| The computer Aided Design (CAD) system for internal combustion engine crankshaft is studied in this paper, and the model of CAD system and main structure of engine crankshaft are finished based on this idea.The system is based on the engineering database and construct DBMS (database manage system) by means of GUI language Visual C++, which can finish the data exchange , criterion and the searches of information under the standard of Microsoft ODBC; And the system adopt the regular and mechanical methods as the basic approach of calculation and analysis ;And the model of drawing export is viable through the modeling tool AutoCAD. As a whole, this system is a synthetical ICE Crankshaft Computer Adied Design system which syncretize the advanced design methods of crankshaft.In this CAD system, general fatigue strength calculation and torque-vibration analysis are conducted in detail, and the finial drawing of crankshaft is exported through the method of parametric design in the environment of AutoCAD. This software is made up under MS-Windows operating system with some programming languages, including Visual C++, Microsoft Access, AutoCAD for windows and its programming interface ObjectARX. The system can be divided into five parts: structure design, fatigue strength calculation and torque-vibration analysis, report export, drawing export and help system. |
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