三维非轴对称偏心类管件旋压成形时的变形力分析  

ANALYSIS ON THE SPINNING FORCES FOR 3D NON-AXISYMMETRICAL THIN-WALLED OFFSET TUBES

作　　者：夏琴香[1] 张赛军[1] 梁佰祥[1] 任晓龙[1] 阮锋[1] 

机构地区：[1]华南理工大学机械工程学院,广州510640

出　　处：《机械工程学报》2005年第10期200-204,共5页Journal of Mechanical Engineering

基　　金：国家自然科学基金(50275054)广东省自然科学基金(020923)广东省工业科技攻关计划(2003C102013)华南理工大学高水平建设苗子(73056060)资助项目。

摘　　要：采用主应力法建立了三维非轴对称偏心类薄壁管件旋压成形时的变形力的理论计算公式,并对旋轮公转角度γ、道次偏移量δ等成形工艺参数对旋压力变化的影响进行了理论分析。结果表明,在偏心类管件旋压过程中,旋压力随旋轮公转角度γ作周期性变化,其变化的幅度取决于道次偏移量δ的大小。对工件道次偏移量δ、旋轮进给比f和名义压下量Δ等主要成形工艺参数对最大旋压力的影响进行了理论分析和试验研究,理论计算结果与试验结果吻合较好。The theoretical calculation formulas of the spinning forces for the 3D non-axisymmetrical thin-waUed offset tubes based on the slab method are presented. The effects of the circumferential rotational angle γ of the roller, the offset value δ of the blank per path on the changes of the spinning forces are analyzed theoretically. It shows that during the offset tubes spinning, the spinning forces vary periodically along with γ, and the extent of the variation depends on the value of δ The effects of the main processing parameters, such as the offset value δ of the blank per path, the feed ratefof the roller, and the nominal reduction Δ of the blank radius per path, on the spinning forces are analyzed experimentally and theoretically. The calculation results conform well to the experimental ones.

关 键 词：偏心类管件 旋压 主应力法 变形力 

分 类 号：TG306[金属学及工艺—金属压力加工]