锻压技术

多规格椭球瓜瓣充液拉深成形回弹控制

英文标题：Springback control on hydroforming for various specifications ellipsoidal scalloped segment

分类号：TG394

出版年,卷(期):页码：2019,44(8):55-60

摘要：

以多种规格椭球瓜瓣为研究对象，运用Dynaform软件，模拟充液拉深成形工艺过程，基于得到的自由状态回弹量计算结果，研究依靠增大压边力、增加拉延筋的工艺方法，初步实现回弹控制，模拟结果显示回弹减至4.87 mm以内。针对型面方程一致的特点，研究1套模面补偿兼容全部规格椭球瓜瓣的回弹控制，对模具型面进行了二次回弹补偿优化，并根据实际回弹数据最终完成实际型面补偿。通过现场试验获得了型面精度满足设计要求的所有合格产品，全部回弹量有效地控制在1 mm以内。结果表明，采用工艺参数控制和兼容性的型面补偿实现了1套模具成形多规格瓜瓣的回弹控制，验证了仿真过程的有效性和实用性，减少了试模费用和开发周期。

For the ellipsoid scalloped segment of various specifications, the process of hydroforming was simulated by software Dynaform. Based on the calculation results of springback obtained by free state, the springback control was realized initially by increasing the blank holding force and the drawing bead. The simulation result shows that the springback is reduced to less than 4.87 mm. In view of the consistent characteristic of the profile equation, the springback control of the die surface compensation with all specifications of ellipsoidal scalloped segment was studied, the die surface was optimized for the second springback compensation, and the actual profile compensation was finally completed according to the actual springback data. Furthermore, all qualified products meeting the design requirements of profile accuracy were obtained by tests, and the total amount of springback was effectively controlled within 1 mm. The results show that the springback control of multispecification ellipsoid scalloped segment forming with a set of dies can be realized by process parameter control and compatible profile compensation, which verifies the effectiveness and practicability of the simulation process and reduces the cost of die test and development cycle.

基金项目：

天津市科技计划项目（17YFZCGX00530）

作者简介：田恕（1987-），女，硕士，工程师 Email：tian6shu@163.com

参考文献：

[1]Siegert K，Hussermann M，Lsch B，et al. Recent developments in hydroforming technology[J]. Journal of Materials Processing Technology，2000，98（2）：251-258.

[2]Buerk E. Hydromechanical drawing[J]. Sheet Metal Industries，1967,44（479）：182-188.

[3]Zhang S H，Wang Z R，Xu Y，et al. Recent developments in sheet hydrofoming technology[J]. Journal of Materials Processing Technology，2004，151(1-3): 238-241.

[4]郎利辉，张泉达，孙志莹，等.关键参数对薄壁筒形件充液成形的影响规律[J]. 锻压技术，2017，42（12）：51-60.

Lang L H，Zhang Q D，Sun Z Y，et al．Influence of key process parameters on thin-wall tube workpiece in hydroforming process[J]．Forging ＆ Stamping Technology，2017，42(12): 51-60．

[5]苑世剑. 现代液压成形技术[M]. 北京：国防工业出版社，2009.

Yuan S J. Modern Hydraulic Forming Technology[M]. Beijing: National Defence Industry Press，2009.

[6]郎利辉，王永铭，谢亚苏，等.铝合金盒形件充液成形法兰变形特性及其失稳影响分析[J].材料科学与工艺，2013，21(4): 37-43.

Lang L H，Wang Y M，Xie Y S，et al. The flange deformation characteristics and its effect on failure in the hydroforming process of aluminum alloy rectangular cup[J]. Materials Science and Technology, 2013, 21(4): 37-43.

[7]王云，王峥，李微波，等. 轮罩拉深成形的回弹补偿模拟分析[J].模具技术，2013，4（7）：7-11.

Wang Y，Wang Z，Li W B，et al．Wheel cover deepdrawing springback compensation simulation analysis[J]. Die and Mould Technology，2013，4（7）：7-11.

[8]杨平，周杰，朱若岭，等. 金属板料拉深回弹成因及回弹补偿研究[J].机械设计与制造，2009，9（9）：134-136.

Yang P，Zhou J，Zhu R L，et al．A study on the cause and compensation of sheet metal spring back during drawing process[J]. Machinery Design ＆ Manufacture，2009，9（9）：134-136.

[9]胡心平，苏合新，王言德.基于DYNAFORM的汽车前防撞梁支撑板的拉延模具设计[J]. 锻压技术，2017，42(9):118-122.

Hu X P，Su H X，Wang Y D. Design on drawing die of automotive front anticollision beam support plate based on DYNAFORM[J]. Forging ＆ Stamping Technology，2017，42(9):118-122.

[10]郑光文，李军平，白凤梅，等.卡车纵梁冲压成形回弹控制研究[J]. 模具工业，2009，35（1）：28-37.

Zheng G W，Li J P，Bai F M，et al. Control of springback in stamping process of truck longeron[J]. Mould Industry，2009，35（1）：28-37．

[11]孔德帅，郎利辉，孙志莹，等．铝合金薄壁波纹板充液成形工艺研究[J]. 精密成形工程，2015，7（3）：62-66．

Kong D S，Lang L H，Sun Z Y，et al．Hydroforming process of aluminum alloy thinwall corrugated sheet[J]． Journal of Netshape Forming Engineering，2015，7（3）：62-66.

[12]王玲，巫永坤，张建民，等.飞机铝合金双曲度蒙皮充液成形的数值模拟与试验[J]. 锻压技术，2017，42（6）：169-173.

Wang L，Wu Y K，Zhang J M，et al．Numerical simulation and experiment on the hydroforming for double curved aircraft aluminum alloy skin[J]．Forging ＆ Stamping Technology，2017，42(6): 169-173．

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】