JPS55120912A - Working method for center hole - Google Patents

Working method for center hole

Info

Publication number
JPS55120912A
JPS55120912A JP2631779A JP2631779A JPS55120912A JP S55120912 A JPS55120912 A JP S55120912A JP 2631779 A JP2631779 A JP 2631779A JP 2631779 A JP2631779 A JP 2631779A JP S55120912 A JPS55120912 A JP S55120912A
Authority
JP
Japan
Prior art keywords
worked
center hole
rollers
center
revolution
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
JP2631779A
Other languages
Japanese (ja)
Inventor
Kozo Nosaka
Akihiko Yamazaki
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 Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP2631779A priority Critical patent/JPS55120912A/en
Publication of JPS55120912A publication Critical patent/JPS55120912A/en
Pending legal-status Critical Current

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  • Drilling And Boring (AREA)

Abstract

PURPOSE: To form a center hole with high accuracy by boring the center hole for cutting working to a shaft end of a material to be worked, by hardening the surface of the material, and by correcting the center hole by the revolution of a cutting tool in a cemented carbide alloy at high speed and the revolution of the material to be worked.
CONSTITUTION: Support bases 5, 5' are moved to the journal positions of a material to be worked 1, to one side or both sides of shaft ends thereof center holes are bored and whose surface is hardened, by material to be worked 1, and fixed by a head 11. Rollers 8 are moved and adjusted so that cutters 28 be located at the axial cores of the center holes, and material to be worked 1 is held by keep rollers 9. Material to be worked 1 is rotated by driving rollers 8 of supporting bases, while rotating cutters 28 advance, and the center holes are correction-worked.
COPYRIGHT: (C)1980,JPO&Japio
JP2631779A 1979-03-07 1979-03-07 Working method for center hole Pending JPS55120912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2631779A JPS55120912A (en) 1979-03-07 1979-03-07 Working method for center hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2631779A JPS55120912A (en) 1979-03-07 1979-03-07 Working method for center hole

Publications (1)

Publication Number Publication Date
JPS55120912A true JPS55120912A (en) 1980-09-17

Family

ID=12190003

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2631779A Pending JPS55120912A (en) 1979-03-07 1979-03-07 Working method for center hole

Country Status (1)

Country Link
JP (1) JPS55120912A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102725087A (en) * 2010-01-28 2012-10-10 小松Ntc株式会社 Center hole machining method for shaft blank and center hole machining apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102725087A (en) * 2010-01-28 2012-10-10 小松Ntc株式会社 Center hole machining method for shaft blank and center hole machining apparatus
CN102725087B (en) * 2010-01-28 2014-09-03 小松Ntc株式会社 Center hole machining method for shaft blank and center hole machining apparatus

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