Devices and methods for positioning copper rods for the manufacture of electrical machines

Patent metadata

Field	Value
Publication number	US-11063501-B2
Application number	US-201716069116-A
Country	US
Kind code	B2
Filing date	Oct 23, 2017
Priority date	Oct 28, 2016
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

A positioning device may be used to peripherally position copper rods about a center axis that defines an axial direction. Each of the copper rods may be generally U-shaped and may have a first leg portion and a second leg portion. The positioning device may include a positioning body, a rotary body, locking means, and a rotary drive. Grooves of an outer peripheral surface of the positioning body may receive the first leg portions of the copper rods, which can be locked in place by the locking means. The rotary body may be rotatable about the positioning body and may include guide channels that receive the second leg portions of the copper rods. The rotary drive can cause the rotary body and the positioning body to rotate relative to one another, to pivot the second leg portions inwardly into the grooves of the positioning body.

First claim

What is claimed is:

1. A positioning device for peripheral positioning of copper rods about a center axis that defines an axial direction, the positioning device comprising:
a positioning body with an outer peripheral surface that is disposed concentrically about the center axis, the outer peripheral surface forming axially-running receiving grooves for receiving, respectively, first leg portions of the copper rods;
a rotary body that is rotatable coaxially about the positioning body, the rotary body forming guide channels that are open inwardly in a direction of the center axis, the guide channels for receiving, respectively, second leg portions of the copper rods, wherein the rotary body comprises a mounting disk and a rotary drive disk, wherein the guide channels are configured in the mounting disk of the rotary body;
locking means for holding each first leg portion in each axially-running receiving groove pivotably about a pivot axis parallel to the center axis; and
a rotary drive mechanism that imparts a rotation to the rotary body relative to the positioning body, in order to pivot the second leg portions in the guide channels inwardly in the direction of the center axis into the axially-running receiving grooves of the positioning body.

2. The positioning device of claim 1 wherein the guide channels are closed to an axial side of the rotary body.

3. The positioning device of claim 1 wherein the mounting disk and the rotary drive disk are disposed concentrically and axially adjacent to each other.

4. The positioning device of claim 1 wherein an axial end face, which faces the mounting disk, of the rotary drive disk forms an axial contact surface for the second leg portions in the guide channels of the mounting disk.

5. The positioning device of claim 1 wherein the rotary body is held rotatably by way of the rotary drive disk on a main body of the positioning device.

6. The positioning device of claim 5 wherein the locking means comprises a locking cage having axially directed stop bars, wherein the locking cage is mounted rotatably relative to the main body and the rotary drive disk.

7. The positioning device of claim 6 wherein the axially directed stop bars project in the axial direction between the positioning body and the mounting disk.

8. The positioning device of claim 6 wherein the locking cage comprises a number of the axially directed stop bars that corresponds to a number of the axially-running receiving grooves of the positioning body.

9. The positioning device of claim 8 wherein the axially directed stop bars project in the axial direction between the positioning body and the mounting disk.

Assignees

• Thyssenkrupp System Eng Gmbh
• Thyssenkrupp Ag

Inventors

• Walter Andreas

Classifications

• H02K15/0428 Primary

  Processes or apparatus for simultaneously twisting two or more hairpins · CPC title

• H02K15/02

  of stator or rotor bodies · CPC title