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T形管冷弯成形仿真与轧辊孔形优化
英文标题:Simulation on T-tube cold forming and optimization on the shape of roll hole
作者:孙庆东 葛亮 陈晨 赵荣国 
单位:扬州市职业大学 江苏帝尔保机械有限公司 
关键词:T形管 冷弯成形 ABAQUS 有限元仿真 轧辊孔形 
分类号:TG316.1+4
出版年,卷(期):页码:2018,43(9):83-87
摘要:
根据T形管冷弯成形的轧辊配辊方案和成形机组参数,在ABAQUS中建立了符合实际工况的管坯和轧辊模型,并采用显式算法对成形过程进行了全流程仿真。通过对仿真结果中局部成形面的分析和侧面“倾斜”区域的中点在X方向位移数值的对比,发现管坯在进入第6道次后,轧辊成形表面未与管坯圆弧面压实,在后续变形过程中没有得到修正。在此基础上对轧辊的孔形进行优化,同时将尖角改为圆角。对优化后的配辊方案进行了模拟仿真和生产验证。结果表明:有限元仿真可以预测T形管在成形过程中的缺陷,并能对轧辊孔形设计提供有益的参考。
According to the roll-arranging scheme and the forming unit parameters of T-tube cold forming, the model of tube blank and roll during actual conditions were set up by software ABAQUS, and the whole rolling process was simulated by explicit algorithm. Through the analysis of local forming surface and contrast of the numerical displacement of middle point in the side of the inclination region along X direction in simulation results, it is found that the forming surface of the tube blank after entering the sixth pass is not compacted with the circular arc surface of tube blank, and this situation is not corrected during the subsequent deformation process. Based on the above situation, the shape of roll hole was optimized with changing the sharp corner into rounded corner, and the optimized roll-arranging scheme was simulated and verified. The results show that the finite element simulation can predict defects in the rolling process of T-tube and provide beneficial reference for designing the shape of roll hole.
基金项目:
江苏省高校品牌专业建设支撑项目(PPZY2015 C234);模具设计与制造品牌专业建设(ZDPPZY08)
作者简介:
孙庆东(1979-),男,硕士,讲师 E-mail:23478954@qq.com
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