Patent ID: 7387600

Claim:
A machine tool comprising: a tool spindle assembly, a housing disposed beside said tool spindle assembly, a tool storage rack provided beside said tool spindle assembly and including a plurality of retainers disposed on an outer peripheral portion of said tool storage rack for attaching tool adapters, said tool storage rack including a shaft extended into said housing for rotatably attaching to said housing, a plate secured to said shaft and rotatably received in said housing and rotated in concert with said shaft for allowing said tool storage rack to be rotatably attached to said housing with said shaft, said plate including a plurality of rollers disposed thereon, an axle rotatably disposed in said housing and including a rotary member provided on said axle and rotated in concert with said axle, and said rotary member including a helical groove formed therein for engaging with said rollers and for rotating said plate and said shaft and said tool storage rack relative to said tool spindle assembly, and means for rotating said axle and said rotary member relative to said housing and to rotate said plate and said shaft relative to said housing.