US4086704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination tool mount and centering device
Assignee: Sato Seimitsu Kanagata Seisakusho YK
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Filing: 1977-01-28
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Granted: 1978-05-02
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Expires: 1997-01-28
Abstract
Abstract A machine tool mount which can concurrently serve for centering or positioning the spindle of a machine tool. Within a socket holding a shaft to be fitted to the spindle is an externally rotatable eccentric shaft, a movable piece contacting said eccentric shaft, a pressing piece contacting a spherical surface of said movable piece and a sphere contacting said pressing piece. The front of said sphere is held in the socket by means of a semispherical cover having a central hole through which projects a centering needle. The centering needle is removably attached to the front of the sphere.
Inventors
- 👤 Sato Masaichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:13
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/24; G01B5/25; B; B23; B23Q; B23Q17/00; B23Q17/22; B23Q17/2233; B23Q17/225; B23Q17/2258; B25; B25H; B25H7/00; B25H7/04; B25H7/045
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
253 words
A combination tool mount and centering device, comprising: a socket having a mounting shaft extending from the closed end thereof for mounting in the spindle of a machine tool; an eccentric shaft rotatably mounted in the inner end of said socket for rotation around an axis transverse to the axis of said socket, said eccentric shaft being rotatable from outside of said socket; a movable piece in said socket engaged with said eccentric shaft and movable in the direction of the axis of said socket by the rotation of said shaft; a sphere in said socket and having the spherical surface thereof engaged by said pressing piece; a semispherical cover over the open end of said socket against which the spherical surface of said sphere is engaged for holding said sphere in said socket; a centering needle removably mounted on said sphere, said semispherical cover having an aperture therein through which said centering needle projects; and a pressing piece mounted in said socket between said movable piece and said sphere for movement in the direction of the axis of said socket; one of said pieces having a spherical surface thereon projecting toward the other piece and engaging said other piece when said eccentric shaft is in a position toward said sphere for pressing said sphere into frictional locking engagement with said cover; and a resilient means between said movable piece and said pressing piece and urging them away from each other when said eccentric shaft is in a position away from said sphere.
Claim 2
Dependent Claim
253 words
A combination tool mount and centering device, comprising: a socket having a mounting shaft extending from the closed end thereof for mounting in the spindle of a machine tool; an eccentric shaft rotatably mounted in the inner end of said socket for rotation around an axis transverse to the axis of said socket, said eccentric shaft being rotatable from outside of said socket; a movable piece in said socket engaged with said eccentric shaft and movable in the direction of the axis of said socket by the rotation of said shaft; a sphere in said socket and having the spherical surface thereof engaged by said pressing piece; a semispherical cover over the open end of said socket against which the spherical surface of said sphere is engaged for holding said sphere in said socket; a centering needle removably mounted on said sphere, said semispherical cover having an aperture therein through which said centering needle projects; and a pressing piece mounted in said socket between said movable piece and said sphere for movement in the direction of the axis of said socket; one of said pieces having a spherical surface thereon projecting toward the other piece and engaging said other piece when said eccentric shaft is in a position toward said sphere for pressing said sphere into frictional locking engagement with said cover; and a resilient means between said movable piece and said pressing piece and urging them away from each other when said eccentric shaft is in a position away from said sphere.
Claim 3
Dependent Claim
23 words
The device of claim 1 in which said movable piece has a U-shaped groove in which said eccentric shaft contacts said movable piece.
Claim 4
Dependent Claim
20 words
The device of claim 1 in which said spherical surface is on said movable piece and contacts said pressing piece.
Claim 5
Dependent Claim
34 words
The device of claim 1 in which said pressing piece has a circular recess in the end thereof toward said sphere and the edge of said recess contacts the spherical surface of said sphere.
Claim 6
Dependent Claim
14 words
The device of claim 1 in which said resilient means is a coil spring.
Claim 7
Dependent Claim
16 words
The device of claim 1 in which said centering needle is threadedly mounted on said sphere.
Claim 8
Dependent Claim
41 words
The device of claim 1 in which said sphere has a projection thereon into which said centering needle is mounted, said projection having a shape for engagement by a wrench for holding the sphere while the centering needle is removed therefrom.
Claim 9
Dependent Claim
45 words
The device of claim 1 in which said centering needle has a stop thereon for limiting the distance which said centering needle can extend into said sphere, said stop having a shape for engagement by a wrench for removing the centering needle from said sphere.
Claim 10
Dependent Claim
36 words
The device of claim 1 in which said aperture in said spherical cover is larger than the outside dimension of said centering needle, whereby said centering needle can oscillate slightly around the axis of said socket.
Claim 11
Dependent Claim
39 words
The device of claim 1 in which the end of said eccentric shaft has a polygonal recess therein exposed to the exterior of said socket for engagement by a polygonal head of a wrench for turning said eccentric shaft.
Claim 12
Dependent Claim
47 words
The device of claim 1 in which the central axis of said socket, the center of said movable piece, the cental axis of the pressing piece, the center of the sphere and the cental axis of the centering needle lie on the axis of said mounting shaft.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |