JPS6168812U - - Google Patents

Info

Publication number
JPS6168812U
JPS6168812U JP15143684U JP15143684U JPS6168812U JP S6168812 U JPS6168812 U JP S6168812U JP 15143684 U JP15143684 U JP 15143684U JP 15143684 U JP15143684 U JP 15143684U JP S6168812 U JPS6168812 U JP S6168812U
Authority
JP
Japan
Prior art keywords
drill
heel surface
blade
protrusion
apex
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
JP15143684U
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 JP15143684U priority Critical patent/JPS6168812U/ja
Publication of JPS6168812U publication Critical patent/JPS6168812U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)

Description

【図面の簡単な説明】
第1図は本考案の一実施例に係るドリルの刃先
端面を示す説明図、第2,3図は夫々第1図のド
リルの正面図及び右側面図、第4図は第2図のA
−A線断面図、第5図は溝形状の説明図である。 1…実施例に係るドリル、2…従来の難削材用
ドリル、3…標準ドリル、4…刃裏面、5…ヒー
ル面、5a…頂点、5b…突出部、6…チツプ排
出溝、7…チゼル刃、8…刃部。

Claims (1)

    【実用新案登録請求の範囲】
  1. ドリル軸方向断面において、刃部のヒール面が
    、チツプ排出溝に向けて三角形状に突出しかつそ
    の頂点がヒール面の径方向略中央部に位置する突
    出部を備えたことを特徴とする難削材用ドリル。
JP15143684U 1984-10-05 1984-10-05 Pending JPS6168812U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15143684U JPS6168812U (ja) 1984-10-05 1984-10-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15143684U JPS6168812U (ja) 1984-10-05 1984-10-05

Publications (1)

Publication Number Publication Date
JPS6168812U true JPS6168812U (ja) 1986-05-12

Family

ID=30709549

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15143684U Pending JPS6168812U (ja) 1984-10-05 1984-10-05

Country Status (1)

Country Link
JP (1) JPS6168812U (ja)

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