Research And Development Of 3D Rapid Design System For Doors And Windows

As building energy efficiency standards become higher and higher,high-end system energy-saving doors and windows are increasingly favored by the market.In order to meet the development needs of the industry,door and window manufacturers need to continuously expand their production capacity and scale,relying on high efficiency,low cost and high quality to increase market competitiveness.In view of the signing and implementation of enterprise orders,the efficiency and effectiveness of the three-dimensional design of doors and windows directly affect the raw material cost,labor cost and time cost of the enterprise,which in turn affects the efficiency of the enterprise.The existing design software mainly focuses on the two-dimensional graphic design of doors and windows,which is difficult to meet the door and window enterprises actual demand.In order to improve the design efficiency of the 3D model of doors and windows in the enterprise,this paper analyzes the types of doors and windows in the enterprise,the graphic information of the components and the assembly relationship,and the design problems of the doors and windows:First,for the problem of the variety and quantity of door and window components,the parameter modeling method and model library design of door and window components are studied.Analyze the working principle of the dimension-driven parametric modeling method and the feature-based parametric modeling method,and describe the implementation process of these two methods by taking the frame edge and the inner opening actuator as examples;Based on the classification principle of components,a model library of door and window components was designed.Based on the similar characteristics of the model structure,similar models in the model library were retrieved,and the parametric design was used to reuse the models,which was convenient for the unified management of door and window component models.Secondly,according to the characteristic that some door and window components can be modeled by the same three-dimensional model mapping algorithm,a door and window node graph is quickly constructed.Analyze the door and window structure and the assembly relationship between the components,use the undirected graph and graphics polygonprocessing algorithm to realize the reconstruction of the door and window component graphics,and then based on the BP neural network the matching algorithm and the graphic position conversion algorithm move the graphics of each component to the matching position,and complete the preliminary construction of the door and window node graph.Based on the constructed node graph,the 9 cross model algorithm is used to judge its topological relationship.Realize the two-dimensional node graph of doors and windows construction speed,and the fast construction of 2D node diagram of doors and Windows is realized,and assembly models and multiple 3D entities are generated in parallel based on the node graph.Finally,according to the rapid design method of doors and windows,a three-dimensional rapid design system for doors and windows is established.Using Free CAD as the basic platform,according to the overall system design plan,using the Python language to integrate the established parametric design module,model library establishment and management module,node graph rapid construction module,etc.to build a three-dimensional rapid design system for doors and windows;The functional modules of the system have been tested and verified by examples.The results show that the system can effectively increase the design speed and provide efficient data support for the intelligent manufacturing system.