Effect of Blank Shape and Size on the Forming Quality of Thread Shaft Rolling in Cross Wedge Rolling

Abstract:

The defects of the lower tooth height and of larger pitch in thread portion of rolled pieces are prone to appearing when rolling thread shaft in cross wedge rolling. To solve this problem, changing the blank shape and size were tried. Two types of concave conical and round blanks are designed with concave conical blanks obtained by rolling in the cross wedge rolling. Because the design of the rolling die is simple, good precision of blank can be ensured. Multiple size types of blanks were designed and the rolling experiment was made in the rolling mill of model H630. By measuring the values of the tooth height and pitch, the effect of blank shape on thread shafts rolled in the wedge rolling were investigated carefully. The reasonable size range of the blank shape was obtained. The conclusions above pave the theoretical foundation for the in-depth study on this technology.

• Periodical: Advanced Materials Research (Volume 853)
• Pages: 605-609
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.853.605
• Online since: December 2013
• Authors: Hua Jun Yan*, Hao En Mao, Guo Chang Li, Xiao Xi He, Jin Ping Liu, Zheng Huan Hu
• Keywords: Concave Cone, Cross Wedge Rolling, Pitch, Round Blank, Thread Shafts, Tooth Height

References

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