JPS645708A - Drill - Google Patents

Drill

Info

Publication number
JPS645708A
JPS645708A JP62160580A JP16058087A JPS645708A JP S645708 A JPS645708 A JP S645708A JP 62160580 A JP62160580 A JP 62160580A JP 16058087 A JP16058087 A JP 16058087A JP S645708 A JPS645708 A JP S645708A
Authority
JP
Japan
Prior art keywords
cutting blade
minor
drill
main cutting
chips
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
JP62160580A
Other languages
Japanese (ja)
Other versions
JPH0659566B2 (en
Inventor
Koichiro Wakihira
Michitaka Katsuta
Masayasu Hino
Tadao Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
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 by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP16058087A priority Critical patent/JPH0659566B2/en
Publication of JPS645708A publication Critical patent/JPS645708A/en
Publication of JPH0659566B2 publication Critical patent/JPH0659566B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)

Abstract

PURPOSE:To prevent chips from being scattered by forming a main cutting blade in such a manner that it is curved into a concave shape in the direction of rotation, and then making the angle between the main cutting blade and a minor cutting blade to be not less than 100 deg., and further setting the distance from the shaft center of a drill to the point of intersection between the main cutting blade and the minor cutting blade to be not more than 0.2 times as large as the diameter of the drill. CONSTITUTION:Since a main cutting blade 3m is formed in such a manner that it is curved into a concave shape in the direction of rotation, and then, chips are also curved and their stiffness is increased, the chips are caused to flow along the cutting face for a long time. The angle theta between the main cutting blade 3m and a minor cutting blade 3s is set at not less than 100 deg.. Accordingly, the chips emitting from the main cutting blade 3m and the minor cutting blade 3s are connected with each other, and drew in the minor cutting-blade groove 1s side, and then, together with the chips emitting from the minor cutting blade 3s, they collide with the inner periphery surface of the minor groove 1s and are crushed finely. In addition, the distance between the point of intersection P1 between the main cutting blade 3m and the minor cutting blade 3s and the shaft center of a drill is made not less than 0.2 times as large as the diameter D of the drill so that the stiffness of the drill can be maintained. Thereby, the cutting speed can be increased, and the safety can also be improved.
JP16058087A 1987-06-26 1987-06-26 Drill Expired - Lifetime JPH0659566B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16058087A JPH0659566B2 (en) 1987-06-26 1987-06-26 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16058087A JPH0659566B2 (en) 1987-06-26 1987-06-26 Drill

Publications (2)

Publication Number Publication Date
JPS645708A true JPS645708A (en) 1989-01-10
JPH0659566B2 JPH0659566B2 (en) 1994-08-10

Family

ID=15718036

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16058087A Expired - Lifetime JPH0659566B2 (en) 1987-06-26 1987-06-26 Drill

Country Status (1)

Country Link
JP (1) JPH0659566B2 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04159010A (en) * 1990-10-22 1992-06-02 Nisshin Kogu Seisakusho:Kk End mill
US5423640A (en) * 1992-09-24 1995-06-13 Sandvik Ab Drill
US5622462A (en) * 1995-04-11 1997-04-22 Credo Tool Company Twist drill bit
US5716172A (en) * 1994-05-13 1998-02-10 Mitsubishi Materials Corporation Drill
US6916139B2 (en) * 2001-07-10 2005-07-12 Mitsubishi Materials Corporation Drill
JP2008064242A (en) * 2006-09-08 2008-03-21 Toyo Seal Kogyo Kk Core bar manufacturing method for bearing sealing plate, core bar, and bearing sealing plate
US20110170973A1 (en) * 2008-05-16 2011-07-14 Guehring Ohg Multi-blade solid carbide drill
CN102357665A (en) * 2011-10-08 2012-02-22 深圳市金洲精工科技股份有限公司 Microbit and processing method thereof
WO2012006990A3 (en) * 2010-05-31 2012-03-08 Gühring Ohg Drilling tool
CN103221166A (en) * 2010-11-26 2013-07-24 株式会社钨钛合金 Small-diameter drill
US20140219737A1 (en) * 2011-09-06 2014-08-07 Osg Corporation Drill
US9511424B2 (en) 2011-11-04 2016-12-06 Osg Corporation Drill
JP2017185611A (en) * 2016-04-08 2017-10-12 トヨタ自動車株式会社 Female screw machining tool

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04159010A (en) * 1990-10-22 1992-06-02 Nisshin Kogu Seisakusho:Kk End mill
US5423640A (en) * 1992-09-24 1995-06-13 Sandvik Ab Drill
US5716172A (en) * 1994-05-13 1998-02-10 Mitsubishi Materials Corporation Drill
US5622462A (en) * 1995-04-11 1997-04-22 Credo Tool Company Twist drill bit
US6916139B2 (en) * 2001-07-10 2005-07-12 Mitsubishi Materials Corporation Drill
JP2008064242A (en) * 2006-09-08 2008-03-21 Toyo Seal Kogyo Kk Core bar manufacturing method for bearing sealing plate, core bar, and bearing sealing plate
US20110170973A1 (en) * 2008-05-16 2011-07-14 Guehring Ohg Multi-blade solid carbide drill
US9039336B2 (en) * 2008-05-16 2015-05-26 Guehring Ohg Multi-blade solid carbide drill
WO2012006990A3 (en) * 2010-05-31 2012-03-08 Gühring Ohg Drilling tool
CN103221166A (en) * 2010-11-26 2013-07-24 株式会社钨钛合金 Small-diameter drill
US20140219737A1 (en) * 2011-09-06 2014-08-07 Osg Corporation Drill
US9492877B2 (en) * 2011-09-06 2016-11-15 Osg Corporation Drill
CN102357665A (en) * 2011-10-08 2012-02-22 深圳市金洲精工科技股份有限公司 Microbit and processing method thereof
US9511424B2 (en) 2011-11-04 2016-12-06 Osg Corporation Drill
JP2017185611A (en) * 2016-04-08 2017-10-12 トヨタ自動車株式会社 Female screw machining tool

Also Published As

Publication number Publication date
JPH0659566B2 (en) 1994-08-10

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