Rotor of a dynamo-electric rotary machine, dynamo-electric machine having a rotor, and method for producing the rotor

A rotor of a dynamo-electric rotary machine, said rotor comprising:

• a rotor core arranged in concentric relation to a rotor axis and including slots which are filled with electrically conductive material;
• a front ring arranged in concentric relation to the rotor axis at a front axial end of the slots and comprising electrically conductive material;
• a rear ring arranged in concentric relation to the rotor axis at a rear axial end of the slots and comprising electrically conductive material, wherein at least one member selected from the group consisting of the front ring and the rear ring includes a surface facing away from the rotor core and having at least partially a bevel in an axial direction from an outer circumference to an inner circumference of the member with the bevel defined by a bevel angle having a value of 3° to 30°;
• and
• a support element designed to at least partially connect to the member with a positive fit, said support element being pressed onto the member axially and supported on a shaft, said support element having a radial end which terminates at a radial end of the member wherein the surface of the member includes a first region having a first part-bevel in the axial direction from the outer circumference to the inner circumference of the member, with the first part-bevel defined by a first part-bevel angle, and a second region having a second part-bevel in the axial direction from the outer circumference to the inner circumference of the member, with the second part-bevel defined by a second part-bevel angle which differs from the first part-bevel angle.

A method for producing a rotor said method comprising:

• filling with electrically conductive material slots of a rotor core in concentric arrangement to a rotor axis;
• depositing electrically conductive material at a front end and a rear axial end of the slots to form a front ring and a rear ring using a shaping device such that at least one member selected from the group consisting of the front ring and the rear ring has a surface which faces away from the rotor core and which is at least partially given a bevel in an axial direction from an outer circumference to an inner circumference of the member with the bevel defined by a bevel angle having a value of 3° to 30°;
• pressing a support element axially onto the member with the support element being supported on a shaft and with a radial end of the support element terminating at a radial end of the member;
• and
• shaping the surface of the member with a first region having a first part-bevel in the axial direction from the outer circumference to the inner circumference of the member, with the first part-bevel defined by a first part-bevel angle, and a second region having a second part-bevel in the axial direction from the outer circumference to the inner circumference of the member, with the second part-bevel defined by a second part-bevel angle which differs from the first part-bevel angle.

A method for producing a rotor, said method comprising:

• filling with electrically conductive material slots of a rotor core in concentric arrangement to a rotor axis;
• depositing electrically conductive material at a front end and a rear axial end of the slots to form a front short-circuiting ring and a rear short-circuiting ring using a shaping device such that at least one member selected from the group consisting of the front short-circuiting ring and the rear short-circuiting ring has a surface which faces away from the rotor core and which is at least partially given a bevel in an axial direction from an outer circumference to an inner circumference of the member, with the bevel defined by a bevel angle having a value of 3° to 30°;
• and
• pressing a support element axially onto the surface of the member, with the support element being supported on a shaft and with a radial end of the support element terminating at a radial end of the member.