Abstract
Peripheral milling of wood with up milling and down milling techniques is very well known from a geometrical point of view. However, in processing anisotropic materials such as wood, these geometrical aspects imply relevant differences when machining. In fact, milling of anisotropic material leads to different cutting geometries when up- or down-milling and when increasing or decreasing the depth of cut resulting in different grain orientations depending on the adopted process. In this paper, tests performed when processing Douglas Fir with different depths of cut and grain orientations are described. The cutting forces were measured, and the dependence of the cutting forces with respect on the cutting geometry are analysed and discussed.
Zusammenfassung
Die geometrischen Aspekte beim Umfangfräsen mittels Gleichlauf- und Gegenlauffräsung sind weitgehend bekannt. Allerdings treten bei der Zerspanung von anisotropen Materialien wie z. B. Holz erhebliche Unterschiede auf. Tatsächlich führt das Fräsen von anisotropen Materialien beim Gleichlauf- und Gegenlauffräsen sowie bei einer Erhöhung oder Reduzierung der Frästiefe zu unterschiedlichen Schneidgeometrien, was in Abhängigkeit des angewandten Verfahrens zu einem unterschiedlichen Winkel zur Faserrichtung führt. Diese Studie berichtet über Ergebnisse von Untersuchungen an Douglasienholz mit unterschiedlichem Faserverlauf, das mit unterschiedlichen Frästiefen bearbeitet wurde. Die Beziehung zwischen den gemessenen Zerspankräften und den Schneidgeometrien wurde untersucht und beschrieben.
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References
Coch P (1972) Utilization of the southern pines Vol.2 U.S. Department of Agriculture-Forest Service
Costes JP, Lim Ko P, Ji T, Decés-Petit C, Altintas Y (2002) Orthogonal cutting mechanics of maple: modelling a solid wood-cutting process. J Wood Sci 50–1:28–34
Cyra G, Tanaka C (2000) The effects of wood fiber directions on acoustic emission in routing. Wood Sci Technol 34:237–252
Eyma F, Meausoone PJ, Martin P (2003) Two original methods to calculate precisely cutting forces involved during routing (90–0) Proc 16th Int Wood Machin Sem
Eyma F, Méausoone PJ, Martin P (2004) Study of the properties of thirteen tropical wood species to improve the prediction of cutting forces in mode B. Ann For Sci 61:55–64
Eyma F, Méausoone PJ, Larricq P, Marchal R (2005) Utilization of a dynamometric pendulum to estimate cutting forces involved during routing. Comparison with actual calculated values. Ann For Sci 62:441–447
Fischer R, Gottlöber C (2003) Basics in the optimisation of wood cutting in the example of peripheral milling. Proc 16th Int Wood Machin Sem
Fischer R (2004) Micro processes at cutting edge – Some basics on machining wood. Proc 2nd Int Symp Wood Machin
Franz NC (1958) An analysis of the wood cutting process. PhD. Thesis. University Michigan, Ann Arbor
Goli G, Bleron L, Marchal R, Uzielli L, Negri M (2002) Surfaces formation and quality, in moulding wood at various grain angles. Initial results with Douglas fir and oak. Proc Conf Wood Struc Prop
Goli G, Marchal R, Uzielli L, Negri M (2003) Measuring cutting forces in routing wood at various grain angles. Study and comparison between up and down-milling techniques, processing Douglas fir and oak. Proc 16th Int Wood Machin Sem
Goli G, Marchal R, Uzielli L, (2004a) Classification of wood surface defects according to their mechanical formation during machining. Proc 2nd Int Symp Wood Machin
Goli G, Uzielli L (2004b) Mechanisms of wood surface formation and resulting final condition after planing. Proc 2nd Int Symp Wood Machin
Goli G, Fioravanti M, Sodini N, Jiangang Z, Uzielli L (2005) Wood Processing: a contribute to the interpretation of surface origin according to grain orientation. Proc 17th Int Wood Machin Sem
Goli G, Fioravanti M, Marchal R, Uzielli L (2009): Up-milling and down-milling wood with different grain orientations – theoretical background and general appearance of the chips. Eur J Wood Prod 67(3):257–263
Kivimaa E (1950) Cutting force in woodworking. State institute for Technical Research, VTT Publication No. 18
Koch P. (1972) Utilization of the southern pines Vol. II. US Dep Agricult-Forest Service
Juan J (2000) Comment bien usiner le bois. CTBA
McKenzie WM (1960) Fundamental aspects of the wood cutting process. Forest Prod J 10:447–456
McKenzie WM (1961) Fundamental aspects of the wood cutting process. PhD. Thesis University Michigan Ann Arbor
McKenzie WM, Franz NC (1964) Inclined or oblique wood cutting. Forest Prod J 14:555–566
McKenzie WM, Cowling RL (1971a) A factorial experiment in transverse plane cutting of wood – Part I. Cutting force and edge wear. Wood Science 3(4):204–213
McKenzie WM, Cowling RL (1971b) A factorial experiment in transverse plane (90/90) cutting of wood – Part II. Chip formation. Wood Science 4(1):55–61
Mori M (1969) An analysis of cutting work in peripherial milling of wood. I On the work done by a knife in up-milling parallel to wood grain. Mokuzai Gakkaishi 15:93–98
Mori M (1970) An analysis of cutting work in peripherial milling of wood. II The cutting force, power and energy requirements in up-milling parallel to wood grain. Mokuza Gakkaischi 16:1–9
Mori M (1971a) An analysis of cutting work in peripherial milling of wood. III Variation of cutting force in inside cutting of wood with router-bit. Mokuzai Gakkaishi 17:437–442
Mori M (1971b) An analysis of cutting work in peripherial milling of wood. IV The power requirements in inside cutting of wood with router-bit. Mokuzai Gakkaishi 17:443–448
Negri M, Goli G (2000) Qualità delle superfici lavorate del legno di Abete rosso e di Douglasia valutata con una opportuna classificazione visuale. Legno Cellulosa Carta 6(1):10/21
Palmqvist J, Lenner M, Gustafsson SI (2005) Cutting forces when up-milling in beech. Wood Sci Technol 39:674–684
Piao SY, Fukui H (1984) Specific cutting-force in the machining of wood I. Dependence on rake and clearance angles and effect of chip thickness. Mokuzai Gakkaishi 30:359–367
Santochi M, Giusti F (2000) Tecnologia meccanica e studi di fabbricazione. Casa Editrice Ambrosiana
Stewart HA (1971) Chip formation when orthogonally cutting wood against the grain. Wood Sci Tecnol 3(4):193–203
Stewart HA (1969) Effect of cutting direction with respect to grain angle on the quality of machined surface, tool force components, and cutting friction coefficient. Forest Prod J 19(3):43–46
Woodson GE, Koch P (1970) Tool forces and chip formation in orthogonal cutting of loblolly pine. Department of Agriculture-Forest Service research paper SO-52
Yoshihara H, Ohta M (2000) Estimation of the shear strength of wood by uniaxial-tension tests of off-axis specimens. J Wood Sci 46:159–163
Zompì A, Levi R (2003): Tecnologia Meccanica. Lavorazioni ad asportazione di truciolo, UTET Libreria
Acknowledgements
We would like to acknowledge the group UGV (Usinage Grande Vitesse) of the ENSAM Cluny for the help with the CNC router and the dynamometric platform that made this work possible.
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Goli, G., Fioravanti, M., Marchal, R. et al. Up-milling and down-milling wood with different grain orientations – the cutting forces behaviour. Eur. J. Wood Prod. 68, 385–395 (2010). https://doi.org/10.1007/s00107-009-0374-5
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DOI: https://doi.org/10.1007/s00107-009-0374-5