FR2421022A1 - Blade for cutting round holes by enlargement - has two inclined lips with recessed cutting faces bounded by shoulders which curl chips - Google Patents

Blade for cutting round holes by enlargement - has two inclined lips with recessed cutting faces bounded by shoulders which curl chips

Info

Publication number
FR2421022A1
FR2421022A1 FR7809503A FR7809503A FR2421022A1 FR 2421022 A1 FR2421022 A1 FR 2421022A1 FR 7809503 A FR7809503 A FR 7809503A FR 7809503 A FR7809503 A FR 7809503A FR 2421022 A1 FR2421022 A1 FR 2421022A1
Authority
FR
France
Prior art keywords
cutting
faces
blade
shoulders
enlargement
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
FR7809503A
Other languages
French (fr)
Other versions
FR2421022B1 (en
Inventor
Jean-Claude Tanguy
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.)
Centre Technique des Industries Mecaniques CETIM
Original Assignee
Centre Technique des Industries Mecaniques CETIM
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 Centre Technique des Industries Mecaniques CETIM filed Critical Centre Technique des Industries Mecaniques CETIM
Priority to FR7809503A priority Critical patent/FR2421022A1/en
Publication of FR2421022A1 publication Critical patent/FR2421022A1/en
Application granted granted Critical
Publication of FR2421022B1 publication Critical patent/FR2421022B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/48—Chip breakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/50—Drilling tools comprising cutting inserts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)

Abstract

The blade has cutting faces (11) and plane clearance faces (3, 4, 5, 6) the frontal clearance faces (3, 4) including chip breaker grooves (7, 8). The plane faces (11) are set back from the major plane leading top faces (12) to form two inclined cutting lips (1, 2), the setting back being effected by a shoulder (13). A curve may be provided in the reentrant angle between the shoulder and the cutting face, the top (12) and cutting faces (11) extending to define the specified acute cutting angle. The grooves may be located a differential radial distances (mn) in the respective lips.
FR7809503A 1978-03-31 1978-03-31 Blade for cutting round holes by enlargement - has two inclined lips with recessed cutting faces bounded by shoulders which curl chips Granted FR2421022A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7809503A FR2421022A1 (en) 1978-03-31 1978-03-31 Blade for cutting round holes by enlargement - has two inclined lips with recessed cutting faces bounded by shoulders which curl chips

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7809503A FR2421022A1 (en) 1978-03-31 1978-03-31 Blade for cutting round holes by enlargement - has two inclined lips with recessed cutting faces bounded by shoulders which curl chips

Publications (2)

Publication Number Publication Date
FR2421022A1 true FR2421022A1 (en) 1979-10-26
FR2421022B1 FR2421022B1 (en) 1982-10-29

Family

ID=9206515

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7809503A Granted FR2421022A1 (en) 1978-03-31 1978-03-31 Blade for cutting round holes by enlargement - has two inclined lips with recessed cutting faces bounded by shoulders which curl chips

Country Status (1)

Country Link
FR (1) FR2421022A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998005459A1 (en) * 1996-08-08 1998-02-12 Vermont American Corporation Spade bit
WO2001000376A1 (en) * 1999-06-24 2001-01-04 The Mibro Group Spade drill bit
US10532412B2 (en) 2016-09-23 2020-01-14 Milwaukee Electric Tool Corporation Hole saw arbor assembly
US10730119B2 (en) 2017-01-06 2020-08-04 Milwaukee Electric Tool Corporation Hole saw
USD965653S1 (en) 2017-08-15 2022-10-04 Milwaukee Electric Tool Corporation Hole saw

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191517961A (en) * 1915-01-23 Lorraine Anciens Ets Dietrich Improvements in Drills.
GB191419371A (en) * 1914-01-15 1915-02-25 Bengt Magnus Wilhelm Hanson Improvements in or relating to Metal Working Drills.
GB550306A (en) * 1942-01-19 1943-01-01 Herbert Ltd A Improvements relating to drills and to cutters therefor
CH230307A (en) * 1942-10-23 1943-12-31 Margairaz Richard Drilling tool.
US3293727A (en) * 1961-04-12 1966-12-27 Bilt Rite Tool & Machine Co Cutting tool
US3460409A (en) * 1967-05-10 1969-08-12 Allied Machine & Eng Corp Chip breaker for spade drill
DE2422452A1 (en) * 1974-05-09 1975-11-20 Madison Ind Gmbh Boring cutter with lateral guide - has diagonal lateral guide ribs to ensure high lateral stability
FR2317989A1 (en) * 1975-07-14 1977-02-11 Amtel Inc POINTED DRILLING TOOL
US4047826A (en) * 1976-05-17 1977-09-13 Bennett John T Drill having indexable replaceable insert tip

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191419371A (en) * 1914-01-15 1915-02-25 Bengt Magnus Wilhelm Hanson Improvements in or relating to Metal Working Drills.
GB191517961A (en) * 1915-01-23 Lorraine Anciens Ets Dietrich Improvements in Drills.
GB550306A (en) * 1942-01-19 1943-01-01 Herbert Ltd A Improvements relating to drills and to cutters therefor
CH230307A (en) * 1942-10-23 1943-12-31 Margairaz Richard Drilling tool.
US3293727A (en) * 1961-04-12 1966-12-27 Bilt Rite Tool & Machine Co Cutting tool
US3460409A (en) * 1967-05-10 1969-08-12 Allied Machine & Eng Corp Chip breaker for spade drill
DE2422452A1 (en) * 1974-05-09 1975-11-20 Madison Ind Gmbh Boring cutter with lateral guide - has diagonal lateral guide ribs to ensure high lateral stability
FR2317989A1 (en) * 1975-07-14 1977-02-11 Amtel Inc POINTED DRILLING TOOL
US4047826A (en) * 1976-05-17 1977-09-13 Bennett John T Drill having indexable replaceable insert tip

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998005459A1 (en) * 1996-08-08 1998-02-12 Vermont American Corporation Spade bit
WO2001000376A1 (en) * 1999-06-24 2001-01-04 The Mibro Group Spade drill bit
US6227774B1 (en) 1999-06-24 2001-05-08 Tetrason Diversified Corp. Spade drill bit
US10532412B2 (en) 2016-09-23 2020-01-14 Milwaukee Electric Tool Corporation Hole saw arbor assembly
US11154940B2 (en) 2016-09-23 2021-10-26 Milwaukee Electric Tool Corporation Hole saw arbor assembly
US10730119B2 (en) 2017-01-06 2020-08-04 Milwaukee Electric Tool Corporation Hole saw
US11559840B2 (en) 2017-01-06 2023-01-24 Milwaukee Electric Tool Corporation Hole saw
USD965653S1 (en) 2017-08-15 2022-10-04 Milwaukee Electric Tool Corporation Hole saw
USD973733S1 (en) 2017-08-15 2022-12-27 Milwaukee Electric Tool Corporation Hole saw

Also Published As

Publication number Publication date
FR2421022B1 (en) 1982-10-29

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Legal Events

Date Code Title Description
CL Concession to grant licences
RL Notice of termination of a licence
ST Notification of lapse