JPS63151592U - - Google Patents

Info

Publication number
JPS63151592U
JPS63151592U JP4025487U JP4025487U JPS63151592U JP S63151592 U JPS63151592 U JP S63151592U JP 4025487 U JP4025487 U JP 4025487U JP 4025487 U JP4025487 U JP 4025487U JP S63151592 U JPS63151592 U JP S63151592U
Authority
JP
Japan
Prior art keywords
tip
bit
bit body
outer circumference
ejection 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
JP4025487U
Other languages
English (en)
Other versions
JPH057353Y2 (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 JP4025487U priority Critical patent/JPH057353Y2/ja
Publication of JPS63151592U publication Critical patent/JPS63151592U/ja
Application granted granted Critical
Publication of JPH057353Y2 publication Critical patent/JPH057353Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)

Description

【図面の簡単な説明】
第1図ないし第6図はこの考案の実施例を示す
図である。第1図は、第一実施例のビツトを示す
側面図、第2図は、同平面図、第3図は第二実施
例のビツトを示す側面図、第4図は、同平面図、
第5図は、第三実施例のビツトを示す側面図、第
6図は、同平面図、第7図は、従来のビツトの一
例を示す側面図、第8図は、同平面図である。 1,20,30……ビツト本体、4,22……
くり粉溝、10,24,34……噴出孔、11,
23,33……ガイド溝。

Claims (1)

    【実用新案登録請求の範囲】
  1. ビツト本体の先端外周部に、先端面から後端側
    に向けて延びるくり粉溝が形成されたビツトにお
    いて、上記ビツト本体の先端外周部の上記くり粉
    溝が形成された部分以外の部分に、破砕屑除去お
    よび冷却用の流体を噴出させる噴出孔を上記ビツ
    ト本体の先端側に向けて形成すると共に、この噴
    出孔から上記ビツト本体の先端面まで延びるガイ
    ド溝を形成したことを特徴とするビツト。
JP4025487U 1987-03-19 1987-03-19 Expired - Lifetime JPH057353Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4025487U JPH057353Y2 (ja) 1987-03-19 1987-03-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4025487U JPH057353Y2 (ja) 1987-03-19 1987-03-19

Publications (2)

Publication Number Publication Date
JPS63151592U true JPS63151592U (ja) 1988-10-05
JPH057353Y2 JPH057353Y2 (ja) 1993-02-24

Family

ID=30854182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4025487U Expired - Lifetime JPH057353Y2 (ja) 1987-03-19 1987-03-19

Country Status (1)

Country Link
JP (1) JPH057353Y2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03122187U (ja) * 1990-03-26 1991-12-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03122187U (ja) * 1990-03-26 1991-12-13

Also Published As

Publication number Publication date
JPH057353Y2 (ja) 1993-02-24

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