Patent ID: 7556457

Claim:
A drilling system comprising: a drilling machine comprising; an outer frame defining a fluid chamber section and having a compressed fluid inlet section in communication with fluid chamber section; a rotation shaft rotatably supported by the outer frame and formed with a fluid passageway in communication with the fluid chamber section, the rotation shaft having a front end to which a drilling tool is detachably attachable, the fluid passageway being opened at the front end, the rotation shaft having an axis; and a drill motor disposed in the outer frame and drivingly connected to the rotation shaft for rotating the rotation shaft about the axis, the drilling tool having a front end provided with a cutting edge and formed with a compressed fluid passage having one end opened to the front end for serving as a fluid ejection port and another end in communication with the fluid passageway when the drilling tool is attached to the rotation shaft; a compressor comprising: a compression unit that generates and stores a compressed fluid; and a connection section that connects the compression unit to the fluid inlet section for introducing the generated compressed fluid into the rotation shaft; a drill motor drive detection unit that detects a driving state of the drill motor; and a control unit that controls an amount of compressed fluid to be discharged from the compression unit based on the driving state of the drill motor detected by the drill motor drive detection unit; wherein the compression unit comprises: a fluid compression motor; a compressed fluid tank accumulating therein a compressed fluid generated by the fluid compression motor; and, a pressure detection unit that detects a pressure of stored compressed fluid, and the drilling system further comprising: a fluid compression motor control unit that controls a rotation of the fluid compression motor based on a pressure of compressed fluid detected by the pressure detection unit; and a drill motor control unit that controls a rotation of the drill motor based on a pressure of compressed fluid detected by the pressure detection unit.