40 results about "Product engineering" patented technology

it is a blank car product process digit design method, which comprises the product data module establishing, process designing, product line simulation and optimization and comprises the following steps: to input the blank car information into the product data module establishing system and establish one product engineer module; to design the working poison , sequence and resources on the whole product line through process sub-system; to make the simulation and optimization and adjusting of the processes of wielding, glue-coating and frame-dissembling on the whole product line through product line simulation and optimization system.

The invention discloses high-temperature-resistant heat-proof paint and preparation and use methods thereof. The high-temperature-resistant heat-proof paint is prepared from organic silicon resin, epoxy resin, heat-insulation fillers, an assistant and a solvent, and an amine hardener is added when the paint is used. Compared with the prior art, the high-temperature-resistant heat-proof paint provided by the invention has the advantage that a paint film is in a good condition when the paint tolerates the high temperature of 600 DEG C, and the paint has an excellent static heat-insulation performance (at 230 DEG C) and can be used for favorably protecting an aerospace carrier from high-temperature damages, so that the problem on heat protection of the aerospace carrier is solved; and after being applied to the heat-insulation protection for main wings multiple times, the paint is proved to be completely capable of meeting the requirement of product engineering application.

The invention discloses an engineering data change method and apparatus. The method comprises the steps of obtaining changed structure information of a target object; traversing the structure information, and extracting changed part information and/or technological process information of the target object; and based on a pre-defined engineering change model, processing the changed part information and/or technological process information to generate a change notice and/or a change difference data table of the target object. The technical problem of low engineering change efficiency caused by dependency on manpower for data organization in an existing product engineering change process is solved.

A product line engineering (PLE) feature modeling structure called a multistage configuration tree that supports the engineering, deployment and maintenance of complex product family trees is provided. Feature selections and downselections are incrementally staged throughout the nodes in a product family tree. Feature decisions made at any node are inherited by all descendants of that node, thereby defining a product family subtree.

The invention provides a method for finding topological neighbors in sampled data of physical surface and belongs to the technical field of reverse product engineering. The method is characterized in that constructing a dynamic spatial index for physical surface sample points through an R* tree; subjecting the index to depth-first traversal to quickly acquire a k-nearest neighbor point set of target sample points, using the k-nearest neighbor point set as initial reference data for topological neighbors of the target sample points, describing distribution law of the sample points by kernel density estimation according to a relation between neighbor finding and sample point distribution, ranking the sample points in the initial reference data according to their probability densities, selecting Omega sample points of highest probability density to define a maximum point of local probability densities, determining a finding direction according to the maximum point, allowing the initial reference data to extend moderately to a sparse area so as to reduce the degree of neighbor information loss, and performing iterative computing so as to acquire complete topological neighbor data of the target sample points. The method has the advantages that topological neighbor data of uniform or non-uniform sampled data of a complex profile can be acquired fast, finding results include k neighbors, Voronoi neighbors and other effective neighbor data, and the local profile features of the sampled data of can be better indicated.

A method and apparatus for computer modeling the production process is disclosed. An integrated product and process engineering system may be a computer modeling system that models both a generic production process and a specific individual production process. The integrated product and process engineering system may store a time dependent process parameter related to the specific product design and organize the time dependent process parameters by product variants. The time dependent process parameter may have a parameter value and a start time. The time dependent process parameters may be input/output component consumption parameters, activity duration parameters, resource capacity consumption parameters, and activity scrap parameters.

The invention discloses a software development system and mode based on template design under an Android platform. The system comprises a UI design pool unit, a background server Portal unit and an Android terminal unit. A communication protocol is arranged between the background server Portal unit and the Android terminal unit. The UI design pool unit is used for setting all supported UI interface systems. The UI interface systems are imported into a MySQL database through the background server Portal unit, so that a template code and a menu code are well configured, and are packaged into Json format data through the communication protocol. The Android terminal unit analyzes the data which are packaged to be in the Json format through the communication protocol, and accordingly the template code is recognized and skips to a corresponding interface. According to the software development system and mode, after the modified menu is clicked, an Android App software code does not need to be adjusted again for the interfaces which should be displayed, and the background server Portal unit is used for configuration directly. The same set of Android project engineering code is used in the unified mode, a plurality of sets of App engineering do not need to be maintained, product engineering code branches are reduced, repeated development and test work is also reduced, and cost is lowered.

The invention provides a probe test circuit and a design method thereof. The method comprises the following steps of: connecting a fuse wire probe pad and a fuse wire fusing circuit through a plug-in unit; connecting a peripheral test pad and a peripheral test circuit through a plug-in unit, wherein the fuse wire probe pad is positioned in the peripheral test pad; and separating the fuse wire probe pad and the peripheral test pad with an electric isolating layer. The probe test circuit and the design method thereof provided by the invention are easy for testing hardware and programs of development engineers, and production and maintenance of online product engineers, shorten the development period to the greatest degree and reduce the cost.

Product line engineering testing is provided by segmenting a workflow into variable and common activity areas. A workflow decision node can be generated to isolate the segmented variable area, and a stub activity is generated and substituted into the workflow in place of the segmented variable activities. The stub activity can be configured to generate valid output for the substituted variable activities, and can be configured for black-box, gray-box, and white-box behavior.

The present invention provides a shape-preserving simplification method for object surface sampled data, belonging to the technical field of reverse product engineering. The shape-preserving simplification method is characterized by: taking sampling points and a near neighbor point set thereof as surface partial samples, and obtaining normal information of object surface sampled data based on a principal component analysis method; calculating a normal included angle mean value set phi between the sampling points and a topological near neighbor point set thereof; taking the normal included angle mean value set phi as a clustering object, estimating a natural clustering number of the normal included angle mean value set phi based on a gap statistic algorithm; performing clustering for the normal included angle mean value set phi through a k-mean adaptive clustering algorithm to obtain a natural clustering result of the object surface sampled data; and setting simplification threshold values for data sampling points of each cluster according to different shape features of the sampling points so as to achieve adaptive simplification of the sampling points. The shape-preserving simplification method of the present invention can quickly perform adaptive clustering of the object surface sampled data to realize intra-cluster simplification, so as to achieve shape-preserving simplification of the whole point cloud data.

The invention relates to a split-stirling cryocooler air inflation and performance test bed, comprising a vacuumizing device used for vacuumizing a cryocooler, a helium gas injection device used for injecting a helium gas into the cryocooler, a helium mass spectrometer leak detector used for detecting leak of the cryocooler and a test system used for testing cooling performance of the cryocooler,wherein the cryocooler, the vacuumizing device, the helium gas injection device and the helium mass spectrometer leak detector are connected with the test system. The test bed provided by the invention solves many problems appearing in a manual operation process and is integrated with later data processing and report generation. The test bed provided by the invention is high in automation degree and high in reliability and can achieve unattended operation, so that research and development time is greatly shortened and product engineering application level is improved, and the test bed is innovative, is a leading technology in China, has a wide use space and can produe relatively high economic benefit.

The invention relates to a ceiling lamp module, which comprises a tray. A lamp tube is fixed on the tray through a clip. An inverter is semi-embedded into the tray. A plurality of locking slots are arranged at both sides of the tray and matched with a lamp panel positioning hole of a ceiling lamp. The tube is electrically connected with the inverter through a metal cap at the end of the tube. The ceiling lamp module provided by the invention has consistent geometrical connectors and consistent input and output interface units because the tray, the lamp tube, the clip, the locking slots and the inverter constitute a whole to form a module. Modules of same type can be interchanged so as to reduce the complexity of product engineering. The ceiling lamp module can be directly installed on a base plate of the ceiling lamp by means of screw lock or slot, and is convenient to disassemble. Customers can match electronic elements and tubes freely according demand such as brightness so that the ceiling lamp module is suitable for lampshades of ceiling lamps of various specifications in the market and has good universality.

The invention discloses a method for distributing subsystem failure rates in the satellite design process. The subsystem number, the subsystem device number, equipment inheritance categories and other information in satellite design parameters are utilized, the complex rates, the inheriting degrees, the same platform satellite ontrack failure conditions, task time lengths and the development period lengths of satellite subsystems are comprehensively and quantitatively compared, the distribution factors of the subsystems are calculated, and the reliability requirements of a user for the overall satellite are reasonably distributed to the subsystems. The method is put forward by the machine heat engineering department of the Spaceflight East Red Satellite Co. Limited, and is preliminarily used and popularized in a plurality of satellites, index distribution is reasonable and accurate, and large secondary adjustment is not carried out on indexes in the development process. Through the method, the reliability index requirements of the overall satellite for the subsystems meet the actual condition of composite product engineering development better, reliability improvement of products is facilitated better, and implementation of the reliability target of the overall satellite is guaranteed.

The invention relates to a cleaning treatment system for automobile part product engineering. The cleaning treatment system for the automobile part product engineering comprises a bottom supporting system. A top supporting connecting mechanism is installed on the upper portion of the bottom supporting system. A dust removal system is installed in the middle of the bottom supporting system. The left side and the right side of the dust removal system are provided with a first powder waste feeding pipe and a second powder waste feeding pipe correspondingly. The lower portion of the first powder waste feeding pipe and the lower portion of the second powder waste feeding pipe are provided with a first powder waste feeding pipe and a second powder waste feeding pipe correspondingly. The upper portion of the dust removal system is provided with a powder waste discharging pipe. A powder waste collecting system is installed on the left side of the powder waste discharging pipe. The left side and the right side of the bottom supporting system are provided with a left powder waste sucking device and a right powder waste sucking device correspondingly. The cleaning treatment system for the automobile part product engineering can effectively remove powder waste for the automobile part product engineering and can be conveniently used at different angles.

The invention relates to an automobile part product spraying system. The automobile part product spraying system comprises a left support mechanism and a right support mechanism, a liquid sprinkling system is installed between the left support mechanism and the right support mechanism, and the bottom of the liquid sprinkling system is provided with liquid sprinkling holes. A liquid supplying system is installed on the right support mechanism, the liquid supplying system is communicated with the liquid sprinkling system, a liquid storing system is installed at the right side of the liquid supplying system, a liquid inlet mechanism is arranged between the liquid supplying system and the liquid storing system, a liquid pressing plate is installed in the liquid supplying system, a liquid pressing plate joint pin is arranged on the upper part of the liquid pressing plate, and a suspension rope is arranged on the lower part of the liquid pressing plate. The automobile part product spraying system can spray liquid during the automobile part product engineering machining process effectively, pollution to the environment is reduced, the automobile part product spraying system can be implemented conveniently, and the automobile part product engineering machining effect is improved.

The invention discloses a polycarbonate added engineering plastic preparation method and application thereof. The method comprises the steps: mixing polypropylene glycol adipate, polycarbonate, ethylene-ethyl acetate copolymer, calcium oxide, methyltin mercaptide and an ethanol solution to obtain a primary mixture, then adding into polystyrene and polyethylene oxide dispersion liquid, adding an antioxidant, performing standing treatment, collecting precipitate, washing and drying to obtain a modified mixture, then mixing with decabromodiphenyl ethane to perform warming and stirring reaction toobtain a middle mixture, then performing secondary modification to obtain a secondary modified mixture, then reacting with ethylene-propylene-diene monomer and deionized water in a high-pressure reaction kettle under the helium environment to obtain a high-temperature reaction material and finally smelting and extruding to obtain finished-product engineering plastic. The heat resistance strengthof the prepared engineering plastic is obviously improved, and the prepared engineering plastic has a good application prospect in the field of electric engineering.

A product line engineering (PLE) multistage configuration tree that supports the engineering, deployment and maintenance of complex product family trees is provided. Feature bundles which combine a group of feature decisions into a single bundled offering are inherited by the children of the node in the product family tree where they are defined. The children see only the smaller collection of bundled offerings rather than all the possible combinations of the multiple feature offerings that are encapsulated by the feature bundle.

The invention discloses a method for automatically generating a BOM by using a CAD VBA function, and relates to the field of computer aided design. The method is characterized in that the method comprises the steps that S1, an AutoCAD assembly pattern template is prepared, which comprises a drawing frame and a drawing question template of an assembly drawing and a drawing frame and a drawing question template of a BOM; S2, a VBA module is installed in AutoCAD software, and a VBA project is established; and S3, a VBA program is written into the VBA project, and the VBA program is compiled in aVB language and used for processing an assembly pattern file. The method overcomes the defects as follows: an existing manual operation mode is large in operation amount and prone to making mistakes,and the associated implementation workload in the product engineering change process is large; the existing development software needs to use a specified database, so that the software purchase cost and the enterprise operation cost are high; although an automatic BOM can use a custom template, but the custom depth is insufficient, and the standardization requirement is difficult to meet.

The invention discloses a vehicle-mounted Ethernet software refreshing method and device. The method comprises the steps: S1, providing options of vehicle refreshing and single Ethernet control unit refreshing through a communication access programming language CAPL script, responding to the options of vehicle refreshing or single Ethernet control unit refreshing by a user, and configuring the Ethernet control unit to diagnose refresh information; S2, respectively loading an Ethernet refreshing security algorithm file and Ethernet to-be-refreshed program software; S3, executing refreshing, analyzing a refreshing result after refreshing is completed, and generating a refreshing report. According to the method, secondary development is carried out on the Ethernet function through the CAPL, and an Ethernet software refreshing tool for customizing Vector does not need to be purchased, so that the development cost can be saved; the threshold of a user is reduced, various refreshing means are provided for offline and product engineers and the like, and necessary technical support can be provided when the development of the Ethernet refreshing function of the diagnostic instrument is not perfect.