JPS5748411A - Drill - Google Patents

Drill

Info

Publication number
JPS5748411A
JPS5748411A JP55120463A JP12046380A JPS5748411A JP S5748411 A JPS5748411 A JP S5748411A JP 55120463 A JP55120463 A JP 55120463A JP 12046380 A JP12046380 A JP 12046380A JP S5748411 A JPS5748411 A JP S5748411A
Authority
JP
Japan
Prior art keywords
chips
groove
drill
shall
width ratio
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
JP55120463A
Other languages
Japanese (ja)
Other versions
JPS6336882B2 (en
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 JP55120463A priority Critical patent/JPS5748411A/en
Priority to DE3131794A priority patent/DE3131794C2/en
Priority to KR1019810002968A priority patent/KR840001088B1/en
Priority to IT49149/81A priority patent/IT1171479B/en
Priority to AU74427/81A priority patent/AU542465B2/en
Priority to GB8125768A priority patent/GB2083767B/en
Priority to FR8116144A priority patent/FR2489191B1/en
Priority to SE8105094A priority patent/SE451241B/en
Priority to MX188944A priority patent/MX152969A/en
Priority to CA000384826A priority patent/CA1166485A/en
Publication of JPS5748411A publication Critical patent/JPS5748411A/en
Priority to US06/579,289 priority patent/US4565473A/en
Publication of JPS6336882B2 publication Critical patent/JPS6336882B2/ja
Granted 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 convenience of discharging machined chips, duly followed by easier process of drilling a deep hole as well as to enhance rigidity of the related drill, by assigning a specific value to the width ratio of a groove provided for discharging the metal chips generated in machining process with a drill. CONSTITUTION:The ratio alpha/theta is defined as width ratio of a groove, thereby alpha is an angle between two radial lines starting from the center ''0'' of the drill shank toward the opening edges of drilling chips discharge groove 3 and theta is an angle corresponding to the surface free of such a groove. This width ratio of the groove shall be set in the range 0.5-0.02 and rigidity of the drill both for bending and torsion shall be enhanced. At the same time, there shall be some contrivance to reform those machining chips having curling tendency into a band-shaped linear chips to be easily broken provided that both sorts of chips are forced to pass through the chips discharge groove, where one sort of chips can be formed with a small curl while being generated by the cutter edge arranged closer toward the center than the concave 4 and the other sort of chips can be formed in a band shape with the width identical to that of the cutter edge arranged along the periphery toward circumference from the concave 4. Thus, these machined chips can be very smoothly discharged.
JP55120463A 1980-08-29 1980-08-29 Drill Granted JPS5748411A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP55120463A JPS5748411A (en) 1980-08-29 1980-08-29 Drill
DE3131794A DE3131794C2 (en) 1980-08-29 1981-08-12 drill
KR1019810002968A KR840001088B1 (en) 1980-08-29 1981-08-17 Drill
IT49149/81A IT1171479B (en) 1980-08-29 1981-08-21 DRILL WITH STRAWS UNLOADING THROATS ON THE STEM
AU74427/81A AU542465B2 (en) 1980-08-29 1981-08-21 Drill
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
SE8105094A SE451241B (en) 1980-08-29 1981-08-28 DRILL
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
US06/579,289 US4565473A (en) 1980-08-29 1984-02-14 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55120463A JPS5748411A (en) 1980-08-29 1980-08-29 Drill

Publications (2)

Publication Number Publication Date
JPS5748411A true JPS5748411A (en) 1982-03-19
JPS6336882B2 JPS6336882B2 (en) 1988-07-22

Family

ID=14786782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55120463A Granted JPS5748411A (en) 1980-08-29 1980-08-29 Drill

Country Status (2)

Country Link
JP (1) JPS5748411A (en)
KR (1) KR840001088B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5688083A (en) * 1993-05-20 1997-11-18 Iscar Ltd. Drilling tool and an indexing cutting insert for use therein
CN110877115A (en) * 2019-12-11 2020-03-13 株洲钻石切削刀具股份有限公司 Drilling tool
JP2020519464A (en) * 2017-05-11 2020-07-02 サンドビック インテレクチュアル プロパティー アクティエボラーグ Drill body and drill

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5688083A (en) * 1993-05-20 1997-11-18 Iscar Ltd. Drilling tool and an indexing cutting insert for use therein
JP2020519464A (en) * 2017-05-11 2020-07-02 サンドビック インテレクチュアル プロパティー アクティエボラーグ Drill body and drill
CN110877115A (en) * 2019-12-11 2020-03-13 株洲钻石切削刀具股份有限公司 Drilling tool

Also Published As

Publication number Publication date
KR840001088B1 (en) 1984-08-01
KR830005949A (en) 1983-09-14
JPS6336882B2 (en) 1988-07-22

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