IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0269616
(1999-03-26)
|
국제출원번호 |
PCT/JP97/04166
(1997-11-14)
|
§371/§102 date |
19990326
(19990326)
|
국제공개번호 |
WO-9928082
(1999-10-06)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
4 |
초록
▼
A drill abrasive apparatus, capable of grinding a candle-shaped drill requiring Z-type thinning, has a whetstone (1), a drill holder (5), a drill adjustable pedestal (2), a drill abrasive pedestal (3) and a drill thinning pedestal (4). An abrasive surface of the whetstone has a parallel surface (11)
A drill abrasive apparatus, capable of grinding a candle-shaped drill requiring Z-type thinning, has a whetstone (1), a drill holder (5), a drill adjustable pedestal (2), a drill abrasive pedestal (3) and a drill thinning pedestal (4). An abrasive surface of the whetstone has a parallel surface (11) parallel with a rotating axis of the whetstone, a relief surface (12) for a chisel portion central to of the drill in front of the parallel surface, a slanted surface (13) for a thinning behind the parallel surface for a predetermined angle, and a second parallel surface (14) behind the slanted surface parallel with the rotating axis of the whetstone. The drill holder a cylindrical drill insertion portion (51), holder ring (52) with guide groove (52e) regulating a rotating angle of the drill holder mounted to the drill insertion portion for a cutting edge-shape. The drill adjustable pedestal has a fitting hole (21a) into which the drill insertion portion is fitted, an adjustable base pedestal (21) having a latch projection for determining an angle and position of the drill holder, and a stopper (22) integral with the adjustable base pedestal. The drill abrasive pedestal has a fitting hole (31) into which the drill insertion portion is fitted and a latch projection (31a), inserted into the guide groove with play existing therebetween, is provided on the peripheral edge portion. The drill thinning pedestal has a fixing leg (41) fixed to a base (8) and a fitting portion (42) mounted to the fixing leg and has a fitting hole (42a) into which the drill insertion portion is fitted, and the fitting portion has a latch projection for determining the angle and position of the drill holder and can be slanted towards the whetstone within a predetermined angle range.
대표청구항
▼
[ What is claimed is:] [1.] A drill abrasive apparatus which is capable of grinding a candle-shaped drill requiring Z-type thinning, characterized by comprising a whetstone (1), a drill holder (5), a drill adjustable pedestal (2), a drill abrasive pedestal (3) and a drill thinning pedestal (4), wher
[ What is claimed is:] [1.] A drill abrasive apparatus which is capable of grinding a candle-shaped drill requiring Z-type thinning, characterized by comprising a whetstone (1), a drill holder (5), a drill adjustable pedestal (2), a drill abrasive pedestal (3) and a drill thinning pedestal (4), wherein an abrasive surface of said whetstone is composed of a parallel surface (11) formed parallel with a rotating axis of said whetstone, a relief surface (12) for a chisel portion at a central portion of the drill formed in front of said parallel surface, a slanted surface (13) for a thinning process formed behind said parallel surface so as to have a predetermined angle, and a second parallel surface (14) formed behind said slanted surface so as to be parallel with the rotating axis of said whetstone, said drill holder is composed of a cylindrical drill insertion portion (51), and a holder ring (52) which has a guide groove (52e) for regulating a rotating angle of said drill holder and is mounted to one end of the drill insertion portion so as to have a cutting edge-shape, said drill adjustable pedestal is composed of a fitting hole (21a) into which the drill insertion portion can be fitted, an adjustable base pedestal (21) having a latch projection for determining an angle and position of said drill holder, and a stopper (22) which is mounted on a forward side of the fitting hole so as to be integral with the adjustable base pedestal, said drill abrasive pedestal is composed of a fitting hole (31) into which the drill insertion portion can be fitted and when the drill insertion portion is inserted into the fitting hole until the holder ring of said drill holder comes in contact with a peripheral edge portion of the fitting hole, the cutting edge of the drill comes in contact with the abrasive surface of said whetstone and a latch projection (31a), which is inserted into the guide groove with a play existing therebetween, is provided on the peripheral edge portion, said drill thinning pedestal is composed of a fixing leg (41) fixed to a base (8) and a fitting portion (42) which is mounted to the fixing leg and has a fitting hole (42a) into which the drill insertion portion can be fitted, said fitting portion has a latch projection for determining the angle and position of said drill holder and can be slanted towards said whetstone within a predetermined angle range.
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