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Wpływ zmiany orientacji osi narzędzia oraz kierunku jego prowadzenia w obróbce powierzchni swobodnej na chropowatość powierzchni

Burek J., Rydzak T., Szajna A.

Mechanik

2018

R. 91, nr 8-9

684--686

Przedstawiono wpływ prowadzenia narzędzia wzdłuż krzywych parametrycznych tworzących powierzchnię swobodną oraz zmiany orientacji osi narzędzia na parametry chropowatości podczas obróbki wykończeniowej.

Presented is the effect of the direction of tool driving along parametric curves from a free surface and changes of the tool axis orientation on roughness parameters during finishing machining.

Variation cutting speed on the five axis milling

Boujelbene M., Moisan A., Bouzid W., Torbaty S.

Journal of Achievements in Materials and Manufacturing Engineering

2007

Vol. 21, nr 2

7-14

Purpose: The aim of this research is to make a study of the effective cutting speed variation in milling with a ball end tool. Then an experimental study of the effect of finishing strategies on surface texture, roughness is described. The material of a specific HB 300 pre-hardened mould steel Super Plast (SP 300). Design/methodology/approach: The methodology has consisted to determine cutting speed of each mode of tilt tool in five axes machining, and of proving a series of configurations and parameters combinations: cutting speed Vc, feed rate Vf, and tilt tool in multi-axis milling. Findings: This paper has investigated the effect of the tool orientation on the variation effective cutting speed, on the surface texture, while multi-axis milling. Experimental results have shown that disadvantages of three axes machining results from the existence of very low cutting speeds, even null when the tool axis is normal to the machined surface. This mode of machining generates a bad surface quality. Surfaces have a poor topography and important anisotropy. A suitable slope of the cutting tool by the means of the fifth machine tool axis, improves considerably work piece machined surface quality; Good micro-geometrical surface topography and lower surface roughness. Research limitations/implications: A possible future work would be the development of a general the phenomenal of the residual stress of the cutting on the five axis machining. The behavior of the residual stress studies are planed in the future. Practical implications: The relationship found between the effective cutting speed and surface texture work piece has an important practical implication since it allows selecting the best cutting condition combination from the points of view both the security and the economy for the established requirements in each case. Results are of great importance in for aerospace and automotive industry. Originality/value: The paper is original since the bibliographical review has allowed testing that, although works about these themes exist, none approaches the problem like it has been made in work.