Cutting tool assembly and a cutting insert for use therein

A tool holder assembly comprising:

• a tool holder having an insert receiving pocket including a pocket base adapted to receive a cutting insert, a first bore formed in the pocket base and defining a longitudinal axis, and a second threaded bore formed in the tool holder which is oriented transversely to and is connected with the first bore;
• a coupling member having a body portion provided with a groove extending at least partially therealong, the body portion sized to fit into said first bore, the coupling member also having an end coupling portion provided with a plurality of spaced-apart radially extending abutment wings;
• and
• a screw configured and dimensioned to threadingly fit into said threaded bore;
• wherein
• upon insertion of the coupling member body portion into the first bore and insertion of the screw into the second bore, rotation of the screw in a first rotation direction causes the screw to engage the groove of the coupling member, thereby urging the coupling member in a first axial direction further into the first bore and rotating the coupling member.

A cutting tool assembly comprising:

• a tool holder having an insert receiving pocket including a pocket base adapted to receive a cutting insert, a first bore formed in the pocket base and defining a longitudinal axis, and a second threaded bore formed in the tool holder which is oriented transversely to and is connected with the first bore;
• a coupling member having a body portion provided with a groove extending at least partially therealong, the body portion being inserted into said first bore, the coupling member also having an end coupling portion projecting into the insert receiving pocket and being provided with a plurality of spaced-apart radially extending abutment wings;
• a screw configured and dimensioned to threadingly fit into said threaded bore;
• and
• a cutting insert formed with a through bore having spaced apart, peripherally located, radially directed support wings, the support wings configured and dimensioned to permit passage of the abutment wings therebetween, when the end coupling portion of the coupling member is inserted into the cutting insert's through bore;
• and wherein
• the cutting insert and the coupling member are movable from a first position in which the abutment wings are disposed between the support wings, to a second position in which abutment wings clampingly abut the support wings and bias the cutting insert in a first axial direction towards the pocket base.