Abstract
Pocket molds are widely applied, whose pockets usually contain many transition corners. The machining efficiency of pocket mold can be improved significantly through deep milling. However, tools are subject to quick wear and damage during corner deep milling. Corner rounding along tool path by different approaches has great influence on the tool wear in deep milling of hardened steel pocket mold. Therefore, conducting related researches on tool wear is of practical significance. Firstly, continuous cutting pocket molds were designed for typical corners of different corner rounding approaches as per the basic theory of tool engagement angle in milling, and then hardened steel was subject to deep milling and the tool was inspected and analyzed; afterwards, tool wear process and mechanism, etc. were studied. The results showed that during the deep milling of hardened steel, adhesion, oxidation, and diffusion wear appeared gradually since the stabilization of tool wear and further aggravated along with the cutting process, which led to wear and peeling of coating as well as highly possible tool damage like tipping and chipping of tool nose in later period. It was easy to generate high tool-chip interface temperature and great tool load in the high-speed deep milling of hardened steel with small corner rounding radius. In this case, the cutting edge was under considerable thermal fatigue and mechanical shock and thus subject to extensive abrasion wear, adhesion wear, and diffusion wear. The tool wear could be reduced notably by increasing the corner rounding radius.
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References
SX W, Ma W, Li B, Wang CY (2016) Trochoidal machining for the high-speed milling of pockets. J Mater Process Technol 233:29–43
Choy HS, Chan KW (2003) Modeling cutter swept angle at cornering cut. Int J CAD/CAM 3(1):1–12
Han X, Tang L (2015) Precise prediction of forces in milling circular corners. Int J Mach Tools Manuf 88:184–193
Bae SH, Ko K, Kim BH, Choi BK (2003) Automatic feedrate adjustment for pocket machining. Comput Aided Des 35(5):495–500
Karunakaran KP, Shringi R, Ramamurthi D, Hariharan C (2010) Octree-based NC simulation system for optimization of feed rate in milling using instantaneous force model. Int J Adv Manuf Technol 46(5–8):465–490
Liu X, Ding YP, Yue C, Zhang R, Tong X (2015) Off-line feedrate optimization with multiple constraints for corner milling of a cavity. Int J Adv Manuf Technol 7:1–9
Choy H, Chan K (2002) Enhanced strategy for milling corners. IMeche, part B. J Eng Manuf 16(8):1135–1154
Zhao ZY, Wang CY, Zhou HM, Qin Z (2007) Pocketing toolpath optimization for sharp corners. J Mater Process Technol 192:175–180
Ibaraki S, Yamaji I, Matsubara A (2010) On the removal of critical cutting regions by trochoidal grooving. Precis Eng 34(3):467–473
Dumitrache A, Borangiu T (2012) IMS10-image-based milling toolpaths with tool engagement control for complex geometry. Eng Appl Artif Intell 25(6):1161–1172
Dolinšek S, Sustarsic B, Kopac J (2001) Wear mechanisms of cutting tools in high-speed cutting processes. Wear 250(1–12):349–356
Ghani JA, Choudhury IA, Masjuki HH (2004a) Performance of P10 TiN coated carbide tools when end milling AISI H13 tool steel at high cutting speed. J Mater Process Technol 153-154(1):1062–1066
YS L, Lin HM, Chen YC (2007) Feasibility study of the minimum quantity lubrication in high-speed end milling of NAK80 hardened steel by coated carbide tool. Int J Mach Tools Manuf 47(11):1667–1676
CY W, Xie YX, Qin Z, Lin HS, Yuan YH, Wang QM (2015) Wear and breakage of TiAlN- and TiSiN-coated carbide tools during high-speed milling of hardened steel. Wear 336-337:29–42
ÁR M, Diniz AE (2017) Tool wear analysis in the machining of hardened steels. Int J Adv Manuf Technol 92:4095–4109
Braghini A, Coelho RT (2001) An investigation of the wear mechanisms of polycrystalline cubic boron nitride (PCBN) tools when end milling hardened steels at low/medium cutting speeds. Int J Adv Manuf Technol 17:244–257
XB C, Zhao J, Dong YW (2013) The effects of cutting parameters on tool life and wear mechanisms of CBN tool in high-speed face milling of hardened steel. Int J Adv Manuf Technol 66:955–964
Castanhera IDC, Diniz AE (2016) High speed milling of hardened steel convex surface. Procedia Manufacturing 5:220–231
Wang CY, Ding F, Tang DW, Zheng LJ, Li SY, Xie YX (2016) Modeling and simulation of the high-speed milling of hardened steel SKD11 (62 HRC) based on SHPB technology. Int J Mach Tool Man 108:13–26
Pu Z, Singh A (2013) High speed ball nose end milling of hardened AISI A2 tool steel with PCBN and coated carbide tools. J Manuf Process 15(4):467–473
Wojciechowski S, Maruda RW, Barrans S, Nieslonv P, Krolczyk GM (2017) Optimisation of machining parameters during ball end milling of hardened steel with various surface inclinations. Measurement 111:18–28
Wojciechowski S, Maruda RW, Królczyk GM, Niesłony P (2018) Application of signal to noise ratio and grey relational analysis to minimize forces and vibrations during precise ball end milling. Precis Eng 51:582–596
Wojciechowski S (2011) Machined surface roughness including cutter displacements in milling of hardened steel. Metrol Meas Syst 18(3):429–440
Qin J, Long Y, Zeng J, Wu S (2014) Continuous and varied depth-of-cut turning of gray cast iron by using uncoated and TIN/Al2O3 coated silicon nitride-based ceramic tools. Ceram Int 40(8:12245–12251
Wang C, Xie Y, Zheng L, Qin Z, Tang D, Song Y (2014) Research on the chip formation mechanism during the high-speed milling of hardened steel. Int J Mach Tools Manuf 79(4):31–48
Oxley PLB (1962) An analysis for orthogonal cutting with restricted tool-chip contact. Int J Mech Sci 4(2):129–135
Altintas Y (2012) Manufacturing automation: metal cutting mechanics, machine tool vibrations, and CNC design. Cambridge university press, Cambridge
Ghani JA, Choudhury IA, Masjuki HH (2004b) Wear mechanism of TiN coated carbide and uncoated cermets tools at high cutting speed applications. J Mater Process Technol 153:1067–1073
Oliveira AJD, Diniz AE (2009) Tool life and tool wear in the semi-finish milling of inclined surfaces. J Mater Process Technol 209(14):5448–5455
Koshy P, Dewes RC, Aspinwall DK (2002) High speed end milling of hardened AISI D2 tool steel (∼58 HRC). J Mater Process Technol 127(2):266–273
Nouari M, Ginting A (2006) Wear characteristics and performance of multi-layer CVD-coated alloyed carbide tool in dry end milling of titanium alloy. Surf Coat Technol 200(18–19):5663–5676
Haron CHC, Ginting A, Arshad H (2007) Performance of alloyed uncoated and CVD-coated carbide tools in dry milling of titanium alloy Ti-6242S. J Mater Process Technol 185(1–3):77–82
Venugopal KA, Paul S, Chattopadhyay AB (2007) Growth of tool wear in turning of Ti6Al4V alloy under cryogenic cooling. Wear 262(9):1071–1078
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This work reported in this paper is conducted in conjunction with “Guangdong public welfare research and capacity building project (2017A010102011)” and “Guangdong provincial education department project (2015KTSCX028).”
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Shixiong, W., Zhiyang, L., Chengyong, W. et al. Tool wear of corner continuous milling in deep machining of hardened steel pocket. Int J Adv Manuf Technol 97, 1315–1333 (2018). https://doi.org/10.1007/s00170-018-1994-x
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DOI: https://doi.org/10.1007/s00170-018-1994-x