CONTRIBUTIONS TO ESTABLISHING THE WORKING CAPACITY
OF BAND SAWS USED FOR BEECH LOGS CONVERSION
Part 3: Relations used for the capacity calculus

Nicolae I. ENE
Lecturer Dr. Eng. - „Transilvania” University of Brasov – Faculty of Wood Industry
Address: B-dul. Eroilor nr. 29, 500036 Brasov, Romania
Tel: 0040 268 412921/int.192. Fax: 0040 268 415315

Emilia-Adela SALCA
Lecturer Eng. - „Transilvania” University of Brasov – Faculty of Wood Industry
Address: B-dul. Eroilor nr. 29, 500036 Brasov, Romania
Tel:0040 268 412921/int.192. Fax: 0040 268 415315. E-mail: salca_emilia@yahoo.com

Abstract:
The conversion of logs into timber by using band saws takes place when these pass through the machine, one after other, with no regard to length and diameter (without any grading). Thus result pieces of different thicknesses from each log. This system determines a variable production capacity, from case to case, depending on wood species, length and diameter of the logs, number of kerfs applied to a log, feed speed etc.

According to the research work performed by specialists as mentioned in the references list and to some personal considerations, the authors were able to establish a calculus relation (in more variants) comprising the entire complex of factors which determine the capacity of a band saw used for beech logs conversion.This relation allows, by computer aid, a rapid identification, with an acceptable accuracy, of the capacity reserves of any type of conversion band saw and the way they can be used, in order to be highlighted under well-defined working conditions within a certain sawmill.

Key words: log band saw, conversion capacity, calculus relations, machining time.