EP3787835A1 - Combined grinding and brushing device - Google Patents
Combined grinding and brushing deviceInfo
- Publication number
- EP3787835A1 EP3787835A1 EP20730982.4A EP20730982A EP3787835A1 EP 3787835 A1 EP3787835 A1 EP 3787835A1 EP 20730982 A EP20730982 A EP 20730982A EP 3787835 A1 EP3787835 A1 EP 3787835A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brush
- combined grinding
- base body
- axis
- grinding
- 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.)
- Granted
Links
- 238000000227 grinding Methods 0.000 title claims abstract description 175
- 230000001680 brushing effect Effects 0.000 title claims abstract description 142
- 238000000576 coating method Methods 0.000 claims description 46
- 239000011248 coating agent Substances 0.000 claims description 45
- 238000003754 machining Methods 0.000 claims description 14
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 239000003082 abrasive agent Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 description 34
- 238000012545 processing Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 13
- 238000002360 preparation method Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000005422 blasting Methods 0.000 description 6
- 238000005498 polishing Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 235000013358 Solanum torvum Nutrition 0.000 description 1
- 240000002072 Solanum torvum Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000005068 cooling lubricant Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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 which defines an axis of rotation about which the combined grinding and brushing device is rotated in use.
- the present invention relates to a machine tool for machining workpieces with the aid of the combined grinding and brushing device according to the invention.
- Grinding wheels are used in the processing industry, for example. For edge and
- the grinding disks used to machine these hard materials usually have diamond and / or CBN-containing grinding materials as the grinding material, the hardness of which is greater than the hardness of the material to be machined.
- Exemplary workpieces to be machined, in which an edge and surface Machining is carried out by grinding, are hard metal indexable inserts, which are mostly made from sintered blanks. These hard metal indexable inserts are preferably ground on fully automatic CNC peripheral grinding machines in such a way that sharp and sharp edges can be produced.
- grinding machines designed specifically for indexable insert manufacture are mostly used in the grinding machining process.
- Such grinding machines are from various manufacturers, e.g. from Agathon AG (https: // a ), offered.
- a large number of grinding wheels are also available on the market from these manufacturers, which, for example, are designed with special diamond or CBN grinding rings and are preferably available in a diameter range of 250 to 400 mm.
- slip rings are usually set up to the peripheral surfaces as well as the
- edge preparation Due to the aforementioned problem, it is therefore necessary to increase the stability and thus the stability of the cutting edges for the later machining of workpieces.
- This additional processing step is generally referred to as edge preparation.
- the edge preparation has the advantage that an additional coating (e.g. a CBN coating) applied to the cutting inserts develops a better adhesive effect on the edges optimized by the edge preparation.
- an additional coating e.g. a CBN coating
- they are rounded (rounded off) by an additional processing step of brushing, blasting or drag grinding.
- indexable inserts The indexable inserts to be machined are threaded onto a rod via a preferably present central bore in the indexable inserts, a predetermined distance being maintained between the threaded indexable inserts.
- spacer bushings or spacers are usually used, each of which is threaded between two adjacent indexable inserts.
- a rod equipped in this way is clamped onto a so-called planet wheel below. Then, depending on the result to be achieved, the nozzles of the automatic wet blasting machine are set at a predetermined angle to the cutting edges of the indexable inserts to be blasted.
- 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-aluminum oxide mixture jet at a predetermined pressure at the cutting edges to be blasted.
- the cutting edges are rounded off by high pressure irradiation.
- Indexable inserts are moved past a rotating brush by hand at a specific setting angle and contact pressure. Due to this manual processing, the properties of the cutting edges and surfaces to be achieved are sometimes very different, whereby, for example, the processing result depends directly on a variation in the contact pressure, the angle of attack and the contact time between the brush and the workpiece. Thus, the quality of the machined surface or cutting edge can vary, for example, depending on the skills of the operator, which is noticeable for an end customer in a variation in the wear resistance or service life of the indexable insert.
- the deburring of components is another field of application of brushes that is worth mentioning.
- materials that are particularly prone to burr formation e.g. molybdenum
- the deburring requires a much higher expenditure of time compared to the edge preparation.
- machine brushing or robot-controlled brushing is used, for example, in the production of large series.
- the workpieces to be machined are placed in devices specially developed for this purpose, these devices being custom-made products that only fit a certain type of indexable insert and are only suitable for a certain type of edge preparation are 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 mechanical brushing.
- a new device must be developed and manufactured for every customer request with regard to a special edge preparation, which causes high overall development and production costs for the devices.
- Additives such as polishing paste or polishing wax, must 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 cutting plates or workpieces afterwards in order to remove the polishing paste or the polishing wax. This in turn results in increased labor and material costs.
- Robot-controlled brushing in which the to be processed
- robot-controlled brushing systems are only suitable for manufacturing companies with very large quantities, for example when 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 the robot arm may have to be reprogrammed depending on the type of edge preparation and the type of indexable insert.
- a further processing step of brushing is generally necessary in order to ensure a desired surface or cutting edge quality and wear resistance for the end customer.
- the previously known Bürstver drive and devices each show a variety of disadvantages, which must be overcome based on the prior art.
- the object is achieved by a combined grinding and
- the base body is essentially designed in the shape of a disk, ring, plate, pot or bell and extends in a circumferential direction around the axis of rotation.
- the base body has an abrasive coating which is arranged directly on the base body and extends in the circumferential direction at least partially around the axis of rotation.
- the main body has a brush in a second area spaced apart from the first area or adjoining it, which is arranged directly on the main body and extends in the circumferential direction at least partially around the axis of rotation.
- the brush is preferably an abrasive brush.
- the object according to the invention is achieved by a machine tool
- a rotary grinding machine for machining a workpiece with the combined grinding and brushing device according to the invention.
- Brushing device is that by arranging a brush on the combined grinding and brushing device, the originally separate working steps of grinding and subsequent brushing takes place.
- the edge preparation process which originally took place after a grinding process and was carried out on a separate machine, is now integrated into the grinding process.
- a brush in addition to the abrasive coating provided in the first area of the base body, a brush is provided which is arranged in the second area of the base body. This means that brushing can be carried out immediately after the grinding process on the same (turning) grinding machine, i.e. using the same tool, possible.
- Brushing device for grinding and brushing the result is that additional transport routes, which for example harbor a risk of transport damage, can now be omitted.
- the workpiece to be machined (for example an indexable insert) can be clamped once on the machine tool for machining and first machined by grinding in a first partial work step.
- the workpiece can be brushed without the need for unclamping or reclamping and transport.
- the change between grinding and brushing is preferably done only by adjusting (for example by moving along an axis of movement of the machine tool) of 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 process of machining the workpiece ensures a constant quality independent of the quantity due to the combined tool.
- the quality of the brushing is no longer dependent on an operator, as mentioned above, but can take place unmanned in the case according to the invention. This leads in particular to economic production advantages.
- Another advantage is that the inventive combined grinding and
- Brushing device can be used, for example, on a CNC-controlled peripheral grinding machine for processing components and workpieces, with the inventive combination of abrasive coating and brush on the same base body of the combined grinding and brush device processing of the workpieces always at the same angle, pressure and below constant processing time can take place.
- this has the advantage that, for example, there are no quality deviations due to different processing times, different angles of attack and different contact pressures that occurred during manual brushing.
- a machine tool preferably a CNC-controlled
- Peripheral grinding machine a large number of working parameters, in which the brush can be operated, can be influenced via a (CNC) control.
- CNC CNC
- the speed at which the slip ring rotates around its axis of rotation on the peripheral grinding machine can be varied, so that the shape and execution of the rounded edge can be influenced during brushing.
- the brush according to the invention preferably has a dimension specially adapted to the dimensions of the combined grinding and brushing device or the second area of the combined grinding and brushing device, through which a simple attachment of the brush directly in the second area of the base body of the combination ned grinding and brushing device is simplified.
- the brush is preferably designed as an abrasive brush.
- the brush according to the invention preferably has the technically customary properties of conventional ones available on the market Brushes for processing workpieces. It is also advantageous that the brush or the individual brush elements (ie the brush set) have a chemical resistance to the cooling lubricants (for example emulsions or special grinding oils) used in a conventional grinding process.
- disk-shaped, ring-shaped or plate-shaped is understood in the present case to mean that the base body preferably has the geometric shape of a disk, a ring or a plate.
- 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 also only correspond to a partial area of a pot or a bell.
- a “disk” is understood to mean a geometric body in the form of a cylinder, the radius of which is many times greater than its thickness.
- the disk-shaped base body preferably has a concentric opening, in other words it is preferably configured as a hollow cylinder.
- annular base body can also be a
- the base body is preferably annular in each cross section. However, its outside and / or inside 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 to be “essentially ring-shaped” here.
- a plate-shaped configuration of the base body is to be understood, for example, as a continuously configured, preferably cylindrical, plate by which the combined grinding and brushing device is formed.
- the base body usually has a somewhat more complex geometry and is not strictly disc-shaped, ring-shaped, plate-shaped, pot-shaped or bell-shaped. In the present case it is therefore called “Essentially disc, ring, plate, pot or bell-shaped”, which is intended to express that the basic geometry of a disc, ring, plate, pot or bell corresponds or at least resembles the overall geometry
- the base body can at least partially deviate therefrom.
- first area and second area are understood to mean two areas which are arranged separately from one another on the base body and 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 distant from this.
- a configuration is therefore explicitly excluded 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 main body is together with the first area and the second
- 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 are created directly by the manufacture of the base body and are not attached to it separately.
- 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.
- the two partial bodies can also be connected to one another in a non-releasable manner, for example by gluing, welding or soldering.
- the geometry of the two part bodies can vary differ, with the geometry of the base body according to the overall impression
- the first part of the body is disk, ring, or
- a tool interface for connecting the combined grinding and brushing device to a machine tool is provided on the second part of the body.
- the geometry of the base body is still essentially pot-shaped or bell-shaped according to the overall impression, since the disk-shaped, ring-shaped or plate-shaped configuration of the first part-body in the connected state of the two part-bodies is integrated into the substantially pot-shaped or bell-shaped means is not highlighted by this.
- the abrasive coating has a metallic and / or
- relevant parameters such as the concentration of the cutting material, e.g. represented by predetermined diamond or CBN grain types, and / or optimized by the choice of certain bonding materials so that they are suitable, for example, for grinding a certain hard metal material of the workpiece to be machined.
- the use of the grinding 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, 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.
- the cross-sectional shape is preferably circular, that is to say has a smaller inner circle diameter than the outer circle diameter. In other words, that 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, for example, tapered designs with respect to the axis of rotation, i.e. Includes hollow cone-like or truncated cone-like designs of the base body.
- a radially outer edge of the abrasive coating ends flush with the outer edge of the base body.
- the base body is preferably circular and has the same distance from the axis of rotation, which defines that the abrasive coating arranged in the first area does not protrude with its outer edge over the base body of the combined grinding and brushing device in the radial direction.
- the first area of the base body is preferably an annular area, the inside diameter of which is larger than the inside diameter of the base body and the outside diameter of which corresponds to the outside diameter of the base body.
- Brushing device rotationally symmetrical to the axis of rotation.
- rotationally symmetrical here includes both rotationally symmetrical
- a rotationally symmetrical design of the combined grinding and brushing device since with a rotationally symmetrical design the individual finished operations can be carried out in a simplified manner.
- 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 the combined grinding and brushing device in every position for use, ie for processing the workpiece, it is settable.
- the first area has a first radial distance from the axis of rotation and the second area 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 therefore do not overlap, that is to say are 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 work steps of grinding and brushing are clearly separated from one another by the geometric arrangement of the abrasive 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 axis of movement of the machine tool.
- an effective area of the abrasive coating defines a first one
- the first plane is oriented orthogonally to the axis of rotation.
- transversely is understood here to mean any orientation that is not parallel. This includes, but is not limited to, an orthogonal alignment. “Cross” should therefore not be confused with “vertical”, but rather means an orientation at an angle other than 0 °.
- effective area refers to the area of the abrasive coating
- This formulation includes that the abrasive coating has individual grains that protrude in the direction of 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 processed.
- the brush has at least a first part brush and a second part brush which are arranged in different segments along the circumferential direction in the first area on the combined grinding and brushing device.
- the segmentation of 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 brush device is simplified, since the brushes do not have to be manufactured to fit the second area.
- the brush is thus composed of individual brush sections or segments, as seen along the circumferential direction, which are preferably arranged in the second area at a distance from one another in the circumferential direction.
- the brush has a plurality of one another
- spaced brush elements which are each fastened with a first end to the base body and with a second end opposite the first end protrude from the base body in such a way that the free ends come into contact with the surface of the workpiece to be brushed during brushing of a workpiece to step.
- a continuous block is to be understood, but that a brush consists of a large number of brush elements ("brush hairs") that are separated from one another.
- the Bürstenele elements are preferably made of metal (e.g. steel) or nylon. Starting from the second area of the base body, the individual Bürstenele elements do not necessarily have to be aligned in the same direction, i.e. parallel to one another. but can also be different angles of inclination to one another, for example
- At least some of the free ends of the brush lie in a second plane which is parallel to the first plane in which the active area of the abrasive coating lies.
- the brush and the abrasive coating are therefore parallel to one another
- the workpiece to be processed and / or the combined grinding and Bürstenvor direction must therefore only be adjusted along one axis, for example in the radial direction.
- the first plane is offset from the second plane along the axis of rotation.
- the brush and abrasive coating are thus arranged parallel to one another but offset from one another along the axis of rotation.
- the workpiece to be processed and / or the combined grinding and brushing device must therefore be adjusted along two axes, for example in the radial direction and axial direction.
- the abrasive coating can be on a circular ring
- the brush can be arranged cross-sectional area of the base body.
- the brush can be arranged on a lateral surface oriented transversely to the annular surface on the inner or outer edge.
- the lateral surface is preferably aligned parallel to the axis of rotation and orthogonally to the first plane.
- the abrasive coating is in this Ausgestal device on one face of the combined grinding and brush Arranged device, which is oriented orthogonally to the axis of rotation, whereas the
- Brush is arranged on an inner or outer edge of the combined grinding and Bürstenvor direction, which is aligned parallel to the axis of rotation.
- the brush elements are at least partially directed radially inwards or outwards.
- the brush is releasably attached to the base body.
- This embodiment has the particular advantage that the releasable attachment of the brush covering to the base body means that it can be replaced after a defined period of use or wear, regardless of the service life of the abrasive covering. This means that the abrasive coating can be changed independently of changing the brush, which means that the maximum service life can be guaranteed in both cases.
- the brush is materially bonded to the base body
- Brush is exposed to strong shear forces (i.e. strong forces orthogonal to the longitudinal orientation of the individual brush elements) during use 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 integral with the base body
- Such an integral connection between the base body and the abrasive coating can be achieved, for example, by the sintering process, a mixture of substances which forms the abrasive coating being connected to the base body by sintering.
- the base body is made entirely from the mixture of substances used for grinding, for example by means of a sintering process, in which case the abrasive coating is an integral part of the base body.
- FIG. 1 shows an exemplary embodiment of a machine tool for machining a workpiece with a first exemplary embodiment of the combined grinding and brushing device according to the invention
- FIG. 2 shows a detailed view of the machine tool shown in FIG. 1;
- FIG. 3 shows a sectional view of the first exemplary embodiment of the combined grinding and brushing device according to the invention
- FIG. 4 shows a front view of the first exemplary embodiment of the combined grinding and brushing device
- Fig. 5 is a perspective view of the first embodiment of the combined grinding and brushing device
- FIG. 6 shows a detailed view of the sectional view shown in FIG. 3 of the first exemplary embodiment of the combined grinding and brushing device
- 7 shows a sectional view of a second exemplary embodiment of the combined grinding and brushing device according to the invention
- FIG. 8 shows a plan view of the second exemplary embodiment of the combined grinding and brushing device
- Fig. 9 is a perspective view of the second embodiment of the combined grinding and brushing device.
- Fig. 10 is a detailed view of the sectional view shown in Fig. 7 of the second Auspar approximately example of the combined grinding and brushing device;
- FIG. 11 shows a sectional view of a third exemplary embodiment of the combined grinding and brushing device according to the invention.
- Fig. 12 is a plan view of the third embodiment of the combined grinding and
- Fig. 13 is a perspective view of the third embodiment of the combined grinding and brushing device
- FIG. 14 shows a detailed view of the sectional view shown in FIG. 11 of the third exemplary embodiment of the combined grinding and brushing device
- FIG. 15 shows a sectional view of a fourth exemplary embodiment of the combined grinding and brushing device according to the invention.
- FIG. 16 shows a plan view of the fourth exemplary embodiment of the combined grinding and brushing device
- Fig. 17 is a perspective view of the fourth embodiment of the combined grinding and brushing device
- FIG. 18 shows a detailed view of the sectional view shown in FIG. 15 of the fourth exemplary embodiment of the combined grinding and brushing device
- FIG. 19 shows a sectional view of a fifth exemplary embodiment of the combined grinding and brushing device according to the invention.
- 21 is a perspective view of the fifth embodiment of the combined grinding and brushing device.
- FIG. 22 shows a detailed view of the sectional view shown in FIG. 19 of the fifth exemplary embodiment of the combined grinding and brushing device
- FIG. 23 shows a sectional view of a sixth exemplary embodiment of the combined grinding and brushing device according to the invention.
- FIG. 24 shows a plan view of the sixth exemplary embodiment of the combined grinding and brushing device
- Fig. 25 is a perspective view of the sixth embodiment of the combined grinding and brushing device.
- FIG. 26 shows a detailed view of the sectional view of the sixth shown in FIG. 23
- Embodiment of the combined grinding and brushing device shows a sectional view of a seventh exemplary embodiment of the combined grinding and brushing device according to the invention.
- 29 is a perspective view of the seventh embodiment of the combined grinding and brushing device.
- FIG. 30 shows a detailed view of the sectional view of the seventh exemplary embodiment of the combined grinding and brushing device shown in FIG. 27.
- FIG. 1 shows a machine tool with an exemplary embodiment of a
- the combined grinding and brushing device according to the invention is identified by the reference number 10.
- the machine tool 100 is preferably one
- Peripheral grinding machine more preferably a CNC-controlled peripheral grinding machine that is used for machining workpieces.
- a workpiece 12 to be machined is represented by an indexable insert 12 which is spiked onto a workpiece carrier 14 of the machine tool 100.
- the indexable insert 12 is mounted on 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 insert 12 is set at a predefined setting angle relative to the combined grinding and brushing device 10 in order to enable a predefined machining of the cutting edges 16 of the indexable 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 the machining, 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 designed in the shape of a disk, ring or plate.
- the base body 24 is designed essentially in the shape of a ring or disk. More precisely, it has the shape of a hollow truncated cone.
- the base body 24 can, for example, be made of a metallic material.
- the grinding layer 32 is in the case shown in FIGS Grinding and brushing device 10 is provided, the precise positioning of the Schleifbe lay 32 in the description of Fig. 3-6 will be discussed in more detail.
- a brush 34 is arranged on the base body 24, on the exact
- the machine tool 100 can preferably be moved via a control unit (not shown) at least along a first axis of movement 26 in order to enable relative adjustment with respect to the workpiece 12, at least along the first axis of movement 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 move with respect to the combined grinding and brushing device 10 be moved along at least one direction of movement.
- an electric motor can be used, for example, which is preferably controllable over a large speed range.
- Indexable insert 12 positioned along first axis of movement 26 such that cutting edge 16 of indexable insert 12 can be brushed by brush 34 arranged on base body 24 of combined grinding and brushing device 10.
- the 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 insert 12 is positioned along the first axis of movement 26 such that it can come into contact with the abrasive coating 32.
- Fig. 3 to 6 is a first embodiment of the combined according to the invention
- the combined grinding and brushing device 10 is in the present case designed to be rotationally symmetrical to the axis of rotation 22.
- the base body is essentially disk-shaped or ring-shaped, that is to say 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 in the shape of 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 extending around the axis of rotation 22 has a first region 42 and a second region 44 spaced apart from the first region 42.
- the first area 42 is at a first radial distance ri from the axis of rotation 22.
- the second area 44 is at a second distance r 2 from the axis of rotation 22, where ri is greater than r 2 .
- the abrasive coating 32 is arranged in the first region 42 of the base body 24.
- the brush 34 is arranged in the second region 44 of the base body 24.
- the abrasive coating 32 is according to the first exemplary embodiment accordingly further outwards 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 area 44 in which the brush 34 is arranged, is also designed as an annular surface in the first exemplary embodiment, which is set back in the axial direction to the axis of rotation 22 compared to the annular surface of the first area 42.
- the abrasive coating 32 is designed as a continuous circular ring-shaped block, which preferably has a metallic and / or mineral abrasive material. It ends flush with the outer border 40 of the base body 24 and has an active area which comes into contact with a surface of this workpiece 12 when a workpiece 12 to be machined is being ground.
- This effective area defines a first plane E1 which is oriented transversely, in the present case orthogonally, to the axis of rotation 22.
- the working area of the abrasive coating 32 and thus the plane E1 defined by it to be 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.
- the brush 34 has, more precisely, a plurality of first and second partial brushes 34a, 34b which are each segmented in the second area 44 along the circumferential direction.
- the brush 34 or the part brushes 34a, 34b has or have a plurality of
- 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 protrudes 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 while the workpiece 12 is being brushed.
- the surface of the workpiece 12 to be brushed can be, for example, the cutting edge 16 shown in FIG.
- the brush 34 or the partial brushes 34a, 34b can, for example, be connected to the base body 24
- this second level E2 is equivalent to the first level E1.
- Brush 34 and abrasive coating 32 are thus arranged next to one another and the free ends 50 of the plurality of brush elements 46 are at the same height as the effective area of abrasive coating 32 with respect to the axial direction defined by the axis of rotation 22 be offset from one another along the axis of rotation 22.
- both planes E3 and E4 are oriented orthogonally to the axis of rotation 22 in the first exemplary embodiment.
- Fig. 7-30 are six further embodiments of the invention.
- the brush 34 has at least the first and 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 jacket surface is an outer jacket surface of the base body 24.
- a third embodiment of the slip ring 10 according to the invention is shown.
- the brush 34 or the at least two partial brushes 34a, 34b is arranged on a lateral surface.
- the outer surface defined by the second region 44 is provided on the inside of the circular or hollow truncated cone-shaped base body 24, i.e. forms an inner surface of the base body 24.
- At least some of the free ends 50 of the brush 34 are also located on a radially inwardly directed outer surface.
- the brush 34 or the Brush elements 46 of the brush 34 are thus in the radial direction towards the inside
- Embodiment is similar, wherein in the fourth embodiment the base body 24 is modified compared to the first embodiment in such a way that the second region 44 is set back from the first region 42 in the axial direction to the axis of rotation 22 by a greater distance than in the first embodiment.
- the third level E3 is at a greater distance from the fourth level E4 compared to the first exemplary embodiment.
- the third plane E3 is aligned parallel to the fourth plane E4 and orthogonal to the axis of rotation 22.
- first region 42 is offset from the second region 44, for example by 6 mm further than in the first exemplary embodiment, in the axial direction relative to the axis of rotation 22.
- Embodiment in relation to the axial direction to the axis of rotation 22 flush with the active area of the abrasive coating 32. I.e. in other words, that the first plane E1 and the second plane E2 are axially at the same height with respect to the axis of rotation 22.
- the brush 34 is arranged in a manner similar to that of the first and fourth exemplary embodiments.
- the brush 34 has, in contrast to this, 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 along a first circle, essentially at equal distances from one another.
- the cylindrical brush elements 46 are arranged along a second circle, essentially at equal distances from one another.
- the first circle has a larger diameter than the second circle.
- the brush elements 46 of the first part brush 34a are rotated by an angle around the axis of rotation 22 with respect to the brush elements 46 of the second part brush 34b in such a way that one brush element 46 of the first part brush 34a is arranged between two brush elements 46 of the second part 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 part brushes 34a, 34b are not arranged here, as before, offset from one another in segments along the circumferential direction, but rather offset radially from one another.
- the base body 24 is in
- the base body 24 has a bell-like configuration with an opening 36 which again runs concentrically around the axis of rotation 22 and has a smaller diameter in comparison to the first to fifth exemplary embodiments.
- the shape of the bell-like or cup-shaped base body 24 is thus still essentially ring-shaped in a cross section orthogonal to the axis of rotation 22.
- the base body 24 in the present case has a first part body 24 ‘and a second part body 24 ′′ which is detachably connected to the first part body 24‘.
- the abrasive coating 32 is arranged on the first part body 24 '.
- the brush 34 is arranged on the second part body 24 ′′.
- the first part body is screwed to the second part body 24 ′′ by 24.
- the first partial body 24 ' can also be connected to the second partial body 24' in a non-detachable manner.
- inventions can also be designed in the form of a disk or plate.
- the second part body 24 ′′ is pot-shaped or bell-shaped.
- Brush device 10 is provided on machine tool 100.
- the base body 24 can, for example. On a separate
- Tool interface can be dispensed with as an additional component, in such a case the combined grinding and brush device 10 can be fastened directly to the tool interface 18 provided on the second part body 24 ′′ of the base body 24, for example by means of assembly screws 54.
- the base body 24 it preferably has fastening bores 56.
- the base body 24 forms the cup wheel.
- the brush 34 is fastened to the base body 24 by a plurality of screws 58, whereby a reversible loosening and replacement of the brush 32 is made possible.
- 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 part body 24 'and the second part body 24 ′′.
- the first part body 24 is not releasably welded to the second part 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 pot-shaped configuration of the base body 24 does not require the base body to have the two sub-bodies 24 ‘, 24 ′′.
- At least part of the free ends 50 is the
- Brush elements 46 run on a lateral surface 52 parallel to the axis of rotation 22, which extends in the circumferential direction around the axis of rotation 22.
- the first plane E1 is oriented 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 border 40 of the base body 24 in the radial direction.
- the second region 44 is further spaced apart from the first region 42 in the axial direction compared to the second exemplary embodiment (see FIGS. 7-10), which is due in particular to the dimensioning of the base body 24.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019113317.3A DE102019113317A1 (en) | 2019-05-20 | 2019-05-20 | Combined grinding and brushing device |
PCT/EP2020/064065 WO2020234346A1 (en) | 2019-05-20 | 2020-05-20 | Combined grinding and brushing device |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3787835A1 true EP3787835A1 (en) | 2021-03-10 |
EP3787835B1 EP3787835B1 (en) | 2023-12-20 |
EP3787835C0 EP3787835C0 (en) | 2023-12-20 |
Family
ID=71016483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20730982.4A Active EP3787835B1 (en) | 2019-05-20 | 2020-05-20 | Combined grinding and brushing device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3787835B1 (en) |
DE (1) | DE102019113317A1 (en) |
WO (1) | WO2020234346A1 (en) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH686349A5 (en) * | 1992-02-10 | 1996-03-15 | Agathon Ag Maschf | Grinding machine for circumferential and Chamfer grinding of cutting inserts, in particular indexable inserts |
JP2000246653A (en) * | 1999-02-24 | 2000-09-12 | Amada Co Ltd | Deburring tool |
AU2003218477A1 (en) * | 2002-04-02 | 2003-10-20 | Rodel Holdings, Inc. | 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 (en) * | 2006-09-21 | 2010-09-29 | 株式会社ノリタケスーパーアブレーシブ | Milling tools |
US7815495B2 (en) * | 2007-04-11 | 2010-10-19 | Applied Materials, Inc. | Pad conditioner |
JP2011051028A (en) * | 2009-08-31 | 2011-03-17 | Nippon Electric Glass Co Ltd | Grinding method, method for manufacturing chamfered glass plate, and grinding device |
TWM417989U (en) * | 2011-01-28 | 2011-12-11 | Green Energy Technology Inc | Grinding mechanism |
DE102015224407A1 (en) * | 2015-12-07 | 2016-03-03 | Carl Zeiss Smt Gmbh | REPAIR PROCEDURE FOR A WAFER CHUCK |
-
2019
- 2019-05-20 DE DE102019113317.3A patent/DE102019113317A1/en active Pending
-
2020
- 2020-05-20 EP EP20730982.4A patent/EP3787835B1/en active Active
- 2020-05-20 WO PCT/EP2020/064065 patent/WO2020234346A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP3787835B1 (en) | 2023-12-20 |
WO2020234346A1 (en) | 2020-11-26 |
DE102019113317A1 (en) | 2020-11-26 |
EP3787835C0 (en) | 2023-12-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1834731B1 (en) | Process of grinding cutting tools | |
EP2036675B1 (en) | Dressing gear and dressing tool for dressing of a toothed tool which is used for finish machining of workpieces, in particular gears | |
DE2748037A1 (en) | KNIFE HEAD FOR GEARING GEARS | |
WO2015166066A1 (en) | Tool | |
EP3592492B1 (en) | Tool for cutting teeth or for dressing a fine machining tool having a set of external teeth | |
DE3811784C2 (en) | ||
EP3787835B1 (en) | Combined grinding and brushing device | |
DE102013104875B3 (en) | Electrode grinding device | |
DE102016101525A1 (en) | Method for machining a tool edge of a cutting tool, brush and brush grinder | |
CH686349A5 (en) | Grinding machine for circumferential and Chamfer grinding of cutting inserts, in particular indexable inserts | |
DE202019104602U1 (en) | Combined grinding and brushing device | |
DE19833363B4 (en) | Method for turning rotational surfaces on workpieces, preferably on crankshafts, and disc-shaped tool for carrying out the method | |
EP3071356B1 (en) | Milling tool | |
DE19643192A1 (en) | Process for machining rotationally symmetrical workpiece surfaces and tool for carrying out such a process | |
DE68924614T2 (en) | Method and device for grinding the teeth of a cutting tool. | |
EP3507044B1 (en) | Single edge milling tool | |
WO2005095058A1 (en) | Grinding head for a grinding device | |
EP4025367B1 (en) | Method for restoring a ball track milling cutter | |
DE102007034140B4 (en) | repair tool | |
DE595280C (en) | Cylinder-filling jaw grinding tool for inner cylinder surfaces | |
DE10324432B4 (en) | Profile sharpened bar knife for the production of bevel and hypoid gears and method for profile sharpening of such a bar knife | |
WO2002058888A1 (en) | Dual-grinding method for bar blades and a grinding disc for carrying out said method | |
DE3817453C1 (en) | method and apparatus for the cylindrical-surface grinding of workpieces, in particular the rough-grinding thereof | |
DE4418605A1 (en) | Process for producing high quality bore surfaces in glass or ceramics | |
EP1577060B1 (en) | Notching tool |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
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 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20201130 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20230628 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502020006451 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
U01 | Request for unitary effect filed |
Effective date: 20240119 |
|
U07 | Unitary effect registered |
Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI Effective date: 20240129 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20240321 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20240321 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231220 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20240320 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231220 |
|
U20 | Renewal fee paid [unitary effect] |
Year of fee payment: 5 Effective date: 20240523 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20240420 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20240521 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20240602 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CZ Payment date: 20240514 Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231220 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231220 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231220 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20240420 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20231220 |