JPS555121A - Manufacture of screw provided with washer - Google Patents
Manufacture of screw provided with washerInfo
- Publication number
- JPS555121A JPS555121A JP7622478A JP7622478A JPS555121A JP S555121 A JPS555121 A JP S555121A JP 7622478 A JP7622478 A JP 7622478A JP 7622478 A JP7622478 A JP 7622478A JP S555121 A JPS555121 A JP S555121A
- Authority
- JP
- Japan
- Prior art keywords
- washer
- diameter
- screw thread
- fitting
- screw
- 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
- Bolts, Nuts, And Washers (AREA)
- Forging (AREA)
Abstract
PURPOSE: To make easy the fitting of the washer, and to manufacture the screw provided with washer, of good usuability, by fitting the washer to the washer-fitting part whose diameter is larger than the screw thread carving part, and by forming the screw thread carving part continuously to the washer's detachment stopper forming part of the same diameter as the washer- fitting part.
CONSTITUTION: The wire material, of the same diameter as the diameter l4 of the screw thread carving part 2 is worked by the heading; hereby, the large diameter head 3, the washer-fitting part 4 with diameter l3 smaller than above head 3 and larger than the diameter l4, the washer's detachment stopper forming part 5 of the same diameter as l4, and the screw thread carving part 2, are successively formed from the one end; hereby, the screw blank 1 is prepared. Next, the connecting part 6 for the screw thread carving part 2 and the stopper forming part 5 is formed into a slope type. Then, the spring washer 7 and the flat washer 8 are fitted into the washer-fitting part 4 through the small diameter screw thread carving part 2, the connecting part 6 and the stopper forming part 5. After that, the screw threads 9, 10, are carved in the carving part 2 and the forming part 5. That is, the diameter l5 of the root 11 of screw thread 9 is formed smaller than the diameter l4, the external diameter l2 of the top 12 of the screw thread 9 is formed larger than diameter l4; thus, the screw body 13 holding washers 7, 8, is formed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7622478A JPS555121A (en) | 1978-06-23 | 1978-06-23 | Manufacture of screw provided with washer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7622478A JPS555121A (en) | 1978-06-23 | 1978-06-23 | Manufacture of screw provided with washer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS555121A true JPS555121A (en) | 1980-01-16 |
JPS5752135B2 JPS5752135B2 (en) | 1982-11-05 |
Family
ID=13599196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7622478A Granted JPS555121A (en) | 1978-06-23 | 1978-06-23 | Manufacture of screw provided with washer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS555121A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5789102A (en) * | 1980-11-21 | 1982-06-03 | Shin Meiwa Ind Co Ltd | Servo system incorporating digital limiter |
US4464091A (en) * | 1981-01-12 | 1984-08-07 | Deutsch Fastener Corp. | Captive fastener |
JPS6245437A (en) * | 1985-08-23 | 1987-02-27 | Goto Seibiyoushiyo:Kk | Manufacture of falling-off preventive screw |
JP2008291874A (en) * | 2007-05-23 | 2008-12-04 | Topura Co Ltd | Plain washer crimp bolt and its manufacturing method |
JP2009204096A (en) * | 2008-02-28 | 2009-09-10 | Canon Inc | Stepped machine screw with washer, image forming device using the same, and method of manufacturing stepped machine screw with washer |
-
1978
- 1978-06-23 JP JP7622478A patent/JPS555121A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5789102A (en) * | 1980-11-21 | 1982-06-03 | Shin Meiwa Ind Co Ltd | Servo system incorporating digital limiter |
US4464091A (en) * | 1981-01-12 | 1984-08-07 | Deutsch Fastener Corp. | Captive fastener |
JPS6245437A (en) * | 1985-08-23 | 1987-02-27 | Goto Seibiyoushiyo:Kk | Manufacture of falling-off preventive screw |
JP2008291874A (en) * | 2007-05-23 | 2008-12-04 | Topura Co Ltd | Plain washer crimp bolt and its manufacturing method |
JP2009204096A (en) * | 2008-02-28 | 2009-09-10 | Canon Inc | Stepped machine screw with washer, image forming device using the same, and method of manufacturing stepped machine screw with washer |
Also Published As
Publication number | Publication date |
---|---|
JPS5752135B2 (en) | 1982-11-05 |
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