Development of sawmill production in Russia. Tutorial

The history of the development of sawmill production of Russia from ax and Tes to the modern production of lumber is shown. The varietary -forming defects of wood and methods for determining the volume of wood entering the warehouse of raw materials of a sawmill enterprise are considered. The sorting lines of the warehouses of raw materials of woodworking enterprises are given. Skaren scanners with infrared emitters are shown single -plane, double -7ous, 3D laser scanners, x -ray scanners. The sorting lines of round timber produced by Russian enterprises using scanners are shown. A sawmill is considered using log scanning, and then a beam. The innovations are given when sawing the crowned logs, as well as curved logs. In the sawmill, angular round -fingered machines and ribbon -saw horizontal machines using numerical control technologies are used. An example of the preparation of the optimization and calculation of the rational post when sawing logs on a horizontal banded -saw machine was considered. Scanners for lumber, trimming machines and sorting lines with lumber with optimization system are considered. It is intended for students of forestry technical schools and colleges studying in the specialty “Technology of Forestering”, “Woodworking Technology”, “Technology of Comprehensive Wood processing”, teachers and specialists of the sawmill