Open AccessRESULTS OF EXPERIMENTAL STUDIES OF THE PROCESS OF CUTTING SOFT WOOD WITH DISC KNIVES
Author(s) -
Vladimir Ivanovskiy,
Nikolai Jujukin,
Kishvarsho Safarov
Publication year - 2021
Publication title -
lesotehničeskij žurnal
Language(s) - English
Resource type - Journals
ISSN - 2222-7962
DOI - 10.34220/issn.2222-7962/2021.3/7
Subject(s) - softwood , stamping , division (mathematics) , humidity , intensity (physics) , process variable , oblique case , materials science , process (computing) , engineering drawing , composite material , mechanical engineering , engineering , mathematics , computer science , optics , linguistics , philosophy , physics , arithmetic , thermodynamics , operating system
Stamping of softwood is still a poorly researched process of chipless division. The research on commercially available equipment was carried out. Multivariate experiments were held according to standard methods with the number of measurements from 20 to 150 using softwood including conifers. A computer was used to substantiate the obtained coefficients of the regression equations. The magnitude of external factors such as loading mode, duration and the introduction of plasticizers were studied. Exploratory experiments made it possible to accurately establish the magnitude of the external load during direct and oblique collapse, as well as the optimal deformation temperature. Moreover, the studies were carried out taking into account the different moisture content of the wood. Regression models for four factors with two outputs were obtained. Insignificant coefficients were excluded and further research of the influence of humidity, temperature, section size and shape of the work piece on the surface quality of stamped parts were carried out. As a result, the dependence of the magnitude of deformations in wood on load and temperature was built. Solving the optimization problem made it possible to identify the following parameters of the processes of stamping softwood: density within 400 kg/m3 and temperature 156 degrees Celsius