Analysis of the forming load impact factors on hot precision forging of cylindrical gears

被引：0

作者：

Zuo, Bin ^{[1
]}

Wang, Bao-Yu ^{[1
]}

Yang, Le-Yi ^{[1
]}

Li, Zhi ^{[1
]}

Zheng, Ming-Nan ^{[1
]}

机构：

[1] School of Mechanical Engineering, University of Science and Technology Beijing, Beijing

来源：

Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | 2015年 / 35卷 / 01期

关键词：

Forming load; Gear forging; Hot precision forging; Tooth impact factor;

D O I：

10.15918/j.tbit1001-0645.2015.01.004

中图分类号：

学科分类号：

摘要：

A formula for calculating the forming load of gears in hot precision forging was studied. The formula of forming load for gear forging was deduced by introducing the tooth impact factor into the formula for forming load of closed upsetting. The formula for the tooth impact factor was fitted by the data got from FEM simulation of forging process, in which gears of module 1, 2, 3, 4 mm were forged. The effects of the following parameters on the precision forming load were analyzed based on the new forming load formula: the diameter of root circle and bore of the workpiece, the height of the workpiece, module and flow stress of the billet material. Some forging tests for gears were conducted and the data of forming load in literature was utilized to validate the validity of the formula, as well as the application scope. The formula was further deduced to calculate the dimension range of forged gears for the presses with different nominal pressure, which was of engineering significance. ©, 2015, Beijing Institute of Technology. All right reserved.

引用

页码：19 / 22

页数：3

共 11 条

[1]

Chen X., Research on key technology of warm forging for spur gear, (2011)

[2]

Ohga K., Kondo K., Jitsunari T., Research on precision die forging utilizing divided flow (Second report, experimental study of processes utilizing flow relief-axis and relief-hole), Bulletin of JSME, 209, 25, pp. 1836-1842, (1982)

[3]

Cai J., Dean T.A., Hu Z.M., Alternative die designs in net-shape forging of gears, Journal of Materials Processing Technology, 150, pp. 48-55, (2004)

[4]

Liu Q., Li D., Numerical simulation analysis of cold extrusion for spur gear based on streamline cavity, Journal of Engineering Design, 12, 1, pp. 15-19, (2005)

[5]

Hu C., Liu Q., Zhao Z., Et al., Two step forging process of spur gear based on rigid parallel motion, Journal of Shanghai Jiaotong University, 15, 2, pp. 241-244, (2010)

[6]

Ohga K., Kondo K., Jitsunari T., Research on precision die forging utilizing divided flow (First report, theoretical analysis of process utilizing flow relief-axis andrelief-hole), Bulletin of JSME, 209, 25, pp. 1829-1835, (1982)

[7]

Choi J., Cho H.Y., An upper-bound analysis for the forging of spur gears, Journal of Materials Processing Technology, 104, pp. 64-73, (2000)

[8]

Choi J.C., Choi Y., A study on the forging of external spur gears: upper-boundanalyses and experiments, International Journal of Machine Tools & Manufacture, 38, pp. 1193-1208, (1998)

[9]

Xia J., Precision Plastic Forming Process, pp. 19-21, (1999)

[10]

Sadeghi M.H., Gear forging-mathematical modeling and experimental validation, Journal of Manufacturing Science and Engineering, 125, pp. 753-762, (2003)

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