950results about "Additive manufacturing with solids" patented technology

The invention relates to the technical field of powder bed heating, and discloses a powder bed heating method of additive manufacturing equipment, the powder bed heating method of the additive manufacturing equipment is realized based on a powder bed heating unit of the additive manufacturing equipment, and the powder bed heating unit of the additive manufacturing equipment comprises a handle bottom plate for providing a basic mounting platform for the whole device; a push-pull type local heating design is adopted for the device, a traditional overall preheating mode is replaced, energy consumption and the equipment use cost are greatly reduced, meanwhile, heat loss is reduced, the heating efficiency is improved, and through cooperation of double positioning and a real-time temperature control system, the energy-saving and environment-friendly effects are achieved. The accurate position of the heating unit is guaranteed through mechanical limiting and sensor detection, high-precision temperature control adjustment is matched, it is guaranteed that the temperature of the powder bed is stabilized within the preset range, part defects caused by temperature fluctuation are avoided, and the forming quality and the mechanical property stability of workpieces are remarkably improved.

An automated de-powdering system comprises a sleeve alignable with at least a portion of a build chamber and at least one actuator actuatable with respect to a build plate to move at least a portion of an additive manufacturing build out of the build chamber and into the sleeve. At least one support assembly is couplable to the sleeve and includes at least one support member insertable through the sleeve and into the additive manufacturing build. At least one agitation mechanism is couplable to at least one of the at least one support assembly or the sleeve and is actuatable to at least partially convey the powder build material away from at least one object of the additive manufacturing build. The support member is positioned to support the object in an absence of the powder build material around the object.

A golf club head includes a body formed by an additive manufacturing process. The body defines a toe region, a heel region, and a medial region positioned between the toe region and the heel region. A front face extends across the toe region, medial region, and the heel region and is formed of a sintered material. The body further includes a topline along a top side and a sole along a bottom side, each extending in a heel-toe direction. A plurality of grooves are disposed on the front face. The golf club head defines an internal cavity at least partially enclosed by the front face and the body. The internal cavity extends between the topline and the sole. A plurality of voids are defined by a rear surface of the front face.

The present invention discloses a non-thermal plasma treatment of metal powders in order to improve their processability by additive manufacturing (AM). The invention consists in bonding primary particles constituted of metals or metal alloys to a plurality of secondary particles constituted of metals, metal alloys, ceramics or polymers by the mean of a non-thermal plasma treatment. The primary particles have a larger mean diameter than the secondary. Both particles are injected through a non-thermal plasma glow discharge and / or in its afterglow region (region downstream the plasma discharge) where their surfaces are cleaned by removing contaminants and / or oxide layer and activated to react between each other. The functionalized metal powders are then collected and afterwards processed by AM leading to high quality parts. The functionalized metal powders produced by this plasma treatment improve the processability of metal by AM.

The present disclosure relates a method of chemical polishing a 3D printed object. The method comprises treating a 3D printed object with solvent to reduce the surface roughness of the 3D printed object, and controlling the Youngs modulus of the 3D printed object within a target value by selectively removing at least part of the solvent from the 3D printed object.

Embodiments of the present disclosure provide an apparatus, a system, and a method. The apparatus is configured to depowder and extract one or more printed parts prepared by a three-dimensional (3D) printer. The apparatus includes an elevated frame, a perforated plate, a lifting-lowering mechanism, a depowdering unit, and at least one gripper. The elevated frame is removably secured to an open top of a first container and configured to transversely receive fully raised at least one 3D printed layer and partially raised at least one powder layer. Upon lifting the elevated frame along with the perforated plate, the depowdering unit is configured to depowder the at least one powder layer and powder in between the one or more 3D printed parts. The at least one gripper is configured to automatically extract the one or more 3D printed parts.

An automated de-powdering system comprises a sleeve alignable with at least a portion of a build chamber and at least one actuator actuatable with respect to a build plate to move at least a portion of an additive manufacturing build out of the build chamber and into the sleeve. At least one support assembly is couplable to the sleeve and includes at least one support member insertable through the sleeve and into the additive manufacturing build. At least one agitation mechanism is couplable to at least one of the at least one support assembly or the sleeve and is actuatable to at least partially convey the powder build material away from at least one object of the additive manufacturing build. The support member is positioned to support the object in an absence of the powder build material around the object.

A method of additive layer manufacture (ALM) of an article in an ALM machine by producing a substrate 24 in-situ in the machine by cohering powder 27 together and then forming the article on the subst

Powder mixture for the use as building material in additive manufacturing processes, wherein the powder mixture includes a first powder having powder particles of a first thermoplastic polymer material, and a reinforcement material that is at least partially embedded in the powder particles of the first powder and / or adhered to the surface of the powder particles of the first powder. The second powder includes powder particles of a second thermoplastic polymer material which is the same as or different from the first thermoplastic polymer material. The powder particles of the second powder do not include the reinforcement material or include it only in an amount of at most 50% by weight relative to the amount of the reinforcement material in or on the powder particles of the first powder.

Sintering methods comprising (a) providing a layer of powder material on a platform; (b) projecting incident light from a source onto a surface area of the layer of powder material, wherein the incident light is projected for a sufficient time to densify the layer of powder material and form a layer of densified material; (c) optionally cooling the layer of densified material to a sufficient temperature to solidify or vitrify the layer of densified material to form a layer of sintered material; and (d) repeating steps (a) to (c) to form a sintered article in a layer-wise fashion are disclosed. The incident light may cause complete melting of the powder material or heat the powder material above its glass transition temperature. In general, the incident light is projected simultaneously and for a time span substantially the same as formation of the layer of densified material.

The invention relates to a device for decoupling a process chamber 21 of a machine tool from a powder conveying area which is set up for receiving and / or dispensing material powder 33, wherein the machine tool is set up for the layer-by-layer construction of a workpiece by means of applied material layers from the material powder 33 and the device is characterized in that at least one activatable sealing element 2, 3, 4, 5 is provided for decoupling the powder conveying area from the process chamber 21.

The invention relates to an additive manufacturing machine (4) comprising:-a manufacturing enclosure (49) equipped with a glove box (251):-a powder transport circuit (42):-a power source configured to melt the powder in the manufacturing zone (63); and-a collection circuit (57) configured to collect powder from the transport circuit (42) and transport the collected powder to an outlet of the collection circuit (57), the outlet of the collection circuit being located above a reception zone (281), the reception zone (281) being different from the manufacturing zone (63) and located opposite the outlet of the collection circuit (57), and the gloves (251) being configured to handle an object located in the enclosure (49) and to reach the reception zone (281).

An apparatus for mixing and / or conditioning powdery materials through fluid-free fluidization comprises a movably supported container that defines a first processing chamber for receiving powdery material; an oscillation generator by which a powdery material located in the processing chamber can be subjected to an oscillation, in particular a sinusoidal oscillation, during operation; and a control unit that controls the oscillation generator.

The utility model relates to the technical field of additive manufacturing, in particular to a one-drag-N optical path system for LPBF forming and a 3D printer. The light path system comprises a first movable mirror base, a first spectroscope, a first linear driving unit and a first reflecting mirror. Wherein the first movable lens base is provided with a first light hole, and the first spectroscope is arranged in the first light hole; the first spectroscope is configured to be capable of dividing a laser beam projected on the first spectroscope into a reflected beam and a transmitted beam; the first linear driving unit can drive the first movable lens base to move linearly. In use, after a laser beam is projected to the first spectroscope, a transmission beam is projected to a first laser demand end, a reflection beam is reflected to the first reflector, and the first reflector reflects the reflection beam to a second laser demand end. The laser beams of one laser can be supplied to the two laser demand ends, the high-power laser can be used, and compared with the mode that each printing device is provided with a low-power laser, the overall cost is lower.

The invention discloses an automobile energy absorption box and a preparation method thereof, and relates to the technical field of automobile collision safety, the automobile energy absorption box comprises a core body front end structure and a core body rear end structure, the core body front end structure is formed by core body front end structure cell element arrays, the core body rear end structure is formed by core body rear end structure cell element arrays, and the core body rear end structure is formed by core body rear end structure cell element arrays. Core body front end structure cell elements and core body rear end structure cell elements are all surrounded by outer side structures surrounding inner side structures, the outer side structures are negative Poisson's ratio structures, the inner side structures are positive Poisson's ratio structures, impact energy is resisted by means of multiple deformation characteristics of torsion, compression and expansion of positive and negative Poisson's ratio synergistic structures, kinetic energy brought by impact is fully absorbed, and the impact resistance is improved. And SLM integral forming is adopted, the defects caused by manufacturing and assembling of a traditional energy absorption box are overcome, and the reliability and durability of the energy absorption box are improved.

A three-dimensional powder bed fusion additive manufacturing (PBF-AM) apparatus (10, 10B) includes a build plate (22), a powder supply device (16), an irradiation device (14), a detection unit (40, 80), and a shielding member (30, 91). The powder supply device (16) supplies a powder material (32) to the build plate (22) to form a powder layer. The irradiation device (14) irradiates the powder layer with a primary ray (15). The detection unit (40, 80) detects backscattered electrons (61) generated when the powder material (32) is irradiated with the primary ray (15). The shielding member (30, 91) openably and closably covers a detection surface of the detection unit (40, 80).

To provide a method of forming highly spherical carbon nanomaterial-graft-polyolefin (CNM-g-polyolefin) particles.SOLUTION: The method may comprise: mixing a mixture comprising (a) a carbon nanomaterial-graft-polyolefin (CNM-g-polyolefin), (b) a carrier fluid that is immiscible with the polyolefin of the CNM-g-polyolefin, optionally (c) a thermoplastic polymer not grafted to a CNM, and optionally (d) an emulsion stabilizer at a temperature higher than a melting point or softening temperature of the polyolefin of the CNM-g-polyolefin and the thermoplastic polymer, if included, and at a shear rate sufficiently high to disperse the CNM-g-polyolefin in the carrier fluid; cooling the mixture to below the melting point or softening temperature to form the CNM-g-polyolefin particles; and isolating the CNM-g-polyolefin particles from the carrier fluid.SELECTED DRAWING: Figure 1

An apparatus includes at least one laser source and a print bed. A light valve array having at least three optically addressable light valves is positioned to direct differing images at the print bed. Optics to direct multiple beams derived from the at least one laser source can be positioned to direct light toward and from the optically addressable light valves.

A method of shaping a shaping material, the shaping material including a powder of a fluororesin, the powder of the fluororesin having a static bulk density of 0.3 g / ml or more and 1.5 g / ml or less, and the powder of the fluororesin having a particle diameter of 10 μm or more and 300 μm or less in terms of D50.

We describe a system for use in an apparatus for producing a three-dimensional workpiece using an additive layer manufacturing technique, the system comprising: an irradiation unit configured to selectively irradiate an irradiation plane with an irradiation beam, and a control unit coupled to the irradiation unit and configured to control the irradiation unit to modulate, as a function of a local process parameter when producing the three-dimensional workpiece, an irradiation beam property of the irradiation beam.

A method for controlling the operation of a laser device (12) for use in a laser materials processing technique comprising the steps: a) for a first time interval, controlling the laser device (12) so as to emit laser radiation at a first laser power; b) after expiry of the first time interval, controlling the laser device (12) so as to emit laser radiation at a second laser power for a second time interval, the second laser power being higher than the first laser power and exceeding a processing threshold value suitable for processing a material in the laser materials processing technique; and c) compensating a delay between the start of the control of the laser device (12) so as to increase the laser power from the first laser power to the second laser power at the beginning of the second time interval and the actual emission of laser radiation at the second laser power independent of the second laser power.

To solve the following problem: a small region where there is an excess or shortage of cumulative energy density, which occurs when an energy beam having an uneven energy density distribution in a cross-section is scanned on the modeling surface, could not be visually obtained.SOLUTION: An apparatus for creating modeling data 30 that creates the modeling data for controlling a three-dimensional additive manufacturing device 10 that creates an object by melting the cross-sectional shape of each layer with a beam, includes a display control part 305 for generating data indicating a distribution of an irradiation energy density accumulated in a target layer by beam scanning of the target layer based on the modeling data and for outputting the data to a display device 42.SELECTED DRAWING: Figure 5

An information processing apparatus includes a defect detection area setting unit (72) configured to set, on the basis of information input from an input unit (60), an area inside a predetermined amount from a surface of a formed object manufactured by a three-dimensional powder bed fusion additive manufacturing (PBF-AM) apparatus (1) as a defect detection area, and a defect detection unit (74) configured to detect a defect present in the formed object on the basis of layer data obtained for each layer in which the formed object is powder-bed-fusion additively manufactured, to identify a defect detected in the defect detection area as a defect leading to a quality defect, and to output defect information on the identified defect.

An apparatus performs three-dimensional shaping by irradiating metal powder with laser to fuse the powder and solidifying the fused powder to form a thin layer, which are repeatedly perfumed, and stacking the formed thin layers. The apparatus cuts the formed thin layers every time a predetermined number of layers have been formed based on cutting data, thereby improving the shaping accuracy of a shaped object. The cutting data defines a shape to be cut, which may a shape S3 obtained by reflecting a displacement d1 between a target shape S1 and a shape S2 including a deformation predicted by a simulation, onto the target shape S1, or a shape S5 obtained by reflecting a displacement d2 between the target shape S1 and a shape including a further predicted deformation, onto the shape S3.

Provided are: a method and a device for determining the degree of deterioration of a shaping powder which enable shaped objects to be inhibited from decreasing in mechanical property or dimensional accuracy; a method and a device for producing a reclaimed shaping powder; and a method and a device for producing a three-dimensional shaped object.　A dispersion obtained by dispersing a shaping powder in a solvent is examined for 1H nucleus spin-spin relaxation time T2 using a pulsed NMR device. The specific surface area of the shaping powder is calculated on the basis of the 1H nucleus spin-spin relaxation time T2 of the dispersion and the 1H nucleus spin-spin relaxation time T2 of the solvent. The specific surface area of a shaping powder is apparently increased or reduced by preheating within a powder bed or by heat due to irradiation with laser light or an electron beam. The specific surface area of the shaping powder can hence be used as an index to the degree of deterioration of the shaping powder.

Device for separating pollutants and / or particles from a process exhaust gas stream, in which a process raw gas flows by means of a compressor towards at least one filter element and through the at least one filter element; wherein the at least one filter element is arranged in a chamber and a metering device for a powdered additive is arranged upstream of the at least one filter element in the flow direction of the process raw gas, with which the additive can be supplied to the process raw gas. characterized in that wherein a storage container (A) for the powdered additive is arranged on the dosing device such that the powdered additive is dispensed onto a surface of at least one sieve (D) and that at least one sieve (D) can be set into vibration by means of a device (B) and / or vibrations can be coupled into the sieve (D) that act on the sieve (D); wherein characterized by the fact that The mesh size of the at least one sieve (D) and the particle size of the powdered additive are selected such that particles of the powdered additive only pass through the sieve (D) if the at least one sieve (D) has been set into vibration or the sieve (D) is vibrating and particles that have passed through the at least one sieve (D) can be fed into the process raw gas stream and are deposited as part of a filter cake on the at least one filter element, wherein two sieves (D) are arranged decoupled from each other so that independent, unhindered vibration of one of the two sieves (D) or both sieves (D) is possible.

The invention refers to an apparatus for powder-based additive manufacturing of three-dimensional structures on a platform (4). The apparatus comprises a powder delivery mechanism (100) with a first powder chamber (11) for a first powder with a first powder outlet, and a second powder chamber (12) for a second powder with a second powder outlet. In addition, the powder delivery mechanism (100) comprises a gating mechanism (3) with a first slot (31) and a second slot (32), wherein the powder delivery mechanism (100) and / or the platform (4) are rotatable around a platform center axis (10) of the platform (4), wherein the gating mechanism (3) is arranged such that the first slot (31) defines an outlet surface of the first powder outlet and the second slot (32) defines an outlet surface of the second powder outlet, wherein the gating mechanism (3) is displaceable relatively to the first powder outlet and / or the second powder outlet.

A resource management system (39) manages a supply of resource material and / or resource items to a plurality of at least two additive manufacturing machines (3) for additive manufacturing. The resource management system (39) includes a control unit (41) that is configured to receive a signal indicative of a demand for resource material and / or resource items of any of the additive manufacturing machines (3). The control unit (41) is configured to schedule the supply of demanded resource material and / or resource items according to a predetermined prioritization scheme for resolving demand conflicts.

The utility model relates to an SLS selective laser sintering 3D printer precise powder supply mechanism which comprises a powder storage box, a powder stirrer and a precise powder falling hopper are arranged in the powder storage box, one end of a rotating shaft of the powder stirrer is driven by a motor, the precise powder falling hopper is located on the lower side of the powder stirrer and located at a powder outlet of the powder storage box, and the precise powder falling hopper is provided with a powder falling cavity with the wide upper portion and the narrow lower portion. Partitions formed in the powder falling cavity evenly divide the powder falling cavity into a plurality of powder falling channels, a powder control shaft in the length direction of the powder falling opening is arranged at the position, close to the powder falling opening, in the powder falling cavity, the shaft diameter and length of the powder control shaft are precisely matched with the width and length of the powder falling opening, and a plurality of V-shaped powder grooves in the axial direction are evenly formed in the surface of the powder control shaft. One end of the powder control shaft is driven by a motor. According to the precise powder supply mechanism of the SLS selective laser sintering 3D printer, single-time quantitative precise powder supply can be achieved, it is guaranteed that powder evenly flows out of the powder outlet, and therefore a foundation is laid for providing an excellent powder laying effect for a follow-up powder laying mechanism.