| 摘要 |
PROBLEM TO BE SOLVED: To provide a drilling device capable of ensuring sufficient drilling accuracy while avoiding enlargement of an installation space and the cost increase of the device. SOLUTION: The drilling device 1 is constituted so that a motor 17, a spindle 18 rotationally driven by the motor 17, and a drill 20 rotationally driven by the spindle 18 are respectively disposed in a cabinet 2 and the drilling with the drill 20 can be executed for a printed board 10 in the cabinet 2, and the drilling device 1 is equipped with a cooling device 4 for supplying a cooling medium to the motor 17 and the spindle 18 to cool down. The drilling device 1 is equipped with a heat exchanger 5a which is arranged in the cabinet 2, inputs the cooling medium supplied from the cooling device 4 and cool down in the inside of the cabinet 2. COPYRIGHT: (C)2009,JPO&INPIT
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