| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a drilling machine which performs drilling to obtain a smooth machining surface, while imparting relative eccentric motion between a drill and a material to be machined, by combining inexpensive components. <P>SOLUTION: This drilling machine performs drilling for a target material to be machined by transmitting rotary force of a driving motor 9 to a main spindle 23 and rotating the drill 7 mounted on the main spindle 23. The drilling machine has a base part relatively movable to a machining position in relation to the material to be machined. A rotation supporting body 22 rotatably supported on the base part is provided. The main spindle 23 is rotatably supported on the rotation supporting body 22. By driving driving motors 9 and 10, the rotation supporting body 22 and the main spindle 23 are rotated. An axial centerβ<SB>1</SB>of the rotation supporting body 22 and an axial centerα<SB>1</SB>of the main spindle 23 are arranged to be separated from each other in parallel with a prescribed space. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
