Scientific Journal of KubSAU

The article presents a method of engineering calculation of the strength of band saws and belt force to stabilize the cut

The article presents the results of the studies necessary to conduct a comprehensive assessment of the status of occupational safety and make recommendations for keeping it in the given parameters, at machine-building plants, staffed by cut-off machine tools and auxiliary equipment for their operation. The necessity of the development of the structure of the OSH management system. We have presented a device with which you can carry out a qualitative assessment of the state of labor protection at the enterprises of mechanical engineering and the procedure for applying OSH audit system, which allows to identify the weakest points in the system of OSH management, based on the results of which form the management decisions to maintain it in the given parameters

In the article, the process of noise formation in a band-saw machine tool is described and the way of clearing of noise and vibration which productivity is confirmed with the experiments is offered

The article presents the results of experimental studies of band noise generation and multirip woodworking machines. The studies have shown that saw woodworking group, as well as metal, are general patterns in the formation of the spectral composition that allows to approach the development of practical recommendations to reduce sound pressure levels in the work area to the operators of sanitary norms. Of particular note is the fact that elevated levels of noise generated by the cutting tool. The effect of changes in process parameters, in particular, the depth of cut and feed to levels of noise generated by the tool. For example, increasing the depth of cut in half leads to an increase of sound pressure levels at 5.8 dB (theoretically obtained value is 6 dB), and supplying a halving of the sound pressure levels reduces by 5 dB. High enough for engineering purposes convergence of theoretical and experimental sound pressure levels and the fact that the calculated values above experimental, allows the calculation and design of the system to reduce the noise under consideration in the machine is, only in service but also in their design

The article presents the results of theoretical studies of noise cutting circular sawing machines. Practical calculation of the noise spectra is based on the determination of the dependency of the sound pressure of the noise sources of the object of study. In the sound system, circular sawing machines sound energy is emitted by the following sources: disc cutter and the mandrel. Therefore, the dominant noise sources should be allocated to the technological subsystem "tool – mandrel” with a bit less rigidity than the carrier system of the machine and directly receives the cutting forces when milling. Thus, it is possible to reduce sound pressure levels in almost two ways: by increasing absorption production facilities and (or) decrease in sound pressure of the noise source. In this work, we have justified the second way – reduction of the intensity of acoustic radiation of the source

Results of modeling of deformation of a band saw in a cutting zone are presented in article. Also the experiment by definition of deformation of a saw and loss of her stability has been made

The article presents the results of studies of dynamic phenomena caused by the process of cutting band saw and clarified the zones in which resonance occurs, which negatively affects the overall bandsaw

In this article, we have presented the results based on the experimental research of effort of giving and effort of cutting on a band-saw machine for new and already worn-out saws