Computer aided design? CAD？ ) refers to the use of computers and their graphics equipment to help designers with their design work. Below, I searched and sorted out the application of CAD technology in mechanical design for you. Welcome to read, I hope it will help you! For more information, please continue to pay attention to our fresh graduates training network!
1, Computer Aided Design and Its Importance
1. Computer Aided Design
Computer aided design (CAD) is to help designers design machinery by using some drawing software through computers. It turns out that mechanical design is done by hand drawing, which saves a lot of time and greatly improves work efficiency. Using computer software, it is also convenient for designers to carry out some other operations to make the design more reasonable, and it is also convenient for designers to modify the designed products, so that the products have higher quality. In addition, designers can also simulate products on the computer to ensure the rationality of the products.
2. Importance analysis
Mechanical design is an important part of mechanical engineering and a prerequisite for mechanical production. At the same time, it is also an important factor to determine the mechanical performance, which depends on the design quality. Narrow mechanical design means that in the process of technical design, broad mechanical design should analyze the working principle of machinery, the strength of mechanical structural materials, the shape and size of mechanical parts and the energy transmission mode according to the requirements of designers and existing conditions. And form a specific description as the basis of mechanical manufacturing. This is a creative job, based on successful experience. Only by combining the two can we design a high-quality machine.
All mechanical design steps need the help of computer, and graphic editing and data calculation need the support of software. In addition to these specific tasks, we can also simulate the model on the computer according to the drawings, analyze the product performance and stress, and make relevant modifications according to the existing conditions to continuously improve the quality. Computer application technology is more and more widely used in mechanical design.
2. that application of CAD technology in mechanical design.
1.3D modeling, engineering analysis and reporting applications
When using solid modeling design, it will bring convenience to the design work to process the test questions by computer, and the modeling of things can be displayed more reasonably through software processing technology. Using computer to analyze data makes data analysis easier and improves work efficiency. In mechanical design, some special data and reports can be interpreted by computer.
2. The application of 2.CAD in reverse engineering
Reverse engineering is a means of absorbing advanced design, and technology research and development is very important, but the research and development cost is very expensive. Due to the influence of existing conditions, some technologies will take a long time to mature. Therefore, we should make full use of scientific and technological achievements in design and innovate constantly on the basis of integrating new technologies.
After the Second World War, developed countries constantly improved computer technology and provided technical support for mechanical production. Reverse engineering can achieve the goal of product innovation only by understanding the product under physical conditions and constructing the part model in reverse. Before? Reverse engineering? Applications focus on physical objects. The innovative design of the physical model is based on the original product, reflecting the product performance, and transforming the physical model into a virtual model through coordinate measurement method and CAD drawing software. Using computer-aided function to process products, various technologies can be used to realize reverse conversion design. Data can be used to draw a grid, points can be simulated to get a continuous surface, and then the surface can be repaired to get a physical model. SCAN-TOOLS technology is used to cut and extend the generated surface, and the surface is transformed into a solid. Parametric design is realized by related software, and model reconstruction is completed.
3. The application of 3.CAD in the die design of automobile panel.
CAD technology is the pioneer of enterprise technology application. This technology has completely changed the traditional technology in China. The rise of new technology has promoted the development of China's automobile enterprises. Mold manufacturing, CNC machining and other aspects play a powerful role. Such as automobile mold CAD technology and automobile body panel CAD technology, automobile manufacturing industry is intensive and labor-intensive industry.
Automobile panels are internal parts such as automobile body, engine and sheet metal. It is assembled from automobile panels, which is not only powerful, but also generous, beautiful, high-quality and smooth. In the newly designed and developed automobile, the body plays a leading role, especially in the design of stamping die. The traditional car body development is to provide available information for the car body with physical model, in which the error and deformation of the physical model will affect the design accuracy and efficiency of the car body stamping die. In order to improve the accuracy and efficiency, ensure the quality and quantity, we must break the traditional mold design and manufacturing methods. Among them, adopting CAD technology is the key.
Stamping dies generally go through several processes such as drawing, trimming, shaping and punching. The most important thing is auxiliary surface design. In the design of solid mold, CAD technology can be used to avoid the potential interference factors such as cavity, concave cavity, punch and stiffener. Before designing the solid mold, the NC tool path program should be drawn first, and then the feasibility of the machining process should be checked. In the surface design of stamping parts, special surface design software must be used to ensure that the surface of stamping parts is consistent with the surface of die.
CAD technology plays a key role in modeling, mold structure design, simulation products and cross-library use. Although CAD technology can be parameterized and easily combined with CAM, the computer runs slowly, the software takes up a lot of hard disk and memory space, the design standardization is low, the specificity is not strong, and the openness, reliability and standardization are not enough. However, only by modifying the corresponding parameters and local area modification can the design efficiency be improved.
3. Advantages and disadvantages of computer-aided design in mechanical design.
1. Computer-aided application shortens the design cycle.
It takes a long time to design parts with complex geometric structures by previous design methods, but if computer software is used for three-dimensional design, complex geometric mechanisms can be built with some simple geometric bodies, which greatly reduces the difficulty, and parts can be reorganized to design better products, which not only shortens the design cycle, but also improves the work efficiency.
2. The application of computer-aided makes the design and modification of parts more convenient.
If there are some mismatches in the part design, it will be very troublesome to modify it in the past, but with the help of the computer, it is very convenient to put the part into the assembly environment for testing. Seeing every step of part design, it is easy to find problems and provide convenience for part modification.
3. The application of computer aided design is helpful to observe the assembly of parts.
In mechanical design, we know that different assembly relationships can produce different effects. With the help of computer, different assembly relationships can be demonstrated. If the assembly relationship does not meet the relevant requirements, then the finder can display it, which is convenient for us to modify the wrong part. In addition, the use of computer-aided design can also improve the design quality. There are many advanced technologies in computer-aided design, which make the design more perfect and greatly improve the design quality.
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