IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0451154
(1982-11-24)
|
우선권정보 |
JP-0051162 (1981-04-07) |
국제출원번호 |
PCT/JP82/00107
(1982-04-07)
|
§371/§102 date |
[Act 371]19821124
([Act 101]19821124)
|
국제공개번호 |
WO82/03350
(1982-10-14)
|
발명자
/ 주소 |
- Hiroyasu, Minoru
- Yamashita, Hideo
- Ohguro, Tamotsu
- Yamagishi, Shigeru
- Shino, Shigenari
|
출원인 / 주소 |
- Honda Giken Kogyo Kabushiki Kaisha
|
대리인 / 주소 |
Weiner, Irving M.Carrier, Joseph P.Cantarella, John J.
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
4 |
초록
▼
A holding device for a rotating body comprising a tubular member (1) which permits insertion therein of the rotating body, at least three support members (2) disposed along the inner periphery of the tubular member (1) so as to be movable in a substantially radial direction, and a locking arrangemen
A holding device for a rotating body comprising a tubular member (1) which permits insertion therein of the rotating body, at least three support members (2) disposed along the inner periphery of the tubular member (1) so as to be movable in a substantially radial direction, and a locking arrangement (3a, 3b, 4a, 4b, 10a, 10b) capable of independently holding each of the support members (2) in a desired position. With such device, bodies which are rotatable about an axis not coaxial with the driving shaft thereof can be held in place without having any substantial influence upon their rotational shafts. Besides, it is not necessary to pay close attention to the clearance between moving members in the manufacture and use of the device, and thus the holding device is high in versatility and low in cost.
대표청구항
▼
1. A holding device for a rotating tool, comprising: a tubular member adapted to surround said rotating tool; at least three support members for supporting said tool, said support members being carried on said tubular member and disposed along a circumferential portion of said tubular member; a
1. A holding device for a rotating tool, comprising: a tubular member adapted to surround said rotating tool; at least three support members for supporting said tool, said support members being carried on said tubular member and disposed along a circumferential portion of said tubular member; a hydraulic system adapted to move said support members substantially radially relative to said tubular member and to lock said support members on said tubular member; means for driving said tool to rotate while permitting the inclination of said tool so as to render the axis of rotation of said tool to be guided by a bore in a workpiece; and said hydraulic system being adapted to move said support members radially inwardly into a position at which said support members abut against said rotating tool which has the axis thereof preset at a predetermined posture, and to lock said support members on said tubular member at said position. 2. A holding device according to claim 1, wherein said hydraulic system includes a locking mechanism for each said support member, and a single oil pressure feed system for feeding oil pressure to all of said locking mechanisms. 3. A holding device according to claim 2, wherein said locking mechanisms are disposed in the wall of said tubular member and said oil pressure feed system is disposed outside said tubular member. 4. A holding device according to claim 3, wherein said support members are each provided with an embedded portion fitted in the wall of said tubular member so as to be movable in the radial direction of said tubular member, said embedded portion having a first pressure receiving surface and a second pressure receiving surface, said first and second pressure receiving surfaces being adapted to receive oil pressures to thereby urge each said support member inwardly and outwardly, respectively, in said radial direction. 5. A holding device according to claim 4, wherein said locking mechanisms are each provided with a first hydraulic circuit and a second hydraulic circuit, said first and second hydraulic circuits communicating with first and second oil chambers, respectively, said first and second oil chambers being partially defined by said first and second pressure receiving surfaces, respectively, and said oil pressure feed system is adapted to feed a first predetermined oil pressure and a second predetermined oil pressure higher than said first oil pressure to said first and second hydraulic circuits selectively while switching over from each other. 6. A holding device according to claim 5, wherein said locking mechanisms are each provided at an inlet of said first oil chamber with a check valve member which is urged toward a closing side at all times and also with a piston member for moving said check valve member toward an opening side. 7. A holding device according to claim 6, wherein said piston member has a third pressure receiving surface and a fourth pressure receiving surface, said third and fourth pressure receiving surfaces being adapted to receive oil pressures to thereby urge said piston member toward said opening side and said closing side, respectively, of said check valve member, said locking mechanisms are each provided with a third hydraulic circuit and a fourth hydraulic circuit, said third and fourth hydraulic circuits communicating with a third oil chamber and a fourth oil chamber, respectively, said third and fourth oil chambers being partially defined by said third and fourth pressure receiving surfaces, respectively, said fourth hydraulic circuit communicating with said first hydraulic circuit, and said oil pressure feed system being adapted to feed said first predetermined oil pressure and a third predetermined oil pressure higher than said second predetermined oil pressure to said third hydraulic circuit. 8. A holding device according to claim 7, wherein said oil pressure feed system has a first stage of connection in which said first, second and third predetermined oil pressures are fed to said first, second and third hydraulic circuits, respectively, and a second state of connection in which said first and second predetermined oil pressures are fed to said second and third hydraulic circuits and to said first hydraulic circuit, respectively, and is further provided with switching means for switching said oil pressure feed system into said second state of connection when said rotating tool is to be held in place and into said first state of connection when said rotating tool is to be released from its held state.
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