锻压技术

突缘叉锻造成形预应力组合模具改进

英文标题：Optimization of prestressed compound dies for flange fork forging

关键词：突缘叉锻造组合模具预应力环开裂

分类号：

出版年,卷(期):页码：2015,40(4):5-8

摘要：

在突缘叉锻造成形过程中，上模模腔底部容易开裂，导致锻件出毛刺，增加生产风险。利用Deform软件分析了突缘叉锻造成形过程的金属流动规律和模腔开裂原因。结果表明：模腔凸台在冲击载荷下出现应力集中并导致模具断裂失效。通过在模具上添加预应力环以抵消模具所受冲击载荷、降低模具应力，并利用SolidWorks软件计算了预应力。优化结果表明：采用组合模具结构时，模具与应力环最大预应力分别为480和420 MPa，均处于安全范围内。模具原始开裂位置应力降低了约950 MPa，生产过程中，模具始开裂前锻件的产量由200件左右提高到2700件左右。

During the flange fork forging process, it is easy to crack at the bottom of die cavity, which leads to the forging burrs and increases the possibility of risk in production. The metal flowing regularity and the reasons of die cavity crack in flange fork forging process were analyzed by Deform software. The results show that stress concentration is generated by the impact load at the boss of die cavity and results in the crack failure of die fracture. Prestressed ring was applied to the die to counteract the impact load and to reduce die stresses, and the prestress was calculated by SolidWorks software. Optimization results show that by compound die structure, the maximum prestresses of the die and the prestressed ring are 480 and 420 MPa respectively, which are both within the safe range. The stress at the cracking location of the original die is reduced by about 950 MPa. In the practical production, die forgings production increases from 200 pieces to about 2700 pieces before the cracking of the die.

基金项目：

上海市内涵科研建设项目(nhky-2013-05);上海工程技术大学研究生科研创新资助项目（E1-0903-14-01136）

王宇晓(1990-),男,硕士研究生

参考文献：

[1]高锦张.塑性成形工艺与模具设计[M].北京:机械工业出版社,2007.

Gao J Z. Plastic Forming Process & Die Design [M]. Beijing:China Machine Press, 2007.

[2]王晓明, 王大勇.突缘叉模锻件折叠缺陷分析[J].大连交通大学学报,2009,30(6):27-29.

Wang X M, Wang D Y. Analysis of fold defects of die forging flange yoke [J]. Journal of Dalian Jiaotong University,2009, 30(6):27-29.

[3]薛锦达.突缘叉热模锻成形过程分析及模具设计的改进[J].模具技术,1989,(6):29-33.

Xue J D. Analysis of hot die forging forming and die design improvement of flange yoke [J]. Die and Mould Technology,1989, (6): 29-33.

[4]宋培林.突缘叉模锻的设计改进[J].模具技术,2008,(6):14-19.

Song P L. Improvement of hot die forging process for flange yoke [J]. Die and Mould Technology,2008, (6): 14-19.

[5]陈科,殷磊,高峰.双联虎克万向节突缘叉相位角对传动特性影响的分析[J].中国机械工程,2013,24(17):23-27.

Chen K,Yin L,Gao F.Hooke double universal joint fork flange phase angle analysis of the influence on transmission characteristics[J]. China Mechanical Engineering,2013,24(17):23-27.

[6]夏巨谌,韩凤麟,赵一平,等.中国模具设计大典[M].江西:江西科学技术出版社,2003.

Xia J C, Han F L, Zhao Y P, et al. China Die & Mould Design Canon [M]. Jiangxi:Jiangxi Science & Technology Press, 2003.

[7]胡建军,李小平.DEFORM-3D塑性成形CAE应用教程[M].北京:北京大学出版社,2011.

Hu J J, Li X P.DEFORM-3D CAE Applications Forming Tutorial [M]. Beijing:Peking University Press, 2011.

[8]王仲仁，皇甫骅，辛宗仁,等.锻压手册-锻造[M].北京：机械工业出版社，2007.

Wang Z R,Huangfu H,Xin Z R,et al.Forging Manual-Forging[M].Beijing:China Machine Press, 2007.

[9]张俊善.材料的高温变形与断裂[M].北京:科学出版社,2007.

Zhang J S. High Temperature Deformation and Fracture of Material [M]. Beijing:Science Press, 2007.

[10]来小丽,周春梅,王强.预应力结构模具设计理论的研究[J].科技信息,2009,(8):359-360.

Lai X L, Zhou C M, Wang Q. Research on the theory of pre-stressed structural die design [J]. Science & Technology Information, 2009, (8): 359-360.

[11]黄德海,陈国学.多层组合预应力模具失效分析及优化设计[J]塑性工程学报,2003,10(4):58-61.

Huang D H, Chen G X. Failure analysis and optimization of multi-layer pressure die system [J]. Journal of Plasticity Engineering,2003, 10(4): 58-61.

[12]敖文刚,唐全波,黄勇刚. 挤压预应力组合凹模强度分析及设计[J]. 特种铸造及有色合金,2013,（5）:405-409.

Ao W G,Tang Q B,Huang Y G. Analysis and design of prestressed compound die strength[J].Special Casting & Nonferrous Alloys, 2013,(5):405-409.

[13]Dassault Systemes SolidWorks Corp. Simulation 2009 Training Manuals SolidsWorks Simulation [M].Beijing:China Machine Press,2009.

]14]黄锐,吕佐明,黄鹭.45号钢的正火工艺[J].南方金属,2002,(129):19-22.

Huang R, Lv Z M, Huang L. On the normalization of 45 steel [J]. Southern Iron and Steel，2002,(129):19-22.

服务与反馈：

【文章下载】【加入收藏】