Name
Chukarin Alexander Nikolaevich
Scholastic degree
•
Academic rank
professor
Honorary rank
—
Organization, job position
Don State Technical University
Web site url
—
Articles count: 4
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