JPS54157390A - Method and device for drilling holes whose openings are not circular - Google Patents

Method and device for drilling holes whose openings are not circular

Info

Publication number
JPS54157390A
JPS54157390A JP6565278A JP6565278A JPS54157390A JP S54157390 A JPS54157390 A JP S54157390A JP 6565278 A JP6565278 A JP 6565278A JP 6565278 A JP6565278 A JP 6565278A JP S54157390 A JPS54157390 A JP S54157390A
Authority
JP
Japan
Prior art keywords
cutter
circular
holes whose
whose openings
drilling holes
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
JP6565278A
Other languages
Japanese (ja)
Inventor
Yoshiki Nishitani
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki 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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP6565278A priority Critical patent/JPS54157390A/en
Publication of JPS54157390A publication Critical patent/JPS54157390A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To drill highly accurate holes whose openings are not circular by moving a conical cutter up and down or swinging it right to left and so forth while the cutter rotates.
CONSTITUTION: A cutter 1 which has conical cutting edge 1a rotates and moves up and down, and right and left to drill a wole shose opening is not circular on a work 2 such as a steel sheet. If the cutter 1 moves along a V-shaped locus 4, then a hole 3 having a semi-rhombic contour is drilled; while the cutter 1 moves along a half circle trajectory, a hole having an oval shaped contour is drilled in the work 2.
COPYRIGHT: (C)1979,JPO&Japio
JP6565278A 1978-06-02 1978-06-02 Method and device for drilling holes whose openings are not circular Pending JPS54157390A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6565278A JPS54157390A (en) 1978-06-02 1978-06-02 Method and device for drilling holes whose openings are not circular

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6565278A JPS54157390A (en) 1978-06-02 1978-06-02 Method and device for drilling holes whose openings are not circular

Publications (1)

Publication Number Publication Date
JPS54157390A true JPS54157390A (en) 1979-12-12

Family

ID=13293142

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6565278A Pending JPS54157390A (en) 1978-06-02 1978-06-02 Method and device for drilling holes whose openings are not circular

Country Status (1)

Country Link
JP (1) JPS54157390A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4443920A (en) * 1981-09-08 1984-04-24 Oliver John P Method of manufacturing a gate valve body
JPH01222810A (en) * 1988-01-27 1989-09-06 Iseki Tory Tech Inc Method and device for machining pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4443920A (en) * 1981-09-08 1984-04-24 Oliver John P Method of manufacturing a gate valve body
JPH01222810A (en) * 1988-01-27 1989-09-06 Iseki Tory Tech Inc Method and device for machining pipe

Similar Documents

Publication Publication Date Title
ES245915Y (en) A TOOL FOR QUICKLY ROTATING DRILLING.
BE877150A (en) FRAGMENTATION MACHINE WITH AT LEAST ONE ROTATING FRAGMENTATION TOOL
JPS5214287A (en) Holsaw
JPS54157390A (en) Method and device for drilling holes whose openings are not circular
ES2015292B3 (en) DRILL TOOL.
JPS52131293A (en) Reamer
EP0110727A3 (en) Machine for drawing or cutting ellipse
JPS5410481A (en) Portable revetting tool
JPS51133808A (en) Method of producing mult iblade fan
JPS5274972A (en) Device for stopping cutting tool at predetermined position in boring machine
JPS53129391A (en) Cutting method and cutting machine
JPS5411586A (en) Vibration type turning apparatus
JPS5468589A (en) Numerical control device to control the machining of cams
JPS5432885A (en) Method of observing wear of tool in automatic machine tools
JPS5399575A (en) Apparatus for controlling cutting
SU914048A1 (en) Device for reposition of bone fractures
JPS5410482A (en) Method of and material for cutting hole for cast
JPS545279A (en) Highly reliable cutting tool
JPS5411000A (en) Processing of ceramics
FR2424785A1 (en) Swarf clearing device for tapping head - has conical member freely mounted on tap shank to be rotated by air jet directed at turbine blades
JPS53134289A (en) Control means for crankshaft miller
JPS5232195A (en) Profiling cutting machine
JPS53110189A (en) Center hole cutter
FR2427160A1 (en) Simultaneous drilling and countersinking tool - has detachable facing cutter mounted on drill bit shank by radial screws
JPS5380886A (en) Apparatus working multiple circular groove on inner surface