Milling primarily involves cutting metal with a multi-edged rotating tool that executes programmed feed movements on a workpiece in almost any direction.

Modern CNC milling machines are increasingly used to make faces, holes, cavities, surfaces that were previously turned, threads, etc. From this it follows that the range of tool holders used in CNC milling machines has expanded enormously.

The most common milling machine tool holder is the one with interchangeable carbide inserts that face milling cutters have, and where the number of inserts they incorporate is variable according to the diameter of the milling cutter. These tool holders have an ISO taper coupling.

The best-known drilling tool holders are conventional drill chucks, suitable for holding cylindrical drill bits when there are not very strict requirements regarding tool deflection. In modern CNC drilling machines, precision drill chucks and collet holder adapters with collets are used that allow greater torque to be transmitted with less deviation. Quick change chucks are also used.

Bars with welded carbide inserts or changeable inserts are used for boring tools.

In tapping operations, tool holders with couplings with stiffness designed to compensate for differences between the designed thread pitch and the tap feed are used. They can also incorporate a hole to allow coolant to pass through the center of the stem.

High-productivity lathes use indexable carbide insert tool holders that are screwed to the tool holder. The most traditional lathes use integral tools with hard metal inserts welded on.

The type of operation and, to some extent, the size of the workpiece, determine the selection of the clamping system.

Insert holder types are defined by the position angle and the shape and size of the insert being used.

Milling primarily involves cutting metal with a multi-edged rotating tool that executes programmed feed movements on a workpiece in almost any direction.

Modern CNC milling machines are increasingly used to make faces, holes, cavities, surfaces that were previously turned, threads, etc. From this it follows that the range of tool holders used in CNC milling machines has expanded enormously.

The most common milling machine tool holder is the one with interchangeable carbide inserts that face milling cutters have, and where the number of inserts they incorporate is variable according to the diameter of the milling cutter. These tool holders have an ISO taper coupling.

The best-known drilling tool holders are conventional drill chucks, suitable for holding cylindrical drill bits when there are not very strict requirements regarding tool deflection. In modern CNC drilling machines, precision drill chucks and collet holder adapters with collets are used that allow greater torque to be transmitted with less deviation. Quick change chucks are also used.

Bars with welded carbide inserts or changeable inserts are used for boring tools.

In tapping operations, tool holders with couplings with stiffness designed to compensate for differences between the designed thread pitch and the tap feed are used. They can also incorporate a hole to allow coolant to pass through the center of the stem.