| 摘要 |
The invention relates to a tool changer for machine tools, especially for milling machines, with a tool double gripper (50), which is attached at the free end of an axially displaceable and rotatably mounted shaft (42) and has two pliers-like tool holders (51, 52), with a drive motor (31), which is coupled kinematically with the shaft (52) for the linear and rotary movements of the tool double gripper (50) and with transmission means for converting the rotation of the motor shaft of the drive motor (31) into the linear and rotary movements of the tool double gripper (50), wherein the transmission means contain a worm gear (32, 33; 32', 33') driven by the drive motor (31), the worm gear drives a cam plate (33', 34), at the front end of which a lifting curve (55, 55') for the linear movement and a rotation curve (35, 35 ') are constructed, a driver (36, 36') in the rotation curve (35, 35') engages a rack and pinion drive (37, 38; 37', 38'), coupled rotationally with the shaft, and a driver (56, 56') of a pivoting linkage (57, 57'), translationally coupled with the shaft (42), engages the lifting curve (55, 55') and is guided by it. |
