Method and apparatus for single press resilient rotor mounting assembly

A method of fabricating a rotor mounting assembly for vibration damping, said method comprising the steps of:

• coupling a first resilient ring to a spacer by interlocking a spacer to the first resilient ring;
• simultaneously coupling a second resilient ring to the spacer by interlocking the spacer to the second resilient ring;
• attaching a plurality of magnets to the spacer;
• and
• simultaneously pressing the first resilient ring and the second resilient ring onto a rotor shaft including an axis, subsequent to completing said steps of coupling, simultaneously coupling and attaching a plurality of magnets, said step of simultaneously pressing including inserting at least one press pin through the second resilient ring to press on the first resilient ring and the second resilient ring simultaneously and pressing the first resilient ring and the second resilient ring from one axial direction.

A method of fabricating a resilient ring for a rotor mounting assembly, said method comprising the steps of:

• punching a plurality of center blanks from a plurality of stator laminates;
• punching a plurality of outer ring laminates from the plurality of center blanks, each outer ring laminate having a central bore;
• laminating the outer ring laminates to form an annular ring having a center axis within the central bore;
• punching a plurality of insert laminations from the plurality of center blanks, the insert laminations each including at least one aperture and a central bore;
• laminating the insert laminations to form an inner metal insert having a central axis within the central bore;
• positioning the inner metal insert coaxially within the annular ring;
• and
• inserting a resilient insert between the annular ring and the inner metal insert, such that the resilient insert abuts and frictionally engages both the annular ring and the inner metal insert.

A rotor mounting assembly for an electric motor having a rotor core and a rotor shaft extending through the rotor core, said assembly comprising:

• a spacer having a distal end and a proximate end;
• a first resilient ring attached to said distal end, said first resilient ring having an internal face;
• and
• a second resilient ring attached to said proximate end, said second resilient ring having an internal side, an external side, and at least one aperture therethrough configured such that a press pin can press against said first resilient ring internal face, said rotor mounting assembly positioned on said rotor shaft.

A motor comprising:

• a motor housing comprising a pair of end shields and a shell;
• a stator assembly positioned within said motor housing and comprising a stator core and a stator bore extending there through, said stator core comprising a plurality of stator windings;
• and
• a rotor assembly positioned within said stator bore, said rotor assembly comprising a rotor mounting assembly, a plurality of magnetic elements attached to said rotor mounting assembly, and a rotor shaft extending through said rotor mounting assembly and said end shield, said rotor mount assembly comprising a laminated spacer, a first resilient ring, and a second resilient ring, said spacer including a distal end and a proximate end, said first resilient ring attached to said distal end, said first resilient ring comprising an internal face and a central bore receiving said rotor shaft, and said second resilient ring attached to said proximate end, said second resilient ring comprising a second central bore receiving said rotor shaft, an internal side, an external side, and at least one aperture therethrough configured such that a press pin can press against said first resilient ring internal face.