US3841133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for shaping end turns of coils in dynamo-electric machine cores
Assignee: Westinghouse Electric Corp
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Filing: 1973-08-13
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Granted: 1974-10-15
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Expires: 1993-08-13
Abstract
Abstract A dynamoelectric machine core, such as a stator core, with coils located in core slots thereof is placed in fixed location on a center post within which there is an axially movable actuator that has at one end, proximate an end face of the core, shaping elements connected with the actuator and radially movable in accordance with the axial movement of the actuator for forcing end turns radially outward over the core end face. The shaping elements collectively have the general configuration of a cone whose apex receives a core whose end turns are to be shaped even though some end turns extend across the core bore. The lowermost set of end turns is shaped by the placement of the core on the post which has at its lower end an encircling member tapering out from the major cylindrical surface of the post while at the other end the shaping elements respond through movement of the actuator to open up and extend radially outward over the core end face.
Inventors
- 👤 K Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:52
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/20; H02K15/24; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/4902; Y10T29/49073; Y10T29/53; Y10T29/5313; Y10T29/53143; Y10T29/53161
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
131 words
Coil end turn shaping apparatus, for wound cores such as motor stators, comprising: means for locating a wound core in a fixed position; actuator means mounted to be axially movable in relation to said fixed position; shaping means connected with said actuator means and at least partially movable therewith for forcing end turns radially outward over an end face of a core upon a predetermined movement of said actuator means; said means for locating comprising a fixed cylindrical post; said actuator means comprising a member located axially within said post; and said shaping means comprising at least one element that has a first radial position when said axial member is in a first axial position and has a second radial position when said axial member is in a second axial position.
Claim 2
Dependent Claim
131 words
Coil end turn shaping apparatus, for wound cores such as motor stators, comprising: means for locating a wound core in a fixed position; actuator means mounted to be axially movable in relation to said fixed position; shaping means connected with said actuator means and at least partially movable therewith for forcing end turns radially outward over an end face of a core upon a predetermined movement of said actuator means; said means for locating comprising a fixed cylindrical post; said actuator means comprising a member located axially within said post; and said shaping means comprising at least one element that has a first radial position when said axial member is in a first axial position and has a second radial position when said axial member is in a second axial position.
Claim 3
Dependent Claim
26 words
The subject matter of claim 1 wherein: said post of said means for locating has a smooth external cylindrical surface on which a core slidably fits.
Claim 4
Dependent Claim
66 words
The subject matter of claim 1 wherein: said shaping means comprises a plurality of elements which when in said first radial position have exterior surfaces generally forming segments of a cone located within a volume that is an axial extension of said post and when in said second radial position at least portions of said exterior surfaces extending over the locus of a core end face.
Claim 5
Dependent Claim
89 words
Coil end turn shaping apparatus for mechanically shaping end turns of coils of a wound dynamoelectric machine core, which core has a hollow cylindrical configuration with axially extending coil slots extending within an inner core surface, comprising: a center post having an outer surface for location of a core thereon; a movable member within said center post and axially movable in relation thereto; a plurality oF end turn shaping members connected to said movable member and movable therewith to be moved radially outward upon axial movement of said member.
Claim 6
Dependent Claim
89 words
Coil end turn shaping apparatus for mechanically shaping end turns of coils of a wound dynamoelectric machine core, which core has a hollow cylindrical configuration with axially extending coil slots extending within an inner core surface, comprising: a center post having an outer surface for location of a core thereon; a movable member within said center post and axially movable in relation thereto; a plurality oF end turn shaping members connected to said movable member and movable therewith to be moved radially outward upon axial movement of said member.
Claim 7
Dependent Claim
45 words
The subject matter of claim 4 wherein: said end turn shaping members have exterior surfaces that form segments of a cone when said cylindrical member is in a first axial location and which pivot outwardly therefrom for forcing end turns over a core end face.
Claim 8
Dependent Claim
56 words
The subject matter of claim 5 wherein: said end turns shaping members each have a point of pivotal connection to said center post and a connecting member is pivotally joined to said movable member and to each said shaping member at a location toward the cone apex from said point of connection to said center post.
Claim 9
Dependent Claim
88 words
The subject matter of claim 4 wherein: said center post is fixed in a substantially vertical orientation; a member encircles said post proximate the lower end thereof and has an exterior surface that flares radially outward from said outer surface of said post toward the bottom thereof, said encircling member serving to force radially outward lower end turns on a core upon placement of the core on said post while said end turn shaping members are located for shaping end turns at the upper end of the core.
Claim 10
Dependent Claim
72 words
The subject matter of claim 4 further comprising: an additional plurality of end turn shaping members connected to said movable member and located radially outward from the location of said first mentioned plurality of end turn shaping members, and said additional plurality of members are movable with said movable member in a radially inward direction and act to limit outward movement of end turns initiated by said first mentioned plurality of members.
Claim 11
Dependent Claim
33 words
The subject matter of claim 4 wherein: the number of said plurality of end turn shaping members is at least equal to the number of pole groups of windings of the wound core.
Claim 12
Dependent Claim
162 words
Apparatus, for shaping the end turns of coils in a stator core for a dynamoelectric machine, comprising: a fixed frame; a cylindrical post supported by said frame in a substantially vertical direction; an actuator member located within said post and mounted for axial movement therein; a plurality of shaping elements, each of said shaping elements being pivotally joined to said post at the vertically upward end thereof, linkage means located between said elements and said actuator, said linkage means holding said elements uniformly in a radially inward position when said actuator is at a first position axially downward in said post, said elements shaped so that in said radially inward position they have exterior surfaces generally comprising segments of a cone whose base is at said post upward end and whose apex is vertically upward therefrom, said linkage means also holding said elements uniformly in a radially outward position when said actuator is at a second position axially upward in said post.
Claim 13
Dependent Claim
162 words
Apparatus, for shaping the end turns of coils in a stator core for a dynamoelectric machine, comprising: a fixed frame; a cylindrical post supported by said frame in a substantially vertical direction; an actuator member located within said post and mounted for axial movement therein; a plurality of shaping elements, each of said shaping elements being pivotally joined to said post at the vertically upward end thereof, linkage means located between said elements and said actuator, said linkage means holding said elements uniformly in a radially inward position when said actuator is at a first position axially downward in said post, said elements shaped so that in said radially inward position they have exterior surfaces generally comprising segments of a cone whose base is at said post upward end and whose apex is vertically upward therefrom, said linkage means also holding said elements uniformly in a radially outward position when said actuator is at a second position axially upward in said post.
Claim 14
Dependent Claim
19 words
The subject matter of claim 10 further comprising: means for moving said actuator between said first and second positions.
Claim 15
Dependent Claim
37 words
The subject matter of claim 11 further comprising a tapered member encircling said center post proximate the lower end thereof with an exterior surface that flares radially outward and down from said cylindrical surface of said post.
Claim 16
Independent Claim
133 words
A method of shaping the end turns of a cylindrical dynamoelectric machine stator core comprising the steps of: placing a wound stator core, whose end turns have not been shaped, on a fixed cylindrical post in a sliding fit; shaping the end turns at one end of the core by forcing them radially outward during the placing of the core on said post by applying force axially to the core until the core reaches a tapered outward member extending from the cylindrical surface of the post; actuating, after the core is placed and the end turns at one end have been shaped, an axially movable member within said center post to cause shaping elements to move radially outward at the other end of the core to shape the end turNs at that end.
Claim 17
Independent Claim
133 words
A method of shaping the end turns of a cylindrical dynamoelectric machine stator core comprising the steps of: placing a wound stator core, whose end turns have not been shaped, on a fixed cylindrical post in a sliding fit; shaping the end turns at one end of the core by forcing them radially outward during the placing of the core on said post by applying force axially to the core until the core reaches a tapered outward member extending from the cylindrical surface of the post; actuating, after the core is placed and the end turns at one end have been shaped, an axially movable member within said center post to cause shaping elements to move radially outward at the other end of the core to shape the end turNs at that end.
Claim 18
Dependent Claim
33 words
The subject matter of claim 13 further comprising: after said actuating, causing the return of the movable member and the shaping elements to their original positions and removing the core from the post.
Claim 19
Dependent Claim
21 words
The subject matter of claim 14 wherein: the placing of said core on said post is in a substantially vertical direction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |