CA2429264A1 - Rolling mill roll assembly - Google Patents
Rolling mill roll assembly Download PDFInfo
- Publication number
- CA2429264A1 CA2429264A1 CA002429264A CA2429264A CA2429264A1 CA 2429264 A1 CA2429264 A1 CA 2429264A1 CA 002429264 A CA002429264 A CA 002429264A CA 2429264 A CA2429264 A CA 2429264A CA 2429264 A1 CA2429264 A1 CA 2429264A1
- Authority
- CA
- Canada
- Prior art keywords
- roll
- shaft
- load ring
- tapered
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/03—Sleeved rolls
- B21B27/035—Rolls for bars, rods, rounds, tubes, wire or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/005—Cantilevered roll stands
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Mounting Of Bearings Or Others (AREA)
- Rolling Contact Bearings (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
A rolling mill roll assembly comprises a support shaft having a tapered section leading from an abutment to an end section. A ring-shaped roll with inboard and outboard flanks and a cylindrical bore is axially mounted on the shaft with its inboard flank seated against the shaft abutment and with its cylindrical bore surrounding the tapered shaft section.
A tapered sleeve is inserted between the tapered section of the shaft and the cylindrical bore of the roll, and a load ring is rotatably fixed with respect to and axially shiftable on the end section of the shaft.
A resilient spacer is interposed between the load ring and the sleeve to yieldably maintain a gap between the load ring and the outboard flank of the roll. A roll retainer mounted on the end section of the shaft acts in an abutting relationship with the load ring and via the resilient spacer to close the gap and axially wedge the tapered portion of the sleeve between the tapered section of the shaft and the cylindrical bore of the roll. Bolt members threaded in through bores in the roll retainer are torqued to urge the load ring against the outboard flank of the roll, which in turn urges the outboard flank of the roll against the shaft abutment.
A tapered sleeve is inserted between the tapered section of the shaft and the cylindrical bore of the roll, and a load ring is rotatably fixed with respect to and axially shiftable on the end section of the shaft.
A resilient spacer is interposed between the load ring and the sleeve to yieldably maintain a gap between the load ring and the outboard flank of the roll. A roll retainer mounted on the end section of the shaft acts in an abutting relationship with the load ring and via the resilient spacer to close the gap and axially wedge the tapered portion of the sleeve between the tapered section of the shaft and the cylindrical bore of the roll. Bolt members threaded in through bores in the roll retainer are torqued to urge the load ring against the outboard flank of the roll, which in turn urges the outboard flank of the roll against the shaft abutment.
Description
ROLLING MILL ROLL ASSEMBLY
BACKGROUND OF THE INVENTION
1, Field of the Invention This invention relates generally to rolling mills, and is concerned in particular with an improved roll assembly of the so called "overhung" type, in which ring-shaped roll discs with cylindrical bores are' centered on tapered shaft sections by nr~eans of tapered sleeves tightly wedged therebetween.
BACKGROUND OF THE INVENTION
1, Field of the Invention This invention relates generally to rolling mills, and is concerned in particular with an improved roll assembly of the so called "overhung" type, in which ring-shaped roll discs with cylindrical bores are' centered on tapered shaft sections by nr~eans of tapered sleeves tightly wedged therebetween.
2. Description of the Prior Art ' , In a known roll assembly of the above-mentioned type, as described in U.S.
Patent No.
5,934,131 (Shen), the tapered sleeve is urged into its operative wedged position by a rigid circular retainer. The retainer is rotatably fixed to the shaft, and is advanced against the sleeve by torquing a nut threaded onto the end of the shaft. Screws carried by the retainer are then tightened against an outboard flank of the roll to urge an inboard flank of the roll against a shaft shoulder. When thus tightened, the screws provide the primary means of transmitting torque from the roll shaft to the roll.
There are several drawbacks to this arrangement. First, the tapered sleeve may not be fully wedged into its operative position prior to tightening of the retainer screws against the outboard roll flank. Thus, the roll will not be properly centered on the roll shaft. Secondly, the outboard roll flank can be damaged by the torque transmitting retainer screws.
The objective of the present invention is to provide an improved roll assembly which overcomes these drawbacks.
A roll assembly in accordance with the present invention includes a support shaft with a tapered section leading from an abutment to an end section, and a ring shaped roll with inboard and outboard flanks and a cylindrical bore. The roll is axially mounted on the shaft with its inboard flank seated against the shaft abutment and with its cylindrical bore surrounding the tapered shaft section: A tapered sleeve is inserted between the tapered shaft section and the cylindrical roll bore. A load ring is rotatably fixed with respect to and axially shiftable on the shaft end section on the outboard side of the roll.
A resilient element is interposed between the sleeve and the load ring to yieldably maintain an initial gap between the load ring and the outboard flank of the roll, and a roll retainer is mounted on the shaft end section outboard of the load ring. The roll retainer acts in an abutting relationship with the load ring and via the resilient element to gradually and at least partially close the gap hetween the roll and load ring while gradually and precisely urging the sleeve into its wedged position. Screw members threaded through the roll retainer are then torqued to urge the load ring against the outboard flank of the roll, which in turn urges the inboard flank of the roll against the shaft abutment.
These and other features, advantages and objectives will now be described in greater detail with reference to the accompanying drawings, wherein:
Patent No.
5,934,131 (Shen), the tapered sleeve is urged into its operative wedged position by a rigid circular retainer. The retainer is rotatably fixed to the shaft, and is advanced against the sleeve by torquing a nut threaded onto the end of the shaft. Screws carried by the retainer are then tightened against an outboard flank of the roll to urge an inboard flank of the roll against a shaft shoulder. When thus tightened, the screws provide the primary means of transmitting torque from the roll shaft to the roll.
There are several drawbacks to this arrangement. First, the tapered sleeve may not be fully wedged into its operative position prior to tightening of the retainer screws against the outboard roll flank. Thus, the roll will not be properly centered on the roll shaft. Secondly, the outboard roll flank can be damaged by the torque transmitting retainer screws.
The objective of the present invention is to provide an improved roll assembly which overcomes these drawbacks.
A roll assembly in accordance with the present invention includes a support shaft with a tapered section leading from an abutment to an end section, and a ring shaped roll with inboard and outboard flanks and a cylindrical bore. The roll is axially mounted on the shaft with its inboard flank seated against the shaft abutment and with its cylindrical bore surrounding the tapered shaft section: A tapered sleeve is inserted between the tapered shaft section and the cylindrical roll bore. A load ring is rotatably fixed with respect to and axially shiftable on the shaft end section on the outboard side of the roll.
A resilient element is interposed between the sleeve and the load ring to yieldably maintain an initial gap between the load ring and the outboard flank of the roll, and a roll retainer is mounted on the shaft end section outboard of the load ring. The roll retainer acts in an abutting relationship with the load ring and via the resilient element to gradually and at least partially close the gap hetween the roll and load ring while gradually and precisely urging the sleeve into its wedged position. Screw members threaded through the roll retainer are then torqued to urge the load ring against the outboard flank of the roll, which in turn urges the inboard flank of the roll against the shaft abutment.
These and other features, advantages and objectives will now be described in greater detail with reference to the accompanying drawings, wherein:
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a vertical sectional view taken through a rolling mill roll assembly in accordance with the present invention;
Figures 2A-2D are sectional views depicting successive stages in the installation of the roll assembly shown in Figure 1;
Figure 3 is a perspective view of the resilient element interposed between the tapered sleeve and the load ring; and Figures 4 and 5 are horizontal sectional views taken respectively along lines 4-4 and 5-5 of Figure 1.
DESCRIPTION OF PREFERRED EIvIBODIMENT
With reference initially to Figures 1 and 3-5, a roll assembly in accordance with the present invention is generally depicted at 10 . The roll assembly comprises a support shaft 12 having a tapered section 14 leading from an abutment 16 provided by a pair of flingers 18a, 18b to an end section 20. The shaft end section 20 is externally splined as at 22 and threaded as at 24. A ring shaped roll 26 has inboard and outboard flanks 28, 30, external grooves 32, and a cylindrical bore 34. The roll 26 is axially mounted on the shaft 12., with its inboard flank 28 seated against the abutment 16, and with its cylindrical bore 34 surrounding the tapered shaft section 14.
A tapered sleeve 36 is inserted between the tapered shaft section 14 and the cylindrical bore 34 of the roll 26. The outboard end of the sleeve is internally splined as at 38 for mechanical interengagement with the external splines 22 of the shaft end section 20.
A load ring 40 is received on and is axially shiftable with respect to the shaft end section 20. The load ring is rotatably fixed to the shaft by means of internal splines 42 coacting in mechanical intererigagement with the external shaft splines 22. A disc spring 44 is captured in an internal recess of the load ring by means of a spring retainer 46 held in place by a snap ring 48, A roll retainer SO is thxeaded onto the end section 20 of the roll shaft. Sack bolts 52.are threaded in through bores containing thrust buttons 54.
The roll assembly is installed in stages as depicted by the following drawings:
Figure 2A
The roll 26 is mounted on the shaft end section 20 with its inboard flank 28 in contact with the abutment 16, and with its cylindrical bore 34 surrounding the tapered shaft section 14.
The tapered sleeve 36 is inserted without a radial interference fit between the roll bore 34 and the shaft section 14.
Figure 2B
The load ring 40 is mounted on the shaft end section 20, with its internal splines 44 interengaged with the external splines 22. The disc spring 44 coacts via the spring retainer 46 with the outboard end of the sleeve 36 to yieldably maintain a gap 56 between the load ring and the outboard flank 30 of the roll.
Figure 2C
The roll retainer 50 . is threaded onto the shaft end section 24 and torqued to compress the disc spring 44 to an extent sufficient to partially close the gap 56, with the resulting resilient force being sufficient to create an interference fit between the tapered sleeve 36 and the roll bore 34 and tapered shaft section 14. At this juncture, therefore, the roll is precisely centered on the shaft.
Figure 2D
The jack bolts 52 are torqued to urge the load ring 40 against the outboard flank 30 of the roll 26, which in turn results in the 'inboard roll flank 28 being urged against the abutment 16.
In light of the foregoing, it will now be understood that prior to torquing the jack bolts 52, the tapered sleeve 36 is firmly seated with an interference fit between the cylindrical roll bore and the tapered shaft section. This insures that the roll is precisely centered on and aligned axially with the roll shaft. Torquing the jack bolts then completes the installation by axially clamping the roll between the shaft abutment and the load ring, the latter being in annular area contact with the outboard roll flank. This reliably transmits torque from the roll-shaft to the roll without resulting roll damage.
I claim:
Figure 1 is a vertical sectional view taken through a rolling mill roll assembly in accordance with the present invention;
Figures 2A-2D are sectional views depicting successive stages in the installation of the roll assembly shown in Figure 1;
Figure 3 is a perspective view of the resilient element interposed between the tapered sleeve and the load ring; and Figures 4 and 5 are horizontal sectional views taken respectively along lines 4-4 and 5-5 of Figure 1.
DESCRIPTION OF PREFERRED EIvIBODIMENT
With reference initially to Figures 1 and 3-5, a roll assembly in accordance with the present invention is generally depicted at 10 . The roll assembly comprises a support shaft 12 having a tapered section 14 leading from an abutment 16 provided by a pair of flingers 18a, 18b to an end section 20. The shaft end section 20 is externally splined as at 22 and threaded as at 24. A ring shaped roll 26 has inboard and outboard flanks 28, 30, external grooves 32, and a cylindrical bore 34. The roll 26 is axially mounted on the shaft 12., with its inboard flank 28 seated against the abutment 16, and with its cylindrical bore 34 surrounding the tapered shaft section 14.
A tapered sleeve 36 is inserted between the tapered shaft section 14 and the cylindrical bore 34 of the roll 26. The outboard end of the sleeve is internally splined as at 38 for mechanical interengagement with the external splines 22 of the shaft end section 20.
A load ring 40 is received on and is axially shiftable with respect to the shaft end section 20. The load ring is rotatably fixed to the shaft by means of internal splines 42 coacting in mechanical intererigagement with the external shaft splines 22. A disc spring 44 is captured in an internal recess of the load ring by means of a spring retainer 46 held in place by a snap ring 48, A roll retainer SO is thxeaded onto the end section 20 of the roll shaft. Sack bolts 52.are threaded in through bores containing thrust buttons 54.
The roll assembly is installed in stages as depicted by the following drawings:
Figure 2A
The roll 26 is mounted on the shaft end section 20 with its inboard flank 28 in contact with the abutment 16, and with its cylindrical bore 34 surrounding the tapered shaft section 14.
The tapered sleeve 36 is inserted without a radial interference fit between the roll bore 34 and the shaft section 14.
Figure 2B
The load ring 40 is mounted on the shaft end section 20, with its internal splines 44 interengaged with the external splines 22. The disc spring 44 coacts via the spring retainer 46 with the outboard end of the sleeve 36 to yieldably maintain a gap 56 between the load ring and the outboard flank 30 of the roll.
Figure 2C
The roll retainer 50 . is threaded onto the shaft end section 24 and torqued to compress the disc spring 44 to an extent sufficient to partially close the gap 56, with the resulting resilient force being sufficient to create an interference fit between the tapered sleeve 36 and the roll bore 34 and tapered shaft section 14. At this juncture, therefore, the roll is precisely centered on the shaft.
Figure 2D
The jack bolts 52 are torqued to urge the load ring 40 against the outboard flank 30 of the roll 26, which in turn results in the 'inboard roll flank 28 being urged against the abutment 16.
In light of the foregoing, it will now be understood that prior to torquing the jack bolts 52, the tapered sleeve 36 is firmly seated with an interference fit between the cylindrical roll bore and the tapered shaft section. This insures that the roll is precisely centered on and aligned axially with the roll shaft. Torquing the jack bolts then completes the installation by axially clamping the roll between the shaft abutment and the load ring, the latter being in annular area contact with the outboard roll flank. This reliably transmits torque from the roll-shaft to the roll without resulting roll damage.
I claim:
Claims (5)
1. A rolling mill roll assembly comprising:
a support shaft having a tapered section leading from an abutment to an end section;
a ring-shaped roll having inboard and outboard flanks and a cylindrical bore, said roll being axially mounted on said shaft with its inboard flank seated against said abutment and with its cylindrical bore surrounding said tapered shaft section;
a tapered sleeve inserted between the tapered section of said shaft and the cylindrical bore of said roll;
a load ring rotatably fixed with respect to and axially shiftable on the end section of said shaft;
resilient means interposed between said load ring and said sleeve for yieldably maintaining a gap between said load ring and the outboard flank of said roll;
a roll retainer mounted on the end section of said shaft, said roll retainer acting in an abutting relationship with said load ring and via said resilient means to close said gap and axially wedge the tapered portion of said sleeve between the tapered section of said shaft and the cylindrical bore of said roll; and bolt members threaded in through bores in said roll retainer, whereupon torquing of said bolt members urges said load ring against the outboard flank of said roll, which in turn urges the outboard flank of said roll against said abutment.
a support shaft having a tapered section leading from an abutment to an end section;
a ring-shaped roll having inboard and outboard flanks and a cylindrical bore, said roll being axially mounted on said shaft with its inboard flank seated against said abutment and with its cylindrical bore surrounding said tapered shaft section;
a tapered sleeve inserted between the tapered section of said shaft and the cylindrical bore of said roll;
a load ring rotatably fixed with respect to and axially shiftable on the end section of said shaft;
resilient means interposed between said load ring and said sleeve for yieldably maintaining a gap between said load ring and the outboard flank of said roll;
a roll retainer mounted on the end section of said shaft, said roll retainer acting in an abutting relationship with said load ring and via said resilient means to close said gap and axially wedge the tapered portion of said sleeve between the tapered section of said shaft and the cylindrical bore of said roll; and bolt members threaded in through bores in said roll retainer, whereupon torquing of said bolt members urges said load ring against the outboard flank of said roll, which in turn urges the outboard flank of said roll against said abutment.
2. The roll assembly of claim 1 wherein said load ring is splined to the end section of said shaft.
3. The roll assembly of claim 1 wherein said resilient means comprises a disc spring interposed between an end of said sleeve and an adjacent surface of said load ring.
4. The roll assembly of claim 1 wherein said roll retainer is threaded onto the end section of said shaft.
5. The roll assembly of claim 1 further comprising thrust buttons interposed between said bolt members and said load ring.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18650602A | 2002-07-01 | 2002-07-01 | |
US10/186,506 | 2002-07-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2429264A1 true CA2429264A1 (en) | 2004-01-01 |
Family
ID=29720403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002429264A Abandoned CA2429264A1 (en) | 2002-07-01 | 2003-05-21 | Rolling mill roll assembly |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1378298A3 (en) |
JP (1) | JP2004034157A (en) |
KR (1) | KR20040004104A (en) |
CN (1) | CN1468671A (en) |
BR (1) | BR0301986A (en) |
CA (1) | CA2429264A1 (en) |
RU (1) | RU2003119856A (en) |
TW (1) | TW200405829A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117260590A (en) * | 2023-11-21 | 2023-12-22 | 智道铁路设备有限公司 | Test bench connecting device |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8852065B2 (en) * | 2008-05-07 | 2014-10-07 | Mitsubishi Materials Corporation | Rolling roll, rolling ring, rolling mill, and rolling roll assembling method |
CN101590490B (en) * | 2009-03-13 | 2011-01-05 | 东阳市朋诚科技有限公司 | Tapered bushing for line and bar rolling mill |
CN101648262B (en) * | 2009-08-29 | 2012-01-11 | 湖南九一连续铸轧实业有限责任公司 | Puller resetting device on shifting bearing block of twin-roll cast-rolling mill |
RU2497615C2 (en) * | 2011-10-31 | 2013-11-10 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" | Bearing assy of quarto rolling mill working rolls |
DE102012012293B4 (en) * | 2012-06-20 | 2017-10-26 | Sms Group Gmbh | Device for forming a workpiece |
KR101457791B1 (en) * | 2013-03-14 | 2014-11-04 | 한국원자력연구원 | Roll compactor |
ITTV20130084A1 (en) * | 2013-05-30 | 2014-12-01 | Pert S R L Con Unico Socio | ROLLER FOR THE HOT LAMINATION OF VERGELLE AND AFFINI AND MACHINE FOR THE HOT LAMINATION OF VERGELLE AND AFFINI PROVED WITH SUCH A ROLLER |
CN103962383B (en) * | 2014-05-07 | 2016-06-22 | 攀钢集团工程技术有限公司 | Cantilever rolling mill roll protection device |
CN105363793A (en) * | 2015-12-17 | 2016-03-02 | 重庆麦拓科技有限公司 | Rolling mill and connecting structure of roller and roller shaft of rolling mill |
DE102016219468A1 (en) * | 2016-10-07 | 2018-04-12 | Sms Group Gmbh | Rolling ring arrangement with a rolling ring and a roll shaft |
KR102108184B1 (en) | 2018-10-04 | 2020-05-12 | (주)네오텍 | Removable spacer |
US11478831B2 (en) * | 2020-03-04 | 2022-10-25 | Primetals Technologies USA LLC | Mechanical high speed roll change system for use with robotic roll change system |
CN115382920A (en) * | 2022-08-11 | 2022-11-25 | 包头钢铁(集团)有限责任公司 | Method for improving rigidity of wide and thick plate rolling mill |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD119144A2 (en) * | 1974-11-27 | 1976-04-12 | ||
DD158311A3 (en) * | 1981-01-15 | 1983-01-12 | Peter Kletzin | DEVICE FOR MOUNTING ROLLERS |
DD200552A1 (en) * | 1981-10-01 | 1983-05-18 | Gunter Hoerold | DEVICE FOR MOUNTING ROLL RINGS ON DRIVE SHAFTS |
DE8411110U1 (en) * | 1984-04-09 | 1985-08-08 | Kark, Uwe, 2104 Hamburg | Rolling device, consisting of a roll shaft, a roll ring and a conical sleeve |
US5934131A (en) * | 1998-08-10 | 1999-08-10 | Morgan Construction Company | Overhung roll assembly |
-
2003
- 2003-05-21 CA CA002429264A patent/CA2429264A1/en not_active Abandoned
- 2003-05-31 EP EP03012476A patent/EP1378298A3/en not_active Withdrawn
- 2003-06-16 CN CNA031494471A patent/CN1468671A/en active Pending
- 2003-06-18 TW TW092116558A patent/TW200405829A/en unknown
- 2003-06-25 BR BR0301986-1A patent/BR0301986A/en not_active IP Right Cessation
- 2003-06-30 RU RU2003119856/02A patent/RU2003119856A/en not_active Application Discontinuation
- 2003-07-01 KR KR1020030044093A patent/KR20040004104A/en not_active Application Discontinuation
- 2003-07-01 JP JP2003270083A patent/JP2004034157A/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117260590A (en) * | 2023-11-21 | 2023-12-22 | 智道铁路设备有限公司 | Test bench connecting device |
CN117260590B (en) * | 2023-11-21 | 2024-01-30 | 智道铁路设备有限公司 | Test bench connecting device |
Also Published As
Publication number | Publication date |
---|---|
EP1378298A3 (en) | 2005-10-19 |
EP1378298A2 (en) | 2004-01-07 |
TW200405829A (en) | 2004-04-16 |
CN1468671A (en) | 2004-01-21 |
JP2004034157A (en) | 2004-02-05 |
KR20040004104A (en) | 2004-01-13 |
BR0301986A (en) | 2004-08-31 |
RU2003119856A (en) | 2004-12-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
FZDE | Dead |