FIELD: process engineering.
SUBSTANCE: invention relates to circulation saw. Circular saw gearshift mechanism throws in first and second rotary shafts arranged in parallel and first and second driving gears with different gear ratio. Every driving gear has engaged drive and driven gears integrated in single unit to transmit torque from the first rotary shaft to second one. Line of torque transfer via the first driving gear is considered as the first power transfer line. Line of torque transfer via the second driving gear is considered as the second power transfer line. Transfer line is switched over between first power transfer line and second line.
EFFECT: smooth control over circular saw cutting speed.
13 cl, 28 dwg
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