Cutting machine

A cutting machine comprising:

• a rotary face plate which has a cut material passing hole at its center and is rotatably held on the center of the passing hole, and further, is provided with a rotating and driving motor for achieving rotation at a required angle;
• a swing arm which is pivotally supported at one end thereof on one side of the rotary face plate whereas, at the other end thereof, is swingably held between the outer peripheral side of the face plate and the inner circumferential side of the passing hole via the pivot;
• a rotating driving motor which is placed on the other side of the rotary face plate and transmits drive force via the pivot of the swing arm;
• and
• a swing motor which is placed on the other side of the rotary face plate and transmits swing force via the pivot of the swing arm,
• the swing arm, which pivotally supports the cutting rotary blade at the other end thereof and incorporates therein a mechanism for transmitting drive force from the rotating and driving motor, including:
• swing angle control means for varying the swing angle of the swing arm according to the dimensional shape of the cut material so as to bring the rotary blade into contact with the cut material when the cut material is cut;
• and
• rotational angle control means for rotating, at a required angle on its axis, the rotary face plate mounting thereon the swing arm for pressing the rotary blade against the cut material.