Development Of 3D Parametric Valve Design System

Following the development trend of valve CAD,according to the requirements of the Chengdu ChengFeng Valve Limited Company and based on MDT,this article develops the 3D parametric valve design system. The main work and achievements are as follows:Based on the 2D engineering drawing of the several different valves the company provided,the 3D parametric basic drawing-base is set up using MDT which is a 3D design platform,including all the parts drawings and the general assemblage drawings of the valve models;In accordance with the common steps of the valve design,the parameter editors are designed to edit,import and export the valve parameters and are provided with the function of double synchronization on parameters displaying for convenience in use;In order to meet demands of users and make the design more accurate,reliable and practical,the assistant formula calculators are developed,which can automatically do all types of structure calculation in the procedure of valve design,and export the calculation manual of valve design;In order to make designers more rivalries,taking full advantage of InternetMntranet technology, the virtual design center is developed,which integrate netmeeting,terminal service and super links,so that the designer can directly use applications on remote server,communicate with other designers on Intranet/Internet,share software resources and realize long-distance cooperative design.Using the system developed,we have set up the basic drawing-base of four different valves such as resilient seated gate valve,the wedge flat gate valve and the three-eccentricity butterfly valve etc. So these four type valves can be rapidly designed. It is shown that this system realizes the valve quickly modeling,consumedly increases the valve design efficiency,and has stronger extensibility.