1860results about How to "High forming precision" patented technology

The invention provides a ceramic slurry preparation and 3D (three dimensional) printing light curing molding method. 25-85vol% of ceramic powder and 15-75vol% of an optical resin premix solution are mainly involved, and the method includes: A), preparation of the optical resin premix : namely stirring a low polymer, a reactive diluent, a photoinitiator, a dispersing agent, a photosensitizer and a sensitizer according to a certain proportion under intermediate speed for 0.5-3 hours to enable the components to be mixed evenly; B), placing the premix solution and the ceramic powder in a ball mill according to certain volume for ball-milling for 5-15 hours to prepare the ceramic slurry high in solid content and low in viscosity; subjecting the ceramic slurry to curing molding layer by layer gradually on a 3D light curing molding machine to obtain a ceramic green body prior to aftertreatment of drying, degreasing, sintering and the like to obtain ceramic part. The method is high in preparation molding precision and free of molds to prepare complex structure parts, the ceramic product can reach more than 92% in density, 320-1750MPa in flexural strength and 1800-4500MPa in compression strength.

A manufacturing method for an ink jet head having an ink ejection pressure generation element for generating energy for ejecting ink, and an ink supply port for supplying the ink to an ink jet head, including the steps of preparing a silicon substrate; forming, on a surface of the silicon substrate, the ink ejection pressure generation element and silicon oxide film or silicon nitride film; forming anti-etching mask for forming an ink supply port on a back side of the silicon substrate; removing silicon on the back side of the silicon substrate at a position corresponding to the ink supply port portion through anisotropic etching; forming an ink ejection portion on a surface of the silicon substrate; and removing the silicon oxide film or silicon nitride film from the surface of the silicon substrate of the ink supply port portion.

The invention relates to a magnetorheological-material-based 3D (Three-Dimensional) printing type rapid prototyping method and device. According to the principle of magnetorheological effect, a magnetorheological material is used as a 3D printing raw material; and a 3D solid model is constructed by spraying the magnetorheological material on a workbench with a magnetic field, rapidly solidifying and prototyping the sprayed magnetorheological material, and then depositing the treated material layer by layer. A computer is provided with three control circuits; one circuit is used for controlling the flow of a driving pump, namely the flow at a spray head; another circuit is used for controlling the 3D motion of the spray head through a servo mechanism; and the rest circuit is used for controlling colour mixing and allocating of a colourized ink box. The magnetorheological material is solidified and prototyped by utilizing the magnetic field generated by an electromagnet. According to the magnetorheological effect of the magnetorheological material, a temperature control module in the traditional melting, spraying and rapid prototyping type 3D printing method is replaced by the magnetic field; in addition, the device disclosed by the invention is also different from a high-pressure electric field required by an electrorheological fluid effect, has the advantages of being simple in structure, low in energy consumption and cost, capable of realizing the microminiaturization and the like, and can be applicable to the fields of process design, art and entertainment, prosthesis model and the like.

The invention relates to a ceramic material for 3D light curing formation printing and a preparation method of a ceramic element. The ceramic material is prepared from 30 to 70 vol percent of ceramicpowder and 30 to 70 vol percent of photosensitive resin premixed liquid, wherein the photosensitive resin premixed liquid is prepared from 37 to 50 weight percent of oligomers, 30 to 60 weight percentof reactive diluents, 0.1 to 5 weight percent of photoinitiators, 1 to 5 weight percent of dispersing agents, 0.1 to 0.6 weight percent of ultraviolet blocking agents, 0 to 0.05 weight percent of polymerization inhibitors, 1 to 4 weight percent of anti-foaming agents, 0.5 to 2.35 weight percent of anti-settling agents and 0.3 to 3 weight percent of leveling agents. In the degreasing and sinteringpost-treatment work procedures, specific parameters are used, so that a sintering element can reach good sintering density and mechanical performance. By optimizing the composition and the proportionof light curing ceramic resin, and selecting the excellent dispersing agent combination and the reasonable consumption, the ceramic powder can be better dispersed in the resin; the problems that theexisting light curing ceramic resin has poor flowability and low formation precision, and that a finally prepared ceramic product can easily generate cracks or deformation, and the like are solved.

A wiring base board and a method of producing thereof relate to a wiring base board of a multilayer structure, and make it possible to perform various kinds of transmission modes such as differential transmission at via parts. For this wiring base board, an insulating substrate is used. The wiring base board has a first via hole part which is formed in the insulating substrate and provides a plurality of circumferential face parts, and a plurality of second via hole parts, forming concentric circles with the circumferential face parts, which are formed in the first via hole part through an insulator. By this, a differential wiring structure and coaxial structure parts are constituted.

The invention discloses a fused deposition three dimensional printing nozzle and a printer. The fused deposition three dimensional printing nozzle comprises a screw machine barrel, a nozzle and screw shaft, wherein the nozzle is arranged at the lower portion of the screw machine barrel, the screw shaft is arranged in the screw machine barrel, the upper end of the screw shaft is connected with a motor shaft through a shaft coupling, the lower half segment of the screw shaft is provided with a thread slot, the upper portion of the barrel body of the screw machine body is provided with branch tubes used for mounting fed filament plasticizing tubes, and the periphery of the screw machine barrel and the branch tubes is provided with heaters. The screw machine barrel is used as a filament fusion and mixing container, the plasticizing tubes arranged in the branch tubes are used as filament inlets, the heaters are used to heat filaments in the plasticizing tubes and the screw machine barrel in order to fuse the filaments, and driving force is generated through screw rotation in order to stir and mix the fused filaments entering the screw machine barrel, push the mixed filaments into the nozzle and realize extrusion molding, so the filaments can be effectively fused and extruded.

The invention discloses a laser material increasing and decreasing combined manufacturing method and device. Specifically, the method comprises the steps that a geometric model of an entity part is established, a scanning path of a laser for quick laser forming in a selected area is planned, and a scanning path of a laser for laser material decreasing manufacturing is planned; a forming cavity is vacuumized and filled with protection gas; a layer of powder is laid in a forming area through a powder spreading system; laid materials to be formed are scanned through the laser for quick laser forming in the selected area, and structure forming is carried out; the contour edge of the formed structure is scanned by the pulse laser for laser material decreasing manufacturing along the planned path to remove coarse parts on the surface; the operation of powder spreading, quick laser forming in the selected area and laser material decreasing manufacturing is repeated until a final three-dimensional entity part is obtained. The invention further provides the laser material increasing and decreasing combined manufacturing device. By using the device and the method for manufacturing increased and decreased materials, the forming precision is improved; in addition, the laser is used for both increasing and decreasing the materials, so that better compatibility is achieved, and control is easier.

A deposition mask for forming a thin film pattern having a predetermined shape on a substrate by deposition, includes a resin film that transmits visible light and has an opening pattern penetrating through the resin film and having the same shape and dimension as those of the thin film pattern so as to correspond to a preliminarily determined forming region of the thin film pattern on the substrate.

The invention discloses a melt differential three-dimensional printer. The melt differential three-dimensional printer mainly comprises a material melting unit, a micro-droplet jetting unit, a cylindrical-coordinate system molding unit and a rack, wherein a servo motor drives a screw rod to rotate in the material melting unit; a heater, which is fixedly arranged inside a machine cylinder, ensures that granules are entirely plastified through temperature regulation; a molten material is transmitted by the screw rod to the micro-droplet jetting unit; in the micro-droplet jetting unit, the molten material is transmitted into a valve body through a hot runner in a runner plate; a linear servo motor drives a valve needle to do reciprocating motion in the valve body so as to quantitatively and intermittently squeeze the molten material out of a nozzle to form melt micro-droplets; in the cylindrical-coordinate system molding unit, the molten micro-droplets are injected to a bearing table for cooling and deposition molding; the servo motors in the left-right direction and in the vertical direction are respectively engaged with the corresponding screw rod to rotate so as to drive the material melting unit and the micro-droplet jetting unit to move along the left-right direction and the vertical direction; a circumference servo motor drives the bearing table with a worm gear to rotate through a worm rod so as to realize three-dimensional movement under a cylindrical-coordinate system.

This invention relates to an electromagnetic progressive shaping method for plate moving coils and a device, in which, said device includes a computer control system, an electromagnetic force generation system and a three-shaft digital control shaping system including a plate clamping elevating device, a supporting model frame and an electromagnetic shaping clamping rod, in which, the computer controls the coil to move downward along the contour of a model profile from the top according to the contour data of the model profile and the plate is formed partly relying on the magnetic force of coil till to the bottom of the model and finish the entire process.

The invention relates to a thin-walled closure head high accuracy spinning forming method. The invention is to resolve the problem of big size closure head, thin wall thickness, high accuracy size and high difficulty of forming. Spinning machine is started to make rolling wheel do axial and circumferential movement along track loaded into program in head while spinning, meanwhile main axle of spinning machine drives core and bar plate to spin. When rolling wheel rolls to the distance of 20mm from edge it quits. The invention has the advantages of simple process and high accurate product.

The invention discloses a preparation method of SiCf/SiC ceramic matrix composite turbine blades, which is characterized in that through analyzing the stress distribution of a blade in an application state, based on this point, a performance-controllable SiCf/SiC ceramic matrix composite turbine blade is manufactured through the designing and adopting of processes such as rapid forming, high-performance continuous yarn braiding, gel-casting, reactive sintering, and the like. According to the method, parts such as blades and the like are manufactured by using heterogeneous materials, the contradiction between the uniformity and nonuniform loaded structure of materials is solved, and the performances of materials can be set flexibly according to the bearing needs of manufactured parts; and prepared SiCf/SiC ceramic matrix composite turbine blades have the characteristics of near-net forming variable-cross-section complex structure, controllable material performance, flexible machining, short production cycle, low cost, and the like, and can be applied to the development and manufacturing of high-temperature-resistant complex structured parts for aerospace and the like.

The semiconductor device includes: a transistor having a gate electrode formed on a semiconductor substrate and first and second source/drain regions formed in portions of the semiconductor substrate on both sides of the gate electrode; a gate interconnect formed at a position opposite to the gate electrode with respect to the first source/drain region; and a first silicon-germanium layer formed on the first source/drain region to protrude above the top surface of the semiconductor substrate. The gate interconnect and the first source/drain region are connected via a local interconnect structure that includes the first silicon-germanium layer.

The invention relates to a laser fast forming detection system and method for powder laying evenness and belongs to the technical field of laser fast forming powder laying detection. The laser fast forming detection system and method for powder laying evenness are provided and can monitor whether powder is laid flatly or not in real time and effectively improve the forming quality. According to the adopted technical scheme, a powder laying device, a powder supplying cylinder, a forming cylinder and a material collecting cylinder are arranged in a forming cavity; a laser device and an image collecting device are arranged on the top of the forming cavity; light supplementing lamps are arranged on the two sides of the forming cavity; and the laser device, the image collecting device and the light supplementing lamps are connected with the control system. The laser fast forming detection system and method for powder laying evenness can be widely applied to powder laying evenness detection for laser fast forming.

The invention discloses a multi-material laser direct writing conformal system and a method. The system comprises a vacuum seal case, a multi-joint mechanical arm, a multi-material laser direct writing head and a control system for controlling the constituent parts, wherein the mechanical arm and the laser direct writing head are arranged in the vacuum seal case; the laser direct writing head comprises a direct writing head body, a laser and at least two groups of material cylinders; a material channel and a laser focusing channel communicated with the laser and the material cylinders respectively are arranged on the direct writing head body; and the at least two groups of material cylinders are arranged on the direct writing head body in parallel. A particular process is as follows: the mechanical arm drives a workpiece to move along a set path; a material controller selects the corresponding material cylinders; a discharge head delivers and allows materials to be attached to the surface of the workpiece; and at the same time, laser light emitted from the laser focusing channel carries out solidifying or sintering forming on the attached materials. According to the invention, a control process is simple, the forming precision is high, continuous production is achieved, and production efficiency is improved.

This invention relates to integrate composite quickspeed forming method composed light solidifying forming method and fusion sedimentation and devices. Form outer fine contour with light solidifying forming method and inner block zone. The device comprises corresponding two systems and form-head auto switching system controlled by microcomputer control system. This invention integrates advances of two quickspeed forming methods and overcomes their shortcomings; the former has high forming precision, strong preparation details capability and well surface quality; the latter fits to large range materials and needs low cost. It fits to many members precision preparation.

The invention discloses an electromagnetic forming device and an electromagnetic forming method for a micro fuel cell metal bipolar plate microchannel, and relates to a micro fuel cell metal bipolar plate microchannel forming device and a micro fuel cell metal bipolar plate microchannel forming method so as to solve the problem of matching difficulty between micro male and female dies in the process of forming a microstructure on a metal thin plate based on stamping and other conventional plastic deformation means. The device comprises an upper template, a coil, a driving sheet, a die, a lower template and a fastening bolt; a groove is formed on the surface of a supporting frame so as to accommodate the coil; a circular through hole is formed in the center of the bottom of the groove so as to accommodate the die; the driving sheet is arranged above the die; and an axial lead of the coil is in upper and lower directions. The method comprises the following steps of: discharging to the coil to excite a strong pulsed magnetic field; generating induced eddy on the surface of the driving sheet so as to generate a magnetic field opposite to the magnetic field of the coil in the transient strong pulsed magnetic field; and driving a plate blank to make die attaching motion by using the driving sheet under repellent applied force between the magnetic fields. The invention is used for micro-forming.

There are provided an automotive interior component, in which a decreased weight and a reduced cost are achieved and safety measures at the time of side collision is taken, and a method for manufacturing the automotive interior component. A door trim main body of a door trim is made up of a foamed resin base material having a light weight and shape holding properties and a resin mold portion integrated with a part of the inside surface side of the foamed resin base material. A resin flash is leaked intentionally and forcedly around a part of the resin mold portion to form a reinforcing flash portion. Thereby, the resin mold portion is supported firmly, and a sharp edge of the resin mold portion is avoided by the reinforcing flash portion at the time of side collision. Also, the molding accuracy is increased by producing the reinforcing flash portion intentionally and forcedly.

The invention discloses a flexible stretch-forming device and a method for carrying out stretch-forming on a plate by utilizing the flexible stretch-forming device and solves the technical problem that the stretch-forming accuracy of a flexible stretch-forming device for the molded surface of a reconfigurable unidirectional continuous die is low. The technical scheme includes that the flexible stretch-forming device comprises an industrial manipulator, a heating forming head, a power supply, a multipoint die, a nail post and a polyurethane elastic cushion. The nail post is mounted on the base of the multipoint die, the polyurethane elastic cushion is positioned above the nail post, the lower surface of the polyurethane elastic cushion is attached to the discrete surface formed by the nail head of the nail post, the plate is positioned above the polyurethane elastic cushion, the lower surface of the plate is attached to the upper surface of the polyurethane elastic cushion, the heating forming head is positioned above the plate, and the spherical head surface of the heating forming head is contacted with the upper surface of the plate. According to the flexible stretch-forming device and the method for carrying out stretch-forming on the plate by utilizing the flexible stretch-forming device, the electromagnetic induction heating forming head is adopted to locally heat the plate in the stretch-forming process, the local heat effect of the region can reduce the deformation resistance of the plate, the plasticity is improved, the resilience value is reduced, and the forming accuracy of the plate is improved.