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JPS5531536A - Twist drill - Google Patents

Twist drill

Info

Publication number
JPS5531536A
JPS5531536AJP10221878AJP10221878AJPS5531536AJP S5531536 AJPS5531536 AJP S5531536AJP 10221878 AJP10221878 AJP 10221878AJP 10221878 AJP10221878 AJP 10221878AJP S5531536 AJPS5531536 AJP S5531536A
Authority
JP
Japan
Prior art keywords
growing
scraps
edge
rake surface
existing
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
JP10221878A
Other languages
Japanese (ja)
Other versions
JPS6141681B2 (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 IndividualfiledCriticalIndividual
Priority to JP10221878ApriorityCriticalpatent/JPS5531536A/en
Publication of JPS5531536ApublicationCriticalpatent/JPS5531536A/en
Publication of JPS6141681B2publicationCriticalpatent/JPS6141681B2/ja
Grantedlegal-statusCriticalCurrent

Links

Landscapes

Abstract

PURPOSE: To entirely prevent the inner wall of a machined bore from scratch, etc. by wear at the edge, chipping, growing scraps existing at the constituted edge in such a way that cutting is done with use of a constituted edge, and growing scraps existing at the constituted edge are gradually expelled outward through the third rake surface.
CONSTITUTION: Provision of the third rake surface 8 ensuing after the peripheral extremity of the first rake surface 6 at the part where the second rake surface 7 intersects with the peripheral side 9 facilitates to form a passage for growing scraps 11' existing at the constituted edge 11 which have arrived at the peripheral extremity by sideslipping over the first rake surface 6, the adhered direction is changed to main chips 12, and these growing scraps 11' are expelled out the same as the main chips 12. This serves for preventing the bored inner wall from scratching by impalement of growing scraps existing at the constituted edge 11, and for obtaining specular machining surface.
COPYRIGHT: (C)1980,JPO&Japio
JP10221878A1978-08-211978-08-21Twist drillGrantedJPS5531536A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP10221878AJPS5531536A (en)1978-08-211978-08-21Twist drill

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP10221878AJPS5531536A (en)1978-08-211978-08-21Twist drill

Publications (2)

Publication NumberPublication Date
JPS5531536Atrue JPS5531536A (en)1980-03-05
JPS6141681B2 JPS6141681B2 (en)1986-09-17

Family

ID=14321517

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP10221878AGrantedJPS5531536A (en)1978-08-211978-08-21Twist drill

Country Status (1)

CountryLink
JP (1)JPS5531536A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS59161208A (en)*1983-03-031984-09-12Daijietsuto Kogyo Kk milling tool
US4605347A (en)*1982-12-271986-08-12Lockheed Missiles & Space Company, Inc.High speed drill reamer
US5609447A (en)*1993-11-151997-03-11Rogers Tool Works, Inc.Surface decarburization of a drill bit
JP2011513083A (en)*2008-03-102011-04-28ケンナメタル インコーポレイテッド Cutting tool with chisel edge
CN102601438A (en)*2012-04-092012-07-25合肥波林新材料有限公司Two-edge special end milling cutter for through groove
US20180043441A1 (en)*2015-03-302018-02-15Mitsubishi Hitachi Tool Engineering, Ltd.Drill
CN114799286A (en)*2021-01-272022-07-29株式会社泰珂洛Drill bit

Cited By (11)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US4605347A (en)*1982-12-271986-08-12Lockheed Missiles & Space Company, Inc.High speed drill reamer
JPS59161208A (en)*1983-03-031984-09-12Daijietsuto Kogyo Kk milling tool
US5609447A (en)*1993-11-151997-03-11Rogers Tool Works, Inc.Surface decarburization of a drill bit
JP2011513083A (en)*2008-03-102011-04-28ケンナメタル インコーポレイテッド Cutting tool with chisel edge
CN102601438A (en)*2012-04-092012-07-25合肥波林新材料有限公司Two-edge special end milling cutter for through groove
US20180043441A1 (en)*2015-03-302018-02-15Mitsubishi Hitachi Tool Engineering, Ltd.Drill
US10279398B2 (en)*2015-03-302019-05-07Mitsubishi Hitachi Tool Engineering, Ltd.Drill
CN114799286A (en)*2021-01-272022-07-29株式会社泰珂洛Drill bit
EP4035813A1 (en)*2021-01-272022-08-03Tungaloy CorporationDrill
CN114799286B (en)*2021-01-272024-01-30株式会社泰珂洛Drill bit
US12042871B2 (en)2021-01-272024-07-23Tungaloy CorporationDrill

Also Published As

Publication numberPublication date
JPS6141681B2 (en)1986-09-17

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