JPH0365610U - - Google Patents

Info

Publication number
JPH0365610U
JPH0365610U JP12570589U JP12570589U JPH0365610U JP H0365610 U JPH0365610 U JP H0365610U JP 12570589 U JP12570589 U JP 12570589U JP 12570589 U JP12570589 U JP 12570589U JP H0365610 U JPH0365610 U JP H0365610U
Authority
JP
Japan
Prior art keywords
drill
diameter portion
small
multistage
helical groove
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.)
Pending
Application number
JP12570589U
Other languages
English (en)
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 JP12570589U priority Critical patent/JPH0365610U/ja
Publication of JPH0365610U publication Critical patent/JPH0365610U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)

Description

【図面の簡単な説明】
図面は本考案に係る多段ドリルの一実施例を示
す正面図である。 1……小径部、3,5……第1、第2の大径部
、7……当り面、9,11,13……ねじれ溝、
15……把持部、17……刃部、19……あたり
部。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) ねじれ溝を有するとともに一方の先端に当
    り面を有するドリル小径部の他端に、ねじれ溝を
    有し前記ドリル小径部より順次径の大きなドリル
    大径部を1個以上順次連続して形成してなること
    を特徴とする多段ドリル。 (2) 前記ドリル小径部およびドリル大径部の各
    ねじれ溝が連続形成されてなる請求項1記載の多
    段ドリル。
JP12570589U 1989-10-30 1989-10-30 Pending JPH0365610U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12570589U JPH0365610U (ja) 1989-10-30 1989-10-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12570589U JPH0365610U (ja) 1989-10-30 1989-10-30

Publications (1)

Publication Number Publication Date
JPH0365610U true JPH0365610U (ja) 1991-06-26

Family

ID=31673569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12570589U Pending JPH0365610U (ja) 1989-10-30 1989-10-30

Country Status (1)

Country Link
JP (1) JPH0365610U (ja)

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