TOOL TURRET DRIVING DEVICE FOR CNC LATHE

摘要

The present invention relates to a tool turning drive of a CNC lathe, in which a fast rotation of a turret for selecting a tool and a precise positioning of the tool are performed only by clamping of an internal piston without lifting the spindle, using a servo motor as a driving means. In the tool turning drive of the CNC lathe, which rotates the turret using the hydraulic index motor as the driving force and determines the working position of the tool installed in the turret by lifting the spindle by the piston, the servomotor at the rear of the body is driven. The main gear and the three driven gears are engaged with each other, and a positioning means portion for determining the correct working position of the tool installed in the turret by the operation of the inner peripheral surface hydraulic pressure of the third driven gear is installed. The pressurized oil flows in from the oil passage and the flow path formed through the positioning means. Clamping port, and has a port and unloading clamping, a shaft coupled with the shaft in the center of the turret and arranged from a center zone formed such that sliding engagement features.