GB816387A - Improvements in or relating to the manufacture of commutators for dynamo-electric machines - Google Patents

Improvements in or relating to the manufacture of commutators for dynamo-electric machines

Info

Publication number
GB816387A
GB816387A GB34702/57A GB3470257A GB816387A GB 816387 A GB816387 A GB 816387A GB 34702/57 A GB34702/57 A GB 34702/57A GB 3470257 A GB3470257 A GB 3470257A GB 816387 A GB816387 A GB 816387A
Authority
GB
United Kingdom
Prior art keywords
commutator
nozzle
abrasive
dynamo
nov
Prior art date
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
Application number
GB34702/57A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB816387A publication Critical patent/GB816387A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/14—Maintenance of current collectors, e.g. reshaping of brushes, cleaning of commutators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B24C3/322—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for electrical components

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

816,387. Abrasive blasting. GENERAL MOTORS CORPORATION. Nov. 7,1957 [Nov. 7, 1956], No. 34702/57. Class 60. A portion of the insulation between the individual metal segments of a commutator for a dynamo-electric machine is removed by means of afluid-carried abrasive ; the operation is performed after the commutator has been machined to a predetermined outer diameter and finish. An armature assembly includes a commutator 34 and a core 36 on which wire coils are wound, the ends of the coils being secured to the segments 38 of the commutator which are insulated from one another by mica or other insulating material ; the assembly is placed on a loading platform 30 and its shaft 40 is ducked between rods 41, 42 movable by air or hydraulic cylinders 24, 26, which are then actuated to move the assembly to the operating position. In this position the wire windings of the core 36 are pressed against a grommit 50 of elastomeric material held in a drive device 51 rotated by a belt 54 from an electric motor. An abrasive slurry, comprising 40 per cent. aluminium oxide 200-400 mesh and 60 per cent. water is supplied through nozzle 48 and projected against the commutator by steam at 150 p.s.i. supplied through nozzle 44. After the operation has been completed, any grit remaining on the commutator is removed by steam or air delivered through nozzle 46. A hood 56 is provided. The nozzle may be oscillated.
GB34702/57A 1956-11-07 1957-11-07 Improvements in or relating to the manufacture of commutators for dynamo-electric machines Expired GB816387A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US816387XA 1956-11-07 1956-11-07

Publications (1)

Publication Number Publication Date
GB816387A true GB816387A (en) 1959-07-15

Family

ID=22165405

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34702/57A Expired GB816387A (en) 1956-11-07 1957-11-07 Improvements in or relating to the manufacture of commutators for dynamo-electric machines

Country Status (1)

Country Link
GB (1) GB816387A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112296764A (en) * 2020-09-07 2021-02-02 湖北隐冠轴业有限公司 Surface roughness treatment method for front and rear shafts of new energy automobile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112296764A (en) * 2020-09-07 2021-02-02 湖北隐冠轴业有限公司 Surface roughness treatment method for front and rear shafts of new energy automobile

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