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Plastic mold CAD integration skills introduction

1, plastic mold CAD integration skills
The manufacture of plastic molds includes the design of plastic products, the design and analysis of molds, the numerical control of electromagnetic flowmeter molds (milling, electric machining, wire cutting, etc.), polishing and testing, and rapid prototyping. The CAD unit skills touched by each link are: exterior and structural design (CAD), product shape rapid reverse (RE), structural analysis and optimization design (CAE), auxiliary manufacturing (CAM), machining process fictitious simulation ( SIMULATION), rapid prototyping (RP) of products and molds, assisted process history (CAPP) and product data management techniques (PDM). Plastic mold CAD integration skills, is to integrate the various unit skills touched by the plastic mold manufacturing process, the opposite database and file transfer style, complete information integration and data resource sharing, thereby greatly extending the design and manufacturing cycle of the mold, and improving the quality of the mold .
2. The CAD design and shape of plastic products are reversed
The first step in the design and manufacture of plastic molds is the design of plastic parts. The traditional product design method of electromagnetic flowmeter is that the designer uses the two-dimensional three-dimensional drawing to express the three-dimensional concept of the product. The drawing shows the process and construction method. This method selects the simplicity of the designed graphic and can not indirectly grasp the manufacturing quality. The modern design method is that the designer indirectly establishes the 3D model of the product on the computer, performs the mold structure design and optimization design according to the 3D model of the product, and then designs the 3D model according to the mold structure for programming and programming. This method makes product model design, mold structure design, machining programming and process design all based on 3D data, and completes data sharing. It not only improves the design efficiency, but also guarantees quality and reduces the cost.
There are three types of computer plastic product models: Application of CAD system software for product model design, application of physical measurements for rapid reverse modeling, application of other CAD system specifications. Aiming at the methods of these three product models, various techniques have been developed to improve the design effectiveness and quality of product models. Further analysis of the extension and characteristics of various techniques.
Application of CAD system software for product model design, its skills include 2D geometry drawing, 2D parametric graphic design of electromagnetic flowmeter, 3D solid shape design, 3D feature design, 3D parametric solid design 3D surface design, space design, product appearance rendering, product static advertising design, etc. These softwares are represented by many paradigms. The two-dimensional software includes: ME10, CADKEY, AUTOCAD, DHCAD, Genis, Sigraph, etc.; 3D software includes: UGII, PRO/E, IDEAS, CATIA, EUCLID, etc.; The software for product appearance and advertising design includes: Alias, CDRS, etc. . The drawing of 2D geometry is to use the CAD software to draw the part graphics, that is, to replace the manual drawing with the computer; and the 2D parameterization, that is, the computer completes the graphic variable design, making the correction more inconvenient; The 3D exterior design is digital The product's real shape design, it completely clarifies the product, can further supply the necessary mathematical model for mold design, analysis and processing; space free design is the artistic design of the product shape, so that the product is not only a functional product, but also a work of art. The appearance of the product is the result of the product design, making the product more elegant and more colorful to meet the various needs of the people; the static advertising design of the product is to indirectly create the advertising and market promotion.
The application of physical measurement for rapid reverse modeling is one of the hot topics of current research. It is an important skill for product profiling to basically carry out product modification design. The basic principle is to scan and measure the physical object through a three-coordinate measuring machine, a laser measuring machine or an electronic measuring instrument, and send the digitized small data points obtained by the measurement into the reverse module of the higher CAD software or the special reverse software. In the reverse, the software can indirectly read the point data group, and can edit, filter, rectify, refine, sort, partially correct and reorganize the point data group, and then actively generate the surface, and finally obtain the same or the same with the real object. Innovative computer plastic product model. This approach can greatly improve the rate of new product design. At present, the more mature surface reverse modeling software includes: Surfacer, Cimatronrenge, Strim100 and so on.
It is inconvenient to apply the standard style files of other CAD systems to model. Electromagnetic flowmeters Because of the market's smashing and INTERNET network skills, there are many CAD tool exchanges and collaborations in mold companies. Because of the variety of CAD systems, the style of the document must comply with domestic regulations, such as DXF, IGES, STEP, VDA, STL, etc. Indirectly establish or modify the product model by reading the specification style file, which can slow down and deepen the exchange between the user and the mold manufacturer, and extend the product design cycle.

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