EP1056553A1 - Walzwerk mit arbeitswalzen und mehrteiligen stützwalzen - Google Patents
Walzwerk mit arbeitswalzen und mehrteiligen stützwalzenInfo
- Publication number
- EP1056553A1 EP1056553A1 EP99916753A EP99916753A EP1056553A1 EP 1056553 A1 EP1056553 A1 EP 1056553A1 EP 99916753 A EP99916753 A EP 99916753A EP 99916753 A EP99916753 A EP 99916753A EP 1056553 A1 EP1056553 A1 EP 1056553A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base body
- rolling
- rolling mill
- eccentric
- rolls
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 55
- 230000007935 neutral effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
-
- 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
- B21B27/05—Sleeved rolls with deflectable sleeves
Definitions
- the invention relates to a rolling mill with work rolls and multi-part backup rolls, consisting of a base body with a plurality of roller bearings arranged thereon in the longitudinal direction thereof, which with its outer rings rotatably support a sleeve encompassing the roller bearings, the inner surface of which rests on all sides on the outer surfaces of the outer rings of the roller bearings and the outer surface of which forms the roll barrel of the backup roll, 3 roller bearings being provided along the length of the base body, of which the middle roller bearing is designed as a tapered roller bearing.
- Such a rolling mill is known from US 19 10 158.
- the sleeve rolls between the Arberts roll and the rolling bearing outer rings facing the work roll in relation to the support roll support.
- the sleeve runs freely without contact with the bearings.
- a disadvantage of the known solution is that the stability of the movement at high rolling loads is not given for the flexing movement of the outer sleeve of the support roller between the bearings of the support roller and the work roll.
- the flexing movements between the sleeve and the bearing lead only partially through this Concerns of the rolling bearing exterior to significant wear and tear, which negatively affect the adjustability of the rolling mill and thus the quality of the rolled product.
- no practical application of a backup roller of the generic type is known
- the sleeve of the backup roller is deformed in such a way that it acquires a convex or neutral basic shape.
- the spherical roller bearings are tilted so that their service life is further reduced.
- the object of the present invention is, based on known eccentrically adjustable back-up rolls, to improve their construction in such a way that, with reduced manufacturing costs, a significantly longer service life of the components subject to wear is to be expected and that, as a result of the simplified construction, the sleeve can be assembled and disassembled on the Rolling bearings is facilitated
- the essence of the present invention then consists in dispensing with an eccentric adjustment of the central region of the support roller, instead instead bending only the two edge regions of the supporting roller in an eccentrically adjusted manner and in the process using simple cylindrical roller bearings which are paired with eccentric bushings which can be rotated on the base body.
- Cylindrical roller bearings have clear advantages over spherical roller bearings. Spherical roller bearings are less precise in production, so that they are evenly worn known eccentric backup rolls with a variety of spherical roller bearings is not easy to achieve. In the case of cylindrical roller bearings, an axial displacement of the rolling elements on the rings during a revolution of the order of magnitude of 1% is permitted, which allows a more favorable setting than is possible with spherical roller bearings. In addition, cylindrical roller bearings are cheaper to manufacture and therefore cheaper.
- a stepless swivel drive is assigned to each eccentric bushing and both swivel drives can be synchronized. In this way, a continuous adjustment of the sleeve elevation in the edge area is possible.
- the base body is fixed non-rotatably in the scaffold stand.
- Complex rotary drives for the base body are dispensed with in this solution because the adjustment of the support roller or the sleeve relative to the base body takes place via the separate swivel drives of the eccentric bushings and no longer via the rotation of the base body as in the prior art.
- the base body always remains in a neutral position, the rolling force is always transmitted in one and the same position to the stand via the pedestals.
- a self-adjustable tilting segment is provided which enables the inclined position of the cylindrical roller bearing.
- This tilting segment achieves a particularly favorable load distribution on the cylindrical roller bearings and thus a significant increase in the service life.
- the inner bearing rings are deformed, which is cheaper than the inclined position of the outer rings in the spherical roller bearing, which leads to the torsion of the raceway.
- the tilting segment causes the roller bearing rings to deform in the load area of the support rollers; If the tilting segment is deflected differently, the force can be safely guided into the base body via this.
- the ring In the transition from the tilting segment to the normal, non-deformable, supported track, the ring is rotated somewhat; however, since this happens in an area without roller load, where only a few rollers bear while the others are unloaded, this is harmless.
- the tilting segment is spherical in the longitudinal direction of the base body and consists of a plain bearing material that can be relieved of hydrostatic stress.
- the Hydrostatic relief ensures that the high rolling forces do not block the roll's adjustability even under load.
- the eccentric bushes are slidably rotatably on eccentric surfaces of the base body, the eccentricity of which allows the eccentric axles to be aligned with the base body longitudinal axis in a neutral rotational position of the eccentric bushes.
- a neutral position of the eccentric bushing is created, in which there is no offset between the axes. This position is used to open the sleeve. Turning the eccentric bushes causes an offset of approx. 2 mm, in this position the rolling is carried out.
- the base body is flattened in its two edge areas. This is to ensure that the eccentric bushes and the roller bearing rings can expand when the jacket is tilted.
- the flattening can take place by milling the base body locally on the circumference on the side of the base body in planes parallel to the rolling plane.
- the area of the base body opposite the tilting segments is bevelled locally in the longitudinal direction on the circumference, the bevels running from the center of the rolling bearing inner ring to both sides .
- This measure can cause the eccentric bushing and the roller bearings to crooked; on the side facing away from the load area, this solution is simpler than another tilting segment and does not weaken the cross section of the base body which is subjected to bending.
- this contact area should be hydrostatically relieved according to a further feature of the invention. This makes the adjustment mechanism easy to move, which enables the sleeves to be adjusted and adjusted under load.
- An essential advantage of the present invention is its simplicity. It allows standard rolling elements to be used without problems for those that encompass the rolling bearings Sleeve, whereby the disadvantages described are avoided and an inexpensive solution is created.
- the basic body with the eccentric bushes and their adjustment drives is suitable for long-term use, only the sleeve as a wearing part has to be replaced after grinding.
- FIG. 1 shows a longitudinal section through the support roller according to the invention
- Figure 2 shows a cross section through the support roller of Figure 1 in the area of
- Tilting segment in the installed position of the sleeve and Figure 3 shows the cross section according to Figure 2 with extreme eccentric position.
- the backup roller according to the invention is shown in longitudinal section. It consists essentially of the base body 1, on which the sleeve 2 is rotatably mounted about the longitudinal axis 3 of the base body.
- three roller bearings are arranged between the base body 1 and the sleeve 2, of which the middle roller bearing is designed as a double tapered roller bearing 4 and the two roller bearings arranged on both sides of it as a cylindrical roller bearing 5.
- the keg roller bearing 4 is seated directly on the base body, an eccentric bushing 7 is rotatably arranged in each case between the inner rings 6 of the cylindrical roller bearing 5 and the peripheries of the base body 1 in the edge regions thereof.
- the eccentric bushes 7 are rotatably driven independently of one another but can be synchronized, for which purpose a spur gear 8 with a (not shown) drive is provided, which engages with an externally toothed pinion in the internal toothing of a rotating sleeve 9 which is rotatably mounted on the ends of the base body and which engages in a form-fitting manner in each of the ends engages two eccentric bushes 7 and rotates them.
- the base body is fixed non-rotatably via a circumferentially toothed pin 10; the pin 10 is supported on the chock 11 in which the base body 1 is received in the scaffolding frame 11.
- each tilting segment 12 On the side of the support roller facing the rolling stock, a recess is milled into the base body 1 on both sides of the tapered roller bearing 4, into which a tilting segment 12 assigned to each cylindrical roller bearing 5 is inserted.
- the tilting segment is spherical in the longitudinal direction of the base body 1 and carries on its side facing away from the ball 13 and essentially corresponding to the outer circumference of the base body Eccentric bushes 7, on which the inner rings 6 of the cylindrical roller bearing 5 are supported.
- Eccentric bushes 7, On the eccentric bushes 7 are rotated, a bending force is applied to the sleeve 2 of the support roller, which leads to a convex or concave deformation of the sleeve 2. So that the cylindrical roller bearings are not damaged by these eccentrically acting bending forces, each tilting segment 12 enables the cylindrical roller bearings 5 to be tilted sufficiently by the tilting segments slidably adjusting themselves via their balls 13.
- the areas of the base body 1 opposite the tilting segments 12 are chamfered locally at the circumference in the longitudinal direction of the base body 1, the bevels starting from the central area of the cylindrical roller bearing 5. run on both sides.
- the bevels are flat and run only over a peripheral section of the base body 1 (see FIG. 2).
- FIG. 2 it can be seen that flat bevels, which are denoted by 15, are also provided on the outer circumference of the base body 1 in its crop areas parallel to the rolling plane. These bevels allow a slight expansion of the eccentric bush 7 and the inner ring 6 in the load direction, which can occur when the sleeve 2 is inclined relative to the base body 1. Since, according to the invention, eccentric surfaces are also formed on the base body 1 in the supporting region of the eccentric bushing 7, the eccentricity of which corresponds to that of the eccentric bushings, a corresponding neutral position can be set by rotating the eccentric bushing 7 on the eccentric surfaces denoted by 14, in which the sleeve 2 is not subjected to any bending the sleeve can be assembled and disassembled in this position. This position is shown in Figure 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Support Of The Bearing (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Crushing And Grinding (AREA)
- Rolling Contact Bearings (AREA)
- Metal Rolling (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19807601 | 1998-02-17 | ||
DE19807601A DE19807601C1 (de) | 1998-02-17 | 1998-02-17 | Walzwerk mit Arbeitswalzen und mehrteiligen Stützwalzen |
PCT/DE1999/000499 WO1999041025A1 (de) | 1998-02-17 | 1999-02-17 | Walzwerk mit arbeitswalzen und mehrteiligen stützwalzen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1056553A1 true EP1056553A1 (de) | 2000-12-06 |
EP1056553B1 EP1056553B1 (de) | 2002-05-08 |
Family
ID=7858669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99916753A Expired - Lifetime EP1056553B1 (de) | 1998-02-17 | 1999-02-17 | Walzwerk mit arbeitswalzen und mehrteiligen stützwalzen |
Country Status (8)
Country | Link |
---|---|
US (1) | US6286355B1 (de) |
EP (1) | EP1056553B1 (de) |
JP (1) | JP4331893B2 (de) |
AT (1) | ATE217216T1 (de) |
AU (1) | AU3515099A (de) |
DE (2) | DE19807601C1 (de) |
ES (1) | ES2173735T3 (de) |
WO (1) | WO1999041025A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100951561B1 (ko) * | 2005-07-07 | 2010-04-09 | 에스엠에스 지마크 악티엔게젤샤프트 | 압연기용 지지 롤 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6826941B2 (en) | 2000-12-29 | 2004-12-07 | Ronald L. Plesh, Sr. | Roller apparatus with improved height adjustability |
US6532788B2 (en) * | 2000-12-29 | 2003-03-18 | Ronald L. Plesh, Sr. | Roller apparatus |
UA89530C2 (uk) * | 2005-07-07 | 2010-02-10 | Смс Зимаг Акциенгезелльшафт | Опорний валок для прокатного стана та спосіб його виготовлення |
DE102008027494A1 (de) | 2007-06-14 | 2008-12-18 | Sms Demag Ag | Mehrteilige Walze |
JP2013185673A (ja) * | 2012-03-09 | 2013-09-19 | Ntn Corp | バックアップロール軸受装置 |
DE102012206905A1 (de) * | 2012-04-26 | 2013-10-31 | Sms Siemag Ag | Stützrolle |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1910158A (en) * | 1928-03-09 | 1933-05-23 | Timken Roller Bearing Co | Rolling mill |
US3731357A (en) * | 1970-06-15 | 1973-05-08 | Yamauchi Rubber Ind Co Ltd | Apparatus for adjusting the altitude of the chord of an expanding roll |
JPS6418512A (en) * | 1987-07-13 | 1989-01-23 | Hitachi Ltd | Reinforcing roll |
JPH03248704A (ja) * | 1990-02-22 | 1991-11-06 | Sumitomo Metal Ind Ltd | クラウン調整ロールとそれを備えた圧延機 |
JP2977379B2 (ja) * | 1992-07-24 | 1999-11-15 | 三菱重工業株式会社 | 圧延機の分割型補強ロール |
EP0584642B1 (de) * | 1992-08-12 | 1997-03-12 | Mitsubishi Jukogyo Kabushiki Kaisha | Walzwerk |
JP3021213B2 (ja) * | 1992-11-16 | 2000-03-15 | 三菱重工業株式会社 | スリーブ補強ロール式圧延機 |
US5943895A (en) * | 1997-04-24 | 1999-08-31 | Sms Schloemann-Siemag Aktiengesellschaft | Dynamic crown control back-up roll assembly |
DE19735568C2 (de) * | 1997-08-11 | 2000-07-20 | Mannesmann Ag | Walzwerk mit Arbeitswalzen und mehrteiligen Stützwalzen |
-
1998
- 1998-02-17 DE DE19807601A patent/DE19807601C1/de not_active Expired - Fee Related
-
1999
- 1999-02-17 DE DE59901398T patent/DE59901398D1/de not_active Expired - Lifetime
- 1999-02-17 JP JP2000531262A patent/JP4331893B2/ja not_active Expired - Fee Related
- 1999-02-17 AU AU35150/99A patent/AU3515099A/en not_active Abandoned
- 1999-02-17 US US09/622,495 patent/US6286355B1/en not_active Expired - Lifetime
- 1999-02-17 ES ES99916753T patent/ES2173735T3/es not_active Expired - Lifetime
- 1999-02-17 EP EP99916753A patent/EP1056553B1/de not_active Expired - Lifetime
- 1999-02-17 WO PCT/DE1999/000499 patent/WO1999041025A1/de active IP Right Grant
- 1999-02-17 AT AT99916753T patent/ATE217216T1/de active
Non-Patent Citations (1)
Title |
---|
See references of WO9941025A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100951561B1 (ko) * | 2005-07-07 | 2010-04-09 | 에스엠에스 지마크 악티엔게젤샤프트 | 압연기용 지지 롤 |
Also Published As
Publication number | Publication date |
---|---|
EP1056553B1 (de) | 2002-05-08 |
JP2002502705A (ja) | 2002-01-29 |
ES2173735T3 (es) | 2002-10-16 |
DE59901398D1 (de) | 2002-06-13 |
US6286355B1 (en) | 2001-09-11 |
ATE217216T1 (de) | 2002-05-15 |
AU3515099A (en) | 1999-08-30 |
DE19807601C1 (de) | 1999-08-12 |
WO1999041025A1 (de) | 1999-08-19 |
JP4331893B2 (ja) | 2009-09-16 |
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