|
应用多点调形方法的柔性辗压技术研究
|
|
英文标题：Research on flexible rotary forging using multi-point adjusting method |
|
作者：刘纯国 李明哲 微石 |
|
单位：吉林大学辊锻研究所 |
|
关键词：体积成形 辗压 连续局部成形 数值模拟 |
|
分类号：TG306 |
|
出版年,卷(期):页码：2009,34(5):47-51 |
|
摘要：
|
|
探讨了一种柔性辗压成形工艺,该工艺利用多点调形的思想,用多点支撑的柔性辊代替传统摆动辗压的上部锥形模,由柔性辊来实现坯料上部曲面的辗压加工。通过建立柔性辗压的有限元模型,分析了该工艺的可行性;利用点追踪技术分析了成形过程中的金属流动规律;探讨了加工过程中轴向总载荷及各单元的受力特点;研究了加工过程中出现的缺陷和问题,提出了改进方法。
|
|
A flexible rotary forging process was proposed and studied.Based on multi-point adjusting method,the upper roller in rotary forging was replaced with a flexible roller which was supported by a series of numerical controlled rod.By adjusting the height of each supporting rod,the shape of the flexible roller could be changed accordingly.With the self-rotation of the flexible roller,the workpiece was formed under the compressive force.Using finite element analysis technology,the feasibility of this technique was studied.The metal flow affecting the mechanical properties was analyzed with point tracking technique.The total Z load and load on each supporting rod were calculated.And the forming defects easily occurred during flexible rotary forging were simulated.Two improved techniques were put forward to prevent the defects.
|
|
基金项目：
|
|
吉林省科技发展计划项目(20075005)
|
|
作者简介：
|
|
|
|
参考文献：
|
[1]张猛,胡亚民.摆辗技术[M].北京:机械工业出版社,1998.
[2]卢志国,程培林,华林.摆碾机机身有限元分析[J].锻压装备与制造技术,2007,32(4):32-34.
[3]李明哲,胡志清,蔡中义,等.自由曲面工件的连续高效塑性成形方法[J].吉林大学学报,2007,37(3):489-491.
[4]李明哲,胡志清,蔡中义.自由曲面工件多点连续成形方法[J].机械工程学报,2007,43(12):155-157.
[5]微石.基于多点调形原理的柔性辗压技术研究[D].长春:吉林大学,2008.
[6]Scientific Forming Technology Corporation.DEFORMTM-3DUser s Manual[Z].Columbus,Ohio,USA,2003.
[7]张庆玲,史艳国,孙惠学.锻造铝合金轮毂摆动辗压制坯工序数值模拟技术[J].锻压技术,2008,33(3):64-67.
[8]程培元,胡锐,卢志国,等.直齿圆锥齿轮摆辗成形最大辗压力的有限元研究[J].锻压技术,2008,33(1):50-52.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
