JPH0435812U - - Google Patents

Info

Publication number
JPH0435812U
JPH0435812U JP7603990U JP7603990U JPH0435812U JP H0435812 U JPH0435812 U JP H0435812U JP 7603990 U JP7603990 U JP 7603990U JP 7603990 U JP7603990 U JP 7603990U JP H0435812 U JPH0435812 U JP H0435812U
Authority
JP
Japan
Prior art keywords
drill
cutting edge
steps
outer periphery
appropriate number
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
JP7603990U
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 JP7603990U priority Critical patent/JPH0435812U/ja
Publication of JPH0435812U publication Critical patent/JPH0435812U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
第1図及び第2図はこの考案の一実施例を示す
もので、第1図は要部側面図、第2図は正面図で
あり、第3図は研磨砥石の斜視図である。 1……深穴用ドリル、2……切れ刃、2a……
第1切れ刃、2b……第2切れ刃、2c……第3
切れ刃、3……主逃げ面、4……段差部分、5…
…溝、6……砥石、7……周面、8……段差部分

Claims (1)

    【実用新案登録請求の範囲】
  1. ドリルにおいて、このドリルの少なくとも切れ
    刃部分にあつて、ドリルの中心から外周に向つて
    適数段の段差を設けて順次外周側を低くして全体
    で適数段の段差切れ刃に形成したことを特徴とす
    る深穴用ドリル。
JP7603990U 1990-07-17 1990-07-17 Pending JPH0435812U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7603990U JPH0435812U (ja) 1990-07-17 1990-07-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7603990U JPH0435812U (ja) 1990-07-17 1990-07-17

Publications (1)

Publication Number Publication Date
JPH0435812U true JPH0435812U (ja) 1992-03-25

Family

ID=31617149

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7603990U Pending JPH0435812U (ja) 1990-07-17 1990-07-17

Country Status (1)

Country Link
JP (1) JPH0435812U (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013103312A (ja) * 2011-11-15 2013-05-30 Mori Seiki Co Ltd 切屑吸引用工具
JPWO2015118684A1 (ja) * 2014-02-10 2017-03-23 栗田工機株式会社 ドリル及び穴明け方法
KR20200053544A (ko) * 2017-09-15 2020-05-18 귀링 카게 4-날 드릴
EP3305447B1 (en) 2016-02-14 2023-03-29 Tec-Spiral Enterprises Tools Co., Ltd. Step-structured twist drill

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49111293A (ja) * 1973-02-26 1974-10-23

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49111293A (ja) * 1973-02-26 1974-10-23

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013103312A (ja) * 2011-11-15 2013-05-30 Mori Seiki Co Ltd 切屑吸引用工具
JPWO2015118684A1 (ja) * 2014-02-10 2017-03-23 栗田工機株式会社 ドリル及び穴明け方法
EP3305447B1 (en) 2016-02-14 2023-03-29 Tec-Spiral Enterprises Tools Co., Ltd. Step-structured twist drill
KR20200053544A (ko) * 2017-09-15 2020-05-18 귀링 카게 4-날 드릴
CN111201102A (zh) * 2017-09-15 2020-05-26 钴领两合公司 四刃钻头
JP2020533191A (ja) * 2017-09-15 2020-11-19 ギューリング カーゲーGuehring Kg 4枚刃ドリル

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