JPS5548511A - Drill - Google Patents

Drill

Info

Publication number
JPS5548511A
JPS5548511A JP12175678A JP12175678A JPS5548511A JP S5548511 A JPS5548511 A JP S5548511A JP 12175678 A JP12175678 A JP 12175678A JP 12175678 A JP12175678 A JP 12175678A JP S5548511 A JPS5548511 A JP S5548511A
Authority
JP
Japan
Prior art keywords
cutting edge
drill
face
angle
dimensions
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.)
Pending
Application number
JP12175678A
Other languages
Japanese (ja)
Inventor
Seiji Nakatani
Hiroshi Fukuyoshi
Shoji Okui
Takeshi Asai
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP12175678A priority Critical patent/JPS5548511A/en
Publication of JPS5548511A publication Critical patent/JPS5548511A/en
Pending 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
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/18—Configuration of the drill point

Abstract

PURPOSE:To provide this drill with strength by forming core thickness (web thickness) in the dimensions of 30-50% of an outer diameter of the drill, to smoothly discharge chips by mounting a chip pocket to a nose portion and to improve the strength of a cutting edge portion by devising tool materials and edge shapes. CONSTITUTION:A one or total portion of a drill cutting edge portion 1 is made up by a comented carbide alloy containing the total quantity of TiC+TaNbC in not less than 6% weight ratio. Core thickness (web thickness) W is designed in the dimensions of 0.3-0.5XD. A tortion groove 3 in twisted at the angles of 20 deg.- 45 deg. - preferably, in the right direction of 25 deg.-40 deg. - in order to facilitate the discharge of chips produced by means of the cutting edge 1. A chip pocket 6 surrounded by means of a face 4 and a side-wall 5 is installed to a nose portion 2. Here, an angle beta built up with a shaft shall be 0 deg.-30 deg. and an angle gamma formed with the face 4 90 deg.-120 deg. in the side-wall 5, the second surface that an angle of relief delta is 5 deg.-15 deg. is installed and a straight-line cutting edge consisting of a line that the face 4 and the second surface cross is rounded in 0.03-0.15mm radii.
JP12175678A 1978-10-02 1978-10-02 Drill Pending JPS5548511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12175678A JPS5548511A (en) 1978-10-02 1978-10-02 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12175678A JPS5548511A (en) 1978-10-02 1978-10-02 Drill

Publications (1)

Publication Number Publication Date
JPS5548511A true JPS5548511A (en) 1980-04-07

Family

ID=14819100

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12175678A Pending JPS5548511A (en) 1978-10-02 1978-10-02 Drill

Country Status (1)

Country Link
JP (1) JPS5548511A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5771714A (en) * 1980-10-23 1982-05-04 Toshiba Corp Drill for hard to cutting material
JPS60114407A (en) * 1983-11-24 1985-06-20 Sumitomo Electric Ind Ltd Drill
JPS60117013U (en) * 1984-01-18 1985-08-07 三菱マテリアル株式会社 carbide drill
US4605347A (en) * 1982-12-27 1986-08-12 Lockheed Missiles & Space Company, Inc. High speed drill reamer
US4756650A (en) * 1986-11-26 1988-07-12 Kabushiki Kaisha Kobe Seiko Sho Twist drill
JPH01306112A (en) * 1988-06-03 1989-12-11 Toshiba Tungaloy Co Ltd Small diameter drill for machining printedboard
CN113692127A (en) * 2021-08-18 2021-11-23 东莞市若美电子科技有限公司 Method for controlling edge color difference of transparent screen plate

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5771714A (en) * 1980-10-23 1982-05-04 Toshiba Corp Drill for hard to cutting material
US4605347A (en) * 1982-12-27 1986-08-12 Lockheed Missiles & Space Company, Inc. High speed drill reamer
JPS60114407A (en) * 1983-11-24 1985-06-20 Sumitomo Electric Ind Ltd Drill
JPS6158246B2 (en) * 1983-11-24 1986-12-10 Sumitomo Electric Industries
JPS60117013U (en) * 1984-01-18 1985-08-07 三菱マテリアル株式会社 carbide drill
US4756650A (en) * 1986-11-26 1988-07-12 Kabushiki Kaisha Kobe Seiko Sho Twist drill
JPH01306112A (en) * 1988-06-03 1989-12-11 Toshiba Tungaloy Co Ltd Small diameter drill for machining printedboard
CN113692127A (en) * 2021-08-18 2021-11-23 东莞市若美电子科技有限公司 Method for controlling edge color difference of transparent screen plate

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