JPS6341408U - - Google Patents

Info

Publication number
JPS6341408U
JPS6341408U JP13492586U JP13492586U JPS6341408U JP S6341408 U JPS6341408 U JP S6341408U JP 13492586 U JP13492586 U JP 13492586U JP 13492586 U JP13492586 U JP 13492586U JP S6341408 U JPS6341408 U JP S6341408U
Authority
JP
Japan
Prior art keywords
drill
leading edge
diameter
small
diameter drill
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
JP13492586U
Other languages
Japanese (ja)
Other versions
JPH035371Y2 (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 JP13492586U priority Critical patent/JPH035371Y2/ja
Publication of JPS6341408U publication Critical patent/JPS6341408U/ja
Application granted granted Critical
Publication of JPH035371Y2 publication Critical patent/JPH035371Y2/ja
Expired legal-status Critical Current

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  • Drilling Tools (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１ないし第３図は本考案の一実施例を示し、
第１図は全体の正面図、第２図は第１図―矢
視図、第３図は第１図―線断面図、第４，第
５図は従来例を示し、第４図は全体の正面図、第
５図は第４図Ｖ―Ｖ線断面図である。 ａ……ドリル回転方向、２……小径ドリル部、
３……大径ドリル部、５……ねじれ溝、７……ラ
ンド面、１０……逃げ面、１１……すくい面、１
２……側面、１３……リーデイングエツジ、１４
……平坦面。 1 to 3 show an embodiment of the present invention,
Fig. 1 is a front view of the whole, Fig. 2 is a view taken from Fig. 1 in the direction of the arrows, Fig. 3 is a sectional view taken along the line shown in Fig. 1, Figs. 4 and 5 show conventional examples, and Fig. 4 shows the whole. FIG. 5 is a sectional view taken along the line V--V in FIG. 4. a...Drill rotation direction, 2...Small diameter drill part,
3...Large diameter drill part, 5...Twisted groove, 7...Land surface, 10...Fleet surface, 11...Rake surface, 1
2... Side, 13... Leading edge, 14
...Flat surface.

Claims (1)

【実用新案登録請求の範囲】 (1) 小径ドリル部と、それに連設される大径ド
リル部とを備え、両ドリル部はそれらの全長に亘
つて一連に延びる溝幅の等しい複数のねじれ溝を
有し、前記大径ドリル部の各逃げ面は前記小径ド
リル部の各ランド面より立上つており、前記逃げ
面と交わるすくい面を含む側面を前記ねじれ溝の
リーデイングエツジよりもドリル回転方向後側に
変位させて前記側面基部と前記リーデイングエツ
ジとの間を平坦面に形成した段付ドリル。 (2) 前記平坦面におけるドリル回転方向の幅は
、ドリル回転中心と、前記リーデイングエツジお
よび前記側面基部とをそれぞれ結ぶ二直線のなす
角度が１０〜２０°となるように設定される、実
用新案登録請求の範囲第(1)項記載の段付ドリル
。[Claims for Utility Model Registration] (1) Comprising a small-diameter drill part and a large-diameter drill part connected to the small-diameter drill part, both drill parts have a plurality of helical grooves with equal groove widths extending continuously over their entire length. Each flank of the large-diameter drill part rises above each land surface of the small-diameter drill part, and the side surface including the rake face that intersects with the flank is positioned in the direction of rotation of the drill relative to the leading edge of the helical groove. A stepped drill that is displaced rearward to form a flat surface between the side base and the leading edge. (2) A utility model in which the width of the flat surface in the drill rotation direction is set so that the angle formed by two straight lines connecting the drill rotation center, the leading edge, and the side base, respectively, is 10 to 20 degrees. A stepped drill according to registered claim (1).
JP13492586U 1986-09-03 1986-09-03 Expired JPH035371Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13492586U JPH035371Y2 (en) 1986-09-03 1986-09-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13492586U JPH035371Y2 (en) 1986-09-03 1986-09-03

Publications (2)

Publication Number Publication Date
JPS6341408U true JPS6341408U (en) 1988-03-18
JPH035371Y2 JPH035371Y2 (en) 1991-02-12

Family

ID=31036626

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13492586U Expired JPH035371Y2 (en) 1986-09-03 1986-09-03

Country Status (1)

Country Link
JP (1) JPH035371Y2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005329477A (en) * 2004-05-18 2005-12-02 Daihatsu Motor Co Ltd Bush-less deep hole machining method and stepped pilot hole forming stepped drill
JP2014069246A (en) * 2012-09-27 2014-04-21 Kuritakoki Co Ltd Drill and drilling method
WO2015118684A1 (en) * 2014-02-10 2015-08-13 栗田工機株式会社 Drill and drilling method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4418408B2 (en) * 2005-07-04 2010-02-17 オーエスジー株式会社 Step drill
KR102178656B1 (en) * 2018-01-22 2020-11-13 오에스지 가부시키가이샤 Stepped drill and method of manufacturing stepped drill

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005329477A (en) * 2004-05-18 2005-12-02 Daihatsu Motor Co Ltd Bush-less deep hole machining method and stepped pilot hole forming stepped drill
JP4565492B2 (en) * 2004-05-18 2010-10-20 ダイハツ工業株式会社 Bushless deep hole machining method
JP2014069246A (en) * 2012-09-27 2014-04-21 Kuritakoki Co Ltd Drill and drilling method
WO2015118684A1 (en) * 2014-02-10 2015-08-13 栗田工機株式会社 Drill and drilling method
JPWO2015118684A1 (en) * 2014-02-10 2017-03-23 栗田工機株式会社 Drill and drilling method

Also Published As

Publication number Publication date
JPH035371Y2 (en) 1991-02-12

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