(57) Abstract Objective As for not being a vibration-proof function disconnection operational midwayThe ku, with the serrated knife vibration-proof component the Drive side serrated knife guide component and trailing sideThere are no times when set position of the serrated knife guide component is restricted, tenAmount the shock prevention device of the serrated knife which can show vibration-proof function is offeredru. Constitution In Drive wheel 9 and trailing wheel 11 non edgeWith the band sawing machine which can begin the serrated knife 13 of condition to wind, disconnection path side CBeing similar, rear section 13of a serrated knife 13 facing toward edge side 13bThe pushing the serrated knife vibration-proof component 35 which it tries to overpower, disconnection area Z?And others at the off-position, at the same time, Drive wheel 9, the trailing wheel11 it provided at least on side of the wheel of one side.
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