JPS55106710A - Drill - Google Patents

Drill

Info

Publication number
JPS55106710A
JPS55106710A JP1108879A JP1108879A JPS55106710A JP S55106710 A JPS55106710 A JP S55106710A JP 1108879 A JP1108879 A JP 1108879A JP 1108879 A JP1108879 A JP 1108879A JP S55106710 A JPS55106710 A JP S55106710A
Authority
JP
Japan
Prior art keywords
drill
twist
shank
chips
twist groove
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
JP1108879A
Other languages
Japanese (ja)
Other versions
JPS6158245B2 (en
Inventor
Toshiaki Hosoi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP1108879A priority Critical patent/JPS55106710A/en
Publication of JPS55106710A publication Critical patent/JPS55106710A/en
Publication of JPS6158245B2 publication Critical patent/JPS6158245B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)

Abstract

PURPOSE: To improve the finish of drilled hole by increasing the depth of the twist groove of a twist drill toward the shank to provide smooth elimination of chips.
CONSTITUTION: The twist groove 2 of a drill 2 having cutting edges 3 is formed so that the depth increases while the width decreases toward the shank. This construction of the twist groove 2 applies extremely small frictional resistance to chips which are twisted along the curve 40 while they are eliminated.
COPYRIGHT: (C)1980,JPO&Japio
JP1108879A 1979-02-01 1979-02-01 Drill Granted JPS55106710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1108879A JPS55106710A (en) 1979-02-01 1979-02-01 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1108879A JPS55106710A (en) 1979-02-01 1979-02-01 Drill

Publications (2)

Publication Number Publication Date
JPS55106710A true JPS55106710A (en) 1980-08-15
JPS6158245B2 JPS6158245B2 (en) 1986-12-10

Family

ID=11768221

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1108879A Granted JPS55106710A (en) 1979-02-01 1979-02-01 Drill

Country Status (1)

Country Link
JP (1) JPS55106710A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4722644A (en) * 1985-03-08 1988-02-02 Hawera Prazisionswerkzeuge Gmbh Multi-lip drill
US5312209A (en) * 1991-12-16 1994-05-17 Sandvik, Ab Drill
US7201543B2 (en) * 2000-06-02 2007-04-10 Kennametal Inc. Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill
US9199315B2 (en) 2000-06-02 2015-12-01 Kennametal Inc. Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4722644A (en) * 1985-03-08 1988-02-02 Hawera Prazisionswerkzeuge Gmbh Multi-lip drill
US5312209A (en) * 1991-12-16 1994-05-17 Sandvik, Ab Drill
US7201543B2 (en) * 2000-06-02 2007-04-10 Kennametal Inc. Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill
US9199315B2 (en) 2000-06-02 2015-12-01 Kennametal Inc. Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill

Also Published As

Publication number Publication date
JPS6158245B2 (en) 1986-12-10

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