JPS54141372A - Bundling method for metallic sheets - Google Patents

Bundling method for metallic sheets

Info

Publication number
JPS54141372A
JPS54141372A JP4878978A JP4878978A JPS54141372A JP S54141372 A JPS54141372 A JP S54141372A JP 4878978 A JP4878978 A JP 4878978A JP 4878978 A JP4878978 A JP 4878978A JP S54141372 A JPS54141372 A JP S54141372A
Authority
JP
Japan
Prior art keywords
punched
outer circumference
acute angle
edge
projection
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.)
Granted
Application number
JP4878978A
Other languages
Japanese (ja)
Other versions
JPS6246252B2 (en
Inventor
Morihisa Tsukada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4878978A priority Critical patent/JPS54141372A/en
Publication of JPS54141372A publication Critical patent/JPS54141372A/en
Publication of JPS6246252B2 publication Critical patent/JPS6246252B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

PURPOSE: To strengthen the jointing force, by notching a part of outer circumference along the circular outer circumference, and by installing a punched projection being shaped so as to make its end to be an acute angle.
CONSTITUTION: A part of outer cirumference of the metallic sheet 1 is punched along the circular outer circumfeence 10 by the combined tools consisting of the punch provided with the edge 13 and the cylindrical die. Hereby, a part of outer circumference is shaped into a balance weight type projection, and both ends of the punched circular arc type outer circumference 10 forms an edge of acute angle. The metallic sheets, being thus provided with the punched projection, are piled up and are pressed; hereby, the balance weight type outer circumference 10 and the adjoining another metallic sheet's punched hole 12 are fitted to each other. Especially, since the dege 11 forms an acute angle, the edge 11 gnaws into the adjoining metallic sheet and engages together with. Hereupon, by the action of the burr at the punched part and the force of spring-back due to the residual stress, the joining force is further strengthened. Besides, the size, number and location of the punched projections are determined according to the size of the parts like as the iron core, etc., of the electric gears, the number of piling up, the electric characteristics, etc., and the shape can be changed invarious ways.
COPYRIGHT: (C)1979,JPO&Japio
JP4878978A 1978-04-26 1978-04-26 Bundling method for metallic sheets Granted JPS54141372A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4878978A JPS54141372A (en) 1978-04-26 1978-04-26 Bundling method for metallic sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4878978A JPS54141372A (en) 1978-04-26 1978-04-26 Bundling method for metallic sheets

Publications (2)

Publication Number Publication Date
JPS54141372A true JPS54141372A (en) 1979-11-02
JPS6246252B2 JPS6246252B2 (en) 1987-10-01

Family

ID=12812993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4878978A Granted JPS54141372A (en) 1978-04-26 1978-04-26 Bundling method for metallic sheets

Country Status (1)

Country Link
JP (1) JPS54141372A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61249635A (en) * 1985-04-26 1986-11-06 Enami Seiki:Kk Joining method for platelike member
US4900636A (en) * 1987-09-08 1990-02-13 Nippondenso Co., Ltd. Metal plate laminated body
JP2009156321A (en) * 2007-12-26 2009-07-16 Ishikawa Gasket Co Ltd Metal laminate cylinder head gasket

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833871A (en) * 1971-09-01 1973-05-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833871A (en) * 1971-09-01 1973-05-14

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61249635A (en) * 1985-04-26 1986-11-06 Enami Seiki:Kk Joining method for platelike member
JPH0460734B2 (en) * 1985-04-26 1992-09-28 Enami Seiki Kk
US4900636A (en) * 1987-09-08 1990-02-13 Nippondenso Co., Ltd. Metal plate laminated body
JP2009156321A (en) * 2007-12-26 2009-07-16 Ishikawa Gasket Co Ltd Metal laminate cylinder head gasket
JP4567722B2 (en) * 2007-12-26 2010-10-20 石川ガスケット株式会社 Metal laminated cylinder head gasket
KR101100742B1 (en) 2007-12-26 2011-12-30 이시카와 가스킷 가부시키가이샤 Steel laminate cylinder head gasket

Also Published As

Publication number Publication date
JPS6246252B2 (en) 1987-10-01

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