[go: up one dir, main page]

EP0261658A1 - Ponceuse à parquet - Google Patents

Ponceuse à parquet Download PDF

Info

Publication number
EP0261658A1
EP0261658A1 EP87113904A EP87113904A EP0261658A1 EP 0261658 A1 EP0261658 A1 EP 0261658A1 EP 87113904 A EP87113904 A EP 87113904A EP 87113904 A EP87113904 A EP 87113904A EP 0261658 A1 EP0261658 A1 EP 0261658A1
Authority
EP
European Patent Office
Prior art keywords
grinding
parquet
roller
sanding
sanding machine
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.)
Withdrawn
Application number
EP87113904A
Other languages
German (de)
English (en)
Inventor
Leo Lustig
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0261658A1 publication Critical patent/EP0261658A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B24B7/188—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like with cylinder- or belt-type tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B24B41/047—Grinding heads for working on plane surfaces

Definitions

  • the invention relates to a parquet sanding machine for sanding the surface of a parquet floor.
  • Parquet sanding machines are intended to sand the surface of a parquet floor. After laying a parquet floor, a relatively strong sanding is regularly necessary, since the tops of the individual wooden sticks are very different in height. The subsequent fine sanding or finishing sanding, on the other hand, requires less “chipping" of the abrasive present on the parquet sanding machine on the surfaces of the individual wooden sticks. The different penetration depth of the abrasive is achieved by correspondingly different grain sizes of the abrasive. In all processing cases, however, a plan-free and score-free cut is aimed for.
  • the parquet sanding machines which have become established on the market have a single sanding roller which is surrounded by the sanding belt which brings about the sanding process and which is located in front of a steerable chassis.
  • the longitudinal axis of this roller is oriented transversely to the grinding direction.
  • the sanding direction results from the direction in which the parquet sanding machine is pushed over the parquet floor by an operator.
  • the grinding roller lies linearly on the floor. The grinding is thus carried out in the contact area between the respective outer surface area of the grinding roller and the floor surface by a so-called contact grinding.
  • a high grinding performance can be achieved by contact grinding. This is because, in relation to the peripheral surface of a grinding roller, only a very small surface is in contact with the floor to be processed. The weight of the parquet sanding machine rests on this small contact surface, whereby the contact pressure of the sanding roller against the floor surface is very high.
  • the high sanding performance that can be achieved in this way is offset by the disadvantage that, due to the relatively small contact area, sanding or sanding waves are easily generated in the parquet floor.
  • Grinding waves can also be caused by carelessness on the part of the operator, e.g. when placing the sanding roller or when the parquet sanding machine is in operation for a short time on the same place on the parquet floor.
  • a floor grinding machine in which there is an enlarged grinding surface. This is achieved by means of an endless sanding belt that lies flat on the parquet surface in a certain area during the sanding process. This grinding belt is arranged transversely to the feed direction of this machine. This enables a so-called surface grinding, in which a very good grinding pattern is achieved. With comparable machine weights, however, the contact pressure per unit area influencing the sanding performance is lower than with the parquet sanding machines mentioned at the outset, so that the sanding performance is relatively low. This disadvantage is offset by the excellent quality of the grinding pattern in the surface grinding present here. Because of the relatively low sanding performance, the sanding principle of pure surface sanding has not proven itself in connection with parquet sanding machines.
  • a parquet sanding machine with three sanding rollers is known, which are arranged in a star shape around a central vertical axis, each sanding roller being rotatable both about its longitudinal axis and about said vertical axis is rotatable.
  • To sand the parquet floor only the sanding power of the three sanding rollers rotating around their own axis is used; The slow rotation of the three sanding rollers around the centrally arranged vertical axis only serves to enable the machine to be moved in any direction across the parquet floor without great effort.
  • the angular velocity of the rotational movement about the vertical axis should be between 1/100 and 1/150 of the angular velocity of the grinding rollers.
  • Conventional grinding rollers are driven at an angular speed between about 1500 and 3000 revolutions per minute, so that in this parquet sanding machine the rotational speed is scarcely higher than around 30 revolutions per minute, ie 1/2 revolution per second.
  • the parquet sanding machine only works on the principle of contact grinding. In contrast to the above-mentioned parquet sanding machines that are usually available on the market, the contact grinding does not run in straight, but in circular paths. Due to the low rotational speed, the parquet sanding machine must be held in place until the slip ring is ground.
  • a device for sanding surfaces is also known, with which a so-called wood finish and intermediate lacquer sanding can be carried out on profiled wooden parts such as door fronts, blinds, profiles or frames.
  • the machining process "wood finish” is understood to mean such a machining process in which the through set of conventional wood grinding machines, loose fibers protruding from the surface of the workpiece to be machined. The aim of this is to ensure that stain and varnish applied subsequently to the workpiece to be machined can be uniformly absorbed by the entire workpiece.
  • the machine device has six grinding rollers arranged in a star shape, which rotate together about a central vertical axis and at the same time are rotatably driven about their respective longitudinal axis of the roller parallel to the workpiece.
  • the six grinding rollers rotate at an angular speed between two and twenty revolutions per minute around said vertical axis.
  • the speed of rotation is so low that only the principle of contact grinding and not that of surface grinding is used.
  • the rotation of the grinding rollers merely changes the direction of the grinding path created by the rolling of the grinding rollers on the workpiece surface.
  • the invention is based on the object of specifying a parquet sanding machine of the type mentioned at the outset, with which an optimal sanding of parquet floors can be achieved while avoiding the disadvantages listed above.
  • the invention thus relates to a parquet sanding machine for sanding the surface of a parquet floor with a machine frame with a plurality of castors, each rotatable about an axis parallel to the floor surface, with a grinding device on the machine frame and with a rotary drive for the grinding device, the grinding device having at least one grinding device with more has as a grinding roller and each grinding roller both rotatable about its longitudinal axis and a vertical vertical axis oriented towards the floor surface is rotatable.
  • This parquet sanding machine is characterized in that the angular velocity of the more than one sanding roller rotates around the vertical axis by more than 200 revolutions per minute.
  • the parquet sanding machine according to the invention thus works both on the principle of contact grinding and on that of surface grinding.
  • the parquet floor is therefore ground down as a result of two overlapping grinding movements of the grinding rollers.
  • One movement is achieved by the rotary movement of the grinding roller, which is known per se in parquet grinding machines, about its own axis. This movement is superimposed on a rotation of the rollers about a vertical axis oriented perpendicular to the floor surface. As a result, a kind of cross-cut is created.
  • the parquet sanding machine according to the invention does not produce straight, but circular arc-shaped sanding lines. These grinding lines are ground several times while the grinding machine is moving, so that any grinding marks that may arise are ground again immediately after they have arisen.
  • the direction of travel or sanding is arbitrary, since the sanding pattern is independent of the respective direction of travel and is therefore always the same.
  • the driving rollers and the grinding device can be adjusted relative to one another and parallel to the vertical axis, wherein the driving rollers can only be adjusted together.
  • the grinding device and thus the grinding rollers can be lowered onto the parquet floor in the direction perpendicular to the parquet floor surface.
  • the sanding rollers are thus placed on the parquet floor area-wise, which has the advantage that the linear sanding approaches which arise from the prior art when the single sanding roller is lowered cannot occur.
  • a very important development of the invention is characterized in that the driving rollers are not steerable during the contact of the more than one sanding roller with the floor surface and are in contact with the floor surface supporting contact in the parquet sanding machine.
  • the principle of surface sanding which is used for the first time in a parquet roller sanding machine, creates relatively large transverse forces which are directed parallel to the floor surface and whose effect must be eliminated. This takes place in the parquet sanding machine according to the invention in that the machine is still supported by weight on the floor surface by means of its driving rollers during the sanding process.
  • the resulting transverse forces can be absorbed transversely to the feed direction by the frictional forces that arise between the casters and the floor surface.
  • not steerable does not necessarily mean that the parquet sanding machine cannot be steered; it only has to be ensured that the possibly existing steering lock or the alignment of the castors can be fixed in position, so that the alignment of the castors cannot change due to the transverse forces arising during rotation. In the feed direction, the transverse forces are easily absorbed by the operator pushing or pulling the parquet sanding machine and thus in their own way elimination.
  • parquet sanding machine With the parquet sanding machine according to the invention, the non-steerable design or the steerability of a parquet sanding machine that can only be implemented with additional technical effort is consciously accepted and therefore consciously made use of solution features of the parquet sanding machines on the market, all of which are equipped with freely steerable castors .
  • a disadvantage that may exist in this regard is accepted, since the qualitative and quantitative grinding properties that can be achieved in the inventive parquet sanding machine by combining the surface and contact sanding more than compensate for this disadvantage.
  • the parquet sanding machine according to the invention can be pushed at a rapid walking pace over a parquet surface to be sanded, the contact sanding and surface sanding achieving a high degree of machining or sanding performance with an error-free sanding pattern.
  • the transverse forces caused by the rotation of the grinding rollers around the vertical axis can be effectively absorbed by the castors the closer the vertical axis is to the roller axis connecting two opposite castors. If the vertical axis precisely intersects a roller axis, only the two castors seated on this axis are subjected to force transversely to the feed direction. In such a case, it would be possible to design the additional castor that is additionally present on the parquet sanding machine in a freely steerable manner. Instead of this one castor, two other casters could also be present. This freely steerable design of castors is also practically possible in this case.
  • each area of the floor that is swept by the two rollers is not only ground in one direction but in two directions as a result of the opposite rotation of the two rollers.
  • the height of the at least two grinding rollers is adjustable relative to the driving rollers.
  • the grinding rollers are designed to be adjustable along a — in particular vertical — guide. Along this guide, the grinding rollers can be lowered onto the floor with different contact pressures.
  • the height adjustability can also be achieved in that the grinding rollers, together with the machine frame, can be positioned at different heights above the floor relative to the driving rollers. This is possible, for example, in that each roller is attached to the machine frame in a height-adjustable manner. The height of the machine frame can then be adjusted with the grinding rollers relative to the driving rollers and thus relative to the floor.
  • a lowering or lifting of the machine frame with the attached to it can be done with little technical effort Realize the grinding device relative to the floor surface, for example, when the machine frame with the grinding device is seated by means of at least one screw drive, in particular a ball screw drive, on a roller shaft connecting two driving rollers.
  • a screw drive is then advantageously present in the immediate vicinity of each castor.
  • the screw drives are connected to one another via an endlessly rotating toothed belt, the adjustment of the screw drives and thus the height adjustment of the machine frame and thus also the grinding rollers being effected by turning at least one of the deflection rollers guiding the toothed belt.
  • the rotation of this at least one deflection roller can be made possible in a simple and practical way by means of a Bowden cable.
  • the rotational frequency of the grinding roller about its longitudinal axis is about five to twenty-five times as large as that of the grinding roller about the vertical vertical axis.
  • the drive for the rotational movement of the grinding roller about its longitudinal axis and for the rotational movement thereof about the vertical vertical axis can be the same; the different rotational frequencies can be generated by an appropriately designed gear.
  • the grinding roller has a frequency of rotation about its longitudinal axis of about 4000 to 4500 revolutions per minute. The grinding roller rotates about the vertical vertical axis at about 500 to 1000 revolutions per minute.
  • the sanding belt moves very quickly away from the respective sanding point, so that both the sanding belt and in particular the floor surface heat up significantly less than is the case with known parquet sanding machines.
  • This enables the rotational frequency of the grinding roller to be set relatively high about its longitudinal axis. An increase in the cutting speed can then also be achieved with the increased rotational frequency.
  • the cutting speed cannot be set as high as possible, since burns on the wooden surface must be avoided.
  • the above-mentioned high roller revolutions of 4000 to 4500 revolutions per minute can be achieved with grinding rollers that are smaller in diameter than the prior art.
  • the length of such a grinding roller is, for example, only about 15 to 25 percent and the diameter thereof is only about 25 to 45 percent of the grinding circle diameter present when a grinding roller rotates.
  • the axis of rotation of the rotating shaft driven by the rotary drive device coincides with the vertical vertical axis of the grinding device, so that in this way the weight of the rotating device Drive and the existing gear can be fully available for pressing.
  • a correspondingly large parquet sanding machine can also be provided, in which several grinding devices are provided in such a way that the several grinding devices, which can be two, for example, are arranged in such a way that the respective rotating vertical axes are at a somewhat smaller distance have from each other than it corresponds to the maximum diameter of the grinding circle created during the rotation of a grinding roller.
  • the grinding circles then overlap slightly, so that the grinding surface simultaneously ground can be almost doubled in two grinding devices, for example.
  • a parquet sanding machine 10 has a housing 12 which is supported by four wheels, of which only three are shown in FIG. 1, namely the wheels 14, 16, 18. Each of these wheels 14, 16, 18 is slidably supported in the vertical direction V via a fork-like holder on a guide rod 22, 24, 26 which are fastened to the housing 12.
  • the wheel bearing prevents the wheels from pivoting about axes parallel to the vertical direction V, so that the wheels cannot be freely steered.
  • a guide rod 28 is attached to the rear area of the housing 12 and protrudes obliquely upward therefrom. In the upper area of this guide rod 28 there are two handles 30 with which the parquet sanding machine 10 can be pushed over a parquet surface 32. The parquet sanding machine 10 rolls on its wheels 14, 16, 18.
  • a motor 36 and an electrical switch box 38 are fastened on the housing 12 and can be connected to a power supply source with the aid of a cable 40.
  • the pot-like housing 12 which is open towards the bottom of the parquet surface 32, encloses two grinding rollers 44, 46.
  • the longitudinal axis 48 of the roller 44 and the longitudinal axis 50 of the roller 46 are aligned parallel to the parquet surface 32 and thus parallel to the plane through which Connection of the contact points of the wheels 14, 16, 18 with the parquet surface 32 is defined.
  • Both rollers are the same size and have a length in the transverse direction Q that is shorter than that in the transverse direction device Q is available half the width of the housing 12.
  • the left roller 44 is connected via a coupling member 52 and the right roller 46 via a coupling member 54 to a gear 55 which is provided in the center of the housing 12.
  • the gear 55 is located below the motor 36.
  • the coupling members 52, 54 and thus also the two rollers 44, 46 can be rotated clockwise 56 around a vertical axis 58.
  • the surface of the rollers 44, 46 grind over the parquet surface 32.
  • the roller 44 is brought into a rotary movement 60 about the axis 48 and the opposite other roller 46 into a rotary movement 62 about its longitudinal axis 50.
  • the rotational movement 60 is in the opposite direction to the rotational movement 62.
  • the direction of rotation of both rollers 44, 46 is such that the direction of movement of the points of the rollers 44, 46, which respectively touch the parquet surface 32, with the clockwise 56 rotational movement of the coupling links 52, 54 matches. This creates a maximum grinding effect.
  • the grinding itself takes place along a circular ring which is delimited on the one hand by the outer circle 64 and on the other hand by the inner circle 66.
  • the line 68 surrounding the circle 64 which is also a circular line, characterizes the clearance profile required by the rollers 44, 46.
  • the housing 12 which is movable on the wheels 14, 16, 18 and thus the entire parquet sanding machine 10, is rolled over the parquet surface 32.
  • the wheels 14, 16, 18 along the guide rods 22, 24, 26 in the vertical direction V in different heights relative to the housing 12 and adjust it to the rollers 44, 46.
  • the height adjustment of the housing 12 relative to the wheels 14, 16, 18 can be carried out with the aid of the drainage linkage 42.
  • FIG. 3 A special embodiment for a height-adjustable chassis is shown in FIG. 3.
  • the chassis 70 there has four wheels 72, of which the two rear wheels are connected to one another by a common axle shaft 74.
  • the two front wheels of this undercarriage 70 are mounted on the housing (not shown in more detail) of the associated parquet grinding machine via axially stub axles 76 in the vertical direction V along guides 78 adjustable in height. None of the wheels 72 can be pivoted about axes parallel to the vertical direction V.
  • each wheel 72 there is in each case a bearing block 79 on the axle shaft 74 or the axle shaft stub 76, in which a spindle 80 aligned in the vertical direction V with its longitudinal axis is screwed in at its lower end and is freely rotatable.
  • a roller 84 which is rotatable about the spindle axis 82, is fastened to the upper end of this spindle 80.
  • the spindle 80 is surrounded by a nut 86 which is fastened to the housing of this parquet sanding machine, which is not shown in detail.
  • rolling elements - such as. B. balls - installed so that the screw drive represented by the spindle 80 and the nut 86 is in the form of a ball screw.
  • the rollers 84 are driven by means of a toothed belt 87 which runs endlessly around the deflection rollers 84.
  • the toothed belt runs around two additional deflection rollers 88, 90.
  • the lower end of a Bowden cable 92 is attached off-center to one deflection roller 88.
  • the other end of this Bowden cable 92 is fastened in a manner not shown in the region of the handles 30 (FIG. 1).
  • the wheels on which the parquet sanding machine rests can also be pivotally attached to the housing about a vertical axis, so that the parquet sanding machine can be moved along the parquet surface 32 in any direction.
  • the swiveling must not be freely movable so that the horizontal transverse forces that occur during sanding can be absorbed by the wheels on the parquet surface. With this suspension, too, a height adjustment of the housing can then be ensured; 1, for example, in that the axes 48, 50 of the two rollers 44, 46 are designed to be adjustable in height.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP87113904A 1986-09-24 1987-09-23 Ponceuse à parquet Withdrawn EP0261658A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3632388 1986-09-24
DE3632388 1986-09-24
DE19873717745 DE3717745A1 (de) 1986-09-24 1987-05-26 Parkettschleifmaschine
DE3717745 1987-05-26

Publications (1)

Publication Number Publication Date
EP0261658A1 true EP0261658A1 (fr) 1988-03-30

Family

ID=25847783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87113904A Withdrawn EP0261658A1 (fr) 1986-09-24 1987-09-23 Ponceuse à parquet

Country Status (2)

Country Link
EP (1) EP0261658A1 (fr)
DE (2) DE3717745A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232367A (en) * 1989-06-08 1990-12-12 London General Sales Ltd Surface preparation machine
EP0498411A1 (fr) * 1991-02-08 1992-08-12 Olga Bellati Ponceuse à parquets
KR100659508B1 (ko) 2006-03-13 2006-12-20 (주)한보월드 연마기
US7438633B2 (en) 2005-01-21 2008-10-21 Flex Trim A/S Apparatus for grinding a surface comprising two movably arranged hoods

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4037510A1 (de) * 1990-11-26 1992-05-27 Leo Lustig Parkettrandschleifmaschine
DE4322283B4 (de) * 1993-07-05 2005-08-11 Festo Ag & Co. Werkzeug für eine Werkzeugmaschine zum Abtragen von Material von einer Werkstück-Oberfläche
DE102006010884B4 (de) * 2005-12-03 2008-11-06 Leo Lustig Parkettschleifmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155596A (en) * 1978-03-20 1979-05-22 R/B Manufacturing, Inc. Terrazzo floor surfacing machine
FR2505235A1 (fr) * 1981-05-11 1982-11-12 Lebbo Graziella Machine a lisser, en particulier pour parquets en bois
FR2545747A1 (fr) * 1983-05-11 1984-11-16 Hansen & Hundebol

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155596A (en) * 1978-03-20 1979-05-22 R/B Manufacturing, Inc. Terrazzo floor surfacing machine
FR2505235A1 (fr) * 1981-05-11 1982-11-12 Lebbo Graziella Machine a lisser, en particulier pour parquets en bois
FR2545747A1 (fr) * 1983-05-11 1984-11-16 Hansen & Hundebol

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232367A (en) * 1989-06-08 1990-12-12 London General Sales Ltd Surface preparation machine
EP0498411A1 (fr) * 1991-02-08 1992-08-12 Olga Bellati Ponceuse à parquets
US5287660A (en) * 1991-02-08 1994-02-22 Olga Bellati Planing machine for wood floors
US7438633B2 (en) 2005-01-21 2008-10-21 Flex Trim A/S Apparatus for grinding a surface comprising two movably arranged hoods
KR100659508B1 (ko) 2006-03-13 2006-12-20 (주)한보월드 연마기

Also Published As

Publication number Publication date
DE8717836U1 (de) 1990-07-05
DE3717745A1 (de) 1988-03-31

Similar Documents

Publication Publication Date Title
DE4493442B4 (de) Durchlauf-Schleifmaschine, insbesondere ausgebildet zum Schleifen von Holz und Zwischenschleifen von Lack an Abdeckplatten usw., bei denen es sich hauptsächlich um ebene Werkstücke handelt
DE2311011C3 (de) Kopierschleifmaschine zum Schleifen von Werkstücken aus Holz
EP1990133B1 (fr) Agrégat de ponçage comme outil pour un dispositif de traitement
DE8412179U1 (de) Rotationswerkzeug nach art eines schneidkopfes oder fraeskopfes
EP1175961A2 (fr) Procédé et dispositif pour usiner les surfaces de pièces
DE102010019203A1 (de) Doppelseitenschleifmaschine
DE69103209T2 (de) Verfahren und Bearbeitungsvorrichtung, insbesondere zur Verwendung beim Schleifen von Holzwerkstücken auf einer Schleifmaschine.
DE102011051962B4 (de) Anordnung zur Aufnahme eines Schleifkopfes
DE69111453T2 (de) Vorrichtung zum schleifen, polieren usw. von werkstücken.
DE3416629C3 (fr)
DE69501670T2 (de) Maschine zum Behandeln von Skisohlen, insbesondere durch Schleifen
EP0261658A1 (fr) Ponceuse à parquet
EP1314513A2 (fr) Procédé pour l'ébavurage de plaques de verre
DE2614843C2 (de) Kopierschleifmaschine
DE2723231B2 (de) Maschine zum Abrunden mit einem vorbestimmten Radius der Ecken von Glasplatten
DE2446904A1 (de) Maschine zum markieren von werkstuecken
DE3876857T2 (de) Vorrichtung zum automatischen schleifen der abgerundeten ecken von platten.
DE4235240C2 (de) Verfahren zur Herstellung und Bearbeitung paralleler Gehrungen an den beiden Stirnflächen langgestreckter Hölzer und Doppelendprofiler zur Durchführung dieses Verfahrens
DE4326890A1 (de) Vorrichtung zum Schleifen der Kanten von platten- oder tafelförmigen Werkstücken
DE3048253A1 (de) Geraet zum schaerfen der laufflaechenkanten von skiern
DE3535636A1 (de) Transportables schleifgeraet
DE3012996A1 (de) Rollenanordnung in radsatzreprofkilierungsmaschine
EP0083672B1 (fr) Meule et procédé pour le dressage de celle-ci
EP0060501B1 (fr) Machine de travail de pièces en arc
DE544765C (de) Verfahren zum Glaetten der Kaliber an den Walzen fuer Pilgerschrittwalzwerke

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19881003