JPS6451218A - Drill - Google Patents

Drill

Info

Publication number
JPS6451218A
JPS6451218A JP20493787A JP20493787A JPS6451218A JP S6451218 A JPS6451218 A JP S6451218A JP 20493787 A JP20493787 A JP 20493787A JP 20493787 A JP20493787 A JP 20493787A JP S6451218 A JPS6451218 A JP S6451218A
Authority
JP
Japan
Prior art keywords
oil
drill
filler port
tip end
oil filler
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
JP20493787A
Other languages
Japanese (ja)
Inventor
Kojiro Imanaga
Hideji Hosono
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.)
Mitsubishi Metal Corp
Original Assignee
Mitsubishi Metal Corp
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 Mitsubishi Metal Corp filed Critical Mitsubishi Metal Corp
Priority to JP20493787A priority Critical patent/JPS6451218A/en
Publication of JPS6451218A publication Critical patent/JPS6451218A/en
Pending legal-status Critical Current

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  • Drilling Tools (AREA)

Abstract

PURPOSE:To enable the amount of oil supply to a cutting edge to be secured even when oil pressure is dropped because of numbers of drills used at the same time by forming an oil filler port in an ellipse or a polygon shape in cross section, and twisting it to the same direction as the rotating one as it goes up rearward from its tip end. CONSTITUTION:A drill 31 is furnished with an oil filter port 33 arranged at the axial center P of a base metal 32, and formed in an ellipse shape in cross section. And the oil filler port 33 is twisted to the same direction as the rotating one of the drill 31 as it goes up rearward from its tip end. In the second place, when cutting is processed by the drill 31 while oil is being supplied to the oil filler port 33, oil flowing in the oil filler port 33 is forwarded by the rotation of the drill to the tip end side alongside the circumferential surface of the twisted oil filler port in the ellipse shape in cross section. The rotation of the drill causes oil flowing within the oil filler port 33 to be forwarded to the tip end side as described above, thereby enabling the amount of oil supply to be sufficiently secured even when the pressure of an oil supply source is dropped.
JP20493787A 1987-08-18 1987-08-18 Drill Pending JPS6451218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20493787A JPS6451218A (en) 1987-08-18 1987-08-18 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20493787A JPS6451218A (en) 1987-08-18 1987-08-18 Drill

Publications (1)

Publication Number Publication Date
JPS6451218A true JPS6451218A (en) 1989-02-27

Family

ID=16498824

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20493787A Pending JPS6451218A (en) 1987-08-18 1987-08-18 Drill

Country Status (1)

Country Link
JP (1) JPS6451218A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011090551A2 (en) * 2009-12-29 2011-07-28 Kennametal Inc. Rotary cutting tool having sealed margins and method of making same
WO2012035070A1 (en) * 2010-09-17 2012-03-22 Element Six Limited Twist drill assembly, components for same and method for making same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011090551A2 (en) * 2009-12-29 2011-07-28 Kennametal Inc. Rotary cutting tool having sealed margins and method of making same
WO2011090551A3 (en) * 2009-12-29 2011-09-15 Kennametal Inc. Rotary cutting tool having sealed margins and method of making same
WO2012035070A1 (en) * 2010-09-17 2012-03-22 Element Six Limited Twist drill assembly, components for same and method for making same

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