EP3294497A1 - Processing unit for a machine for deburring a flat work piece - Google Patents
Processing unit for a machine for deburring a flat work pieceInfo
- Publication number
- EP3294497A1 EP3294497A1 EP16725359.0A EP16725359A EP3294497A1 EP 3294497 A1 EP3294497 A1 EP 3294497A1 EP 16725359 A EP16725359 A EP 16725359A EP 3294497 A1 EP3294497 A1 EP 3294497A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- abrasive
- abrasive sheets
- sheets
- processing unit
- workpiece
- 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.)
- Granted
Links
- 238000003754 machining Methods 0.000 claims description 14
- 239000004033 plastic Substances 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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
- 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
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
- B24D13/04—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising a plurality of flaps or strips arranged around the axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0072—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing
Definitions
- the invention relates to a processing unit for a machine for deburring a flat workpiece.
- the processing unit sweeps over a flat side of the workpiece to be deburred.
- baffles form on the top and / or bottom. These can be ground, for example, by means of a grinding roller.
- the workpiece is passed under the stationary mounted, relatively fast rotating grinding roller.
- CONFIRMATION COPY Cross over the feed direction of the workpiece across its surface and thereby remove the protruding burrs. Due to the flexibility of the abrasive sheets they can penetrate into the cut-out recesses. Due to the mechanical abrasion, however, the sanding sheets wear out relatively quickly.
- machining units equipped with flexible sanding sheets tend to remove the burrs and at the same time round off the sharp edges of the workpiece, while the sanding roller does not penetrate into cut-out recesses of the workpiece and / or round its edges and therefore can only remove burrs protruding from the surface.
- EP 2 792 450 A1 discloses a machine for deburring sheet metal parts with endlessly circulating drive belts on which a large number of brushes are arranged next to one another.
- the sanding stock of the brushes consists of a package of sandpaper, which are glued with their upper edges on the flat underside of a support plate. Between each two adjacent abrasive papers a support web is arranged. Abrasive papers and backing fleeces are perpendicular from the underside of the support plate to which they are glued. This has the advantage that the exposed lower edges of the abrasive papers can impinge approximately parallel to the first edge of the workpiece or at least partially penetrate into holes or recesses of the workpiece, not only to deburr these edges, but also to round.
- the object of the invention is to provide an improved processing unit for a deburring machine in which the processing unit is moved over the surface of the workpiece to be deburred, in particular the creation of a processing unit especially for the removal of light and medium burrs.
- the abrasive sheets are inclined inclined against the direction of movement on the support plate, so that they fanned in the region of their lower edge.
- the abrasive sheets are not perpendicular to the surface of the workpiece to be deburred, as hitherto usual, but have an inclined position counter to the direction of movement.
- the abrasive sheets thus form an obtuse angle with the carrier plate.
- two adjoining abrasive sheets are no longer congruent to one another, but are offset relative to one another. This results in that the lower edges of the abrasive sheets do not form a closed surface, but a stair-like contour.
- an approximately flat grinding surface forms parallel to the upper side of the workpiece to be deburred, formed from the lower bent regions of the individual abrasive sheets.
- the grinding action corresponds approximately to a grinding roller in which the direction of movement of the abrasive in the contact area is tangential or parallel to the surface of the workpiece.
- a conventional machine for deburring and rounding with machining units the abrasive sheets are arranged vertically, if necessary, relatively easily, namely by replacing the processing units against inventive processing units with obliquely arranged abrasive sheets, be converted to a machine specifically for the removal of slight burrs, which then but characterized by significantly longer life of the processing units.
- the angle subtended by the abrasive sheets and the planar underside of the backing plate is between 3 and 60 degrees measured in the region of the top edges of the abrasive sheets near the backing plate.
- a skew angle between 20 and 40 degrees, in particular by 30 degrees. It has been shown that at this angle a particularly good ratio between deburring performance on the one hand and wear resistance on the other hand results.
- the sanding sheets consist of abrasive paper or abrasive cloth coated on one side with abrasive, the rubbing side pointing in the direction of the workpiece.
- the smooth side facilitates the mutual displacement of adjacent abrasive sheets, which favors the desired fanning in the lower edges.
- the sandpaper or abrasive cloth are glued with its upper edge on the support plate.
- the support plate may have a circumferential, laterally projecting edge, which covers the upper portion of the abrasive papers or abrasive cloth a small piece. This creates a kind of pan on the underside of the support plate, which can be advantageously filled with a plastic material.
- the abrasive papers or abrasive cloths with their upper edge can then be immersed in this liquid plastic compound. After hardening of the plastic compound, the abrasive papers or abrasive cloths are embedded a little way into the plastics material.
- the high-strength connection achieved in this way between abrasive papers or abrasive cloths and carrier plate of the processing unit is the prerequisite that the precise inclination of the abrasive sheets not only achieved in a new unused processing unit, but also maintained over the entire service life.
- the flexibility of the abrasive sheets allows them to bend rearwardly in the direction of travel and form a kind of cushion that sweeps across the surface of the workpiece to be deburred.
- Figure 1 shows a machine for deburring a flat workpiece, schematically;
- Figure 2 is a single processing unit of the machine of Figure 1, in perspective;
- FIG. 3 shows the processing unit of Figure 2, in side view
- FIG. 4 shows a processing unit, in the used state, schematically.
- the processing units 4 are moved transversely to the feed direction of the workpiece 5 by the drive belts 1 a, 1 b.
- the processing units 4 stroke simultaneously over the top and the bottom of the workpiece 5 to remove burrs at the edges and at the same time to round the edges.
- FIG. 2 shows that the processing units 4 comprise a substantially flat carrier plate 6.
- the processing units 4 comprise a substantially flat carrier plate 6.
- profiles 7a, 7b are formed, in which a bent tab of the mounting bracket 3 is inserted.
- a latching tongue 8 locks with a recess of the mounting bracket 3 and thus ensures a firm play-free fit of the support plate 6 on the mounting bracket 3.
- the support plate 6 is integrally injection molded from plastic.
- a protruding circumferential edge 9 is formed.
- the abrasive sheets 10 are rectangular and consist here exemplified Adhesive made of sandpaper, which is coated on one side with an abrasive abrasive.
- a plurality of abrasive sheets 10 are arranged parallel to each other on the support plate 6 and extend transversely to the direction of movement of the processing unit 4.
- the thickness of the abrasive sheets 10 is exaggerated.
- an abrasive sheet 10 has a thickness of, for example, 1 mm.
- the individual abrasive sheets 10 are mounted obliquely against the direction of movement (see arrow) of the processing unit 4 inclined on the support plate 6. By this inclination results in a fanning of the abrasive sheets 10 in the region of their lower edges.
- the abrasive side of the abrasive sheets 10 is thereby exposed a piece.
- the area encompassed by the edge 9 is potted on the underside of the carrier plate 6 with a plastic compound 8.
- the abrasive sheets 10 are embedded with their upper edge in the plastic mass 11. In this way, the abrasive sheets 10 are extremely firmly connected to the support plate 6.
- the angle ⁇ between the abrasive sheets 10 and the support plate 6 is here, for example, approximately 35 degrees, measured in the region of the upper edge of the abrasive sheets 10.
- the abrasive sheets 10 are arranged against the direction of movement of the processing unit 4, so that the coated abrasive side of the abrasive sheets in the direction of the workpiece 5 shows.
- the grinding side of the abrasive sheets 10 thus meet at an oblique angle to the respective front - in Figure 3 right - edges of the workpiece 5 in order to deburr these or slightly rounding.
- FIG. 4 illustrates this process and shows the wear to which the abrasive sheets 10 are subject.
- the abrasion of the abrasive paper is done by grinding down the abrasive grains until the substrate is exposed. This then quickly hits the edges of the metal workpiece, whereby the adjacent sandpaper layer is partially revealed.
- the sanding sheets 10 After a certain service life, the sanding sheets 10 have bent backwards and at the same time upwards, ie away from the workpiece 5, as far as 5, so that the total height of the machining unit 4 has been considerably reduced. At the same time, the abrasive sheets 10 have fanned farther in the region of their lower edges, so that a larger part of their abrasive side is no longer covered by the respective adjacent abrasive sheet 10, but is free i o. The package of the abrasive sheets 10 thereby forms on its underside an almost flat surface which extends approximately parallel to the top of the workpiece 5. As a result, the abrasive of the abrasive sheets 10 comes into contact only substantially with the top of the workpiece 5 and only to a small extent with its vertical edges. At the same time, the effective
- the degree of bending of the abrasive sheets 10 can vary and optimize.
- the bending of the abrasive sheets 10 may be increased or, if necessary, reduced by interposing thin sheets 12 (see Fig. 4) of a flexible resilient material, such as nonwoven or felt, between the individual abrasive sheets 10.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16725359T PL3294497T3 (en) | 2015-05-08 | 2016-05-04 | Processing unit for a machine for deburring a flat work piece |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202015102354.5U DE202015102354U1 (en) | 2015-05-08 | 2015-05-08 | Machining unit for a machine for deburring a flat workpiece |
PCT/EP2016/000727 WO2016180520A1 (en) | 2015-05-08 | 2016-05-04 | Processing unit for a machine for deburring a flat work piece |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3294497A1 true EP3294497A1 (en) | 2018-03-21 |
EP3294497B1 EP3294497B1 (en) | 2022-01-05 |
Family
ID=53372544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16725359.0A Active EP3294497B1 (en) | 2015-05-08 | 2016-05-04 | Processing unit for a machine for deburring a flat work piece |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP3294497B1 (en) |
CN (1) | CN206084639U (en) |
DE (1) | DE202015102354U1 (en) |
DK (1) | DK3294497T3 (en) |
ES (1) | ES2906609T3 (en) |
PL (1) | PL3294497T3 (en) |
PT (1) | PT3294497T (en) |
WO (1) | WO2016180520A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016220766B4 (en) * | 2016-10-21 | 2018-08-23 | Boeck Gmbh | Tool for editing an object |
DE202017103217U1 (en) | 2017-05-29 | 2017-06-23 | Arku Maschinenbau Gmbh | sanding block |
CN112338643B (en) * | 2020-10-28 | 2022-06-10 | 西北工业大学 | Longitudinal and oblique polishing method for abrasive cloth flap wheel |
CN114083390B (en) * | 2021-11-26 | 2023-03-24 | 天津津航技术物理研究所 | Aspheric surface grinding device and aspheric surface processing method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07132453A (en) * | 1993-11-09 | 1995-05-23 | Seiwa Kogyo Kk | Polishing device |
DE20106234U1 (en) * | 2001-04-10 | 2001-06-21 | Mb Maschb Gmbh | Grinding device |
DE202005011640U1 (en) | 2005-07-25 | 2005-10-13 | Lissmac Maschinenbau Und Diamantwerkzeuge Gmbh | Emery cloth assembly for removal of oxide surface layer from laser cut work pieces |
JP2013039647A (en) * | 2011-08-19 | 2013-02-28 | Nitolex Honsha:Kk | Coated abrasive and abrasive medium |
ES2561029T3 (en) | 2013-04-19 | 2016-02-24 | Arku Maschinenbau Gmbh | Deburring Machine |
-
2015
- 2015-05-08 DE DE202015102354.5U patent/DE202015102354U1/en active Active
-
2016
- 2016-05-04 ES ES16725359T patent/ES2906609T3/en active Active
- 2016-05-04 EP EP16725359.0A patent/EP3294497B1/en active Active
- 2016-05-04 PT PT167253590T patent/PT3294497T/en unknown
- 2016-05-04 DK DK16725359.0T patent/DK3294497T3/en active
- 2016-05-04 PL PL16725359T patent/PL3294497T3/en unknown
- 2016-05-04 WO PCT/EP2016/000727 patent/WO2016180520A1/en active Application Filing
- 2016-05-05 CN CN201620396779.8U patent/CN206084639U/en active Active
Also Published As
Publication number | Publication date |
---|---|
PT3294497T (en) | 2022-02-24 |
DE202015102354U1 (en) | 2015-05-22 |
DK3294497T3 (en) | 2022-02-28 |
WO2016180520A1 (en) | 2016-11-17 |
PL3294497T3 (en) | 2022-03-21 |
EP3294497B1 (en) | 2022-01-05 |
ES2906609T3 (en) | 2022-04-19 |
CN206084639U (en) | 2017-04-12 |
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