JPS6450911U - - Google Patents

Info

Publication number
JPS6450911U
JPS6450911U JP14654087U JP14654087U JPS6450911U JP S6450911 U JPS6450911 U JP S6450911U JP 14654087 U JP14654087 U JP 14654087U JP 14654087 U JP14654087 U JP 14654087U JP S6450911 U JPS6450911 U JP S6450911U
Authority
JP
Japan
Prior art keywords
tip angle
cutting edge
drill
tip
angle
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
JP14654087U
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 JP14654087U priority Critical patent/JPS6450911U/ja
Publication of JPS6450911U publication Critical patent/JPS6450911U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Description

【図面の簡単な説明】
添付図面の第1図ないし第7図は、本考案壁材
穿孔錐の実施例を示すもので、第1図は全体の正
面図、第2図は底面図、第3図は第1図の―
線断面図、第4図は穿孔の過程を示す断面図、第
5図は中空壁に対し他の部材を装着する施工例を
示す断面図、第6図、第7図はそれぞれ変形実施
例を示す正面図、第8図は従来のコンクリートド
リルの一例及び穿孔状況を示す断面図である。 1:溝、2:ランド、3,3a,3b:切れ刃
、4a,4b:傾斜面。

Claims (1)

    【実用新案登録請求の範囲】
  1. 比較的大きな先端角を有し、先端から基端方向
    に向けて溝1を形成し、回転方向に対しランド2
    の前端であつてドリルの先端部に切れ刃3を形成
    する錐において、先端角αの傾斜面4aの外周
    部に先端角αよりもやゝ小さな角度の先端角α
    の傾斜角4bを形成し、切れ刃3を大きな先端
    角の切れ刃3a部分と、小さな先端角の切れ刃3
    b部分とで構成したことを特徴とする壁材穿孔錐
JP14654087U 1987-09-25 1987-09-25 Pending JPS6450911U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14654087U JPS6450911U (ja) 1987-09-25 1987-09-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14654087U JPS6450911U (ja) 1987-09-25 1987-09-25

Publications (1)

Publication Number Publication Date
JPS6450911U true JPS6450911U (ja) 1989-03-29

Family

ID=31416127

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14654087U Pending JPS6450911U (ja) 1987-09-25 1987-09-25

Country Status (1)

Country Link
JP (1) JPS6450911U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3476510A4 (en) * 2016-06-22 2020-02-12 Toko Co., Ltd. FOREST

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3476510A4 (en) * 2016-06-22 2020-02-12 Toko Co., Ltd. FOREST
US10589364B2 (en) 2016-06-22 2020-03-17 Toko Co., Ltd. Drill

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