JPS57100834A - Manufacture of lug parts such as butterfly nut - Google Patents
Manufacture of lug parts such as butterfly nutInfo
- 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
Links
Landscapes
- 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
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)
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)
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 |
-
1980
- 1980-12-17 JP JP55178344A patent/JPS5848262B2/en not_active Expired
Patent Citations (2)
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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