Pylypchuk M. Розвиток науково-технічних основ забезпечування точності обробляння деревини на верстатах

The dissertation is devoted to the development of scientific and technical bases for ensuring the accuracy of woodworking by cutting and improvement of performance characteristics of woodworking machines. The laws of distribution of a set of random errors of wood processing on machines have been established and their adequacy has been confirmed. A mathematical model of parametric machine failure according to the criterion of technological accuracy has been developed, which makes it possible to establish the duration of periods of machine operation between the adjustments provided that the requirements for machining accuracy are met. The research methodology of accuracy of wood processing by creating simulation models in the form of applicable computer programs of error distribution regularity of processing and change of technological accuracy of machines during the interrepair period of work has been developed. Mathematical models of wood processing accuracy on sawing and milling machines have been developed. Their analysis allowed us to substantiate and develop recommendations for the increase of processing accuracy through selection of appropriate cutting modes. On the basis of theoretical and experimental studies new design solutions on the improvement of designs of machines and tools for sawing and milling of wood focused on the increase of accuracy of processing according to the requirements of the current standards have been developed. The main results of the paper are used in the design and operation of bandsaw, circular saw and base-type milling machines, in research and in the educational process.