Patent ID: 8974357
Filing Date: 2015-03-10
Classification: B23B,B23Q,Y10T

Abstract:
1. A vertical turret lathe having a work table holding a workpiece and rotating, a working head moving in X-axis and Z-axis directions, and a turret tool rest disposed on the working head within a machining area, the vertical turret lathe comprising: a tool holder disposed on a tool attachment portion on the turret tool rest, and an automatic tool changer apparatus disposed outside the machining area for automatically changing the tools on the tool holder, wherein the tool holder comprises a pair of mechanically operated pins, and a means for clamping or unclamping the tool via hydraulic pressure in response to the operation of the pins, and a pair of cylinders for operating the pins on the tool holder, wherein the automatic tool changer apparatus comprises a frame, a slide rail disposed on the frame and extending horizontally in a direction toward the machining area, an automatic tool changer unit moving on the slide rail and changing tools within the machining area, and a door for allowing the automatic tool changer unit to enter the machining area, and wherein the automatic tool changer unit comprises a turret-type tool magazine facing the tool holder for changing the tools, and the turret-type tool magazine further comprises a gripper for gripping the tool and a spring for biasing the gripper towards the closing direction.