Abstract
In the final milling process of free-form surfaces, commonly employed in the production of molds and dies, knowledge of the cutting conditions and a strategy for choosing adequate processing routes can provide a significant reduction in the manufacturing times. The objective of this work is to evaluate quantitatively and qualitatively the surface quality behavior of a steel used in the production of dies and molds. The analysis was carried out for hardened AISI H13 tool steel inclined at an angle of 60° and for different cutting path orientations. The roughness of milled surfaces was measured and verified by scanning electron microscopy in order to compare the strategies and the surface textures obtained. Four different cutting path strategies were employed in these experiments, with horizontal and vertical single-direction rastering, both upward and downward. The conclusion is that, in the vertical upward strategy, the surface displays greater roughness and an irregularity with regard to plastic deformation. The other strategies showed lower roughness and similar regularity. Magnetic Barkhausen noise, used for sub-surface characterization, was found to be largest when measured along the cutting direction of the inserts. These directions coincided with the directions of greatest plastic deformation in the sub-surface region.
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References
Junz Wang JJ, Zheng MY (2003) On the machining characteristics of H13 tool steel in different hardness states in ball end milling. Int J Adv Manuf Technol 22:855–863
Bet L (1999) Estudo da Medição da Textura de Superfícies Com Sondas Mecânicas e Sondas Ópticas Tipo Seguidor. Ph.D. Thesis (Mechanical Engineering) Universidade Federal de Santa Catarina. (in Portuguese)
Tabenkin A (2005) Surface finish: a machinist’s tool, a design necessity. Mod Mach Shop. Nº 3. 30 May www.mmsonline.com
Chen JS, Huang YK, Chen MS (2005) A study of the surface scallop generating mechanism in the ball-end milling process. Int J Mach Tools Manuf 45:1077–1084
Kang MC, Kim KK, Lee DW, Kim JS, Kim NK (2001) Characteristics of inclined planes according to the variations of cutting direction in high-speed ball-end milling. Int J Adv Manuf Technol 17:323–329
Toh CK (2004) Surface topography analysis in high speed finish milling inclined hardened steel. Precis Eng 28:386–398
Ng E-G, Lee DW, Dewes RC, Aspinwall DK (2000) Experimental evaluation of cutter orientation when ball nose end milling Inconel 718™. J Manuf Process 2:108–115
Tonshoff HK, Camacho JH (1989) Die manufacturing by 5- and 3-axes milling. J Mech Work Technol 20:105–119
Fuller KNG, Tabor D (1975) The effect of surface roughness on the adhesion of elastic solids. Proc R Soc Lond 345:327–342
Stachowiak GW, Batchelor AW (2001) Engineering tribology, 2nd edn. Butterworth, Heinemann
Buttle DJ, Moorthy V, Shaw B, Lord JD (2006) Determination of residual stresses by magnetic methods. NPL Meas Good Pract Guide No. 88. ISSN: 1368-6550
Brinksmeier E, Cammett JT, König W, Leskovar P, Peters J, Tönshoff HK (1982) Residual stresses — Measurement and causes in machining processes. Ann CIRP 31(2):491–510
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Nicola, G.L., Missell, F.P. & Zeilmann, R.P. Surface quality in milling of hardened H13 steel. Int J Adv Manuf Technol 49, 53–62 (2010). https://doi.org/10.1007/s00170-009-2382-3
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DOI: https://doi.org/10.1007/s00170-009-2382-3