Device for the precise angular positioning of tool-holders suitable for CNC machines and tool-holders equipped with such device

A device for the precise angular positioning of tool-holders suitable for CNC machines, the device comprising a front part and an opposite rear part, the device further including a plug cooperating with a pair of pins arranged orthogonally relative to said plug and adjustable in rotation;

• wherein a first portion of the plug is inserted in a blind hole formed in the front part of the tool-holder, and a second portion of the plug is inserted in a correspondingly aligned blind hole formed in a front area defining an embossed plate positioned on the rear part of the tool-holder;
• and
• wherein the embossed plate of the rear part of the tool-holder has an upper surface in which a pair of bored holes are formed and have equal diameters and depths, said pair of bored holes extending vertically in said embossed plate and orthogonally relative to the plug, the pair of bored holes extending a depth exceeding beyond a diameter of the plug, and wherein the pair of pins is rotatably inserted in the pair of bored holes.