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Abstract：
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The in step power spinning device is applied to form a double angle tapered wall cone which has a deviation from sine law with power spinning. The paper presents a method which a square plate is shaped to a double angle tapered wall cone with power spinning twice. The design models of blank of tapered wall thickness cone and equal wall thickness cone with deviation from sine law are presented.
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Reference：
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1 Simon J. Spin Compensation of Shaped Charge L iners Manuf-actured by the Rotary Extrusion Process. AD-3 0 5555,1 958.
2 Gainer M K.A Study of Metallurgical Effects in High VelocityDeform ation of Copper Using Rotary Extruded L iners. BRL -1 1 67,1 962 .
3 L eifeld. Basic Principles and Applications of Metal Spinning、Shear and Flow Forming. Technical Bulletin,1 971 ( 8) :2 0～ 2 8
4 王成和 ,刘克璋等 .旋压技术 .北京 :机械工业出版社 ,1 986.
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