Patent ID: 7930963

Claim:
A workpiece cutting method utilizing a band-saw machine having an endless band-saw blade with a plurality of teeth having tooth tips, a pair of band-saw blade guides and a pair of vibration applying apparatuses, comprising: guiding the tooth tips of the endless band-saw blade with the pair of band-saw blade guides towards a workpiece so as to cut the workpiece; and applying vibrations to the band-saw blade, via the pair of vibration applying apparatuses, in a cutting direction where the band-saw blade approaches the workpiece in a manner such that the pair of vibration applying apparatuses simultaneously apply vibrations to the band-saw blade, and the tooth tips of the band-saw blade thereby simultaneously approach the workpiece in the cutting direction, wherein the band-saw blade approaches the workpiece at a speed not smoothly accelerated so as to cut the workpiece, and temporarily moves away from the workpiece at a speed not smoothly accelerated so as to remove cut chips from the workpiece, and a frequency of the vibrations is correlated to a running velocity of the band-saw blade, so that the lengths of chips generated by cutting the workpiece are approximately equal to a pitch of the teeth.