GB1442372A - Method of punching sheet metal pieces having substantially annular sector shape - Google Patents

Method of punching sheet metal pieces having substantially annular sector shape

Info

Publication number
GB1442372A
GB1442372A GB4636573A GB4636573A GB1442372A GB 1442372 A GB1442372 A GB 1442372A GB 4636573 A GB4636573 A GB 4636573A GB 4636573 A GB4636573 A GB 4636573A GB 1442372 A GB1442372 A GB 1442372A
Authority
GB
United Kingdom
Prior art keywords
strip
press
edge
punch
feeding
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
GB4636573A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB1442372A publication Critical patent/GB1442372A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/06—Making more than one part out of the same blank; Scrapless working
    • 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
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/05—With reorientation of tool between cuts
    • 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
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0505—With reorientation of work between cuts
    • Y10T83/051—Relative to same tool
    • 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
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y10T83/0577—Repetitive blanking
    • 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
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6582—Tool between tandem arranged work carrying means
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8742—Tool pair positionable as a unit
    • 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
    • Y10T83/00—Cutting
    • Y10T83/889—Tool with either work holder or means to hold work supply
    • Y10T83/896—Rotatable wound package supply

Abstract

1442372 Punching ALLMANNA SVEN ELEKTRISKA AB 4 Oct 1973 [5 Oct 1972] 46365/73 Heading B3W Two rows of blanks 6 of annular sector shape, having first and second curved edges 10, 9 corresponding respectively to the inner and outer peripheries of the annulus and two radial edges 7, 8 which subtend an angle at the centre of the annulus of between 40 and 80 degrees, are punched from metal strip, the width of which is greater than the radius of the first curved edge 10 and less than twice the radius of the second curved edge 9, by first feeding the strip through a punch press with tools shaped to the blank profile and with a cutting edge corresponding to one of the radial edges parallel to and almost coincident with one edge of the strip. Blanks are punched successively from half the width of the strip and the remaining strip width 13 is coiled and fed again through the punch press with the cutting edge referred to now parallel to, and almost coinciding with, the opposite edge of the original strip. This is done either by feeding the coil through the press again from the same side or feeding it from the discharge side after turning the punch through 180 degrees. The scrap portion 18 produced in the first punching operation is severed by a scrap cutter 19. The press includes feed rolls 17 and it is preferably a portion of the press comprising only the punch tools (3), (4) Fig. 1, not shown the rolls 17 and the cutter 19 which is turnable. Loop sag indicators (16) and (20) precede and follow the press and a brake device (21) subjects the strip portion 13 to tension, inducing in the strip tensile stress of more than 5 per cent of the stress at the elastic limit of strip of between 0À20 and 0À60 mm. thickness.
GB4636573A 1972-10-05 1973-10-04 Method of punching sheet metal pieces having substantially annular sector shape Expired GB1442372A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE12828/72A SE367138B (en) 1972-10-05 1972-10-05

Publications (1)

Publication Number Publication Date
GB1442372A true GB1442372A (en) 1976-07-14

Family

ID=20296382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4636573A Expired GB1442372A (en) 1972-10-05 1973-10-04 Method of punching sheet metal pieces having substantially annular sector shape

Country Status (8)

Country Link
US (1) US3854355A (en)
JP (1) JPS4972792A (en)
BR (1) BR7307736D0 (en)
CH (1) CH569529A5 (en)
DE (1) DE2347484C3 (en)
FR (1) FR2201935B1 (en)
GB (1) GB1442372A (en)
SE (1) SE367138B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2513055B2 (en) 1990-02-14 1996-07-03 日本電装株式会社 Method for manufacturing semiconductor device
GB2283133B (en) * 1993-10-20 1998-04-15 Gen Electric Dynamoelectric machine and method for manufacturing same
DE19634723C2 (en) * 1996-08-28 1999-08-12 Feintool Int Holding Process for producing and layering components, and an apparatus therefor
JP2000343144A (en) * 1999-06-04 2000-12-12 Denso Corp Manufacture of press molding
FR2835977B1 (en) * 2002-02-11 2004-07-02 Leroy Somer Moteurs METHOD AND MACHINE FOR MANUFACTURING A MAGNETIC CIRCUIT OF AN ELECTRIC MACHINE
JP4330420B2 (en) * 2003-10-10 2009-09-16 株式会社三井ハイテック Iron core manufacturing method and iron core manufacturing apparatus
GB201320484D0 (en) * 2013-11-20 2014-01-01 Cummins Generator Technologies Manufacturing a stator for a rotating electrical machine
CN105107960A (en) * 2015-09-28 2015-12-02 湘潭电机股份有限公司 Die for punching double fan-shaped punching plates on automatic punching line
CN106077230A (en) * 2016-07-29 2016-11-09 西安泰富西玛电机有限公司 A kind of dc motor yoke biplate compound press tool device
CN109731984B (en) * 2019-01-21 2020-10-02 台州迪邦科技有限公司 Auxiliary punching system of stator punching die

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR449465A (en) * 1912-10-16 1913-02-27 Paul Scholz Stamping punch for lids of cans or others
US1469757A (en) * 1921-09-30 1923-10-02 Edward L Sibley Mfg Company In Blanking-out eyelets
US3113741A (en) * 1959-06-17 1963-12-10 Herr Equipment Corp Strip handling
US3431806A (en) * 1966-05-19 1969-03-11 Compo Shoe Machinery Corp Die-cutting machine with rotatable die-supporting platen

Also Published As

Publication number Publication date
DE2347484C3 (en) 1980-09-18
SE367138B (en) 1974-05-20
JPS4972792A (en) 1974-07-13
FR2201935A1 (en) 1974-05-03
CH569529A5 (en) 1975-11-28
BR7307736D0 (en) 1974-08-15
DE2347484B2 (en) 1980-01-10
DE2347484A1 (en) 1974-04-11
US3854355A (en) 1974-12-17
FR2201935B1 (en) 1979-04-27

Similar Documents

Publication Publication Date Title
GB1343003A (en) Apparatus for fastening overlying sheets
GB2032812A (en) Manufacturing part-annular washers with radial tabs
GB1442372A (en) Method of punching sheet metal pieces having substantially annular sector shape
GB914793A (en) Apparatus for cutting out blanks from sheet metal
GB1417744A (en) Method and apparatus for longitudinally dividing webs
GB1389626A (en) Apparatus for manufacturing leaf springs having tapered end portions
JPH08300061A (en) Steel plate punching method
ES8802279A1 (en) Method for the production of a double collar and a workpiece with a double collar obtained by this method
US3834211A (en) A method of manufacturing multiple parts from a workpiece
GB1159588A (en) Method and Machine for Forming Paper Cones
FR2324424B1 (en)
GB1381376A (en) Method of manufacturing a diaphragm for a transducer
US3148572A (en) Scrap rejecters for cutting dies for blanks
ES459628A1 (en) Process of manufacturing a steel strip by rolling, and strip obtained by said process
GB1507644A (en) Grommet-setting tool
IT1173945B (en) MACHINE FOR THE REALIZATION, FROM METAL ROUND, OF EXTERNAL RINGS FOR COINS OR BIMETALLIC MEDALS
US2891304A (en) Electrode blanks
GB1358876A (en) Half-thrust washers and methods of manufacture thereof
ES462316A1 (en) Paper perforator
JPS56122620A (en) Channel shaped frame forming apparatus
US3849853A (en) Method for producing a bearing cage
GB1160460A (en) Apparatus for Severing Webs of Material.
SU642053A1 (en) Method of producing and beading openings in articles made of metal band
IT1099699B (en) Die punching circular saw blades from continuous strip - employs several die stations which perform complementary punch operations
FR2337599A1 (en) Metal sheet bonding system - using punch to form V-shaped section which is pressed flat to form overlap of sheared edges

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee