Title:
INSERT-TYPE TOOL AND THREAD MILL
Document Type and Number:
WIPO Patent Application WO/2016/203519
Kind Code:
A1
Abstract:
According to the present invention, an insert part (3) of a thread mill (1A) is affixed to a tip part of a body (2A) by screws (8). The insert part (3) is configured by superimposing an insert (4) for finishing processing and an insert (5) for rough processing. At respective mating surfaces of the inserts (4, 5), convexities and concavities of the mating surface of the insert (4) are made to overlap concavities and convexities of the mating surface of the insert (5). Using, for example, a right-hand down cut, the thread mill (1A) can cut an internal screw in a hole that is formed in a workpiece. Because the inner circumferential surface of the hole is cut by the inserts (4, 5) simultaneously, rough processing and finishing processing can be performed in one pass. Because the respective convexities and concavities of the mating surfaces overlap, one section of each of the inserts (4, 5) overlaps the other in the thickness directions thereof. As a result, the length to which the insert part (3) protrudes can be shortened.
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Inventors:
OSAWA JIRO (JP)
YODA TOMONORI (JP)
YODA TOMONORI (JP)
Application Number:
PCT/JP2015/067161
Publication Date:
December 22, 2016
Filing Date:
June 15, 2015
Export Citation:
Assignee:
OSG CORP (JP)
International Classes:
B23C5/10; B23G5/18
Foreign References:
| DE102011055210A1 | 2013-05-16 | |||
| US5279344A | 1994-01-18 | |||
| JP2012179685A | 2012-09-20 | |||
| JPS4937887U | 1974-04-03 | |||
| JPH03270816A | 1991-12-03 | |||
| JPH0578464U | 1993-10-26 |
Other References:
See also references of EP 3308888A4
Attorney, Agent or Firm:
YAMAMOTO, Hisashi et al. (JP)
Yamamoto In addition (JP)
Yamamoto In addition (JP)
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