Patent US4575972A successfully refreshed from Google Patents.
US4575972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding machine for use with rolling mill
Assignee: JFE Steel Corp
•
Filing: 1984-02-06
•
Granted: 1986-03-18
•
Expires: 2004-02-06
Abstract
Abstract Disclosed is a grinding machine for use with a rolling mill capable of carrying out the continuous grinding operation of the cylindrical or rolling surface of a work roll without removing the work roll from the rolling mill while the continuous rolling operation is being carried out, whereby labor saving can be attained and the downtime of the rolling mill can be remarkably reduced.
Inventors
- 👤 Toshio Ohki
- 👤 Masaomi Matsumoto
- 👤 Takashi Sakuraya
- 👤 Keinosuke Tokushige
- 👤 Shuji Hoshino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:08
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/36; B24B5/363; B21; B21B; B21B28/00; B21B28/02; B21B28/04; B24B21/00; B24B21/004; B24B21/02; B24B21/04; B24B21/06; B24B21/08
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
101 words
A grinding machine for use with a rolling mill having a work roll with a longitudinal axis, comprising: a main body, means for displacing said main body essentially parallel to said axis, a supporting rod slidably mounted in said main body so as to be movable transverse to said axis and having a leading end, an abrasive belt mounted on said main body and supported by said leading end of said supporting rod, and means for extending or retracting said supporting rod relative to said main body, for pressing said abrasive belt against a circumferential rolling surface of said work roll.
Claim 2
Dependent Claim
101 words
A grinding machine for use with a rolling mill having a work roll with a longitudinal axis, comprising: a main body, means for displacing said main body essentially parallel to said axis, a supporting rod slidably mounted in said main body so as to be movable transverse to said axis and having a leading end, an abrasive belt mounted on said main body and supported by said leading end of said supporting rod, and means for extending or retracting said supporting rod relative to said main body, for pressing said abrasive belt against a circumferential rolling surface of said work roll.
Claim 3
Dependent Claim
18 words
A grinding machine according to claim 1, comprising hydraulic cylinder means for extending or retracting said supporting rod.
Claim 4
Dependent Claim
104 words
A grinding machine for use with a rolling mill having a work roll with a longitudinal axis, comprising: a main body, means for displacing said main body essentially parallel to said axis, a supporting rod slidably mounted in said main body transverse to said axis and having a leading end, a pressing member attached to said leading end of said supporting rod, an abrasive belt mounted on said main body and supported by said pressing member, and means for extending or retracting said supporting rod and thereby said pressing member for pressing said abrasive belt against a circumferential rolling surface of said work roll.
Claim 5
Dependent Claim
104 words
A grinding machine for use with a rolling mill having a work roll with a longitudinal axis, comprising: a main body, means for displacing said main body essentially parallel to said axis, a supporting rod slidably mounted in said main body transverse to said axis and having a leading end, a pressing member attached to said leading end of said supporting rod, an abrasive belt mounted on said main body and supported by said pressing member, and means for extending or retracting said supporting rod and thereby said pressing member for pressing said abrasive belt against a circumferential rolling surface of said work roll.
Claim 6
Dependent Claim
21 words
A grinding machine according to claim 3, wherein said pressing member is extendable or retractable with respect to said supporting rod.
Claim 7
Dependent Claim
18 words
A grinding machine according to claim 3, wherein said pressing member is pivotally mounted to said supporting rod.
Claim 8
Dependent Claim
31 words
A grinding machine according to claim 3, comprising spring means between said pressing member and said leading end of said supporting rod for urging said pressing member toward said work roll.
Claim 9
Dependent Claim
18 words
A grinding machine according to claim 3, wherein the leading end of said pressing member comprises roller means.
Claim 10
Dependent Claim
32 words
A grinding machine according to claim 3, wherein a load cell is interposed between said pressing member and said supporting rod so as to detect the force applied to said work roll.
Claim 11
Dependent Claim
57 words
A grinding machine according to claim 3, wherein belt holding rollers are rotatably disposed in symmetrical relationship with respect to said pressing member, said abrasive belt passing over said belt holding rollers so that the portion of said abrasive belt between said belt holding rollers is maintained nearly flat in the tangential direction of said work roll.
Claim 12
Dependent Claim
27 words
A grinding machine according to claim 5, comprising spring means between said pressing member and said leading end of said supporting rod for centering said pressing member.
Claim 13
Dependent Claim
23 words
A grinding machine according to claim 3, comprising hydraulic cylinder means for extending or retracting said supporting rod and including piston rod means.
Claim 14
Dependent Claim
22 words
A grinding machine according to claim 11, comprising means for locking said piston rod means of said hydraulic cylinder means in position.
Claim 15
Dependent Claim
21 words
A grinding machine according to claim 12, comprising means for maintaining pressure in said hydraulic cylinder means at a predetermined level.
Claim 16
Dependent Claim
22 words
A grinding machine according to claim 3, wherein said means for displacing said main body is a chain attached to said body.
Claim 17
Dependent Claim
22 words
A grinding machine according to claim 3, wherein the width of said abrasive belt is smaller than that of said work roll.
Claim 18
Dependent Claim
57 words
A grinding machine according to claim 3, wherein ends of said abrasive belt are wound around two reels which in turn are mounted on said main body, whereby said abrasive belt is unwound from one of said reels and taken up by the other reel and consequently said abrasive belt is moved relative to said work roll.
Claim 19
Dependent Claim
27 words
A grinding machine according to claim 16, wherein said abrasive belt is wound around said reels such that the grinding surface of said abrasive belt faces inwardly.
References Cited (Backward Citations)
US2579391A
Cited
US2710500A
Cited
US3524285A
Cited
US3496679A
Cited
DE2365924A1
Cited
JPS54145356A
Cited
US4488382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-17 | 1989-09-16 | 1990-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-17 | 1993-09-16 | 1994-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-17 | 1997-09-16 | 1998-03-18 | $7700.00 | Window Closed / Lapsed |