JPS55120912A - Working method for center hole - Google Patents
Working method for center holeInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1979
- 1979-03-07 JP JP2631779A patent/JPS55120912A/en active Pending
Cited By (2)
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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