Patent ID: 7997175

Claim:
A cutting method for cutting a workpiece, comprising: moving an endless band saw blade of a band saw machine by driving a control motor with a motor driver; oscillating a traveling speed of the band saw blade to cut the workpiece by outputting a pulsed signal having a frequency of about 100 Hz to the motor driver; and oscillating a cutting speed of the band saw blade with respect to the workpiece to cut the workpiece, wherein, when the band saw blade approaches the workpiece, the cutting speed of the band saw blade is set to a low cutting speed, during an initial stage of cutting, which occurs until the band saw blade comes in contact with the workpiece to cut the workpiece, the traveling speed of the band saw blade is set to a low speed by a rotation speed controller, and the traveling speed and the cutting speed are increased after the initial stage of cutting the workpiece, and are decreased before a final stage of cutting the workpiece.