US20030087593A1 - Device for processing flat workpieces - Google Patents

Device for processing flat workpieces Download PDF

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Publication number
US20030087593A1
US20030087593A1 US10/242,277 US24227702A US2003087593A1 US 20030087593 A1 US20030087593 A1 US 20030087593A1 US 24227702 A US24227702 A US 24227702A US 2003087593 A1 US2003087593 A1 US 2003087593A1
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US
United States
Prior art keywords
processing element
processing
support members
driving shaft
workpieces
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.)
Abandoned
Application number
US10/242,277
Inventor
Hendrik Van Der Sluis
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Timesavers International BV
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Timesavers International BV
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Filing date
Publication date
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Assigned to TIMESAVERS INTERNATIONAL B.V. reassignment TIMESAVERS INTERNATIONAL B.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VAN DER SLUIS, HENDRIK EDMUND
Publication of US20030087593A1 publication Critical patent/US20030087593A1/en
Abandoned legal-status Critical Current

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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
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/06—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving conveyor belts, a sequence of travelling work-tables or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/002—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
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
    • B24D13/145—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face having a brush-like working surface

Definitions

  • the present invention is related to a device for processing substantially flat workpieces, said device comprising a transport surface for transportation through the device of each of the workpieces, and a processing unit, comprising a processing element having an abrasive surface and which is moveable parallel to the transport surface in order come into contact with each of the workpieces to be processed, a driving shaft and a carrier connected thereto for supporting the processing element, the driving shaft being transversely positioned on the carrier.
  • processing is taken to mean, among others, the deburring, grinding and sanding of substantially flat workpieces.
  • Semi-finished products punched or laser-cut from plate material are deburred at the edges or polished on the surface with the aid of the device described above.
  • the device of U.S. Pat. No. 4,704,823 hereto comprises a processing disc which rotates in the horizontal plane under which a workpiece is transported.
  • a drawback of said known device is that the workpiece is processed only on the side which is located parallel to the processing disc.
  • the object of the present invention is to provide an improved device which is capable of multi-sided processing of substantially flat workpieces, including the removal of the oxide layer on the edge of the plate material as a result of laser cutting.
  • the device according to the invention is characterised in that the processing element comprises support members for supporting the abrasive surface, said support members being positioned at an angle of less than 90° with respect to the processing element.
  • the support members are at least radially directed with respect to the driving shaft of the carrier.
  • the abrasive surface has a much longer life cycle.
  • a processing element provided with radially, or at least partly radially directed support members is much less susceptible to wear.
  • the support members are preferably substantially inclined towards and/or away from the driving shaft in order to reinforce the processing effect.
  • the processing element comprises brush hairs as support members. Experimentally it has been found that brush hairs which are not at right angles with respect to the processing element have a high impact on the side of the workpiece, with a sufficient processing result as a consequence.
  • the brush hairs may be impregnated with abrasive particles or themselves be made of steel, preferably stainless-steel, in order to obtain an abrasive surface.
  • the surface of the processing element with support members not positioned at right angles can be combined with already known processing surfaces, such as a web of nonwoven synthetic fibres provided with sanding grains, which material is sold under the name Scotch-Brite, or brush hairs, impregnated met abrasive particles, positioned at right angles with respect to the transport surface.
  • processing surfaces such as a web of nonwoven synthetic fibres provided with sanding grains, which material is sold under the name Scotch-Brite, or brush hairs, impregnated met abrasive particles, positioned at right angles with respect to the transport surface.
  • the processing element further comprises brush hairs, placed between the support members at right angles to the processing element, which are preferably made of nylon. Said nylon hairs are provided to press the workpiece against the transport surface in order to prevent it from shooting away.
  • the processing element is formed by at least one flat round disc, while the carrier is capable of being rotationally driven, the multi-sided processing of a workpiece, such as described in U.S. Pat. No. 4,704,823, is assured.
  • the diameter of the disc is preferably greater than the width of the transport surface, so that each workpiece will be processed by the abrasive surface of the processing element in at least two directions, regardless of the position of the workpiece on the transport surface.
  • the processing element is preferably removably connected to the carrier in order to allow the disc to be replaced in the event of wear of the abrasive surface.
  • the invention is also related to a processing element for application in a device for processing substantially flat workpieces according to the invention.
  • FIG. 1 is a perspective, partially sectioned and schematic view of a device according to the invention
  • FIG. 2 is a detailed view of a processing unit for application in the device of FIG. 1, and
  • FIG. 3 is a schematic diagram for elucidating the effect of the invention.
  • FIG. 1 shows a device for processing flat workpieces 1 .
  • the device comprises a conveyor 2 for transporting the workpieces 1 through the device.
  • the conveyor 2 comprises a transport surface 4 on which the workpieces 1 rest during transport through the device.
  • a processing unit 3 is arranged above the conveyor 2 and consists of a rotatable disc 5 , parallel to the transport surface 4 , with an abrasive surface which contacts each of the workpieces 1 to be processed.
  • the processing unit 3 comprises a rotationally drivable carrier 6 for supporting the disc 5 in rotation.
  • the brush hairs 7 have various orientations, that is to say, inclined towards and away from the rotational axis.
  • the brush hairs 7 are preferably of stainless-steel. Experiments have shown that stainless-steel brush hairs provide the desired effect, that is to say, a high impact on the side of the workpiece with a sufficient processing result as a consequence.
  • nylon hairs 8 have been placed on the disc 5 between the brush hairs 7 and at right angles to the transport surface 4 .
  • FIG. 3 the effect of the brush hairs 7 not being placed at right angles with respect to the transport surface 4 is shown.
  • the tops of the brush hairs 7 will have an impact on the side 9 of said workpiece 1 , before being bent aside by the edge 10 of said workpiece 1 .
  • the brush hairs 7 not placed at right angles have a high impact on the side 9 of said workpiece 1 , with a removal of the oxide layer resulting from laser-cutting as a consequence.
  • abrasive surface can be placed on the support element directly, for example by impregnating the support element with abrasive particles. It is also possible to have a strip or piece of abrasive material run along each support element. Another example is brush hairs provided with a thickening at the outer end, with which they come into contact with the surface to be processed in order to achieve a wear effect.
  • the carrier 6 is rotationally driven and the processing element follows the rotational movement.
  • the processing element can also carry out a translational movement or a movement of another kind, for example a rotational movement as well as an oscillating movement.

Abstract

The invention is related to a device far processing substantially flat workpieces, said device comprising a transport surface for transporting each of the workpieces through the device, and a processing unit, comprising of a processing element having an abrasive surface and being movable parallel to the transport surface in order to come into contact with each of the workpieces to be processed, a driving shaft and a carrier connected thereto for supporting the processing element, the driving shaft being tranversally positioned with respect to the carrier and the processing element comprising support members for supporting the abrasive surface, said support members being positioned at an angle of less than 90° with respect to the processing element, by which a multi-sided processing of the workpiece is achieved.

Description

  • The present invention is related to a device for processing substantially flat workpieces, said device comprising a transport surface for transportation through the device of each of the workpieces, and a processing unit, comprising a processing element having an abrasive surface and which is moveable parallel to the transport surface in order come into contact with each of the workpieces to be processed, a driving shaft and a carrier connected thereto for supporting the processing element, the driving shaft being transversely positioned on the carrier. [0001]
  • Such a device is known from U.S. Pat. No. 4,704,823. [0002]
  • In this text, processing is taken to mean, among others, the deburring, grinding and sanding of substantially flat workpieces. Semi-finished products punched or laser-cut from plate material are deburred at the edges or polished on the surface with the aid of the device described above. The device of U.S. Pat. No. 4,704,823 hereto comprises a processing disc which rotates in the horizontal plane under which a workpiece is transported. A drawback of said known device is that the workpiece is processed only on the side which is located parallel to the processing disc. [0003]
  • Further, from U.S. Pat. No. 5,105,583 a similar device for processing flat workpieces is also known. The processing disc of the device is provided with brush hairs transversely positioned thereon. It is possible to tilt the driving shaft, so that the processing disc will be inclined at a smaller angle with respect to the transport surface. In this event, the brush hairs also stand at an angle that is less than 90° with respect to the transport surface. The effect is an non-uniform pressing force. The drawback with this arrangement is that one disc does not allow a workpiece to be processed uniformly. [0004]
  • From [0005] EP 0 924 031, a brush disc with brush hairs is known in which the brush hairs are directed tangentially in the same direction of rotation as the disc, at an angle which is less than 90° with respect to the disc. Experimentally it was found that the brush hairs quickly have the tendency to bend permanently, thus shortening the life cycle of the brush.
  • The object of the present invention is to provide an improved device which is capable of multi-sided processing of substantially flat workpieces, including the removal of the oxide layer on the edge of the plate material as a result of laser cutting. [0006]
  • The device according to the invention is characterised in that the processing element comprises support members for supporting the abrasive surface, said support members being positioned at an angle of less than 90° with respect to the processing element. By providing the abrasive surface at an inclination with respect to the processing element, it is assured that the workpiece is not only processed on the edges and on either the upper or lower side, but also on the sides, that is, the surfaces at right angles to the upper and lower side. [0007]
  • According to the invention, the support members are at least radially directed with respect to the driving shaft of the carrier. Experimentally it has been found that when the support members are not tangentially directed, that is to say in the direction of rotation, the abrasive surface has a much longer life cycle. In comparison with the tangentially directed brush hairs, as is the case in [0008] EP 0 924 031, a processing element provided with radially, or at least partly radially directed support members is much less susceptible to wear.
  • The greatest effect is achieved if the support members are substantially radially directed with respect to the driving shaft. [0009]
  • The support members are preferably substantially inclined towards and/or away from the driving shaft in order to reinforce the processing effect. [0010]
  • In a preferred embodiment, the processing element comprises brush hairs as support members. Experimentally it has been found that brush hairs which are not at right angles with respect to the processing element have a high impact on the side of the workpiece, with a sufficient processing result as a consequence. [0011]
  • In this regard, the brush hairs may be impregnated with abrasive particles or themselves be made of steel, preferably stainless-steel, in order to obtain an abrasive surface. [0012]
  • The surface of the processing element with support members not positioned at right angles can be combined with already known processing surfaces, such as a web of nonwoven synthetic fibres provided with sanding grains, which material is sold under the name Scotch-Brite, or brush hairs, impregnated met abrasive particles, positioned at right angles with respect to the transport surface. With such a processing element, a further processing of the edges and either the upper or lower surface of the workpieces can be achieved. [0013]
  • In a further embodiment of the invention, the processing element further comprises brush hairs, placed between the support members at right angles to the processing element, which are preferably made of nylon. Said nylon hairs are provided to press the workpiece against the transport surface in order to prevent it from shooting away. [0014]
  • If the processing element is formed by at least one flat round disc, while the carrier is capable of being rotationally driven, the multi-sided processing of a workpiece, such as described in U.S. Pat. No. 4,704,823, is assured. [0015]
  • The diameter of the disc is preferably greater than the width of the transport surface, so that each workpiece will be processed by the abrasive surface of the processing element in at least two directions, regardless of the position of the workpiece on the transport surface. [0016]
  • The processing element is preferably removably connected to the carrier in order to allow the disc to be replaced in the event of wear of the abrasive surface. [0017]
  • Finally, the invention is also related to a processing element for application in a device for processing substantially flat workpieces according to the invention.[0018]
  • The invention will be further described below with reference to the attached drawings, wherein: [0019]
  • FIG. 1 is a perspective, partially sectioned and schematic view of a device according to the invention, [0020]
  • FIG. 2 is a detailed view of a processing unit for application in the device of FIG. 1, and [0021]
  • FIG. 3 is a schematic diagram for elucidating the effect of the invention.[0022]
  • FIG. 1 shows a device for processing [0023] flat workpieces 1. The device comprises a conveyor 2 for transporting the workpieces 1 through the device. The conveyor 2 comprises a transport surface 4 on which the workpieces 1 rest during transport through the device. A processing unit 3 is arranged above the conveyor 2 and consists of a rotatable disc 5, parallel to the transport surface 4, with an abrasive surface which contacts each of the workpieces 1 to be processed. In addition, the processing unit 3 comprises a rotationally drivable carrier 6 for supporting the disc 5 in rotation. Instead of one large disc, it is also possible to have a number of smaller and proximately arranged discs as a processing element.
  • On the [0024] disc 5, rings of radially directed brush hairs 7 have been placed. As can be clearly seen in FIG. 2, the brush hairs 7 have various orientations, that is to say, inclined towards and away from the rotational axis. The brush hairs 7 are preferably of stainless-steel. Experiments have shown that stainless-steel brush hairs provide the desired effect, that is to say, a high impact on the side of the workpiece with a sufficient processing result as a consequence. Further, nylon hairs 8 have been placed on the disc 5 between the brush hairs 7 and at right angles to the transport surface 4.
  • In FIG. 3, the effect of the brush hairs [0025] 7 not being placed at right angles with respect to the transport surface 4 is shown. During the passage of a workpiece 1, the tops of the brush hairs 7 will have an impact on the side 9 of said workpiece 1, before being bent aside by the edge 10 of said workpiece 1. Thus, the brush hairs 7 not placed at right angles have a high impact on the side 9 of said workpiece 1, with a removal of the oxide layer resulting from laser-cutting as a consequence.
  • Instead of brush hairs [0026] 7, it is also possible to place support members of a different kind, not positioned at right angles to the disc, such that the tops thereof are not positioned at right angles to the processing disc 5, while said support members are provided with an abrasive surface. Said abrasive surface can be placed on the support element directly, for example by impregnating the support element with abrasive particles. It is also possible to have a strip or piece of abrasive material run along each support element. Another example is brush hairs provided with a thickening at the outer end, with which they come into contact with the surface to be processed in order to achieve a wear effect.
  • According to the embodiment shown, the [0027] carrier 6 is rotationally driven and the processing element follows the rotational movement. Of course the processing element can also carry out a translational movement or a movement of another kind, for example a rotational movement as well as an oscillating movement.

Claims (11)

1. A device for processing substantially flat workpieces, said device comprising a transport surface for transporting each of the workpieces through the device, and a processing unit consisting of a processing element having an abrasive surface and being moveable parallel to the transport surface in order to come into contact with each of the workpieces to be processed, a driving shaft and a carrier connected thereto for supporting the processing element, the driving shaft being transversally positioned with respect to the carrier, characterised in that the processing element comprises support members for supporting the abrasive surface, said support members being positioned at an angle of less than 90° with respect to the processing element.
2. A device according to claim 1, in which the support members are directed at least radially with respect to the driving shaft of the carrier.
3. A device according to claim 2, in which the support members are substantially radially directed with respect to the driving shaft of the carrier.
4. A device according to claim 2 or 3, in which the support members are substantially inclined towards and/or away from the driving shaft.
5. A device according to any of the claims 1-4, in which the processing element comprises brush hairs as support members.
6. A device according to claim 5, in which the brush hairs are impregnated with abrasive particles.
7. A device according to claim 5, in which the brush hairs are made of steel, preferably stainless-steel.
8. A device according to any of the claims 1-7, in which the processing element further comprises a web of nonwoven synthetic fibres, provided with sanding grains.
9. A device according to any of the claims 1-8, in which the processing element further comprises brush hairs impregnated with abrasive particles or made of nylon, positioned at right angles to the processing element.
10. A device according to any of the claims 1-9, in which the processing element is unremovably connected to the carrier.
11. A processing element for application in a device for processing substantially flat workpieces according to any of the claims 1-10.
US10/242,277 2001-09-12 2002-09-12 Device for processing flat workpieces Abandoned US20030087593A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1018937 2001-09-12
NL1018937A NL1018937C2 (en) 2001-09-12 2001-09-12 Device for machining flat workpieces.

Publications (1)

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US20030087593A1 true US20030087593A1 (en) 2003-05-08

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EP (1) EP1293292A1 (en)
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005033589A1 (en) * 2005-07-19 2007-01-25 Mtu Aero Engines Gmbh Tool for cleaning workpieces of flash, with deep hollows and fissures, has radial bristles in packets around the body circumference together with openings or gaps
US20070190916A1 (en) * 2006-02-16 2007-08-16 Muldowney Gregory P Three-dimensional network for chemical mechanical polishing
US20110300785A1 (en) * 2008-12-22 2011-12-08 Peter Wolters Gmbh Apparatus for Double-Sided, Grinding Machining of Flat Workpieces
US20150004882A1 (en) * 2013-06-28 2015-01-01 Samsung Display Co., Ltd. Apparatus for grinding a surface of substrate
DE102014106669A1 (en) * 2014-05-12 2015-11-12 Thielenhaus Technologies Gmbh Apparatus and method for mechanical post-processing of a surface of a workpiece

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105538064A (en) * 2015-12-14 2016-05-04 苏州新协力机器制造有限公司 Novel rectangular table type plane grinding device
DE102016220766B4 (en) * 2016-10-21 2018-08-23 Boeck Gmbh Tool for editing an object
DE202020107308U1 (en) 2020-12-16 2021-02-09 Arku Maschinenbau Gmbh Machine for processing sheet metal parts

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US430077A (en) * 1890-06-10 Brush
US3181193A (en) * 1962-01-16 1965-05-04 Warren H Nobles Floor cleaning brushes
USRE31745E (en) * 1980-02-04 1984-11-27 Flo-Pac Corporation Composite brush
US5938515A (en) * 1997-12-01 1999-08-17 Lake Country Manufacturing, Inc. Foam buffing pad of string-like construction

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US3258804A (en) * 1965-06-01 1966-07-05 Dura Bond Bearing Company Centerless finishing machine
CA1260717A (en) * 1984-08-29 1989-09-26 Clarence I. Steinback Abrasive surfacing machine
US5105583A (en) * 1990-08-29 1992-04-21 Hammond Machinery Inc. Workpiece deburring method and apparatus
EP0924031B1 (en) * 1997-12-17 2003-04-16 Botech AG Gesellschaft für Beratung und Oberflächentechnik Tool for working surfaces and edges
DE20102690U1 (en) * 2001-02-15 2001-05-17 Mechanik Ct Erlangen Gmbh Deburring device

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US430077A (en) * 1890-06-10 Brush
US3181193A (en) * 1962-01-16 1965-05-04 Warren H Nobles Floor cleaning brushes
USRE31745E (en) * 1980-02-04 1984-11-27 Flo-Pac Corporation Composite brush
US5938515A (en) * 1997-12-01 1999-08-17 Lake Country Manufacturing, Inc. Foam buffing pad of string-like construction

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005033589A1 (en) * 2005-07-19 2007-01-25 Mtu Aero Engines Gmbh Tool for cleaning workpieces of flash, with deep hollows and fissures, has radial bristles in packets around the body circumference together with openings or gaps
US20070190916A1 (en) * 2006-02-16 2007-08-16 Muldowney Gregory P Three-dimensional network for chemical mechanical polishing
US7604529B2 (en) 2006-02-16 2009-10-20 Rohm And Haas Electronic Materials Cmp Holdings, Inc. Three-dimensional network for chemical mechanical polishing
US20110300785A1 (en) * 2008-12-22 2011-12-08 Peter Wolters Gmbh Apparatus for Double-Sided, Grinding Machining of Flat Workpieces
US9004981B2 (en) * 2008-12-22 2015-04-14 Peter Wolters Gmbh Apparatus for double-sided, grinding machining of flat workpieces
US20150004882A1 (en) * 2013-06-28 2015-01-01 Samsung Display Co., Ltd. Apparatus for grinding a surface of substrate
DE102014106669A1 (en) * 2014-05-12 2015-11-12 Thielenhaus Technologies Gmbh Apparatus and method for mechanical post-processing of a surface of a workpiece
DE102014106669B4 (en) 2014-05-12 2023-08-24 Thielenhaus Technologies Gmbh Device and method for mechanical finishing of a surface of a workpiece

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Publication number Publication date
EP1293292A1 (en) 2003-03-19
NL1018937C2 (en) 2003-03-13

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Owner name: TIMESAVERS INTERNATIONAL B.V., NETHERLANDS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VAN DER SLUIS, HENDRIK EDMUND;REEL/FRAME:013654/0451

Effective date: 20021219

STCB Information on status: application discontinuation

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