MECHANISM AND METHOD FOR INTRODUCING A WAVE WINDING FROM A PREFABRICATED WAVE WINDING MAT INTO STATOR SHEET METAL PACKET GROOVES

Abstract

A mechanism for introducing a wave winding from a prefabricated wave winding mat into a rotor- or stator body having a receiving device for receiving and holding the rotor- or stator body, and a feed device that feeds the wave winding mat to the receiving device. The receiving device further has an introduction device that can isolate the windings of the winding mat and introduce the same in the depth direction R of the grooves into the rotor or stator body.

Claims

1. A mechanism for introducing a wave winding from a prefabricated wave winding mat (2) into a rotor- or stator body (4), comprising: a receiving device (5) for receiving and holding the rotor- or stator body (4) in a fastening position; and a feed device (1) which feeds the wave winding mat (2) to the receiving device (4), wherein the receiving device (5) further comprises an introduction device which is designed to isolate windings (2a) of the wave winding mat (2) and to introduce the same in a groove depth direction (R), relative to the rotor- or stator body, into grooves (43) of the rotor- or stator body (4).

2. The mechanism according to claim 1, wherein the receiving device (5) is rotatable such that the receiving device (5) rotates the rotor- or stator body (4) in a direction of rotation (P1) about a longitudinal axis of the rotor- or stator body (4).

3. The mechanism according to claim 1, further comprising a servomotor for rotating the rotor- or stator body (4).

4. The mechanism according to claim 1, wherein the introduction device further comprises an isolating slide (53) which can be advanced toward a stator sheet metal packet in an advancing direction (S) which particularly runs at an angle to the groove depth direction (R) which is not 0.

5. The mechanism according to claim 1, wherein the introduction device further comprises a groove depth slide, in particular a radial slide (52), which can be advanced in the groove depth direction (R) to the rotor- or stator body (4), and which is designed to push the isolated windings (2a) into a groove (43) of the rotor- or stator body (4) by advancing in the groove depth direction (R).

6. The mechanism according to claim 1, wherein the introduction device further comprises a guide device (55, 56) which can be positioned over lateral edges (42) of the rotor- or stator body groove (43) which will be filled with windings, facilitating the introduction of the windings (2a) into the corresponding groove (43).

7. The mechanism according to claim 6, wherein the guide device comprises two sheet metal guide plates (55, 56) to be positioned in the region of the groove (43) which will be filled, in particular laterally of the groove (43) which will be filled.

8. The mechanism according to claim 1, further comprising a positioning device (51) which is designed to position the introduction device over a groove (43) of the rotor- or stator body (4) which will be filled.

9. The mechanism according to claim 1, further comprising a slot closure introduction device which is designed to close with a slot closure, in the axial direction of the groove (43) filled with windings.

10. The mechanism according to claim 1, wherein the groove depth direction (R) is the radial direction of the rotor- or stator body (4).

11. The mechanism according to wherein the rotor- or stator body (4) is a rotor- or stator sheet metal packet, in particular as a stator sheet metal packet.

12. A method for producing a stator by introducing windings (2a) of a wave winding mat (2) into the grooves (43) of a rotor- or stator body (4), in particular using a mechanism according to claim 1, wherein the method comprises the following steps: furnishing a rotor- or stator body (4) with grooves (43, 43*) formed as recesses on an inside or outside of the rotor- or stator body (4), having a groove depth direction (R) and a groove longitudinal direction (X); moving a wave winding mat (2) toward the side of the rotor- or stator body (4) equipped with grooves (43); and successively introducing windings, by a) isolating a winding (2a) or a plurality of windings (2a), b) subsequently introducing the winding (2a) or the plurality of windings (2a) into a groove (43) via an introduction device (5), c) after introduction of the winding(s) (2a) into a groove (43), rotating the rotor- or stator body (4) and the introduction device (5) relative to each other, and d) carrying out steps a), b), and c) again.

13. The method according to claim 12, further comprising finally closing off the grooves (43) filled with windings (2a) with slot closures.

14. The method according to claim 12, further comprising using a rotor- or stator sheet metal packet, in particular a stator sheet metal packet, as the rotor- or stator body (4).

15. The method according to claim 13, further comprising using a rotor- or stator sheet metal packet, in particular a stator sheet metal packet, as the rotor- or stator body (4).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The invention is explained in more detail below with reference to FIGS. 1 and 2.

[0033] FIG. 1 shows an exemplary mechanism according to the invention, in perspective view.

[0034] FIG. 2 shows a view of a rotor- or stator body in the region of the introduction device.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0035] A feed device 1 via which a wave winding mat (also referred to below as mat) 2 is fed to the rotor- or stator body 4 is included in the mechanism shown in FIG. 1. The given illustration shows a receiving device 5, onto which the rotor- or stator body 4 can be pushed (in particular by the transfer device 3 in this case), then fixed on the receiving device 5. After fixing on the receiving device 5, the particularly annular or disk-shaped rotor- or stator body can be rotated about the machine axis A in a rotational direction P1. This is preferably done via a rotary drive, not shown in detail, in particular a servomotor.

[0036] The introduction device 50 is arranged on the receiving device 5; it can also be arranged separately therefrom. The given example shows an internally grooved rotor- or stator body 4 (shown particularly as a stator body in this case); however, the mechanism, and most of all the method according to the invention, can also be used with externally grooved rotor- or stator bodies. In this case, the introduction device 50 would not be included on the inner edge of the rotor- or stator body 4 (as shown), but on the corresponding outer edge. The direction a marks the groove longitudinal direction of the grooves, which preferably, but not necessarily, runs parallel to the direction X of the machine axis A.

[0037] The introduction process illustrated schematically in FIG. 2, for introducing windings 2a of the mat 2, consequently applies to rotor- or stator bodies 4 with inside and outside grooves 43. The grooves 43 of the rotor- or stator body 4 are constructed between groove walls 41, 42. Between two adjacent walls 41, 42, a groove 43 runs in the groove depth direction R (this can be the radial direction of the rotor- or stator body, but need not necessarily be) and in the groove longitudinal direction a, which is preferably parallel to the direction X of the machine axis. In the example shown, the rotor- or stator body can be rotated in direction P1 about the machine axis A.

[0038] In the example shown, the mat 2 has two superimposed windings 2a, but can also have more or fewer windings 2a. In particular, the mat can consist of only one layer of windings. The introduction of the windings 2a by means of the introduction device 50 is illustrated here by way of example. The introduction process is shown at a point in time when two windings are introduced into the groove 43. Windings 2a have already been introduced in the groove 43 traveling ahead in the direction of arrow P1.

[0039] The introduction device 50 initially isolates, via an isolating device 53, the windings or winding group 2a which will be introduced at this point from the remaining, not yet introduced windings 2a of the mat. For this purpose, the isolating device is preferably designed to be able to advance in the direction of the rotor- or stator bodyin the illustrated example, as a slide 53 with a sliding direction S running at an angle to the groove depth direction R. The approach of the slide in direction S toward the rotor- or stator body holds back the windings 2a which will not yet be introduced, such that they cannot move to a position over the groove 43 which will be filled. Only the windings which will be introduced into the groove 43 are above the groove opening at this point in time. So that they can be introduced into the groove 43 in the groove depth direction R, the introduction device 50 has an element which can (also) be moved in the groove depth direction R, in particular a groove depth slide 52, which presses the winding 2a into the groove 43 after the isolation process. This process is repeated until all windings of the mat are introduced into grooves.

[0040] To facilitate the introduction, two aids can be provided as an alternative or as a supplement to each other.

[0041] On the one hand, the insertion of the isolated windings 2a can be facilitated with guide elements 54, 55, 56. The guide elements are usually sheet metal guide plates 55 and 56 which are placed in the region of the groove borders so that the windings 2a are not damaged on the sharp-edged borders 41, 42 when they slide into the groove 43. There is preferably a sheet metal guide plate 56 which can be advanced in the groove depth direction, and a further sheet metal guide plate 55 which runs obliquely or along a curve, and which is supported on a wedge element 54 arranged on the introduction device 50 so that a manner of hopper feed is created in which the winding slides over the sheet metal plate 55 and meets the sheet metal plate 56, such that the winding 2a is guided precisely into the groove 43 which will be filled, where it can then be pressed into the groove 43 by the element 52.

[0042] A positioning device 51 can be provided as the second mentioned aid. This has the purpose of positioning the introduction device 50, in particular the element 52, precisely above the groove 43 which will be filled. This can occur in such a manner that the positioning device 51 is included as a further groove depth slide arranged on the introduction device 50, which engages in one of the grooves which will be filled, preferably the leading groove 43, and thereby ensures a defined position of the introduction device before the isolation process and the introduction of the winding 2a into the groove 43.

[0043] The mechanism described and the method described are able to simplify and automate the introduction of wave winding mats 2 into rotor- or stator bodies 4.