EP3787835B1 - Dispositif combiné de meulage et de brossage - Google Patents

Dispositif combiné de meulage et de brossage Download PDF

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Publication number
EP3787835B1
EP3787835B1 EP20730982.4A EP20730982A EP3787835B1 EP 3787835 B1 EP3787835 B1 EP 3787835B1 EP 20730982 A EP20730982 A EP 20730982A EP 3787835 B1 EP3787835 B1 EP 3787835B1
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EP
European Patent Office
Prior art keywords
grinding
combined grinding
brush
brushing
brushing apparatus
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
EP20730982.4A
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German (de)
English (en)
Other versions
EP3787835C0 (fr
EP3787835A1 (fr
Inventor
Rainer GULDE
Michael RIEGGER
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.)
Riegger Diamantwerkzeuge GmbH
Hartmetall Werkzeugfabrik Paul Horn GmbH
Original Assignee
Riegger Diamantwerkzeuge GmbH
Hartmetall Werkzeugfabrik Paul Horn GmbH
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Publication date
Application filed by Riegger Diamantwerkzeuge GmbH, Hartmetall Werkzeugfabrik Paul Horn GmbH filed Critical Riegger Diamantwerkzeuge GmbH
Publication of EP3787835A1 publication Critical patent/EP3787835A1/fr
Application granted granted Critical
Publication of EP3787835C0 publication Critical patent/EP3787835C0/fr
Publication of EP3787835B1 publication Critical patent/EP3787835B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/10—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising assemblies of brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/14—Zonally-graded wheels; Composite wheels comprising different abrasives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/18—Wheels of special form

Definitions

  • the present application relates to a combined grinding and brushing device that defines an axis of rotation about which the combined grinding and brushing device is rotated in use.
  • the present invention also relates to a machine tool for machining workpieces using the combined grinding and brushing device according to the invention.
  • Grinding wheels are used in the manufacturing industry, for example, for edge and surface processing of materials with high hardness values, such as hard metal or cermet.
  • the grinding wheels used to process these hard materials usually have diamond and/or CBN-containing grinding materials as the grinding material, the hardness value of which is greater than the hardness value of the material to be processed.
  • Examples of workpieces to be processed that require edge and surface processing carried out by grinding are carbide indexable inserts, which are usually made from sintered blanks. These carbide indexable inserts are preferably ground on fully automatic CNC peripheral grinding machines in such a way that sharp and sleek edges can be produced.
  • grinding machines specially designed for indexable insert production are usually used in the grinding machining process.
  • Such grinding machines are offered by various manufacturers, for example Agathon AG ( https://agathon.ch/ ).
  • a large number of grinding wheels are also available on the market from these manufacturers, which are designed, for example, with special diamond or CBN slip rings and are preferably available in a diameter range of 250 to 400 mm.
  • Such slip rings are usually designed to grind the peripheral surfaces and the cutting edges of the geometrically complex indexable inserts. After grinding the peripheral surfaces and cutting edges, they are considered sharpened, but in the sharpened state they are not yet suitable for use in a turning or milling tool, as the ground cutting edges would be destroyed (worn) upon initial contact with the hard workpiece surface. Such wear can be explained using the example of a knife blade hitting a stone, whereby such an action would immediately dull the knife blade.
  • Edge preparation has the advantage that an additional coating applied to the cutting plates (e.g. a CBN coating) has a better adhesive effect on the edges optimized by edge preparation.
  • the cutting edges are usually rounded (rounded) by an additional processing step of brushing, blasting or drag grinding.
  • the indexable inserts to be machined are threaded onto a rod via a preferably existing central hole in the indexable inserts, with a predetermined distance being maintained between the threaded indexable inserts.
  • spacer bushings or sleeves are usually used, which are threaded between two adjacent indexable inserts.
  • a rod equipped in this way is then clamped onto a so-called planetary gear.
  • the nozzles of the wet blasting machine are then adjusted at a predetermined angle to the cutting edges of the indexable inserts to be blasted, depending on the result to be achieved.
  • the nozzles While driving past the cutting edges of the indexable inserts to be treated at a predetermined speed, the nozzles "shoot" a water-silicon mixture jet or a water-corundum mixture jet onto the cutting edges to be blasted under a predetermined pressure.
  • the cutting edges are rounded by the high-pressure irradiation.
  • a disadvantage of the wet blasting process is that it requires a lot of time (and therefore high costs) due to the preparation, ie threading the workpieces and spacer sleeves.
  • Another frequently used edge preparation process is the above-mentioned brushing of the ground cutting edges, whereby in such a processing step the cutting edges of the indexable inserts are rounded using an abrasive brush.
  • Common brushes available on the market are, for example, so-called disc brushes or round brushes, which are used for the purpose of rounding edges. Brushing is usually carried out manually, mechanically or robot-controlled, although the latter two semi- or fully-automatic brushing methods will be discussed later.
  • the indexable inserts to be machined are guided past a rotating brush by hand at a certain angle of attack and contact pressure. Due to this manual processing, the properties of the cutting edges and surfaces to be achieved are sometimes very different, with the processing result, for example, directly depending on a variation of the contact pressure, angle of attack and the contact time between the brush and the workpiece.
  • the quality of the machined surface or cutting edge can therefore vary, for example, depending on the skills of the processor, which is noticeable for an end customer in a variation in the wear resistance or service life of the indexable insert.
  • Another disadvantage of manual brushing is that the brushing is carried out on a brush that is separate from the grinding machine, which creates additional transport routes. These additional transport routes increase the risk of improper handling of the indexable inserts, which can lead to damage to the highly sensitive cutting edges. For example, even a slight collision of the indexable inserts during transport (for example due to bumps or vibrations) is enough to lead to chipping and/or microcracks. Indexable inserts damaged in this way are no longer suitable for sale to an end customer.
  • the deburring of components is another area of application for brushes worth mentioning.
  • materials that are particularly prone to burr formation e.g. molybdenum
  • the deburring of workpieces does not have the same quality requirements as the edge preparation of indexable inserts.
  • deburring requires significantly more time compared to edge preparation.
  • machine brushing or robot-controlled brushing is used, for example, especially in large series production.
  • the workpieces to be machined are placed in devices specially developed for this purpose, whereby these devices are custom-made products that only fit a specific type of indexable insert and are only suitable for a specific type of edge preparation is suitable.
  • a large number of specially developed devices are also required for a large number of indexable inserts in order to be able to use the advantages of machine brushing.
  • a new device must be developed and manufactured for each customer request regarding special edge preparation, which results in high overall development and production costs for the devices.
  • an abrasive additive such as polishing paste or polishing wax
  • an abrasive additive often has to be used to ensure the desired surface qualities or cutting edge qualities.
  • Such an abrasive additive leads to a necessary cleaning step of the indexable inserts or workpieces afterwards in order to remove the polishing paste or polishing wax. This also results in increased labor and material costs.
  • Robot-controlled brushing systems are therefore only suitable for manufacturing companies with very large quantities, for example if a certain type of indexable insert is to be manufactured in 24/7 operation.
  • a special specialist is required to operate the robot-controlled brushing system, as reprogramming of the robot arm is required depending on the type of edge preparation and type of indexable insert.
  • a combined grinding and brushing device which defines an axis of rotation about which the combined grinding and brushing device is rotated when in use, the combined grinding and brushing device having a base body.
  • the base body is essentially designed in the shape of a disk, ring, plate, cup or bell and extends in a circumferential direction around the axis of rotation.
  • the base body has an abrasive coating in a first, annular region, which is arranged directly on the base body and extends at least partially around the axis of rotation in the circumferential direction.
  • the base body has a brush in a second, annular area spaced from or adjacent to the first area, which is arranged directly on the base body and extends at least partially around the axis of rotation in the circumferential direction.
  • the brush is preferably an abrasive brush.
  • the second, annular region is arranged on a lateral surface oriented transversely to the first, annular region on the inner or outer edge of the base body or is offset from the first, annular region in the axial direction along the axis of rotation.
  • the brush has a plurality of partial brushes which are arranged in different segments spaced apart from one another along the circumferential direction in the second region on the combined grinding and brushing device.
  • Each of the partial brushes has a plurality of brush elements, each of which is attached to the base body with a first end and each protrudes from the base body with a free end opposite the first end in such a way that the free ends are in contact with the workpiece to be brushed during brushing Come into contact with the surface of the workpiece.
  • the object according to the invention is achieved by a machine tool, preferably a rotary grinding machine, for machining a workpiece with the combined grinding and brushing device according to the invention.
  • a significant advantage of the combined grinding and brushing device according to the invention is that by arranging a brush on the combined grinding and brushing device, the originally separate operations of grinding and subsequent brushing are combined. In other words, the edge preparation operation, which originally took place after a grinding process and was carried out on a separate machine, is now integrated into the grinding operation.
  • a brush in addition to the abrasive coating provided in the first region of the base body, a brush is provided which is arranged in the second region of the base body. This makes brushing possible immediately after the grinding process on the same (turning) grinding machine, i.e. using the same tool.
  • the workpiece to be machined e.g. an indexable insert
  • the workpiece to be machined can be clamped once on the machine tool for machining and first processed by grinding in a first partial operation.
  • the workpiece can be brushed without having to be unclamped or re-clamped and transported.
  • the change between grinding and brushing is preferably carried out simply by adjusting (for example by moving along a movement axis of the machine tool) the combined grinding and brushing device relative to the workpiece.
  • a further advantage of the combined grinding and brushing device according to the invention is that the workpiece machining process ensures consistent quality regardless of quantity due to the combined tool.
  • the quality of the brushing is no longer dependent on a processor, as mentioned above, but can be carried out unmanned in the case according to the invention. This leads in particular to economic production advantages.
  • a further advantage is that the combined grinding and brushing device according to the invention can be used, for example, on a CNC-controlled peripheral grinding machine for machining components and workpieces, with the combination of grinding coating and brush according to the invention allowing machining on the same base body of the combined grinding and brushing device the workpieces can always be carried out at the same angle of attack, pressure and with the same processing time.
  • This has the advantage, particularly for brushing, that, for example, quality deviations due to different processing times, different angles of attack and different contact pressures that occurred during manual brushing are now eliminated.
  • a large number of working parameters at which the brush can be operated can be influenced via a (CNC) control using a machine tool, preferably a CNC-controlled peripheral grinding machine.
  • CNC CNC-controlled peripheral grinding machine.
  • the speed at which the slip ring rotates around its axis of rotation on the peripheral grinding machine can be varied, which means that the shape and design of the edge rounding can be influenced during brushing.
  • a further advantage is that the attachment of the brush according to the invention in the second area of the base body of the combined grinding and brushing device as well as an advantageous design of the brush means that a previously common final cleaning operation after brushing on an external machine is no longer necessary.
  • brushing with the combined grinding and brushing device according to the invention is preferably carried out using a cooling medium (for example an oil or an emulsion) that is already used in the grinding.
  • Segmenting the brush into individual partial brushes has the particular advantage that the attachment of the brush in the second area of the base body of the combined grinding and brushing device is simplified, since the brush does not need to be manufactured to fit the second area.
  • the brush is composed of individual partial brushes or segments, which are preferably arranged at a distance from one another in the circumferential direction in the second region.
  • the term “brush” does not mean a continuous block, but rather a brush that consists of a large number of separated brush elements (“brush hairs”).
  • the brush elements are preferably made of metal (e.g. steel) or nylon. Starting from the second region of the base body, the individual brush elements do not necessarily have to be aligned in the same direction, i.e. parallel to one another, but can also have different angles of inclination to one another, for example.
  • the brush according to the invention preferably has a dimensioning specifically adapted to the dimension of the combined grinding and brushing device or the second region of the combined grinding and brushing device, which allows the brush to be easily attached directly in the second region of the base body of the combined grinding and brushing device Brush device is simplified.
  • the brush is preferably designed as an abrasive brush.
  • the brush according to the invention preferably has the usual technical properties of conventional brushes available on the market for processing workpieces. It is also advantageous that the brush or the individual brush elements (ie the brush trim) have chemical resistance compared to the cooling lubricants used in a normal grinding process (e.g. emulsions or special grinding oils).
  • disk-, ring- or plate-shaped means that the base body preferably has the geometric shape of a disk, a ring or a plate.
  • pot-shaped or bell-shaped is understood to mean that the base body has a geometric shape that essentially corresponds to the shape of a pot or a bell. This means that the shape of the base body can only correspond to a partial area of a pot or a bell.
  • a “disc” is understood to mean a geometric body in the form of a cylinder whose radius is many times higher than its thickness.
  • the disk-shaped base body preferably has a concentric opening, in other words it is preferably designed as a hollow cylindrical shape.
  • annular base body can also be understood to mean, for example, an embodiment as an annular base body.
  • the base body is preferably ring-shaped in every cross section. However, its outer and/or inner diameter can vary along the axis of rotation.
  • the base body can therefore also have the shape of a hollow truncated cone. This is also considered here to be “essentially ring-shaped”.
  • a plate-shaped design of the base body is understood to mean, for example, a continuously designed, preferably cylindrical, plate, through which the combined grinding and brushing device is formed.
  • the base body usually has a somewhat more complex geometry and is not strictly disk-, ring-, plate-, cup- or bell-shaped. In this case it is therefore referred to as: described as "essentially disk-, ring-, plate-, cup- or bell-shaped", which is intended to express that the basic geometry of a disk, a ring, a plate, a pot or a bell corresponds to or at least resembles the overall geometry of the
  • the base body can at least partially deviate from it.
  • first area and second area are understood to mean two areas arranged separately from one another on the base body, which can correspond, for example, to partial areas of a total area of the base body.
  • Both the abrasive coating and the brush are provided directly on the base body of the combined grinding and brushing device, i.e. not spaced from it. This explicitly excludes an embodiment in which, for example, a round brush and a grinding wheel arranged separately from it are coupled to one another via a common shaft.
  • the base body including the first region and the second region, is formed in one piece.
  • the base body of the combined grinding and brushing device can be produced, for example, by a single manufacturing process, for example by milling, sintering or injection molding.
  • the first area and the second area arise directly from the production of the base body and are not separately attached to it.
  • the base body has a first partial body and a second partial body connected to the first partial body, the abrasive coating being arranged on the first partial body and the brush being arranged on the second partial body.
  • This embodiment describes a base body that is composed of two parts that are, for example, screwed together.
  • the two partial bodies can also be connected to one another in a non-detachable manner, for example by gluing, welding or soldering.
  • the geometry of the two partial bodies can change distinguish, the geometry of the base body still being essentially disk-shaped, ring-shaped, plate-shaped, cup-shaped or bell-shaped according to the overall impression.
  • the first partial body is designed in the shape of a disk, ring or plate and the second partial body is designed in the shape of a cup or bell.
  • a tool interface for connecting the combined grinding and brushing device to a machine tool is provided on the second partial body.
  • the two partial bodies of the base body each have different geometries from one another, the overall impression of the geometry of the base body is still essentially pot-shaped or bell-shaped, since the disc-, ring- or plate-shaped configuration of the first partial body is in the connected state of the two partial bodies Essentially integrated in a pot or bell shape, that is, not highlighted by it.
  • the abrasive coating has a metallic and/or mineral abrasive material.
  • relevant parameters such as the concentration of the cutting material, e.g. represented by predetermined diamond or CBN grain types, and/or by selecting certain binding materials, are preferably optimized in such a way that they are suitable, for example, for grinding a specific hard metal material workpiece to be machined are suitable.
  • the use of the abrasive material to be selected varies depending on the material and hardness of the workpiece to be processed, with a large number of different abrasive coatings with a wide variety of metallic and/or mineral material compositions already available on the market.
  • the base body has an opening extending centrally around the axis of rotation, with an inner border of the base body surrounding the opening having a smaller radial distance from the axis of rotation than an outer border of the base body.
  • This formulation specifically describes the preferred cross-sectional shape of the combined grinding and brushing device (viewed in a cross-section orthogonal to the axis of rotation).
  • the cross-sectional shape is preferably annular, i.e. has a smaller inner circle diameter than the outer circle diameter. In other words, this means that the circular inner border of the circular disk-shaped cross section is smaller than the circular outer border.
  • This configuration not only includes hollow cylindrical designs of the base body, but also includes, for example, conically tapering, i.e. hollow cone-like or truncated cone-like designs of the base body with respect to the axis of rotation.
  • a radially outer edge of the abrasive coating is flush with the outer edge of the base body.
  • the outer edge of the abrasive coating and the outer border of the base body are preferably circular and have the same distance from the axis of rotation, which defines that the abrasive coating arranged in the first area does not have its outer border over the base body of the combined grinding and brushing device protrudes in the radial direction.
  • the first region of the base body is preferably an annular region whose inner diameter is enlarged compared to the inner diameter of the base body and whose outer diameter corresponds to the outer diameter of the base body.
  • the combined grinding and brushing device is rotationally symmetrical to the axis of rotation.
  • rotationally symmetrical includes both a rotationally symmetrical configuration of the combined grinding and brushing device (360° rotational symmetry) and an angle-dependent rotationally symmetrical configuration of the combined grinding and brushing device (e.g. 90°, 120° or 180° rotational symmetry). ).
  • a rotationally symmetrical design of the combined grinding and brushing device has the advantage that the user does not have to pay attention to its specific positioning when using the combined grinding and brushing device, but rather can use the combined grinding and brushing device in any position, ie for Machining the workpiece can be used.
  • the first region has a first radial distance from the axis of rotation and the second region has a second radial distance from the axis of rotation, the first radial distance being unequal to the second radial distance.
  • the first area and the second area do not overlap, and are therefore provided on the base body at a distance from one another.
  • the two areas can directly adjoin one another.
  • This configuration guarantees that the partial operations of grinding and brushing are clearly separated from one another by the geometric arrangement of the grinding coating and the brush on the combined grinding and brushing device.
  • a change between grinding and brushing can be made possible by moving the combined grinding and brushing device along at least one movement axis of the machine tool.
  • an effective area of the abrasive coating defines a first plane that is aligned transversely to the axis of rotation.
  • the first plane is aligned orthogonally to the axis of rotation.
  • transverse here means any orientation that is not parallel. This includes, but is not limited to, orthogonal alignment. “Transverse” should therefore not be confused with “vertical”, but rather means an orientation at an angle other than 0°.
  • the term “effective area” is understood to mean the area of the abrasive coating that comes into direct contact with the workpiece surface when grinding a workpiece.
  • This formulation includes that the abrasive coating has individual grains that protrude towards the workpiece surface. In other words, in the first level there are a large number of potential contact points of individual grain sizes of the abrasive coating with a workpiece surface to be machined.
  • At least some of the free ends of the brush lie in a second plane that is parallel to the first plane in which the effective range of the abrasive coating lies.
  • the brush and abrasive coating are arranged parallel to one another.
  • the workpiece to be machined and/or the combined grinding and brushing device must therefore only be adjusted along one axis, for example in the radial direction.
  • the first level is offset from the second level along the axis of rotation.
  • the brush and abrasive coating are arranged parallel to one another, but offset from one another along the axis of rotation.
  • the workpiece to be machined and/or the combined grinding and brushing device must therefore be adjusted along two axes, for example in the radial direction and axial direction.
  • At least some of the free ends lie on a lateral surface that is aligned transversely to the first plane.
  • the abrasive coating can be arranged on an annular cross-sectional area of the base body.
  • the brush on the other hand, can be arranged on a lateral surface on the inner or outer edge that is oriented transversely to the annular surface.
  • the lateral surface is preferably aligned parallel to the axis of rotation and orthogonal to the first plane.
  • the abrasive coating is on an end face of the combined grinding and brushing device arranged orthogonally oriented to the axis of rotation, whereas the brush is arranged at an inner or outer edge of the combined grinding and brushing device which is oriented parallel to the axis of rotation.
  • the brush elements are at least partially directed radially inwards or outwards.
  • This arrangement means in particular that the brush is attached to an outer surface and/or inner surface of the base body.
  • the brush is detachably attached to the base body.
  • This configuration has the particular advantage that by releasably attaching the brush coating to the base body, it can be replaced after a defined period of use or wear, regardless of the service life of the abrasive coating. This makes it possible to change the abrasive coating independently of changing the brush, which ensures the maximum service life in both cases.
  • the brush is cohesively connected to the base body.
  • a cohesive connection can be particularly advantageous if the brush is exposed to strong shear forces during use (i.e. strong forces acting orthogonally to the longitudinal orientation of the individual brush elements) and the brush is to be prevented from becoming detached due to shear.
  • the brush can, for example, be soldered, welded or glued to the base body.
  • the abrasive coating is integrally connected to the base body.
  • Such an integral connection between the base body and the abrasive coating can be achieved, for example, by the sintering process, whereby a mixture of substances that forms the abrasive coating is connected to the base body by sintering.
  • the base body is made entirely from the material mixture used for grinding, for example via a sintering process, in which case the abrasive coating is an integral part of the base body.
  • Fig. 1 shows a machine tool with an exemplary embodiment of a combined grinding and brushing device according to the invention, the machine tool being identified in its entirety with the reference number 100.
  • the combined grinding and brushing device according to the invention is identified by reference number 10.
  • the machine tool 100 is preferably a peripheral grinding machine, more preferably a CNC-controlled peripheral grinding machine, which is used for machining workpieces.
  • a workpiece 12 to be machined is represented by an indexable cutting insert 12, which is mounted on a workpiece carrier 14 of the machine tool 100.
  • the indexable insert 12 is applied to a mandrel-like attachment of the workpiece carrier 14 and aligned with respect to the combined grinding and brushing device 10 in such a way that machining of a cutting edge 16 of the indexable insert 12 is made possible by the combined grinding and brushing device 10 (see Fig. 2 ).
  • the workpiece carrier 14 or the indexable cutting insert 12 is set with a predefined angle of attack relative to the combined grinding and brushing device 10 in order to enable predefined machining of the cutting edges 16 of the indexable cutting insert 12.
  • the combined grinding and brushing device 10 is mounted on the machine tool 100 via a tool interface 18, with the combined grinding and brushing device 10 being mounted on the tool interface 18 via fastening screws 20 in the present case (see Fig. 2 ). During processing, the combined grinding and brushing device 10 rotates about an axis of rotation 22.
  • the combined grinding and brushing device 10 has a base body 24 which is essentially disk-, ring- or plate-shaped.
  • the base body 24 is essentially ring-shaped or disk-shaped. More specifically, it has the shape of a hollow truncated cone.
  • the base body 24 can be made, for example, from a metallic material.
  • Grinding with the combined grinding and brushing device 10 according to the invention is carried out by a predefined adjustment of the indexable insert 12 at a predefined angle of attack relative to a grinding coating 32 arranged on the base body 24 of the combined grinding and brushing device 10.
  • the grinding coating 32 is in the in Fig. 1 and 2 In the case shown in the outer region of the combined grinding and brushing device 10, the exact positioning of the grinding coating 32 is discussed in the description Fig. 3-6 will be discussed in more detail.
  • a brush 34 is arranged on the base body 24, the exact positioning of which will also be discussed in the description of the following figures.
  • the machine tool 100 is preferably movable via a control unit (not shown) at least along a first movement axis 26 in order to enable relative adjustability relative to the workpiece 12 at least along the first movement axis 26.
  • the machine tool 100 is set up to be movable along three mutually orthogonal movement axes 26, 28, 30 relative to the workpiece 12 or relative to the workpiece carrier 14.
  • the workpiece carrier 14 can also be moved relative to the combined grinding and brushing device 10 by means of a movement can be moved along at least one direction of movement.
  • an electric motor (not explicitly shown here) can be used, which can preferably be regulated over a large speed range.
  • the combined grinding and brushing device 10 is positioned relative to the indexable insert 12 along the first axis of movement 26 such that the cutting edge 16 of the indexable insert 12 can be brushed by the brush 34 arranged on the base body 24 of the combined grinding and brushing device 10.
  • Brushing is the second partial processing step in the processing of the cutting edge 16 and takes place after a first partial processing step of grinding, in which the indexable cutting insert 12 is positioned along the first axis of movement 26 in such a way that it can come into contact with the abrasive coating 32.
  • a first exemplary embodiment of the combined grinding and brushing device 10 according to the invention is shown in various views.
  • the combined grinding and brushing device 10 is designed to be rotationally symmetrical to the axis of rotation 22.
  • the base body is designed essentially in the shape of a disk or ring, and therefore has the shape of a disk or a ring in a cross-sectional area running orthogonally to the axis of rotation 22.
  • the base body 24 is designed in particular as a hollow truncated cone. It has an opening 36 extending centrally around the axis of rotation 22.
  • the opening 36 defines a circumferential inner border 38 of the base body 24.
  • the inner border 38 has a smaller radial distance from the axis of rotation 22 than a circumferential outer border 40 of the base body 24.
  • the base body 24 which extends in the circumferential direction around the axis of rotation 22, has a first region 42 and a second region 44 spaced from the first region 42.
  • the first region 42 has a first radial distance r 1 from the axis of rotation 22.
  • the second region 44 has a second distance r 2 from the axis of rotation 22, where r 1 is greater than r 2 .
  • the abrasive coating 32 is arranged in the first area 42 of the base body 24.
  • the brush 34 is arranged in the second area 44 of the base body 24.
  • the abrasive coating 32 is According to the first exemplary embodiment, it is therefore arranged further outside than the brush 34, so that it surrounds the brush 34.
  • the first region 42 in which the abrasive coating 32 is arranged, defines an annular surface.
  • the second region 44 in which the brush 34 is arranged, is also designed in the first exemplary embodiment as an annular surface which is set back in the axial direction to the axis of rotation 22 relative to the annular surface of the first region 42.
  • the abrasive coating 32 is designed as a continuous annular block, which preferably has a metallic and/or mineral abrasive material. It is flush with the outer edge 40 of the base body 24 and has an effective area which comes into contact with a surface of this workpiece 12 when grinding a workpiece 12 to be machined.
  • This effective range defines a first plane E1, which is aligned transversely, in the present case orthogonally, to the axis of rotation 22.
  • the effective area of the abrasive coating 32 and thus the plane E1 defined by it is aligned parallel to the axis of rotation 22 or at an acute or obtuse angle to it.
  • the brush 34 has at least a first part brush 34a and a second part brush 34b, which are arranged in different segments along the circumferential direction in the second region 44 on the combined grinding and brushing device 10. According to the in Fig. 3-6 In the first exemplary embodiment shown, the brush 34, more precisely, has a plurality of first and second partial brushes 34a, 34b, which are each arranged in segments in the second region 44 along the circumferential direction.
  • the brush 34 or the partial brushes 34a, 34b has or have a large number of brush elements 46 spaced apart from one another, which are not shown in detail in the figures due to their very small dimensions (in the range of a few tenths of a millimeter to millimeters).
  • the brush elements 46 are with a first end 48 attached to the base body 24. With a free end 50 opposite the first end 48, the plurality of brush elements 46 protrude from the base body 24 in such a way that the free ends 50 come into contact with a surface of the workpiece 12 to be brushed during brushing of the workpiece 12.
  • the surface of the workpiece 12 to be brushed can be, for example, the in Fig. 2 cutting edge 16 shown.
  • the brush 34 or the partial brushes 34a, 34b can, for example, be glued to the base body 24 in a materially bonded manner or screwed to it in a non-positively releasable manner.
  • the free ends 50 of the brush elements 46 lie on a second plane E2 which runs orthogonally to the axis of rotation 22.
  • this second level E2 is equivalent to the first level E1.
  • brush 34 and abrasive coating 32 are arranged next to one another and the free ends 50 of the plurality of brush elements 46 lie at the same height with the effective range of the abrasive coating 32 with respect to the axial direction defined by the axis of rotation 22.
  • the planes E1 and E2 can also be along one another the axis of rotation 22 be offset.
  • the third level E3 runs parallel to the fourth level E4.
  • both planes E3 and E4 are aligned orthogonally to the axis of rotation 22 in the first exemplary embodiment.
  • FIG. 7-30 Six further exemplary embodiments of the combined grinding and brushing device 10 according to the invention are shown, in equivalence to that in Fig. 3-6 shown, first exemplary embodiment, four views are shown for each further exemplary embodiment. Due to the above, for the further Embodiments only address the distinguishing features with respect to the first exemplary embodiment.
  • the free ends 50 of the brush elements 46 lie on a lateral surface 52 which runs parallel to the axis of rotation 22 and extends in the circumferential direction around the axis of rotation 22.
  • the first level E1 is aligned orthogonally to this lateral surface 52.
  • the brush 34 or at least some of the brush elements 46 of the brush 34 are directed outwards in the radial direction and protrude from the base body 24. The free ends 50 of the brush elements 46 thus protrude beyond the outer edge 40 of the base body 24 in the radial direction.
  • the brush 34 has at least the first and the second partial brushes 34a, 34b, which are arranged in different segments in the second region 44 of the base body 24.
  • the second region 44 lies on a lateral surface of the base body 24, which is aligned parallel to the axis of rotation 22. This lateral surface is an outer lateral surface of the base body 24.
  • a movement along the third movement direction 30 of the machine tool 100 is also necessary.
  • a third exemplary embodiment of the slip ring 10 according to the invention is shown. Similar to those Fig. 7 to 10 described, the brush 34 or the at least two partial brushes 34a, 34b are arranged on a lateral surface. However, the lateral surface defined by the second region 44 is provided on the inside of the annular or hollow truncated cone-like base body 24, thus forming an inner lateral surface of the base body 24. At least some of the free ends 50 of the brush 34 also lie on a radially inwardly directed lateral surface. The brush 34 or the Brush elements 46 of the brush 34 are thus directed inwards in the radial direction towards the axis of rotation 22.
  • Fig. 15-18 show a fourth exemplary embodiment similar to that in Fig. 3-6 shown, is similar to the first exemplary embodiment, wherein in the fourth exemplary embodiment the base body 24 is modified compared to the first exemplary embodiment in such a way that the second region 44 is set back relative to the first region 42 in the axial direction to the axis of rotation 22 by a greater distance than in the first exemplary embodiment .
  • the third level E3 is parallel to the fourth level E4 and orthogonal to the axis of rotation 22.
  • first area 42 and the second area 44 or between the third level E3 and the fourth level E4 allows the plurality of brush elements 46 of the brush 34 to be designed to be longer in comparison to the first exemplary embodiment.
  • the brush elements 46 of the first exemplary embodiment have a length of 6 mm
  • the brush elements 46 of the second exemplary embodiment have a length of 12 mm.
  • the first area 42 is offset from the second area 44, for example by 6 mm further than in the first exemplary embodiment in the axial direction to the axis of rotation 22.
  • the free ends 50 of the brush elements 46 are flush with the effective area of the abrasive coating 32 with respect to the axial direction to the axis of rotation 22.
  • the first plane E1 and the second plane E2 are axially at the same height with respect to the axis of rotation 22.
  • FIG. 19-22 A fifth exemplary embodiment of the combined grinding and brushing device 10 according to the invention is shown, in which the brush 34 is arranged similarly to the first and fourth exemplary embodiments.
  • the brush 34 has individual cylindrical brush elements 46, which are each spaced apart and offset from one another in the second region 44 of the base body 24 are arranged.
  • the cylindrical brush elements 46 are arranged essentially at equal distances from one another along a first circle.
  • the cylindrical brush elements 46 are arranged along a second circle substantially at equal distances from one another.
  • the first circle has a larger diameter than the second circle.
  • the brush elements 46 of the first partial brush 34a are rotated at an angle about the axis of rotation 22 relative to the brush elements 46 of the second partial brush 34b in such a way that one brush element 46 of the first partial brush 34a is arranged between two brush elements 46 of the second partial brush 34b.
  • the brush elements 46 can, for example, have a large number of brush hairs which are fastened close to one another with the respective first ends 48 in the second region 44 on the base body 24.
  • the two partial brushes 34a, 34b are not arranged segmentally offset from one another along the circumferential direction, as before, but are offset radially from one another.
  • the base body 24 is dimensioned larger in the axial direction of the axis of rotation 22 compared to the first to fifth exemplary embodiments.
  • the base body 24 has a bell-like configuration with an opening 36 which in turn runs concentrically around the axis of rotation 22 and which has a smaller diameter compared to the first to fifth exemplary embodiments.
  • the shape of the bell-like or cup-shaped base body 24 is therefore still essentially annular in a cross section orthogonal to the axis of rotation 22.
  • the base body 24 has a first partial body 24' and a second partial body 24" which is detachably connected to the first partial body 24'.
  • the abrasive coating 32 is arranged on the first partial body 24'.
  • the brush 34 is arranged on the second partial body 24".
  • the first partial body 24' is screwed to the second partial body 24".
  • the first partial body 24' can also be non-detachably connected to the second partial body 24".
  • the first partial body 24 ' is designed in the shape of a ring in the present case, but in other exemplary embodiments it can also be designed in the shape of a disk or plate.
  • the second partial body 24" is pot-shaped or bell-shaped.
  • a tool interface 18 for connecting the combined grinding and brushing device 10 to the machine tool 100.
  • a separate tool interface as an additional component can be dispensed with, in which case the combined grinding and brushing device 10 is directly connected to the tool interface 18 provided on the second partial body 24" of the base body 24 on the machine tool 100 , for example by means of mounting screws 54.
  • the base body 24 preferably has fastening holes 56. In other words, this means that in this embodiment the base body 24 forms the cup wheel.
  • the brush 34 is attached to the base body 24 by several screws 58, which enables the brush 32 to be reversibly released and replaced.
  • Fig. 27-30 show a seventh exemplary embodiment of the combined grinding and brushing device 10 according to the invention.
  • the base body 24 is essentially bell-shaped in its entirety to the base body 24 of the sixth exemplary embodiment and also has the first partial body 24 'and the second partial body 24".
  • the first partial body 24' is not detachably welded to the second partial body 24".
  • the base body 24 can also be made in one piece and have a bell or top shape. This means that a bell-shaped or cup-shaped design of the base body 24 does not require that the base body has the two partial bodies 24 ', 24".
  • the free ends 50 of the brush elements 46 again lie on a lateral surface 52 which runs parallel to the axis of rotation 22 and extends in the circumferential direction around the axis of rotation 22.
  • the first level E1 is aligned orthogonally to the lateral surface 52.
  • the brush 34 or at least some of the brush elements 46 of the brush 34 are in the radial direction directed outwards and protrude from the base body 24.
  • the free ends 50 of the brush elements 46 thus protrude beyond the outer edge 40 of the base body 24 in the radial direction.
  • the second area 44 is opposite the first area 42 in the axial direction in comparison to the second exemplary embodiment (see Fig. 7-10 ) further apart, which is due in particular to the dimensions of the base body 24.

Landscapes

  • 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 (15)

  1. Dispositif combiné de meulage et de brossage (10) qui définit un axe de rotation (22) sur lequel le dispositif combiné de meulage et de brossage (10) tourne lorsqu'il est utilisé, le dispositif combiné de meulage et de brossage (10) comporte un corps de base (24) qui est sensiblement en forme de disque, d'anneau, de plaque ou de cloche et qui s'étend dans une direction circonférentielle autour de l'axe de rotation (22),
    le corps de base (24) comportant dans une première zone annulaire (42) un revétement abrasif (32) qui est disposé directement sur le corps de base (24) et qui s'étend au moins partiellement autour de l'axe de rotation (22) dans la direction circonférentielle, et
    le corps de base (24) comportant dans une deuxième annulaire (44), espacée de la première zone (42) ou adjacente à celle-ci, une brosse (34) qui est disposée directement sur le corps de base (24),
    la brosse (34) comportant une pluralité d'éléments de brosse (46) qui sont chacun fixés au corps de base (24) par une première extrémité (48) et qui font chacun saillie du corps de base (24) par une extrémité libre (50) opposée à la première extrémité (48) de manière à ce que les extrémités libres (50) entrent en contact lors du brossage d'une pièce (12) avec la surface à brosser de la pièce (12) et la brosse s'étendant dans la direction circonférentielle au moins partiellement autour de l'axe de rotation (22),
    la deuxième zone annulaire (44) étant disposée sur une surface latérale, orientée transversalement à la première zone annulaire (42), sur le bord intérieur ou extérieur du corps de base (24) ou étant décalée par rapport à la première zone annulaire (42) dans la direction axiale le long de l'axe de rotation (22),
    caractérisé en ce que la brosse (34) comporte une pluralité de sous-brosses (34a, 34b) qui sont disposés sous forme de différents segments, espacés les uns des autres le long de la direction circonférentielle, dans la deuxième zone (44) sur le dispositif combiné de meulage et de brossage (10).
  2. Dispositif combiné de meulage et de brossage selon la revendication 1, le corps de base (24) étant conçu d'une seule pièce avec la première zone (42) et la deuxième zone (44).
  3. Dispositif combiné de meulage et de brossage selon la revendication 1, le corps de base (24) comportant une première partie de corps (24') et une deuxième partie de corps (24") reliée à la première partie de corps (24'), le revêtement abrasif (32) étant disposé sur la première partie de corps (24') et la brosse (34) étant disposée sur la deuxième partie de corps (24").
  4. Dispositif combiné de meulage et de brossage selon la revendication 3, la première partie de corps (24') étant conçue sous la forme d'un disque, d'un anneau ou d'une plaque, et la deuxième partie de corps (24") étant en forme de pot ou en forme de cloche, et une interface d'outil (18) destinée à relier le dispositif combiné de meulage et de brossage (10) à une machine-outil (100) étant prévue sur la deuxième partie de corps (24").
  5. Dispositif combiné de meulage et de brossage selon l'une des revendications précédentes, le revêtement abrasif (32) comportant un matériau abrasif métallique et/ou minéral.
  6. Dispositif combiné de meulage et de brossage selon l'une des revendications précédentes, le corps de base (24) comportant une ouverture (36) s'étendant au centre autour de l'axe de rotation (22), une bordure intérieure (38) du corps de base (24), qui entoure l'ouverture (36), étant à une distance radiale de l'axe de rotation (22) plus petite qu'une bordure extérieure (40) du corps de base (24).
  7. Dispositif combiné de meulage et de brossage selon la revendication 6, un bord radialement extérieur du revêtement abrasif (32) affleurant la bordure extérieure (40) du corps de base (24).
  8. Dispositif combiné de meulage et de brossage selon l'une des revendications précédentes, le dispositif combiné de meulage et de brossage (10) étant à symétrie de rotation par rapport à l'axe de rotation (22).
  9. Dispositif combiné de meulage et de brossage selon l'une des revendications précédentes, la première zone (42) étant à une première distance radiale (d1) de l'axe de rotation (22) et la deuxième zone (44) étant à une deuxième distance radiale (d2) de l'axe de rotation, la première distance (d1) n'étant pas égale à la deuxième distance (d2).
  10. Dispositif combiné de meulage et de brossage selon l'une des revendications précédentes, une zone efficace du revêtement abrasif définissant un premier plan (E1) qui est orienté transversalement à l'axe de rotation (22).
  11. Dispositif combiné de meulage et de brossage selon la revendication 10, au moins une partie des extrémités libres (50) étant située dans un deuxième plan (E2) qui est parallèle au premier plan (E1).
  12. Dispositif combiné de meulage et de brossage selon la revendication 11, le premier plan (E1) étant décalé par rapport au deuxième plan (E2) le long de l'axe de rotation (22).
  13. Dispositif combiné de meulage et de brossage selon la revendication 10, au moins une partie des extrémités libres (50) étant située sur une surface latérale (52) qui est orientée transversalement au premier plan (E1).
  14. Dispositif combiné de meulage et de brossage selon la revendication 13, la surface latérale (52) étant orientée parallèlement à l'axe de rotation (22) et orthogonalement au premier plan (E1).
  15. Machine-outil (100) destinée à usiner une pièce (12) avec un dispositif combiné de meulage et de brossage (10) selon l'une des revendications 1 à 14.
EP20730982.4A 2019-05-20 2020-05-20 Dispositif combiné de meulage et de brossage Active EP3787835B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019113317.3A DE102019113317A1 (de) 2019-05-20 2019-05-20 Kombinierte Schleif- und Bürstenvorrichtung
PCT/EP2020/064065 WO2020234346A1 (fr) 2019-05-20 2020-05-20 Dispositif combiné de meulage et de brossage

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EP3787835A1 EP3787835A1 (fr) 2021-03-10
EP3787835C0 EP3787835C0 (fr) 2023-12-20
EP3787835B1 true EP3787835B1 (fr) 2023-12-20

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DE (1) DE102019113317A1 (fr)
WO (1) WO2020234346A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH686349A5 (de) * 1992-02-10 1996-03-15 Agathon Ag Maschf Schleifmaschine zum Umfangs- und Fasenschleifen von Schneidplatten, insbesondere Wendeschneidplatten
JP2000246653A (ja) * 1999-02-24 2000-09-12 Amada Co Ltd バリ取り具
US20030190874A1 (en) * 2002-04-02 2003-10-09 So Joseph K. Composite conditioning tool
US7033253B2 (en) * 2004-08-12 2006-04-25 Micron Technology, Inc. Polishing pad conditioners having abrasives and brush elements, and associated systems and methods
JP4553880B2 (ja) * 2006-09-21 2010-09-29 株式会社ノリタケスーパーアブレーシブ フライス工具
US7815495B2 (en) * 2007-04-11 2010-10-19 Applied Materials, Inc. Pad conditioner
JP2011051028A (ja) * 2009-08-31 2011-03-17 Nippon Electric Glass Co Ltd 研削方法、面取りガラス板の製造方法及び研削装置
TWM417989U (en) * 2011-01-28 2011-12-11 Green Energy Technology Inc Grinding mechanism
DE102015224407A1 (de) * 2015-12-07 2016-03-03 Carl Zeiss Smt Gmbh Reparaturverfahren für einen wafer chuck

Also Published As

Publication number Publication date
EP3787835C0 (fr) 2023-12-20
EP3787835A1 (fr) 2021-03-10
DE102019113317A1 (de) 2020-11-26
WO2020234346A1 (fr) 2020-11-26

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