JPS57124538A - Working and manufacturing method for screw with slit - Google Patents

Working and manufacturing method for screw with slit

Info

Publication number
JPS57124538A
JPS57124538A JP901081A JP901081A JPS57124538A JP S57124538 A JPS57124538 A JP S57124538A JP 901081 A JP901081 A JP 901081A JP 901081 A JP901081 A JP 901081A JP S57124538 A JPS57124538 A JP S57124538A
Authority
JP
Japan
Prior art keywords
screw thread
slit
screw
working
side walls
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
JP901081A
Other languages
Japanese (ja)
Other versions
JPH0258016B2 (en
Inventor
Yoshioki Tomoyasu
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP901081A priority Critical patent/JPS57124538A/en
Publication of JPS57124538A publication Critical patent/JPS57124538A/en
Publication of JPH0258016B2 publication Critical patent/JPH0258016B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Transmission Devices (AREA)

Abstract

PURPOSE:To facilitate the work of screw thread containing a slit by working small screw thread previously and by working large screw thread on the small screw thread when working the slit in the screw thread. CONSTITUTION:For the work of screw thread containing a slit, space formed between adjacent small side walls of a screw is left to made a slit, and large screw thread with different pitch is worked overit to deform the last small screw part into part of the large screw thread, thus forming the screw which has the slit in the screw thread. When the angle of the screw thread is made less than that of the oppsite screw thread and a slit is worked in the screw thread in the axial direction, the side walls of the screw thread deforms by the opposite side walls to contract the slit because of a difference in the angle of the screw thread during tightening, and its repulsive force presses back the opposite side walls of the screw thread thus improving prevention effectively from looseness due to oscillation.
JP901081A 1981-01-26 1981-01-26 Working and manufacturing method for screw with slit Granted JPS57124538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP901081A JPS57124538A (en) 1981-01-26 1981-01-26 Working and manufacturing method for screw with slit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP901081A JPS57124538A (en) 1981-01-26 1981-01-26 Working and manufacturing method for screw with slit

Publications (2)

Publication Number Publication Date
JPS57124538A true JPS57124538A (en) 1982-08-03
JPH0258016B2 JPH0258016B2 (en) 1990-12-06

Family

ID=11708674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP901081A Granted JPS57124538A (en) 1981-01-26 1981-01-26 Working and manufacturing method for screw with slit

Country Status (1)

Country Link
JP (1) JPS57124538A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62241613A (en) * 1986-04-11 1987-10-22 Yasutomo Noto Thread processing tool
JPS635835A (en) * 1986-06-25 1988-01-11 Nippon Tokushu Kizai Kk Rolling method for grooved screw and rolling flat dies
JP2001317518A (en) * 2000-05-09 2001-11-16 Yanmar Diesel Engine Co Ltd Rolled internal thread and rolled external thread

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62241613A (en) * 1986-04-11 1987-10-22 Yasutomo Noto Thread processing tool
JPH0620668B2 (en) * 1986-04-11 1994-03-23 康知 能戸 Thread processing tool
JPS635835A (en) * 1986-06-25 1988-01-11 Nippon Tokushu Kizai Kk Rolling method for grooved screw and rolling flat dies
JP2001317518A (en) * 2000-05-09 2001-11-16 Yanmar Diesel Engine Co Ltd Rolled internal thread and rolled external thread
JP4580061B2 (en) * 2000-05-09 2010-11-10 ヤンマー株式会社 Rolled female screw

Also Published As

Publication number Publication date
JPH0258016B2 (en) 1990-12-06

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