JPS555121A - Manufacture of screw provided with washer - Google Patents

Manufacture of screw provided with washer

Info

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
Application number
JP7622478A
Other languages
Japanese (ja)
Other versions
JPS5752135B2 (en
Inventor
Masakazu Goto
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.)
Shinko Seisakusho KK
Original Assignee
Shinko Seisakusho 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 Shinko Seisakusho KK filed Critical Shinko Seisakusho KK
Priority to JP7622478A priority Critical patent/JPS555121A/en
Publication of JPS555121A publication Critical patent/JPS555121A/en
Publication of JPS5752135B2 publication Critical patent/JPS5752135B2/ja
Granted legal-status Critical Current

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
JP7622478A 1978-06-23 1978-06-23 Manufacture of screw provided with washer Granted JPS555121A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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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