CH672171A5 - - Google Patents

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Publication number
CH672171A5
CH672171A5 CH17/87A CH1787A CH672171A5 CH 672171 A5 CH672171 A5 CH 672171A5 CH 17/87 A CH17/87 A CH 17/87A CH 1787 A CH1787 A CH 1787A CH 672171 A5 CH672171 A5 CH 672171A5
Authority
CH
Switzerland
Prior art keywords
screw
cutting
cutting edge
groove
axis
Prior art date
Application number
CH17/87A
Other languages
English (en)
French (fr)
Inventor
George Jesson
Original Assignee
Emhart Ind
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 Emhart Ind filed Critical Emhart Ind
Publication of CH672171A5 publication Critical patent/CH672171A5/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
    • F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/56—Making machine elements screw-threaded elements
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0021—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being metal, e.g. sheet-metal or aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0084—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by geometric details of the tip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/18—Configuration of the drill point
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Forging (AREA)
  • Drilling Tools (AREA)
  • Connection Of Plates (AREA)
CH17/87A 1986-01-09 1987-01-06 CH672171A5 (2)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81730386A 1986-01-09 1986-01-09

Publications (1)

Publication Number Publication Date
CH672171A5 true CH672171A5 (2) 1989-10-31

Family

ID=25222773

Family Applications (1)

Application Number Title Priority Date Filing Date
CH17/87A CH672171A5 (2) 1986-01-09 1987-01-06

Country Status (8)

Country Link
JP (1) JPS62242111A (2)
AU (1) AU586060B2 (2)
CA (1) CA1285798C (2)
CH (1) CH672171A5 (2)
DE (1) DE3700499C2 (2)
FR (1) FR2592693B1 (2)
GB (1) GB2185915B (2)
IT (1) IT1215326B (2)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4802807A (en) * 1988-04-14 1989-02-07 Illinois Tool Works Inc. Threaded fastener
EP1764519A1 (en) * 2005-09-20 2007-03-21 Taiwan Shan Yin International Co., Ltd. Screw with multiple cutting ridges in end section
DE102007052152A1 (de) 2007-10-31 2009-05-07 Robert Bosch Gmbh Navigationssystem
TW201350690A (zh) * 2012-06-12 2013-12-16 Yuan-Qi Li 螺絲鑽尾結構
JP6282160B2 (ja) * 2014-04-07 2018-02-21 北村精工株式会社 ドリルねじ
TW201716697A (zh) * 2015-11-11 2017-05-16 xiao-wen Huang 自攻螺絲鑽尾結構

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD72426A (2) *
GB940206A (en) * 1960-06-14 1963-10-23 Brooke Tool Mfg Company Ltd Improvements relating to drills
US3199381A (en) * 1963-03-04 1965-08-10 Bruce A Mackey Twist drill
US3463045A (en) * 1966-05-10 1969-08-26 Illinois Tool Works Drilling screw
US3395603A (en) * 1966-09-13 1968-08-06 Parker Kaion Corp Rotary threaded fasteners
FR1536635A (fr) * 1966-09-13 1968-08-16 Parker Kalon Corp Dispositif de fixation fileté rotatif ou vis
US3550255A (en) * 1968-07-05 1970-12-29 Parker Kalon Corp Method of making rotary threaded fasteners
AT350334B (de) * 1977-01-19 1979-05-25 Sfs Stadler Ag Selbstbohrende schraube
JPS61567Y2 (2) * 1978-01-18 1986-01-10
US4295768A (en) * 1979-09-21 1981-10-20 Usm Corporation Chip breaker screws
GB2100628B (en) * 1981-06-25 1985-04-11 Shinjo Seisakusho Yk A drill screw
NZ202991A (en) * 1982-02-05 1985-11-08 Usm Corp Rotary threaded drilling and thread-forming screw with radiused drag surfaces in drilling portion
JPS597046A (ja) * 1982-07-03 1984-01-14 日東紡績株式会社 レ−ザ光線によりシヤ−プな切断が可能な合成樹脂積層板
JPS6024981U (ja) * 1983-07-27 1985-02-20 小島　隆男 吸排気弁

Also Published As

Publication number Publication date
GB2185915B (en) 1989-11-22
IT8719016A0 (it) 1987-01-08
IT1215326B (it) 1990-02-08
GB2185915A (en) 1987-08-05
DE3700499C2 (de) 1996-07-11
JPS62242111A (ja) 1987-10-22
FR2592693A1 (fr) 1987-07-10
AU586060B2 (en) 1989-06-29
DE3700499A1 (de) 1987-07-16
FR2592693B1 (fr) 1991-05-31
GB8700157D0 (en) 1987-02-11
CA1285798C (en) 1991-07-09
AU6716087A (en) 1987-07-16

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Legal Events

Date Code Title Description
NV New agent

Ref country code: CH

Representative=s name: DR. JOACHIM LAUER, PATENTANWALT

PFA Name/firm changed

Owner name: NEWFREY LLC

Free format text: EMHART LLC#DRUMMOND PLAZA OFFICE PARK, 1423, KIRKWOOD HIGHWAY#NEWARK, DELAWARE 19711 (US) -TRANSFERTO- NEWFREY LLC#DRUMMOND PLAZA OFFICE PARK, 1423, KIRKWOOD HIGHWAY#NEWARK, DELAWARE 19711 (US)

Owner name: EMHART LLC

Free format text: EMHART INDUSTRIES, INC.#426 COLT HIGHWAY#FARMINGTON/CT (US) -TRANSFER TO- EMHART LLC#DRUMMOND PLAZAOFFICE PARK, 1423, KIRKWOOD HIGHWAY#NEWARK, DELAWARE 19711 (US)

PL Patent ceased