CUTTING OPTIMIZATION LUMBER ON BLANKS FOR PARQUET BOARDS

Abstract

The most common malformations of
birch are knots, rot, and the curvature of the
false nucleus.
False heartwood not allowed in the
blanks always without any restrictions. This
area has a low permeability of the wood, the
tensile strength along the fiber toughness. In
birch false core easily crack. False heartwood
is resistant to rot less than the sapwood.
Since the size of the false nucleus depends on
the age of trees, it follows that the diameter
between the diameter of sawlogs and heartwood
correlation exists. Using data from the
bulkhead material was determined by the
dependence of the diameter of the heartwood
of the diameter of sawlogs in the butt.

The experimental results showed that
with decreasing length of the assortment of
„n“ time deflection also decreases by about
a „n“ time, that is, the value of the curvature
of the assortment, expressed in % change of
its length remains virtually unchanged. In
this case, increase the yield of blanks can
individual approach to cutting of timber.