GB2018643A - A twist drill made of hard metal in particular for the drilling of printed circuit boards - Google Patents

A twist drill made of hard metal in particular for the drilling of printed circuit boards

Info

Publication number
GB2018643A
GB2018643A GB7909013A GB7909013A GB2018643A GB 2018643 A GB2018643 A GB 2018643A GB 7909013 A GB7909013 A GB 7909013A GB 7909013 A GB7909013 A GB 7909013A GB 2018643 A GB2018643 A GB 2018643A
Authority
GB
United Kingdom
Prior art keywords
shank
drilling
printed circuit
circuit boards
twist drill
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
GB7909013A
Other versions
GB2018643B (en
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.)
Hawera Probst Hartmetall Werk Zeugfabrik Ravensburgh KG
Robert Bosch Power Tools GmbH
Original Assignee
Hawera Probst Hartmetall Werk Zeugfabrik Ravensburgh KG
Hawera Probst GmbH
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 Hawera Probst Hartmetall Werk Zeugfabrik Ravensburgh KG, Hawera Probst GmbH filed Critical Hawera Probst Hartmetall Werk Zeugfabrik Ravensburgh KG
Publication of GB2018643A publication Critical patent/GB2018643A/en
Application granted granted Critical
Publication of GB2018643B publication Critical patent/GB2018643B/en
Expired 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
    • B23B51/02—Twist drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/005—Cylindrical shanks of tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2231/00—Details of chucks, toolholder shanks or tool shanks
    • B23B2231/02—Features of shanks of tools not relating to the operation performed by the tool
    • B23B2231/0204—Connection of shanks to working elements of tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2240/00—Details of connections of tools or workpieces
    • B23B2240/28—Shrink-fitted connections, i.e. using heating and cooling to produce interference fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/02—Connections between shanks and removable cutting heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/011—Micro drills
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/0011—Working of insulating substrates or insulating layers
    • H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
    • H05K3/0047—Drilling of holes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Drilling And Boring (AREA)

Abstract

A twist drill intended primarily for use in the drilling of printed circuit boards comprises a rigid clamping shank (4) having a blind bore (5) in the remote end thereof and an oversize drill shank (3) arranged as a press fit in the blind bore. That part of the drill shank (3) intended for engagement with the blind bore (5) has a roughened outer surface (8) thereto to improve the drive transmission characteristic of the bore/shank interface. The inner drill shank end (7) has a cutting edge (6) to enable the press fit. The outer clamping shank surface is hardened. <IMAGE>
GB7909013A 1978-03-18 1979-03-14 Twist drill made of hard metal in particular for the drilling of printed circuit boards Expired GB2018643B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782811977 DE2811977A1 (en) 1978-03-18 1978-03-18 HARD METAL TWIST DRILLS, IN PARTICULAR. FOR DRILLING CIRCUIT BOARDS

Publications (2)

Publication Number Publication Date
GB2018643A true GB2018643A (en) 1979-10-24
GB2018643B GB2018643B (en) 1982-04-28

Family

ID=6034882

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7909013A Expired GB2018643B (en) 1978-03-18 1979-03-14 Twist drill made of hard metal in particular for the drilling of printed circuit boards

Country Status (4)

Country Link
JP (1) JPS54129588A (en)
CH (1) CH635016A5 (en)
DE (1) DE2811977A1 (en)
GB (1) GB2018643B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982004412A1 (en) * 1981-06-16 1982-12-23 Friedli Paul Drilling bit and utilization of this bit for the drilling of printed circuits
EP0127393A2 (en) * 1983-05-23 1984-12-05 Federal-Mogul Corporation Flexible microdrill
CN109379845A (en) * 2018-11-02 2019-02-22 珠海杰赛科技有限公司 A kind of multilayer circuit board processing technology containing PTFE
CN109600927A (en) * 2019-01-03 2019-04-09 六安煜晟电子科技有限公司 A kind of novel PCB drill point steel handle

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3232686A1 (en) * 1982-09-02 1984-03-08 Hartmetallwerkzeugfabrik Andreas Maier GmbH + Co KG, 7959 Schwendi ROTATIONAL CUTTING TOOL AND METHOD FOR THE PRODUCTION THEREOF
JPS6239912U (en) * 1985-08-28 1987-03-10
US4818161A (en) * 1985-10-15 1989-04-04 Cook Harold D Tool holder system and method of use
JPH0247139U (en) * 1988-09-22 1990-03-30
JP2890592B2 (en) * 1989-01-26 1999-05-17 住友電気工業株式会社 Carbide alloy drill
DE4314868C2 (en) * 1993-05-05 2002-05-16 Hawera Probst Kg Hartmetall drilling
DE19800097A1 (en) * 1997-01-31 1998-08-06 Mitsubishi Materials Corp Manufacturing procedure for cutting tool
US6382888B2 (en) 1997-07-09 2002-05-07 Harold D Cook Vibration dampened spindle and tool holder assembly
US5979912A (en) * 1997-07-09 1999-11-09 Cook; Harold D. Heavy-metal shrink fit cutting tool mount
US5975816A (en) * 1997-07-09 1999-11-02 Cook; Harold D. Harmonic dampener for rotary tool holder
WO1999002297A1 (en) * 1997-07-09 1999-01-21 Cook Harold D Machine tool extension and method of forming the same
US6234729B1 (en) 1999-04-28 2001-05-22 Harold D. Cook Shrink fit shoulder interface
US6161309A (en) * 1999-04-28 2000-12-19 Cook; Harold D. Heat shrink tool holder cooler
US6109842A (en) * 1999-08-03 2000-08-29 Cook; Harold D. Tool holder with harmonic dampening drive mechanism
US6425716B1 (en) 2000-04-13 2002-07-30 Harold D. Cook Heavy metal burr tool
US6572311B2 (en) * 2000-07-24 2003-06-03 Maxtech Manufacturing Inc. Two-piece drill bits
AT14084U1 (en) * 2013-10-16 2015-04-15 Ceratizit Austria Gmbh Machining tool and method for producing a machining tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982004412A1 (en) * 1981-06-16 1982-12-23 Friedli Paul Drilling bit and utilization of this bit for the drilling of printed circuits
EP0127393A2 (en) * 1983-05-23 1984-12-05 Federal-Mogul Corporation Flexible microdrill
EP0127393A3 (en) * 1983-05-23 1985-11-06 Federal-Mogul Corporation Flexible microdrill
CN109379845A (en) * 2018-11-02 2019-02-22 珠海杰赛科技有限公司 A kind of multilayer circuit board processing technology containing PTFE
CN109600927A (en) * 2019-01-03 2019-04-09 六安煜晟电子科技有限公司 A kind of novel PCB drill point steel handle

Also Published As

Publication number Publication date
JPS54129588A (en) 1979-10-08
GB2018643B (en) 1982-04-28
CH635016A5 (en) 1983-03-15
DE2811977A1 (en) 1979-09-27

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee