Research On Design Method Of Giant Magnetostrictive Smart Compoment For Precision Boring Of Non-circular Hole And Relevant Software Development

Piston is one of the most important parts of engine, it’s performance affects the life of engine directly. According to the result of experiment, Adopting piston with non-circular piston hole can effectively decrease the risk of stress concentration and greatly enhance the piston’s performance. Since the disadvantages exposed by the traditional non-circular piston hole manufacturing methods, we put forward a Giant Magnetostrictive Smart Component which is used for the non-circular piston hole manufacturing.Giant Magnetostrictive Smart Component is a new type of energy conversion device among electrical, magnetic and mechanical energy which is based on Giant Magnetostrictive Material(GMM).For the smart component’s merits of high precision, fast response, large output displacement,it is now widely utilized in some ultra-precision machining tools, ultra-precision position control, sensors, vibration control, etc.First of all, the main future and development of the non-circular piston hole manufacturing methods and Giant Magnetostrictive Smart Component at home and abroad were reviewed. Furthermore, the problems existing in the update application are proposed. At the end of this chapter, the significance and influence of the project were addressed. Then the paper presented the principle that the Giant Magnetostrictive Smart Component used to machining the non-circular piston hole and did some function requirement analysis. The mechanical properties of intelligent boring bar and the excitation properties of coils are analyzed based on the current embedded GMM micro-feed mechanism. Finally the overall structure scheme of the Giant Magnetostrictive Smart Component was established.The third chapter finished some structure optimization of the intelligent boring bar which was established in the second chapter.The bolling bar was designed in static structural environment and verified in dynamic environment, using the software of Ansys workbench.The fourth chapter optimized the parameters of the excitation coils and verified its properties through various measures, which confirmed that excitation coils met the design requirements.At the end of the paper, summarized the design flow and measures of intelligent bolling bar and excitation coils. Based on the design flow and measures, a software which can finish some multi-objective optimization was developed to assist the design process of the Giant Magnetostrictive SmartComponent.