In the 21st century, CAD modeling technology has not seen a major breakthrough that people have been waiting for for a long time, but it has made a lot of progress in application and practical technology, which is reflected in the following aspects:
Graphical interaction improvement
CAD software is a tool for product innovation. As a tool, it is easy to learn and use, and it is handy to form a friendly and intelligent working environment. Such a work environment can open up the user's mindset, free up his brain, and concentrate on design creation, not the order of operation or rules of use of the software.
1. Intelligent icon menu
Multi-level pop-up or drop-down menus are no longer sufficient for users. A good menu structure can make the design cycle 20% to 50%. The intelligent icon menu structure is the future development trend of CAD software.
The good menu structure is: the number of times the user moves the cursor between the graphic operation area and the menu area should be as small as possible, the menu level should be as small as possible, the menu should be intuitive, concise and clear, and the menu items should be automatically combined and adjusted according to the frequency of use. The structure of the operation instruction is very simplified.
2. "Drag and drop" modeling
Design is a flexible modification. Intuitive and real-time "drag and drop" design and modification of 3D entities has always been the goal of designers. With the support of variable technology, the flexibility of separate processing can be achieved by using shape constraints and size constraints. It has realized the function of graphically editing and modifying the common features on the part directly and intuitively in real time. The future development direction is to achieve an intelligent, complete "drag and drop" style.
3. Dynamic guide
At present, in some software, the operation mode of pop-up menus with the cursor at any time has been increasing. As the cursor moves, the dynamic guide automatically picks up, determines the type of all model elements and the relative position of the space, understands the user's design intent, memorizes the common steps, and prompts the user for possible work in the next step. This is a good application example of software intelligence.
Application improvement
1. Develop a highly integrated CAX system
In CAD software, there are two main ways to improve software. One is to improve overall performance, optimize internal data structures and algorithms, and improve ease of use; one is to improve functional integration and achieve more application functional integration under a software architecture. That is to use a CAX software to quickly and easily develop the products that customers need. It is expected that it will take only 3-5 years to form a complete and powerful CAX system in the market.
For example, from industrial design to structural design integration, CAID and CAD integration, to ensure that designers can express their intentions completely freely, from product appearance to internal structure, from smooth technological innovation, performance or structural improvement. And advanced rendering shading.
2. Knowledge fusion technology
Knowledge fusion technology is a technology that enables automated process design, management possibilities, and practical factors. It allows users to create and save their own rules and processes, and physical, chemical or engineering rules created in other areas can be integrated, such as the cost of assembly materials, the limits of machining tolerances, the stamping process and the mold injection process. It can be saved and evaluated, and a large number of automated process processes are implemented. Users can easily choose the solution they need, just as it is now to build parametric features. A large amount of process automation can revolutionize the industry with a reusable process.
3. Smart Wizard for specific industrial processes
Process Wizards combine industry-specific process knowledge to connect complex factors in design techniques to automated processes. For example, EDS's NX software has many intelligent process wizards: Injection Mold Wizard, Progressive Mold Wizard, Gear Engineering Wizard, Stamping Engineering Wizard, Welding Assistant, Processing Expert Advisor, Strength Wizard, Optimization Wizard, and more. These process wizards will greatly improve the efficiency of your workflow and your productivity can be multiplied.
4. Systematic modeling
Using systematic modeling, designers can view the complete product and its production process by changing any part of the product and making various variations. A new generation of CAD software takes parametric modeling to a more advanced system and product design level. System-level design parameters can drive down their subsystems, assemblies, and final parts from the product. Modifications to product definition templates are controlled and mapped to all relevant subsystems and components through an automated approach.
System function improvement
1. Add PDM function to CAD software
CAD software with PDM capabilities is gradually becoming recognized and accepted by users. Achieving design collaboration is one of the main development directions of future CAD. Designing collaborative virtual meetings facilitates free discussion and presentation of insights among designers, and the team can stereotype ideas and immediately see results in all aspects of the product. By eliminating communication bottlenecks, design collaboration capabilities can solve the coordination of key product design issues between engineers, suppliers, and customers. When team members are working on all aspects of product design and are located in different countries, cities or design teams, design collaboration makes it possible to share data from different locations, even teams in the same office building can get real-time sharing and inspection design changes. beneficial.
2. CAD in the PLM environment
In the PLM solution, CAD functionality is an essential part of it, referred to as PLM3D. There is a certain level of difference between the CAD function in the PLM environment and the positioning of the independently running CAD software. Independent CAD software emphasizes data association, CAD software with PDM function emphasizes data sharing, while CAD function in PLM emphasizes data management throughout the product life cycle, as well as local and enterprise companies working based on these data. Collaboration between departments and working groups.
In PLM's neutral CAD digital mold, the JT format can be used to realize the large assembly of virtual products with multiple CAD data sources, as well as the collaborative management of component manufacturers. PLM3D can also be used as the basis for digital factory layout. Data can also be used as simulation data for maintenance/repair of later products.
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