JPS57100834A - Manufacture of lug parts such as butterfly nut - Google Patents

Manufacture of lug parts such as butterfly nut

Info

Publication number
JPS57100834A
JPS57100834A JP17834480A JP17834480A JPS57100834A JP S57100834 A JPS57100834 A JP S57100834A JP 17834480 A JP17834480 A JP 17834480A JP 17834480 A JP17834480 A JP 17834480A JP S57100834 A JPS57100834 A JP S57100834A
Authority
JP
Japan
Prior art keywords
drum part
axial direction
bar
insertion hole
forming
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
JP17834480A
Other languages
Japanese (ja)
Other versions
JPS5848262B2 (en
Inventor
Hiroyuki Inoue
Kenichi Ishikawa
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.)
MIYAGAWA KINZOKU KOGYO
MIYAGAWA KINZOKU KOGYO KK
Original Assignee
MIYAGAWA KINZOKU KOGYO
MIYAGAWA KINZOKU KOGYO KK
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 MIYAGAWA KINZOKU KOGYO, MIYAGAWA KINZOKU KOGYO KK filed Critical MIYAGAWA KINZOKU KOGYO
Priority to JP55178344A priority Critical patent/JPS5848262B2/en
Publication of JPS57100834A publication Critical patent/JPS57100834A/en
Publication of JPS5848262B2 publication Critical patent/JPS5848262B2/en
Expired legal-status Critical Current

Links

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  • Forging (AREA)

Abstract

PURPOSE: To manufacture titled lug parts having high strength, by compressing a bar-like material in the axial direction, forming a screw drum part in an insertion hole of a die, and forming a plate-like projecting lug part on both sides of the screw drum part by use of an excess metal produced by compression.
CONSTITUTION: A bar-like material 1 is cut to necessary size and is placed in an insetion hole 3 of a die 2. The bar-like material 1 is compressed in the axial direction, a screw drum part 4 for forming an external thread or an internal thread is formed in the insertion hole 3, and also an excess metal produced by compression is projected in a hollowed groove hollowed in the axial direction along the side of the insertion hole 3. By working this projecting part, symmetrical projecting lug parts 6 are formed on both ends of the drum part 4. Circular arc length of the base part of the projecting lug part 6 is set to 5W25% of length of the outside circumference of the drum part 4, and also width of the tip part is made wider than that of the base part of the projecting lug part 6 contacting with the drum part.
COPYRIGHT: (C)1982,JPO&Japio
JP55178344A 1980-12-17 1980-12-17 Manufacturing method for parts with ears such as butterfly nuts Expired JPS5848262B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55178344A JPS5848262B2 (en) 1980-12-17 1980-12-17 Manufacturing method for parts with ears such as butterfly nuts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55178344A JPS5848262B2 (en) 1980-12-17 1980-12-17 Manufacturing method for parts with ears such as butterfly nuts

Publications (2)

Publication Number Publication Date
JPS57100834A true JPS57100834A (en) 1982-06-23
JPS5848262B2 JPS5848262B2 (en) 1983-10-27

Family

ID=16046848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55178344A Expired JPS5848262B2 (en) 1980-12-17 1980-12-17 Manufacturing method for parts with ears such as butterfly nuts

Country Status (1)

Country Link
JP (1) JPS5848262B2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59225074A (en) * 1983-06-03 1984-12-18 クリフ株式会社 Fire-proof and smoke-proof damper
JPS6077773A (en) * 1983-10-05 1985-05-02 株式会社東芝 Fire-proof damper apparatus
JPS60102487A (en) * 1983-11-08 1985-06-06 株式会社ダイケン Opening apparatus of door and window
JPS6083652U (en) * 1983-11-16 1985-06-10 東洋熱工業株式会社 fire damper
JPS60168469A (en) * 1984-02-13 1985-08-31 クリフ株式会社 Lock release apparatus in fire-proof damper
JPS60141859U (en) * 1984-02-29 1985-09-19 シャープ株式会社 fire damper
JPS60168844U (en) * 1984-04-18 1985-11-09 シャープ株式会社 fire damper
JPS6114054U (en) * 1984-06-29 1986-01-27 シャープ株式会社 fire damper
JPS6145779A (en) * 1984-08-09 1986-03-05 古河電気工業株式会社 Temperature-sensitive actuator
JPH0418589Y2 (en) * 1984-10-30 1992-04-24
JPS6278943U (en) * 1985-11-05 1987-05-20
JPS6282058U (en) * 1985-11-11 1987-05-26
JPH059562U (en) * 1991-07-17 1993-02-09 株式会社秋山製作所 Fire damper device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4330038Y1 (en) * 1966-03-24 1968-12-09
JPS5146067A (en) * 1974-10-18 1976-04-20 Nippon Electric Co Handotaisochino seizohoho

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4330038Y1 (en) * 1966-03-24 1968-12-09
JPS5146067A (en) * 1974-10-18 1976-04-20 Nippon Electric Co Handotaisochino seizohoho

Also Published As

Publication number Publication date
JPS5848262B2 (en) 1983-10-27

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