| 摘要 |
Mechanism for loosening the clamp of a tool holder in the socket of the extendable pin of a spindle, characterized in that it consists of a hydraulic cylinder (1) mounted in a hole in the rear wall of a bracket (2) with axial sliding made possible by springs (3) mounted on special screws (4) screwed into the wall of the bracket (2), while in the front part of the cylinder (1) is a sleeve (5) with a fragment of a screw groove (15) interacting with a peg (6), whose end runs in the splineway (16) of the cylinder (1) causing angular rotation of the sleeve (5) while a piston (7) is prevented from rotating in the cylinder (1), and secured by a special sleeve (8) and snap ring (9), and also of a sleeve (10) connected permanently to the rear part of the pin, inside which is a rod (11) and having external splines, while sleeve (5) has carved grooves (17) to enable sleeve (10) to move out without collision to an appropriate distance with respect to sleeve (5) during movement of the pin of the spindle to a position for tool exchange at the unloaded bracket (2), and also of a cover (12) fastened with screws (13) to the cylinder (1).<IMAGE>
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