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Positioning of a conical cutter for centrifugal blade finish machining based on the best uniform approximation (BUA) method

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Abstract

To demonstrate the closeness between the tool and nominal surfaces during the flank milling of centrifugal blades, discrete points on the conical cutter tool axis are projected in the nominal surface normal direction, and a mapping curve on the conical surface is obtained. On this basis, a novel toolpath planning method, under hub surface constraints, is proposed for flank milling centrifugal blades using a conical cutter based on the BUA method. This is a nonlinear optimisation problem, therefore the programming linearization method is provided. The effectiveness of the proposed BUA method is validated using a numerical example featuring a ruled surface and compared against the least square (LS) and two-point offset (DPO) methods. The influence of the conical cutter cone angle on the planning error is also analysed. The proposed BUA method is also applied to a centrifugal blade flank milling numerical example and its feasibility is verified.

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Funding

This work was supported by the Natural Science Foundation of Shanghai, and the award number is 15ZR1417200.

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  1. Shanghai Dianji University, 300 Shui Hua Rd, Shanghai, 201306, People’s Republic of China

    Lei Dong

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  1. Lei Dong
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Lei Dong improves processing efficiency and machining precision of centrifugal 3D impeller.

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Correspondence to Lei Dong.

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Dong, L. Positioning of a conical cutter for centrifugal blade finish machining based on the best uniform approximation (BUA) method. Int J Adv Manuf Technol 127, 3209–3219 (2023). https://doi.org/10.1007/s00170-023-11706-5

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