Transactions of Materials and Heat Treatment

Title：Dimensional precision analysis and process parameter optimization on fine blanking for involute toothed parts

Authors： Li Huajian Zhao Yanqi Xiao Zhenyan Liu Jinju

Unit： China Machinery Fine Blanking Technology (Fujian) Co. Ltd.

KeyWords： involute spline hole range analysis interpolation method service life of punch dimensional precision

ClassificationCode：TG386

year,vol(issue):pagenumber：2022,47(8):83-87

Abstract：

Deform-3D software was used to simulate the fine blanking for involute spline hole of an automobile gearbox part, and the structural characteristics of finite element model for the spline hole fine blanking were analyzed, the displacement amount of point was taken as the evaluation standard of the dimensional precision for spline hole fine blanking simulation. The influences of three process parameters, such as clearance between punch and die, fillet radius of punch and blank holder force, on the fine blanking results were studied by comprehensive experimental design method, and the optimal combination of process parameters was obtained as follows: the clearance between punch and die was 0.04 mm, the fillet radius of punch was 0.4 mm and the blank holder force was 724 kN. By using range analysis method, the influence degree of each factor on the dimensional precision of fine blanking spline hole was in the order of clearance between punch and die > fillet radius of punch > blank holder force. The stress analysis of punch in the optimal process parameters combination simulation experiment was carried out by interpolation method, and the punch service life was predicted to be 4825 times, which was in line with the design expectation. Finally，the actual spline hole fine blanking experiment was carried out with the optimized parameters combination, and the dimensional precision of spline hole forming was obviously improved.

Funds：

作者简介：李华建（1995-），男，硕士研究生，E-mail：826070084@qq.com；通信作者：赵彦启（1962-），男，硕士，硕士生导师，研究员，E-mail：yanqi.zhao@cmfb.com.cn

Reference：

[1]周开华.简明精冲手册[M].2版.北京：国防工业出版社,1993.

Zhou K H. Manual of Fine Blanking [M]. 2nd Edition. Beijing:National Defense Industry Press,1993.

[2]涂光祺.精冲技术[M].北京：机械工业出版社,1990.

Tu G Q. Fine Blanking Technology [M]. Beijing：China Machine Press,1990．

[3]杨泽亚,杜贵江,李佳盈,等.大尺寸渐开线齿圈精冲技术[J].锻压技术,2021，46（1）：148-153.

Yang Z Y, Du G J, Li J Y, et al. Fine blanking technology on large-size involute ring gear [J]. Forging & Stamping Technology, 2021，46（1）：148-153.

[4]胡建华,付炳欣,秦建军.小模数齿形精冲的数值模拟及参数优化[J].塑性工程学报,2010,17(1):52-56.

Hu J H, Fu B X, Qin J J. Numerical simulation and optimization of processing parameters for fine-blanking of fine-pitch gear[J]. Journal of Plasticity Engineering,2010,17(1):52-56.

[5]毛秀,张祥林,查想,等.厚板齿形零件精冲成形数值模拟与缺陷分析[J].模具工业,2014,40(2):13-16.

Mao X, Zhang X L, Cha X, et al. Numerical simulation and defect analysis of fine blanking forming for thick plate tooth profile part[J]. Die & Mould Industry,2014,40(2):13-16.

[6]赵彦启,肖振沿,刘金菊,等.大型零件精冲尺寸精度控制[J].锻压技术,2020,45(4):57-61.

Zhao Y Q, Xiao Z Y, Liu J J, et al. Size accuracy control of large-scale parts on fine blanking [J]. Forging & Stamping Technology, 2020,45(4):57-61.

[7]钟少基,黄诗君.基于数值模拟的厚板精冲件剪切面缺陷研究[J].塑性工程学报,2018,25(2):79-85.

Zhong S J, Huang S J. Study on shear surface defects of heavy plate blanking parts based on numerical simulation [J]. Journal of Plasticity Engineering,2018,25(2):79-85.

[8]虞松,陈军,阮雪榆.韧性断裂准则的试验与理论研究[J].中国机械工程,2006，(19):2049-2052.

Yu S, Chen J, Ruan X Y. Experimental and theoretical research on ductile fracture criterion[J]. China Mechanical Engineering,2006，(19):2049-2052.

[9]刘天聪.精冲模具间隙与刃口尺寸及公差的确定方法[J].精密成形工程,2010,(1):73-76.

Liu T C. The method to determine the clearance and edge size and tolerance of fineblanking die [J]. Journal of Netshape Forming Engineering,2010,(1):73-76.

[10]温莉敏,许树勤.压边力对精冲质量影响的有限元分析[J].淮海工学院学报:自然科学版,2015,(2):6-9.

Wen L M, Xu S Q. Finite element analysis of the influence of blank-holder force on fine-blanking quality [J]. Journal of Huaihai Institute of Technology：Nature Science Edition,2015,(2):6-9.

[11]程然,胡建华,黄尚宇,等.基于有限元分析的精冲凸模寿命估算[J].塑性工程学报,2010,17(3):119-123.

Cheng R, Hu J H, Huang S Y, et al. The estimation of fine-blanking punch life based on FEM analysis [J]. Journal of Plasticity Engineering,2010,17(3):119-123.

[12]赵少汴.局部应力应变法的推广应用[J].机械设计,2000,17(3):11-13，47.

Zhao S B. Popularization and application of partial stress-strain method [J]. Machine Design,2000,17(3):11-13,47.

[13]陈伟,李炳.低碳钢精冲成形工艺研究及凸模寿命预测[J].模具制造,2016,16(2):39-42.

Chen W, Li B. Research on the forming process of low carbon steel and the prediction of the die life [J].Die & Mould Manufacture,2016,16(2):39-42.

Service：

【This site has not yet opened Download Service】【Add Favorite】