<![CDATA[To enable the designers to design and modify model of nuclear channel head quickly and easily, we constructed the CAD system of the nuclear channel head. At first, we analyzed the geometric characteristics of nuclear channel, established of feature control parameter set and the parametric model of nuclear channel head. Secondly, other parameters related to the solid modeling are described through the parameter control set. Thus, the feature solid modeling of head shell surface, nozzle and boss are programmed. Finally, it is proved that the method and development strategy of parametric CAD system is effective by using automatic design example of nuclear channel head which is developed through CAD system of nuclear channel head. DOI: http://dx.doi.org/10.11591/telkomnika.v10i8.1689]]>
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