1. for urban planning
The future shape of the city for the preview, the disappearance of the city can be re-simulated, and according to the results of the planning at any time to modify, so as to obtain the scientific basis for the adjustment of the urban planning program, so that the urban planning more forward-looking.
2. For tourism
Modeling technology can not only show the city's existing landscapes, but also can reproduce the non-existent and the attractions in the planning and construction, so that the city to play a role in publicity, help to expand the influence of the city, attract investment and tourists.
3. For urban management
3D modeling technology can complete the dynamic simulation of urban disaster events and emergencies, and realize the visual query of all kinds of information in the city to provide decision-making for the management and service of *** the city.
4. For the study of dynamic changes in the urban environment
The use of three-dimensional technology can be a large number of statistical data can be converted into an easy-to-understand image, the performance of human activities on the environment to exert pressure on the prediction of different human activities under the conditions of the environmental effects.
From: "three-dimensional city modeling in the construction of digital city application" Cao Lei traffic science and economy April 2014, Volume 16, Issue 2
Note: This article for Chengdu deduction Dongdao Technology Co., Ltd. for internal learning, reproduced, please mark the source of the article
In the mechanical design, the significance of the drawing of three-dimensional diagrams What is the role.
Benefits: first look intuitive ah, design some complex parts and components do not have to express several views.
Then, after the assembly of parts, you can check whether the parts meet the size. And whether interference.
Third, the software has a powerful function, such as calculating the volume, weight, force analysis and so on, these are two-dimensional software can not be compared.
The purpose and significance of mechanical 3D modeling training
With the development of computer hardware and CAD software, the traditional plan design mode is being replaced by a new model. The traditional two-dimensional drawings bear the role of the product from the design to the finished product of the whole process of the standard, but as we all know, especially when the product structure is more complex, two-dimensional drawings in many cases can not be fully described clearly, and even sometimes there are differences in understanding, so that in the transfer of the product process, the final product may be different from the design.
The 3D modeling approach is to design a 3D model as the standard for the entire product process, which ensures that the final product matches the original design intent, but of course, the entire process of 2D drawings is also essential.
Therefore, 3D modeling is being more and more widely used in the mechanical industry, and is also the direction of development.
What is the use of 3D modeling
Personally, I understand that it is more intuitive, more visual, and easier to be understood.
Wouldn't it be nice to see the results before the project is completed? Where there are imperfections that need to be modified, they can be solved before the official construction, making the design more perfect.
For machine manufacturing, it is the same reason, computer-aided manufacturing.
The purpose and significance of the application of three-dimensional animation model in the production of game scenes 10 points
Only provide ideas:
How to play without animation model game, only play scenes? Haven't seen such a game yet.
bim purpose What is BIM and what is its specific role
Building Information Modeling (Building Information Modeling) is to take the various information data related to the construction project as the basis of the model, the establishment of the building model, through digital information simulation to simulate the real information that the building has. It has five major features: visualization, coordination, simulation, optimization, and drawability. The establishment of project management informatization with BIM application as the carrier enhances project productivity, improves building quality, shortens construction period and reduces construction cost. Three-dimensional rendering, publicity and display Three-dimensional rendering animation, giving people a sense of reality and direct visual impact. The built BIM model can be used as the model base for secondary rendering development, which greatly improves the accuracy and efficiency of 3D rendering effect, gives owners a more intuitive publicity introduction, and improves the chance of winning the bid. eabim Fast Quantity Calculation, Accuracy Improvement The creation of BIM database can accurately and quickly calculate the project quantity and improve the accuracy and efficiency of construction budget through the establishment of 5D associated database. As the data granularity of the BIM database reaches the component level, it can quickly provide the data information needed to support the management of each line of the project, effectively improving the efficiency of construction management.
What is 3D fine modeling
1, first of all, the fineness of the modeling. Good effect in the initial modeling time in accordance with the details of the object in the computer modeling to generate, and give the appropriate mapping. This realism is naturally quite high, which is even more important when it comes to product rendering. However, this also increases the number of facets in the scene, so the rendering time is significantly longer. In the performance of more distant objects, you can use a moderate amount of mapping instead of detail. But closer to the object must be modeling refinement, in order to make the three-dimensional rendering realistic and wonderful.
2, followed by material mapping. The so-called mapping is the object is what kind of material, is the wood grain floor, or brushed stainless steel, and so on. Mapping not only shows the color, but also to reflect the real texture of the object gloss. So in the process of making good renderings (especially photo renderings), you need to spend a considerable amount of time on the material to constantly adjust. Sometimes you need to take photos of the corresponding material, and constantly adjust its gloss, texture bump, in order to achieve satisfactory results.
3, lighting arrangement. At present, three-dimensional effect drawings generally use light energy transfer (simulation of real light reflection and attenuation) of the way out of the map. Simulation of sunlight to light enough but not excessive; simulation of light to achieve a soft sense of hierarchy, at the same time to the attenuation of light for appropriate control, usually these need some experience. In the three-dimensional rendering design need to constantly render the scene, and constantly adjust the lighting, so that the last can draw a very real sense of the effect of the map, to show the purpose of the effect.
To see the good and bad of a rendering is to observe 1) whether the modeling is in place, and whether the details are fine; 2) whether the material is close to the real material; and 3) whether the lighting is natural, so that the scene is full of layers and a sense of space.
Application of 3D animation
With the continuous development of computer three-dimensional image technology, three-dimensional graphic technology is more and more important to people. Three-dimensional animation because it is more intuitive than the plan, more to the viewer to the immersive feeling, especially for those who have not yet realized or ready to implement the project, so that the viewer in advance to appreciate the implementation of the wonderful results. Three-dimensional animation, from simple geometric models such as general product display, art display, to complex character models; three-dimensional animation from static, a single model display, to dynamic, complex scenes such as real estate hotel three-dimensional animation, three-dimensional roaming, three-dimensional virtual city, role animation. All this, animation can rely on strong technical strength for you to realize. First, the architectural field at this stage in China, 3D technology in the field of construction has been the most widely used: early architectural animation because of 3D technical limitations and creative production of a single, the production of architectural animation is a simple running camera building animation. With the enhancement of 3D technology and the diversification of creative methods, architectural animation from the script creation to the fine modeling, late film editing techniques, and original music sound effects, emotional expression methods, the production of architectural animation comprehensive level is getting higher and higher, the cost of architectural animation is also much lower than before. Second, the planning field of roads, bridges, tunnels, overpasses, street scenes, night scenes, attractions, municipal planning, urban planning, urban image display, digital city, virtual city, urban digital engineering, park planning, venue construction, airports, stations, parks, squares, kiosks, post offices, banks, hospitals, digital campus construction, schools and other animation production. Third, animation production of three-dimensional animation from simple geometry model to complex character models, individual model display, to complex scenes such as roads, bridges, tunnels, municipal, community and other linear engineering and site engineering landscape design performance. Fourth, the garden field garden landscape animation involves scenic publicity, tourist attraction development, topography and geomorphology performance, national parks, forest parks, natural cultural heritage protection, historical and cultural heritage records, park landscape planning, venues greening, community greening, building landscape and other animation performance production. Landscape 3D animation is the garden planning and construction program, with 3D animation performance of a program presentation. Its effect is real, three-dimensional, vivid, is incomparable to the traditional effect map. Landscape animation will be the traditional planning program, from the paper or sand table on the evolution of the computer, the real restore a virtual garden landscape. Animation in three-dimensional technology to produce a large number of plant models have certain technical breakthroughs and production methods, making the plants produced with 3D software more realistic and vivid, animation in the plant species has also accumulated a large amount of data, so that the landscape plant animation like a tiger. Fifth, the main role of the product demonstration three-dimensional animation is used to simulate, through the animation of the way to show want to achieve the desired effect. For example, in the construction of digital city, in various fields of application is different, then how to image to the visitors to introduce the results of the digital city? Then you need to make a three-dimensional animation, through the form of animation to restore the reality of the situation, so that visitors more intuitive understanding of the application of this technology. Product animation involves: industrial products such as automobile animation, aircraft animation, ship animation, train animation, ship animation, spaceship animation; electronic products such as cell phone animation, medical equipment animation, monitoring instrumentation animation, security and anti-theft equipment animation; mechanical product animation such as mechanical parts animation, oilfield mining equipment animation, drilling equipment animation, engine animation; product production process animation such as product production flow, Production process animation such as product production flow, production process and other three-dimensional animation production. Sixth, simulation animation simulation animation production, through the animation simulation of all processes such as production process, traffic safety demonstration animation (simulation of traffic accidents), coal mine production safety demonstration animation (simulation of coal mine accident process), energy conversion and utilization of the process, the process of water treatment, the process of water conservancy production and transportation, power production and transportation, mineral and metal smelting process, chemical reaction process, plant growth process, the construction process and other demonstration animation production. Process demonstration animation production. Seven, the title animation title animation creative production, such as promotional film title animation, game title animation, TV title animation, movie title animation, program title animation, product demonstration title animation, advertising title animation. Eight, advertising animation animation advertising is a common way of expression of advertising, animation advertising in some of the picture is pure animation, there are live action and animation combined. In the performance of some of the live action can not be completed when the picture effect, we must use the animation to complete or a combination of both. Such as advertisements with some dynamic effects is the use of 3D animation to complete the ads we see, from the point of view of the production, almost all more or less to the use of animation. Committed to three-dimensional digital technology ......
Come to the point of mechanical manufacturing processing and design of the subject background, purpose and significance 。。。。
1, the research significance of this topic, the current status of research at home and abroad, the level and development trend
CA6140 lathe rear bracket machining process and jig design for the study of this topic, the study of a large amount of information, first of all, to understand the machining process is to use cutting methods to change the shape of the blank, the size and the physical and mechanical properties of the material to become a machine with a certain accuracy, roughness and so on. Need a certain degree of precision, roughness and other parts.
In order to be able to specify the exact process, so that the workpiece can be processed in accordance with the technical requirements of the parts drawings, it is necessary to develop a complex machining process regulations as a guiding technical documents for production, learning to study the development of the significance of the machining process regulations and the role of the research is the purpose of this topic.
Throughout the design process, we will learn more knowledge.
(1) We must carefully understand the structure of the parts, carefully analyze the parts drawings, cultivate our independent literacy, enhance our knowledge and understanding of the parts drawings, through the drawing of the parts drawings, not only to enhance our ability to draw and the ability to use autoCAD software.
(2) the development of process procedures, determine the machining allowance, process size calculation, working time quota calculation, positioning error analysis. In the whole design is also very important, through these designs, not only let us more comprehensive understanding of the machining process of parts, machining size determination, and let us know the process route and machining allowance determination, must be compatible with the actual factory machine tools. This is a review of the knowledge previously learned, but also the future work of a pavement.
(3) in this design process, we must also consider the workpiece mounting and clamping. Installation of the correct or not directly affect the accuracy of the workpiece processing, installation is convenient and rapid, and will affect the length of the auxiliary time, thus affecting productivity, fixtures are processing the workpiece, in order to complete a certain process, used to correctly and quickly install the workpiece device. It is to ensure machining accuracy, improve productivity and reduce the amount of labor has a great role. This is the focus of the whole design, but also a difficult point
In recent years, the mechanical manufacturing process has rapid development. For example, the application of artificial intelligence to select parts of the process protocol. Because the microphysical process of special processing is very complex, often involving electromagnetic fields, thermodynamics, fluid dynamics, electrochemistry and many other fields, the theoretical study of its processing mechanism is extremely difficult, it is usually difficult to express with a simple analytical formula. In recent years, although scholars from various countries have used a variety of theories to conduct in-depth research on different special machining technology, and has made outstanding theoretical achievements, but there is still a certain distance from the quantitative practical applications. However, the machining accuracy and surface quality obtained by each special machining method has its own rules with the parameters of machining conditions. Therefore, at present, the experimental statistical method of studying the mechanism of traditional cutting machining is often used to understand the process law of special machining for practical application, but it lacks systematic. Due to its limitations, the process parameters of special machining can only be selected empirically, and it is difficult to achieve optimization and automation, for example, the immersed machining process of EDM electrodes, which is widely used in the non-CNC EDM machine tools and larger-size mold cavities that account for more than 95% of the total number of EDM machines. Although scholars have carried out some research on the principles of CAD, CAPP and CAM, and achieved some results, but due to the lack of process data, there is still no mature commercialized CAD/CAM system. Usually, we can only use manual methods or partly use CAD modeling, partly generate 3D profile data of complex electrodes. With the mature development of various artificial intelligence technologies such as fuzzy mathematics, neuronal networks and expert systems, people have started to try to use this technology to establish quantitative accuracy, efficiency, economy and other experimental models between machining effect and machining conditions, and have obtained preliminary results. Therefore, the conditions are ripe for the establishment of a scalable open system that describes the laws of special machining processes by storing typical machining examples and machining experience as knowledge through experimental modeling. And for the further development of special machining processing process computer simulation, the application of artificial intelligence to select the parts of the process regulations and virtual machining to lay the foundation.
At the same time, in the machining process, the fixture occupies a very important position, which reliably ensures the workpiece machining accuracy, improves machining efficiency, reduces the labor intensity, the design process of the fixture should be in-depth production of the actual, (on the workpiece drawings, process documents, production programs, etc., analysis), careful investigation and research, to learn from the domestic and foreign advanced technology, to formulate a reasonable design plan.
We have been working on the design of the machine for a long time.
We all know that reducing downtime is an important factor in improving productivity and maximizing the utilization factor of production capacity. ......
Briefly study mechanical drawing and three-dimensional modeling of the understanding
Through the mechanical drawing training of a few case analysis, explains the clever, methodical use of AutoCAD's three-dimensional modeling capabilities, not only to enhance the intuitive and interesting mechanical drawing course training, but also allows the majority of students from the "map" to "object". to "things", from "things" to "map" thinking conversion process has become smoother, learning efficiency significantly improved. In addition, the students initially see the computer three-dimensional solid modeling technology, but also for the study of subsequent courses laid the foundation. Practice shows that the clever use of Auto-CAD three-dimensional modeling function is a successful initiative in the mechanical drawing training activities.