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91results about How to "good consistency" patented technology

Miniature compression molding inductance element and manufacturing method thereof

ActiveCN104616878Agood consistencynot easily damaged
The invention discloses a miniature compression molding inductance element and a manufacturing method thereof. The manufacturing method of the miniature compression molding inductance element comprises the steps that a magnetic core and a coil are prefabricated; the prefabricated magnetic core and coil are combined into a combined body; powder and the combined body are compressed and molded to form a compression body, and a wire slot is formed in one side of the compression body; a metal electrode is formed on the wire slot; pin arrangement is carried out, in other words, the leading-out pin of the coil is arranged in the wire slot; an end electrode is formed, in other words, the leading-out pin of the coil and the metal electrode are welded together to form the end electrode of the miniature compression molding inductance element. By means of the manufacturing method of the miniature compression molding inductance element, the manufactured inductance element has the better consistency and is not likely to be damaged in the machining process, and the product reliability is higher. In addition, by means of the coil prefabrication technology, product machining is more flexible, the problem that a magnetic core is cracked in the prior art is avoided, and therefore the manufacturing method is more applicable to achieving volume production of thin and miniature power inductance elements.
Owner:东莞华络电子有限公司

In-parallel sampling over-current protection circuit

ActiveCN102801294Agood consistencyChannel current reduction
The invention discloses an in-parallel sampling over-current protection circuit. The in-parallel sampling over-current protection circuit comprises a temperature-drift suppression circuit, an in-parallel sampling circuit, an output power component, a reference input end, a first output end and a second output end, wherein the temperature-drift suppression circuit consists of a first resistor, a first thermistor, a second resistor, a second thermistor and an operation amplifier; the in-parallel sampling circuit consists of a first switching tube, another second thermistor and a second resistor; the output power component is formed by N second switching tubes in a parallel connection manner; output current flows through the first output end and the second output end; when the output current is overlarge, voltage of a second input end of the operation amplifier is higher than voltage of a first input end, the signal level of the output end of the operation amplifier is changed, the first switching tube and the second switching tubes are disconnected to realize over-current protection; and the temperature-drift suppression circuit carries out compensation by the first thermistor and the second thermistor, and by voltage distribution between the first resistor and the first thermistor and voltage distribution between the second resistor and the second thermistor, a proportional relation is formed, and flexible adjustment of over-current protection points is realized.
Owner:BEIJING KEYTONE ELECTRONICS RELAY

Method for generating glass polishing machining path of five-axis numerical control machine

The invention relates to the technical field of computer aided design and manufacturing, in particular to a method for generating a glass polishing machining path of a five-axis numerical control machine. The method comprises the following steps of: A, constructing a geometric curved surface representing the shape of a product; B, designing a polishing shape curve on a plane and defining the section shape of a polishing grinding wheel; C, defining a cone tool according to the section shape of the polishing grinding wheel; D, generating a five-axis path of machining of a tool nose of the cone tool; E, simulating and previewing a machining effect and regulating the five-axis machining path to ensure the five-axis machining path to meet the design requirements of the product; F, mapping the machining path of the cone tool on the plane to the curved surface constructed in the step A; and G, converting the machining path of the tool nose of the cone tool into a polishing machining path of the grinding wheel. According to the invention, glass polishing is carried out by using the five-axis numerical control machine, patterns of the product have good consistency, and complex patterns canbe machined. Meanwhile, the production efficiency is improved, the production cost is reduced and the development period of a novel pattern is shortened.
Owner:北京精雕科技集团有限公司

Accurate and simple transformer oil acid value detection method

The invention relates to an accurate and simple transformer oil acid value detection method. The method comprises the steps of: (1) oil sample detection, (2) blank solvent detection, and (3) calculation. In the step (1), 3.0-4.0g of transformer oil requiring detection is accurately weighed; an extractant isopropyl alcohol is added to the sample; the mixture is well mixed by shaking; an alkali blue 6B indicating agent is dropped into the mixture, such that a mixed solution is obtained; 0.05mol/L of a KOH ethanol solution is used for titration, until the color of the solution turns to light red. In the step (2), the extractant with a volume same as that used in the step (1) is weighed; the alkali blue 6B indicating agent is dropped into the extractant, such that a mixed solution is obtained; 0.05mol/L of a KOH ethanol solution is used for titration, until the color of the solution turns to light red, such that the titration reaches an end. In the step (3), the calculation is carried out according to the formula of: c(mgKOH/g)=(V-V0)*c(KOH)*M(KOH)/m. The method provided by the invention is simple and fast. With the method, heating and refluxing are not needed, such that working efficiency is improved. Twice titration is changed into once titration, such that the operation processes are simplified, and operation errors of the system are reduced.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID

Special large cutter grinder for bearing cutter

The invention relates to a special large cutter grinder for a bearing cutter. The special large cutter grinder is characterized in that a machine tool is provided with a cutter frame installation base moving mechanism and a grinding mechanism, the cutter frame installation base moving mechanism is matched with the grinding mechanism, the cutter frame installation base moving mechanism comprises a transverse moving mechanism and a longitudinal moving mechanism, the longitudinal moving mechanism mainly comprises a large adjustment wheel, a transmission screw rod and a longitudinal moving plate, the transverse moving mechanism mainly comprises a transverse motor, a transverse feeding shaft and a transverse work table, the grinding mechanism mainly comprises a motor, a sand wheel, a motor installation plate, a linear guide rail and a stand column, the transverse work table is provided with a cutter frame installation base, a cutter frame is fixed to the cutter frame installation base, and the cutter frame installation base is fixedly connected with the transverse work table through a supporting base. Compared with a manual cutter grinding machine of the same kind, the special large cutter grinder is high in machining efficiency, the consistency of ground cutter heads is good, the grinder is convenient to adjust and high in precision and smoothness of machined products is high.
Owner:XINCHANG HENGLI BEARING

Transfer print device used for machining rubber tube opening circumference identification

The invention discloses a transfer print device used for machining rubber tube opening circumference identification. The transfer print device is characterized in that a rotating support is arranged in the middle of one side of a base, the middle of the bottom of a lever is supported by the rotating support, a rubber tube positioning shaft is arranged at one end of the lever, the other end of the lever and one side of the upper portion of a device outer cover on the other side of the base are connected together through a cylinder, a driving wheel, a transfer print wheel and an ink wheel are arranged in the device outer cover, synchronous wheels are arranged on the other side of the driving wheel, the other side of the transfer print wheel and the other side of the ink wheel respectively, the synchronous wheels on the driving wheel, the transfer print wheel and the ink wheel are connected together through a synchronous belt, and an ink box is arranged below the ink wheel. By means of the arrangement, the rubber tube opening circumference identification machining process is automatically completed, the labor intensity of workers is lowered, the project quality is improved, the production efficiency is improved, the semiautomatic operation is achieved, and the transfer print device is safe, reliable, stable in action and long in service life.
Owner:SHANDONG MEICHEN ECOLOGY & ENVIRONMENT CO LTD

Semiconductor sequencing chip and gene sequencer

InactiveCN105462808Agood consistencyReduce Interfering Signals
The invention relates to the field of gene sequencing devices, and provides a semiconductor sequencing chip and a gene sequencer. The semiconductor sequencing chip sequentially comprises a substrate, a flowing chamber and a chip cover from bottom to top. The substrate comprises a sensor array and a micropore array located above the sensor array. The sensor array is provided with a plurality of sensors, and the sensors correspond to micropores in the micropore array in a one-to-one mode. The chip cover is provided with a reagent inlet and a first reagent outlet, and the reagent inlet and the first reagent outlet are formed in the two ends of the flowing chamber respectively. The distance between the middle of the inner surface of the chip cover and the substrate is small, and the distances between the two sides of the inner surface of the chip cover and the substrate are large. The semiconductor sequencing chip further comprises a reference electrode, and the reference electrode is communicated with liquid in the flowing chamber and provides reference voltage for the sensors. According to the semiconductor sequencing chip and the gene sequencer, due to the special design of the inner surface of the chip cover, the coincidence of the flowing speeds of a reagent in all the portions of the flowing chamber is better, interference signals in obtained sequencing data are reduced, and sequencing accuracy is improved.
Owner:SHENZHEN JIYINJIAN BIOLOGICAL TECH CO LTD

Method for producing one-piece compressed hard glass fish collecting lamp bulb shell

InactiveCN102249517Agood consistencyBlister shape fixed
The invention discloses a method for producing one-piece compressed hard glass fish collecting lamp bulb shell. The method comprises the following steps of: (1) selecting the specific size of a standard bulb shell to design the scheme of forming dies in advance, wherein in die materials, graphite or high-strength heat-resisting alloy can be used as blanks; (2) designing the bulb shell dies; (3) designing the two dies which have the same size, and forming feed holes with the diameters of between 30 and 50 millimeters uniformly at the upper ends of the two dies, wherein the two dies can be opened or closed under the mechanical control; (4) blanking hard glass melts continuously from a blanking opening and melting in a hard glass electric kiln at the high temperature of 1,200 DEG C, and conveying the hard glass melts into the dies directly from the feed holes of the dies; (5) after the hard glass melts are conveyed into the dies from the feed holes of the dies, introducing compressed air from the feed holes of the dies, and blowing; and (6) opening the dies, and cooling slowly to form the fish collecting lamp bulb shell. The method has the advantages that: the lamp bulb shell is fixed in a shape, uniform in outer diameter and wall thickness, standard in length and high stability and consistency; a large number of glass materials are saved; and the cost is reduced.
Owner:周玉春
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