Title:
ROTARY CUTTING TOOL, ROTARY CUTTING UNIT AND ROTARY CUTTING METHOD
Document Type and Number:
Japanese Patent JP2020131312
Kind Code:
A
Abstract:
To enable a cutting process to be performed with higher accuracy, in a cutting process such as a process for boring or finishing an internal surface of a hole by inserting a rotary cutting tool, such as a drill, into a guide bush.SOLUTION: A rotary cutting tool according to an embodiment has: a body having no back tapers and having therein a channel for cutting oil; and a blade portion integrated with the body and having formed therein a first supply port for supplying the cutting oil toward a to-be-cut material. The body is provided with a second supply port for supplying the cutting oil to an empty space defined between the body and a positioning bush used by inserting the body therein.SELECTED DRAWING: Figure 1
Inventors:
ONO RYOHEI
WATANABE MASAO
NAKAHATA TATSUO
WATANABE MASAO
NAKAHATA TATSUO
Application Number:
JP2019024424A
Publication Date:
August 31, 2020
Filing Date:
February 14, 2019
Export Citation:
Assignee:
SUBARU CORP
International Classes:
B23B51/06; B23B35/00; B23B47/00; B23B49/02; B23B51/00; B23Q11/10
Domestic Patent References:
| JPH0512023U | 1993-02-19 | |||
| JP2004130412A | 2004-04-30 | |||
| JPS4734528U | 1972-12-18 | |||
| JP2009184056A | 2009-08-20 | |||
| JP2009255229A | 2009-11-05 | |||
| JPS57184378U | 1982-11-22 |
Foreign References:
| EP3434402A1 | 2019-01-30 | |||
| CN205551566U | 2016-09-07 | |||
| US3767315A | 1973-10-23 |
Attorney, Agent or Firm:
Takehiko Yamada