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30results about How to "Effective precision" patented technology
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High-temperature three-dimensional digital image related measurement system and measurement method
The invention discloses a high-temperature three-dimensional digital image related measurement system and a high-temperature three-dimensional digital image related measurement method. The system comprises a digital camera, an imaging lens, band-pass optical filter, a monochromatic light source, a calibration board, a support system and a computer, wherein the support system consists of a triangular bracket, a guide rail and a translation stage; and the computer is used for acquiring a digital image and performing analysis processing. The measurement method comprises five steps. In the system, the band-pass optical filter is arranged in front of the imaging lens of the digital camera, so that the influence of the thermal radiation of a high-temperature object on the brightness enhancement of an acquired image of the camera can be reduced effectively. In the measurement, a measured object is lighted by adopting the monochromatic light source of which the lighting wavelength is positioned in a band-pass range of the band-pass optical filter. By using the system and the method, a brilliant image of the surface of the high-temperature object at the surface temperature of over 500 DEG C is acquired, wherein the image can be directly analyzed and processed by a three-dimensional digital image related method to acquire the three-dimensional morphology of the surface of the high-temperature object and a three-dimensional deformation field under the action of a thermal load. The system has a compact structure, is convenient to operate, and has a wide application range and high measurement precision.
Owner:BEIHANG UNIV
Automatic gain control apparatus and method in an orthogonal frequency division multiple access sytem
InactiveUS20060176093A1Accurately reflectEffective precisionGain controlAmplitude-modulated carrier systemsControl signalCarrier signal
An automatic gain control (AGC) apparatus of a wireless mobile terminal, and method, in an orthogonal frequency division multiple access (OFDMA) system. A gain amplifier controls an amplification gain of received analog symbols. An analog-to-digital converter converts the received analog symbols into a digital signal. A fast Fourier transform (FFT) unit converts the digital signal into a frequency-domain signal. A power measurer measures power in the frequency domain in units of sub-carriers. A sub-carrier power accumulator detects a sub-carrier carrying a signal, and accumulates its power value. A sub-carrier average power measurer estimates an average power value transmitted per sub-carrier from the accumulated power value. A control means compares the estimated average power value with a reference power value, and generates a control signal used for controlling a gain of the gain amplifier according to the comparison result.
Owner:SAMSUNG ELECTRONICS CO LTD
A satellite joint observation task planning method
ActiveCN109409775AGuaranteed solution accuracyFast convergenceResourcesGenetic algorithmsSatellite observationMathematical model
The invention discloses a satellite joint observation task planning method, and relates to a satellite joint observation task planning method. The objective of the invention is to solve the problems of insufficient modeling consideration constraint conditions, low algorithm convergence speed and long algorithm calculation time when a satellite joint observation task planning problem is solved in the prior art. The method comprises the steps of 1, constructing a satellite observation task model; 2, establishing a satellite observation task planning model on the basis of a satellite observationtask model under the conditions that satellite observation tasks and observation resources in a given planning time period are not changed and interstellar links are stable; Step 3, constructing a mathematical model of constraint conditions based on the constraint condition set in the satellite observation task planning model obtained in the step 2; and step 4, designing a genetic algorithm basedon a greedy strategy based on the mathematical model of the constraint condition to complete satellite joint observation task planning. The method is applied to the field of satellite joint observation task planning.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP +1
Combined sensor and bearing assembly and method of magnetizing element of rotation sensor
ActiveUS20050218884A1Accurate detectionSmall sizeBearing assemblyBall bearingsRolling-element bearingEngineering
A combined sensor and bearing assembly (1) of the present invention includes a rolling bearing unit (22) and a rotation sensor unit (23). The rolling bearing unit (22) includes a rotatable raceway member (2), a stationary raceway member (3) mounted around the rotatable raceway member (2) with an annular bearing space defined between it and the rotatable raceway member (2), and a circular row of rolling elements (4). The combined sensor and bearing assembly (1) also includes a to-be-detected member (7) including a magnet secured to the rotatable raceway member (2), and a magnetic detector (8) including a magnetic sensor of an analog output type disposed in face-to-face relation with the to-be-detected member (7). Only a range in which a magnetic characteristic of the to-be-detected member (7) relative to the magnetic detector (8) exhibits linearity is used for detection of rotation angle of the rotatable raceway member (2).
Owner:NTN CORP
Multi-joint industrial mechanical arm
InactiveCN104908031AReduce torqueLower center of gravityProgramme-controlled manipulatorGravity centerEngineering
The invention provides a multi-joint industrial mechanical arm. The multi-joint industrial mechanical arm comprises a base, a first joint and a first driving device are installed at the upper end of the base, two swinging arms and a swinging driving device are installed on the first joint, a second joint and a second driving device are installed on the swinging arms, and the swinging driving device comprises a swinging motor fixed to the upper end of the first joint and located between the two swinging arms. One end of the second joint is connected to the upper ends of the two swinging arms in a rotating mode and located between the two swinging arms, and the second driving device comprises a second motor which is located between the two swinging arms and is close to the swinging motor. Through arranging the two swinging arms, torsion transferred by the joints is distributed to the two swinging arms, meanwhile, the gravity center of the swinging motor and the gravity center of the second motor are low according to the arrangement positions, the torsion borne by the swinging arms is effectively lowered, the structure is simple, the service life is long, and working stability is good.
Owner:MICROPAK CNC TECH QUANZHOU
INS/DR & GNSS loosely integrated navigation method based on MEMS inertial component
PendingCN111156994AReduce selection requirementsEffective precisionNavigation by speed/acceleration measurementsSatellite radio beaconingGyroscopeState vector
The invention discloses an INS / DR & GNSS loosely integrated navigation method based on an MEMS inertial component. The INS / DR & GNSS loosely integrated navigation method comprises the following steps:establishing a state differential equation by taking a position error, a misalignment angle and gyro zero offset of an INS / DR system and a scale factor of a speedometer as state vectors; establishingan observation equation according to the position information of the GNSS system and the position information of the INS / DR system; enabling the state differential equation and the observation equation to enter a Kalman filter iteration process to calculate a state vector of the INS / DR system; correcting the position, the speed, the attitude angle and the gyro zero offset error of the INS / DR system by using the state vector to obtain corrected position, speed and attitude information. According to the invention, the performance of a navigation-level device is achieved by adopting a consumption-level IMU, and the gyroscope thermally-induced zero offset estimation method can be used for autonomous learning and adaptive compensation in the system operation process without any offline calibration; the installation error estimation algorithm provided by the invention can be used for autonomous estimation, and strict requirements on assembly are not needed any more.
Owner:SHANGHAI CYGNUS SEMICON CO LTD
Fine particles of oxide crystal and slurry for polishing which contains the fine particles
InactiveUS20090113809A1Suppress formationEffective precisionMaterial nanotechnologyPigmenting treatmentLiquid mediumX-ray
To provide a slurry for polishing which is excellent in polishing properties, can suppress scratches and is appropriate for accurate polishing in semiconductor production steps, and fine particles of oxide crystal for it.Fine particles of oxide crystal, characterized in that the ratio of the crystallite size measured by X-ray diffraction method and calculated by Scherrer method to the average primary particle size equivalent to sphere from the specific surface area measured by BET is the crystallite size: the average primary particle size=1:0.8 to 1:2.5. A slurry for polishing, characterized in that the fine particles of oxide crystal are dispersed in a liquid medium, and from 0.1 to 40 mass % of the fine particles of oxide crystal are contained, per the total mass of the slurry for polishing.
Owner:ASAHI GLASS CO LTD
Combined sensor and bearing assembly and method of magnetizing element of rotation sensor
ActiveUS7304471B2Accurate detectionSmall sizeBearing assemblyBall bearingsRolling-element bearingEngineering
A combined sensor and bearing assembly (1) of the present invention includes a rolling bearing unit (22) and a rotation sensor unit (23). The rolling bearing unit (22) includes a rotatable raceway member (2), a stationary raceway member (3) mounted around the rotatable raceway member (2) with an annular bearing space defined between it and the rotatable raceway member (2), and a circular row of rolling elements (4). The combined sensor and bearing assembly (1) also includes a to-be-detected member (7) including a magnet secured to the rotatable raceway member (2), and a magnetic detector (8) including a magnetic sensor of an analog output type disposed in face-to-face relation with the to-be-detected member (7). Only a range in which a magnetic characteristic of the to-be-detected member (7) relative to the magnetic detector (8) exhibits linearity is used for detection of rotation angle of the rotatable raceway member (2).
Owner:NTN CORP
Automatic gain control apparatus and method in an orthogonal frequency division multiple access system
InactiveUS7822153B2Accurately reflectEffective precisionGain controlAmplitude-modulated carrier systemsControl signalCarrier signal
An automatic gain control (AGC) apparatus of a wireless mobile terminal, and method, in an orthogonal frequency division multiple access (OFDMA) system. A gain amplifier controls an amplification gain of received analog symbols. An analog-to-digital converter converts the received analog symbols into a digital signal. A fast Fourier transform (FFT) unit converts the digital signal into a frequency-domain signal. A power measurer measures power in the frequency domain in units of sub-carriers. A sub-carrier power accumulator detects a sub-carrier carrying a signal, and accumulates its power value. A sub-carrier average power measurer estimates an average power value transmitted per sub-carrier from the accumulated power value. A control means compares the estimated average power value with a reference power value, and generates a control signal used for controlling a gain of the gain amplifier according to the comparison result.
Owner:SAMSUNG ELECTRONICS CO LTD
Working apparatus
InactiveUS20100062689A1Simple structureImprove performanceEdge grinding machinesCopying process control systemsRotational axisEngineering
A working apparatus, provided with a base stage, work hold and rotation means for holding and rotating a work, working means movable toward and away from the work via slider mechanism and having a working tool, press means for pressing the working tool toward the work via the working means, and trace means pressed toward the work together with the working tool by the press means and in contact with the work and moving the working means as a whole in forward and rearward directions according to outer shape of the work. By pressing of the pressing means, the working tool deburs and chamfers under control of working volume by the trace means. The work hold and rotation means has work rotation axis angle adjustment mechanism, for adjusting angle of rotation axis of the work by holding the work. The working apparatus can precisely debur and chamfer complicated shape of work such as worm gear.
Owner:SENJO SEIKI
Automated Surgical Instruments and Processes
InactiveUS20160287332A1Improve abilitiesLow costLaser surgeryFluid jet surgical cuttersElectrical batteryCataract surgery
An Automated Surgical instrument is disclosed that is computer controlled and provided with a high degree of autonomy for performing automated procedures within humans and other animals. It may be mobile under its own control and may include a plurality of means to disrupt tissue including lasers and water jets. A method of providing barriers to prevent unwanted damage to tissue is also described. The instrument may be used to construct both artificial and biological structures in-vivo by taking advantage of 3D printing techniques made available by the flexible laser system disclosed, a selection of micro tools, and raw material delivery to the worksite for printing to the target area. The use of vibration generated electricity may avoid the need for wires or batteries. A particular embodiment for automated cataract surgery is described.
Owner:GRIFFITS ROBERT KENNETH
Working apparatus
InactiveUS8118522B2Simple structureImprove performanceMilling machinesTurning machinesRotational axisAngle of rotation
A working apparatus, provided with a base stage, work hold and rotation device for holding and rotating a work, working device movable toward and away from the work via slider mechanism and having a working tool, press structure for pressing the working tool toward the work via the working device, and trace device pressed toward the work together with the working tool by the press structure and in contact with the work and moving the working device as a whole in forward and rearward directions according to outer shape of the work. By pressing of the pressing structure, the working tool deburrs and chamfers under control of working volume by the trace device. The work hold and rotation device has work rotation axis angle adjustment mechanism, for adjusting angle of rotation axis of the work by holding the work. The working apparatus can precisely deburr and chamfer complicated shape of work such as worm gear.
Owner:SENJO SEIKI
Compound, polymer compound, resist composition, and patterning process
ActiveUS20170038683A1Improve film propertiesPrevent elutionOrganic chemistryPhotomechanical coating apparatusPolymer scienceHeteroatom
The present invention provides a compound shown by the formula (1),wherein R1 represents a hydrogen atom, a fluorine atom, a methyl group, or a trifluoromethyl group; A represents a single bond or a linear divalent hydrocarbon group having 1 to 30 carbon atoms or a branched or cyclic divalent hydrocarbon group having 3 to 30 carbon atoms, in which the hydrocarbon group may contain a heteroatom, and a part or all of hydrogen atoms in the hydrocarbon group may be substituted with a group containing a heteroatom; “n” represents 0 or 1, provided that “n” is 0 when A is a single bond; and M+ represents a cation. This compound is suitable as a raw material of a polymer compound usable for a base resin of a resist composition that has high resolution and high sensitivity and is excellent in balance of lithography properties such as LWR and CDU.
Owner:SHIN ETSU CHEM IND CO LTD
Mixed pixel decomposition method based on local similar pixels
ActiveCN109871774AReduce interferenceImprove forecast accuracyCharacter and pattern recognitionMixed spectrumSoil properties
The invention relates to a mixed pixel decomposition method based on local similar pixels. remote sensing image data is used as a data source;screening rules are set, pixels with the same spectrum composition is selected to construct a reasonable and effective mixed spectrum matrix; and the soil spectrum and the vegetation spectrum are separated from the mixed spectrum matrix by adopting a non-negative matrix decomposition method to extract the soil spectrum information, and the influence of external factors such as vegetation coverage on the soil spectrum information is weakened, so that theremote sensing prediction precision of the soil attribute information is improved. The method has important significance for improving the existing remote sensing monitoring precision of soil properties, provides a new method and thought for large-area, rapid and accurate drawing and updating of the soil properties, and further promotes the development of the field of obtaining soil information based on the remote sensing technology.
Owner:INST OF SOIL SCI CHINESE ACAD OF SCI
Coating method for liquid crystal alignment film of tft-lcd
ActiveUS20130122621A1Precise alignmentEffective precisionSemiconductor/solid-state device manufacturingNon-linear opticsEngineeringLiquid crystal
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Using laser light for treating melasma and related hyperpigmentation disorders
PendingUS20210077824A1Avoid the needHolistic treatmentSurgical instrument detailsLight therapyHyperpigmentation disorderLaser light
Methods and apparatus for treating melasma and / or related hyperpigmentation disorders of a patient are disclosed. The treatment includes delivering laser pulses onto a body of the patient, wherein the delivering laser pulses includes two or more of the following steps: i) delivering laser pulses p1 onto the body, wherein each pulse of the laser pulses p1 is configured to have a diameter of at least 100 μm and a duration of at most 1 μs; 2) delivering laser pulses p2 onto the body, wherein each pulse of the laser pulses p2 is configured to have a diameter of at least 100 μm and a duration of more than 1 μs; 3) delivering laser pulses p3 onto the body, wherein each pulse of the laser pulses p3 is configured to comprise a plurality of microbeams, each microbeam having a diameter below 1 mm.
Owner:FOTONA D O O
Automatic feeding control system of cutting machine
InactiveCN111889807AImprove convenienceMeasure movement distanceMeasurement/indication equipmentsCleaning using gasesControl systemControl engineering
The invention discloses an automatic feeding control system of a cutting machine. The automatic feeding control system of the cutting machine comprises a man-machine interaction screen, the man-machine interaction screen is in electrical connection with a PLC through a lead, moreover, the PLC is in electrical connection with a material conveying device through the lead, the PLC is in electrical connection with a material clamping device through the lead, and the PLC is in electrical connection with a material cutting device through the lead. The automatic feeding control system of the cuttingmachine is provided with the material cutting device, can effectively detect distance between a material and the cutting machine through an infrared distance sensor, until conveying the material to asuitable position, reminds operators through a loudspeaker, and guarantees accuracy of material cutting of the cutting machine; and a dust collection fan can effectively collect sweeps, can efficiently handle the sweeps and can avoid influence on high efficiency of waste treatment of the cutting machine caused by the sweeps.
Owner:广州心蛙科技有限责任公司
Multilayered optical information-recording media and process for manufacture thereof
InactiveUS20040062186A1Effective precisionEffective in of productivityLayered productsMechanical record carriersProduction rateLight beam
This invention provides an optical disk effective in both precision and productivity, and to a process for the manufacture thereof. The optical disk allows reading of the information recorded on each information-recording surface of the two or more information-recording surfaces by varying the focal position of a playback laser beam incident on and passing through said light transmitting substrate; and the optical disk is provided with a transparent layer that is laminated onto the light transmitting substrate and is constituted of a thermoplastic resin sheet of uniform thickness and the transparent layer has an information-recording surface other than the surface of said light transmitting substrate formed thereon.
Owner:JVC KENWOOD CORP A CORP OF JAPAN
Three-cone visual angle fusion method and system for improving surface defect detection precision and medium
ActiveCN112700483ASolve background distractionsEffective precisionImage enhancementImage analysisFeature matchingGraphics
The invention provides a three-cone view angle fusion method and system for improving surface defect detection precision and a medium. The method comprises the following steps: step 1, shooting a three-cone view angle graph of a sample; 2, preparing a defect-free graph corresponding to the sample, sending the defect-free graph to a feature matching model, and extracting a first feature graph; 3, sending the three-cone view angle image into a feature matching model in a queuing manner, and extracting a second feature image; 4, sending the first feature map and the second feature map into a homography matrix network to obtain a conversion matrix; 5, performing downsampling on the second feature map; 6, sending the down-sampled picture into a conversion matrix to obtain a conversion graph; 7, carrying out channel level fusion on the transformation graph to form a three-channel fusion graph; and 8, sending the three-channel fusion image into a detection model, and learning to obtain depth information. Based on the three-channel fusion, feature matching and other methods, the problems of background interference and concave-convex defects are solved, and the surface defect detection precision can be effectively improved.
Owner:上海微亿智造科技有限公司
Method for automatically adjusting brightness of infrared light source
PendingCN114867167AShorten adjustment timeEffective precisionElectrical apparatusEnergy saving control techniquesInfraredEngineering
The invention discloses a method for automatically adjusting the brightness of an infrared light source, and belongs to the field of infrared sensors. Calculating a difference value SetDelta Value between a set value which the brightness of the infrared light source needs to reach and a feedback value corresponding to the brightness of the current infrared light source, an initial light source brightness adjustment amount Regulated InitialValue and a light source brightness control amount ControlValue in the current processing cycle; when the processor is in the starting state, the ControlValue is equal to Regulation InitialValue; when the brightness of the infrared light source needs to reach a set value to be changed, the ControlValue is equal to the sum of the Last ControlValue and the Regulated InitialValue, and the Regulated InitialValue is equal to the sum of the Last ControlValue and the Regulated InitialValue; wherein the Last Control Value is the brightness control quantity of the light source in the last processing cycle; the brightness control state requirement of the infrared light source after the current processing cycle is determined by the difference value between the brightness output value which the infrared light source finally needs to reach and the current feedback value; when the brightness output value is greater than the current feedback value, the brightness needs to be increased; when the brightness output value is smaller than the current feedback value, the brightness needs to be reduced; when the brightness output value is equal to the current feedback value, the brightness does not need to be changed. The adjustment time of the infrared light source from the current brightness to the set brightness can be shortened.
Owner:CHINA KEY SYST & INTEGRATED CIRCUIT
Calculation method of power flow in distribution network including dg grid connection
ActiveCN109193664BSpeed efficientEffective precisionAc networks with different sources same frequencyNonlinear Schrödinger equationPower flow
Owner:NARI TECH CO LTD +1
Coating method for liquid crystal alignment film of TFT-LCD
ActiveUS8431426B1Precise alignmentEffective controlSemiconductor/solid-state device manufacturingNon-linear opticsEngineeringLiquid crystal
A coating method for liquid crystal alignment film of TFT-LCD including: forming a layer of hydrophobic film on a TFT / CF substrate corresponding to a non-display area, the hydrophobic film separates the TFT / CF substrate into a plurality of rectangular opened areas which are separated from each other, each of the rectangular opened areas corresponds to a display area and its outer frame is formed by the hydrophobic film; and coating of a liquid of a material of an alignment film along a boundary of the rectangular opened area. Accordingly, edge waves caused by spreading of drips of the material of the alignment film can be reduced, so that a precision of printing of the alignment film can be controlled effectively.
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
High-temperature three-dimensional digital image related measurement system and measurement method
Owner:BEIHANG UNIV
Coal washing mechanism with filtering mechanism for separating wastewater
The invention discloses a coal washing mechanism with a filtering mechanism and for separating waste water, and belongs to the technical field of coal washing mechanisms. The coal washing mechanism comprises a machine shell, a combined connecting piece, a dewatering mechanism, a vibration shell and a vibration block, a water collecting shell is fixedly installed on the inner wall of the top face of the machine shell, water spray heads are fixedly installed at the bottom of the water collecting shell, and a dewatering mechanism is rotatably mounted in the center of the bottom of the water collecting shell on the two sides of the water spray heads; According to the coal washing mechanism, the dewatering mechanism is arranged in the coal washer and consists of dewatering blades, a mounting shaft and a shaft sleeve, and the inclined water spray heads are arranged on the two sides of the dewatering mechanism correspondingly due to the inclined surface design of the dewatering blades, so that the inclined water spray heads spray water during coal washing, and different pressures can be generated on the inclined surfaces of the dewatering blades; and due to the fact that stress on the dewatering blades is uneven, the dewatering blades can rotate around the mounting shaft, water on the dewatering blades can be dispersed, the spraying range and the spraying width of coal washing liquidare greatly increased during coal washing, and the coal washing effect is effectively improved.
Owner:温州法孜生态农业科技发展有限公司
Photovoltaic fault detection characteristic quantity extraction method
PendingCN113515851ASolve the situation of low calculation accuracyEffective precisionPhotovoltaic monitoringDesign optimisation/simulationPhotovoltaic arraysTrust region
The invention relates to the technical field of photovoltaic fault detection, discloses a photovoltaic fault detection characteristic quantity extraction method, and provides an MPPT (maximum power point tracking) maximum power point and equivalent resistance Rs, open-circuit voltage Voc, maximum power point current Im and maximum power point voltage Vm which are extracted on the basis of a trust region affine algorithm in combination with an optimization observation perturbation algorithm and an optimization conductance increment algorithm. According to the method, the defects of the perturbation algorithm are overcome through an incremental conductance method, and results obtained through two kinds of detection are comprehensively considered to determine the maximum power point, so that the accuracy of the algorithm is improved. The method comprises the following steps: extracting characteristic parameters of an I-V curve by using a trust region affine algorithm, calculating each characteristic quantity, comprehensively judging a photovoltaic array fault, and combining the characteristic quantity with MPPT (Maximum Power Point Tracking) to detect whether data is wrong or not so as to achieve high-precision detection.
Owner:HUAIYIN INSTITUTE OF TECHNOLOGY
Trunk two-way image semantic segmentation method for scene understanding of mobile robot in complex environment
PendingCN113947102AGuaranteed accuracyProcessing speedCharacter and pattern recognitionNeural architecturesImaging processingFeature extraction
The invention belongs to the field of image processing, and discloses a trunk two-way image semantic segmentation method, which specifically comprises the following steps: inputting an image into a semantic segmentation model for feature extraction to obtain an initial feature map; after the initial feature map is processed by a residual network, performing primary semantic fusion on the initial feature map and the initial feature map subjected to down-sampling and residual network processing to obtain a primary fusion high-resolution feature map and a primary fusion low-resolution feature map; performing residual network processing on the primary fusion high-resolution feature map, and performing secondary semantic fusion on the primary fusion high-resolution feature map and a primary fusion low-resolution feature map subjected to down-sampling and residual network processing; and obtaining a third-level fusion high-resolution feature map and a third-level fusion low-resolution feature map; processing the three-level fused high-resolution feature map through a residual network; carrying out third semantic fusion on the three-level fused high-resolution feature map and the three-level fusion low-resolution feature map subjected to down-sampling and residual network processing; and obtaining a five-level fusion feature map; and carrying out up-sampling on the five-level fusion feature map through a decoder to obtain an image semantic segmentation result.
Owner:SHANGHAI UNIV
A Method for Satellite Joint Observation Mission Planning
ActiveCN109409775BGuaranteed solution accuracyFast convergenceResourcesGenetic algorithmsSatellite observationMathematical model
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP +1
Method and device for determining pit slot engineering quantity, computer equipment and storage medium
PendingCN113919025AEffective precisionGeometric CADImage analysisConstruction engineeringMechanical engineering
The invention relates to a pit slot engineering quantity determination method and device, computer equipment and a storage medium. The method comprises the following steps: constructing an initial three-dimensional model of a target pit slot project according to the excavation size of the target pit slot project; arranging a stabilizing component of the target pit slot project in the initial three-dimensional model, and determining the actual excavation volume of the target pit slot project according to the placement position of the stabilizing component; arranging an embedded component of the target pit slot project in the initial three-dimensional model, and determining the backfill volume of the target pit slot project according to the contour volume of the embedded component and the actual excavation volume; and determining the engineering quantity of the target pit slot engineering according to the actual excavation volume and the backfill volume. By adopting the method, the accuracy of calculating the engineering quantity of the pit slot engineering can be improved.
Owner:GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
Complex formed multi-tooth tool and machining method and application method thereof
The invention relates to the technical field of special turning, in particular to a complex formed multi-tooth tool. The complex formed multi-tooth tool comprises at least two rough cutting teeth andat least one finish cutting tooth successively arranged in a feeding direction. The rough cutting teeth and the finish cutting teeth form a comb-like structure together. Each rough cutting tooth comprises a first cut-in surface of the rough cutting tooth, a top line of the rough cutting tooth and a later cut-in surface of the rough cutting tooth. Each finish cutting tooth comprises a first cut-insurface of the finish cutting tooth, a top line of the finish cutting tooth and a later cut-in surface of the finish cutting tooth. The later cut-in surface of the rough cutting tooth and the later cut-in surface of the finish cutting tooth are homodromous. The included angles between the first cut-in surfaces of all the rough cutting teeth and a vertical direction are larger than those between the first cut-in surfaces of all the finish cutting teeth and the vertical direction. The invention further relates to a machining method and an application method of the complex formed multi-tooth tool. According to the invention, a vibrating problem in a tool using process can be reduced effectively, so that the tool is stressed in a balanced manner, and therefore, the service life of the tool isprolonged and the machining precision is improved.
Owner:CHENGDU TOOL RES INST
Separation elevator for camellia oleifera fruit production
The invention belongs to the field of camellia oleifera fruit separation, and particularly relates to a separation elevator for camellia oleifera fruit production. The separation elevator comprises a feeding lifting device, wherein one end of the feeding lifting device is provided with a discharge port, a plurality of conveying belt devices A are arranged below the discharge port from top to bottom, the conveyor belt devices A are obliquely arranged and are distributed in a step shape, the feeding lifting device is used for outputting raw materials to the uppermost conveying belt device A from the discharge port, the conveying direction of the conveying belt device A is from bottom to top, and the conveying belt device A is used for conveying shells in the raw materials upwards and outputting the shells and enabling fruit seeds to roll to the other adjacent conveying belt device A below the conveying belt device A so as to achieve a multi-stage separation function, the bottoms of the conveying belt devices A are rotatably connected with a bracket, and the conveying belt devices A are each provided with an adjusting mechanism for adjusting the inclination angle of the conveying belt device A. According to the invention, the separation elevator has the beneficial effect that seeds and shells can be effectively and finely separated.
Owner:SICHUAN JIENENG DRYING EQUIP CO LTD
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