Rugosidad superficial y potencia de corte en el cepillado de Acacia melanoxylon y Sequoia sempervirens

Abstract

RESUMENEn el maquinado de madera, el cambio de las condiciones cinemáticas en el proceso de formación de viruta trae por consecuencia un cambio tanto en los esfuerzos de corte, como en el trabajo específico de corte, es decir, finalmente sobre la potencia de corte. Siendo en la práctica difícil hacer mediciones de esfuerzos de corte o de la energía específica en la línea de producción, el control de la potencia eléctrica de los motores es una realidad. El objetivo de esta investigación es evaluar el efecto del espesor medio de viruta sobre la potencia total de corte y la rugosidad resultante, y estimar el trabajo específico de corte en el proceso de cepillado para madera de Acacia melanoxylon (aromo) y Sequoia sempervirens (sequoia).Los resultados indicaron una buena correlación entre la potencia de corte y el espesor de viruta, requiriéndose mayor potencia de corte al incrementar la velocidad de avance del material. En cuanto a los resultados de rugosidad superficial, estos reflejaron los cambios del espesor de viruta. Además se obtuvo una mejor calidad superficial con la especie de mayor densidad.Palabras clave: Rugosidad superficial, potencia de corte, acacia, sequoia ABSTRACTIn wood machining, the chip formation process consequently brings a change in cutting forces, as well in the specific cutting energy, i.e., finally on the cutting power. Being in practice difficult the measure of cutting forces or the specific energy at the production line, monitoring the electrical output of the power unit is a reality. The aim of this research is to evaluate the change of the mean chip thickness over cutting power and the resulting surface roughness, estimating the specific cutting work on planing process for blackwood and redwood samples.The findings lead to conclude a good correlation between cutting power and chip thickness, requiring the cutting process more power when more feed speed is applied. For the surface roughness, the results presented changes with the chip thickness, and a better surface quality was found with the dense blackwood lumber.

The wettability and surface free energy of sawn, sliced and sanded european oak wood

“…It can give more efficient production by reducing the amount of waste during the production process. Cutting conditions clearly affect the cutting energy, cutting forces and consequently the quality of wood surface (Aguilera and Muñoz 2011, Aguilera and Zamora 2009, Thoma et al 2015. Thus, knowledge of the effects of different surfacing methods in order to improve the preparation of materials and enhance the coating adhesion is of great interest.…”

Effect of the anatomical structure, wood properties and machining conditions on surface roughness of wood

“…The wood properties that affect roughness are density, moisture content, texture and anatomical structure (Aguilera and Muñoz 2011, Magoss 2008, Gurau et al 2005. The most important factors in the machining process are the type of tool, the cutting angles, the degree of sharpness, speed, and the magnitude of the vibration of the machine bench (Aguilera andMuñoz 2011, Magoss 2008).…”

Evaluation of wood surface roughness depending on species characteristics

“…Cutting conditions clearly affect the cutting energy, cutting forces and consequently the quality of wood surface Muñoz 2011, Aguilera andZamora 2009). Surface roughness is strongly and directly linked or influenced by the future use of the wood material/element.…”