Rotor having slanted angle side surface and laminations made therewith

A product, comprising:

• a rotor disk having a central body portion and having a through hole formed therein, and a plurality of spaced apart teeth extending radially from the central body portion, wherein each tooth of the plurality of teeth includes an elongated stem portion having a first end at the central body portion, and wherein the elongated stem portion extends radially to a second end terminating at a transverse portion, the transverse portion having a general arch shape and extending in a first direction from a first side edge of the stem portion and extending in an opposite second direction from a second side edge of the stem portion, a first end of the transverse portion having a first side face that is not formed at a 90-degree angle with respect to a top face of the rotor disk or a bottom face of the rotor disk and a second end of the transverse portion having a second side face that is not formed at a 90-degree angle with respect to the top face or the bottom face, transverse portions of adjacent teeth forming a gap therebetween;
• and
• a first stamping tool having a first elongated projection received in the gap, the first elongated projection having a first side face formed at an angle which is not 90 degrees with respect to a top face of the first stamping tool, the first elongated projection having a second side face which is formed at an angle perpendicular to the top face of the first stamping tool.

A method comprising:

• providing a rotor disk having a central body portion and having a through hole formed therein, and a plurality of spaced apart teeth extending radially from the central body portion, wherein each tooth of the plurality of teeth includes an elongated stem portion having a first end at the central body portion, and wherein the elongated stem portion extends radially to a second end terminating at a transverse portion, the transverse portion having a general arch shape and extending in a first direction from a first side edge of the stem portion and extending in an opposite second direction from a second side edge of the stem portion, a first end of the transverse portion having a first side face that is formed at a 90-degree angle with respect to a top face of the rotor disk or a bottom face of the rotor disk and a second end of the transverse portion having a second side face that is formed at a 90-degree angle with respect to the top face of the rotor disk or the bottom face of the rotor disk, transverse portions of adjacent teeth forming a gap therebetween;
• providing a first stamping tool having a first elongated projection having a first side face formed at an angle which is not 90 degrees with respect to a top face of the first stamping tool, the first elongated projection having a second side face formed at an angle perpendicular to the top face of the first stamping tool;
• trimming, using the first stamping tool, the first side face of the transverse portion so that a trimmed first side face forms an angle with the top face of the rotor disk or bottom face of the rotor disk that is not 90 degrees;
• and
• trimming, using the first stamping tool, the second side face of the transverse portion so that the trimmed second side face of the transverse portion forms an angle with the top face of the rotor disk or bottom face of the rotor disk that is not 90 degrees.