Analysis and Development of the CFRP Boring Bar for Stability Improvement 


Vol. 24,  No. 12, pp. 4413-4427, Dec.  2023
10.1007/s12221-023-00376-5


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  Abstract

Boring bars with a large length-to-diameter ratio have become increasingly indispensable for deep hole machining. However, the dynamic performance of conventional boring bars may be inadequate, resulting in vibrations. In this paper, a novel boring bar with composites and a constrained layer damping structure was fabricated to suppress vibrations during the boring operation. Initially, the configuration of the CFRP boring bar was proposed based on theoretical analysis, and then the modal parameters were calculated using the bending strain energy method and cantilever beam theory. Subsequently, the geometric design parameters were optimized analytically using the finite element method. Modal and cutting tests were then conducted to evaluate the cutting stability of a CFRP boring bar with a length-to-diameter ratio of 8.4. The modal parameters, vibration signals, and cutting force signals were measured and compared with a carbide boring bar. The experimental results indicated that there was a significant improvement in the cutting stability of the CFRP boring bar.

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  Cite this article

[IEEE Style]

L. Lu, C. Ni, G. Liu, B. Qian, Q. An, Z. Cao, L. Zhang, J. Li, "Analysis and Development of the CFRP Boring Bar for Stability Improvement," Fibers and Polymers, vol. 24, no. 12, pp. 4413-4427, 2023. DOI: 10.1007/s12221-023-00376-5.

[ACM Style]

Licheng Lu, Can Ni, Gang Liu, Bo Qian, Qinglong An, Zhenzhen Cao, Liqiang Zhang, and Junli Li. 2023. Analysis and Development of the CFRP Boring Bar for Stability Improvement. Fibers and Polymers, 24, 12, (2023), 4413-4427. DOI: 10.1007/s12221-023-00376-5.

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