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72results about How to "Avoid complex processing" patented technology

Method for optimization of pipe integrated numerical control machining process

The invention provides a method for optimization of a pipe integrated numerical control machining process. The method comprises the following steps of rough shape cutting, pipe end molding, bend pipe molding, and split charging and discharging. A controller transmits control signals to servo drivers ((40)-(44)). The servo drivers drive motors (M1-M5) on processing devices and the motors drive the corresponding processing devices to work so that high-precision processing is finished. The method can automatically realize integrated numerical control machining or any combined machining such as pipe rough shape cutting and feeding, chipless rough shape cutting, spinning pipe end molding, bend pipe and manipulator automatic-feeding, three-dimensional bend pipe and manipulator automatic-discharging according to drawing information only by manual introduction of a pipe to a material picking opening of a machine tool, can avoid complex processing adopting multiple machine tools and multiple processing steps, can realize continuous automatic production, can improve production benefits and processing quality of pipe production, and can be used for bending molding processing of pipes used in the industries of air conditioners, water heaters, refrigerators or automobiles.
Owner:WUHAN UNIV OF TECH

Gas diffusion layer for proton exchange membrane fuel cells and preparation method thereof

The invention relates to a gas diffusion layer for proton exchange membrane fuel cells; the gas diffusion layer is composed of a carbon nano tube, a carbon fiber and a binder and can be directly used as the gas diffusion layer for the proton exchange membrane fuel cells; the preparation process is as follows: a certain amount of the carbon fiber and the carbon nano tube are weighted according to the proportion and are dispersed uniformly in the solvent; and then a certain amount of the binder is added in the mixture and is mixed uniformly to form slurry; and then the slurry is poured into a filter to carry out vacuumizing filtration, so as to obtain a wet type gas diffusion layer; finally, the prepared wet type gas diffusion layer is placed in a calcining furnace for carrying out heat treatment. The gas diffusion layer in the invention has good electrical conductivity and mass transfer property, can be directly used as the gas diffusion layer for the proton exchange membrane fuel cells, so as to avoid complex treatment process when commodity carbon paper is used; the gas diffusion layer prepared by the method has the advantages of low raw material price, easily-obtaining raw material, simple technology process and controllable thickness / shape, thereby being suitable for mass production.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Cutter abrasion monitoring method based on co-integration modeling

The invention relates to a cutter abrasion monitoring method based on co-integration modeling. The cutter abrasion monitoring method comprises the steps of: extracting a plurality of characteristics of a cutting force signal by means of a cutter cutting experiment; primarily selecting characteristic time sequences with the same trend with a cutter in abrasion loss by using a coorelation coefficient matrix; carrying out an ADF (Augmented Dickey-Fuller) test on each selected characteristic time sequence to judge whether the selected characteristic time sequences are I (1); carrying out co-integration analysis under the condition of guaranteeing that all the selected characteristic time sequences are I (1); solving characteristic values and a co-integration matrix beta; then carrying out Johansen test so as to determine a co-integration order r and related co-integration coefficients; establishing a co-integration relational expression of innovation variables according to the co-integration coefficients; determining an optimal co-integration model by comparing calculated values of the expression; carrying out ADF test on the determined innovation variables; and if the innovation variables are stable, judging that the established co-integration model is correct, and further predicting the abrasion loss of the cutter by using the model. By means of the cutter abrasion monitoring method, the abrasion state of the cutter can be monitored accurately so as to reduce the dimensional deviation of a processed workpiece, caused by the cutter abrasion.
Owner:TIANJIN UNIV

Double-cylinder type magneto-rheological damper with inner and outer coils

The invention discloses a double-cylinder type magneto-rheological damper with inner and outer coils. The double-cylinder type magneto-rheological damper comprises a piston rod, a piston, an inner cylinder barrel, an outer cylinder barrel, an end cover, a dustproof ring, the inner coil, the outer coil, a coil protective layer, a compensation air bag, a bottom locating piece and a nut, wherein the piston rod is tightly connected with the piston; the piston is positioned in the inner cylinder barrel; the inner cylinder barrel is fixed with the bottom locating piece through the end cover; the bottom locating piece is tightly connected with the outer cylinder barrel; a through hole is formed in the middle of the bottom locating piece and used for compensating for an air bag valve port so as to enable the air bag valve port to extend out of the damper; the compensation air bag is mounted at the bottom of the inner cylinder barrel; the end cover is tightly connected with the outer cylinder barrel; the inner coil and the outer coil are wound on the end cover; the dustproof ring is mounted at the top of the inner hole of the end cover; and an end part groove is formed in the part below the end cover. The double-cylinder type magneto-rheological damper with inner and outer coils has the benefits as follows: the structure is simple, the processing and manufacturing are convenient, the cost is low, the damping force of the damper is adjusted, the inner coil has a sealing function, and the sealing performance is good.
Owner:YANCHENG BUGAO AUTO PARTS MFG CO LTD

Slide rail type dielectrophoresis electrode structure for high-throughput continuous flow cell separation

The invention discloses a slide rail type dielectrophoresis electrode structure for high-throughput continuous flow cell separation and belongs to the technical field of micro-fluidic chips. The structure comprises an interdigital electrode array formed by slide rail type electrodes which form an inclination angle alpha with a main runner and cross the main runner, a pair of main electrode which alternately extend to be interdigital and located on two sides of the main runner, parallel sub-runners formed by dividing the main runner by non-uniform side wall structures of the interdigital electrodes, an insulating groove and an inlet/outlet of a sample. The slide rail electrodes with non-uniform side wall structures are placed in the main runner at a certain inclination angle, so that cellsslide along two side walls of a slide layer under the action of dielectrophoresis force and drag force of fluid and enter a migration outlet, and continuous separation of cells is realized. Besides, by changing one-way slide rail type electrodes into two-way V-shaped slide rail type electrodes, the throughput is further improved while continuous cell separation is realized.
Owner:BEIJING UNIV OF CHEM TECH

Dual PCR (Polymerase Chain Reaction) detection method for soybean and peanut components in walnut milk beverage

The invention discloses a method for simultaneously detecting soybean and peanut components doped in walnut milk by using a dual PCR (Polymerase Chain Reaction) technology. According to the method, a specific primer is designed aiming at the soybean and peanut components so as to establish a dual PCR detection method for main doped components, namely the soybean and peanut components, in the walnut milk. The dual PCR detection method comprises the specific primer aiming at the soybean and peanut components and a PCR reaction condition matched with the specific primer; the primer designed by the method has no crossed reactions with other common leguminous plants and non-leguminous plants including peanuts, filberts, walnuts, pine nuts, pistachio nuts, carya illinoensis koch, cashew nuts, almonds, sesames, apples and the like, and has the good specificity; the method disclosed by the invention can be used for simultaneously detecting the soybean and peanut components which are mainly doped in the walnut milk; the result is obtained rapidly, accurate and reliable; the method has an actual application value for detecting that soybean and peanut proteins in the market are used for replacing walnut proteins. Meanwhile, the method has an important reference value for rapid and specific detection when other low-price plant proteins are used for replacing the walnut proteins and relative milk products.
Owner:KUNMING UNIV OF SCI & TECH

Solvent circulation preparation method and application of metal atomic-scale dispersed nitrogen-carbon material

The invention belongs to the field of preparation of novel materials, and particularly relates to a solvent circulation preparation method and application of a metal atomic-scale dispersed nitrogen-carbon material. The preparation method comprises the following steps: A, dissolving metal powder or metal salt in formamide to prepare a solution, conducting reacting at 80-240 DEG C for 2-24 hours, and performing solid-liquid separation to obtain a first solid product and a formamide solution L1; B, carrying out primary solvent circulation operation, namely dissolving metal powder or metal salt in the formamide solution L1, conducting reacting at 80-240 DEG C for 2-24 hours, and carrying out solid-liquid separation to obtain a second solid product and a formamide solution L2; and C, calcining the first solid product and/or the second solid product in an argon atmosphere, and controlling a temperature at 400-1200 DEG C to obtain the metal nitrogen-carbon material. According to the method, the formamide solvent in the reaction is recycled for the first time, the metal nitrogen-carbon material prepared from the recycled solvent has the same structure as the metal nitrogen-carbon material prepared from fresh formamide, and the catalytic performance of the metal nitrogen-carbon material is equal to the catalytic performance of the metal nitrogen-carbon material prepared from fresh formamide.
Owner:BEIJING UNIV OF CHEM TECH

Cutter abrasion monitoring method based on co-integration modeling

The invention relates to a cutter abrasion monitoring method based on co-integration modeling. The cutter abrasion monitoring method comprises the steps of: extracting a plurality of characteristics of a cutting force signal by means of a cutter cutting experiment; primarily selecting characteristic time sequences with the same trend with a cutter in abrasion loss by using a coorelation coefficient matrix; carrying out an ADF (Augmented Dickey-Fuller) test on each selected characteristic time sequence to judge whether the selected characteristic time sequences are I (1); carrying out co-integration analysis under the condition of guaranteeing that all the selected characteristic time sequences are I (1); solving characteristic values and a co-integration matrix beta; then carrying out Johansen test so as to determine a co-integration order r and related co-integration coefficients; establishing a co-integration relational expression of innovation variables according to the co-integration coefficients; determining an optimal co-integration model by comparing calculated values of the expression; carrying out ADF test on the determined innovation variables; and if the innovation variables are stable, judging that the established co-integration model is correct, and further predicting the abrasion loss of the cutter by using the model. By means of the cutter abrasion monitoring method, the abrasion state of the cutter can be monitored accurately so as to reduce the dimensional deviation of a processed workpiece, caused by the cutter abrasion.
Owner:TIANJIN UNIV

Level sight lens and method and tool for assembling same

The invention discloses a level sight lens and a method and tool for assembling the level sight lens. The level sight lens comprises a lens body, an O-shaped sealing ring and a prospective lens. The prospective lens comprises a lens sheet and a lens sheet base, a level sight hole is formed in the lens body, and a mounting cavity used for mounting the O-shaped sealing ring and the prospective lens is arranged on the periphery of the upper portion of the level sight hole; an annular pressing sheet is arranged on the upper edge of the mounting cavity and arranged on the upper surface of the lens body, and the annular pressing sheet can be bent inwards to be attached to the inclined face of the circular cone table portion of the lens sheet base. The method for assembling the level sight lens comprises the step A of placing the sealing ring and the prospective lens in the mounting cavity of the lens body in sequence, and the step B of providing the assembling tool and bending the annular pressing sheet on the lens body inwards to be attached to the inclined face of the circular cone table portion of the lens base. The assembling tool comprises a press block, a cavity is arranged on the bottom portion of the press block, and the inner side wall of the cavity is an inclined face with an inclined center. According to the level sight lens and the method and tool for assembling the level sight lens, the lens sheet base is pressed by the annual pressing sheet, the defects that in the prior art, due to threaded connection, processing is complex, efficiency is low, the bearing capacity is low, and corrosion easily occurs are avoided.
Owner:ZHEJIANG CHUANGLI AUTOMOTIVE AIR CONDITIONER
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