OLDONI, A.; SPAGNOLO, R. T.; SILVEIRA, H. A. T.; MACHADO, A. L. T.; ESPÍRITO SANTO, A. C.; REIS, A. V.
Résumé:
: The no-till system sows without any previous soil movement. With the field operations the
tines, are worn out by abrasion, which causes changes in its geometry that can be expressed by mass or
area losses. The objective of this work was to develop a method to assess the wear of direct drills furrow
opener tips in respect of its mass loss, using the Solidwork 2003 software. The tips were made of
Austempered Ductile Iron (ADI), with a density of 0.0078g.mm-³ were used. After the work, the lower
end of the tips were cut out and weighed in a scale, with precision of 0,01g, in order to quantify their mass
in this region that, during the work, suffers the consuming due to the friction with the ground. With the
real measures of the tips made with a caliper, the tips were drawn in the software, in which we acquire the
volume, and with of the density of the material, the corresponding mass. Through the results it is verified
that it is possible to use this software for assessing the wear of tools that mobilize the ground, without
needing to cut out the end part of tines at each stage of work.
