小型薄壁套管多工位冷镦挤工艺
发布时间：2019-03-12 10:53
【摘要】：小型薄壁套管类零件,整体尺寸较小且内外结构复杂,加工方法的选择和成形工艺设计方面是生产该类零件的重点和难点。针对上述难点,采用适合中小型零件批量加工的多工位冷成形加工方法,并根据成形理论分析,初步设计出两种较合理的六工位冷成形方案,对成形过程采用Deform-3D软件数值模拟。得出先反挤压成形薄壁端的最大载荷为5.6×104N,远小于先镦粗成形凸缘的最大载荷;台阶深孔的成形采用杯-杯复合挤压,其损伤值远小于材料的临界损伤值。最终通过生产试验验证模拟结果的最佳工艺,且成形后小型薄壁套管的内部组织分布合理,无冷镦缺陷。
[Abstract]:Small thin-walled casing parts have small overall size and complex internal and external structures. The selection of machining methods and forming process design are the key and difficult points in the production of these parts. In view of the difficulties mentioned above, the multi-station cold forming method suitable for batch machining of small and medium-sized parts is adopted, and according to the analysis of forming theory, two reasonable six-station cold forming schemes are preliminarily designed. The forming process is simulated by Deform-3D software. It is concluded that the maximum load of thin-wall end is 5.6 脳 104N, which is much less than the maximum load of pre-upsetting flange, and the damage value of step deep hole is much smaller than the critical damage value of material when cup-cup compound extrusion is used in the forming of deep hole. Finally, the optimum process of simulation results is verified by production test, and the internal structure distribution of small thin-walled casing after forming is reasonable, and there is no cold upsetting defect.
【作者单位】： 郑州轻工业学院机电工程学院;中石化中原石油工程有限公司钻井三公司;郑州机械研究所;
【基金】：“高档数控机床与基础制造装备”国家重大科技专项(2013ZX04002081) 郑州轻工业学院博士基金资助项目(2015BSJJ090)
【分类号】：TG306
[Abstract]:Small thin-walled casing parts have small overall size and complex internal and external structures. The selection of machining methods and forming process design are the key and difficult points in the production of these parts. In view of the difficulties mentioned above, the multi-station cold forming method suitable for batch machining of small and medium-sized parts is adopted, and according to the analysis of forming theory, two reasonable six-station cold forming schemes are preliminarily designed. The forming process is simulated by Deform-3D software. It is concluded that the maximum load of thin-wall end is 5.6 脳 104N, which is much less than the maximum load of pre-upsetting flange, and the damage value of step deep hole is much smaller than the critical damage value of material when cup-cup compound extrusion is used in the forming of deep hole. Finally, the optimum process of simulation results is verified by production test, and the internal structure distribution of small thin-walled casing after forming is reasonable, and there is no cold upsetting defect.
【作者单位】： 郑州轻工业学院机电工程学院;中石化中原石油工程有限公司钻井三公司;郑州机械研究所;
【基金】：“高档数控机床与基础制造装备”国家重大科技专项(2013ZX04002081) 郑州轻工业学院博士基金资助项目(2015BSJJ090)
【分类号】：TG306
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