Patent ID: 8652018

Claim:
A tool magazine for use in a machine tool, the tool magazine including: a guiding plate ( 10 ) including an annular groove ( 101 ) defined therein, wherein the annular groove ( 101 ) includes: a semi-circular section defined by a radius (R 1 ); and a semi-oval section defined by a semi-major axis (R 1 ) identical to the radius (R 1 ) of the semi-circular section and a semi-minor axis (R 2 ) shorter than the semi-major axis (R 1 ); the tool magazine further comprising: a turntable ( 11 ), including claws ( 112 ) extending from a periphery of the turntable; and holders ( 12 ) each pivotally connected to a related one of the claws ( 112 ), wherein each of the holders ( 12 ) includes an end for holding a tool ( 3 ) and another end formed with a ball ( 132 ) movably located in the annular groove ( 101 ) so that some of the holders ( 12 ), of which the balls ( 132 ) are located in the semi-circular section of the annular groove ( 101 ), are caused to pivot their respective tools to a position that is closer to a center axle of the turntable, while the other holders ( 12 ), of which the balls ( 132 ) are located in the semi-oval section of the annular groove ( 101 ), are caused to pivot their respective tools to a position that is further away from the center axle of the turntable.