Abstract
Due to the geometric complexity, tool orientations usually change dynamically during freeform surface machining with 5-axis machine tool. As the kinematic performance of the rotary axes is usually weaker than that of the linear axes, the real cutting speed is difficult or even impossible to reach the desired level, which further leads to low machining efficiency. This paper presents a region-based 3 + 2-axis machining toolpath generation method with 5-axis machine tool. The surface is first divided into several preliminary sub-surfaces using K-means clustering algorithm. A post processing procedure is then carried out to optimise the preliminary sub-surfaces to ensure the machinability. For each sub-surface, gouging-/collision-free tool orientations are first calculated and then the optimal combination of the fixed tool orientation and the feed direction is determined by maximising the average machining strip width for toolpath generation. The proposed method is tested by a case surface and the comparisons to some other traditional methods are also provided.
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References
Li YG, Lee ZH, Gao J (2015) From computer-aided to intelligent machining: recent advances in CNC machining research. Proc Inst Mech Eng B J Eng Manuf 229(7):1087–1103
Lasemi A, Xue DY, Gu PH (2010) Recent development in CNC machining of freeform surfaces: a state-of-the-art review. Comput Aided Des 42(7):549–566
Zhang K, Tang K (2016) Optimal five-axis tool path generation algorithm based on double scalar fields for freeform surfaces. Int J Adv Manuf Technol 83(9–12):1503–1514
Wang Y, Yan CY, Yang JZ, LEE CH (2017) Tool path generation algorithm based on covariant field theory and cost functional optimization and its applications in blade machining. Int J Adv Manuf Technol 90(1–4):927–943
Jun CS, Cha K, Lee YS (2003) Optimizing tool orientation for 5-axis machining by configuration-space search method. Comput Aided Des 35(6):641–654
Lu J, Cheatham R, Jensen CG, Chen Y, Bowman B (2008) A three-dimensional configuration-space method for 5-axis tessellated surface machining. Int J Comput Integr Manuf 21(5):550–568
Wang N, Tang K (2007) Automatic generation of gouge-free and angular-velocity-compliant five-axis toolpath. Comput Aided Des 39(10):841–852
Castagnetti C, Duc E, Ray P (2008) The domain of admissible orientation concept: a new method for five-axis toolpath optimization. Comput Aided Des 40(9):938–950
Farouki RT, Li SQ (2013) Optimal tool orientation control for 5-axis CNC milling with ball-end cutters. Comp Aided Geom Des 30(2):226–239
Lee YS, Ji H (1997) Surface interrogation and machining strip evaluation for 5-axis CNC die and mold machining. Int J Prod Res 35(1):225–252
Fard MJB, Feng HY (2009) Effect of tool tilt angle on machining strip width in five-axis flat-end milling of free-form surfaces. Int J Adv Manuf Technol 44(3–4):211–222
Gong H, Fang FZ, Hu XT, Cao LX, Liu J (2010) Optimization of tool positions locally based on the BCELTP for 5-axis machining of free-form surfaces. Comput Aided Des 42(6):558–570
Liu X, Li YG, Gao J (2015) A multi-perspective dynamic feature concept in adaptive NC machining of complex freeform surfaces. Int J Adv Manuf Technol 82(5):1259–1268
Chiou CJ, Lee YS (2002) A machining potential field approach to toolpath generation for multi-axis sculptured surface machining. Comput Aided Des 34(5):357–371
Anotaipaiboon W, Makhanov SS (2005) Toolpath generation for five-axis NC machining using adaptive space-filling curves. Int J Prod Res 43(8):1643–1665
Liu X, Li YG, Ma SB, Lee CH (2015) A toolpath generation method for freeform surface machining by introducing the tensor property of machining strip width. Comput Aided Des 66:1–13
Gray JP, Ismail F, Bedi S (2007) Arc-intersect method for 3\( \frac{1}{2}\frac{1}{2} \)-axis toolpaths on a 5-axis machine. Int J Machine Tools Manuf 47(1):182–190
Chen ZC, Dong ZM, Vickers GW (2003) Automated surface subdivision and toolpath generation for 3\( \frac{1}{2}\frac{1}{2} \)-axis CNC machining of sculptured parts. Comp Ind 50(3):319–331
Roman A, Bedi S, Ismail F (2006) Three-half and half-axis patch-by-patch NC machining of sculptured surfaces. Int J Adv Manuf Technol 29(5):524–531
Flores RA (2007) Surface partitioning for 3+2-axis machining. University of Waterloo, Waterloo, ON, Canada
Bi Q, Ding H, Wang Y. Safe and short tool length generation for 3+2 axis NC machining of a ball-end cutter using graphics hardware. In: Xiong C, et al., editors. Intelligent robotics and applications. ICIRA 2008: Proceedings of the first international conference on intelligent robotics and applications; 2008 Oct 15–17; Wuhan, China. Berlin: Springer; 2008: 348–355
Zhu Y, Chen ZT, Ning T, Xu RF (2016) Tool orientation optimization for 3+2-axis CNC machining of sculptured surface. Comput Aided Des 77:60–72
Lee YS (1998) Mathematical modelling using different endmills and tool placement problems for 4- and 5-axis NC complex surface machining. Int J Prod Res 36(3):785–814
Lee YS (1998) Non-isoparametric toolpath planning by machining strip evaluation for 5-axis sculptured surface machining. Comput Aided Des 30(7):559–570
Funding
The results presented in this paper are generated from the projects funded by National Natural Science Foundation Project of China (No. 51605217 and U1537209) and the Jiangsu Province Outstanding Youth Fund (No. BK20140036).
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Liu, X., Li, Y. & Li, Q. A region-based 3 + 2-axis machining toolpath generation method for freeform surface. Int J Adv Manuf Technol 97, 1149–1163 (2018). https://doi.org/10.1007/s00170-018-1982-1
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DOI: https://doi.org/10.1007/s00170-018-1982-1