US 12,647,006 B2Granted

Method for producing a rotor of an asynchronous machine

AssigneeInnomotics GmbH

InventorsKlaus Büttner, Klaus Kirchner, Matthias Warmuth

Life of this patent

Estimating the term…

Loading patent…

Abstract

A method for producing a rotor of an asynchronous machine includes providing a rotor lamination stack having grooves extending parallel to a rotor axis of the rotor, inserting conductor rods into the grooves such that the conductor rods protrude from end faces of the rotor lamination stack, wherein a twisting tool is placed at each of the end faces onto the protruding conductor rods and the twisting tools are twisted relative to each other, where the parallel grooves with the corresponding conductor rods also extend obliquely after the twisting and where the twisting tools are formed such that the protruding conductor rods remain parallel to the rotor axis when an oblique profile of the stack is produced, removing the twisting tools, providing first and second short-circuit washers, and axially pressing the short-circuit washers onto the conductor rods projecting perpendicularly from the end face of the rotor lamination stack.

Claims8

Dependent claims

A method for producing a rotor of an asynchronous machine, the method comprising:

providing a laminated rotor core with slots which extend parallel to a rotor axis of the rotor;
inserting conductor rods into the slots such that the conductor rods protrude from end faces of the laminated rotor core;
mounting a twisting tool onto the conductor rods so as to protrude from each of the end faces, twisting tools being twisted relative to each other, and parallel slots with respective conductor rods also extending in a skewed manner after the twisting has occurred, and the twisting tools being configured such that protruding conductor rods remain parallel to the rotor axis when a skewed core is produced;
removing the twisting tools;
providing a first and second short-circuiting disk;
and
axially force-fitting first and second short-circuiting disks without welding and soldering onto the conductor rods protruding perpendicularly from the end faces of the laminated rotor core, such that after the axial force-fitting, a first end of the protruding conductor rod aligns with the rotor axis and a second end of the protruding conductor rod extends parallel to the rotor axis at an offset position.

4 more elements

Dependencies are inferred from the claim text.