US3566727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for electric motor armatures
Assignee: Kollmorgen Corp
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Filing: 1969-07-18
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Granted: 1971-03-02
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Expires: 1989-07-18
Abstract
Abstract The method of, and punching press for, forming conductor pattern stampings for electric motor armatures. Metal blanks are clamped to a drive shaft by a universal clamp which eliminates eccentricities in rotation. The blanks are indexed and punched at a succession of stamping positions to remove metal between adjacent conductor segments. Alignment holes are punched into the blank at selected stamping positions to establish a flip line used in subsequent assembly operations. The motor armatures are assembled using at least two identical stampings oriented by the alignment holes and the flip lines, bonding the aligned stampings to a dielectric disc, and welding aligned tabs of the stampings to form the armature interconnections.
Inventors
- 👤 Bert Weiss
- 👤 Ronald Morino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:29
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/26; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0524; Y10T83/0577; Y10T83/101; Y10T83/444; Y10T83/4607; Y10T83/869; Y10T83/8759; Y10T83/8821; Y10T83/8828; Y10T83/8831
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
139 words
A method of making conductor patterns for electric motor armatures comprising: indexing a metal blank through a predetermined number of punching positions; punching said blank at each of said punching positions to form an armature conductor pattern by removing the metal between adjacent conductor segments; punching at least two alignment holes in said blank while at selected ones of said stamping positions; said alignment holes being at the same radial distance from the center of said conductor pattern and being located in the scrap area outside said conductor pattern; and said alignment holes having predetermined positions relative to said pattern so that the perpendicular bisector of the line passing through the centers of a pair of alignment holes provides a flip line passing through the center of said conductor pattern suitable for orientating conductor patterns forming multiple layer armatures.
Claim 2
Independent Claim
139 words
A method of making conductor patterns for electric motor armatures comprising: indexing a metal blank through a predetermined number of punching positions; punching said blank at each of said punching positions to form an armature conductor pattern by removing the metal between adjacent conductor segments; punching at least two alignment holes in said blank while at selected ones of said stamping positions; said alignment holes being at the same radial distance from the center of said conductor pattern and being located in the scrap area outside said conductor pattern; and said alignment holes having predetermined positions relative to said pattern so that the perpendicular bisector of the line passing through the centers of a pair of alignment holes provides a flip line passing through the center of said conductor pattern suitable for orientating conductor patterns forming multiple layer armatures.
Claim 3
Dependent Claim
34 words
The method according to claim 1 including punching at least three alignment holes so located that lines passing through the centers of said alignment holes form a polygon symmetrical relative to said flip line.
Claim 4
Dependent Claim
29 words
The method according to claim 2 including punching at least four alignment holes so located that lines passing through the centers of said alignment holes form an isosceles trapezoid.
Claim 5
Independent Claim
129 words
A method of making conductor pattern stampings for two-layer electric motor armatures comprising: indexing a metal blank through a predetermined number of punching positions; punching alignment holes in said blank while at a selected plurality of punching positions, the perpendicular bisector of a line passing through the centers of a pair of alignment holes being the flip line for the conductor pattern; and punching said blank at each of said punching positions to form the armature conductor pattern by removing the metal between adjacent conductor segments, said conductor pattern including an annular array of generally radially extending conductor segments having connection tabs at the ends thereof, said conductor pattern being so oriented relative to said alignment holes that said connection tabs are symmetrically disposed relative to said flip line.
Claim 6
Independent Claim
129 words
A method of making conductor pattern stampings for two-layer electric motor armatures comprising: indexing a metal blank through a predetermined number of punching positions; punching alignment holes in said blank while at a selected plurality of punching positions, the perpendicular bisector of a line passing through the centers of a pair of alignment holes being the flip line for the conductor pattern; and punching said blank at each of said punching positions to form the armature conductor pattern by removing the metal between adjacent conductor segments, said conductor pattern including an annular array of generally radially extending conductor segments having connection tabs at the ends thereof, said conductor pattern being so oriented relative to said alignment holes that said connection tabs are symmetrically disposed relative to said flip line.
Claim 7
Independent Claim
149 words
A method of making conductor pattern stampings for four-layer electric motor armatures comprising; indexing a metal blank through a predetermined number of punching positions; punching alignment holes in said blank while at a selected plurality of punching positions, the perpendicular bisector of a line passing through the centers of a pair of alignment holes being the flip line for the conductor pattern; and punching said blank at each of said punching positions to form the armature conductor pattern by removing the metal between adjacent conductor segments, said conductor pattern including an annular array of generally radially extending conductor segments including connection tabs at the inner and outer ends thereof, said conductor pattern being so oriented relative to said alignment holes that said outer connection tabs are symmetrically disposed relative to said flip line and displaced from flip line symmetry by an angular distance one-quarter that between adjacent outer tabs.
Claim 8
Independent Claim
149 words
A method of making conductor pattern stampings for four-layer electric motor armatures comprising; indexing a metal blank through a predetermined number of punching positions; punching alignment holes in said blank while at a selected plurality of punching positions, the perpendicular bisector of a line passing through the centers of a pair of alignment holes being the flip line for the conductor pattern; and punching said blank at each of said punching positions to form the armature conductor pattern by removing the metal between adjacent conductor segments, said conductor pattern including an annular array of generally radially extending conductor segments including connection tabs at the inner and outer ends thereof, said conductor pattern being so oriented relative to said alignment holes that said outer connection tabs are symmetrically disposed relative to said flip line and displaced from flip line symmetry by an angular distance one-quarter that between adjacent outer tabs.
Claim 9
Dependent Claim
31 words
The method according to claim 5 wherein said conductor pattern is also so oriented relative to said alignment holes that said inner tabs are symmetrically disposed relative to said flip line.
References Cited (Backward Citations)
US1670648A
Cited
US3450918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |