Adjustable torsion bar cartridge for face mills

A face mill comprising a milling tool body having a rotational axis and an end face extending generally transverse to the rotational axis;

• means forming an arcuate seat surface at the end face of the tool body;
• an cutter insert-support cartridge slidably positioned on said seat surface for rotary adjustment around the seat axis;
• said cartridge having a flat positioner face adapted to receive a cutter insert thereon;
• torsion bar means integral with said cartridge for biasing said cartridge in a first arcuate direction around the seat axis;
• and a manual adjustment means for biasing said cartridge in a second arcuate direction around the seat axis;
• said manual adjustment means comprising an adjustment screw extending into the tool body normal to the seat axis, said adjustment screw having a head overlying the flat positioner face of the cartridge whereby rotation of the adjustment screw enables said head to apply an adjusting force to the cartridge;
• said torsion bar means comprising at least one torsion element extending from the cartridge along the seat axis, and clamp screw means extending through each said torsion element into the tool body whereby one portion of the torsion element is anchored to the tool body and another portion of the torsion element is anchored to the cartridge.

A face mill comprising a milling tool body having a rotational axis and an end face extending generally transverse to the rotational axis;

• means forming an arcuate seat surface at the end face of the tool body;
• a cutter insert-support cartridge slidably positioned on said seat surface for rotary adjustment around the seat axis;
• said cartridge having a flat positioner face adapted to receive a cutter insert thereon;
• torsion bar means integral with said cartridge for biasing said cartridge in a first arcuate direction around the seat axis;
• and a manual adjustment means for biasing said cartridge in a second arcuate direction around the seat axis;
• said manual adjustment means comprising an adjustment screw extending into the tool body normal to the seat axis, said adjustment screw having a head that engages a slot int eh cartridge body whereby rotation of the adjustment screw enables said head to apply an adjusting force to the cartridge;
• said torsion bar means comprising at least one torsion element extending from the cartridge along the seat axis, and clamp screw means extending through each said torsion element into the tool body whereby one portion of the torsion element is anchored to the tool body and another portion of the torsion element is anchored to the cartridge.