JP5984329B2 - ボルトの転造方法 - Google Patents
ボルトの転造方法 Download PDFInfo
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- JP5984329B2 JP5984329B2 JP2010223351A JP2010223351A JP5984329B2 JP 5984329 B2 JP5984329 B2 JP 5984329B2 JP 2010223351 A JP2010223351 A JP 2010223351A JP 2010223351 A JP2010223351 A JP 2010223351A JP 5984329 B2 JP5984329 B2 JP 5984329B2
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- effective diameter
- slope
- thread
- bolt
- male screw
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Description
2 雄ねじ
3 ナット
4a,4b,8,24a,24b 斜面
5,6 谷部
7 雌ねじ
21 丸ダイス
22 ブランク
23 山部
24 谷部
Claims (1)
- 雄ねじの向かい合うねじ山斜面によって形成される谷部の角度が、有効径の内側に形成される谷底部分よりも有効径の外側部分の方が大きくされ、かつ、上記雄ねじのねじ山斜面が、有効径の外側および内側において平坦に形成されるとともに、上記平坦にされた外側の斜面と上記平坦にされた内側の斜面とが、有効径上において、対向するねじ山方向に鈍角に重なって形成されていることによって、有効径上において雌ねじと線接触する雄ねじを有するボルトを転造するために、
上記ボルトの雄ねじを形成する雄ねじ部を備え、上記雄ねじ部は、有効径を境に山部と谷部とが形成されるねじ山が複数形成されるとともに、上記谷部の角度は上記山部の角度よりも大きくされ、かつ、上記雄ねじのねじ山斜面が、有効径の外側および内側において平坦に形成されるとともに、上記平坦にされた外側の斜面と上記平坦にされた内側の斜面とが、有効径上において、対向するねじ山方向に鈍角に重なって形成された、ねじ転造ダイスを用いて、
ブランクの中心方向へ押圧して回転させることによりブランクにねじを転造する
ことを特徴とするボルトの転造方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010223351A JP5984329B2 (ja) | 2010-10-01 | 2010-10-01 | ボルトの転造方法 |
Applications Claiming Priority (1)
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JP2010223351A JP5984329B2 (ja) | 2010-10-01 | 2010-10-01 | ボルトの転造方法 |
Publications (2)
Publication Number | Publication Date |
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JP2012077837A JP2012077837A (ja) | 2012-04-19 |
JP5984329B2 true JP5984329B2 (ja) | 2016-09-06 |
Family
ID=46238329
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JP2010223351A Active JP5984329B2 (ja) | 2010-10-01 | 2010-10-01 | ボルトの転造方法 |
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JP (1) | JP5984329B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210092532A (ko) * | 2020-01-16 | 2021-07-26 | 두산중공업 주식회사 | 볼트-너트 조립 구조, 너트의 제조방법, 볼트-너트 조립 구조가 적용된 로터 조립체 및 이를 포함하는 가스터빈 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4936144B2 (ja) * | 2008-06-11 | 2012-05-23 | 日本ファスナー工業株式会社 | ボルト |
-
2010
- 2010-10-01 JP JP2010223351A patent/JP5984329B2/ja active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210092532A (ko) * | 2020-01-16 | 2021-07-26 | 두산중공업 주식회사 | 볼트-너트 조립 구조, 너트의 제조방법, 볼트-너트 조립 구조가 적용된 로터 조립체 및 이를 포함하는 가스터빈 |
KR102294821B1 (ko) * | 2020-01-16 | 2021-08-27 | 두산중공업 주식회사 | 볼트-너트 조립 구조, 너트의 제조방법, 볼트-너트 조립 구조가 적용된 로터 조립체 및 이를 포함하는 가스터빈 |
Also Published As
Publication number | Publication date |
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JP2012077837A (ja) | 2012-04-19 |
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