EP1378298A2 - Rolling mill roll assembly - Google Patents
Rolling mill roll assembly Download PDFInfo
- Publication number
- EP1378298A2 EP1378298A2 EP03012476A EP03012476A EP1378298A2 EP 1378298 A2 EP1378298 A2 EP 1378298A2 EP 03012476 A EP03012476 A EP 03012476A EP 03012476 A EP03012476 A EP 03012476A EP 1378298 A2 EP1378298 A2 EP 1378298A2
- Authority
- EP
- European Patent Office
- 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.)
- Withdrawn
Links
Images
Classifications
-
- 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
- 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
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/005—Cantilevered roll stands
Definitions
- the 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 means of tapered sleeves tightly wedged therebetween.
- 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.
- said load ring is splined to the end section of said shaft.
- said resilient means comprises a disc spring interposed between an end of said sleeve and an adjacent surface of said load ring.
- said roll retainer is threaded onto the end section of said shaft.
- the roll assembly may comprise thrust buttons interposed between said bolt members and said load ring.
- 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 sections.
- 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 between 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.
- 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 interengagement 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 50 is threaded onto the end section 20 of the roll shaft.
- Jack bolts 52 are threaded in through bores containing thrust buttons 54.
- the roll assembly is installed in stages as depicted by the following drawings:
- 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.
- 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.
- the roll retainer 50 is threaded onto the shaft end section 20 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.
- 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.
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)
- Rolling Contact Bearings (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
- The 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 means of tapered sleeves tightly wedged therebetween.
- 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 on 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.
- This problem is solved by the rolling mill comprising the features of claim 1.
- Preferred embodiments are comprised in the subclaims. Preferably, said load ring is splined to the end section of said shaft.
- According to another preferred embodiment said resilient means comprises a disc spring interposed between an end of said sleeve and an adjacent surface of said load ring.
- Preferably, said roll retainer is threaded onto the end section of said shaft.
- Further, the roll assembly may comprise thrust buttons interposed between said bolt members and said load ring.
- 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 sections. 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 between 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:
-
- Figure 1 is a vertical sectional view taken through a rolling mill roll assembly in accordance with the present invention;
- Figures 2A-2C 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.
-
- 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 atapered section 14 leading from anabutment 16 provided by a pair offlingers 18a, 18b to anend section 20. Theshaft end section 20 is externally splined as at 22 and threaded as at 24. A ring shapedroll 26 has inboard andoutboard flanks external grooves 32, and acylindrical bore 34. Theroll 26 is axially mounted on theshaft 12, with itsinboard flank 28 seated against theabutment 16, and with itscylindrical bore 34 surrounding thetapered shaft section 14. - A
tapered sleeve 36 is inserted between thetapered shaft section 14 and thecylindrical bore 34 of theroll 26. The outboard end of the sleeve is internally splined as at 38 for mechanical interengagement with theexternal splines 22 of theshaft end section 20. - A
load ring 40 is received on and is axially shiftable with respect to theshaft end section 20. The load ring is rotatably fixed to the shaft by means ofinternal splines 42 coacting in mechanical interengagement with theexternal shaft splines 22. Adisc spring 44 is captured in an internal recess of the load ring by means of aspring retainer 46 held in place by asnap ring 48. - A
roll retainer 50 is threaded onto theend section 20 of the roll shaft.Jack bolts 52 are threaded in through bores containingthrust buttons 54. - The roll assembly is installed in stages as depicted by the following drawings:
- The
roll 26 is mounted on theshaft end section 20 with itsinboard flank 28 in contact with theabutment 16, and with itscylindrical bore 34 surrounding thetapered shaft section 14. Thetapered sleeve 36 is inserted without a radial interference fit between theroll bore 34 and theshaft section 14. - The
load ring 40 is mounted on theshaft end section 20, with itsinternal splines 44 interengaged with theexternal splines 22. Thedisc spring 44 coacts via thespring retainer 46 with the outboard end of thesleeve 36 to yieldably maintain agap 56 between the load ring and theoutboard flank 30 of the roll. - The
roll retainer 50 is threaded onto theshaft end section 20 and torqued to compress thedisc spring 44 to an extent sufficient to partially close thegap 56, with the resulting resilient force being sufficient to create an interference fit between thetapered sleeve 36 and the roll bore 34 andtapered shaft section 14. At this juncture, therefore, the roll is precisely centered on the shaft. - The
jack bolts 52 are torqued to urge theload ring 40 against theoutboard flank 30 of theroll 26, which in turn results in theinboard roll flank 28 being urged against theabutment 16. - In light of the foregoing, it will now be understood that prior to torquing the
jack bolts 52, thetapered 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.
Claims (5)
- 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; andbolt 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.
- The roll assembly of claim 1 wherein said load ring is splined to the end section of said shaft.
- The roll assembly of claim 1 or 2, wherein said resilient means comprises a disc spring interposed between an end of said sleeve and an adjacent surface of said load ring.
- The roll assembly of claim 1, 2 or 3, wherein said roll retainer is threaded onto the end section of said shaft.
- The roll assembly of claim 1, 2, 3 or 4 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 | |
US186506 | 2002-07-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1378298A2 true EP1378298A2 (en) | 2004-01-07 |
EP1378298A3 EP1378298A3 (en) | 2005-10-19 |
Family
ID=29720403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03012476A Withdrawn EP1378298A3 (en) | 2002-07-01 | 2003-05-31 | 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 (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090280972A1 (en) * | 2008-05-07 | 2009-11-12 | Mitsubishi Materials Corporation | Rolling roll, rolling ring, rolling mill, and rolling roll assembling method |
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 |
EP2676745A1 (en) * | 2012-06-20 | 2013-12-25 | SMS Meer GmbH | Device for coating a workpiece |
CN105531046A (en) * | 2013-05-30 | 2016-04-27 | 佩特有限公司 | Roller for hot rolling of wire rods and the like, and wire-rod and the like, hot-rolling machine provided with said roller |
DE102016219468A1 (en) * | 2016-10-07 | 2018-04-12 | Sms Group Gmbh | Rolling ring arrangement with a rolling ring and a roll shaft |
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 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
KR101457791B1 (en) * | 2013-03-14 | 2014-11-04 | 한국원자력연구원 | Roll compactor |
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 |
KR102108184B1 (en) | 2018-10-04 | 2020-05-12 | (주)네오텍 | Removable spacer |
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 |
CN117260590B (en) * | 2023-11-21 | 2024-01-30 | 智道铁路设备有限公司 | Test bench connecting device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD119144A2 (en) * | 1974-11-27 | 1976-04-12 | ||
DE3143878A1 (en) * | 1981-01-15 | 1982-08-05 | VEB Schwermaschinenbau Kombinat "Ernst Thälmann" Magdeburg, DDR 3011 Magdeburg | Apparatus for fixing disc rolls |
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
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD119144A2 (en) * | 1974-11-27 | 1976-04-12 | ||
DE3143878A1 (en) * | 1981-01-15 | 1982-08-05 | VEB Schwermaschinenbau Kombinat "Ernst Thälmann" Magdeburg, DDR 3011 Magdeburg | Apparatus for fixing disc rolls |
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 |
Non-Patent Citations (1)
Title |
---|
FINK P ET AL: "CLAMPING SYSTEM FOR COMPOSITE BAR AND ROD MILL ROLL RINGS" IRON AND STEEL ENGINEER, ASSOCIATION OF IRON AND STEEL ENGINEERS. PITTSBURGH, US, vol. 73, no. 10, 1 October 1996 (1996-10-01), pages 21-24, XP000640759 ISSN: 0021-1559 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090280972A1 (en) * | 2008-05-07 | 2009-11-12 | Mitsubishi Materials Corporation | Rolling roll, rolling ring, rolling mill, and rolling roll assembling method |
US8852065B2 (en) * | 2008-05-07 | 2014-10-07 | Mitsubishi Materials Corporation | Rolling roll, rolling ring, rolling mill, and rolling roll assembling method |
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 |
EP2676745A1 (en) * | 2012-06-20 | 2013-12-25 | SMS Meer GmbH | Device for coating a workpiece |
DE102012012293B4 (en) * | 2012-06-20 | 2017-10-26 | Sms Group Gmbh | Device for forming a workpiece |
CN105531046A (en) * | 2013-05-30 | 2016-04-27 | 佩特有限公司 | Roller for hot rolling of wire rods and the like, and wire-rod and the like, hot-rolling machine provided with said roller |
DE102016219468A1 (en) * | 2016-10-07 | 2018-04-12 | Sms Group Gmbh | Rolling ring arrangement with a rolling ring and a roll shaft |
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 |
Also Published As
Publication number | Publication date |
---|---|
BR0301986A (en) | 2004-08-31 |
KR20040004104A (en) | 2004-01-13 |
EP1378298A3 (en) | 2005-10-19 |
JP2004034157A (en) | 2004-02-05 |
TW200405829A (en) | 2004-04-16 |
CN1468671A (en) | 2004-01-21 |
RU2003119856A (en) | 2004-12-27 |
CA2429264A1 (en) | 2004-01-01 |
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