CAJ | 학술논문

目的：探索拥有极小圆角的某复杂截面带轮的成形工艺。方法根据零件的结构特点，先后制定了三种成形方案，利用有限元技术对每一方案展开数值模拟分析，最后进行物理实验验证。结果一道次成形时零件中心侧壁易出现破裂缺陷；采用两道次成形时，整形道次零件上的极小内圆角处易出现削料现象。结论采用正反复合拉深→预成形→终整形的三道次成形方案，所得零件成形效果较好，没有出现金属折叠、削料现象。
목적：탐색옹유겁소원각적모복잡절면대륜적성형공예。방법근거령건적결구특점，선후제정료삼충성형방안，이용유한원기술대매일방안전개수치모의분석，최후진행물리실험험증。결과일도차성형시령건중심측벽역출현파렬결함；채용량도차성형시，정형도차령건상적겁소내원각처역출현삭료현상。결론채용정반복합랍심→예성형→종정형적삼도차성형방안，소득령건성형효과교호，몰유출현금속절첩、삭료현상。
ABSTRACT:The aim of this work was to explore the stamping-forging hybrid forming process of complex sectional pulley part with small fillet. According to the structural characteristics of the part, three kinds of forming processes were formula-ted. Numerical simulation analysis was conducted for each process using FEM technology. Finally, the physical experiment was conducted for verification. The center sidewall of the part was prone to having rupture defects with one-step forming. And the small fillet of the part was prone to having cut material phenomena at the shaping pass with two-step forming. U-sing the three-step forming process of positive and negative composite drawing→fillet preforming→final shaping, the pulley part obtained was well formed, and there was no phenomena of metal folding and cutting material.