Abstract

CIFUENTES, Andrés F.  and  CORDOBA-NIETO, Ernesto. Influence of dynamic geometric parameters on multi-axis machining processes. Dyna rev.fac.nac.minas [online]. 2020, vol.87, n.215, pp.214-220.  Epub Jan 15, 2021. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v87n215.90417.

By means of experimental, geometric and simulation models, roughness values of third and fourth order deviations are determined. The simulation environment is developed from the integration and simulated verification (ISV) in software NX 11 and the geometric approximations are validated through the analysis confocal microscopy.

An experiment design is carried out to determine the influence of the dynamic geometric factors: transverse feed (Ae), lead angle and tilt angle, with a flat end milling tool with 1 mm diameter. In the experiment a 3 k factorial model is presented to specify the factor with the greatest influence on the roughness. As a result, an optimum (minimum) roughness value is obtained. The lead angle has a moderate influence. Fourth order deviations are associated with the feed per tooth, with a constant angular speed of 5,000 rpm.

Keywords : roughness; lead; tilt; transverse feed; design of experiments; simulation; ISV.

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