Research And Development On 3D Parameterization CAD System Of Automobile Synchronizer Based-On Feature

The wide application of CAD technology which improves the products andproject engineering level, lowers consumption, and shortens products developmentcircle effectively, becomes the important means to improve labor productivity andproduct quality by a large margin. The degree of CAD technology application hasbecome an important sign to weigh modernization of science and technology andlevel of modern manufacturing industry in a nation already. For driving themanufacturing informationlization, 863 plan the MIS technique topic has set up thesubject of digital designing and manufacturing system. In the course of digitaldesigning and manufacturing, first is to realize the digital modeling of product andengineering, while 3D is the core of whole MIS for it to become the productinformation's data headstream, thus the research on 3D digitization modelingtechnology has the actual engineering significance.The major content of this paper is summed as follow:1. The accurate modeling of the key part in the automobile synchronizer productsis studied under SolidWorks. Technological difficult points of the three-dimensionalmodel have been studied such as the involute tooth shape, etc. under the environmentof SolidWorks, the accurate modeling of the key part such as combined tooth has beensolved and 3D model database of key parts has been set up.2. To study parameterization modeling technology based on feature. Regardingparameterization thought as guidelines, parameterization modeling method based onfeature has been studied and the automatic generation of 3D model of key parts hasbeen realized. After applying the modeling of products based on feature to thethree-dimensional feature model, the foundation of CAE/CAPP/CAM/PDM has beenestablished.3. To study development of new products based on feature. Have carried oncareful analysis to the different kinds of automobile synchronizer products, the featurestorehouse of designing has been set up and it could support the product design anddevelopment based on feature. A kind of new platform of product design anddevelopment has been offered for enterprise and inheriting and reusing feature ofproduct design is strengthened.4. Further research on key technology of secondary development of SolidWorks.Adopting the thought of object-oriented and making use of the secondary developingtools API and VB, the close integration between application program and SolidWorkswas realized and friendly client interface was developed.5. Supported by above-mentioned theories and key technology, thethree-dimensional parameterization CAD system of automobile synchronizer hasdeveloped. This system has good integration, rapid data transmission and strongpracticability.