EP4304822A1 - Procédé de découpe d'une pièce comprenant une pluralité d'éléments fins séparés par des interstices - Google Patents
Procédé de découpe d'une pièce comprenant une pluralité d'éléments fins séparés par des intersticesInfo
- Publication number
- EP4304822A1 EP4304822A1 EP22711264.6A EP22711264A EP4304822A1 EP 4304822 A1 EP4304822 A1 EP 4304822A1 EP 22711264 A EP22711264 A EP 22711264A EP 4304822 A1 EP4304822 A1 EP 4304822A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thin
- cutting
- filling material
- cutting method
- interstices
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/006—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting blocs of plastic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/16—Cutting rods or tubes transversely
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/16—Cutting rods or tubes transversely
- B26D3/164—Cutting rods or tubes transversely characterised by means for supporting the tube from the inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Definitions
- the present invention relates to the cutting of parts comprising a plurality of thin elements remote from each other and able to intersect.
- the invention applies perfectly to the cutting of parts manufactured by an additive manufacturing process such as additive manufacturing by depositing layers of powder and which are constituted at least in part by a structure composed of thin walls or strands purposes.
- Additive manufacturing by deposition of layers of powder is a manufacturing process in which objects are manufactured by the selective consolidation of different layers of additive manufacturing powder superimposed on each other above a support such as a manufacturing plate. .
- the consolidation is selective because only areas of the powder layers corresponding to the sections of the objects to be manufactured are consolidated.
- selective consolidation is obtained by total or partial melting (sintering) of the powder grains. Selective melting can be obtained using one or more laser beams (Selective Laser Melting ® ) and/or one or more electron beams (Electron Beam Melting ® ).
- a first layer of powder is distributed uniformly on the plate using a device such as a blade or a roller mounted on a mobile carriage in translation above the manufacturing platform. Then, this first layer of powder is selectively fused, for example using a laser beam and/or an electron beam. Then, a second powder layer is evenly distributed over the first powder layer that has just been selectively fused, and then this second powder layer is selectively fused. Thus, as many layers of powders as necessary to complete the manufacture of the object or objects to be manufactured are evenly distributed on top of each other and selectively fused.
- Additive manufacturing by deposition of layers of powder is particularly suited to the manufacture of parts comprising a plurality of thin elements distant from each other and able to intersect.
- additive manufacturing by depositing layers of powder makes it possible to manufacture monolithic parts comprising thin walls having a thickness less than 1 millimeter, or even equal to 0.1 millimeter, or strands having a section less than 4 square millimeters .
- parts with this type of structure consisting of thin walls or thin strands can be used to make heat exchangers, filters or catalysts.
- the thin walls or the thin strands tend to be deformed by the tool making the cut and burrs can come to obstruct the interstices separating the thin walls or the fine strands.
- burrs and deformations of the thin walls or fine strands should be avoided as they degrade the geometric quality of the fabricated part and may adversely affect the future functions of that part.
- this application WO2020207969 does not relate to the cutting of a single object or of an object comprising thin walls or thin strands.
- this application WO2020207969 does not relate to the cutting of parts which have already been separated from the plate on which they were manufactured.
- the object of the present invention is to provide a method capable of preserving the geometric quality and the future functions of a part comprising a plurality of fine elements, such as walls or strands, when this part is cut.
- the cutting process according to the invention is applicable both to the cutting of a part still attached to the plate on which it was manufactured or to the cutting of a part which has already been separated from its manufacturing plate, for example using the method described in application WO2020207969.
- the subject of the invention is a process for cutting out a part comprising a plurality of thin elements separated by interstices, the thin elements taking the form of thin walls having a thickness of less than 1 millimeter and/or fine strands having a section less than 4 square millimeters.
- the method comprises the following steps taken chronologically: a) filling the interstices located between the thin elements of the part to be cut with a filler material, b) cutting the part into several parts by cutting out said thin elements, c) removing filler material from the cut portions.
- the filler material When cutting, the filler material supports the thin elements, thus preventing their deformation and the creation of burrs.
- the invention can also provide that:
- the thin elements extend in the same direction without crossing, or the thin elements extend in the same direction and intersect with each other, for example so as to form a lattice in two or three dimensions
- the thickness of these thin walls is between 0.05 millimeter and 0.25 millimeter, and preferably between 0.09 and 0.11 millimeter,
- the section of these fine strands is between 1 square millimeter and 3 square millimeters, and preferably between 2 and 3 square millimeters,
- the cut is made with a mechanical tool such as a saw blade
- the filling material is in the liquid state during step a) and in the solid state during step b),
- the filling material changes from the liquid state to the solid state, and vice versa from the solid state to the liquid state, under the effect of a change in temperature
- the filling material has a solidification temperature and a melting temperature between 45°C and 100°C
- the filling material is water or wax
- the filling material has a solidification temperature and a melting temperature between 100°C and 250°C,
- the filling material is a metal or a metal alloy with a low melting point
- the filling material changes from the liquid state to the solid state by a chemical reaction
- the filling material is destroyed, for example by combustion or by chemical attack, when it is removed from the cut parts,
- the filling material is a polymerizable resin
- the filling material is in a pasty state during step a) and in a solid state during step b),
- the filling material is a thermoformable resin.
- the invention also relates to a method for manufacturing at least one part comprising a plurality of thin elements separated by interstices, the thin elements taking the form of thin walls having a thickness of less than 1 millimeter and/or of strands ends having a section of less than 4 square millimeters, the process for manufacturing said part being an additive manufacturing process and the part thus manufactured being cut out after manufacture using the cutting process according to the invention.
- This manufacturing method can also provide for manufacturing several parts comprising a plurality of thin elements separated by interstices, the method comprising the following steps taken chronologically:
- This manufacturing process can also provide that a part or a body to be cut is initially manufactured by an additive manufacturing process by deposition of layers of powder and selective consolidation of each layer of powder.
- FIG. 1 shows a schematic perspective view of a first example of a part comprising a plurality of fine elements separated by interstices
- FIG. 2 shows a schematic perspective view of a second example of a part comprising a plurality of fine elements separated by interstices
- FIG. 3 shows a schematic perspective view of a third example of a part comprising a plurality of fine elements separated by interstices
- FIG. 4 shows a sectional view of a part before the introduction of a filling material
- FIG. 5 shows a sectional view of a part after the introduction of a filling material
- FIG. 6 shows a perspective view of two parts cut from a part with the cutting method according to the invention
- FIG. 7 shows a perspective view of the cutting of several parts in the same body with the cutting method according to the invention.
- the invention relates to the cutting of parts comprising a plurality of elements separated by interstices.
- the invention is particularly aimed at the cutting of parts manufactured by an additive manufacturing process such as additive manufacturing by depositing layers of powder and which are constituted at least in part by a structure composed of thin walls or thin strands.
- FIG. 1 illustrates a first example of part 10 which can advantageously be cut using the method according to the invention.
- the part 10 comprises a plurality of thin elements 12 taking the form of thin walls 14.
- thin walls it is meant walls whose thickness is less than 1 millimeter, for example whose thickness is between 0.05 millimeter and 0.25 millimeter, and preferably between 0.09 and 0.11 millimeter.
- the thin walls rise from a reference plane P10 corresponding for example to the plane of the manufacturing plate on which the part is manufactured by an additive manufacturing process such as additive manufacturing by depositing layers of powder and consolidation selectively of these layers of powder.
- the thin walls 14 of the part 10 extend without crossing in the same reference direction D10 which can correspond for example to the direction in which the part is manufactured layer by layer.
- the thin walls 14 extend orthogonally to the reference plane P10 without crossing. However, the thin walls 14 are connected to each other by their ends so as to form a single piece 10.
- a first group of very wide thin walls 16 extend parallel to each other
- a second group of thin walls of smaller width 18 extend parallel to each other and orthogonal to the thin walls of large width of the first group.
- a thin wall of smaller width connects two thin walls of adjacent large width.
- the thin walls of large width are sometimes connected by a thin wall of smaller width located on a first side Cl of the part sometimes by a thin wall of smaller width located on a second side C2 of the room.
- two adjacent very wide thin walls are located less than one millimeter from each other, but at a non-zero distance in order to leave a gap 30 between them.
- the interstices 30 allow, for example, the part 10 to fulfill the function of filter, catalyst or heat exchanger.
- FIG. 2 illustrates a second example of part 10 which can advantageously be cut using the method according to the invention.
- the part 10 also comprises a plurality of thin elements 12 taking the form of thin walls 14.
- thin walls it is always understood walls whose thickness is less than 1 millimeter, for example whose thickness is between 0.05 millimeter and 0.25 millimeter, and preferably between 0.09 and 0.11 millimeter.
- the thin walls also rise from a reference plane P10 corresponding for example to the plane of the manufacturing plate on which the part is manufactured by an additive manufacturing process such as additive manufacturing by depositing layers of powder and selective consolidation of these layers of powder.
- the thin walls 14 of the part 10 intersect with each other and extend in the same reference direction D10 which can correspond for example to the direction in which the part is manufactured layer by layer.
- the thin walls 14 extend orthogonally to the reference plane P10.
- each thin wall 14 intersects with several other thin walls.
- first thin walls 20 of a first group extend parallel to each other
- second thin walls 22 of a second group extend parallel to each other and orthogonal to the first thin walls. More precisely, each thin wall 20 of the first group intersects with all the thin walls of the second group, and conversely, each thin wall of the second group intersects with all the thin walls of the first group.
- the thin walls form a two-dimensional lattice.
- two adjacent very wide thin walls are located less than one millimeter from each other, but at a non-zero distance in order to leave a gap 30 between them.
- the interstices 30 form ducts of small section, for example between 1 square millimeter and 1.5 square millimeters, and they allow for example the part 10 to fulfill a function of filter, catalyst or heat exchanger.
- FIG. 3 illustrates a third example of part 10 which can advantageously be cut using the method according to the invention.
- the part 10 comprises a plurality of thin elements 12 taking the form of thin strands 24.
- thin strands is meant strands whose section is for example between 1 square millimeter and 3 square millimeters, and preferably between 2 and 3 square millimeters.
- the fine strands 24 also rise from a reference plane P10 corresponding, for example, to the plane of the manufacturing plate on which the part is manufactured by an additive manufacturing process such as additive manufacturing by depositing layers of powder and selective consolidation of these powder layers.
- the fine strands 24 of the part 10 intersect with each other and extend in directions that are different from each other and different from the reference direction D10 which can correspond, for example, to the direction in which the part is manufactured. per layer.
- the fine strands 24 extend in four directions D1, D2, D3, D4 orthogonal to one another. And, each fine strand extending in one of these four directions intersects with three other fine strands which respectively extend in each of the other three directions.
- first thin strands 26 of a first group extend parallel to each other in the first direction D1
- second thin strands 28 of a second group extend parallel to each other in the second direction D2
- third fine strands 32 of a third group extend parallel to each other in the third direction D3
- fourth fine strands 34 of a fourth group extend parallel to each other in the fourth direction D4.
- the thin strands form a three-dimensional lattice.
- two parallel and adjacent thin strands are located relative to each other at a distance of between 5 and 8 millimeters, but at a non-zero distance in order to leave a gap 30 between the different strands.
- the interstices 30 are substantially cubic in shape and they are connected to each other. The three-dimensional lattice formed by the fine strands allows for example the part 10 to fulfill a function of filter, catalyst or heat exchanger.
- the network of thin elements 12 is partially surrounded by a solid wall 36 and thicker than the thin elements 12.
- the invention can advantageously and indiscriminately be applied to parts 10 comprising thin elements not surrounded by a solid wall, or completely or partially surrounded by a solid wall.
- the ratio between the total surface of the part, that is to say the surface contained inside the contour exterior of the part, and the cumulative surface of the sections of the various strands and/or of the various walls solidified by fusion is greater than five, and preferably greater than eight.
- the cutting method according to the invention is particularly suitable for cutting parts such as they have just been described with a mechanical tool such as a saw blade.
- the cutting method according to the invention comprises the following steps taken chronologically: a) filling the interstices located between the fine elements of the part to be cut with a filling material, b) cutting of the part in several parts by cutting out said thin elements, c) removing the filler material from the cut out parts.
- Figures 4 and 5 illustrate the filling of the interstices 30 located between the fine elements 12 of the part to be cut with a filling material 38.
- the filling material 38 is a material that can be deformed or is capable of deforming to penetrate easily, in particular by gravity, into the interstices 30 of a part 10.
- the filling material makes it possible to maintain the thin walls and/or the thin strands while cutting the part.
- the invention provides that the filling material is in the liquid state during step a).
- liquid state it is meant a state in which the filling material has a sufficient viscosity to be introduced easily, in particular by gravity, into the interstices 30 of a part 10 to be cut.
- a material that can take the form of a gel can be used as a filling material.
- the filling material can also be injected under pressure into the interstices of the part.
- step b the filling material is taken to a solid state.
- this filling material offers a certain rigidity allowing it to hold the fine elements during cutting and to avoid the appearance of burrs.
- Figure 6 shows two parts Pt1, Pt2 cut cleanly in a part 10 thanks to the filling material present in the interstices 30.
- the filling material is again taken to the liquid state during step c).
- the filling material can simply withdraw from the cut parts by gravity.
- a liquid or gaseous fluid and for example under pressure, can be used to expel the liquid filling material from the interstices 30.
- the filling material passes from the liquid state to the solid state, and conversely from the solid state to the liquid state, under the effect of a change in temperature.
- This reversible change of state of the filler material under the effect of a change in temperature facilitates the implementation of the cutting process.
- the filling material changes from solid to liquid state by heating and from liquid to solid state by cooling.
- the filling material has a solidification temperature and a melting temperature of between 45°C and 100°C, for example between 55°C and 75°C, and for example between 59°C and 61°C.
- the filling material may be a wax, such as a wax of mineral origin such as paraffin.
- a wax offers solidification and melting temperatures generally between 45°C and 75°C.
- the wax in the liquid state can be poured onto the part in order to fill the interstices 30 by gravity.
- the part and possibly the plate on which it was manufactured is/are immersed in a bath of wax in the liquid state, and therefore heated beforehand.
- the wax and the part are cooled so that the wax gradually returns to its solid state.
- one or more plugs can be attached to the part to contain the wax inside the part during its cooling and its solidification.
- the piece can be cut.
- the wax contained in the cut parts is again heated in order to return to the liquid state and be withdrawn by gravity from the interstices of the cut parts.
- the filling material is water. Water changes to a solid state when taken below approximately 0°C (at sea level) and to a liquid state when taken above approximately 0°C (at sea level). of the sea).
- Water in the liquid state can be poured onto the part in order to fill the interstices 30 by gravity.
- the part and possibly the plate on which it was manufactured is/are immersed in a water bath in the liquid state.
- the water contained in the part is cooled to a temperature below 0°C and gradually changes to its solid state.
- one or more plugs can be attached to the part to contain the water inside the part during the cooling and the solidification of the water.
- the part can be cut. Finally, once the cut has been made, the ice cream contained in the cut parts is heated so that the water returns to the liquid state and withdraws by gravity from the interstices of the cut parts.
- the filling material has a solidification temperature and a melting temperature between 100°C and 250°C.
- the filling material can be a metal or a metal alloy with a low melting point.
- the filler material is or includes tin or another poor metal.
- the low melting point metal or alloy heated to a liquid state can be poured onto the workpiece to fill the interstices 30 by gravity. Once the metal or the metal alloy in the liquid state has been introduced into the interstices of the part, the part is cooled so as to return the metal or the metal alloy to its solid state. In the case where the part is open in several places, one or more plugs can be attached to the part to contain the metal or the metal alloy inside the part during its cooling and its solidification. Once the metal or metal alloy has solidified, the part can be cut. Finally, once the cut has been made, the part is heated so that the metal or metal alloy returns to the liquid state and is withdrawn by gravity from the interstices of the cut parts.
- the filling material passes from the liquid state to the solid state by a chemical reaction.
- the filling material is destroyed, for example by combustion or by chemical attack, during step c).
- the filling material is a polymerizable resin, the polymerization being able to be caused thermally or chemically.
- the filling material is in a pasty state during step a) and in a solid state during step b).
- pasty state is meant a malleable state, with a lower viscosity than that of a gel, but sufficient to allow the insertion of the filling material into the interstices of the part.
- the filling material can also be injected under pressure into the interstices of the part.
- the filling material is a thermoformable resin becoming pasty above a certain temperature and becoming solid again below this same temperature or another temperature.
- the thermoformable resin changes to a pasty state when it is brought to a temperature between 50 and 70°C and returns to a solid state when it is cooled below a temperature between 50 and 70 °C.
- thermoformable resin can again be heated to be removed from the interstices of the part in its malleable state, or destroyed by combustion or chemical attack.
- the invention also covers a method of manufacturing at least one part 10 comprising a plurality of fine elements 12 separated by interstices.
- the process for manufacturing said part 10 is an additive manufacturing process and the part thus manufactured is cut out after manufacture using the cutting process which has just been described.
- the manufacturing process can also provide for manufacturing several parts (P1, P2, P3, etc.) comprising a plurality of fine elements separated by interstices, as shown in figure 7.
- the manufacturing process provides for the additive manufacturing of a single body 40 grouping together the different parts (P1, P2, P3, etc.) to be manufactured, then using the cutting process which has just been described to cut the different parts in said body. In this way, it is possible to manufacture a large number of parts from a single production.
- this variant of the manufacturing method also makes it possible to manufacture parts that are very thin in height, for example only 4 to 8 millimeters in height, and comprising thin elements such as those defined previously.
- the invention covers a manufacturing process in which a part 10 or a body 40 to be cut is initially manufactured by an additive manufacturing process by deposition of layers of powder and selective consolidation of each layer of powder.
- a part 10 or a body 40 to be cut are manufactured on a manufacturing plate, said part or said body can still be secured to its plate during its cutting.
- several parts 10 and/or several bodies 40 can be manufactured on the same manufacturing platform.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2102478A FR3120561B1 (fr) | 2021-03-12 | 2021-03-12 | Procédé de découpe d’une pièce comprenant une pluralité d’éléments fins séparés par des interstices |
| PCT/FR2022/050355 WO2022189726A1 (fr) | 2021-03-12 | 2022-02-28 | Procédé de découpe d'une pièce comprenant une pluralité d'éléments fins séparés par des interstices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4304822A1 true EP4304822A1 (fr) | 2024-01-17 |
Family
ID=77021391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22711264.6A Withdrawn EP4304822A1 (fr) | 2021-03-12 | 2022-02-28 | Procédé de découpe d'une pièce comprenant une pluralité d'éléments fins séparés par des interstices |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20240300131A1 (fr) |
| EP (1) | EP4304822A1 (fr) |
| FR (1) | FR3120561B1 (fr) |
| WO (1) | WO2022189726A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115921891B (zh) * | 2022-11-24 | 2024-08-13 | 北京卫星制造厂有限公司 | 一种大悬垂平面带栅格超结构slm成形工艺方法及系统 |
| CN119747660B (zh) * | 2024-12-14 | 2025-11-25 | 北京星航机电装备有限公司 | 一种用于薄壁板状结构的金属增材制造方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3608036A (en) * | 1969-06-16 | 1971-09-21 | American Cyanamid Co | Making plastic spinnerettes |
| FR2683472B1 (fr) * | 1991-11-07 | 1995-10-06 | Cadier Patrick | Procede de decoupe de pieces dans un bloc, dispositif pour sa mise en óoeuvre et pieces obtenues par ce procede. |
| CN101679721A (zh) * | 2007-06-12 | 2010-03-24 | 住友电木株式会社 | 树脂组合物、填埋材料、绝缘层以及半导体装置 |
| FR2933205B1 (fr) * | 2008-06-27 | 2010-08-13 | Commissariat Energie Atomique | Procede ameliore de realisation d'enceintes remplies de liquide et fermees par une membrane |
| JP5964987B2 (ja) * | 2013-03-29 | 2016-08-03 | 日本碍子株式会社 | ハニカム成形体の切断方法 |
| FR3094666B1 (fr) | 2019-04-08 | 2021-03-12 | Addup | Procédé de séparation d’objets fabriqués par un procédé de fabrication additive sur un plateau de fabrication. |
| DE102019205587A1 (de) * | 2019-04-17 | 2020-10-22 | MTU Aero Engines AG | Schichtbauverfahren und Schichtbauvorrichtung zum additiven Herstellen zumindest einer Wand eines Bauteils sowie Computerprogrammprodukt und Speichermedium |
-
2021
- 2021-03-12 FR FR2102478A patent/FR3120561B1/fr active Active
-
2022
- 2022-02-28 US US18/281,483 patent/US20240300131A1/en active Pending
- 2022-02-28 EP EP22711264.6A patent/EP4304822A1/fr not_active Withdrawn
- 2022-02-28 WO PCT/FR2022/050355 patent/WO2022189726A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US20240300131A1 (en) | 2024-09-12 |
| FR3120561B1 (fr) | 2023-02-10 |
| FR3120561A1 (fr) | 2022-09-16 |
| WO2022189726A1 (fr) | 2022-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2588263B1 (fr) | Procédé de fabrication d'une pièce métallique par fusion sélective d'une poudre | |
| WO2022189726A1 (fr) | Procédé de découpe d'une pièce comprenant une pluralité d'éléments fins séparés par des interstices | |
| EP2879818B1 (fr) | Procede de realisation d'un objet tridimensionnel | |
| EP2900403B1 (fr) | Moule carapace a ecran thermique | |
| EP2709792B1 (fr) | Procede de fabrication d'un element moulant par frittage avec une partie non frittee entierement plane ; element moulant correspondant | |
| EP3174652B1 (fr) | Procédé de fabrication additive à base de poudre d'une pièce, notamment d'une lamelle de garniture pour moule de pneumatiques | |
| FR2932705A1 (fr) | Preforme et procede pour la fabrique, par moulage, d'un materiau solide a structure cellulaire | |
| EP4265358A1 (fr) | Procédé de fabrication d'une pièce poreuse par fusion laser sur lit de poudre | |
| CA2884458C (fr) | Modele de fonderie | |
| FR2706948A1 (fr) | ||
| EP4438215B1 (fr) | Procede de fabrication d'une structure comprenant des cavites, et structure correspondante. | |
| WO2002096579A2 (fr) | Procede de fabrication de profiles metalliques | |
| EP2059364B2 (fr) | Procede de brasage avec application de flux de brasage sur un cote d' une tranche d'un tube plat pour un echangeur de chaleur | |
| FR3030321B1 (fr) | Fabrication par fusion laser d'une piece telle qu'un boitier d'un dispositif optronique ou avionique et pieces associees | |
| EP0407323B1 (fr) | Procédé et dispositif de coulée continue entre cylindres de produits métalliques minces aptes au laminage à froid direct | |
| WO1993025377A1 (fr) | Procede pour realiser un modele de piece industrielle par transformation partielle d'un liquide sous l'action de la lumiere et dispositif de mise en ×uvre de ce procede | |
| EP3715024B1 (fr) | Procédé de fabrication additive d'une pièce d'équipement | |
| EP0539344B1 (fr) | Elément de construction présentant une structure cellulaire et procédé de fabrication de cet élément de construction | |
| WO2020240128A1 (fr) | Procédé de fabrication additive d'une pièce comprenant une étape de fabrication d'un support mixte | |
| WO2020207969A1 (fr) | Procede de separation d'objets fabriques par un procede de fabrication additive sur un plateau de fabrication | |
| FR3035807A1 (fr) | Masque d’encollage pour coller entre elles les strates d’un modele perdu | |
| EP3194094B1 (fr) | Modele perdu destine a être utilise en fonderie | |
| FR3098747A1 (fr) | Procede de fabrication d’une piece metallique | |
| WO2026078333A1 (fr) | Piece pour aeronef comprenant une surface en plafond autosupportée | |
| FR3158460A1 (fr) | Dispositif d’évacuation de poudre d’un support pour fabrication additive d’une pièce par fusion laser sur lit de poudre |
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 |
|
| 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: 20231012 |
|
| 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 |
|
| 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: 20241119 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20250320 |