Issue №4, Vol. 22
Starodubov A., Platonov A., Afonichev D. Energy consumption during longitudinal sawing of timber on a machine with an asynchronous electric drive for the band saw apparatus // Resources and Technology. 2025. №4, Vol. 22. P. 78‒92.
DOI: 10.15393/j2.art.2025.8863
Energy consumption during longitudinal sawing of timber on a machine with an asynchronous electric drive for the band saw apparatus
| Starodubov Alexander | Voronezh State University of Forestry and Technologies named after G.F. Morozov, alexoldoak@mail.ru |
| Platonov Alexey | Voronezh State University of Forestry and Technologies named after G.F. Morozov, aleksey66@yandex.ru |
| Afonichev Dmitriy | Voronezh State Agrarian University named after Emperor Peter the Great, dmafonichev@yandex.ru |
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Key words: band saw machine band saw apparatus saw belt cutting speed resistance to movement of the saw belt asynchronous electric motor power efficiency factor |
Summary: The article provides analytical dependencies of the cutting speed and operating power of the asynchronous electric drive of the band saw apparatus on the resistance to movement of the saw belt, which take into account the nominal torque and slip of the electric motor, ensuring high accuracy of calculations in the operating modes of the asynchronous electric drive of the band saw apparatus that are close to the nominal modes and characterized by minimal power losses. The calculations performed showed that an increase in the resistance to the movement of the saw blade from 100 N to 400 N leads to a slight decrease in the cutting speed from 30.46 m/s to 29.18 m/s, which is only 1.28 m/s or 4.2 %. At the same time, the working capacity of the asynchronous electric drive of the band saw machine increases almost fourfold from 3206.25 W to 12285.46 W, the power loss in the electric motor increases, the power consumed from the electrical network increases, and the stator current increases, and the actual values of the overload factor and the set temperature of the electric motor of the band saw machine drive increase. The efficiency of the electric motor is maximum when the resistance to moving the saw belt is within 150…250 N, which is due to the low percentage of power loss from the electricity mains. Thus, when the resistance to movement of the saw blade is 100 N, the loss rate is 14.05 %; when it is 150 N, the loss rate is 12.36 %; when it is 200 N, the loss rate is 12.19 %; when it is 250 N, the loss rate is 12.63 %; and when it is 300 N, the loss rate is 13.37 %. The most efficient use of the Spectrum-70 band saw machine with the AIRM132S4 saw belt drive electric motor is possible when the resistance to the movement of the saw belt is 150…250 N, and the stator current is slightly higher than the rated current of the motor or lower than the rated current, which ensures reliable power supply. When the actual overload factor is greater than one, the operating time of the electric motor and, consequently, the band saw machine is limited. The higher the actual overload factor, the shorter the operating time of the machine. The Spectrum-70 band saw machine with the AIRM132S4 saw belt drive electric motor can be used with saw belt resistance up to 400 N. |
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