7393results about How to "High dimensional accuracy" patented technology

The present invention provides a method of making an image capture unit, which includes the steps of: providing an image sensor; attaching a plate on the image sensor; providing at least one cavity on the plate aligned with the image sensor; mounting lenses in the cavity of the plate, and attaching a cover on the plate to shield a margin region of each of the lenses.

In the manufacturing technology of an integrated MEMS in which a semiconductor integrated circuit (CMOS or the like) and a micro machine are monolithically integrated on a semiconductor substrate, a technology capable of manufacturing the integrated MEMS without using a special process different from the normal manufacturing technology of a semiconductor integrated circuit is provided. A MEMS structure is formed together with an integrated circuit by using the CMOS integrated circuit process. For example, when forming an acceleration sensor, a structure composed of a movable mass, an elastic beam and a fixed beam is formed by using the CMOS interconnect technology. Thereafter, an interlayer dielectric and the like are etched by using the CMOS process to form a cavity. Then, fine holes used in the etching are sealed with a dielectric.

A container closure formed from a synthetic resin as a single unit has a circular top panel wall and a cylindrical skirt wall extending downwardly from the peripheral edge of the top panel wall. An outer cylindrical sealing protrusion, inner cylindrical sealing protrusion and annular sealing ridge arranged therebetween, all having a predetermined shape and a predetermined size, are formed on the inner surface of the top panel wall. The thickness of the center portion of the top panel wall is reduced to a predetermined range and a plurality of ribs having a predetermined thickness are formed on the inner surface of the center portion of the top panel wall.

The invention provides a ceramic material for 3D (three-dimensional) light curing forming printing. The ceramic material is prepared from the following ingredients in percentage by weight: 25 to 85 weight percent of light curing resin and 15 to 75 weight percent of modified inorganic powder. The invention also further provides a preparation method and a use method of the ceramic material for 3D light curing forming printing. The ceramic material for 3D light curing forming printing provided by the invention is applicable to the preparation of a ceramic product by 3D light curing forming technologies such as the light curing laser fast forming and digital-based light processing projection curing forming. The defect of the current condition that the light curing forming technology in the prior art is not used for producing the ceramic product is overcome; the dimension precision of the obtained ceramic product is high; the 3D printing forming of various ceramic elements in complicated shapes can be realized; the ceramic material can be applied to aviation and aerospace industry, the medical field and the industrial field.

A liquid crystal display device comprising a main body case 3 having opposing side walls 31, 31 and other open portions 32, 32 and a relatively wide U-shaped bottom wall 30, a backlight unit 4 housed in the main body case 3, and an optical member 1 placed on the surfaces of both side walls 31, 31 of the main body case 3 while covering the backlight unit 4, and whose outer periphery is encased by reinforcing frames 6, 7 that are joined at the corners to form a picture frame.

The invention provides a movable laser cladding and repairing system in the field of laser cladding and repairing. The movable laser cladding and repairing system comprises a movable platform, wherein a laser, a robot, a position changing machine, a powder feeder, an image processing system, a control system (comprises a PLC (programmable logic controller) main control system, a PC (personal computer) computing workstation), a video camera, a three-dimensional laser scanning sensor, a laser processing head and a coaxial powder feeding head are fixedly arranged on the movable platform. The movable laser cladding and repairing system takes the robot as a moving body, controls the clad pool size, the temperature and other information by using an image acquiring and processing system, and scans a workpiece to slice, stratify and automatically clad a three-dimensional workpiece model based on the three-dimensional laser sensor; the movable laser cladding and repairing system is convenient and flexible, simplifies a repairing process, achieves precision and self-adaptive control of a cladding process, effectively improves the cladding quality, and facilitates field application of a large component through the movable platform.

The invention discloses an automatic coating machine which comprises a work platform as well as a product conveying system, a coating system and a protection film conveying and recycling system which are arranged on the work platform, wherein the protection film conveying and recycling system comprises an adhesive tape conveying part and a protection film residue recovering part. When the machine runs, the product conveying system is used for automatically conveying a product and a protection film to a coating station, the coating system is used for cutting the protection film and applying the cut protection film to the surface of the product, production film residues generated during cutting of the production film are automatically recycled after the coating action is finished, and the product is automatically conveyed out, wherein the two-time rolling operation is performed to completely squeeze out air in the protection film to enable the protection film to completely cling to the product before the product is conveyed out. According to the automatic coating machine, the automatic coating operation is finished instead of a manual coating operation, the coating efficiency can be effectively improved, the manpower cost is reduced, the coating operation is simpler and easy, air bubbles in the protection film are squeezed out to enable the protection film to completely cling to the product, and the coating effect is ideal.

The present invention relates to a process for producing a three-dimensional model in which a binder has good discharge properties and curability. The process for producing a three-dimensional model is a process for producing a three-dimensional model that includes a step (layer formation step) of forming above a support a layer of a powder material, the layer having a predetermined thickness, a step (cross-sectional shape formation step) of imagewise bonding the powder material layer by a binder according to sliced cross-sectional data of a modeled object so as to give a cross-sectional shape, and sequentially repeating the above steps, the binder having a viscosity at 25° C. of 5 to 100 mPa·s.

The invention discloses an adjustable coaxial laser nozzle for sending powder, comprising a laser head, a protection lens, a water-cooling sleeve for the protection lens and a column laser cavity arranged on the upper part, a coaxial conical laser cavity which is formed by the inner layer of a laser sleeve and arranged in the middle part, wherein a powder cavity, a secondary external protective cavity and an external water-cooling cavity are arranged on the lower part of the external part of the laser sleeve; the powder cavity is formed between the laser sleeve and a power cavity sleeve screwed together; the secondary external protective cavity is formed between the powder cavity and a protective air casing screwed together; the powder cavity and the protective sir casing are screwed together and adjustable between 1mm to 3mm; 4 to 6 power transmitting pipes and 4 to 6 air tubes are respectively positioned around the top parts of the cones of the powder cavity and the protective air cavity. The adjustable coaxial laser nozzle for sending powder has the advantages that the focus length of the focus lamp fit for the coaxial powder-sending nozzle is between 100mm to 300mm, which ensures convenient assembly and disassembly, even velocity, flexible adjustment of the powder converge diameter, convenient changeable lower coaxial conical parts (the powder cavity, the air casing and the water cavity).

There is provided a method for manufacturing a cylinder for an internal combustion engine by making use of an insert core, which makes it possible to manufacture the cylinder by a die casting method such as a high-pressure die casting method at low cost and in high accuracy. The insert core to be employed herein includes: a cylindrical body having substantially the same outer diameter as the diameter of bore of the cylinder to be obtained; a scavenging port-forming portion projecting radially outward from the cylindrical body and having substantially the same cross-sectional configuration as that of the scavenging port; a suction port-forming portion projecting radially outward from the cylindrical body and having substantially the same cross-sectional configuration as that of at least the cylinder bore-side end portion of a suction port; and an exhaust port-forming portion projecting radially outward from the cylindrical body and having substantially the same cross-sectional configuration as that of at least the cylinder bore-side end portion of an exhaust port.

The invention discloses a rolling and shaping method for a titanium alloy heterotypic ring forging in order to obtain the alloy heterotypic ring forgings with excellent tissues and properties as well as realize accurate rolling. The method includes the following steps: alloy bar material is heated, carried out continuous upsetting and deformed by 65 to 70 percent, so as to be made into a solid cake and then is punched again to lead the alloy bar material to be made into a hollow round cake after the aperture dimension of the alloy bar material is 30 to 35 percent of the dimension of the outer diameter thereof; a rectangle ring blank is obtained after the hollow round cake is heated, rolled circularly and deformed by 25 to 30 percent; a rectangle pre-rolling blank is obtained after the rectangle ring blank is heated, rolled circularly and deformed by 25 to 30 percent again; the pre-rolling blank is heated and arranged in a rolling die of a ring rolling machine and becomes a heterotypic ring forging after being rolled and deformed by 40 to 45 percent in a section groove of the die. When in expansion, the broadening speed of the pre-rolling blank along the radial direction is 2mm/s to 15mm/s with a radial rolling force of 40000kg to 220000kg. The method is mainly used for the shaping of the heterotypic ring forging of an aeroengine or a gas turbine. The method can be adopted to obtain the heterotypic ring forging that is arranged in a flow line along the outline of a part.

The invention relates to the technical field of resin composition preparation and particularly relates to a 3D printing polymer material with special beautifying effects and a preparing method thereof. The polymer material comprises following raw materials by weight: 60-90 parts of matrix resin, 4.0-10 parts of a compatilizer, 0-30 parts of an inorganic filler, 0.3-2.0 parts of white oil, 0.4-0.6 part of an antioxidant, 0.5-1.0 part of a processing auxiliary agent and 1.0-5 parts of a toner. The polymer material is good in dimension stability, good in bridging effect and excellent in draping performance. The appearance of the polymer material is strong in metallic tactile sensation and pearl effects. The polymer material has one or a plurality of effects selected from heat discoloration, photochromic effects, effects of color changing when sensing water, and the like, and is of great significance for promoting material diversification and functionalization of 3D printing. The preparing method is simple, improves shearing and dispersion for the inorganic filler and the toner to the utmost, and improves properties of the polymer material.

A task often encountered in very recent times is the rapid provision of prototypes. Particularly suitable processes are those based on pulverulent materials and in which the desired structures are produced layer-by-layer through selective melting and solidification. The invention provides the constitution, production and use of a copolyamide powder which was produced using the following monomer units: a) laurolactam or ω-aminoundecanoic acid, and also b) dodecanedioic acid, and either c) decanediamine or dodecanediamine, in shaping processes, and also to mouldings produced through a layer-by-layer process which selectively melts regions of a powder layer, using this specific powder. Once the regions previously melted layer-by-layer have been cooled and solidified, the moulding can be removed from the powder bed. The mouldless layer-by-layer processes for the production of components using the copolyamide powder result in simplified and more reliable conduct of the process and better recyclability.