JPS57132908A - Drill - Google Patents

Drill

Info

Publication number
JPS57132908A
JPS57132908A JP56018519A JP1851981A JPS57132908A JP S57132908 A JPS57132908 A JP S57132908A JP 56018519 A JP56018519 A JP 56018519A JP 1851981 A JP1851981 A JP 1851981A JP S57132908 A JPS57132908 A JP S57132908A
Authority
JP
Japan
Prior art keywords
drill
arc
grooves
chips
scratched
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
JP56018519A
Other languages
Japanese (ja)
Inventor
Shoichi Ishiyama
Kiyoaki Sekikawa
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.)
Asahi Tec Corp
Original Assignee
Asahi Malleable Iron Co 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 Asahi Malleable Iron Co Ltd filed Critical Asahi Malleable Iron Co Ltd
Priority to JP56018519A priority Critical patent/JPS57132908A/en
Publication of JPS57132908A publication Critical patent/JPS57132908A/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
    • B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
    • B23B2222/04—Aluminium
    • 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

Landscapes

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

Abstract

PURPOSE:To prevent the inside surface of a hole from being scratched by chips made by a drill for soft metal such aluminum, by arc-curving the grooves of the drill, along which its cutting edges extend, to cause the chips to smoothly flow into the grooves directly. CONSTITUTION:Two grooves 12 with a prescribed twisting angle are provided on the peripheral surface of the body 11 of a drill. The part 121 of each groove 12, along which the cutting edge 13 extends, is shaped between the chisel edge 14 and the margin 15, in accordance with an arc, the radius R1 of curvature of which is equal to a half of the diameter of the drill body 11. The other part of the groove 12 is shaped up to the peripheral relief section of the drill, in accordance with an arc, the radius R2 of curvature of which is equal to seven sixths of the diameter of the drill body 11. As a result, when the drill is viewed in the diametral direction, the cutting edges 13, 13 are concave upwards and their cutting points 131 are acutely protruded. For that reason, a hole is drilled so that its inside surface is not scratched by the chips.
JP56018519A 1981-02-10 1981-02-10 Drill Pending JPS57132908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56018519A JPS57132908A (en) 1981-02-10 1981-02-10 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56018519A JPS57132908A (en) 1981-02-10 1981-02-10 Drill

Publications (1)

Publication Number Publication Date
JPS57132908A true JPS57132908A (en) 1982-08-17

Family

ID=11973868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56018519A Pending JPS57132908A (en) 1981-02-10 1981-02-10 Drill

Country Status (1)

Country Link
JP (1) JPS57132908A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60114407A (en) * 1983-11-24 1985-06-20 Sumitomo Electric Ind Ltd Drill
US4529341A (en) * 1982-09-29 1985-07-16 Hughes Helicopters, Inc. Drill bit for Kevlar laminates
FR2747950A1 (en) * 1996-04-30 1997-10-31 Tech Outillage Soc Nouv Drill for motor vehicle brake disc rotors
US6923602B2 (en) 2002-04-03 2005-08-02 Ogo Corporation Drill having construction for reducing thrust load in drilling operation, and method of manufacturing the drill
US7252465B2 (en) * 2005-01-05 2007-08-07 Sandvik Intellectual Property Ab Drill for chip removing machining
JP2011104751A (en) * 2009-11-20 2011-06-02 Mitsubishi Materials Corp Drill for spot facing
CN103157834A (en) * 2013-03-28 2013-06-19 苏州阿诺精密切削技术股份有限公司 Drill bit with low chisel edge

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54131192A (en) * 1978-04-04 1979-10-12 Atsuo Unosawa Twist drill

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54131192A (en) * 1978-04-04 1979-10-12 Atsuo Unosawa Twist drill

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529341A (en) * 1982-09-29 1985-07-16 Hughes Helicopters, Inc. Drill bit for Kevlar laminates
JPS60114407A (en) * 1983-11-24 1985-06-20 Sumitomo Electric Ind Ltd Drill
JPS6158246B2 (en) * 1983-11-24 1986-12-10 Sumitomo Electric Industries
FR2747950A1 (en) * 1996-04-30 1997-10-31 Tech Outillage Soc Nouv Drill for motor vehicle brake disc rotors
US6923602B2 (en) 2002-04-03 2005-08-02 Ogo Corporation Drill having construction for reducing thrust load in drilling operation, and method of manufacturing the drill
US7252465B2 (en) * 2005-01-05 2007-08-07 Sandvik Intellectual Property Ab Drill for chip removing machining
JP2011104751A (en) * 2009-11-20 2011-06-02 Mitsubishi Materials Corp Drill for spot facing
CN103157834A (en) * 2013-03-28 2013-06-19 苏州阿诺精密切削技术股份有限公司 Drill bit with low chisel edge

Similar Documents

Publication Publication Date Title
DK304884A (en) VENTILSAEDESTYR
CA1285266C (en) Rotatable cutting bit
GB1144035A (en) Twist drill
GB2193913B (en) Self-centering drill bit with pilot tip
BR8801744A (en) FITTING ASSEMBLY FOR THE SEALING BETWEEN AN INTERNAL CHUCK AND A POCO COATING, AND APPLIANCE FOR THE SETTING OF A PROBE GUIDE AND FOR CHANGING DRILLING THROUGH A PITCH COATING WITH A SINGLE DRILL TRAVEL
CA2026582A1 (en) Drill
JPS57132908A (en) Drill
PL243005A1 (en) Single-blade reamer
JPS57184616A (en) Drill
ES285011U (en) Pipe connector.
ATE136832T1 (en) TWIST DRILL
US3028773A (en) Drill
ES295913U (en) Screw with flow passage
GB2035158B (en) Bit for drilling stone
KR850004138A (en) Mining Drill Bit
GB2011286A (en) Rock drill bit
JPS56164212A (en) Grooved screw and its driver
ES295802U (en) Rotary spiral-screw floats for nautical craft or the like.
IT9044819A0 (en) TOOL WITH FLOATING TOOL TO CARRY OUT DRILLING, BORING, COUNTERSINKING AND SIMILAR OPERATIONS AT CONTROLLED DEPTH, WITH THE USE OF JIGS.
JPS57107716A (en) Drill
GB1378868A (en) Countersinker assembly
JPS57156109A (en) Drilling tool for eccentric rotary cutting
JPS645541A (en) Drilling tool for dental treatment
JPS59140116U (en) Twist drill with guide part
JPS56126510A (en) Twist drill for deep hole