US2575705A - Dynamoelectric machine - Google Patents

Dynamoelectric machine Download PDF

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Publication number
US2575705A
US2575705A US183761A US18376150A US2575705A US 2575705 A US2575705 A US 2575705A US 183761 A US183761 A US 183761A US 18376150 A US18376150 A US 18376150A US 2575705 A US2575705 A US 2575705A
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United States
Prior art keywords
stator
pole
frame
plate
assembly
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US183761A
Inventor
John W Clokey
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CBS Corp
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Westinghouse Electric Corp
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Publication date
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Priority to US183761A priority Critical patent/US2575705A/en
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Publication of US2575705A publication Critical patent/US2575705A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core

Definitions

  • the around-the-frame winding- -connectionsforfthe coils maybe Vcompleted either Ebefore 'or after vthe cylindrical Vbending of 'the mounting-plate-usually after-and Ithen lthe salientepole assembly which is thus formed can be dipped and baked or otherwise treated to improve the insulationfandtested, before said assembly is inserted into the bore of the rigid statorframe, where it is secured in place by a suitable number of pole-bolts which pass in through the stator-frame.
  • My invention is particularly applicable to railroad-motors, for traction or auxiliary purposes, and it is particularly applicable to frames which are cylindrical in shape, although, theoretically, at least, my invention could be applied to noncylindrical frames.
  • the railroad or other user of the machine
  • Figure 1 is a perspective view of a part of a iiat exible mounting-sheet or plate, with some of the poles and coils underneath it;
  • Fig. 2 is a perspective View of the same thing, turned upside down;
  • Fig. 3 is an end-view of a drum which is used for winding the stator-insert into a cylindrical shape
  • Fig. 4 is an end-view of a completed rolled stator-insert
  • Fig. 5 is a fragmentary longitudinal sectional view of a traction-motor, showing my statorinserted in place in the machine.
  • the complete dynamo-electric machine comprises a salient-pole statormember 6, and a rotor-member 'i mounted for rotation therewithin. While my invention was designed, and is particularly adapted, for tractionmotors, it is obviously adapted to other types of dynamo-electric machines.
  • the rotor-member 'I is illustrated as being of a type having a commutator 8.
  • the stator-member 6 is made of two separable parts,
  • Vthe statorinsert consists of /a relatively thin vflexible Vmag- Ynetizable mounting-plate I5,1which encircles a plurality ofsalient'pole-pieces, which vmay include main poles Il and commutating-poles I8 which carry their usual coils IlC and I8C.
  • rlhe stator-pole assembly is then Wound or bent into a cylindrical shape (or other shape necessary to iit within the frame-opening I2).
  • Fig. 3 A convenient tool for assisting in this bending-operation is shown in Fig. 3 in the form of a hollow cylindrical drum 2
  • stator-coils I lC and I8C are provided with suitable around-the-frame winding-connections 24, which are made either before or after the bending operation-usually after said operation, in a large-sized machine in which the connections are quite sti.
  • stator-insert I I is now complete, as shown in Fig. 4. It can now be easily handled, both for completing the coil-connections 2li, and for any necessary dipping and baking for treating the insulation on the windings, and for all necessary testing, after which the finished stator-insert I I may be slipped into the bore I2 of the statorframe I Il, and secured in place by the pole-bolts I3 in the frame.
  • my invention makes it possible to assemble the various salient pole-pieces of the machine on a at plate I5, as shown in Figs. 1 and 2, thereby facilitating the assembling illustrated details of construction.
  • a motor having a damaged stator-winding can be easily repaired by removing the pole-bolts i3 and slipping the entire stator-winding assembly VH out of the frame I0, and inserting a new stator-winding assembly, while the old one is being repaired,
  • the ilexible mounting-plate l5 is quite thin. It is made of magnetizable material, so that it forms a part ofthe ux-carrying frame or yoke of the machine. Since this plate is quite thin, old motors which had their salient pole-pieces directly bolted to the heavy statorframe l0 can be converted to my new type by boring the old frames slightly oversize, in order to accommodate the new stator-winding assembly. This permits treating and testing the stator-winding assembly, independently of the frame.
  • a dynamo-electric machine having a salient-pole stator-member, and a rotor-member therewithin, said stator-member being characterized by having a substantially rigid frame having an axially extending opening therein, and a pole-assembly removably secured within said opening, said pole-assembly comprising a relatively thin flexible magnetizable mounting-plate, salient pole-pieces secured to said mountingvplate, coils carried by said pole-pieces, and
  • a removable pole-assembly for the statorframe of a dynamo-electric machine characterized by having a relatively thin flexible magnetizable mounting-plate, salient pole-pieces secured to said mounting-plate, coils carried by said pole-pieces, and around-the-frame windingconnections for said coils.

Description

Nov. 20, 1951 J. w. cLoKEY 2,575,705
DYNAMOELECTRIC MACHINE Filed Sept. 8, 1950 ATTO R N EY atented Nov. 2Q, 1951 UNITED IS TAT ES PATENT 0F *FICE DYNAMOELE CTRIC `MACHIN E John'W. Clokey; Pittsburgh,fP-a., assignorl tolWestinghouse'Electric Corporatioml-East `Pittslmrgh, fPa., al corporation. of Pennsylvania "Application September 8, 1950', Serial'NoLlSSJlGl My invention relates: tor-the stator-construction lindrical form. The around-the-frame winding- -connectionsforfthe coils maybe Vcompleted either Ebefore 'or after vthe cylindrical Vbending of 'the mounting-plate-usually after-and Ithen lthe salientepole assembly which is thus formed can be dipped and baked or otherwise treated to improve the insulationfandtested, before said assembly is inserted into the bore of the rigid statorframe, where it is secured in place by a suitable number of pole-bolts which pass in through the stator-frame.
My invention is particularly applicable to railroad-motors, for traction or auxiliary purposes, and it is particularly applicable to frames which are cylindrical in shape, although, theoretically, at least, my invention could be applied to noncylindrical frames. As a result of my invention, the railroad (or other user of the machine) can more quickly rewind a traction-motor, for example; and a repair-shop which is not fully equipped to wind and treat a large-sized frame might easily install a stator-insert in accordance with my invention.
An exemplary form of embodiment of my invention is illustrated in the accompanying drawing, wherein Figure 1 is a perspective view of a part of a iiat exible mounting-sheet or plate, with some of the poles and coils underneath it;
Fig. 2 is a perspective View of the same thing, turned upside down;
Fig. 3 is an end-view of a drum which is used for winding the stator-insert into a cylindrical shape;
Fig. 4 is an end-view of a completed rolled stator-insert, and
Fig. 5 is a fragmentary longitudinal sectional view of a traction-motor, showing my statorinserted in place in the machine.
As shown in Fig. 5, the complete dynamo-electric machine comprises a salient-pole statormember 6, and a rotor-member 'i mounted for rotation therewithin. While my invention was designed, and is particularly adapted, for tractionmotors, it is obviously adapted to other types of dynamo-electric machines. The rotor-member 'I is illustrated as being of a type having a commutator 8. In accordance with my invention, the stator-member 6 is made of two separable parts,
(CHIH-.252)
-opening I2 thereim preferably in the form rof a cylindrical bore. The youter periphery `of 'the Vstator-insert II has a coniigurationsuitable yfor *iittinglwithin said frame-opening rorbore I2, so
that thev stator-insert can beremovably" retained within theframe In by means of ypole-bolts I3 passinglradially through theA frame.
ln "accordance with vmy invention, Vthe statorinsertconsists of /a relatively thin vflexible Vmag- Ynetizable mounting-plate I5,1which encircles a plurality ofsalient'pole-pieces, which vmay include main poles Il and commutating-poles I8 which carry their usual coils IlC and I8C.
ln the initial assembly of my stator-insert II, the mounting-plate I 5 is flat, as shown in Figs. 1 and 2, and the salient pole-pieces Il and I8 are removably bolted thereto, With the coils in place, as shown at I9 in Fig. 1. rlhe stator-pole assembly is then Wound or bent into a cylindrical shape (or other shape necessary to iit within the frame-opening I2). A convenient tool for assisting in this bending-operation is shown in Fig. 3 in the form of a hollow cylindrical drum 2|, which preferably has outwardly extending threaded pins or bolts 22 therein, for engaging in corresponding poles 23 in the several commutatingpoles I8, as shown in Fig. 2, so as to assist in centering said commutating-poles, which are rela' tively narrow in a circumferential direction'. The pins 22 are then removed from the inside of the drum 2 I, so that the drum can be removed from inside of the cylindrically shaped salient-pole assembly.
As shown in Fig. 4, the stator-coils I lC and I8C are provided with suitable around-the-frame winding-connections 24, which are made either before or after the bending operation-usually after said operation, in a large-sized machine in which the connections are quite sti.
The stator-insert I I is now complete, as shown in Fig. 4. It can now be easily handled, both for completing the coil-connections 2li, and for any necessary dipping and baking for treating the insulation on the windings, and for all necessary testing, after which the finished stator-insert I I may be slipped into the bore I2 of the statorframe I Il, and secured in place by the pole-bolts I3 in the frame.
It will be noted that my invention makes it possible to assemble the various salient pole-pieces of the machine on a at plate I5, as shown in Figs. 1 and 2, thereby facilitating the assembling illustrated details of construction.
l more easily handled, in shops which are limited as to the maximum outer diameters of members which can be handled.
From the standpoint of the customer, a motor having a damaged stator-winding can be easily repaired by removing the pole-bolts i3 and slipping the entire stator-winding assembly VH out of the frame I0, and inserting a new stator-winding assembly, while the old one is being repaired,
In my invention, the ilexible mounting-plate l5 is quite thin. It is made of magnetizable material, so that it forms a part ofthe ux-carrying frame or yoke of the machine. Since this plate is quite thin, old motors which had their salient pole-pieces directly bolted to the heavy statorframe l0 can be converted to my new type by boring the old frames slightly oversize, in order to accommodate the new stator-winding assembly. This permits treating and testing the stator-winding assembly, independently of the frame.
While I have shown only a single illustrative form of embodiment of my invention, I wish it to be understood that I am not limited to the I desire,
4 therefore, that the appended claims shall be accorded the broadest construction consistent with their language.
I claim as my invention:
1. A dynamo-electric machine having a salient-pole stator-member, and a rotor-member therewithin, said stator-member being characterized by having a substantially rigid frame having an axially extending opening therein, and a pole-assembly removably secured within said opening, said pole-assembly comprising a relatively thin flexible magnetizable mounting-plate, salient pole-pieces secured to said mountingvplate, coils carried by said pole-pieces, and
around-the-frame Winding-connections for said coils, said mounting-plate fitting within lsaid Y opening in the frame.
2. The invention as dened in claim 1, characterized by said frame being cylindrical, and its opening being a cylindrical bore.
3. A removable pole-assembly for the statorframe of a dynamo-electric machine, characterized by having a relatively thin flexible magnetizable mounting-plate, salient pole-pieces secured to said mounting-plate, coils carried by said pole-pieces, and around-the-frame windingconnections for said coils.
4. The invention as defined in claim 3, characterized by said mounting-plate having a cylindrical shape.
JOHN W. CLOKEY.
No references cited.
US183761A 1950-09-08 1950-09-08 Dynamoelectric machine Expired - Lifetime US2575705A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416575A (en) * 1966-08-09 1968-12-17 Bobby R. Ellis Stator coiler
US3493801A (en) * 1967-01-18 1970-02-03 Oerlikon Maschf D.c. electrical machine
US4350914A (en) * 1977-08-17 1982-09-21 Vibrac Corporation Electric motor manufacture
DE102007024822B3 (en) * 2007-05-29 2009-01-29 Siemens Ag Stator assembling method for e.g. driving motor in motor vehicle, involves bending stator yoke with used wound stator teeth from elongated form to cylindrical form, and fastening together ends of stator yokes
WO2010025978A1 (en) * 2008-09-08 2010-03-11 Robert Bosch Gmbh Method for the production of a stator for an interior rotor electric motor
ITMI20090742A1 (en) * 2009-04-30 2010-11-01 Marsilli & Co PROCEDURE AND EQUIPMENT FOR THE CONSTRUCTION OF THE STATOR OF AN ELECTRIC MOTOR WITH AUTOMATIC ASSEMBLY OF THE VARIOUS POLES.
DE102022001814A1 (en) 2022-05-24 2023-11-30 Bernd Rickert Material and process for producing a stator for electric motors and generators

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416575A (en) * 1966-08-09 1968-12-17 Bobby R. Ellis Stator coiler
US3493801A (en) * 1967-01-18 1970-02-03 Oerlikon Maschf D.c. electrical machine
US4350914A (en) * 1977-08-17 1982-09-21 Vibrac Corporation Electric motor manufacture
DE102007024822B3 (en) * 2007-05-29 2009-01-29 Siemens Ag Stator assembling method for e.g. driving motor in motor vehicle, involves bending stator yoke with used wound stator teeth from elongated form to cylindrical form, and fastening together ends of stator yokes
WO2010025978A1 (en) * 2008-09-08 2010-03-11 Robert Bosch Gmbh Method for the production of a stator for an interior rotor electric motor
ITMI20090742A1 (en) * 2009-04-30 2010-11-01 Marsilli & Co PROCEDURE AND EQUIPMENT FOR THE CONSTRUCTION OF THE STATOR OF AN ELECTRIC MOTOR WITH AUTOMATIC ASSEMBLY OF THE VARIOUS POLES.
EP2246960A1 (en) * 2009-04-30 2010-11-03 Marsilli & Co. S.P.A. Method and apparatus for manufacturing the stator of an electric motor with automatic assembly of the several poles
DE102022001814A1 (en) 2022-05-24 2023-11-30 Bernd Rickert Material and process for producing a stator for electric motors and generators

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