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Research Papers

Precision Forming of the Straight Edge of Square Section by Die-Less Spinning

[+] Author and Article Information
Z. Jia

Key Laboratory of Fundamental Science
for National Defense of Aeronautical
Digital Manufacturing Process,
Shenyang Aerospace University,
No. 37, Daoyi South Avenue,
Daoyi Development District,
Shenyang ▪, China
e-mail: zjia@alum.imr.ac.cn

Q. Xu

Key Laboratory of Fundamental Science
for National Defense of Aeronautical Digital
Manufacturing Process,
Shenyang Aerospace University,
No. 37, Daoyi South Avenue,
Daoyi Development District,
Shenyang ▪, China
e-mail: xuqiangfifa@126.com

Z. R. Han

Key Laboratory of Fundamental Science
for National Defense of Aeronautical
Digital Manufacturing Process,
Shenyang Aerospace University,
No. 37, Daoyi South Avenue,
Daoyi Development District,
Shenyang ▪, China
e-mail: hanren888@163.com

W. F. Peng

Zhejiang Provincial Key Lab
of Part Rolling Technology,
Ningbo University,
818 Feng Hua Road,
Jiangbei, Ningbo ▪, China
e-mail: pengwenfei@nbu.edu.cn

1Corresponding author.

Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received September 9, 2014; final manuscript received March 30, 2015; published online September 9, 2015. Assoc. Editor: Brad L. Kinsey.

J. Manuf. Sci. Eng 138(1), 011006 (Sep 09, 2015) (5 pages) Paper No: MANU-14-1465; doi: 10.1115/1.4030303 History: Received September 09, 2014

Die-less spinning is a forming process to achieve cone shape parts. It is suitable for small batch production because of low costs and short development cycle. In order to increase the forming accuracy of the square section die-less spinning process, the roller path is designed and amended. Using a 5-axis CNC spinning machine, the square section cone is spun and its edge arc degree is calculated. Roller path amendment coefficient is proposed and deduced through the geometric relationship. Based on the experimental result in which the amendment coefficient is employed, the second amendment coefficient is deduced and used to perform another spinning experiment. By comparison of the section edge arc degrees of the workpiece obtained with and without using the amendment coefficients, it is found that the forming accuracy in experiments with the amendment is remarkably enhanced.

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References

Figures

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Fig. 1

Square section cone formed by die-less spinning: (a) schematic of the blank clamping and (b) schematic of the workpiece forming

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Fig. 2

Schematic diagram of the roller path: (a) axial view, (b) radial view, and (c) local amplification of (b)

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Fig. 3

Coordinates of the roller path in 3601 deg–3960 deg: (a) radial coordinate and (b) axial coordinate

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Fig. 4

The workpiece spun by die-less spinning: (a) workpiece spun without roller path amending, (b) workpiece spun with once roller path amending, and (c) workpiece spun with twice roller path amending

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Fig. 5

Geometric parameters defined for the assessment of the arc degree

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Fig. 6

Schematic diagram of amendment methods

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Fig. 7

Total adjustment coefficients in 360 deg

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