With the rapid development of computer technology, CAD technology is no longer a strange concept for enterprises. Many large and small enterprises have already established CAD technology systems, and have more or less developed and applied CAD technology. Secondary application development work. However, how to build a perfect CAD technology system and give full play to the role of CAD technology in practical work has always plagued most companies. Due to the rapid development of computer technology, if once the company has invested in this and can not play its role as soon as possible, this will bring unnecessary losses to the enterprise, but also for the next application of CAD technology development Obstacles are created, so when adopting CAD technology, the following issues should be noted.
First, the establishment of a CAD system CAD concept CAD in the early English acronym Computer Aided Drafting (computer-aided drawing) abbreviation, with the development of computer hardware and software technology, people gradually realized that the use of computer graphics can not be called a computer Auxiliary design; The true design is the design of the entire product, which includes product conception, functional design, structural analysis, and manufacturing. Two-dimensional engineering drawing design is only a small part of the product design; so the abbreviation of CAD was also changed from Computer Aided Drafting to Computer Aided Design. CAD is no longer just an auxiliary drawing, but the auxiliary design of the entire product.
2. Design Method The traditional design method is to engineer three-dimensional products in the brain, and then through the geometric projection of the brain, and finally reflected on the two-dimensional engineering drawings; in the entire design process, engineers have a workload of most of the three-dimensional The mutual conversion and tedious lookups and calculations of entities and 2D drawings.
The manufacturing workers also need to reflect the two-dimensional drawings in the brain to reflect the three-dimensional solids and then process them. The entire process can be expressed as:
3D Conceptual Design for Engineers' Manual Workers to Read Graphs - 2D Drawing Design - Also 2D Drawings for 3D Solids - Manufacturing Due to the limitations of design tools and methods, it is difficult for designers to design complex and accurate products. New product development is slow, and development of complex products is extremely difficult. The use of modern CAD technology will change people's traditional design methods and processes.
The engineer directly operates the computer and uses CAD software to perform part design and assembly of the product on the computer; the production process of the product is almost no different from the real product manufacturing. The product on the computer screen is the product that will be manufactured in the future (of course, the existing equipment and Process can be manufactured). And in the design process, the use of CAD technology to complete the engineer's manual difficult to complete and inefficient work, such as interference inspection after product parts assembly, parts of the irrational structure inspection, movement simulation of the mechanism, the physical properties of parts and assemblies calculated (center-of-gravity position, weight, moment of inertia, etc.) and discover problems that may arise during the actual assembly process. The entire process can be described as: (to be continued)