatively constant, so that in this area, in which the grinding belt is in operative connection with the belt and supported and guided by it, no appreciable heat development due to the stretching behavior of the belt.
Es ist nicht notwendig, dass das Schleifband in allen von dem Werkstück entfernten Bereichen unabhängig bzw. kontaktlos zu der Antreibseinrichtung umläuft. Unter dem Begriff "einem von dem Werkstück entfernten Bereich" ist vielmehr auch zu verstehen, dass es sich nur um einen (oder mehrere) Teilbereich des gesamten Bereichs handelt in dem das Schleifband von dem Werkstück entfernt ist.It is not necessary for the grinding belt to rotate independently of the driving device in all areas removed from the workpiece. Rather, the term "an area remote from the workpiece" also means that it is only one (or more) portion of the entire area in which the abrasive belt is remote from the workpiece.
Von Vorteil ist es, wenn das Schleifband in einem Bearbeitungsbereich wenigstens annähernd linear verläuft. Der Bearbeitungsbereich wird dabei in der Regel dem Bereich entsprechen der für das Durchführen des zu bearbeitenden Werkstücks maximal zur Verfügung steht. Ein linearer Verlauf des Schleifbands in diesem Bereich ermöglicht eine gleichmäßige Bearbeitung.It is advantageous if the grinding belt extends in a machining area at least approximately linear. As a rule, the processing area will correspond to the area which is at its maximum available for carrying out the workpiece to be machined. A linear course of the sanding belt in this area enables uniform machining.
In einer konstruktiven Ausgestaltung der Erfindung ist dabei vorgesehen, dass das Schleifband in einem Kontaktbereich vor und/oder nach dem Bearbeitungsbereich winklig zu dem Bearbeitungsbereich verläuft und das Schleifband in dem Kontaktbereich in Wirkverbindung mit der Antriebseinrichtung bzw. einem Riemen der Antriebseinrichtung steht.In a constructive embodiment of the invention, it is provided that the grinding belt extends in an area in contact before and / or after the processing area at an angle to the processing area and the grinding belt in the contact area in operative connection with the drive device or a belt of the drive device is.
Dadurch, dass das Schleifband vor und/oder nach dem Bearbeitungsbereich winklig bzw. schräg zu dem Bearbeitungsbereich verläuft und in Wirkverbindung mit dem Riemen steht, vergrößert sich die Fläche zum Antreiben des Schleifbandes. Durch die Schräge spannt der Riemen das Schleifband, so dass dieses vorteilhaft angetrieben und geführt wird. In Versuchen hat sich dabei herausgestellt, dass der Riemen das Schleifband im Kontaktbereich, dass heißt in der Schräge besser bzw. effektiver antreibt als auf dem linearen Wegstück des Bearbeitungsbereich.Characterized in that the grinding belt before and / or after the processing area extends at an angle or obliquely to the processing area and is in operative connection with the belt, the area for driving the abrasive belt increases. Due to the slope, the belt tensions the sanding belt so that it is advantageously driven and guided. In experiments, it has been found that the belt drives the grinding belt in the contact area, ie in the slope better or more effectively than on the linear path of the processing area.
Der Bearbeitungsbereich ist vorzugsweise zwischen einer Antriebswelle und einer Umlenkwelle der Antriebseinrichtung ausgebildet.The processing area is preferably formed between a drive shaft and a deflection shaft of the drive device.
In einer Weiterbildung der Erfindung kann ferner vorgesehen sein, dass der Riemen im Bereich des zu bearbeitenden Werkstücks an der von dem Werkstück abgewandten Seite über Rollen geführt ist.In one development of the invention, it may further be provided that the belt is guided over rollers in the area of the workpiece to be machined on the side facing away from the workpiece.
Durch die Rollen über die der Riemen im Bereich des zu bearbeitenden Werkstücks, vorzugsweise über den gesamten Bearbeitungsbereich verläuft, erhält der Riemen die notwendige Abstützung um das Schleifband in Kontakt mit dem Werkstück zu halten.Through the rollers over which the belt extends in the area of the workpiece to be machined, preferably over the entire processing area, the belt receives the necessary support to keep the grinding belt in contact with the workpiece.
Durch die Federkraft mit der der Riemen im Bereich des zu bearbeitenden Werkstücks beaufschlagt ist, wird erreicht, dass der Riemen das Schleifband mit konstanter Kraft auf das Werkstück drückt. Dies führt zu einem vorteilhaften Bearbeitungsergebnis. Vorgesehen sein kann dabei, dass der Riemen durch eine Mehrzahl voneinander unabhängiger Federelemente beaufschlagt ist. Das Schleifband dringt somit bei einer leicht unebenen Oberfläche des Werkstücks auch in Vertiefungen des Werkstückes ein. Bei einer starren Unterstützung des Schleifbandes, wie dies im Stand der Technik üblich ist, schleift das Schleifband zuerst die "Erhebungen" des Werkstücks. Erst wenn die Erhebungen soweit abgeschliffen sind, dass diese das Niveau der "Vertiefungen" erreicht haben, werden auch die Vertiefungen geschliffen. Bei einer Beaufschlagung des Riemens und somit des Schleifbandes mit einer Mehrzahl voneinander unabhängiger Federelemente wird das Schleifband nach dem Überfahren einer Erhöhung in die sich anschließende Vertiefung gedrückt, so dass die Oberfläche gleichmäßig geschliffen wird.Due to the spring force applied to the belt in the region of the workpiece to be machined, it is achieved that the belt presses the abrasive belt against the workpiece with a constant force. This leads to an advantageous processing result. It can be provided that the belt by a plurality of independent Spring elements is acted upon. The abrasive belt thus penetrates in a slightly uneven surface of the workpiece in recesses of the workpiece. With a rigid support of the abrasive belt, as is common in the art, the abrasive belt first grinds the "bumps" of the workpiece. Only when the elevations have been ground to the point that they have reached the level of the "depressions", the wells are ground. Upon loading of the belt and thus of the abrasive belt with a plurality of mutually independent spring elements, the abrasive belt is pressed after passing over an increase in the subsequent depression, so that the surface is ground uniformly.
Besonders vorteilhaft ist es, wenn eine Mehrzahl von Rollen vorgesehen sind, über die der Riemen geführt wird, wobei die Rollen jeweils durch ein Federelement beaufschlagt sind. Durch diese Ausgestaltung wird einerseits eine vorteilhafte, reibungsoptimierte Führung des Riemens erreicht, andererseits führen die Rollen dazu, dass das Schleifband dem Verlauf des Werkstückes folgen kann.It is particularly advantageous if a plurality of rollers are provided, over which the belt is guided, wherein the rollers are each acted upon by a spring element. By this configuration, on the one hand, an advantageous, friction-optimized guidance of the belt is achieved, on the other hand, the rollers cause the abrasive belt can follow the course of the workpiece.
In einer Weiterbildung der Erfindung kann vorgesehen sein, dass die erste und letzte Rolle starr, das heißt ungefedert ausgebildet ist. Damit wird erreicht, dass das Schleifband im wesentlichen linear bzw. geradlinig zwischen der ersten und der letzten Rolle und somit im Bereich des zu bearbeitenden Werkstücks bzw. des Bearbeitungsbereichs verläuft. Unebenheiten im Werkstück können dabei durch die gefederten Rollen ausgeglichen werden, ohne dass dadurch der im wesentlichen lineare Verlauf des Schleifbands im Bearbeitungsbereich beeinträchtig wird.In one embodiment of the invention can be provided that the first and last role is rigid, that is unsprung formed. This ensures that the grinding belt extends substantially linearly or rectilinearly between the first and the last roller and thus in the region of the workpiece to be machined or the machining area. Unevenness in the workpiece can be compensated by the sprung rollers, without thereby affecting the substantially linear course of the grinding belt in the machining area.
In einer weiteren vorteilhaften Ausgestaltung der Erfindung umfasst der Riemen einen Grundriemen, auf welchem eine vergleichsweise weiche, insbesondere elastische, nachgiebige Schicht angeordnet ist. Damit wird es möglich, Unebenheiten, z.B. Erhöhungen auf einem Werkstück bzw. Dickentoleranzen im Bereich der Nachgiebigkeit der elastischen Schicht auszugleichen. Gegebenenfalls kann hierdurch auf zusätzliche Federelemente komplett verzichtet werden. Um einen kostengünstigen kompakten Aufbau des Riemens zu erhalten, wird im weiteren Vorgeschlagen, dass der Grundriemen mit einer vergleichsweise weichen elastischen Schicht beschichtet ist. Die Schicht sollte elastisch nachgiebig sein damit nach Deformationen, die von Unebenheiten oder Dickentoleranzen eines Werkstücks herrühren, unmittelbar nach Wegfall der Deformationskraft eine Rückkehr in den ursprünglichen Zustand stattfindet.In a further advantageous embodiment of the invention, the belt comprises a base belt on which a comparatively soft, in particular elastic, resilient layer is arranged. This makes it possible, unevenness, eg increases on a workpiece or thickness tolerances in To compensate for the area of elasticity of the elastic layer. Optionally, this can be completely dispensed with additional spring elements. In order to obtain a cost-effective compact construction of the belt, it is further proposed that the base belt is coated with a comparatively soft elastic layer. The layer should be elastically yielding so that after deformation resulting from unevenness or thickness tolerances of a workpiece takes place immediately after elimination of the deformation force returning to the original state.
Von Vorteil ist es, wenn der Riemen an der dem einzuführenden Werkstück zugewandten Längsseite zur Ausbildung eines Einlaufbereichs abgeschrägt ist.It is advantageous if the belt is bevelled on the longitudinal side facing the workpiece to be introduced in order to form an inlet region.
Ein schräger Verlauf des Riemens in diesem Bereich ermöglicht es das Werkstück in besonders einfacher Art und Weise einzuführen, ohne dass eine Beschädigung des Schleifbandes bzw. ein Reißen des Schleifbandes befürchtet werden muss. Alternativ oder ergänzend dazu kann vorgesehen sein, dass die Bearbeitungseinheit zur Ausbildung eines Einlaufbereiches schräg gestellt ist. Die Schrägstellung der Bearbeitungseinheit erfolgt, damit ein vergrößerter Einlaufbereich ausgebildet werden kann, derart dass das Schleifband einen Spalt zur Durchführung des Werkstücks in Vorschubrichtung des Werkstücks verjüngt. Dabei hat es sich als ausreichend herausgestellt, wenn die Bearbeitungseinheit bzw. das Schleifband zu der Ebene auf der das Werkstück durchgeführt wird, gegenüber der Senkrechten um 0,5 bis 5 Grad, vorzugsweise 2 Grad geneigt ist. Dies ermöglicht einerseits ein einfaches Einführen des zu bearbeitenden Werkstücks, andererseits ist die Neigung der Bearbeitungseinheit nicht so groß, dass das Schleifband spürbar ungleich abgenutzt wird.An oblique course of the belt in this area makes it possible to introduce the workpiece in a particularly simple manner, without having to fear damage to the abrasive belt or tearing of the abrasive belt. Alternatively or additionally, it can be provided that the processing unit is inclined to form an inlet region. The inclination of the processing unit is made so that an enlarged inlet region can be formed, such that the grinding belt tapers a gap for the passage of the workpiece in the feed direction of the workpiece. It has been found to be sufficient if the processing unit or the grinding belt to the plane on which the workpiece is performed, is inclined relative to the vertical by 0.5 to 5 degrees, preferably 2 degrees. On the one hand, this allows a simple insertion of the workpiece to be machined, on the other hand, the inclination of the machining unit is not so great that the sanding belt is noticeably worn unevenly.
Von Vorteil ist es, wenn der Riemen der Antriebseinheit ein dreifacher Keilriemen ist. Dies hat sich bezüglich der Haltbarkeit des Keilriemens, der Übertragung der Antriebsleistung auf das Schleifband sowie hinsichtlich der Unterstützung des Schleifbandes als besonders geeignet herausgestellt. Eine Ausbildung des Riemens aus Polyurethan bzw. eine Ausbildung der Deckschicht des Riemens aus Polyurethan hat sich als besonders geeignet herausgestellt. Die Rollen, welche den Riemen stützen, können dabei an den Keilriemen angepasst sein und beispielsweise als Einfachrolle, Doppelrollen oder Dreifachrollen ausgebildet sein.It is advantageous if the belt of the drive unit is a triple V-belt. This has changed regarding the Durability of the V-belt, the transmission of the drive power on the sanding belt and in terms of the support of the sanding belt proved to be particularly suitable. A design of the belt made of polyurethane or a design of the cover layer of the belt made of polyurethane has been found to be particularly suitable. The rollers that support the belt can be adapted to the V-belt and be designed for example as a single role, double roles or triple roles.
In einer konstruktiven Ausgestaltung der Erfindung können ferner zwei Bearbeitungseinheiten vorgesehen sein zwischen denen das Werkstück schräg bzw. quer zur Umlaufrichtung der Schleifbänder derart durchführbar ist, dass das Schleifband jeder Bearbeitungseinheit eine der beiden Hauptflächen des Werkstücks bearbeitet.In a constructive embodiment of the invention, two processing units can further be provided between which the workpiece is obliquely or transversely to the direction of rotation of the grinding belts feasible such that the grinding belt of each processing unit processed one of the two main surfaces of the workpiece.
Somit ist es möglich das Werkstück gleichzeitig an beiden Hauptflächen abzuschleifen und zu entgraten. Das Werkstück kann somit in einem Bearbeitungsgang bearbeitet werden.Thus, it is possible to simultaneously grind and deburr the workpiece on both major surfaces. The workpiece can thus be processed in a machining operation.
In einer weiteren besonders bevorzugten Ausgestaltung der Erfindung sind wenigstens zwei Bearbeitungseinheiten vorgesehen, die nacheinander in Bezug auf die Durchschubrichtung eines zu bearbeitenden Werkstücks für die Bearbeitung einer Hauptfläche angeordnet sind. Dadurch können beispielsweise unterschiedliche Schleifmaterialien sequenziell auf eine Hauptfläche einwirken. Es ist denkbar mit einer ersten Bearbeitungseinheit vorzuschleifen und mit einer zweiten einen entsprechenden Feinschliff herbeizuführen.In a further particularly preferred embodiment of the invention, at least two processing units are provided, which are arranged successively with respect to the direction of feed of a workpiece to be machined for the processing of a main surface. This allows, for example, different abrasive materials to act sequentially on a major surface. It is conceivable to pre-sharpen with a first processing unit and bring about a corresponding fine grinding with a second.
Für eine zumindest annähernd neutrale Krafteinwirkung auf ein Werkstück ist es in diesem Zusammenhang vorteilhaft, wenn die Bearbeitungseinheiten in entgegengesetzter Richtung an einer Hauptfläche vorbeigeführt werden.For an at least approximately neutral action of force on a workpiece, it is advantageous in this context if the processing units are guided in the opposite direction to a main surface.
Für den Abtransport von abgetragenen Partikeln an den Hauptflächen hat es sich jedoch herausgestellt, dass eine gleiche Umlaufrichtung Vorteile dahingehend hat, dass an nur einer Seite für einen entsprechenden Abtransport von abgetragenen Partikeln, z.B. durch eine Absaugung gesorgt werden muss.For the removal of ablated particles on the main surfaces, however, it has been found that a same direction of rotation has advantages that on only one side for a corresponding removal of ablated particles, e.g. must be taken care of by a suction.
In einer Weiterbildung der Erfindung können ferner vier oder mehr Bearbeitungseinheiten vorgesehen sein, wobei jeweils zwei gegenläufig umlaufende Bearbeitungseinheiten bzw. deren Schleifbänder das Werkstück an einer Hauptfläche bearbeiten.In a further development of the invention, four or more processing units can furthermore be provided, with two processing units or their abrasive belts running in opposite directions machining the workpiece on a main surface.
Dadurch dass jede Hauptfläche in zwei gegenläufige Richtungen geschliffen wird, wird ein besonders bevorzugtes Schleifergebnis erzielt und auch die Schnittkanten in besonders bevorzugter Weise entgratet.The fact that each major surface is ground in two opposite directions, a particularly preferred grinding result is achieved and also the cut edges deburred in a particularly preferred manner.
Auch bei vier oder mehr Bearbeitungseinheiten ist es in einer weiteren Ausgestaltung der Erfindung vorteilhaft, wenn diese in gleicher Richtung in Bezug auf eine Hauptfläche arbeiten. Damit kann, wie bereits oben ausgeführt, eine zentrale Beseitigung von abgetragenen Partikeln auf lediglich einer Seite realisiert werden.Even with four or more processing units, it is advantageous in a further embodiment of the invention, if they work in the same direction with respect to a main surface. Thus, as stated above, a central elimination of removed particles on only one side can be realized.
Von Vorteil ist es, wenn die Bearbeitungseinheiten zueinander verschiebbar bzw. verstellbar sind. Dies ermöglicht es die Bearbeitungseinheiten auf die Stärke des zu bearbeitenden Werkstücks einzustellen. Durch eine Verschiebung der Bearbeitungseinheiten zueinander wird folglich der Spalt zum Durchführen des Werkstücks verringert. In einer Ausgestaltung der erfindungsgemäßen Vorrichtung mit nur einer Bearbeitungseinheit kann vorgesehen sein, dass die Unterlage auf der das Werkstück aufliegt und die Bearbeitungseinheit zueinander verschiebbar sind, so dass der Spalt zum Durchführen des Werkstücks verringert oder vergrößert werden kann.It is advantageous if the processing units are mutually displaceable or adjustable. This makes it possible to set the machining units to the thickness of the workpiece to be machined. By a displacement of the processing units to each other, therefore, the gap for performing the workpiece is reduced. In one embodiment of the device according to the invention with only one processing unit can be provided that the pad rests on the workpiece and the processing unit are mutually displaceable, so that the gap for performing the workpiece can be reduced or increased.
Von Vorteil ist es, wenn jede Bearbeitungseinheit einen unabhängigen Antrieb, vorzugsweise in Form eines Elektromotors aufweist. Dies hat sich als besonders zweckmäßig herausgestellt.It is advantageous if each processing unit has one independent drive, preferably in the form of an electric motor. This has proven to be particularly useful.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den weiteren Unteransprüchen. Nachfolgend ist anhand der Zeichnung ein Ausführungsbeispiel der Erfindung prinzipmäßig dargestellt.Advantageous embodiments and modifications of the invention will become apparent from the other dependent claims. An exemplary embodiment of the invention is shown in principle below with reference to the drawing.
Es zeigt:
Figur 1- eine Vorrichtung gemäß dem Stand der Technik;
Figur 2- eine perspektivische Darstellung der erfindungsgemäßen Vorrichtung mit zwei Bearbeitungseinheiten;
Figur 3- eine Seitenansicht der erfindungsgemäßen Vorrichtung gemäß Pfeilrichtung III der
;Figur 2 Figur 4- eine vergrößerte Schnittdarstellung gemäß der Linie IV-
IV der Figur 3 ; Figur 5- eine Seitenansicht einer Bearbeitungseinheit der erfindungsgemäßen Vorrichtung;
Figur 6- einen Schnitt durch eine Bearbeitungseinheit der erfindungsgemäßen Vorrichtung gemäß der Linie VI-
VI der Figur 5 ; Figur 7- eine vergrößerte Darstellung der in
dargestellten Einzelheit VII;Figur 5 Figur 8- eine rückseitige Ansicht der in
dargestellten Bearbeitungseinheit; undFigur 5 Figur 9- eine vergrößerte Schnittdarstellung des Riemens der Antriebseinrichtung.
- FIG. 1
- a device according to the prior art;
- FIG. 2
- a perspective view of the device according to the invention with two processing units;
- FIG. 3
- a side view of the device according to the invention in the direction of arrow III of
FIG. 2 ; - FIG. 4
- an enlarged sectional view taken along the line IV-IV of
FIG. 3 ; - FIG. 5
- a side view of a processing unit of the device according to the invention;
- FIG. 6
- a section through a processing unit of the device according to the invention according to the line VI-VI of
FIG. 5 ; - FIG. 7
- an enlarged view of in
FIG. 5 shown detail VII; - FIG. 8
- a back view of the in
FIG. 5 illustrated processing unit; and - FIG. 9
- an enlarged sectional view of the belt of the drive device.
Die erfindungsgemäße Vorrichtung ist in den
Die Bearbeitungseinheiten 2 weisen jeweils eine umlaufende Antriebseinrichtung 3 auf, welche jeweils ein als Schleifband 4 ausgebildetes Bearbeitungselement schräg bzw. quer zur Vorschubrichtung des Werkstücks 1 (siehe Pfeilrichtung gemäß
Die Antriebseinrichtung 3 weist einen umlaufenden Riemen 5 auf, welcher als dreifacher Keilriemen ausgebildet ist (siehe
Das Schleifband 4 steht im Bereich des zu bearbeitenden Werkstücks 1 derart in Wirkverbindung mit dem Riemen 5 der Antriebseinrichtung 3, dass der Riemen 5 das Schleifband 4 antreibt. Das Schleifband 4 verläuft in einem Bearbeitungsbereich 6 wenigstens annähernd linear. Vor und nach dem Bearbeitungsbereich 6 verläuft das Schleifband 4 in einem Kontaktbereich 7 winklig zu dem Bearbeitungsbereich 6 und steht ebenfalls in Wirkverbindung mit dem Riemen 5. Die Kontaktbereiche 7 erstrecken sich dabei von dem Bearbeitungsbereich 6 bis zu einem Bereich in dem der Riemen in Kontakt mit einer Antriebswelle 8 bzw. einer Umlenkwelle 9 kommt. Dort trennt sich das Schleifband 4 von dem Riemen 5, so dass das Schleifband 4 und der Riemen 5 zumindest in einem von dem Werkstück 1 entfernten Bereich 10 voneinander getrennt sind bzw. voneinander getrennt verlaufen. Der Bereich 10 kann dabei größer aber auch kleiner sein als im Ausführungsbeispiel dargestellt. Die Trennung des Schleifbandes 4 von dem Riemen 5 muss nicht zwangsläufig im Bereich der Antriebswelle 8 und/oder der Umlenkwelle 9 erfolgen. Eine Trennung in diesem Bereich hat sich jedoch als besonders zweckmäßig herausgestellt. Wie sich aus den
Zum Auflegen des Werkstücks 1 dient ein Blecheinschub 12. Zur Ausgabe des Werkstücks 1 ist ein Ablagetisch 13 vorgesehen. Im Ausführungsbeispiel weist der Blecheinschub 12 und der Ablagetisch 13 jeweils ein Förderband auf. Im Bereich um die Bearbeitungseinheiten 2 sind, wie insbesondere aus
Im Ausführungsbeispiel weist jede Antriebseinrichtung 3 einen unabhängigen Elektromotor 17 auf, welcher den Riemen 5 und somit auch das Schleifband 6 antreibt.In the exemplary embodiment, each
Wie sich insbesondere aus den
Die Rollen 18 sind über eine Lagerstelle 21 derart gelagert. Durch den Endanschlag 20 wird dabei die maximale Auslenkung der Rollen 18 begrenzt bzw. definiert. Insofern die Rollen 18 nicht entgegen der Federkraft der Federelemente 19 bewegt werden, bilden diese eine gerade Linie.The
Bereits aufgrund des Aufbaus des Riemens 5, vorzugsweise aus Polyurethan, weist dieser eine bestimmte Elastizität auf und ist somit innerhalb gewisser Grenzen nachgiebig.Already due to the construction of the
Im Ausführungsbeispiel ist die erste Rolle 18a und die letzte Rolle 18b starr ausgebildet. Das heißt die am Einlauf bzw. am Auslauf des Bearbeitungsbereiches 6 angeordneten Rollen 18a, 18b sind ungefedert, wodurch erreicht wird, dass das Schleifband 4 im Bearbeitungsbereich 6 im wesentlichen linear bzw. geradlinig verläuft. Dies ergibt sich insbesondere aus
Wie aus den
Zur Ausbildung eines vergrößerten Einlaufbereiches 24 sind die Bearbeitungseinheiten 2 schräg gestellt. Die Bearbeitungseinheiten 2 sind hierzu im Ausführungsbeispiel jeweils um 2 Grad gegenüber einer zu einer Bearbeitungsebene (gebildet durch den Blecheinschub 12 und den Ablagetisch 13) senkrechten Lage geneigt. Der Durchführungsspalt 11 verjüngt sich somit in Vorschubrichtung des Werkstücks 1 (siehe
Im Ausführungsbeispiel (siehe
Die Oberfläche des Schleifbandes 4, die zur Bearbeitung des Werkstücks 1 vorgesehen ist, kann einen beliebigen Aufbau aufweisen. Bspw. kann die Körnung oder allgemein die Ausgestaltung der Oberfläche an das gewünschte Schleifergebnis angepasst sein. Wesentlich dabei ist, dass es durch die Oberfläche des Schleifbandes 4 möglich ist Kanten zu entgraten und/oder die Oberfläche des Werkstücks 1 zu schleifen.The surface of the
Die erfindungsgemäße Lösung kann mit unterschiedlichen Bearbeitungslängen bzw. -breiten zur Einfuhr von Werkstücken 1 hergestellt werden.The solution according to the invention can be produced with different processing lengths or widths for the import of
Claims (23)
- Device for the machining of a belt-shaped or plate-shaped metallic workpiece (1), in particular for deburring cut edges (1 a) and/or for grinding surfaces (1b) of the workpiece (1), having at least one machining unit (2), which comprises a revolving drive device (3), which directs a machining element at least approximately linearly past the region of the workpiece (1) to be machined obliquely or transversely relative to the advancing direction of the workpiece (1), and In that the machining element is in the form of a grinding belt (4), the grinding belt (4), in the region of the workpiece (1) to be machined, is in operative connection with the drive device (3) in such a way that the drive device (3) drives the grinding belt (4), and the grinding belt (4) and the drive device (3) are separate from one another at least in a region (10) remote from the workpiece (1), whereby the drive device (3) comprises a revolving belt (5), characterised in that the belt (5) Is acted upon by spring force in the region of the workpiece (1) to be machined.
- Device according to claim 1, characterised in that the grinding belt (4) and the drive device (3) run at least approximately linearly in a machining region (6).
- Device according to claim 2, characterised in that the grinding belt (4) and the drive device (3) run at an angle to the machining region (6) in a contact region (7) In front of and/or behind the machining region (6), and the grinding belt (4) Is in operative connection with the drive device (3).
- Device according to one of the preceding claims, characterised in that the belt (5), at least in the region of the workpiece (1) to be machined, is guided via rollers (18, 18a, 18b) on the side facing away from the workpiece (1).
- Device according to one of the preceding claims, characterised in that the belt (5) is acted upon by a plurality of spring elements (19) which are independent of one another.
- Device according to one of the preceding claims, characterised in that the belt (5) comprises a basic belt on which a comparatively soft, in particular elastically flexible, layer is arranged.
- Device according to claim 6, characterised in that the basic belt is coated with the comparatively soft layer.
- Device according to one of the preceding claims, characterised in that a plurality of rollers (18) are provided, which are acted upon respectively by a spring element (19).
- Device according to claim 8, characterised in that the first and the last roller (18a, 18b) are of rigid design.
- Device according to one of the preceding claims, characterised in that the belt (5) is bevelled on the longitudinal side facing the workpiece (1) to be inserted in order to form an entry region (24).
- Device according to one of claims 1 to 10, characterised in that the machining unit (2) is tilted relative to the configuration of an entry region (24).
- Device according to one of claims 1 to 11, characterised in that a quick-tensioning device (23) Is provided for tensioning the grinding belt (4).
- Device according to claim 12, characterised in that the quick-tensioning device (23) has an eccentric.
- Device according to one of the preceding claims, characterised in that the belt (5) is a triple V-belt.
- Device according to one of claims 1 to 14, characterised in that two machining units (2) are provided, between which the workpiece (1) to be machined can be passed through obliquely or transversely to the revolving direction of the grinding belts (4) in such a way that the grinding belt (4) of each machining unit (2) machines one of the two main surfaces (1b) of the workpiece (1).
- Device according to one of claims 1 to 15, characterised in that at least two machining units (2) are provided which are arranged one after the other with regard to the push-through direction of a workpiece (1) to be machined for the machining of a main surface (1b).
- Device according to claim 15 or 16, characterised in that the grinding belts of the at least two machining units (2) are directed past a main surface (1b) in opposite directions.
- Device according to claim 15 or 16, characterised in that the revolving direction of the machining units (2) is selected in such a way that the grinding belts (4) of both machining units (2) can be directed past the main surfaces (1b) of the workpiece (1) in the same direction.
- Device according to one of claims 1 to 18, characterised in that four machining units (2) are provided, whereby in each case two machining units (2), which revolve in opposite directions, machine the workpiece (1) on a main surface (1b).
- Device according to one of the preceding claims, characterised in that four machining units (2) are provided, whereby all four machining units (2) machine the workpiece (1) In the same direction with respect to the main surfaces (1b).
- Device according to one of claims 15 to 20, characterised in that the machining units (2) are displaceable or adjustable relative to one another.
- Device according to one of claims 1 to 21, characterised in that each machining unit (2) comprises an independent drive, preferably an electric motor (17).
- Device according to one of the preceding claims, characterised in that the belt (5) is made of polyurethane or has a polyurethane cover layer.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202005014430U DE202005014430U1 (en) | 2005-09-12 | 2005-09-12 | Device for machining strip or plate like metal workpieces has grinding belt which in region of workpiece is in active connection with drive device which then drives the belt |
PCT/DE2006/001608 WO2007031066A1 (en) | 2005-09-12 | 2006-09-11 | Device for the machining, by deburring or grinding, of a belt-shaped or plate-shaped metallic workpiece |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1924403A1 EP1924403A1 (en) | 2008-05-28 |
EP1924403B1 true EP1924403B1 (en) | 2009-07-15 |
EP1924403B2 EP1924403B2 (en) | 2013-01-30 |
Family
ID=35455587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06791377A Active EP1924403B2 (en) | 2005-09-12 | 2006-09-11 | Device for the machining, by deburring or grinding, of a belt-shaped or plate-shaped metallic workpiece |
Country Status (9)
Country | Link |
---|---|
US (1) | US7614935B2 (en) |
EP (1) | EP1924403B2 (en) |
JP (1) | JP5038312B2 (en) |
CN (1) | CN101262980B (en) |
BR (1) | BRPI0615796A2 (en) |
CA (1) | CA2621177A1 (en) |
DE (2) | DE202005014430U1 (en) |
DK (1) | DK1924403T4 (en) |
WO (1) | WO2007031066A1 (en) |
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JP5586854B2 (en) * | 2009-02-05 | 2014-09-10 | 株式会社万陽 | Billet double-sided grinding machine |
DE202009019024U1 (en) * | 2009-11-27 | 2015-09-21 | Lissmac Maschinenbau Gmbh | Processing station and device for processing a workpiece |
CN102189442A (en) * | 2010-03-12 | 2011-09-21 | 上海西重所重型机械成套有限公司 | Grinding and polishing method for low-plasticity metal plate straps |
CN102430814A (en) * | 2011-09-22 | 2012-05-02 | 无锡华联科技集团有限公司 | Deslagging device for batten |
CN102672624B (en) * | 2012-06-05 | 2015-02-11 | 禾睿联科技(厦门)有限公司 | Device for removing burrs |
CN103029021B (en) * | 2012-12-26 | 2016-01-20 | 东莞新能德科技有限公司 | Semi-automatic dresser |
DE102015005915A1 (en) * | 2015-05-07 | 2016-11-10 | Jakob Löwer Inh. von Schumann GmbH & Co. KG | Deburring machine for deburring metal workpieces |
US20170266775A1 (en) * | 2016-02-25 | 2017-09-21 | Manyo Co., Ltd. | Device for grinding end surfaces of billet |
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US20190126426A1 (en) * | 2017-11-01 | 2019-05-02 | Wen-Chi Chang | Pressing device for sanding machines |
CN107824337A (en) * | 2017-11-09 | 2018-03-23 | 浙江清风侠环保设备有限公司 | A kind of electric field assembles fixing means |
CN109249287B (en) * | 2018-09-07 | 2020-06-26 | 佛山市顺德区卡芬迪家具有限公司 | Furniture board grinding device convenient to material loading |
CN110919502B (en) * | 2019-12-09 | 2020-12-22 | 重庆美迪智能家居有限公司 | Polishing device for wooden door processing and using method thereof |
CN112756979B (en) * | 2020-12-15 | 2021-12-14 | 苏州市富耐佳科技有限公司 | Sheet metal's processingequipment |
CN113059461B (en) * | 2021-04-09 | 2022-03-25 | 浙江通宝弹簧有限公司 | Spring abrasive machining equipment capable of preventing spring from deviating |
CN113798982B (en) * | 2021-09-06 | 2023-06-16 | 浙江谋皮环保科技有限公司 | Steel plate side surface descaling machine |
CN113814862B (en) * | 2021-09-07 | 2023-07-14 | 广州市市政工程机械施工有限公司 | Outer frame steel pipe rust cleaning device for building site |
CN115042060B (en) * | 2022-05-26 | 2024-04-16 | 苏州锃道研磨技术有限公司 | Remove pinch roller formula abrasive band and press mill mechanism |
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-
2005
- 2005-09-12 DE DE202005014430U patent/DE202005014430U1/en not_active Expired - Lifetime
-
2006
- 2006-09-11 JP JP2008530322A patent/JP5038312B2/en not_active Expired - Fee Related
- 2006-09-11 DE DE502006004253T patent/DE502006004253D1/en active Active
- 2006-09-11 DK DK06791377.2T patent/DK1924403T4/en active
- 2006-09-11 BR BRPI0615796-3A patent/BRPI0615796A2/en not_active IP Right Cessation
- 2006-09-11 WO PCT/DE2006/001608 patent/WO2007031066A1/en active Application Filing
- 2006-09-11 CA CA002621177A patent/CA2621177A1/en not_active Abandoned
- 2006-09-11 EP EP06791377A patent/EP1924403B2/en active Active
- 2006-09-11 CN CN2006800334631A patent/CN101262980B/en not_active Expired - Fee Related
-
2008
- 2008-02-26 US US12/037,427 patent/US7614935B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
DK1924403T4 (en) | 2013-05-06 |
DE502006004253D1 (en) | 2009-08-27 |
EP1924403B2 (en) | 2013-01-30 |
DK1924403T3 (en) | 2009-10-05 |
EP1924403A1 (en) | 2008-05-28 |
WO2007031066A1 (en) | 2007-03-22 |
JP5038312B2 (en) | 2012-10-03 |
CN101262980A (en) | 2008-09-10 |
BRPI0615796A2 (en) | 2012-04-10 |
CA2621177A1 (en) | 2007-03-22 |
JP2009507664A (en) | 2009-02-26 |
US7614935B2 (en) | 2009-11-10 |
US20080207097A1 (en) | 2008-08-28 |
DE202005014430U1 (en) | 2005-11-24 |
CN101262980B (en) | 2011-03-02 |
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