38results about How to "High copying accuracy" patented technology

The invention relates to a reel-to-reel hot roller coining forming method for a micro-nano structure on the surface of polymer. The reel-to-reel hot roller coining forming method comprises the steps that a polymer material is conveyed to a preheat roller from an unreeling device, preheated to the attaching temperature and attached to a base band in a hot pressing mode; the polymer material attached to the base band is conveyed to the position between a mold roller and a pressure roller and heated to the coining temperature through the mold roller heated in advance, and then a mold cavity is filled with the polymer material through the action of the pressure roller; mold filling and supersonic vibration assembly starting are conducted at the same time, and the reel-to-reel hot roller coining process is completed with assistance of supersonic vibration; the polymer material is conveyed out from the position between the mold roller and the pressure roller, and then cooled and separated from the position inside the mold roller; and after demolding is completed, a polymer product is continuously cooled, separation of the polymer product and the base band is achieved, and finally reeling is conducted. According to the reel-to-reel hot roller coining forming method for the micro-nano structure on the surface of the polymer, the reel-to-reel hot roller coining process is improved through supersonic vibration, the mold filling process is accelerated, the duplication precision is improved, and the demolding force and demolding deformation are reduced; and the reel-to-reel hot roller coining forming method is advanced.

The invention provides an oral porcelain tooth 3D gel printing preparation method, and belongs to the technical field of quick forming of precise porcelain composite materials. The oral porcelain tooth 3D gel printing preparation method comprises the following steps: firstly, acquiring an actual three-dimensional virtual model of oral teeth of a patient by using a medical digital scanning technology, processing with medical model analyzing and processing software, and then generating a formatted file required by 3D printing; secondly, preparing required non-toxic biomedical porcelain slurry, controlling a 3D printer to extrude the slurry along a sprayer with a specific size through computer 3D printing software, and then stacking layer by layer to form a three-dimensional blank body of the oral porcelain teeth; and finally, after drying the blank body, sintering the blank body at high temperature to obtain the final product. By the method, the oral porcelain teeth can be produced quickly and highly precisely, the material utilization rate is high, the printed porcelain teeth are safe and non-toxic and are good in biological compatibility, and in the aspect of the mechanical property, teeth can be matched well. In addition, by the method, production cost is reduced, a technical process of product is simplified, operability is high, and private customization is easy to implement.

The invention discloses a method for processing the surface of a multi-scale bionic structure. The method combines a surface replica method and an electro-deposition method and sequentially comprises the following steps of: (1) replicating a biological prototype surface structure by using active carbon (AC) paper by using a soft sealing technique, and then evaporating a gold film on the AC paper to increase the electric conductivity; and (2) depositing a metal coating on the conductive treated AC paper by adopting the electro-deposition method in metal electrolyte, and finally, micro-processing the bionic structure with biological surface and high precision on the metal surface, wherein the shape and the size of the bionic structure are consistent with those of a micro/nano structure on the biological prototype surface.

The invention relates to a high-precision copying method of a carbon fiber composite space optical mirror plane, particularly relates to an optical mirror plane product which is a spherical-crown or spherical-crown-like curved surface structure and is made of a carbon fiber enhanced cyanic acid composite, and belongs to the technical field of advanced composites. The optical mirror plane is a large-aperture spherical-crown concave surface structure. The mirror plane copying technology comprises the following steps: carrying out technological simulation analysis and experimental confirmation according to surface precision and performance requirements, and determining a suitable cyanate/carbon fiber prepreg system and a prepreg laying sequence; laying prepreg wires of a large-size optical mirror plane with a curved surface structure by using an automatic wire laying technology, accurately controlling a laying angle of the prepreg wires, and guaranteeing high-quality copying at a full laid angle; and curing the laid prepreg by using an autoclave to obtain the copied high-precision optical mirror plane. The copied mirror plane is high in surface precision and high in repeatability and consistency; and compared with manufacturing of the traditional optical mirror plane, the copying technology is short in manufacturing cycle and low in manufacturing cost.

The invention relates to a method for preparing a micron/nanometer optical element on GaAs and a micron/nanometer optical element thereof, in particular to a preparation method in which the micron/nanometer optical array element is directly etched on the surface of semiconductor GaAs material at one time with low cost, simple method and no complex processes such as mask lithography and so on. The quartz with the micron/nanometer optical array element is taken as an original mother blank; a relief structure on the quartz micron/nanometer optical array element is accurately replicated on the surface of polymer material and then a Ti layer and a Pt layer are sputtered in sequence; the surface is then metallized to obtain a template electrode. The template electrode is used as a working electrode and is adjusted to be parallel to a processed workpiece GaAs; an electrochemical etching solution is added into an electrolytic cell and an etching agent is generated on the template electrode; a restraint agent in the etching solution is used for compressing the thickness of an etching agent layer to the thickness of a micron or a nanometer level; GaAs sheets are controlled to move to the surface of the template electrode until the structure on the template electrode is completely replicated on the surface of the processed workpiece and the separation of the GaAs sheets and the template electrode is controlled.

The invention relates to a method for manufacturing larger-area anti-adsorption surface with an emulational shark skin appearance, comprising two steps: (1) manufacturing a rolling female template device; and (2) manufacturing the anti-adsorption surface by adopting the ultraviolet-light curing technology. The ultraviolet-light curing technology is used for curing material rapidly to form the surface in a needed structure by using the sensitivity of the material to ultraviolet light. The micro embossing moulding method is used for rapidly carrying out micro-replication and nano-replication to structural patterns under the micro-nano scale with low cost. The method uses the ultraviolet-light curing technology and the micro embossing moulding technology to manufacture the larger-area anti-adsorption surface with the emulational shark skin appearance. The method has good practical value and wide application prospect in the technical field of biomimetic manufacturing.

The invention relates to a production process for a reel type hologram pattern paper and a hologram pattern paper and a system thereof. The process comprises the following steps: 1.1 carrying out vapor plating on an information transfer layer on the surface of a mother membrane having a hologram pattern so as to obtain a transfer membrane; 1.2 applying an adhesive layer on the information transfer layer and then combining the adhesive layer with a paper base, wherein the adhesive layer is UV resin; 1.3 peeling the mother membrane so as to obtain a hologram pattern paper. The process is characterized in that: groove structure of hologram pattern on the surface of the mother membrane is duplicated and transferred onto the transfer layer. According to the invention, the fact that the hologram pattern groove structure on the mother membrane surface can be precisely duplicated is used creatively to improve the prior art, and duplication of the hologram pattern groove structure on the mother membrane surface and a coating process are used for the production of a reel type hologram pattern paper, thereby substantially reducing production cost and increasing production efficiency.

The invention discloses a solute transport process optical measuring device based on a rock joint transparent copy. The device is characterized by comprising a transparent joint overcurrent device, an optical monitoring system, a water flow controlling and measuring system and a data acquiring and analyzing system. A to-be-tested and detected transparent rock joint copy is placed on the transparent joint overcurrent device, and the transparent joint overcurrent device provides a stable water flow which is precise in flow through the water flow controlling and measuring system; and the data acquiring and analyzing system is connected to the optical monitoring system and the water flow controlling and measuring system, and the data acquiring and analyzing system is used for acquiring the flow rate data of the water flow controlling and measuring system and transparent rock joint copy photographing data by the optical monitoring system. The measuring device can realize solute transport processes of the joints with different spatial morphological characteristics at different flow rates. The testing process is simple to operate, the device is low in cost, the repeatability is strong, a result can be intuitively displayed, and the reliability is strong.

The invention provides a voltage comparator. The voltage comparator comprises a current mirror circuit, a third resistor, a fourth resistor, a first bipolar transistor, a second bipolar transistor, asecond current source and a third MOS (Metal Oxide Semiconductor) transistor. The current mirror circuit has very small current mirror current duplication mismatch, and very high current duplication precision, so that the precision of an internal reference voltage threshold of the voltage comparator can be increased.

The invention provides an artificial bionic compound eye preparation method based on atmospheric pressure cold plasma micromachining. The artificial bionic compound eye preparation method comprises the following steps of spin-coating a layer of photoresist on a substrate, etching the photoresist by adopting atmospheric pressure cold plasma jet, and obtaining a planar concave array structure on thephotoresist after etching, preparing a demolding isolation layer on the upper surface of the planar concave array structure obtained after etching, spin-coating a layer of optical transparent material on the isolation layer, and curing the optical transparent material to form a transparent film, and stripping the cured transparent film to obtain the compound eye lens with the planar convex arraystructure. According to the method, a mask plate is not needed, and the artificial bionic compound eye structure can be obtained through hot-pressing deformation after one-time mold reversing; compared with a traditional micro-lens machining process, the method has the advantages of simple process, low cost, high copying precision and the like.

The invention relates to reel type holographic pattern paper, a manufacturing process and system of the reel holographic pattern paper and a transfer film used in the process. The process comprises the following steps: 1.1 depositing an information transfer layer on the surface of a mother film to form the transfer film; 1.2 coating an adhesive layer on the information transfer layer and then compounding the information transfer layer with a paper base; and 1.3 stripping the mother film, thus obtaining the holographic pattern paper. The process is characterized in that the mother film is in reel type; the surface of the mother film is provided with a groove structure of the holographic pattern; and the groove structure is duplicated to the information transfer layer. The invention also discloses the transfer film used in the process, the holographic pattern paper and the manufacturing system. The holographic pattern paper, the process, the system and the transfer film have the following beneficial effects: the coating procedure is utilized to manufacture the reel type holographic pattern paper, thus greatly lowering the production cost and improving the production efficiency by atleast above 3 times.

The invention discloses an RC oscillator with stable frequency, which is an RC oscillator with low temperature drift and high power supply rejection ratio, has the characteristics of simple structure, small influence by temperature and power supply voltage and stable frequency, and comprises a reference generation circuit used for generating fixed bias current and bias voltage, and the bias voltage is generated by the bias current flowing through a bias resistor; an oscillation generating circuit is used for generating a periodic signal of which the frequency is only related to the resistance and the capacitance by utilizing the reference of the reference generating circuit; a feedback adjustment circuit is used for adjusting the comparison reference voltage of the comparator according to the time delay change of the comparator in the oscillation generation circuit and eliminating the influence of the time delay of the comparator; a logic circuit is used for receiving a signal of the oscillation generation circuit and controlling switching of a switch in the oscillation generation circuit to generate a periodic clock signal; a reference generation circuit is connected with the oscillation generation circuit, the oscillation generation circuit is connected with the logic circuit, and the feedback adjustment circuit is connected with the oscillation generation circuit.

The invention relates to a roll-type hologram paper manufacturing process, a transfer film, hologram paper and a system. The roll-type hologram paper manufacturing process provided by the invention comprises the following steps of: 1.1, coating an adhesive layer on the surface of a master film which comprises a hologram and then compounding the master film with a paper base, wherein the adhesive layer is a UV (ultraviolet) resin; 1.2, stripping the master film to obtain the hologram paper; and the roll-type hologram paper manufacturing process is characterized in that: a groove structure of the hologram on the surface the master film is copied on the adhesive layer. In the invention, the characteristic that the hologram groove structure on the surface the master film can be accurately copied is creatively utilized, the prior art is changed into copying of the hologram groove structure on the surface the master film, and a coating process is utilized for manufacturing the roll-type hologram paper, thus the production cost is greatly lowered and the production efficiency is increased.