275results about "Processes with additional operations" patented technology

The invention discloses a photocuring 3D printing mechanism method for multi-material cooperative spraying, and relates to the field of cooperative control, and the photocuring 3D printing mechanism method comprises the following steps: layering a model, generating a material distribution map, and labeling a functional area and a transition area; a multi-nozzle array is used for accurately positioning and spraying according to the atlas; a gradual change path is planned in the transition area, and gradient change of material components is achieved through cooperative spraying; a partition curing strategy is adopted, ultraviolet light full curing and visible light semi-curing are adopted, and leveling is promoted in combination with micro-vibration; spraying a penetrating agent between layers to form a mechanical interlocking enhanced interface; based on visual online defect detection, printing parameters are fed back and adjusted in real time through a CNN model. The device and the method have the advantages that accurate mixing of multiple materials is realized through cooperative spraying of the multiple piezoelectric sprayers and gradual change path planning, and real-time defect detection and correction can be realized by matching with differentiated photocuring, high-frequency micro-vibration leveling and interlayer penetrating agent interlocking, so that high-precision multi-material functional component forming is efficiently completed.

The invention discloses a three-dimensional printing method and three-dimensional printing equipment for manufacturing a target object. The three-dimensional printing method comprises the following steps: curing a first material to form a first part of a first layer in a plurality of target layers; curing the second material to form a second portion of the first layer of the plurality of target layers; curing the first material to form a first portion of a second layer of the plurality of target layers on the first portion of the first layer, the total thickness of the first portion of the first material being greater than the total thickness of the second portion of the second material; the steps are repeated to form a plurality of target layers of the target object. According to the scheme provided by the invention, various risks caused by the positioning accuracy of movement in the vertical direction are reduced.

The invention relates to the technical field of 3D printing, and discloses a fiber reinforced composite material 3D printer and a printing method, current deposition tows are heated / cooled under the action of a preset interlayer pressing force through an interlayer pressing device, interlayer fusion can be promoted, the interlayer bonding strength can be improved, the heat history in the wire cooling process can be eliminated, and the 3D printing quality of the fiber reinforced composite material is improved. The crystallization behavior, the grain size and the grain distribution of a polymer in a printing wire material are controlled, and the microscopic uniformity of a composite material printing product is improved. The side face and the upper surface of the current deposition tow are subjected to hot-pressing shaping through the inter-channel pressing device, meanwhile, secondary hot-pressing is conducted on the adjacent printing layer deposition tow, resin of the current deposition tow and resin of the adjacent printing layer deposition tow can be melted and flow, so that the inter-channel gap between the adjacent printing layers is filled, and the printing effect is improved. And the inter-track bonding strength is improved.

The present disclosure provides a 3D printer including a receiving surface for accepting the accumulation of material layers, and a gantry having a shaft and carriage that is translated along the shaft, and an extruder assembly that is articulated to rotate a printing plane, wherein the extruder assembly is attached to the carriage and the articulated extruder assembly is manipulated to rotate the printing plane away from parallel with the receiving surface.

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.

The invention discloses a three-dimensional printing method and three-dimensional printing equipment for manufacturing a target object. The three-dimensional printing method includes: forming a first plurality of layers of a target object using a base material; and forming a second plurality of layers of the target object using the first material and a second material different from the first material, including: curing the first material to form a first portion of the first layer of the second plurality of layers; curing the second material to form a second portion of the first layer of the second plurality of layers; curing the first material to form a first portion of a second layer of the second plurality of layers on the first portion of the first layer; curing the second material to form a second portion of a second layer of the second plurality of layers on the second portion of the first layer; the steps are repeated to form a second plurality of layers of the target object. According to the method, at least two materials can be printed on the same layer, so that the printing effect of multiple materials (such as colors) is achieved.

The present disclosure provides systems and methods for printing three-dimensional (3D) objects. A system for printing a 3D object may comprise at least one platform configured to hold a film of at least one mixture, a deposition unit for providing the film of the at least one mixture, and a building unit for forming at least a portion of the 3D object from the film of the at least one mixture. The system may further comprise a controller operatively coupled to the at least one platform. The controller may be configured to direct the at least one platform to move from the deposition unit to the building unit, or vice versa, along a plurality of non-overlapping paths.

The invention provides a method for producing a 3D item (1) by means of fused deposition modelling, the method comprising: a 3D printing stage comprising layer-wise depositing 3D printable material (201), to provide the 3D item (1) comprising 3D printed material (202), wherein the 3D item comprises layers (322) of 3D printed material, wherein the 3D printable material comprises a thermoplastic material (401) and a photocatalytic material (409) wherein during at least part of the 3D printing stage the method comprises producing pores (423) in the 3D printable material.

The present disclosure is directed to a construction element produced by additive manufacturing, an additive manufacturing system for producing the construction element and a method for manufacturing the construction element. The construction element includes an outer layer. The outer layer is configured to define or form an enclosure. The construction element further includes an inner matrix. The inner matrix is formed within the enclosure. The outer layer and the inner matrix are formed integrally, by depositing successive layers using an additive manufacturing system. The inner matrix is defined by a first layup and a second layup. The first layup is laid along a first direction and across the enclosure. The second layup is laid juxtaposing the first layup. The first layup and the second layup define a plurality of air pockets in the inner matrix. Further, a filler material is infused into at least some air pockets of the plurality of air pockets.

Methods of three-dimensional printing can include iteratively applying a polymer build material as individual layers to a powder bed, where the polymer build material includes from about 80 wt % to 100 wt % polymer build particles, and based on a three-dimensional object model, selectively applying a binder agent including an aqueous liquid vehicle and polymer binder particles onto the individual layers of the polymer build material. The polymer binder particles have or are capable of having a melting temperature lower than a melting temperature of the polymer build particles. The methods can include exposing the powder bed to heat at a temperature less than a melting point of the polymer build particles but greater than a melting temperature of the polymer binder particles. The heat causes the polymer binder particles to melt to adhere the polymer build particles together to form a three-dimensional object.

A processing apparatus 110 comprises: a forming stage 112 that supports an article ST formed from a material M and can rotate in a predetermined rotation direction around a rotation axis; a crossing frame that is arranged above the forming stage and has a first frame 124-1 formed along a first straight line L1 passing through the rotation axis RX and a second frame 124-2 formed along a second straight line L2 passing through the rotation axis and different from the first straight line; a first device that is supported by the first frame, that can move along the first straight line, and that is used for forming the article; and a second device that is supported by the second frame, that can move along the second straight line, and that is used for forming the article.

This invention provides a three-dimensional molding apparatus and method that improve molding accuracy in three-dimensional molding, which involves repeatedly melting and solidifying powder and then cutting it to form a three-dimensional object. [Solution] In a powder bed type three-dimensional molding apparatus, a laser is irradiated onto metal powder to melt and solidify the powder, forming thin layers, and these thin layers are stacked to create a three-dimensional object. At this time, the molding accuracy of the object is improved by cutting off the formed layers after each predetermined layer has been formed, such as 10 layers. The cutting data that defines the cutting shape uses a shape S3 obtained by reflecting the displacement d1 between the desired shape S1 and the shape S2 whose deformation has been predicted by simulation onto shape S1. Alternatively, the deformation of shape S3 may be further predicted to obtain a displacement d2 between it and shape S1, and a shape S5 that reflects this displacement may be used as the cutting data.

A web-based CBAM printing system and method comprises a machine and improvements therein that permit accurate image-to-edge registration for printed cross-sectional layers, simultaneously with edge-to-edge registration among sheets that make up a build block, all in combination with high-precision edge cutting of the web and bow-prevention structures to facilitate stacking.

An apparatus for processing a wax mold to smooth it to a predetermined smoothness or mold height and filling the mold with paste. The apparatus has one or more cutting blades and cleaning brushes, the cutting blades rotate over the wax to polish it to the predetermined smoothness or mold height, and the cleaning brushes contact the cutting blades to remove the wax from the cutting blades.

The present invention relates to a method for producing a composite body (2) from at least two sub-bodies (1), wherein at least one of the sub-bodies (1) is produced by an additive manufacturing process, and wherein the at least two sub-bodies (1) are exposed in a chamber (6) to a solvent atmosphere (7) so that a surface of the sub-bodies (1) is smoothed. The invention also relates to a composite body (2) produced according to the method. For the method, it is proposed that the at least two sub-bodies (1) are positioned in the chamber (6) such that they touch at at least one joining surface (5), and thus a metallurgical bond is formed between the at least two sub-bodies (1) at the at least one joining surface (5) by the solvent atmosphere (7).

[Problem] To provide a product made of fiber-reinforced plastic that is lightweight and has high mechanical strength. [Solution] A method for producing a fiber-reinforced plastic product including fibers and a resin, the method including an additive manufacturing step, a first pressurization step, and a second pressurization step, in which the second pressurization step is a step of pressurizing, under heating, a product obtained through the first pressurization step, and of obtaining a product having a volume smaller than a volume of the product obtained through the first pressurization step.

A method of structurally reinforcing 3D printed channel letters is provided to enhance the strength of channel letters. A reinforcing fortifying layer is 3D printed in the space between the side walls of the channel letter and an additional outer layer is printed over the fortifying layer in order to encapsulate the fortifying layer.

A method for manufacturing a graphene-incorporated UHMWPE structure, the method comprising the step of i. providing a build chamber having a vertically movable platform defining a build plate, on which SLS In a 3D printing process, powder material may be sintered layer by layer, and the method further includes: ii. preheating a build chamber; iii. reducing the pressure in the build chamber and / or supplying an inert gas into the build chamber; iv. depositing a UHMWPE powder layer on a build plate to define a print bed; v. exposing a selected area of ​​the UHMWPE powder layer to at least one first laser light source to create a sintered region of the UHMWPE powder layer; vi. exposing a selected area of ​​the UHMWPE powder sintered region to at least one second laser light source to induce graphene formation derived from the UHMWPE powder; vii. lowering the platform by one step corresponding to the thickness of the UHMWPE powder layer and depositing a further UHMWPE powder layer thereon; and viii. repeating steps (v) to (vii) until the structure is complete.

A system for producing a three-dimensional object from a fluid medium includes image processing units. The fluid medium is configured to solidify when subjected to a prescribed light stimulation. Each image processing unit includes at least one light emitting source configured to emit light, and at least one mirror system configured to reflect the light emitted by the light emitting source. The mirror system includes a manipulating system for adjusting the direction of the emitted light, a control system for controlling the manipulating system, and at least one optical element configured to manipulate the emitted light and to project the emitted light onto an area of a surface of the fluid medium to form an image on the surface. The image processing units are configured to form corresponding images on the surface, and are configured to be movable at least in a lateral direction relative to the surface.

The present invention features a liquid, solvent-free, silica precursor and two-photon 3D printing process to meet the increasing needs of high-precision glass micro-optics and address the major limitations of current three-dimensional (3D) printing optics. The printed optical elements may be fully converted to transparent inorganic glass at temperatures as low as 600° C. with shrinkages as low as 17%. The present invention includes a complete process chain, from material development, printing process, and performance evaluation of the printed glass micro-optics. 3D printing of glass micro-optics with isotropic shrinkage, micrometer resolution, low deviation peak-to-valley value (<100 nm), and low surface roughness (<6 nm) has been demonstrated. The present invention enables the rapid fabrication of complex glass micro-optics previously impossible using conventional glass optics fabrication processes.

Provided are methods of forming a three-dimensional object that include irradiating a resin composition of the invention with actinic radiation or light, thereby forming a three-dimensional intermediate, and then further reacting the three-dimensional intermediate to form the three-dimensional object. In some embodiments, resin compositions of the invention include a polyisocyanate such as, e.g., a reactive blocked polyisocyanate; a polyfunctional epoxy compound; a photoinitiator; optionally, a catalyst; optionally, a polyol and / or a polyamine chain extender; optionally, a reactive diluent; optionally, a pigment or dye; and optionally, a filler. Related resin compositions are also provided herein. Further, provided are three-dimensional objects formed by a method of the invention, including, e.g., objects formed of a polymer having at least one oxazolidinone linkage.

A method for interlocking a multi-material interface includes forming interlocking mechanisms on a body, the interlocking mechanisms forming protrusions and cavities, wherein the interlocking mechanisms and the body comprise a base material. The method further includes covering the protrusions and filling the cavities with a filling material using material extrusion.

A 3D printing system and control method are provided, the 3D printing system including a material extrusion device that extrudes molten material to print a current layer, and a preheating device that preheats a layer prior to the current layer before the current layer is printed, to heat the previous layer from a current temperature to a temperature more suitable for fusing with the current layer.

A multiple-axis hybrid manufacturing machine tool (1) for manufacturing a three-dimensional part, in particular a micro-part and / or a macro-part with a micro-feature. The multiple-axis hybrid manufacturing machine tool (1) extends in a first direction (1001), a second direction (1002) and a third direction (1003) that are perpendicular to each other. The multiple-axis hybrid manufacturing machine tool (1) comprises a vat photopolymerization three- dimensional printing module (100), a container module (200), a CNC processing module (300) and a platform module (400). The vat photopolymerization three-dimensional printing module (100) comprises a movable illumination device (101). The container module (200) comprises at least one photopolymer receiving container (201) for receiving a photopolymer material in liquid phase. The CNC processing module (300) comprises a movable spindle (301) for holding a milling tool (10) and / or a measuring tool. The platform module (400) comprises a movable build platform (401) that is arranged and configured for vat photopolymerization three- dimensional printing of a work piece and / or on a work piece, and preferably also for CNC processing of a work piece, on the build platform (401).

To provide a method for making 3D components having graded material properties.SOLUTION: There are provided method and system of using a roller-based deposition process to place two or more powders at some level of precision to build a multi-material, functionally-graded component. Instead of formulating a liquid ink by dispersing powder feed stocks (metal or ceramic) in some binder-solvent mixtures, there is detailed the use of two different types of fluid deposited in a digital form on a roller surface. The two different types of fluids generate a "wetted pixel" that subsequently can capture a specific powder type with an affinity only to that fluid. Alternatives such as electrostatics, electrophotography, and the like are also provided to be used exclusively or with fluids to create an affine pixel to a particular powder type.SELECTED DRAWING: Figure 2

A recoater supplies a predetermined amount of powder and spreads the supplied powder across a powder bed. The recoater includes a main shaft, a moving mechanism, and a powder guiding part. The main shaft rotates about an axis parallel to a surface of the powder bed. The moving mechanism moves a main shaft in a moving direction perpendicular to the main shaft and parallel to the surface of the powder bed. The powder guiding part is disposed around the main shaft along a predetermined inclination angle relative to the moving direction.

The invention discloses an SLA full-color staggered color layer 3D printing method and a printed object thereof, and belongs to the technical field of mechano-electronics. The structure of the interlaced color layer printed object comprises that the interlaced color layer structure comprises a covering color layer, an inner surface color layer, a base color layer and a main body resin structure; three layers are arranged from top to bottom: a covering color layer structure; an inner surface color layer and a base color layer; the main body resin structure is circulated and reciprocated; according to the construction method, an object printing method of a staggered color layer structure is adopted, and the main sequence is as follows: laying of the inner surface color layer, laying of the main body resin structure, laying of the color covering layer and finally laying of the main body resin structure. And the circulation is repeated, so that the high-precision printing of the color three-dimensional printing object is realized.

The invention relates to a support system for a production system and to a workpiece holder (8) for use in the support system. The support system comprises a base support (6), which is designed to be secured in a process chamber of the production system and which comprises at least one positioning element, and a workpiece holder (8), on which a workpiece can be produced according to a production method having a step of depositing a particulate raw material in layers. The workpiece holder (8) has a lower face (12) and a construction side as the upper face (11) which lies substantially opposite the lower face. The workpiece support (8) has at least one first positioning device on the lower face (12) for releasably attaching to the base support (6) of the production device in a precise position. The at least one positioning element (10) and the at least one first positioning device (14) are designed in a complementary manner and form a pin / hole pair. At least one section (87) of the pin is made of a first material with a first thermal expansion coefficient, and a section of the hole, said section controlling the positional accuracy, is made of a second material with a second thermal expansion coefficient. In a first alternative, the second thermal expansion coefficient is lower than the first thermal expansion coefficient such that a clamping effect is produced between the pin and the surrounding hole in the event of a temperature increase of the support system during the production method as a result of the expansion of the section (87) of the pin. In a second alternative, the first thermal expansion coefficient is lower than the second thermal expansion coefficient such that a clamping effect is produced between the pin and the surrounding hole in the event of a temperature increase of the support system during the production method as a result of the expansion of the mounting section (28, 42, 91) of the hole. The invention additionally relates to a method for producing a workpiece.

An additive manufacturing system, a build platform and a method of operating are provided. The build platform includes an interface section configured to couple with the additive manufacturing system. A base section is coupled to the interface section. A build volume is provided having at least one layer having at least one individually addressable element that includes at least one of a feature characteristic or functional characteristic.

This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of testing powder bed material for contamination. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a detector solution. The fusing agent can include water, an electromagnetic radiation absorber, and a first pigment reactant. The electromagnetic radiation absorber can absorb radiation energy and convert the radiation energy to heat. The detector solution can include water and a second pigment reactant. The second pigment reactant can be reactive with the first pigment reactant to form a colored pigment.