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1. WO2014129119 - DIAMETER-EXPANDING DRILL BIT

Publication Number WO/2014/129119
Publication Date 28.08.2014
International Application No. PCT/JP2014/000450
International Filing Date 29.01.2014
IPC
B28D 1/14 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
DWORKING STONE OR STONE-LIKE MATERIALS
1Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhere; Machines, devices, tools therefor
14by boring or drilling
E21B 10/32 2006.1
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
10Drill bits
26Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
32with expansible cutting tools
CPC
B24B 33/02
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
33Honing machines or devices; Accessories therefor
02designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
B24B 5/40
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
5Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
36Single-purpose machines or devices
40for grinding tubes internally
B24B 5/48
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
5Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
36Single-purpose machines or devices
48for grinding walls of very fine holes, e.g. in drawing-dies
B28D 1/14
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
DWORKING STONE OR STONE-LIKE MATERIALS
1Working stone or stone-like materials, e.g. brick, concrete ; or glass; , not provided for elsewhere; Machines, devices, tools therefor
14by boring or drilling
B28D 1/146
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
DWORKING STONE OR STONE-LIKE MATERIALS
1Working stone or stone-like materials, e.g. brick, concrete ; or glass; , not provided for elsewhere; Machines, devices, tools therefor
14by boring or drilling
146Tools therefor
B28D 1/22
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
DWORKING STONE OR STONE-LIKE MATERIALS
1Working stone or stone-like materials, e.g. brick, concrete ; or glass; , not provided for elsewhere; Machines, devices, tools therefor
22by cutting, e.g. incising
Applicants
  • FSテクニカル株式会社 FS TECHNICAL CORPORATION [JP]/[JP]
Inventors
  • 藤田 正吾 FUJITA, Shogo
Agents
  • 特許業務法人真菱国際特許事務所 SHINRYO INTERNATIONAL PATENT FIRM
Priority Data
2013-02988219.02.2013JP
2013-10399216.05.2013JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) DIAMETER-EXPANDING DRILL BIT
(FR) TRÉPAN À DIAMÈTRE EXTENSIBLE
(JA) 拡径用ドリルビット
Abstract
(EN) Provided is a diameter-expanding drill bit with a simple structure and capable of handling even small diameter pilot holes. A diameter-expanding drill bit (10) used by inserting into a pilot hole (H) bored in a building frame (A) to expand the diameter of a portion of the pilot hole (H) by grinding. The drill bit is provided with: multiple cutting edges (21) for grinding a portion of the pilot hole (H); a cutting edge-holding section (22) for holding the multiple cutting edges (21) so that each is movable in the diameter direction; and a shank section (23) for supporting the cutting edge-holding section (22). The multiple cutting edges (21) move so as to expand radially outward with respect to the cutting edge-holding section (22) as a result of the centrifugal force associated with rotation.
(FR) L'invention porte sur un trépan à diamètre extensible ayant une structure simple et apte à traiter même des avant-trous de petit diamètre. L'invention concerne un trépan à diamètre extensible (10) utilisé par insertion dans un avant-trou (H) percé dans un bâti de construction (A) pour agrandir le diamètre d'une partie de l'avant-trou (H) par abrasion. Le trépan comporte : de multiples arêtes tranchantes (21) pour l'abrasion d'une partie de l'avant-trou (H) ; une section de support d'arête tranchante (22) destinée à porter les multiples arêtes tranchantes (21) de telle sorte que chacune peut se déplacer dans la direction diamétrale ; et une section de queue (23) destinée à porter la section de support d'arête tranchante (22). Les multiples arêtes tranchantes (21) se déplacent de façon à s'étendre radialement vers l'extérieur par rapport à la section de support d'arête tranchante (22) sous l'effet de la force centrifuge associée à la rotation.
(JA) 単純な構造で、細径の下穴にも対応可能な拡径用ドリルビットを提供する。躯体(A)に穿孔した下穴(H)に挿入して用いられ、下穴(H)の一部を研削により拡径するための拡径用ドリルビット(10)であって、下穴(H)の一部を研削する複数の切刃部(21)と、複数の切刃部(21)を、それぞれ径方向に移動可能に保持する切刃保持部(22)と、切刃保持部(22)を支持するシャンク部(23)と、を備え、複数の切刃部(21)は、回転に伴う遠心力により、切刃保持部(22)に対し径方向外側に拡開するように移動する。
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