JPS5740126A - Method of manufacturing rotor body for electromagnetic coupling - Google Patents

Method of manufacturing rotor body for electromagnetic coupling

Info

Publication number
JPS5740126A
JPS5740126A JP55115730A JP11573080A JPS5740126A JP S5740126 A JPS5740126 A JP S5740126A JP 55115730 A JP55115730 A JP 55115730A JP 11573080 A JP11573080 A JP 11573080A JP S5740126 A JPS5740126 A JP S5740126A
Authority
JP
Japan
Prior art keywords
bottom portion
rotor body
arc
shaped
cold forging
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.)
Pending
Application number
JP55115730A
Other languages
Japanese (ja)
Inventor
Haruya Fujita
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.)
Ogura Clutch Co Ltd
Original Assignee
Ogura Clutch 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 Ogura Clutch Co Ltd filed Critical Ogura Clutch Co Ltd
Priority to JP55115730A priority Critical patent/JPS5740126A/en
Publication of JPS5740126A publication Critical patent/JPS5740126A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the number of manufacturing steps of a rotor which is made of an inner and an outer walls and a bottom portion from an annular blank by cold forging, by providing arc-shaped recesses on the inside of the bottom portion and then cutting the bottom portion to open arc-shaped holes through it.
CONSTITUTION: When a rotor 1 comprising an inner and an outer walls 3, 4, a bottom portion 5 and an annular groove is to be made from an annular blank 18 by cold forging, arc-shaped recesses 17'A, 17'B are provided on the inside of the bottom portion 5 and this portion is then cut to eliminate the bottoms (a) of the recesses 17'A, 17'B to open magnetic-circuit-disconnecting arc-shaped holes 17A, 17B through the bottom portion 5. The blank 18 is shaped to a rough rotor body A by cold forging with a die 19 etc. The bottom and annular groove end of the rough rotor body A are cut to provide a rotor body 1A. Since punching work is not needed, maintenance cost is reduced.
COPYRIGHT: (C)1982,JPO&Japio
JP55115730A 1980-08-22 1980-08-22 Method of manufacturing rotor body for electromagnetic coupling Pending JPS5740126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55115730A JPS5740126A (en) 1980-08-22 1980-08-22 Method of manufacturing rotor body for electromagnetic coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55115730A JPS5740126A (en) 1980-08-22 1980-08-22 Method of manufacturing rotor body for electromagnetic coupling

Publications (1)

Publication Number Publication Date
JPS5740126A true JPS5740126A (en) 1982-03-05

Family

ID=14669674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55115730A Pending JPS5740126A (en) 1980-08-22 1980-08-22 Method of manufacturing rotor body for electromagnetic coupling

Country Status (1)

Country Link
JP (1) JPS5740126A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100470930B1 (en) * 2002-12-10 2005-02-21 주식회사 엠씨테크 Method For Manufacturing Of Eletro Clutch Assembly For The Motors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100470930B1 (en) * 2002-12-10 2005-02-21 주식회사 엠씨테크 Method For Manufacturing Of Eletro Clutch Assembly For The Motors

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