| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To attain simplification of the structure of a main spindle of a machine tool mounted with a cutting tool, in the cutting tool for cutting a surface of a hole and a peripheral edge of an opening part. <P>SOLUTION: In the cutting tool 1, on an approximately conical tool body 2 rotated around an axis O, a hole working tool 5 advanceable/retreatable in an axis O direction and a slide part 7 provided with a cutting blade insert 6 and made slidable in a generating line of a cone surface are rotatably provided so as to be integrated with the tool body 2. At the inside of the tool body 2, an approximately cylindrical coupling part 11 for advanceably/retreatably inserting a rear end part of a hole working tool 5 and a sleeve 12 for clamping this in the axis O direction is provided advanceably/retreatably in the axis O direction. The slide part 7 is interlocked with advancement/retreating of the coupling part 11 to be made slidable, and a projection part 12A projected to an outer side in a radial direction is formed on the sleeve 12 arranged at an inner side of the coupling part 11. Engagement parts 14, 16 abuttable with the projection part 12A in the axis O direction are formed on a distal end part and a rear end part of the coupling part 11 respectively. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
