Variant Design Method Research Articles

Digital twin and parameter correlation-enabled variant design of production lines

ABSTRACT The rapid transformation of production lines into a new design scheme is the key to improving the market competitiveness of enterprises. The production line is a complex manufacturing system with a complex structure. There are multidisciplinary correlation networks between different design dimensions, such as causality, mapping, and transfer. Clarifying these correlative relations is the key to the design of production line correlation. In this paper, a descriptive system is built for the production line configuration model, the motion model, the control model, and the optimization model, and the design content of production lines is clarified. A design framework of production line correlation based on the digital twin technology is proposed, and an optimization system of design schemes is built in the form of hierarchical iteration. Polychromatic sets are used to identify the relationship between different dimensions. The high-fidelity simulation ability of the digital twin technology is taken advantage of to verify the proposed four-in-one variant design method in the mobile phone welding assembly line.

Assessment of organizational and technological reliability of the construction company in the construction of foundations

When choosing a construction company, it is important for the investor to assess its organizational and technological reliability, which affects the duration and cost of construction. It is proposed to use as a source of information about the reliability of the data on the development of capital investments by the construction organization for a fixed period of time. The purpose of the study – to offer a mechanism for assessing the organizational and technological reliability of the construction company in the construction of the Foundation. On the basis of the method of variant design all possible alternatives of simple technological processes in the construction of pile foundations were considered. Using the method of statistical testing of simulation models on each process flow, the most probable duration and cost of design work were determined. All the options for the development of capital investments were reduced to a statistical series, on the basis of which the curve of accumulated probabilities was constructed. On the curve of accumulated probabilities it is possible to determine the probability of building foundations at the right time with the required value of the index of development of capital investments. Variant design of the construction process allows to develop simulation models of construction of any foundations, on the basis of which the curves of the accumulated probabilities of the indices of development of capital investments for each type of foundations are formed. These curves serve as the basis for the investor in determining the organizational and technological reliability of construction organizations.

ЧИСЛЕННЫЙ МЕТОД ВАРИАНТНОГО ПРОЕКТИРОВАНИЯ ЧАШИ БАССЕЙНА И ЕГО ТЕХНИКО-ЭКОНОМИЧЕСКАЯ ОЦЕНКА

ЧИСЛЕННЫЙ МЕТОД ВАРИАНТНОГО ПРОЕКТИРОВАНИЯ ЧАШИ БАССЕЙНА И ЕГО ТЕХНИКО-ЭКОНОМИЧЕСКАЯ ОЦЕНКА

Variant Design Method of Series Products Based on Skeleton

Customers’ individual and rapid product customization demands for 2K-V series reducers are taken as the study background. The rapid modeling method of the product skeleton and the parametric design method of the product level are studied. Products’ assembly models and templates of products’ skeleton models for series products are created on the basis of analyzing the structure similarity. Through changing parameters’ values of the skeleton template the product’s assembly model can be updated automatically and this template is rapidly transformed to the product instance so as to realize the rapid variant design. The above method not only is effective to 2K-V series reducers but also has reference value to others series products’ design.

Clutch Product Rapid Variant Design Based on Tabular Layouts of Article Characteristics

Based on intensive study to variant design method in product parametric technology，the paper put forward to rapid design system which have been successes used in clutch company, The tabular layouts of article characteristics describe standardization and regularization information of product , can expediently implement the product variant design and variant response of downstream process. The method firstly computes clutch parameters according to outside requirement, then inquired if there is existed product, then decided whether to design a new product or get original product. After this process, then acquire the product main model, which can abstain geometric model and realize some other analysis and virtual simulation, at last, generated satisfying product. The method in this paper have been successful used in clutch company’s design process, and highly improve it’s products creation ability and products competition in market.

Research on the Variant Design Method Based on the Integration of CAD/CAE

Component variant design method based on parametric design technology and parametric CAE technology are discussed. Based on the integration of CAD and CAE, a variant design method with the function to satisfy engineering constraints is put forward. Using VC++ and Jscript as developing tools, CAD system (SolidWorks) and CAE system (ANSYS) are redeveloped and integrated. A variant design method based on the integration of CAD/CAE is realized. A prototype system of the above variant design method is developed. As an example, variant design of workbench of a machine tool is realized. The variant design method and the variant design prototype system are verified.

Research and Implementation of Variant Design for Longitudinal Roadheader’s Cutting Unit

To support rapid design of longitudinal roadheader’s cutting unit better, an approach for product variant design based on parametric modeling was presented. According to the function and structure of longitudinal roadheader’s cutting unit, this paper partitioned the function modules of cutting unit and analyzed its parametric models by using theory and key technologies of variant design method. On the basis of the existing 3D models, variant design of geometry shape features, main parts and assemblies of longitudinal roadheader’s cutting unit had implemented through re-development on Computer-Aided Design platform. It proves that the variant design method can accelerate product design process, reduce costs for product design and ensure the quality of product design. And the instantiation could be as a reference of similar product’s rapid design.

Variant Design of Hydraulic Support

As is known to all, new mechanical product design is always on the basis of the original product, so to better use the exiting design resource, a mechanical product variant design method is presented. The new method is based on SML and parameter CAD. According to different geological conditions of coal mine, different types of hydraulic support are needed to design. So as a typical kind of mechanical product, hydraulic support is given as an example to demonstrate the new variant design method. Finally with SOLIDWORKS as a specific application object, integrated with SQLServer2000 database, a hydraulic support variant design system is realized by Visual Basic program, which shortens the cycle of mechanical product development and reduces duplication mechanical design greatly.

A Variant Design Method of Assembly Based on Tree Structure

In the current market demand of rapid response manufacturing, the product variant design technology is one of the key technologies. Product variant design principles and methods are first described. Then, product dimension parameter is analyzed and product dimension parameter transferring structure is studied. Applying tree theory to product variant design, a dimension relation driving-tree of components and parts is constructed and the significance of driving-tree statistics and a dimension parameters transfer method are presented. The methods and processes which are applied to variant design and the sorting algorithm of relations are described in detail. A parameterized variant design module integrated with SolidWorks was developed with VC + +. All the above mentioned methods and processes are verified by taking a joint coupling product as an example.

Research on Assembly Variant Design Based on Complex Network

To realize the variant design of assembly containing standard component, both type characteristics and parameter characteristics of standard component are studied. With complex network theory, the parameters of assembly are analyzed. A method of assembly variant design is presented. UG (Unigraphics) is re-developed with VC++ and UG/Open. A variant design module is developed, and assembly variant design is realized.

Component Variant Design Method Integrating Dimension and Tolerance

Product variant design is one of the key technologies of Manufacturing Enterprise for responding market demand. During the product variant design, tolerance variant design plays an important role. However, tolerance variant design is considered rarely in the researches of product variant design. To solve the problem of tolerance design in product variant design, a component variant design method integrating dimension and tolerance is presented in this paper. The fundamental and implement of component dimension variant design is introduced. Through analyze the conventional tolerance design method; the status for tolerance variant with its implemental dimension is marked as fixed tolerance value, fixed tolerance grade and tolerance value variant with special regular. The equation of dimensional tolerance variants with the value of implemental dimension is presented. So the procedure of component variant design method integrating dimension and tolerance is proposed. Finally, a case study of output shaft of reducer illustrates the implemental process of proposed method. Result comparing with conventional method shows effectiveness of proposed method.

Variant Design Method of Assembly Consisting of Different Types of Parts

Variant design has been recognized as an effective measure to implement mass customization. Assembly consists of different types of parts. Its variant design is a profound issue need to be explored. Three aspects were discussed in this paper, namely, 1) part classification and dimension constraint satisfaction priority, 2) part reuse, 3) dimension conflict and variant postponing. Firstly, dimension constraint network among parts was constructed based on graph. And variant dimension transferring was exploited. Secondly, reusable part can be found from existing parts through similarity analysis. Thirdly, aiming at dimension constraint conflicts, variant postponing was proposed to concentrate variant design to few parts so as to reduce the number of variant part.

An Integrated Variant Design Method of Dimension and Dimensional Tolerance

To improve the efficiency of variant design, it is not only needs dimension variant design but also needs dimensional tolerance design method. The method to extract tolerance information from parametric model of a part, the method to calculate tolerance value of a dimension according to its accuracy class, the method to place tolerance information to a dimension are researched. A dimensional tolerance variant design method of part based on the above three methods and parametric technology is put forward. The dimensional tolerance variant design method is integrated into dimension variant design method and an integrated variant design method is obtained. An integrated variant design module which can be integrated into SolidWorks is developed. As an example, the methods and the integrated variant design module is applied to an output shaft and the methods and the variant design module are verified.

Research on Variant Design Method of Dimensional Tolerance Based on Parametric Technology

Product variant design is one of the key technologies of Manufacturing Enterprise for responding market demand. During the product variant design, dimensional tolerance variant design plays an important role. However, dimensional tolerance variant design is considered rarely in the researches of product variant design. To solve the dimensional tolerance variant design during product variant design, information expression, extraction and labeling method of dimensioning of dimensional tolerance of part dimension model is investigated. A variant design method with dimensional tolerance is presented in this paper. In the method, dimension variant design and dimensional tolerance variant design are integrated, so dimension variant design and dimensional tolerance variant design are implemented concurrently. A part variant design module with dimension and dimensional tolerance based on SolidWorks is developed for using Visual C++. Finally, an example of shaft illustrates the proposed method.

A Variant Design Method of Assembly

To improve the design efficiency of product, the variant design method of assembly is researched. Firstly, the identifying and extracting method of assembly constraints is researched, and an identifying and extracting method of assembly constraints based on the re-development technology of SolidWorks is presented. With the identifying and extracting method, assembly constraints are obtained and a relationship network of them is built. Secondly, a method for dimensions to transfer around the relationship network of assembly constraints is researched and a dimension transfer method is put forward. Then a dimension modify method of assembly based on the dimension transfer method is obtained. Lastly, a variant design method of assembly based on the dimension transfer and dimension modify method is presented and a variant design module integrated into SolidWorks is developed. As an example, all methods are applied to a coupling assembly, and the methods are verified.

Variant design for mechanical parts based on extensible logic theory

A new variant design method of mechanical part is proposed based on extensible logic theory, to support design knowledge reuse more efficiently in computer aided conceptual design. In this method, matter-element, event-element and relation-element are used to characterize the feature information, connection constraint relations and topology variant operations of mechanical conceptual structures respectively. Extensible composite-element model of product part is established sequentially based on the above three basic-element models (matter-element, event-element and relation-element). Moreover, five types of variant operations are defined in order to realize structure variations and shape design of mechanical parts. Finally, an example of shaft housing part in grinder component is taken to explain the part variant design process in details, in which the efficiency and effectiveness of this method are illustrated simultaneously.

Research of Variant Design Method for Product-Level

To solve the problem such as large amounts of repeated designs and long design cycle in the traditional design process of crane, by analyzed the current variant design methods, a product-level variant design method was presented based on product configuration technology, parametric design technology and modular product design. The theory and the flow of variant design were explained in detail. A variant design platform for portal crane was developed. Based on making the best of enterprise resource, the product design efficiency was improved and the cost of the production reduced.

Dimension parameters transfer method of configuration product and its application

In product configuration of mass customization, sometimes it’s necessary to modify some dimensions of product modules, how to ravel the affection relation of modules’ di- mension is the key of precision and efficiency of product con- figuration. Applying complex network theory to mass customi- zation field, based on tabular layouts of article characteristics and main structure of product, a dimension relation network of components and parts is constructed. With the use of connec- tive subnet detecting method and simple path detecting method of complex network, a new dimension parameters transfer method is presented. It works well whether within a single component or between different components. A new method of variant design of configuration product and a new modification method of configuration product are put forwarded. As an ex- ample, all methods are applied to joint coupling product, and the methods are verified.

Online design reuse tool for the support of the generation, embodiment and detailed design of products

Design reuse is becoming a widely accepted strategy to meet the increasingly fierce competition and highly diversified customer needs in product development. In this research, an integrated and systematic framework to computerize the design reuse process was formulated and a prototype online design reuse system was implemented. This system embodies the evolutionary process of design reuse and supports design reuse from the original requirements through the concept and embodiment stage to achieve a final detailed design. The prototype system retrieves products using multi-indices and a stepwise winnowing method. The advanced-search module of the system solves a design problem using two intelligent search methods to retrieve reusable products. Finally, the system can adapt these retrieved products to generate a new design. The design reuse framework is based on related design methodologies such as function taxonomy, product family, etc. Genetic algorithms and case-based reasoning are adopted in this system to achieve an intelligent search. The variant design method is used in detailed design reuse.