JPS5775714A - Drill - Google Patents

Drill

Info

Publication number
JPS5775714A
JPS5775714A JP55153639A JP15363980A JPS5775714A JP S5775714 A JPS5775714 A JP S5775714A JP 55153639 A JP55153639 A JP 55153639A JP 15363980 A JP15363980 A JP 15363980A JP S5775714 A JPS5775714 A JP S5775714A
Authority
JP
Japan
Prior art keywords
scrap
grooves
cutting edge
expelling
scraps
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
JP55153639A
Other languages
Japanese (ja)
Inventor
Toshiaki Hosoi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP55153639A priority Critical patent/JPS5775714A/en
Priority to DE3131794A priority patent/DE3131794C2/en
Priority to KR1019810003001A priority patent/KR840001089B1/en
Priority to AU74427/81A priority patent/AU542465B2/en
Priority to IT49149/81A priority patent/IT1171479B/en
Priority to GB8125768A priority patent/GB2083767B/en
Priority to FR8116144A priority patent/FR2489191B1/en
Priority to MX188944A priority patent/MX152969A/en
Priority to CA000384826A priority patent/CA1166485A/en
Priority to SE8105094A priority patent/SE451241B/en
Publication of JPS5775714A publication Critical patent/JPS5775714A/en
Priority to US06/579,289 priority patent/US4565473A/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
    • 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
    • B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges
    • 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
    • B23B2251/40—Flutes, i.e. chip conveying grooves
    • B23B2251/406—Flutes, i.e. chip conveying grooves of special form not otherwise provided for
    • 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)
  • Drilling Tools (AREA)

Abstract

PURPOSE:To improve bending and torsional rigidity of a drill and make expelling ability of scraps favorable in such a way that width ratio of scrap expelling grooves is more sharply reduced than even, and scraps can be divised and produced by means of forming stepped portions on the cutting edge. CONSTITUTION:Scrap pockets 5 are formed at the portions which face a cutting edge 8 and a scooping face, and scrap expelling grooves 4 are formed in the axial direction in the shank in continuation thereto. Width ratio of these grooves 3 is set within the range between 0.5 and 0.02. When boring is done using this drill, the cutting edge has steps between the cutting edge on the center side and that on the outer peripheral side by the stepped part 4, therefore different scraps are produced by means of respective cutting edges, so that scrap expelling ability is improved. In addition, since the grooves 3 are formed to be particularly narrower in the opening area around the outer periphery, torsional and bending rigidities of the shank can be notably improved.
JP55153639A 1980-08-29 1980-10-30 Drill Pending JPS5775714A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP55153639A JPS5775714A (en) 1980-10-30 1980-10-30 Drill
DE3131794A DE3131794C2 (en) 1980-08-29 1981-08-12 drill
KR1019810003001A KR840001089B1 (en) 1980-10-30 1981-08-18 Drill
AU74427/81A AU542465B2 (en) 1980-08-29 1981-08-21 Drill
IT49149/81A IT1171479B (en) 1980-08-29 1981-08-21 DRILL WITH STRAWS UNLOADING THROATS ON THE STEM
GB8125768A GB2083767B (en) 1980-08-29 1981-08-24 Fluted drill
FR8116144A FR2489191B1 (en) 1980-08-29 1981-08-24 IMPROVED DRILL, PARTICULARLY FOR DRILLING DEEP HOLES
MX188944A MX152969A (en) 1980-08-29 1981-08-28 IMPROVEMENTS TO A REINFORCED TORSIONAL RIGIDITY DRILL
CA000384826A CA1166485A (en) 1980-08-29 1981-08-28 Drill
SE8105094A SE451241B (en) 1980-08-29 1981-08-28 DRILL
US06/579,289 US4565473A (en) 1980-08-29 1984-02-14 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55153639A JPS5775714A (en) 1980-10-30 1980-10-30 Drill

Publications (1)

Publication Number Publication Date
JPS5775714A true JPS5775714A (en) 1982-05-12

Family

ID=15566908

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55153639A Pending JPS5775714A (en) 1980-08-29 1980-10-30 Drill

Country Status (2)

Country Link
JP (1) JPS5775714A (en)
KR (1) KR840001089B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007130737A (en) * 2005-11-14 2007-05-31 Honda Motor Co Ltd Reamer, drill and machining method
JP2008062369A (en) * 2006-09-11 2008-03-21 Tungaloy Corp Method of producing tip to be mounted on boring tool, method of producing boring tool, and boring tool
JP2010505635A (en) * 2006-10-13 2010-02-25 ケンナメタル インコーポレイテッド Modular drilling tool and manufacturing method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007130737A (en) * 2005-11-14 2007-05-31 Honda Motor Co Ltd Reamer, drill and machining method
JP4580325B2 (en) * 2005-11-14 2010-11-10 本田技研工業株式会社 Reamer, drill and processing method
JP2008062369A (en) * 2006-09-11 2008-03-21 Tungaloy Corp Method of producing tip to be mounted on boring tool, method of producing boring tool, and boring tool
JP2010505635A (en) * 2006-10-13 2010-02-25 ケンナメタル インコーポレイテッド Modular drilling tool and manufacturing method

Also Published As

Publication number Publication date
KR830005950A (en) 1983-09-14
KR840001089B1 (en) 1984-08-01

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