Multiple spindle machine tool

摘要

{PG,1 A plurality of multiple spindle toolheads are stored in a carousel-type toolhead magazine on top of a machine tool which includes a toolhead driver for driving any selected one of the toolheads. The toolhead driver is mounted for movement along a Z axis toward and away from a worktable. A rotary toolhead changer arm for transferring toolheads from the toolhead magazine to the toolhead driver and vice versa is mounted on the machine for rotation about an axis which is inclined at an angle of 45{20 {0 to the Z axis. The toolhead changer arm has two diametrically opposed ends which are each inclined at an angle of 45{20 {0 to the rotary axis of the toolhead changer arm. Clamps are mounted on both ends of the toolhead changer arm for clamping toolheads thereto. When the toolhead changer arm is rotated through 180{20 , one end moves a toolhead from a position adjacent to the toolhead driver to a position adjacent to the toolhead magazine while the other end moves a toolhead from a position adjacent to the toolhead magazine to a position adjacent to the toolhead driver.