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New radial overlap pass for efficient CPO tool paths

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Abstract

In the current state of pocket machining using Contour-Parallel Offset (CPO) tool paths, the user typically manually inputs the axial and radial passes parameters into the machine tool. To enhance the automation of machining processes, this paper introduces a fresh formulation for the radial pass between contours. This new formulation is designed to be adaptable to all forms of polygonal pocket boundaries, including those involving line-line or line-arc configurations. By incorporating this innovative radial pass, automatic adjustment is achieved for pocket contours of various shapes, ensuring precise recesses and eliminating the occurrence of uncut areas between passes, particularly at corners. A key advantage of this radial overlap pass lies in its capability to minimize the overall length of the tool path. This benefit proves particularly significant during the initial roughing phase of pocket machining. A comprehensive evaluation through detailed comparisons and tested scenarios has been conducted. The results obtained for the three tested cases demonstrate a significant advantage for our new radial overlap pass compared to the best methods seen in the literature. This validates the effectiveness of this new approach.

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Acknowledgements

This work is supported by the post-graduation of the Département de Génie Mécanique, Faculté de Technologie of the Université Batna 2, Algeria.

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  1. Innovation Laboratory in Eco Design of Mechanical Structures and Seismic, Faculty of Technology, Mechanical Engineering Department, Batna 2 University, Fesdis, 05000, Batna, Algeria

    Elhachemi Bahloul

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  1. Elhachemi Bahloul
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Appendices

Appendix 1

CPO trajectory generation algorithm.

figure b

Appendix 2

Coordinates of CPO tool paths.

Table 9

Table 9 Coordinates of CPO tool paths (dr = 19.60 mm, 98% of diameter) (Appendix Fig. 10)
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Appendix 3

Figure 

Fig. 10
figure 10

CPO with tool guide curve (dr = 19.60)

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10

Appendix 4

Table 10

Table 10 Coordinates of CPO tool paths with (dr = 16.3840 mm) (Appendix Fig. 11)
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Appendix 5

Figure 11

Fig. 11
figure 11

CPO with tool guide curve (dr = 16.3840)

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11

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Bahloul, E. New radial overlap pass for efficient CPO tool paths. Int J Adv Manuf Technol 130, 2969–2984 (2024). https://doi.org/10.1007/s00170-023-12803-1

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  • DOI: https://doi.org/10.1007/s00170-023-12803-1

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