European Journal of Scientific Research (ISSN: 1450 ... - EuroJournals

© European Journal of Scientific Research, Vol 7, No 5, 2005
Figure 2: screen printing of a cutting pressure raised following Y and the direction of machining
2.3 MEASURE DENSITY
The density is a determining factor of the aptitude of wood for the cutting pressure and
machining. A calculation of density and moisture was carried out and this in order to know the
physical values distending the statement of the efforts of elbow. Table 1.
Designation Average density Average moisture
143CNF 0,695 8,98
16 3N P2 0,577 8,61
16 1N P2 0,661 8,32
CH 10 NP 0,709 8,00
MDF 16 0,711 7,57
16 2N P2 0,716 8,27
The presence of a profile of density within the various panels is an important parameter of
heterogeneity which could influence the connections cutting pressures, density and surface
qualities.
2.4 MEASURE SURFACE QUALITIES
2.4.1 Experimental procedure
The control and the qualification of the surface quality become more and more a criterion of
workability, thanks in particular, to the technological progress made in the field of the design of
new machines to the advanced techniques of machining.
According to [ 6 ], a part never corresponds exactly to the drawing which was used to define the
geometrical form, even if it remains inside the geometrical tolerances imposed, it has defects of
which it is advisable to limit the sizes.
With regard to our step, the principal goal being to establish a relation between the parameters of