Mechanism of Mandrel on Thickness and Profile of Parts by Shear Spinning
In order to disclose the mechanism of the mandrel on the thickness and profile of shear spun parts,the spinning processes with a mandrel or not were analyzed,and the distribution and variation of strain and stress were also investigated by experiment and finite element method.The results show that the thickness without mandrel is larger than that with mandrel on the whole.From bottom to top of spun part,the thickness with mandrel decreases gradually,while that without mandrel decreases at first and then increases.The linearity of part spun with mandrel is better than that without mandrel,but the tendency of the flange keeping backward and wrinkling of the former is larger than that of the latter.There is little difference in shear strain between parts with mandrel and mandrelless.In the midst and final stage,radial tensile strain and axial compression strain of part spun with mandrel increase sharply,while radial tensile strain without mandrel increases a little.So the wall of part spun with mandrel is thinner than that without mandrel.Its feasible to spin without mandrel for the part with a thicker wall at opening end and no high demand for the linearity,or the linearity of the part can be improved by subsequent spinning.
Shear spinning Thickness Profile Strain and stress Mandrel
Mei ZHAN Yatao QIN Fei CHEN Huabing JIANG Juan WU He YANG
State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xian,710072, China
国际会议
厦门
英文
949-955
2012-01-04（万方平台首次上网日期，不代表论文的发表时间）