Automatic tool change device for printed circuit board machines.

摘要

The tool store (61) comprises a prismatic drum (62) having a number of cells (73) in which the tools (27) may be inserted singly or housed inside a magazine (29); and the tool change device (93) comprises a pair of clamps (101, 102) operated singly and fitted to the work table (14). The clamps (101, 102) are moved simultaneously in a direction perpendicular to the axis of the drum (62), for withdrawing or loading the tool (27) from/on to the drum (62) or spindle (26); the tool (27) being transferred between the drum (62) and spindle (26) by the work table (14); and a sensor (128) being provided for detecting the tip of the tool (27) inserted in the spindle (26) and so adjusting the axial position of the tool (27) in the spindle (26).