JPH0180239U - - Google Patents

Info

Publication number
JPH0180239U
JPH0180239U JP1987170108U JP17010887U JPH0180239U JP H0180239 U JPH0180239 U JP H0180239U JP 1987170108 U JP1987170108 U JP 1987170108U JP 17010887 U JP17010887 U JP 17010887U JP H0180239 U JPH0180239 U JP H0180239U
Authority
JP
Japan
Prior art keywords
inner circumferential
circumferential surface
surface portion
mold
diameter hole
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
JP1987170108U
Other languages
English (en)
Other versions
JPH0510998Y2 (ja
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 filed Critical
Priority to JP17010887U priority Critical patent/JPH0510998Y2/ja
Priority to US07/218,248 priority patent/US4939829A/en
Priority to CA000571907A priority patent/CA1294463C/en
Publication of JPH0180239U publication Critical patent/JPH0180239U/ja
Application granted granted Critical
Publication of JPH0510998Y2 publication Critical patent/JPH0510998Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Forging (AREA)

Description

【図面の簡単な説明】
第1図は本考案によるギアの歯部成形用金型を
含む押出成形用金型の説明的断面図、第2図は金
型の絞込部の前記第2内周面部の下端面に対する
俯角θとギアの歯先の下部に生ずる欠肉部の高さ
の関係を示す説明図、第3図は該俯角θ及び第1
内周面部の下端部と絞込部との交点の近傍部にお
けるイオン窒化処理の有無と、ギアの該金型によ
る押出成形の処理限界回数との関係を示す説明図
、また第4図は従来の歯部押出成形用金型の説明
的断面図である。 1……大径孔部、2……小径孔部、3……第1
内周面部、4……第2内周面部、5……絞込部、
6……第2内周面部の下端部近傍部、7……歯部
形成部、8……第2内周面部の下端を通る面、θ
……俯角。

Claims (1)

    【実用新案登録請求の範囲】
  1. 上部に大径の孔部を形成する第1内周面部と、
    下部に該上部の大径孔部と略同軸の小径の孔部を
    形成する第2内周面部と、該第1内周面部の下端
    及び第2内周面部の上端を連結する絞込部とを有
    し、前記第2内周面部に複数の歯部形成部が該第
    2内周面部の上端から下端にわたり該孔部の軸線
    に沿つてそれぞれ半径方向に突設されたギアの歯
    部押出成形用金型において、前記絞込部が前記第
    2内周面部の下端を通る面に対し10°乃至15
    °の俯角を有して設けられ、さらに該第1内周面
    部の下端部と絞込部との交点の近傍部を非表面硬
    化処理部とし、他の金型内面を表面硬化処理部と
    したことを特徴とするギアの歯部押出成形用金型
JP17010887U 1987-07-13 1987-11-09 Expired - Lifetime JPH0510998Y2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP17010887U JPH0510998Y2 (ja) 1987-11-09 1987-11-09
US07/218,248 US4939829A (en) 1987-07-13 1988-07-13 Method of and apparatus for manufacturing a gear
CA000571907A CA1294463C (en) 1987-07-13 1988-07-13 Method of and apparatus for manufacturing a gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17010887U JPH0510998Y2 (ja) 1987-11-09 1987-11-09

Publications (2)

Publication Number Publication Date
JPH0180239U true JPH0180239U (ja) 1989-05-30
JPH0510998Y2 JPH0510998Y2 (ja) 1993-03-17

Family

ID=31460757

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17010887U Expired - Lifetime JPH0510998Y2 (ja) 1987-07-13 1987-11-09

Country Status (1)

Country Link
JP (1) JPH0510998Y2 (ja)

Also Published As

Publication number Publication date
JPH0510998Y2 (ja) 1993-03-17

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