锻压技术

基于DEFORM的一体式盖型螺母冷成形工艺研究及仿真试验

英文标题：Research and simulation test on cold forming process for integral cover nut based on DEFORM

作者：梁天宇

单位：大连职业技术学院

分类号：TH162

出版年,卷(期):页码：2019,44(11):110-115

摘要：

为提高盖形螺母的生产效率，满足批量化的生产需求，研究了一体式盖形螺母冷成形新工艺，以替换原有的组合式焊接盖形螺母成形工艺。以塑性成形理论为基础，采用有限元软件DEFROM-3D，对盖形螺母的成形过程进行了仿真，基于Archard磨损理论，对3种上冲头结构进行了优选，以延长上冲头的使用寿命。然后结合正交试验，设计了上冲头初始硬度、上冲头圆角、上冲头速度、上冲头前角以及摩擦系数的5因素4水平试验表，研究了各试验因素对上冲头磨损的影响;以上冲头磨损量最小为优化目标，获得了盖形螺母成形的最佳参数，并根据最优参数预测了上冲头的使用寿命。最后，进行了实际生产试模，获得的盖形螺母质量良好，对工艺人员的设计工作具有一定的指导作用。

In order to improve the production efficiency of cover nut and meet the batch production demand, a new cold forming process of integral cover nut was studied to replace the original forming process of combined welding cover nut. On the basis of plastic forming theory, the forming process of cover nut was simulated by finite element software DEFROM-3D. Based on Archard wear theory, three kinds of upper punch structures were optimized to prolong the service life of upper punch. Then, combined with orthogonal test, a four-level test table with five factors such as initial hardness, fillet, velocity and front angle of upper punch as well as friction coefficient was designed, and the influences of various test factors on the wear of upper punch were studied. With the minimum wear of upper punch as the objective of optimization, the optimum parameters for the forming of cover nut were obtained, and the service life of upper punch was predicted according to the optimum parameters. Finally, the actual production test was carried out. And the quality of cover nut obtained is good, which has a certain guiding role for the design work of technicians.

基金项目：

梁天宇（1978-），女，硕士，讲师，E-mail：136132213@qq.com

参考文献：

[1]陈立伟,朱春华,王新明, 等.双相钢回弹的有限元模拟及工艺优化[J].热加工工艺,2019,48(1):139-141.
Chen L W,Zhu C H,Wang X M, et al.Finite element simulation and process optimization of dual-phase steel springback[J].Hot Working Technology,2019,48(1):139-141.
[2]孙晓庆, 霍喜伟, 孔令坤, 等. 有限元模拟在H型钢工艺优化中的应用[J]. 河南冶金, 2018, 26(4):37-39.
Sun X Q, Huo X W, Kong L K, et al. Application of FEM simulation in process optimization of H-beam[J]. Henan Metallurgy, 2018, 26(4):37-39.
[3]刘成强, 林连华, 徐海港, 等. 汽车车架有限元分析与工艺优化设计[J]. 热加工工艺, 2017, 46(23):199-200.
Liu C Q, Lin L H, Xu H G, et al. Finite element analysis and process optimization design of automobile frame[J]. Hot Working Technology, 2017, 46 (23):199-200.
[4]张东民, 盛育东, 张金玉, 等. 六角开槽螺母的冷镦工艺优化及数值模拟[J]. 机械设计与制造, 2018, (3): 191-194.
Zhang D M, Sheng Y D, Zhang J Y, et al. Numerical simulation and optimization for cold heading of hexagonal slot nut[J]. Machinery Design & Manufacture, 2018, (3): 191-194.
[5]伍太宾. 盖形螺母冷墩挤成形工艺[J]. 现代制造工程, 1996, (1):25-26.
Wu T B. Cold pier extrusion process for cap nuts[J]. Modern Manufacturing Engineering, 1996, (1):25-26.
[6]朱晟平,莫帅,王霄.基于Deform与Isight的六角法兰面螺栓冷镦模具设计与优化[J].机械设计,2019,36(3):50-55.
Zhu S P,Mo S,Wang X.Design and optimization of the cold-heading die for hexagonal flange bolts based on Deform and Isight[J].Journal of Machine Design,2019,36(3):50-55.
[7]骆静,尹小燕,李荣章, 等.花键轴冷挤压工艺研究与模具设计[J].模具技术,2019，(4):12-15，63.
Luo J,Yin X Y,Li R Z, et al.Cold extrusion process and die design of a spline shaft[J].Die and Mould Technology,2019，(4):12-15，63.
[8]王瑞麒,李永堂.大口径厚壁管热挤压模具磨损[J].机械工程学报,2019,55(10):70-76.
Wang R Q,Li Y T.Wear of hot extrusion die for large diameter thick-walled pipes[J].Journal of Mechanical Engineering,2019,55(10):70-76.
[9]范建祥, 程道来, 倪伟豪. 基于正交试验汽车六角螺母冷挤压模具磨损规律分析及优化[J]. 铸造技术, 2018, 39(4): 929-932.
Fan J X, Chen D L,Ni W H. Process analysis and optimization on die wear in cold extrusion for vehicle hex nut[J]. Foundry Technology, 2018, 39(4): 929-932.
[10]褚忠, 瞿伟, 刘铭心, 等. 冷挤压模具磨损优化设计[J]. 铸造技术, 2017, 38(12): 2895-2899.
Chu Z,Qu W,Liu M X, et al.Optimum design of cold extrusion die wear[J]. Foundry Technology, 2017, 38(12): 2895-2899.
[11]孙宪萍,刘强强,杨兵, 等. 基于磨损正交试验的温挤压模具优化设计[J]. 润滑与密封,2016,41(6):73-76,92.
Sun X P, Liu Q Q, Yang B, et al. Optimization design on warm extrusion die based on orthogonal experiments of wear[J]. Lubrication Engineering, 2016, 41(6):73-76,92.
[12]张剑寒, 方刚. 基于有限元模拟和正交实验方法的轴承钢球冷镦工艺及模具优化[J]. 塑性工程学报, 2009, 16(3):211-217.
Zhang J H, Fang G. Optimization for cold heading process and die design of bearing steel ball by finite element simulation and orthogonal test method[J]. Journal of Plasticity Engineering, 2009, 16(3):211-217.

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