| In this paper, the primary theory of multimedia CAI was discussed .The plasticinjection technics, injection process, injection equipments and the typical injection mold'sstructure was analyzed .And the structure of multimedia CAI system of typical plasticinjection mold was designed. A set of multimedia software for such course instructionhas been developed.Plastic injection technology, equipment and various typical injection mold structure can be learnt via using this software. Such software system design, the software structure and function programming, the multimedia data creation and integration have been studied. The course contents were arranged according to their knowledge units' characteristics. The user can navigate through various buttons, and hypertext. A friendly interface, which helps the user to learn easily and quickly and deepens his understanding, has been designed. In addition, all the multimedia data has been arranged properly to make this software conform to the cognition patterns of learners. Different methods for multimedia data, such as text, graphics, images, voices, video, animations, and creations have been discussed in this paper and introduced in the software. For example, 3-D model of various typical injection molds was generated directly in Pro/E with its mold base. In addition to the common method of Flash, the animation of mold mechanism was also directly created in 3-D via the Animation and Mechanism modules of Pro/E. It improved the expression of related course contents. The flexible play mode of animation and voice has been designed, which was programmed in Visual Basic6.0, to makes an easier control of study process.This courseware shows the basic contents of typical injection mold structure via different multimedia vividly and exactly then the goal of making abstract to material, invisible to visible has been carried out. |
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