EP0006404B1 - Appareil pour l'ébarbage de pièces de travail planes - Google Patents

Appareil pour l'ébarbage de pièces de travail planes Download PDF

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Publication number
EP0006404B1
EP0006404B1 EP78100267A EP78100267A EP0006404B1 EP 0006404 B1 EP0006404 B1 EP 0006404B1 EP 78100267 A EP78100267 A EP 78100267A EP 78100267 A EP78100267 A EP 78100267A EP 0006404 B1 EP0006404 B1 EP 0006404B1
Authority
EP
European Patent Office
Prior art keywords
bristles
workpiece
brush
rollers
brushes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP78100267A
Other languages
German (de)
English (en)
Other versions
EP0006404A1 (fr
Inventor
Hans Pörsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP78100267A priority Critical patent/EP0006404B1/fr
Priority to DE7878100267T priority patent/DE2861594D1/de
Priority to IT23896/79A priority patent/IT1121961B/it
Publication of EP0006404A1 publication Critical patent/EP0006404A1/fr
Application granted granted Critical
Publication of EP0006404B1 publication Critical patent/EP0006404B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B35/00—Machines or devices designed for superfinishing surfaces on work, i.e. by means of abrading blocks reciprocating with high frequency
    • 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

Definitions

  • the invention relates to a device for deburring or rounding the edges of flat workpieces, in which brushes work on the workpieces with alternating brushing directions.
  • DE-AS 10 03 624 discloses a device for the surface treatment of plates or strips by means of brushes which are moved to and fro.
  • each brush holder which is supported by cantilevered leaf springs, is connected by a coupling to an associated eccentric mass, fast rotating shaft which runs in bearings which are guided by a link which can be swung back and forth about a fixed axis.
  • the invention has for its object to provide a device of the type mentioned, with which it is possible to deburr and round flat workpieces in one machining step on all edges.
  • a device which is characterized by a clamping table for holding the flat workpiece, a brush with a flat base surface opposite the clamping table and bristles which are perpendicular to the base surface and point towards the workpiece, the bristles of which stand up on the workpiece surface Ends have a maximum lateral deflection which is less than the deflection of the bristle carrier body caused by the drive of the brush, and a drive for an eccentrically rotating movement of the brush parallel to the workpiece plane.
  • the brush carrying the bristles is not rotated about a fixed rotational axis (the bristles would describe concentric circular movements and grinding marks like the grains of a grinding wheel). Rather, the brush is moved eccentrically like an orbital sander such that each bristle describes a circular movement parallel to the workpiece surface, but each of these circular movements has its own axis of rotation (FIG. 1). As a result, each point of the surface is swept and sanded one after the other in a constantly changing direction.
  • the bristles are elastic, they follow the profile of the workpieces at the edges, thereby removing the edges or defusing them by means of continuous slight shaping.
  • the maximum possible lateral deflection of the bristles standing on the surface must be less than the deflection of the bristle carrier caused by the drive of the brush, so that the free bristle ends describe the desired circular movement on the workpiece.
  • the bristles of normal brushes are flexible and their bristle ends therefore only follow the circular movement very incompletely. It is therefore proposed to use brushes whose bristles are very stiff. This can be done by a suitable bristle material, e.g. Steel.
  • the lateral mobility of the bristle ends can advantageously be limited by the fact that the bristles are packed very densely, e.g. with a packing density of over 30%. Plastic bristles in which abrasives are stored can also be used.
  • the space between the bristles is preferably filled with a filling compound that is plastic or elastic, which is subject to greater abrasion than the bristles themselves.
  • a filling compound that is plastic or elastic, which is subject to greater abrasion than the bristles themselves.
  • the free bristle ends become a depth of one millimeter or slightly more due to the abrasion exposed, so that the free bristle ends can follow the edge profile elastically, but are limited in their lateral movement by the remaining filling compound.
  • An abrasive can advantageously be incorporated into the filling compound, so that additional abrasive material gets onto the surface to be processed when the filling compound is abraded.
  • Fig. 1 shows the trajectories 20 of the individual bristles, which arise during an eccentric movement of the brush and each represent circles about separate axes of rotation 21, are shown schematically.
  • Fig. 2 shows one Device according to the invention.
  • 3 shows a preferred embodiment for holding and transporting the workpiece.
  • 4 to 6 relate to advantageous designs of the brushes that can be used.
  • the device according to the invention consists of a clamping table 1 for holding a workpiece 2.
  • the clamping table 1 can be e.g. be designed as a magnetic clamping table or contain suction cups or mechanical holders for the workpiece.
  • a brush 3 is arranged opposite the table surface, which contains a flat base surface 4 and bristles 5 that are perpendicular to it and directed towards the workpiece.
  • the brush 3 is set in an eccentrically circular movement by a drive motor 6.
  • the eccentric circular movement is caused by the drive shaft 7 driving an eccentric 8 attached to the brush body 3.
  • the eccentric circular movement arises from infinitesimal parallel displacements of the brush, which form a closed circular path.
  • At least a second eccentric 9, which is driven by a second drive shaft 10, is advantageously arranged on the brush for guiding the brush.
  • This second drive shaft 10 is driven synchronously by the drive 6 by means of toothed rings 11 and a toothed belt 12.
  • the eccentricity of the eccentrics 8 and 9 can advantageously be adjusted in order to adapt the amplitude of the eccentric circular movement to the flexibility of the bristles of the tool.
  • the distance between the clamping table 1 and the brush 3 can be adjusted.
  • a rail 14 is used for this purpose.
  • rollers 30 (FIG. 3) can be used, which press the workpiece onto the table 33 for holding and, if a roller drive 31 is provided, transport it.
  • These rollers 30 are advantageously opposed to counter rollers 32 to form pairs of transport rollers.
  • the distance between the pairs of rollers must be smaller than the length of the workpiece, which is why the rollers 30 are advantageously selected in recesses so large that the oscillating circuit movement of the brush is not impeded by the rollers. With sufficiently small roller spacing, both long and short workpieces can be processed on the same device without retrofitting.
  • the relative movement between the bristles and the workpiece surface largely corresponds to an eccentric circular movement.
  • the workpiece shows a good deburring and edge rounding after the treatment.
  • a brush with a flat base, which is constructed according to this principle (Fig. 5), is therefore also suitable.
  • the device according to the invention takes up little space and can therefore also be used in longitudinal cycle machines and production lines in which there would be no space for three roller brushes.
  • the device can be used in conjunction with pre-grinding.
  • the cutting beads resulting from flame cutting are roughly removed with a belt grinding machine, the belt grinding machine being followed by a vibrating brush device which removes the grinding burrs formed and rounds the edges. A high working speed can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (11)

1. Machine pour ébarber ou pour arrondir les arêtes de pièces à usiner planes, dans laquelle des brosses traitent les pièces suivant des directions de brossage changeantes, caractérisée par une table (1) de travail destinée à supporter la pièce (2) plane, par une brosse (3) ayant une semelle (4) plane, qui fait face à la table (1) et de laquelle partent des soies (5) qui sont dirigées vers la pièce (2) et dont les extrémités reposant sur la surface de la pièce (2) présentent une déviation latérale maximale qui est plus faible que celle, provoquée par l'entraînement de la brosse, du corps portant les soies, et par une transmission (6) donnant à la brosse (3) un mouvement circulaire excentrique parallèlement au plan de la pièce.
2. Machine suivant la revendication 1, caractérisée en ce que la possibilité de déplacement latéral des extrémités libres des soies est limitée par une implantation compacte des soies (5).
3. Machine suivant la revendication 1 ou 2, caractérisée en ce que les soies sont en acier.
4. Machine suivant la revendication 1 ou 2, caractérisée en ce que les soies sont en matière plastique avec incorporation d'agents abrasifs.
5. Machine suivant l'une des revendications 1 à 4, caractérisée en ce que l'interstice entre les soies (40) est empli d'une masse (43) de charge plastique ou élastique.
6. Machine suivant la revendication 5, caractérisée en ce que à la masse (43) de charge est incorporé un agent abrasif.
7. Machine suivant l'une des revendications 1 à 6, caractérisée en ce que la distance entre la brosse (3) et la table (1) de travail est réglable.
8. Machine suivant l'une des revendications 1 à 7, caractérisée en ce que la pièce à usiner est maintenue sur la table (33) de travail par des rouleaux (30).
9. Machine suivant la revendication 8, caractérisée en ce que les rouleaux (30) sont disposés dans des cavités (34) de la brosse (35).
10. Machine suivant la revendication 8 ou 9, caractérisée en ce que la pièce à usiner est transportée par les rouleaux (30) et par des contre-rouleaux (32) qui se trouvent en face des rouleaux.
11. Machine suivant l'une des revendications 1 à 10, caractérisée en ce que la transmission (6) comprend plusieurs excentriques (8, 9) entraînés en synchronisme.
EP78100267A 1978-06-28 1978-06-28 Appareil pour l'ébarbage de pièces de travail planes Expired EP0006404B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP78100267A EP0006404B1 (fr) 1978-06-28 1978-06-28 Appareil pour l'ébarbage de pièces de travail planes
DE7878100267T DE2861594D1 (en) 1978-06-28 1978-06-28 Apparatus for deburring of flat workpieces
IT23896/79A IT1121961B (it) 1978-06-28 1979-06-27 Procedimento per sbavare pezzi d'opera piani

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP78100267A EP0006404B1 (fr) 1978-06-28 1978-06-28 Appareil pour l'ébarbage de pièces de travail planes

Publications (2)

Publication Number Publication Date
EP0006404A1 EP0006404A1 (fr) 1980-01-09
EP0006404B1 true EP0006404B1 (fr) 1982-02-03

Family

ID=8185900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100267A Expired EP0006404B1 (fr) 1978-06-28 1978-06-28 Appareil pour l'ébarbage de pièces de travail planes

Country Status (3)

Country Link
EP (1) EP0006404B1 (fr)
DE (1) DE2861594D1 (fr)
IT (1) IT1121961B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993023202A1 (fr) * 1992-05-14 1993-11-25 Bodilsen Hodling A/S Appareil pour poncer les bords d'un objet allonge
JP2990069B2 (ja) * 1996-06-25 1999-12-13 株式会社守屋鉄工所 バリ平滑化装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1003624B (de) * 1953-07-25 1957-02-28 Achenbach Soehne Ges Mit Besch Vorrichtung fuer die Oberflaechenbehandlung von Platten oder Baendern mittels Buersten
GB1461570A (en) * 1973-04-13 1977-01-13 Hawker Siddeley Aviation Ltd Deburring of workpieces
US4078905A (en) * 1976-12-03 1978-03-14 Mitsubishi Jukogyo Kabushiki Kaisha Edge-rounding method and apparatus therefor

Also Published As

Publication number Publication date
EP0006404A1 (fr) 1980-01-09
IT1121961B (it) 1986-04-23
IT7923896A0 (it) 1979-06-27
DE2861594D1 (en) 1982-03-11

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