EP3880403B1 - Polissoir et dispositif pour polir une pièce - Google Patents

Polissoir et dispositif pour polir une pièce Download PDF

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Publication number
EP3880403B1
EP3880403B1 EP20701034.9A EP20701034A EP3880403B1 EP 3880403 B1 EP3880403 B1 EP 3880403B1 EP 20701034 A EP20701034 A EP 20701034A EP 3880403 B1 EP3880403 B1 EP 3880403B1
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EP
European Patent Office
Prior art keywords
polishing
ball
holder
polishing tool
receptacle
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.)
Active
Application number
EP20701034.9A
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German (de)
English (en)
Other versions
EP3880403C0 (fr
EP3880403A1 (fr
Inventor
Nadine Geist
Andreas Fedoseew
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.)
Schneider GmbH and Co KG
Original Assignee
Schneider GmbH and Co KG
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 Schneider GmbH and Co KG filed Critical Schneider GmbH and Co KG
Publication of EP3880403A1 publication Critical patent/EP3880403A1/fr
Application granted granted Critical
Publication of EP3880403C0 publication Critical patent/EP3880403C0/fr
Publication of EP3880403B1 publication Critical patent/EP3880403B1/fr
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Anticipated expiration legal-status Critical

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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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/01—Specific tools, e.g. bowl-like; Production, dressing or fastening of these 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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/02—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
    • B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material

Definitions

  • the present invention relates to a polishing tool and a device with a polishing tool.
  • a generic polishing tool is from DE 10 2016 006 741 A1 and the CN 106 863 062 A known.
  • the generic polishing tool has a curved head, which carries a flexible or elastic polishing element to form a curved or arched polishing surface.
  • Such a polishing tool is used in particular for zonal polishing of optical workpieces.
  • the polishing surface of the polishing tool is only partially applied to the workpiece to be polished in the area of a contact surface.
  • This contact surface is significantly smaller in comparison to the surface of the workpiece to be polished, in particular compared to the radial extent of the workpiece.
  • a different polishing tool is preferably selected depending on the surface to be polished, in particular the (curvature) radius of the workpiece. It is namely preferred, particularly in the case of zonal polishing, that the (curvature) radius of the workpiece is greater than the (curvature) radius of the polishing surface of the polishing tool, preferably by a factor of at least two.
  • zonal polishing also allows polishing of aspheric and/or freely formed surfaces of workpieces and is preferably used for precision optics, for example for mirrors or lenses, or to correct manufacturing errors.
  • the curved head of the generic polishing tool is usually made by turning.
  • the curved polishing surface of the polishing tool In order to achieve the desired precision in zonal polishing, it is necessary for the curved polishing surface of the polishing tool to have a defined, exact dimension/shape or a geometry with very small geometric deviations.
  • polishing tool deforms deterministically and repeatably when pressed against the workpiece in order to achieve an optimal polishing result.
  • the object of the present invention is therefore to improve a generic polishing tool or to further develop it in such a way that its production is simplified, in particular while maintaining the exact dimensions or geometry of the curved head.
  • the solution to this problem consists in a polishing tool with the features of claim 1 and in a device with such a polishing tool according to claim 11.
  • a holder which is suitable for being connected to a tool spindle—in particular with a positive and/or non-positive fit.
  • the holder preferably has an in particular concave, particularly preferably spherical, receptacle in which a preferably elastically or elastically deformable ball—in particular with defined dimensions and defined (Shore) hardness—is accommodated.
  • the free surface of the ball or the surface facing away from the holder is provided with a polishing film, preferably directly.
  • the polishing tool according to the invention is very easy to manufacture.
  • the dimensioning or geometry of the sphere can be implemented extremely precisely and reproducibly, so that the end result is a high-precision polishing tool, in particular for the zonal polishing of optical workpieces.
  • a dressing, in particular a correction of the geometric shape, of the polishing tool according to the invention is not required during use.
  • the size and properties of the polishing tool according to the invention can easily be adapted to the requirements of the workpiece to be polished.
  • a ball with the (Shore) hardness required in the individual case can be selected as often as desired and accommodated in the holder, or a suitable polishing film with the polishing properties desired in the individual case can be selected and attached to the free surface of the ball.
  • the holder can, for example, be made of a plastic, in particular (injection) molded.
  • a suitable plastic is in particular rigid PVC (PVC-U).
  • the ball is preferably elastically or elastically deformable and/or can be made of a rubber material, for example, which has a defined (Shore) hardness, for example in the range from SH 50 to SH 65.
  • the polishing film is preferably provided or cut to size in the form of a sphere and attached, in particular glued, to the free surface of the sphere without tension and/or without any creases.
  • the sphere development can be cut out of a flat polishing film and attached to the free surface of the sphere.
  • a suitable material for the polishing film is, for example, polyurethane LP-13 with a thickness of 0.5 mm.
  • the polishing tool according to the invention in particular due to the deterministic, uniform elastic properties, enables uniform removal and thus an optimal polishing result even over a longer period of time or after several polishing processes.
  • the polishing tool 10 according to the invention is based on the exemplary embodiment according to FIG Figures 1a and 1b together from a holder 11, a ball 12 and a polishing film 13, preferably in the form of a spherical winding.
  • polishing tool 10 according to the invention can also have other components or components.
  • the holder 11 is preferably designed to hold the ball 12 positively, non-positively and/or materially, in particular immovably, and/or to connect it to a tool spindle (not shown).
  • the polishing tool 10, in particular the holder 11, is preferably at least essentially cylindrical and/or designed as a (circular) cylinder.
  • the polishing tool 10 or the holder 11 is particularly preferably designed to be at least essentially rotationally symmetrical.
  • Polishing tool 10 preferably has a tool axis A1, in particular tool axis A1 forming a longitudinal, symmetrical, central and/or rotational axis of preferably elongate and/or rotationally symmetrical polishing tool 10 and/or of preferably elongate and/or rotationally symmetrical holder 11 .
  • the holder 11 has an adapter area 11a for connection to or accommodation in a tool spindle (not shown) and a recess or accommodation 11b in particular for the ball 12 .
  • the adapter area 11a preferably forms a first or workpiece-remote (axial) end and the receptacle 11b a second or workpiece-close (axial) end of the holder 11.
  • the adapter area 11a and the receptacle 11b are arranged on opposite sides or ends of the holder 11 .
  • the adapter area 11a is preferably cylindrical and/or formed by a (circular) cylinder.
  • the adapter region 11a preferably has a constant diameter--in particular along the tool axis A1--in particular of at least essentially 25 mm.
  • the length or axial extension of the adapter area 11a is preferably at least essentially 42 mm.
  • the adapter area 11a can preferably be clamped in a tool chuck of a tool spindle.
  • the holder 11 is preferably formed in one piece. However, it is also possible for the holder 11 to be designed in several parts or to be composed of several components.
  • the holder 11 is (injection) molded in a manner known per se from a suitable plastic, for example hard PVC (PVC-U).
  • a suitable plastic for example hard PVC (PVC-U).
  • the receptacle 11b is preferably designed to receive the ball 12 .
  • the receptacle 11b is designed to hold the ball 12 in a form-fitting, force-fitting and/or material-fitting manner.
  • the receptacle 11b is preferably concave, in particular spherical, very particularly preferably at least essentially hemispherical.
  • the receptacle 11b is designed as a spherical segment or spherical shell.
  • the recess or receptacle 11b is dimensioned such that it can accommodate a ball 12 preferably without play, as will be explained in more detail below.
  • the ball 12 is made of solid rubber and has a Shore hardness of SH 50 to SH 65.
  • the ball 12 can, for example, be glued in the recess 11b.
  • solutions are also possible in which the ball 12 is additionally or alternatively held in the receptacle 11b with a positive and/or non-positive fit, as will be explained in more detail below.
  • the ball 12 can therefore be divided into two parts or segments, as in Fig. 1a indicated by a dashed line.
  • the ball 12 has a first or free ball segment and a second or covered or held ball segment, the first or free ball segment of the ball 12 protruding from the holder 11, in particular the receptacle 11b, and the second or covered or held ball segment in the holder 11, in particular the receptacle 11b, embedded or held by this.
  • the sphere 12 is at least essentially divided into two hemispheres and/or the first or free sphere segment and the second or covered sphere segment are each designed as a hemisphere. In this way, on the one hand, a good connection between the ball 12 and the holder 11 is made possible and, on the other hand, a sufficient area of the ball 12 for polishing or fastening the polishing film 13 is provided.
  • the ball 12, in particular the first ball segment, preferably has a first or free surface or working surface 12a, preferably with the free surface or working surface 12a facing away from the holder 11, in particular the receptacle 11b.
  • the ball 12, in particular the second ball segment, preferably has a second or covered surface or holding surface 12b, preferably with the holding surface 12b facing the holder 11, in particular the receptacle 11b.
  • the second ball segment or the holding surface 12b is (exclusively) connected to the holder 11, in particular the receptacle 11b, in a form-fitting, non-positive and/or material-to-material manner, in particular by gluing.
  • the polishing tool 10 preferably has the polishing foil 13 and/or a polishing surface 13a, preferably with the polishing foil 13 or the polishing surface 13a forming a (first) axial or free end of the polishing tool 10 or the ball 12 at least partially, in particular on one the side facing away from the holder 11, is covered and/or is in direct contact with the workpiece when polishing a workpiece (not shown).
  • the free surface 12a of the sphere 12 or the first sphere segment is preferably provided or coated with the polishing film 13 directly or without an intermediate element.
  • the first ball segment or the free surface or working surface 12a of the ball 12 is particularly preferably completely or partially covered with the polishing film 13 .
  • the polishing film 13 is preferably at a distance from the edge of the holder 11 or the receptacle 11b. It is therefore preferred that the polishing film 13 does not completely cover the first ball segment or the free surface 12a of the ball 12 or does not extend (exactly) to the edge of the holder 11 or the receptacle 11b. This prevents creases from forming, for example as a result of a deformation of the ball 12 during polishing, which could impair the polishing result.
  • the polishing film 13, in particular the polishing surface 13a is preferably (convexly) curved, in particular spherical.
  • the curvature of the polishing film 13, in particular the polishing surface 13a particularly preferably corresponds at least essentially to the curvature of the sphere 12, in particular the free surface 12a.
  • the polishing film 13 is consequently preferably adapted to the sphere 12 or the curvature of the sphere 12 .
  • polishing film 13 rests on the ball 12, in particular the free surface or working surface 12a, without tension and/or without creases and/or flat.
  • stress-free in the sense of the present invention should preferably be understood to mean that no (local) material deformations or stresses in the material of the polishing film 13 and/or the ball 12 occur as a result of the polishing film 13 in particular being adapted to the curvature of the ball 12.
  • the polishing film 13 is preferably unrolled, in particular as a spherical segment, and/or cut to size as an unfolding, in particular as a spherical segment.
  • unfolding in the sense of the present invention is preferably to be understood as the expansion of a particularly curved or three-dimensional surface into a (two-dimensional) plane, particularly such that the lengths of the surface are retained.
  • the lateral surface of a cylinder can be (exactly) developed into a (flat) rectangle.
  • a sphere can be approximated or developed in segments.
  • the polishing film 13 is in the form of a corresponding sphere development, in particular a sphere segment development, of the free surface 12a of the sphere 12 .
  • the polishing film 13 or the polishing surface 13a is preferably segmented and/or formed by a plurality of segments S, preferably at least four or six segments S, in particular of the same size.
  • the polishing film 13 or the polishing surface 13a is formed by four segments S.
  • other solutions are also possible here, as will be explained in more detail below.
  • the segments S can abut one another laterally or in the circumferential direction of the ball 12 and/or be spaced apart from one another laterally or in the circumferential direction of the ball 12 .
  • the channels of the polishing film 13 or between the segments S preferably intersect on the end face of the polishing tool 10 or in the tool axis A1 and extend from the point of intersection to the edge of the holder 11 or the receptacle 11b.
  • the channels it is possible for the channels to widen from the point of intersection to the edge of the holder 11 or the receptacle 11b.
  • a polishing agent (not shown) can be distributed evenly over the polishing surface 13a through the channels. Furthermore, debris from the workpiece and/or the polishing film 13 can collect in the channels.
  • the polishing film 13 preferably has a thickness of at least 0.1 mm, in particular at least 0.3 mm, particularly preferably at least 0.4 mm, and/or at most 3 mm, in particular at most 2 mm, particularly preferably at most 1 mm.
  • the thickness of the polishing film 13 is very particularly preferably at least essentially 0.5 mm.
  • a polishing film 13 that is too thick does not adapt so well to the curvature of the ball 12, so that the polishing tool 10 may have to be dressed during production.
  • a polishing film 13 that is too thin can tear more quickly during polishing.
  • the polishing film 13 is preferably made of a particularly porous or structured plastic film, for example made of polyurethane, preferably with a filling material or polishing material being introduced into the polishing film 13 .
  • the polishing film 13 is cut from a 0.5 mm thick film made of polyurethane LP-13 with cerium oxide as the filling material or polishing material.
  • the polishing film 13 can be glued to the free surface 12a of the sphere 12 or the first sphere segment.
  • polishing sheet 13 according to FIG 2 makes it clear that the spherical windings can be designed differently depending on the size and the requirements of the individual case. While the polishing sheet 13 according to Figure 1a has the form of a "flower-shaped” spherical development with four "petals” or segments S, has the polishing film 13 according to FIG 2 the form of a "flower-shaped” spherical development with six “petals” or segments S.
  • the segments S are of the same size or have the same dimensions.
  • the segments S are each formed as an isosceles triangle with (slightly) convexly curved legs.
  • the polishing film or layer 13 can also be applied to the ball 12 in other ways.
  • the ball 12 is preferably formed in one piece.
  • the ball 12 is preferably elastic, in particular more elastic or flexible or softer than the holder 11.
  • the ball 12 preferably has a modulus of elasticity of at least 0.5 N/mm 2 or 1 N/mm 2 and/or at most 100 N/mm 2 , 50 N/mm 2 or 10 N/mm 2 .
  • the modulus of elasticity is preferably a material parameter for the relationship between tension or pressure and expansion or compression during the deformation of a (test) body made of the material.
  • a material with a low modulus of elasticity is consequently softer or more elastic or more easily compressible than a material with a higher modulus of elasticity.
  • the ball 12 is preferably made of a rubber material, in particular a synthetic rubber, for example acrylonitrile-butadiene rubber.
  • rubber material in the context of the present invention is preferably to be understood as meaning all materials that are rubber-elastic.
  • Elastomers such as rubber, in particular natural rubber and/or synthetic rubber, such as silicone rubber, are particularly preferred as rubber materials for the purposes of the present invention.
  • elastic or "elasticity” in the context of the present invention is preferably to be understood as meaning the property of a material to change its shape elastically, i.e. not plastically, under the action of force and to change into its shape when the acting force is removed - without permanent deformation return to original shape.
  • the Shore hardness, in particular the Shore D hardness, of the ball 12 is preferably at least SH 30 or SH 40 and/or at most SH 70 or SH 65.
  • the hardness is preferably a material property that can be used as a measure of the (mechanical) resistance of a material that the material opposes to mechanical penetration by another body.
  • the Shore hardness in particular the Shore D hardness, is preferably determined in accordance with DIN EN ISO 868:2003-10 and/or DIN ISO 7619-1:2012-02.
  • the ball 12 preferably has a diameter of at least 5 mm or 10 mm, in particular at least 20 mm or 30 mm, and/or at most 100 mm or 80 mm, in particular at most 50 mm or 40 mm.
  • the polishing tool 10 in particular the ball 12, it is necessary for the polishing tool 10, in particular the ball 12, to have a very precise geometry, ie a geometry with small geometric deviations or tolerances.
  • the ball 12 is ground and/or has a roundness accuracy of 0.01 mm or 0.02 mm, preferably with the roundness being determined according to DIN EN ISO 1101:2014.
  • Figure 3a shows the polishing tool 10 according to a further embodiment in a schematic section.
  • Figure 3b 12 is an enlarged view of the polishing tool 10 of FIG Figure 3a in the recording area 11b.
  • the ball 12 is embedded or inserted at least partially, preferably halfway, into the holder 11, in particular the receptacle 11b, in particular in such a way that the first spherical segment protrudes from the holder 11 or the receptacle 11b.
  • the receptacle 11b is preferably (concavely) curved, in particular spherical.
  • the curvature of the receptacle 11b particularly preferably corresponds to the curvature of the sphere 12 and/or the receptacle 11b or an (imaginary) sphere delimited by the receptacle 11b has an (internal) diameter which is at least essentially the (external) diameter corresponds to the ball 12 or is slightly larger, for example by no more than or exactly 0.5 mm or 1 mm, than the (outside) diameter of the ball 12 .
  • the (internal) diameter of the receptacle 11b or an (imaginary) sphere delimited by the receptacle 11b is smaller than the (external) diameter of the sphere 12, preferably by at least or exactly 0.5mm, 0.4mm, 0.3mm or 0.2mm.
  • the (largest) (internal) diameter of the receptacle 11b or of an (imaginary) sphere delimited by the receptacle 11b is preferably at least 10 mm, 20 mm or 30 mm and/or at most 100 mm, 50 mm or 40 mm.
  • the depth or axial extension of the receptacle 11b preferably corresponds at least essentially to the radius of the ball 12.
  • the ball 12 in particular the second ball segment or the second or covered surface 12b, is glued to the holder 11 or the receptacle 11b, as is the case with a glued seam or layer 14 in Figures 3a and 3b implied.
  • the polishing tool 10 in particular the holder 11, has a channel 15, preferably with the channel 15 opening axially or centrally into the receptacle 11b.
  • the channel 15 preferably connects the receptacle 11b with the environment.
  • the channel 15 preferably has a first or axial channel section 15a and a second or radial channel section 15b.
  • the channel 15, in particular the first channel section 15a, preferably extends axially through the holder 11 or from the adapter region 11a to the receptacle 11b.
  • the second channel section 15b preferably extends radially through the holder 11, in particular the adapter area 11a, and/or transversely to the first channel section 15a. In the illustrated embodiment, the second channel section 15b extends completely through the bracket 11 or from one side to the other side. This prevents imbalance from occurring.
  • the channel 15 is preferably formed by one or more bores in the holder 11 .
  • the channel 15 preferably has a diameter of more than 1 mm and/or less than 5 mm, particularly preferably at least essentially 3 mm.
  • air and/or adhesive can be pressed into the channel 15, in particular the first channel section 15a, in particular in such a way that the ball 12 is wetted with the adhesive layer 14 over its entire surface and/or without pressure is or is in contact.
  • a pressure equalization when the ball 12 is inserted into the holder 11 is consequently made possible by means of the first channel section 15a.
  • the second channel section 15b is preferably arranged in the adapter area 11a, it is prevented that the polishing agent and/or material removed during the polishing process gets into the second channel section 15b and possibly clog it.
  • the receptacle 11b preferably has a plurality of, in particular two, areas or sections, particularly preferably with the areas differing in geometry from one another.
  • the receptacle 11b preferably has a first or inner area 11c and a second or outer area 11d preferably directly adjoining the first area 11c, preferably with the second area 11d having or forming an axial end of the holder 11 or the receptacle 11b .
  • the first region 11c is preferably concave, in particular spherical.
  • the curvature or the diameter of the first region 11c or an (imaginary) sphere delimited by the first region 11c particularly preferably corresponds at least essentially to the curvature or the diameter of the sphere 12.
  • the first region 11c is consequently preferably designed as a spherical segment or spherical shell, in particular with the radius of the spherical segment or spherical shell corresponding at least essentially to the radius of the sphere 12 .
  • the second area 11d is preferably of cylindrical design.
  • the second region 11d is straight or not curved in the axial direction.
  • the diameter of the preferably cylindrical second area 11d is smaller than the diameter of the preferably spherical first area 11c and/or the ball 12, in particular by at least or exactly 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm or 0.5mm.
  • annular (slight) press fit or a centering fit for the ball 12 is preferably produced by means of the second region 11d.
  • a frictional connection is preferably generated between the ball 12 and the holder 11 or a (frictional) force is exerted on the ball 12 exclusively in the second area 11d or by the second area 11d. It is consequently preferred that the ball 12 or the second ball segment is accommodated in the first area 11c without tension or pressure.
  • the receptacle 11b in particular the second region 11d, is preferably designed in such a way that the ball 12 is pressed exclusively or at least predominantly radially or transversely to the tool axis A1. In this way, the ball 12 is held securely in the receptacle 11b and the ball 12 is prevented from being pushed out of the holder 11 .
  • the depth or axial extension of the first region 11c is preferably smaller than the radius of the sphere 12.
  • the second region 11d preferably has a depth or an axial extension of at least 1 mm or 2 mm and/or at most 5 mm.
  • the second area 11d preferably follows the first area 11c continuously or steplessly.
  • the first area 11c transitions continuously or steplessly into the second area 11d.
  • solutions are also possible in which the transition between the first area 11c and the second area 11d has a step or a bend.
  • the holder 11 can be shaped differently or have different sizes and/or diameters depending on the size of the ball 12 to be accommodated and depending on the requirements of the individual case.
  • the polishing tools 10 shown basically have a comparable structural design and differ primarily in the dimensioning of the receptacle 11b.
  • the polishing tool 10 has the adapter area 11a for connection to a tool spindle (not shown).
  • the polishing tool 10 in particular the holder 11, has a shank 16 and a head 17, the shank 16 preferably connecting the adapter region 11a to the head 17.
  • the polishing tool 10, in particular the holder 11, preferably has a stop 18 for the defined fastening or holding of the polishing tool 10 on the associated tool spindle or its tool chuck.
  • the stop 18 serves here in particular to fix a defined axial position of the polishing tool 10 relative to the tool spindle.
  • the head 17 preferably has or forms the receptacle 11b.
  • the receptacle 11b is delimited or formed by the wall of the head 17 .
  • the head 17 has the smallest (outside) diameter of the holder 11 and/or the (largest) (outside) diameter of the head 17 is smaller than the (outside) diameter of the adapter area 11a.
  • the shank 16 is preferably designed here as a cone or truncated cone and/or tapers in particular continuously in the direction of the head 17 or the receptacle 11b.
  • Brackets 11 shown are preferably for receiving a compared to the embodiment according to Figures 3a and 3b formed larger ball 12, for example with a diameter of at least substantially 20 mm, 30 mm or 40 mm.
  • the head 17 is preferably designed like a mushroom head and/or the (outside) diameter of the holder 11 increases from the shaft 16 to the head 17.
  • the (largest) (outside) diameter of the head 17 can be larger than the (largest) (outside) diameter of the shaft 16 and/or the adapter area 11a, as in particular the embodiment according to FIG. Figures 6a and 6b illustrated.
  • the shank 16 is at least essentially cylindrical and/or the shank 16 has a constant (outer) diameter along the tool axis A1.
  • the proposed device for polishing a workpiece preferably has a rotatably driven tool spindle and the proposed polishing tool 10, with the polishing tool 10 being attached to the tool spindle in an exchangeable manner.

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

Claims (11)

  1. Polissoir (10) comprenant:
    un support (11),
    une bille (12) logée dans le support (11),
    un film de polissage (13) recouvrant totalement ou partiellement la surface (12a) libre de la bille (12).
  2. Polissoir selon la revendication 1, comprenant en outre un logement (11b) dans lequel la bille (12) est logée, en particulier par liaison de complémentarité de force et/ou de matière.
  3. Polissoir selon la revendication 1 ou 2, caractérisé en ce que le support (11) est moulé à partir d'une matière plastique.
  4. Polissoir selon l'une quelconque des revendications précédentes, caractérisé en ce que la bille (12) est constituée d'une matière caoutchouteuse.
  5. Polissoir selon l'une quelconque des revendications précédentes, caractérisé en ce que la bille (12) présente une dureté Shore d'au moins SH 30 et/ou d'au plus SH 70, en particulier dans la plage comprise entre SH 50 et SH 65.
  6. Polissoir selon l'une quelconque des revendications précédentes, caractérisé en ce que le film de polissage (13) présente la forme d'un développement de la bille et/ou est formé par une pluralité de segments (S).
  7. Polissoir selon la revendication 6, caractérisé en ce que le développement de la bille ou les segments (S) sont découpés dans un film plat.
  8. Polissoir selon l'une quelconque des revendications précédentes, caractérisé en ce que le film de polissage (13) est fixé sans tension et/ou sans pli sur la surface (12a) libre de la bille (12).
  9. Polissoir selon l'une quelconque des revendications précédentes, caractérisé en ce que le support (11) comprend un canal (15), lequel débouche dans le logement (11b).
  10. Polissoir selon l'une quelconque des revendications précédentes, caractérisé en ce que le support (11), en particulier le logement (11b), comprend une première zone (11c), en particulier sphérique, et une seconde zone (11d), en particulier cylindrique, dans lequel, de préférence le diamètre de la seconde zone (11d) est inférieur au diamètre de la bille (12).
  11. Dispositif pour polir une pièce, comportant une broche porte-outil entraînée en rotation et un polissoir (10),
    dans lequel le polissoir (10) est fixé de manière interchangeable à la broche porte-outil,
    caractérisé en ce
    que le polissoir (10) est conçu selon l'une quelconque des revendications précédentes.
EP20701034.9A 2019-01-17 2020-01-16 Polissoir et dispositif pour polir une pièce Active EP3880403B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019000255 2019-01-17
DE102019005294.3A DE102019005294A1 (de) 2019-01-17 2019-07-29 Polierwerkzeug und Vorrichtung zum Polieren eines Werkstücks
PCT/EP2020/051033 WO2020148390A1 (fr) 2019-01-17 2020-01-16 Polissoir et dispositif pour polir une pièce

Publications (3)

Publication Number Publication Date
EP3880403A1 EP3880403A1 (fr) 2021-09-22
EP3880403C0 EP3880403C0 (fr) 2023-06-07
EP3880403B1 true EP3880403B1 (fr) 2023-06-07

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EP20701034.9A Active EP3880403B1 (fr) 2019-01-17 2020-01-16 Polissoir et dispositif pour polir une pièce

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US (1) US20220072675A1 (fr)
EP (1) EP3880403B1 (fr)
CN (1) CN113302018A (fr)
DE (1) DE102019005294A1 (fr)
WO (1) WO2020148390A1 (fr)

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US20190210179A1 (en) * 2018-01-11 2019-07-11 Michael Yager Tool for sanding and buffing and method of use

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Also Published As

Publication number Publication date
CN113302018A (zh) 2021-08-24
DE102019005294A1 (de) 2020-07-23
EP3880403C0 (fr) 2023-06-07
US20220072675A1 (en) 2022-03-10
EP3880403A1 (fr) 2021-09-22
WO2020148390A1 (fr) 2020-07-23

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