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70results about How to "Optimize processing parameters" patented technology
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Digital audio signal filtering mechanism and method
InactiveUS20050065780A1Good resultWell combinedTelevision system detailsSpeech analysisDigital audio signalsTransmission bandwidth
Essentially all of the processing parameters which control processing of a source audio signal to produce an encoded audio signal are stored in an audio processing profile. Multiple audio processing profiles are stored in a processing profile database such that specific combinations of processing parameters can be retrieved and used at a later time. Audio processing profiles are organized according to specific delivery bandwidths such that a sound engineer can quickly and efficiently encode audio signals for each of a number of distinct delivery media. Synchronized A / B switching during playback of various encoded audio signals allows the sound engineer to detect nuances in the sound characteristics of the various encoded audio signals.
Owner:MICROSOFT TECH LICENSING LLC
Method for producing titanium alloy artware by adopting selective laser melting
ActiveCN104259459AHigh precisionImprove forming qualityIncreasing energy efficiencySelective laser meltingSelective laser sintering
The invention relates to the field of material preparation, in particular to a method for producing titanium alloy artware by adopting selective laser melting. The method includes the steps: creating two-dimensional slicing data of a part structure to be produced and importing the two-dimensional slicing data into a metal powder laser melting system; setting processing technological parameters of the metal powder laser melting system; taking titanium alloy powder and spreading the titanium alloy powder on the metal powder laser melting system, and sequentially performing laser melting, powder sieving, heat treatment, wire cutting, cleaning, sand blasting, polishing and the like under the protection of inert gas to obtain the titanium alloy artware. According to the method, specific titanium alloy types and specification parameters are selected, and the processing technological parameters of the metal powder laser melting system are optimized for multiple times, so that the produced titanium alloy artware is high in precision, stable in shaping quality, small in distortion, excellent in mechanical property and good in surface smoothness through follow-up processing and has great artistic value.
Owner:飞而康快速制造科技有限责任公司
Digital audio signal filtering mechanism and method
InactiveUS6959220B1Promote resultsFast processingTelevision system detailsCode conversionDigital audio signalsAudio frequency
Essentially all of the processing parameters which control processing of a source audio signal to produce an encoded audio signal are stored in an audio processing profile. Multiple audio processing profiles are stored in a processing profile database such that specific combinations of processing parameters can be retrieved and used at a later time. Audio processing profiles are organized according to specific delivery bandwidths such that a sound engineer can quickly and efficiently encode audio signals for each of a number of distinct delivery media. Synchronized A / B switching during playback of various encoded audio signals allows the sound engineer to detect nuances in the sound characteristics of the various encoded audio signals.
Owner:MICROSOFT TECH LICENSING LLC
Control method for manufacturing process of key parts of marine diesel engine based on digital twin
ActiveCN109270899AMonitor Disturbance FactorsDisturbing factors are eliminated in timeTotal factory controlProgramme total factory controlInformation spaceFull cycle
The invention discloses a control method for the manufacturing process of key parts of a marine diesel engine based on digital twin. The method comprises the following steps: (1) creating a manufacturing service platform for the key parts; (2) performing real-time data acquisition; (3) establishing a digital twin model system; (4) performing quality prediction; and (5) performing synchronous execution and control of the manufacturing process. Through quality control for key part manufacturing of the marine diesel engine, the quality data of workpiece processing and manufacturing based on a digital twin technology can be monitored dynamically and visually in real time. Process parameters are optimized by real-time simulation of a digital twin model, and an actual processing process is controlled with optimized parameters. Meanwhile, real mapping of an information space and a physical space is utilized effectively, and real-time and full-cycle management and control of the quality of thekey parts and the stability of processing resources and equipment in the manufacturing process are realized. The method is of great significance to improve the quality of the key parts and the utilization rate of resources, as well as to improve the production efficiency.
Owner:JIANGSU UNIV OF SCI & TECH
Processing technique of 9Cr18 stainless steel capable of being improved to G3 level
InactiveCN101186005AOptimize processing parametersSpherical surface grinding machinesMetal working apparatusCold treatmentProcess quality
The invention relates to a 9Cr18 stainless steel ball processing technique which can be raised to G3 grade. The processing technique sequentially includes raw material inspection, ball-forging, stress-relief and anneal, hot-acid pickling, polishing, quenching plus cold treatment plus backfire, hard milling, a first-time stabilizing treatment, fine milling, a second-time stabilizing treatment, fine grinding, washing, fine appearance-forming and lubricating and packing. On a basis of making a full use of the existing steel ball processing technology, machine-tool equipments and testing equipments, the technique of the invention adopts a reinforced steel ball manufacturing equipment, industrial preparations, and a novel abrasive to optimize various machining process parameters in the steel ball processing technique and to strengthen a process quality testing and has a proper washing, packing and conserving proposals, etc. process technology. The invention can raise the precision grade of the stainless steel ball to G3 grade and solves the processing technology, testing control and finished-product washing of the 9Cr18 stainless steel ball, and then a batch manufacture is realized finally.
Owner:LUOYANG BEARING SCI & TECH CO LTD
Milling cutter eccentricity rapidly measured non-contact type laser measuring method
ActiveCN103753353AReasonable installationOptimize processing parametersMeasurement/indication equipmentsMilling cutterMathematical model
The invention provides a milling cutter eccentricity rapidly measured non-contact type laser measuring method. The milling cutter eccentricity rapidly measured non-contact type laser measuring method can rapidly obtain the actual cutter eccentricity after a milling cutter is installed, accordingly whether the installation is reasonable or not is judged and efficient machining parameter is confirmed and part accurately and efficiently machining is achieved. The milling cutter eccentricity rapidly measured non-contact type laser measuring method is characterized in that dynamic displacement of the milling cutter during rotation at different rotating speed is collected through a laser displacement sensor; the peak-peak value of the dynamic displacement under different rotating speed through filtering waves are obtained; a mathematical model for solving the milling cutter eccentricity is constructed according to the peak-peak value; the actual milling cutter eccentricity is obtained due to solving of an optimizing model of the milling cutter eccentricity.
Owner:WUXI TURBINE BLADE
Method for predicting milling stability based on Gear formula
InactiveCN106647625AImprove surface qualityEfficient processingProgramme controlComputer controlNumerical controlManufacturing technology
A method for predicting milling stability based on Gear formula is used mainly for selecting reasonable cutting parameters for processing parts and is characterized in that forced periodic vibration is discretized into equally spaced small regions by using Gear formula so as to obtain a transfer matrix of a milling system, a characteristic value of the transfer matrix of the milling system is judged through Fourier theory so as to predict stability of the milling system, computing efficiency and computing precision are improved, and theoretical support is provided for manufacture technicians to select reasonable cutting parameters to improve surface quality of a part. In high-speed numerical control processing, reasonable cutting parameters are selected according to stable lobe graphs, it is ensured that high-speed efficient processing is achieved without fluttering, processing parameters are optimized, high surface quality is obtained, and precision processing is achieved.
Owner:TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Control method and system of lithium battery pole piece rolling mill based on digital twin technology
ActiveCN110262284AHigh degree of visualizationOptimize processing parametersElectrode rolling/calenderingSimulator controlInformation transmissionPhysical space
The invention discloses a control method and a system of a lithium battery pole piece rolling mill based on a digital twin technology. The control method comprises the steps of: establishing a lithium battery pole piece rolling mill digital twin virtual model, achieving correlation of a digital space and a physical space through a novel rolling mill control system, and effectively enhancing the visualization degree when the rolling mill is operated by virtue of the constructed digital twin body to promoting the improvement of the actual control strategy and prediction and diagnosis of fault conditions. The control system comprises a control unit formed by a main control system, an information collection module, a drive module and an information transmission module, and is achieved in a mode of an embedded development board. The control method and system perform prediction of the processing process in advance to optimize the processing parameters to allow the actual processing result to meet a processing quality requirement and change the current situation that the existing control method is too lagged is changed.
Owner:江苏科瑞德智控自动化科技有限公司 +1
Processing method of titanium alloy TA15 thin-wall long boss
ActiveCN107717030AReduce distortionReduced milling distortionWorkpiecesMilling equipment detailsNumerical controlMachining deformation
The invention relates to the technical field of machining, in particular to a processing method of a titanium alloy TA15 thin-wall long boss. The processing method particularly comprises the followingsteps: removing the margin of a middle arm, removing the margin of the right side of the boss, removing the margin of the left side of the boss, finish-milling the middle arc, finish-milling the right side of the boss and finish-milling the left side of the boss. The processing method is mainly applied to milling of an axial long boss of the new generation aero-engine titanium alloy TA15 material, the adverse effects of machining deformation of thin part structure wall and long axial size in the processing process of thin-wall guide pipe parts are avoided, the technical bottlenecks of programming of milling processing numerical control program and determination of milling processing process parameters are overcome, and the shape and the size precision requirements of the titanium alloy TA15 material thin-wall long boss parts are guaranteed effectively.
Owner:SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
Computerized digital control system of laser metal surface enhanced processor
InactiveCN1339727ASimple control circuitEasy to operateComputer controlControl systemMovement control
In the laser metal surface enhancing processor, each of the two driving shafts is driven by a stepped motor and the computerized control system sends out motor stepping pulse via the control card according to the reinforced locus requirement to complete the motion control in two directions. The operation is performed via screen control to replace large amount of buttons and switches resulting in simple control circuit and operation panel and friendly operation interface. The control program is one under Windows98 environment and has user accessed machining locus parameters and partial machinetool structure parameters, and all these makes the system is programming-free and reconfigurable. In addition, the operation interface is programmable and the system is opened.
Owner:SHANGHAI UNIV OF ENG SCI
Automatic generation device for machine control command and parameter and its method
ActiveCN107065779AOptimize processing parametersReduce or eliminate wasteProgramme controlComputer controlMachine controlMathematical Calculus
The invention provides a command and parameter generating device comprising an interpreting module, a planning module, a simulation analysis module and an optimization calculus module. The command and parameter generating method includes that the interpreting module interprets the workpiece program to produce the track coordinates of the workpiece; the planning module interpolates the trajectory coordinates and generates the path information and velocity information of the tool; the simulation analysis module analyzes the trajectory characteristics of the tool by the path information and velocity information, and gives the cutting simulation message; and the optimization calculation module generates the optimal control parameters of the corresponding block according to the trajectory characteristics of the different blocks of the workpiece and the cutting simulation quality. The device described in the present invention is an auxiliary device which can be arranged independently of the machine control system or as a subunit of the machine control system and operates in the machine control system.
Owner:HURCO AUTOMATION
Manufacturing method of corrugated heat exchange tube
ActiveCN107784172AAvoid appearance design deviationIncreased processing contact areaDesign optimisation/simulationSpecial data processing applicationsNumerical controlMathematical model
The invention discloses a manufacturing method of a corrugated heat exchange tube. The manufacturing method comprises the following steps of (1), constructing the model of the contour parameter of a corrugated tube; (2), carrying out the section design of a roller wheel by utilizing a spatial envelope principle, and solving a contact line and the axial section of the roller wheel; (3), constructing a machine tool and carrying out simulation by using numerical control processing simulation software; (4), comparing a simulation result with an ideal-size corrugated tube, and estimating a deviation; (5), determining a cutter parameter and a processing parameter; (6), simulating by using finite element analysis software and calculating the resilient amount of a tube wall; (7), processing by using a rolling machine. According to the method, through establishing a mathematic model for processing the corrugated tube, the contact line and the axial section of the roller wheel are solved by utilizing the spatial envelope principle; further, the corrugated tube is processed in a simulation manner by applying the simulation software; through the compassion with the ideal-size corrugated tube,the tool parameter and the processing parameter are optimized and finally, the corrugated tube which is good in quality and high in performance is finally processed by using the rolling machine.
Owner:NANJING INST OF TECH
Processing method for large breadth thin stone boards and super-thin boards
InactiveCN101927530AUnbreakableHigh strengthStone-like material working toolsMetal layered productsAxial forceComposite plate
The invention provides a processing method for large breadth thin stone boards and super-thin boards, which comprises the following steps of: (1) splicing and combining a stone board and a base body to form a single-side compound stone base-body composite board; (2) halving and processing the single-side compound stone base-body composite board formed in the step (1) into a simple thin stone board and a composite stone board formed by compounding with the base body and the super-thin stone board; and (3) and decomposing binders through heating the composite stone board formed by compounding with the base body and the super-thin stone board processed in the step (2), and dividing the base body and the super-thin stone board into a base body and a super-thin stone board. The invention improves the bending strength of the super-thin board. Boards are not easy to break in the process of halving and processing. Compared with a general halving method for super-thin boards, the processing method can bear larger axial force. Therefore, the processing method improves the strength and the yield of boards, can realize optimal processing parameters, and can improve the processing efficiency.
Owner:SHANDONG UNIV
Ultrasonic-assisted glass heat-bending device based millimeter-wave heat source and control method
ActiveCN110240394AImprove heating efficiencyUniform temperature distributionGlass reforming apparatusUltrasonic assistedUltrasonic vibration
The ultrasonic-assisted glass heat-bending device based a millimeter-wave heat source and a control method. The ultrasonic-assisted glass heat-bending device comprises a machine frame; a feeding area and a discharging area are respectively arranged on two sides of the machine frame; a furnace cavity is formed on the machine frame; a control box is arranged at one side of the machine frame; a graphite mould and a variable-frequency millimeter-wave heat source connected with the control box are arranged in the furnace cavity, wherein the frequency of the variable-frequency millimeter-wave heat source ranges from 2.5 GHz to 20 GHz, and the power is of kilowatt magnitude; a cavity is formed in the graphite mould; a preheating area, a hot bending pressurizing area, a pressure maintaining area and a cooling area are arranged on the furnace chamber; a shifting fork executing mechanism used for shifting the graphite mold is arranged on the machine frame; and the preheating area, the hot bending pressurization area, the pressure maintaining area, the cooling area and the shifting fork execution mechanism are separately connected with the control box. According to the invention, the mold is heated more uniformly, the molding rate and material surface quality are remarkably improved by assistance of ultrasonic vibration, and parameters such as temperatures, pressure and the like are controlled cooperatively in different areas, so that requirements for manufacturing 3D ultra-thin glass with high surface quality are met.
Owner:GUANGDONG HUST IND TECH RES INST
High-oil barley granule compound feed with low pulverization ratio for pig and a preparation method thereof.
InactiveCN105831443ALow costReduce dosageFood processingAnimal feeding stuffAnimal scienceLarge dose
Owner:SHANGHAI XINNONG FEED
Thermal-mechanical coupling model-based workpiece surface residual stress control and adjustment method
ActiveCN109857061AShort calculation timeIntuitive knowledgeProgramme controlComputer controlThermal mechanical couplingFitness function
The invention discloses a thermal-mechanical coupling model-based workpiece surface residual stress control and adjustment method. The method includes the following steps that: a, a cutting test is performed, surface residual stress sigmai correspondingly obtained under each group of cutting parameters is measured, wherein the cutting parameters include cutting depths ap, cutting speeds V and feedquantities f; b, an orthogonal cutting force prediction model is constructed based on an Oxley prediction model and a J-C constitutive model; c, a workpiece temperature prediction model is constructed based on thermal stress formed by means of the superposition of the temperature of a shearing zone and a ploughing and cutting zone; d, a thermal-mechanical coupling-based workpiece surface residualstress empirical model is constructed based on the orthogonal cutting force prediction model and the workpiece temperature prediction model, and an expectation function is selected to describe the influence of each parameter; and e, the sum of the absolute values of the difference values of observed surface residual stress sigmai and predicted residual stress sigmasurface is adopted as a fitnessfunction, and a genetic algorithm is used to perform optimization, so that a proportional coefficient and an exponential coefficient can be obtained. The method of the invention has the advantages ofshort calculation time and convenient use.
Owner:GUIZHOU UNIV
Method of etching grating groove by rotating etching angle
ActiveCN105334560AEffective simulationOptimize processing parametersDiffraction gratingsGroove widthGrating
The invention discloses a method of etching a grating groove by rotating an etching angle. The method comprises steps: design grating groove parameters such as a groove width, a groove depth and a groove shape are loaded; ion beam etching machine parameters such as an etching speed and an etching ratio are initialized; grating parameters such as a grating line density, an initial grating phtoresist thickness and a grating duty ratio are initialized; a preset groove is cut, and the number of etching angles is determined; an etching angle is determined; the etching time is determined; the etching parameters are optimized, and whether normalized root mean square deviation of the etching result achieves a preset requirement is judged; if the preset requirements is not achieved, the number of etching angles is increased until the normalized root mean square deviation of the etching result meets an actual requirement; and if the preset requirements is achieved, processing is carried out according to calculation parameters. By adopting the method of the invention, the optimal processing parameters for the design groove can be acquired quickly.
Owner:UNIV OF SCI & TECH OF CHINA
Hobbing process parameter optimization method based on hobbing cutter spindle vibration response model
ActiveCN109933940AImprove reliabilityImprove accuracySpecial data processing applicationsProcess engineeringForce balance equation
The invention discloses a hobbing process parameter optimization method based on a hobbing cutter spindle vibration response model, which comprises the following steps of: analyzing the stress of a hobbing cutter spindle from the perspective of infinitesimal elements on the basis of the Euler beam theory and the mechanical bending deformation of materials, and establishing a hobbing cutter spindleacting force balance equation and a moment balance equation; obtaining a multivariate mathematical function relational expression of inherent frequency of each order of a hob main shaft and hob mainshaft vibration relative to each machining process parameter through solving, classifying hobbing process parameters, determining gear machining process parameters and hob main shaft process parameters, and finally optimizing the machining process process process parameters. According to the method, a mathematical function relational expression between the vibration quantity of the hob main shaftand each machining process parameter is established based on a vibration mechanism. The influence degree of the machining process parameters on hobbing is analyzed, the optimal machining process parameters are obtained, or the machining process parameter value range meeting the hobbing cutter main shaft precision requirement of the hobbing machine is obtained, and therefore the hobbing vibration amount is reduced, and the machining efficiency is improved.
Owner:CHONGQING UNIV
Ultra-thin ceramic fingerprint piece grinding technology
InactiveCN109551304AImprove stabilityIncrease pressureGrinding drivesLapping machinesMaterials scienceFingerprint
The invention relates to an ultra-thin ceramic fingerprint piece grinding technology. The ultra-thin ceramic fingerprint piece grinding technology is completed through ultra-thin ceramic fingerprint piece grinding equipment. The ultra-thin ceramic fingerprint piece grinding equipment comprises a rack and further comprises an upper polishing disc, a lower fixing disc, a lifting mechanism, a mediumspaying mechanism, a rotating mechanism and a control box which are mounted on the rack, the upper polishing disc is driven by the lifting mechanism located at the upper part of the rack, and the lower fixing disc is located at the lower part of the upper polishing disc and corresponds to the upper polishing disc; and a plurality of air suction discs with air suction holes are arranged between theupper polishing disc and the lower fixing disc, the lower part of each air suction disc is rotationally mounted on the lower fixing disc through a rotating shaft, and the outer walls of the air suction discs are driven by the rotating mechanism. The ultra-thin ceramic fingerprint piece grinding technology has the advantages that an ultra-thin ceramic fingerprint piece (the thickness is greater than or equal to 0.04 mm and less than 0.08 mm) can be machined efficiently and stably, and mass production is achieved.
Owner:GUANGDONG JANUS SMART GRP CO LTD
Multi-target rice milling unit scheduling optimization system based on ACO-BP
ActiveCN112808348AReduce broken rice rateImprove processing efficiencyGrain huskingGrain polishingNetwork modelIndustrial engineering
The invention discloses a multi-target rice mill unit scheduling optimization system based on ACO-BP. A 4*4 rice milling unit control system is designed, multi-target processing can be achieved among units through scheduling optimization, processing parameters of each rice milling are optimized, a rice breaking rate of a rice mill can be reduced, and processing efficiency of the units can be improved. The unit control system optimizes an internal utilization algorithm of the units, can regulate and control the processing parameters of each rice milling according to a single processing target, realizes an online whitening precision intelligent control of the units and reduces a operation cost of the rice mill. The rice milling unit control system is built in a manner of optimizing a BP neural network by using an ant colony optimization algorithm (ACO), the ant colony optimization algorithm can accelerate a learning rate of a neural network, convergence to optimal parameters is faster, and a neural network model for optimally regulating and controlling the rice milling units is built. A built rice milling unit database can perform iterative optimization on processing parameters and processing schemes through evaluation of products and learning ability of the neural network, and self-learning of the database is realized.
Owner:湖北永祥粮食机械股份有限公司
Method for judging machinability of aircraft component compensation layer
ActiveCN113378307AAvoid Scrap SituationsPrecise positioningGeometric CADSustainable transportationMachining vibrationsMachining deformation
The invention belongs to the technical field of aircraft component assembly, and particularly relates to a method for judging the machinability of an aircraft component compensation layer, which comprises the following steps of: obtaining a rule between a cutting load and a cutting parameter through a cutting test, and determining a limit cutting parameter; combining the structural characteristics of the section, partitioning the processing surface of the compensation layer, and calculating to obtain the deformation of all relative stiffness minimum points on the section and the minimum structural stiffness; designing a box section test piece according to requirements, performing partitioning according to box section structural characteristics, and obtaining deformation of all relative rigidity minimum points on a box section and the minimum structural rigidity through calculation; and determining critical machining deformation, and judging the machinability of the section compensation layer on the basis of the critical machining deformation in combination with rules among the parameters, so that optimization of the cutting parameters of all the partitions is achieved. According to the method, a process calculation and analysis method is provided for machinability judgment of the section compensation layer liner, the problems of machining vibration and debonding in the machining process can be predicted, and parts which cannot be machined can be accurately positioned.
Owner:CHENGDU AIRCRAFT INDUSTRY GROUP
Method for solving stress of thin substrate
ActiveCN113158518AAccurately evaluate the process quality of thin substrate processingOptimize processing parametersDesign optimisation/simulationConstraint-based CADPhysicsEngineering
The invention belongs to the technical field of precision measurement and analysis, and particularly relates to a method for solving the stress of a thin substrate, which comprises the following steps of: S1, acquiring basic parameters of the thin substrate of which the stress is to be analyzed; S2, establishing a finite element model of the thin substrate; S3, applying a unit stress load to each surface in the model in sequence, solving the finite element model, and outputting a solving result; S4, obtaining the center point coordinates of the surfaces to which the unit stress load is applied in the finite element model, and further constructing a matrix L including the center point distance relationship between the surfaces; S5, acquiring the surface shape of the real thin substrate, and drawing an accept-reject curve; and S6, solving the linear equation by adopting a regularization method, and calculating to obtain the real stress distribution of the thin substrate. The problems of discontinuous stress distribution and large fluctuation of the thin substrate caused by directly solving the equation set are solved, and extra physical damage is not introduced in the process of obtaining the stress distribution.
Owner:HEFEI UNIV OF TECH
Tobacco shred structure determining method and device suitable for thin cigarettes
ActiveCN110013048AOptimize processing parametersImprove stabilityTobacco preparationTobacco treatmentRegression analysisEngineering
The invention discloses a tobacco shred structure determining method and device suitable for thin cigarettes. The tobacco shred structure determining method comprises the following steps: tobacco shreds of different lengths are subjected to mixing combination through a mixing uniform design method, and a plurality of tobacco shred structures are obtained; the physical index and the smoke index ofeach cigarette made of the corresponding tobacco shred structure are detected, and variable coefficients of all the indexes are calculated; all tobacco shred component proportions in the tobacco shredstructures are subjected to quadratic polynomial stepwise regression analysis, regression function models of all tobacco shred components and the variable coefficients of all the indexes are established, the regression function models are optimized, and tobacco shred length intervals and the variable coefficients corresponding to all the optimal indexes are obtained; the variable coefficients ofall the indexes are compared through combination of the Delphi method and an adjacent index comparison method to determine weights of all the indexes; and the weights of all the indexes and the variable coefficients of all the indexes are subjected to weighted average calculation, all the tobacco shred component proportions corresponding to the minimum variable coefficients of all the indexes areobtained, and the optimal tobacco shred structure is determined.
Owner:CHINA TOBACCO SHANDONG IND
Method predicting deformation quantity produced during aluminum alloy thin wall member machine processing
ActiveCN105046031AAccurate prediction of deformationSmall amount of calculationSpecial data processing applicationsSurface layerFinite element software
A method predicting deformation quantity produced during aluminum alloy thin wall member machine processing, relates to the technical field of prediction for deformation quantity during aluminum alloy thin wall member machine processing and belongs to the field of machinery processing. A problem of large simulation calculation amount during the whole machine processing for the aluminum thin wall component in the prior art can be solved. Billet residual stress and surface layer residual stress of the aluminum alloy thin wall component machine can be measured; distribution of equivalent surface layer residual stress replaces distribution of the surface layer residual stress; the billet residual stress is input to an ABAQUS finite element software; parts to be removed during the processing are removed; the equivalent surface layer residual stress is applied to the ABAQUS analysis model; and the deformation quantity of the aluminum alloy thin wall component due to the co-action of the release of the billet residual stress and machine processing surface layer residual stress is calculated, so deformation quantity produced during aluminum alloy thin wall member machine processing can be predicated. The method can be applied to prediction for deformation quantity produced during aluminum alloy thin wall member machine processing.
Owner:HARBIN INST OF TECH
Machine tool vibration monitoring system and method based on LabView and single chip microcomputer
PendingCN106647624AEasy to analyzeEasy to carryProgramme controlComputer controlMicrocontrollerMicrocomputer
The invention relates to a machine tool vibration monitoring system and a method based on LabView and a single chip microcomputer. The system comprises a data acquisition unit, a PC upper computer program unit and a single chip microcomputer logic control unit, wherein the data acquisition unit acquires machine tool vibration data and the machine tool vibration data are transmitted to the PC upper computer program unit; the PC upper computer program unit analyzes and calculates the machine tool vibration data, and a control instruction is outputted to the single chip microcomputer logic control unit; and the single chip microcomputer logic control unit carries out logic processing on the control instruction to transmit spindle speed ratio change, feeding ratio change and sudden stop processing signals to the machine tool PLC. Acquisition and analysis of machine tool cutting vibration data and generation of a report are facilitated, an expensive vibration analyzer can be replaced, program adjustment according to requirements of a company can be carried out, link with a CNAS detection standard is efficient, and through carrying out simple wiring and changing a tiny small part of PLC programs only, dynamic control on the machine tool spindle and the feeding can be realized.
Owner:SHENYANG MASCH TOOL CO LTD
Process for machining in situ the peripheral surface of a rotating part, and apparatus for carrying out said process
InactiveUS20070087925A1Smooth movementOptimize processing parametersTurning machine accessoriesPositioning apparatusRotational axisEngineering
Process for machining in situ the peripheral surface (1100) of a rotating part, rotating around an xx′ axis (1), wherein a machining device is used comprising at least one plate (12) fixed to a frame and a tool holder (11) provided with a cutting tool (300), and mounted on the said plate such that it can move along a YY′ direction (3) substantially perpendicular to the xx′ axis of rotation (1). The tool holder is installed on the plate (12) such that it can pivot around an axis oriented along a ZZ′ direction (4) substantially perpendicular to the YY′ direction and to the xx′ axis of rotation. By combining a rotation of the tool holder around the XX′ axis and a translation of the centre (C) of rotation around the ZZ′ axis along the in-feed direction YY′, a displacement is imposed on the active end of the cutting tool (300) in a plane perpendicular to the ZZ′ axis. The device may also move along the third XX′ axis.
Owner:CARBONE LORRAINE APPL ELECTRIQUES
Molding process of five-meter scalloped segment of carrier rocket
InactiveCN111069394AGuaranteed machining accuracyGuarantee processing qualityEngineeringHeat treated
The invention provides a molding process of a five-meter scalloped segment of a carrier rocket. A previous secondary stretch forming process is changed, the stretch forming rate is increased, and thequick primary stretching forming process is adopted. The molding process comprises the steps of blanking; quenching heat treatment; stretch forming; allowance removal and finishing; artificial aging;chemical milling; machining; surface treatment; and packaging and delivery. The stretch forming process specifically comprises the steps of pre-judging various types of stretch forming trajectories and stress and wall thickness distribution change under the stretch forming rate in advance through analog simulation, and carrying out discretization treatment on transverse and longitudinal displacement through the transverse and longitudinal small-displacement progressive stretch forming trajectories to make the transverse and longitudinal displacement uniformly distributed in the whole stretch forming process. According to the molding process, the quick one-time stretch forming technology is adopted, and machining parameters are optimized; on the premise of ensuring the machining precision and surface quality of the five-meter scalloped segment, the production efficiency of products is improved to the maximum extent, the forming time of the products is shortened from 3.5 h to 1.5 h, andthe production cost is reduced.
Owner:TIANJIN AEROSPACE CHANGZHENG ROCKET MFGCO
Efficient grain-saving piglet-strengthening fermented compound feed for lactating sows and preparation method thereof
InactiveCN111296624AOptimizing the Steam Explosion ProcessReduce natural toxicityAnimal feeding stuffBiotechnologyNutrition
The invention discloses an efficient grain-saving piglet-strengthening fermented compound feed for lactating sows and a preparation method thereof, and belongs to the technical field of animal nutrition and feeds. The efficient grain-saving piglet-strengthening fermented compound feed for the lactating sows disclosed by the invention is prepared by solid-state fermentation of multiple raw materials. The feed prepared by the method is good in digestibility, high in utilization efficiency of agricultural and sideline products, high in safety and low in emission of nitrogen, phosphorus and heavymetals, and enables the lactating sows to be high in nutrient digestibility and high in production performance.
Owner:HENAN INST OF SCI & TECH
Simulation and analysis method of link image quality based on full-band optical processing surface error system
ActiveCN112113513BDetection accuracyOptimize processing parametersDesign optimisation/simulationUsing optical meansImaging qualityOptical processing
Based on the image quality simulation analysis method of the full-band optical processing surface shape error system link, it relates to the field of photoelectric imaging technology. The present invention designs the optical system structure according to the user index requirements, establishes the optical system link model, and processes the surface shape data based on the measured optical elements. , the low-frequency error simulation model and the medium-high frequency error simulation model of the mirror surface shape are established. The simulation data of low-frequency and medium-high frequency processing surface error are fused to establish a full-band optical component processing surface error simulation model, and the accuracy of the full-frequency optical component processing surface error simulation model is tested. After the data accuracy inspection is completed, the processed surface shape error data is loaded into the optical link simulation system for image quality analysis. The present invention sets a reasonable data sampling interval. Establish an accurate simulation model of processing surface shape error, which lays the foundation for high-precision, fast calculation optical system link image quality simulation analysis.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
A processing method for aircraft complex joint parts
Owner:JIANGXI HONGDU AVIATION IND GRP
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