JPS5239873A - Drill - Google Patents

Drill

Info

Publication number
JPS5239873A
JPS5239873A JP11510375A JP11510375A JPS5239873A JP S5239873 A JPS5239873 A JP S5239873A JP 11510375 A JP11510375 A JP 11510375A JP 11510375 A JP11510375 A JP 11510375A JP S5239873 A JPS5239873 A JP S5239873A
Authority
JP
Japan
Prior art keywords
drill
cutting
equal
blades
asynmetric
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
JP11510375A
Other languages
Japanese (ja)
Other versions
JPS5315233B2 (en
Inventor
Tomoji Okina
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.)
Nachi Fujikoshi Corp
Original Assignee
Nachi Fujikoshi Corp
Fujikoshi KK
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 Nachi Fujikoshi Corp, Fujikoshi KK filed Critical Nachi Fujikoshi Corp
Priority to JP11510375A priority Critical patent/JPS5239873A/en
Publication of JPS5239873A publication Critical patent/JPS5239873A/en
Publication of JPS5315233B2 publication Critical patent/JPS5315233B2/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
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges

Abstract

PURPOSE:To provide a drill characterized in that cutting moment of both blades are equal and a couple of force is produced at a center of the drill, and also a cutting amount is equal to a feeding value, even if a cutting area and shape of the right and left cutting blades are asynmetric.
JP11510375A 1975-09-23 1975-09-23 Drill Granted JPS5239873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11510375A JPS5239873A (en) 1975-09-23 1975-09-23 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11510375A JPS5239873A (en) 1975-09-23 1975-09-23 Drill

Publications (2)

Publication Number Publication Date
JPS5239873A true JPS5239873A (en) 1977-03-28
JPS5315233B2 JPS5315233B2 (en) 1978-05-23

Family

ID=14654286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11510375A Granted JPS5239873A (en) 1975-09-23 1975-09-23 Drill

Country Status (1)

Country Link
JP (1) JPS5239873A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61166712U (en) * 1985-04-05 1986-10-16
US5078554A (en) * 1989-01-24 1992-01-07 Masao Kubota Drill

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6035909A (en) * 1983-08-04 1985-02-23 近畿電気工事株式会社 Nonflat ground self-traveling general construction work vehicle and device therefor
JPH0537717Y2 (en) * 1986-10-17 1993-09-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61166712U (en) * 1985-04-05 1986-10-16
US5078554A (en) * 1989-01-24 1992-01-07 Masao Kubota Drill

Also Published As

Publication number Publication date
JPS5315233B2 (en) 1978-05-23

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