Grooving tool holders are various types. Face grooving, internal grooving, parting holder grooving tools are single point machining operations use on lathes, cnc automatic machines, or machining centers.
Face grooving
With face grooving operations the tool is fed axially rather than radially toward the end surface of the workpiece. The tool must be adapted to the radial curve of the groove and the blade is therefore curved. When the machine spindle rotates in a counter-clockwise direction, a right-hand version of the tool is used and a left-hand version is used when the machine spindle rotates clockwise. So that both insert and toolholder fit into the groove, both the outer and inner diameters of the groove must be considered.
Internal grooving
The main problem with internal grooving is chip evacuation. There is a very high risk of chip jamming which can result in tool breakage, especially when machining small diameters. The chips have to be removed from the groove then change direction 90 degrees and pass the side of the toolholder to finally be removed from the hole.
