Collet assembly of improved stability and collet thereof

A collet assembly of improved stability comprising:

• a collet having
• a containing space formed through the collet along an axial direction of the collet;
• a pin-receiving groove formed through the collet along a radial direction of the collet and communicating with the containing space;
• a connecting groove recessed on a first end surface of the collet along the axial direction of the collet and communicating with the containing space;
• and
• multiple receiving grooves recessed in the collet along the axial direction of the collet;
• an axial limiting assembly detachably mounted to the connecting groove of the collet and having
• an end cap detachably mounted to the connecting groove of the collet and having
• a containing hole formed through the end cap and communicating with the containing space of the collet;
• and
• two coolant holes formed through the end cap and communicating with the containing space of the collet;
• and
• an abutted element mounted to the containing hole of the end cap, and extending into the containing space of the collet;
• a cutter having
• a limiting groove recessed on the cutter and communicating with the pin-receiving groove of the collet and having an end surface disposed at one side of the limiting groove;
• and
• a mounting end abutting against the abutted element of the axial limiting assembly;
• a pin extending into the pin-receiving groove of the collet and abutting against the end surface of the limiting groove of the cutter;
• and
• multiple damping elements, each one of the multiple damping elements received in a respective one of the multiple receiving grooves of the collet.