DEVICE FOR THE PRECISE ANGULAR POSITIONING OF TOOL-HOLDERS SUITABLE FOR CNC MACHINES AND TOOL-HOLDERS EQUIPPED WITH SUCH DEVICE

摘要

A device for the precise angular positioning of tool-holders suitable for CNC machines, in particular tool-holders (10) motorised or non-motorised, comprising a front part (12) and an opposite rear part (14) and suitable to perform angular machining on multi-spindle and single-spindle CNC lathes, on transfer machines, milling centres and machine tools which perform machining by chip removal, comprises a plug (18) cooperating with a pair of pins (28), (30) arranged orthogonally relative to said plug and adjustable in rotation. Each of the pins (28), (30) comprises an offset cylindrical central portion (32), forming a cam which, by rotating, interacts with said pins to achieve said precise angular positioning of the tool-holders (10).