• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device (1) for grinding or polishing. The device (1) comprises a carrier material made of a polymer or a polymer mixture and abrasive particles (9a). The abrasive particles (9a) are distributed at least in a part of the carrier material. The device (1) has at least two regions (31a, 31b, 32a, 32b, 33a) with different proportions, in particular weight percent, or different distribution of the abrasive particles (9a).
    公开号:CH713243A2
    申请号:CH01466/17
    申请日:2017-11-30
    公开日:2018-06-15
    发明作者:Solenthaler Jürg
    申请人:Desisa Gmbh；
    IPC主号:
    专利说明:

    Description: The invention relates to a device for grinding or polishing and to a method for producing such a device. The invention also relates to a material cartridge.
    WO 2013/190 476 describes a carrier for the production of anchorless brush heads, in particular for toothbrushes. The carrier is provided for this purpose with blind holes for the insertion of cleaning elements and a recess for molding the brush head. The carrier can be made of various materials by rapid prototyping. For example, abrasion resistant materials such as ceramic, steel, plastic or synthetic resins can be used to make the backing. The cleaning elements, especially bristles, are made separately from natural fibers or synthetic fibers and then inserted into the blind holes. The bristles can also be inserted by direct injection molding in the blind holes. Afterwards, the brush head is cast onto the carrier using suitable casting methods and thus holds the bristles firmly without additional anchoring.
    However, this method has the disadvantage that it is associated with a high workload. To make the brush several steps are necessary. The individual parts must be joined together separately. Injection molding to make the bristles is not suitable for the use of abrasive materials as they can damage the spray nozzle.
    It is therefore an object of the invention to practice the disadvantages of the prior art.
    In particular, it is an object of the invention to provide a device for grinding and polishing available, which can be produced easily and without much labor. It is a further object of the invention to provide a method for the manufacture of such a device as well as a material cartridge.
    These objects are achieved by the defined in the independent claims devices and methods and material cartridge. Further embodiments emerge from the dependent claims.
    An aspect of the invention relates to a device for grinding or polishing. The device comprises a carrier material made of a polymer or a polymer mixture and abrasive particles. The abrasive particles are distributed at least in a part of the carrier material. The device has at least two regions which differ with regard to the abrasive particles. In particular, the regions may have different proportions, in particular in percent by weight, or different distributions of the abrasive particles or different sizes or materials of the particles.
    The areas with different proportion or different distribution of the abrasive particles, have different amounts of the abrasive particles in volume percent, weight percent, or mass fraction. In addition, the abrasive particles can differ in terms of size, shape and particle density.
    Preferably, the abrasive particles are in the at least a portion of the carrier material in an amount of 1 to 80 weight percent. Particularly preferred are amounts of 10-40 weight percent.
    It is also conceivable that the device has more than two areas with different proportion or different distribution of the abrasive particles. It is also possible for a part of the device to have at least one area without abrasive particles in addition to the at least two areas with abrasive particles.
    Such a device is characterized by a particularly high robustness. In addition, such a device is versatile. The composition of carrier material and abrasive particles can be adjusted according to the intended application.
    The device may comprise a fastening part and at least one grinding part. The grinding member may have a proximal end and a distal end. The proximal end connects to the attachment part. The at least two regions with different proportions or different distribution of the abrasive particles are preferably present in the grinding part. The attachment part may also have an area with a proportion or distribution of the abrasive particles. Alternatively, the attachment part is free of abrasive particles and consists of a polymer or polymer mixture.
    The device is characterized by the small number of individual components.
    Preferably, the grinding part at the distal end a higher proportion, in particular in percent by weight, or a higher distribution of the abrasive particles than at the proximal end. The proximal end preferably has a high proportion of the polymer or polymer mixture. The proximal end can thus flexibly connect to the fastening element. The increase in the proportion or distribution of the abrasive particles may be continuous, or areas of higher or higher distribution of the abrasive particles may alternate with regions of low level or low distribution of the abrasive particles. The amount of abrasive particles can be used to control the stiffness of the grinding part.
    It is also conceivable that a region between the proximal and the distal end, preferably centrally between both ends, the highest proportion or the highest distribution of the abrasive particles.
    The grinding part and the fastening part can be optimally adapted to the intended use. The grinding part is particularly robust and resistant and has a long service life.
    The attachment member may be a bristle holder and the abrasive member may be a bristle. It can also be provided several bristles. The bristles can have lengths between 0.5 and 100 mm. The bristles of a device can have both the same and different lengths. The diameter of the bristles is typically between 50 μm and 10 mm. The bristles of a device can have both the same and different diameters. The geometry of the bristle shape can be round, oval, rectangular, triangular, star-shaped or cross-shaped in cross section. Oval and round shapes may also have additional indentations. The bristle ends may have a planar termination, a planar inclined termination, or a concave or convex curvature. The bristles may be round bristles.
    The device may be a brush or a brush. Alternatively, however, the abrasive member may be a grinding wheel or a bonded abrasive.
    The device can be designed according to the intended use. Such a device is characterized in that it is suitable as a fine tool, for example for the processing of watch components or can also be used as a rough tool for the machining of machine parts.
    Advantageously, the device has at least one opening in the bristle direction. The opening is preferably arranged within the bristle. The opening has a diameter of 50 .mu.m to 4 mm.
    The openings may be configured as channels within the bristles that extend from the bristle holder to the bristle ends. It is also conceivable that the bristle holder has openings. The openings of the bristle holder may be connected to the openings within the bristles in a corresponding manner. Additionally or alternatively, it is also conceivable that the bristle holder has openings which are arranged between the bristles. The openings are suitable for passing a coolant or compressed air. The openings may be designed such that they can be arranged connectable to a coolant device or compressed air device.
    The openings have the advantage that the bristle holder and the bristles as well as the workpiece to be machined can be cooled during processing. Depending on the application, this can prevent overheating.
    Compressed air can also be used to remove, for example, chips that are formed during grinding.
    Preferably, the device is integrally formed. The fastening part and the at least one grinding part can be produced integrally, for example by means of a 3D printing process. In particular, laser sintering and the multi-jet fusion process are suitable for one-part training.
    3D printing methods are characterized in that individual and arbitrarily different shapes of three-dimensional objects can be generated. The objects can be generated with high precision and accuracy. The workload is low and the process fast. In addition, various materials can be used in the production of the three-dimensional objects, so that an optimal adaptation to the intended use can be made.
    The one-piece production is characterized by a fast production without high workload.
    Preferably, the device is at least partially laser sintered.
    An at least partially laser-sintered brush is simple and inexpensive to manufacture.
    Preferably, the polymer or polymer mixture is selected from the group: PEEK (polyetheretherketone); PUR (polyurethane); PA (polyamide); PP (polypropylene); POM (polyoxymethylene); PE (polyethylene); or combinations thereof.
    These polymers or polymer blends are particularly robust and resistant. At the same time, these materials give flexibility to the device. Thus, the grinding parts may for example be designed so that they can be deflected relative to the fastening part. In addition, such a device is resistant to many conventional chemicals, allowing a wide range of applications.
    The abrasive particles are preferably selected from the group: carbide, in particular silicon carbide; Glass, diamond, corundum; Cubic boron nitride; Metal oxide, especially alumina; alumina; diatomaceous earth; Polishing earth; Polishing slate; whiting; or combinations thereof.
    By the use of abrasive particles, the device is particularly suitable for use as a tool for the mechanical machining of workpieces. The device is resistant to wear. The life of the device is increased.
    The abrasive particles have an average particle size of 0.5 to 500 pm. Particularly preferred are average particle sizes of 50 to 150 pm. The polymer or polymer mixture particularly preferably has average particle sizes of from 20 to 80 .mu.m, and the abrasive particles most preferably have average particle sizes of from 50 to 60 .mu.m.
    It is also conceivable that nanoparticles with average particle sizes of 1 nm-1 pm are used. For example, nano-diamond particles can be used.
    With respect to abrasives, it is also common to specify the grain size. The number of grains is based on the unit of mesh, the number of meshes per net (25.4 mm). The larger the number the finer the grain. The mean particle size of grain 180 is about 80 pm.
    By choosing the particle size of the abrasive particles, the device can be adapted according to their use.
    Another aspect of the invention relates to a laser-sintered or multi-jet-fusion-produced brush comprising a bristle holder and bristles. In particular, the bristles and the bristle holder are produced by laser sintering or multi-jet fusion processes. The brush may comprise a polymer or polymer blend and abrasive particles. The brush may be formed in one piece, so that the bristle holder and the bristles are produced substantially in one process step. The brush can take many forms, depending on the purpose. For example, several bristles with lengths between 0.5 and 100 mm may be provided. The bristles of a device can have both the same and different lengths. The diameter of the bristles is typically between 50 μm and 10 mm. The bristles of a device can have both the same and different diameters. The geometry of the bristle shape can be round, oval, rectangular, triangular, star-shaped or cross-shaped in cross-section. Oval and round shapes can also have additional indentations. The bristle ends may have planar or planar inclined terminations or show a concave or convex curvature.
    The brush may be, for example, a drivable brush. For this purpose, the brush may additionally comprise a bearing bush, via which the brush can be rotatably mounted. Alternatively, an oscillatable brush is conceivable.
    It is also possible to obtain laser-sintered brushes for grinding, polishing, deburring, structuring, rounding or subdivisions of workpieces.
    The device is suitable for machining workpieces made of different materials, for example metal or metal alloys, especially aluminum and steel; Wood, glass or sapphire.
    In the form of the brushes may be circular brushes, such as roller brushes and Schaftrundbürsten and test tube brushes; Disc brushes; Internal brushes, for example pipe brushes; or brush strokes.
    A laser-sintered brush has the advantage that it can be produced individually and without great effort.
    A further aspect of the invention is a method for producing a device for grinding or polishing, in particular a device as described above. The method comprises the steps of: providing a material comprising a polymer or polymer mixture and abrasive particles, feeding a 3D printer with the material, solidifying individual material layers on the basis of a program for determining a geometry of the device.
    The 3D printer is charged in such a way that the device for grinding or polishing has at least two regions, each with a different proportion, in particular weight percent, or different distribution of the abrasive particles.
    The abrasive particles can be distributed at least in a part of the polymer or polymer mixture. Preferably, this part has at least two regions with a different proportion, in particular weight percent, or a different distribution of the abrasive particles. It is conceivable that the polymer or polymer mixture is present as separate materials and is correspondingly layered during the charging. The loading of the 3D printer can also be done with a finished material mixture, for example in the form of a material cartridge. The individual layers of polymer or polymer mixture and / or abrasive particles can be pre-coated in the material cartridge.
    As a 3D printer especially printers for laser sintering, laser melting or multi-jet fusion printers are used. But even 3D printers, for example, working with the "additive layer manufacturing" method, are conceivable.
    To determine the geometry, programs can be used which provide the output of a 3D model. These programs are typically CAD programs, such as Solidworks, Geomagic Design, Inventor.
    The method has the advantage that the device is easy to produce and different materials can be used. The geometry of the device can be determined individually depending on the intended application.
    The solidification of the individual material layers can be carried out optically, preferably by means of laser sintering or infrared melting.
    The materials are preferably present as a powder. In laser sintering, the powder is locally sintered by laser (selective laser sintering), i. just heated so much that connect the surface adjacent particles. It is also conceivable to use selective laser melting. The powder is locally melted by laser, so that surrounding particles connect. In the multi-jet fusion process, a binder liquid is pressed into the powder bed. By means of infrared energy sources above the powder bed, the respective layer is then fused in a further step.
    The geometry of the device is preferably a brush or a brush. The shape of the brushes may be circular brushes, such as roller brushes and sheep round brushes, as well as test tube brushes; Disc brushes; Internal brushes, for example pipe brushes; or brush strokes. The geometry of the bristle shape can be round, oval, rectangular, triangular, star-shaped or cross-shaped in cross-section. Oval and round shapes may also have additional indentations. The bristle ends may be planar, planar inclined, convex or concave. The bristles can have lengths of 0.5 to 100 mm. Depending on the application, different brushes and brush shapes can be produced. Brushes are particularly suitable for machining larger workpieces. Brushes are particularly suitable for the processing of small workpieces, which are installed for example in watches.
    Another aspect of the invention relates to an apparatus for grinding or polishing, which is obtainable by optical processing, in particular laser sintering or infrared melting, by the above method.
    The invention also relates to a method of making a brush comprising a bristle holder and bristles. The method comprises the steps of: providing a material comprising a polymer or polymer mixture and abrasive particles, feeding a 3D printer with the material, solidifying individual material layers on the basis of a program for determining a geometry of the device.
    The printer may be a laser sinter printer or a multi-jet fusion printer. At least the bristle holder and bristles can be laser sintered or made by multi-jet fusion. Preferably, the bristle holder and the bristles are made in one piece by one of the two methods.
    Another aspect of the invention relates to a material cartridge for feeding a 3D laser printing apparatus for producing a three-dimensional apparatus for grinding or polishing, in particular a device as described above, by means of optical processing. The material cartridge contains a polymer or polymer mixture and abrasive particles. The abrasive particles are present at least in a part of the polymer or polymer mixture proportionally or distributed, in particular in an amount of 1 to 80 weight percent.
    Such a material cartridge is characterized in that a 3D printer can be equipped without much effort. The manufacturing process of the three-dimensional device is accelerated. In addition, such a material cartridge allows a clean working and prevents the Aufwirbelung powder or powder mixtures in the assembly. In addition, the transport is simplified.
    The at least one part can have at least two regions with a different proportion, in particular weight percent, or a different distribution of the abrasive particles. There are also several areas with different proportion or distribution of the abrasive particles conceivable. It is also possible that at least part of the polymer or polymer mixture contains no abrasive particles.
    The individual regions are preferably present as layers. If regions with different proportions of abrasive particles are adjacent, a continuous increase or decrease of the proportion of abrasive particles in the polymer or polymer mixture can take place from one region to the next. Alternatively or additionally, regions with a higher proportion of the abrasive particles in the polymer or polymer mixture can be layered on or at regions with a low proportion of the abrasive particles in the polymer or polymer mixture or regions without abrasive particles.
    The material cartridge may further comprise a housing in which the individual material layers are laminated. The housing may be made of a plastic or cardboard, for example.
    During the optical processing, a hardening of the individual material layers takes place by means of laser or infrared radiation.
    The presence of regions with different proportion or different distribution of the abrasive particles in the polymer or polymer mixture in the material cartridge makes it possible to avoid a complicated assembly of the printer.
    The polymer or polymer mixture and the abrasive particles are preferably a powder and / or powder mixture. The polymer or polymer mixture may have an average particle size of 1 to 200 pm. The abrasive particles may have an average particle size of 0.5 to 500 pm. The abrasive particles can also be present as nano-particles with average particle sizes of 1 nm-1 pm.
    The polymer or polymer mixture is preferably selected from the group: PEEK (polyetheretherketone); PUR (polyurethane); PA (polyamide); PP (polypropylene); POM (polyoxymethylene); PE (polyethylene) or combinations thereof.
    The abrasive particles are preferably selected from the group: carbide, in particular silicon carbide: glass; Diamond, corundum; Cubic boron nitride; Metal oxide, especially alumina; alumina; diatomaceous earth; Polishing earth; Polishing slate; whiting; or combinations thereof.
    The powder or powder mixture allows easy handling of the material. The different grain sizes allow versatile applications.
    On the basis of figures, which represent only embodiments, the invention will be explained in more detail below. Show it:
    Fig. 1: A part of an inventive device for polishing or grinding in a sectional view ent along a longitudinal axis of the device;
    Fig. 2: at least a part of another inventive device for polishing or grinding in one
    Section view along the longitudinal axis of Figure 1 during the machining of a workpiece.
    3 shows a further embodiment of the device according to the invention in the sectional view along the longitudinal axis according to FIG. 1;
    4 shows a further embodiment of the device according to the invention in the sectional view along the longitudinal axis according to FIG. 1;
    5 shows a further embodiment of the device according to the invention in the sectional view along the longitudinal axis according to FIG. 1;
    6A shows a section of the bristles of a device according to the invention in the sectional view along a plane of the longitudinal axis of the bristles;
    Fig. 6B: the section of the bristles of Fig. 6A in cross-section perpendicular to the axis through the bristles;
    7: different geometries of the grinding parts of a device according to the invention in cross-section perpendicular to the longitudinal axis of the bristles.
    8 shows a flowchart which shows the individual steps of a method according to the invention;
    9 shows a material cartridge according to the invention in a simplified representation.
    Like reference numerals in the several figures indicate like parts. It should be noted that a figure may include two possible embodiments.
    Fig. 1 shows a part of the device 1 according to the invention in a lateral sectional view along a longitudinal axis of the grinding parts. The device 1 is a section of a plate brush. The device 1 comprises a fixing part 2 in the form of a bristle holder and two grinding parts 3. The grinding parts 3 are shown in the form of two bristles 31 and 32. The fastening element 2 is made of polyamide with about 5 percent by weight of ceramic particles 9a. As ceramic particles 9a ceramic with KornlSO was used. Thus, the mean particle size of the ceramic particles 9a is 80 μm. The first bristle 31 has a first region 31 a, which has essentially the same composition of polyamide and ceramic particles 9 a as the fastening part 2. A second region 31b has a proportion of 30 percent by weight of ceramic particles 9a in the polyamide. In the second illustrated bristle 32, the area with 30 percent by weight of ceramic particles 9a can be found in a region 32b at the bristle end 5. A larger area 32a of the bristle 32 has only 5 percent by weight of ceramic particles 9a. The bristle ends 5 have a planar end 5a. The second bristle 32 also has an opening in the form of a channel 4.auf. The channel 4 extends from the attachment part 2 over the entire length L of the bristle 32 to the bristle end 5. The bristles have a length L of 12 mm and a diameter D of 1.5 mm. The channel has a diameter of 0.5 mm and allows the passage of a coolant or, for example, compressed air.
    Fig. 2 shows at least a portion of another inventive device 1 in the form of a disc brush during the machining of a workpiece 6. The bristles 33 and 34 have different sized areas, 33b and 34b, with about 30 weight percent of diamond particles 9b in the polyamide , The regions 33a and 34a comprise 5% by weight of diamond particles 9b in polyamide. The bristle ends 5 grind a workpiece 6 in the direction 8. The workpiece 6 has a machined surface 7a and an unprocessed surface 7b.
    In FIG. 3, the bristles 35 and 36 of a further device 1 according to the invention each have three regions 35a-35c with different proportions by weight of the abrasive particles 9. The abrasive particles 9 consist of ceramic particles 9a and diamond particles 9b.
    In Fig. 4, the bristles 37 and 38 have different diameters. An inventive device 1 may comprise a plurality of bristles each having different diameters. The openings in the form of channels 4 are arranged in the fastening part 2 and between the bristles 37 and 38. The bristle ends 5 have, for example
    权利要求:
    Claims (19)
    [1]
    a proportion of 50% by weight of abrasive particles 9 comprising diamond and ceramic particles having an average particle size of 40 μm. In Fig. 5, the terminations 5b of the bristle ends 5 show a concave curvature. These are round bristles. The fastening part 2 consists only of polymer without abrasive particles. FIG. 6A shows a section of the bristles 3 in a sectional view along a plane of the bristle length. FIG. Abrasive particles 9 are distributed in a polymer 11 before. 6B shows a cross-section perpendicular to the axis through the bristles 3, once without an opening and once with an opening in the form of the channel 4. FIG. 7 shows possible geometries of the grinding parts, in particular bristles, in cross-section perpendicular to the longitudinal axis of the bristles , The bristles may have in cross section, for example, round a), triangular b), oval c), rectangular d), hexagonal e), cruciform f) or star-shaped g) shapes. The length of the bristles may be different in cross section, as shown in c) and 1). Oval shapes may have additional bulges 12 in cross-section as shown in h) and i). The bulges can be h) on both sides or only on one side j). Star-shaped shapes may have triangular tips g) or rectangular peaks i). The shapes in cross-section may have additional indentations 10 k). FIG. 8 shows a flow chart which shows the individual steps of a method according to the invention. A laser sintering printer 29 is optionally populated with a pre-stacked material cartridge 21 or the individual layers of material 22a-c are layered into a corresponding space of the printer 29. By CAD program 28, the geometry of the three-dimensional brush is fed into the printer Start 17 of the laser sintering process 30, the laserzusinternen layers are first provided 18 and then laser sintered 19. The steps 18 and 19 are carried out until the end 20 of the method 30 and the receipt of the finished product 31 alternately. FIG. 9 shows a material cartridge 21 according to the invention in a simplified representation. The material cartridge 21 comprises a housing 23 in which the individual layers 24-27 are pre-coated. For example, there is a first layer 24 which consists only of polyamide. This is followed by a layer 25 with proportions of ceramic particles 9a and diamond particles 9b. Another layer 26 also has ceramic particles 9a and diamond particles 9b, but in a smaller amount than layer 25. The last layer 27 consists again only of polyamide. claims
    Device (1) for grinding or polishing, comprising a carrier material of a polymer or a polymer mixture and abrasive particles (9a, 9b), wherein the abrasive particles (9a, 9b) are distributed at least in a part of the carrier material, characterized the device (1) has at least two regions (31a, 31b, 32a, 32b, 33a, 33b, 34a, 34b, 35a, 35b, 35c) with different proportions, in particular by weight, or different distribution of the abrasive particles (9a, 9b). having.
    [2]
    Device (1) according to claim 1, wherein the device (1) comprises a fixing part (2) and at least one grinding part (3), the grinding part (3) having a proximal end and a distal end and the proximal end being attached to the Fastening part (2) adjoins, wherein the at least two regions (31a, 31b, 32a, 32b, 33a, 33b, 34a, 34b, 35a, 35b, 35c) with different proportion or different distribution of the abrasive particles (9a, 9b) in the grinding part available.
    [3]
    3. Device (1) according to claim 2, wherein the abrasive part (3) at the distal end a higher proportion or a higher distribution of the abrasive particles (9 a, 9 b) than at the proximal end.
    [4]
    4. Device (1) according to claim 2 or 3, wherein the fastening part (2) is a bristle holder and the grinding part (3) is a bristle (31,32, 33, 34, 35, 36, 37, 38).
    [5]
    5. Device (1) according to claim 4, wherein the device (1) has at least one opening (4) in the bristle direction, wherein the opening is preferably arranged within the bristle and have a diameter of 50 pm to 4 mm.
    [6]
    6. Device (1) according to one of the preceding claims, wherein the device (1) is integrally formed.
    [7]
    7. Device (1) according to one of the preceding claims, wherein the device (1) is at least partially laser-sintered.
    [8]
    8. Device (1) according to one of the preceding claims, wherein the polymer or polymer mixture is selected from the group: polyetheretherketone; polyurethane; Polyamide; polypropylene; polyoxymethylene; polyethylene; or combinations thereof.
    [9]
    9. Device (1) according to one of the preceding claims, wherein the abrasive particles (9a, 9b) are selected from the group: carbide, in particular silicon carbide; Glass, diamond, corundum; Cubic boron nitride; Metal oxide, especially alumina; alumina; diatomaceous earth; Polishing earth; Polishing slate; Mud earth; or combinations thereof.
    [10]
    10. Device (1) according to one of the preceding claims, wherein the abrasive particles (9a, 9b) have an average particle size of 0.5 to 500 pm.
    [11]
    A laser-sintered or multi-jet-fusion brush comprising a bristle holder and bristles (31, 32, 33, 34, 35, 36, 37, 38), in particular comprising a polymer or polymer mixture and abrasive particles (9a , 9b).
    [12]
    12. Method (13) for producing a device (1) for grinding or polishing, in particular according to one of claims 1 to 10, comprising the steps - providing a material comprising a polymer or polymer mixture and abrasive particles (21, 22a, 22b, 22c ), - loading a 3D printer with the material (14, 15), - solidifying (19) individual material layers (18) on the basis of a program (28) for determining a geometry of the device (1), characterized in that the 3D Printer (29) is charged such that the device (1) for grinding or polishing at least two areas (31a, 31b, 32a, 32b, 33a, 33b, 34a, 34b, 35a, 35b, 35c), each with a different proportion , in particular weight percent, or a different distribution of the abrasive particles (9a, 9b).
    [13]
    13. Method (13) according to claim 12, wherein the solidification (19) of the individual material layers (18) takes place optically, in particular by means of laser sintering or infrared melting.
    [14]
    14. The method (13) according to claim 12 or 13, wherein the geometry of the device (1) is a brush or a brush.
    [15]
    15. A method of manufacturing a brush comprising a bristle holder and bristles, comprising the steps of: providing a material containing a polymer or polymer mixture and abrasive particles (21, 22a, 22b, 22c), supplying a 3D printer with the material (14 , 15), - consolidating (19) individual material layers (18) on the basis of a program (28) for determining a geometry of the device (1), wherein the 3D printer is in particular a laser sinter printer or a multi-jet fusion printer and at least the bristle holder and the bristles are laser sintered or made by multi-jet fusion.
    [16]
    16. Apparatus (1) for grinding or polishing, obtainable by optical processing, in particular laser sintering or infrared melting, comprising the steps of: providing a material comprising a polymer or polymer mixture and abrasive particles (21, 22a, 22b, 22c), Loading a 3D printer with the material (14, 15), solidifying individual material layers (19) of the device (1) by means of laser sintering or infrared melting on the basis of a program (28) for determining a geometry of the device (1) characterized in that the 3D printer (29) is fed (14, 15) such that the device (1) for grinding or polishing comprises at least two regions (31a, 31b, 32a, 32b, 33a, 33b, 34a, 34b, 35a , 35b, 35c) each having a different proportion, in particular weight percent, or a different distribution of the abrasive particles (9a, 9b).
    [17]
    17. A material cartridge (21) for feeding a 3D laser printing device (29) for producing a three-dimensional device (1) for grinding or polishing, in particular a device (1) according to one of claims 1 to 10, by means of optical processing, comprising a Polymer or polymer mixture and abrasive particles (9a, 9b), wherein the abrasive particles (9a, 9b) at least in a part of the polymer or polymer mixture proportionally, in particular in an amount of 1 to 80 weight percent, or distributed.
    [18]
    18. Material cartridge (21) according to claim 17, wherein the at least one part has at least two regions with a different proportion, in particular weight percent, or a different distribution of the abrasive particles (9a, 9b).
    [19]
    19. Material cartridge (21) according to claim 17 or 18, wherein the polymer or polymer mixture and the abrasive particles (9a, 9b) is a powder and / or powder mixture and wherein the polymer or polymer mixture has an average particle size of 1 to 200 pm and the abrasive particles have an average particle size of 0.5 to 500 pm.
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    同族专利:
    公开号 | 公开日
    DE102017221111A1|2018-06-14|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    EP16203259|2016-12-09|
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