Orbital cutting apparatus capable of freely and selectively controlling plurality of cutting tools within rotating body by using rotational speed ratio

An orbital cutting apparatus that is capable of freely and selectively controlling a plurality of cutting tools within a rotary body using a rotational speed ratio, the orbital cutting apparatus comprising:

• a spindle rotating unit coupled to any one surface of a main body so as to rotate (C axis);
• a plurality of tool units coupled to reciprocate (X axis) toward a center of the spindle rotating unit on a front surface of the spindle rotating unit so as to cut a clamped material in an orbital manner;
• a relative movement unit coupled to the main body to be rotatable in synchronization with the spindle rotating unit, and configured to transmit a rotational power from the relative movement unit to the plurality of tool units so as to cause the plurality of tool units to reciprocate;
• each tool unit of the plurality of tool units includes a connection gear formed at an end of a driving shaft so as to be selectively engaged with the relative movement unit so as to receive the rotational power of the relative movement unit;
• an operation unit configured to cause one of the connection gears to be engaged with or be disengaged from the relative movement unit;
• and
• a control unit configured to control movements of the spindle rotating unit and the relative movement unit,
• wherein each of the connection gears are engaged with or disengaged from the relative movement unit as a result of being reciprocated on the end of the respective driving shaft by the operation unit so as to activate or deactivate a tool.