US1655063A - Rolling mill with supported working rolls - Google Patents
Rolling mill with supported working rolls Download PDFInfo
- Publication number
- US1655063A US1655063A US156937A US15693726A US1655063A US 1655063 A US1655063 A US 1655063A US 156937 A US156937 A US 156937A US 15693726 A US15693726 A US 15693726A US 1655063 A US1655063 A US 1655063A
- Authority
- US
- United States
- Prior art keywords
- rolls
- roller
- working rolls
- working
- bearings
- 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.)
- Expired - Lifetime
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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
- B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls
-
- 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
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
-
- 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
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B13/04—Three-high arrangement
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
Definitions
- This invention relates more particularly to that type ofrolling-mills for the elongation of material in'which the working rolls are supported'
- the diameter of the rolls should be as small as possible, because experience has shown that rolls of small diameter produce great elongation of the material to be rolled. Said rolls of small diameter, however, show, under 1 the counter-pressure of the material to be I rolled, a considerable sagging or deflection and must therefore be supported.
- the knownsupporting rolls are applicable for vplain workingrolls only, and not for rolls having various diameters on their longitudinal extent. In addition thereto, there occur very strong pressures and frictional strains in the necks of. the supporting rolls, so that Special cooling arrangements have to be provided.
- rolling-mills have become known, in which the comparatively thin working rolls are supported by short sup-v porting rolls revolubly arranged on stationary shafts and distributed over the whole length of the working rolls. Said supporting rolls are secured against lateral displacement and preferably constructed as roller-bearings,.to ensure a reliable working.
- each working 'roll a plurality of short supporting rolls, comprising each a plurality of roller-bearings revolubly mounted on a stationary shaft and a; roller-shaped body enclosing the latter and '45 bein'g in'direct contact with the working roll, cavities being formed by said rollerbe'arings within the supporting rolls, which cavities are used as lubricating chambers.
- the distances between the roller-bearings are secured by inwardlyprojecting. shoulders on the roller-shaped body and by inter-v mediary rings on said shaft respectively, while the roller-bearings are secured against outward displacement by a shoulder on said a ball-bearing at one end of said body respectively.
- Fig. 1 is a side view of a twin rolling-mill
- Figs. 2 and 3 are respectively a longitudinal and a transverse section through the latter
- Fig. 4 shows a detail of Fig. 2 on a larger scale
- Fig. 5 shows the mountin of the ends of the working rolls in a si e view
- Fig. 6 the same in a horizontal section on the line 66 of Fig. 5
- Fig. 7 shows the mounting of the ends of the'supporting rolls in a side view
- Fig. 8 the same in a horizontal section on the line 8-8 of Fig. 7.
- Fig. 9 is a similar view to Fig. 3 of a threehigh rolling-mill
- Fig. 10 shows part of a working roll for the latter with a bearing for the same in section, on a larger scale.
- the two working rolls a of the twin roll ing-mill illustrated in Figs. 1 to 8 inclusive, are each supported by two pairs of supporting members I), 0 revolubly arranged on stationary shafts d, which are immovably mounted in housings e and screw-threaded at their ends so as to be fixed at the outside of said housings by means of nuts d (Fi 4).
- each supporting member comprises two rollerbearings'of which the inner counter-rings are fitted with races for obliquely arranged rollers g, on which the outer counter-rings it are revolubly mounted.
- Said outer rings 71 are connected and enclosed by an outer steelcylinder a, a cavity being left between the rings to serve as a lubricating chamber.
- Said ringsbear attheir inner ad acent ends against. an inwardly projecting shoulder m of the steel cylinder 2' and against anintermediary ring 71.
- the steel cylinder 2' forming thus a roller-shaped body, is indirect contact with the working roll to be supported,
- Fig. 2 slightly convex rim
- the working rolls a can be laterally withdrawn after removal of the guiding-rails 8, while the housing in the opposite framing remains therein. A dismounting of the counter-beam ings is not required.
- the housing e for the supporting roll I) is held at one side by a removable rail t.
- r Fig. 9 illustrates a three-high rolling-mill having a fixed middle working roll a and supporting rolls b 0 for the rotary working rolls a
- Fig. 10 shows a bearing for a rotary working roll a j
- Said bearing is provided with -a middle cavity u and two lateral cavities 2).
- the latter receive eachtwo or more metal rin s w located at an angle of 49 and fitted on t ieir outer sides and edges with a strong washer z of rubber linen on which acts a steel disc m by means of an outwardly projecting screw y.
- Said cavities v are filled with a lubricant
Description
Jan. 3, 1928.
A. KRIWAN' ROLLING KILL WITH SUPPORTED WORKING ROLLS 3 Sheets-Sheet 1 Filed Dec. 24. 1926 Jan. s, 1928. r 1,655,063
A. KRIWAN ROLLING MILL WITH SUPPORTED WORKING ROLLS Filed Dec. 24, 192Q 3 Sheets-Sheet 2 d I|| f ,l
I n 0 1 5222*? 12 x A 9 a5:
. i 0/ r: 556;: [We a Jan. 3, 1928. 1,655,063
A. KRIWAN ROLLING MILL WITH SUPPORTED WORKING ROLLS Filed D60. 24. 1926 3 Sheets-Sheet 3 lf/frrasjs'es: MJQ- f/Zat X j rolls and undergoing. a shifting motion shaft and by Patented as; 3, 1928.
ARNOLD KRIWAN, OF MAHRISCH-OSTRAU-PRIVOZ, OZECHOSLOVAKIA.
ROLLIHG MILL WITH SUPPOB'I'ED WORKING ROLLS.
Application filed December 24, 1926, Serial No. 156,937, and in Germany December 8, 1924.
This invention relates more particularly to that type ofrolling-mills for the elongation of material in'which the working rolls are supported' In such rolling-mills the diameter of the rolls should be as small as possible, because experience has shown that rolls of small diameter produce great elongation of the material to be rolled. Said rolls of small diameter, however, show, under 1 the counter-pressure of the material to be I rolled, a considerable sagging or deflection and must therefore be supported. For this purpose it has previously been proposed to adopt, either, supporting rolls extending over the entire length of the working rolls and running in bearings in the housings, or supporting rails resting'on the working .while the rolls are revolving. The knownsupporting rolls are applicable for vplain workingrolls only, and not for rolls having various diameters on their longitudinal extent. In addition thereto, there occur very strong pressures and frictional strains in the necks of. the supporting rolls, so that Special cooling arrangements have to be provided.
' Furthermore, rolling-mills, have become known, in whichthe comparatively thin working rolls are supported by short sup-v porting rolls revolubly arranged on stationary shafts and distributed over the whole length of the working rolls. Said supporting rolls are secured against lateral displacement and preferably constructed as roller-bearings,.to ensure a reliable working. In order to attain a better support of'the working rolls and to reduce the number of the supporting members, the present invention provides for each working 'roll a plurality of short supporting rolls, comprising each a plurality of roller-bearings revolubly mounted on a stationary shaft and a; roller-shaped body enclosing the latter and '45 bein'g in'direct contact with the working roll, cavities being formed by said rollerbe'arings within the supporting rolls, which cavities are used as lubricating chambers. The distances between the roller-bearings are secured by inwardlyprojecting. shoulders on the roller-shaped body and by inter-v mediary rings on said shaft respectively, while the roller-bearings are secured against outward displacement by a shoulder on said a ball-bearing at one end of said body respectively.
The accompanying drawings illustrate the improved rolling-mill in two appropriate constructional forms, namely as a twin and as a threc-high rolling-mill respectively Fig. 1 is a side view of a twin rolling-mill, Figs. 2 and 3 are respectively a longitudinal and a transverse section through the latter, Fig. 4 shows a detail of Fig. 2 on a larger scale, Fig. 5 shows the mountin of the ends of the working rolls in a si e view, and Fig. 6 the same in a horizontal section on the line 66 of Fig. 5, Fig. 7 shows the mounting of the ends of the'supporting rolls in a side view, and Fig. 8 the same in a horizontal section on the line 8-8 of Fig. 7. Fig. 9 is a similar view to Fig. 3 of a threehigh rolling-mill, and Fig. 10 shows part of a working roll for the latter with a bearing for the same in section, on a larger scale.
76 The two working rolls a of the twin roll ing-mill illustrated in Figs. 1 to 8 inclusive, are each supported by two pairs of supporting members I), 0 revolubly arranged on stationary shafts d, which are immovably mounted in housings e and screw-threaded at their ends so as to be fixed at the outside of said housings by means of nuts d (Fi 4).
As shown in Fig. 4 on a larger sca e, each supporting member comprises two rollerbearings'of which the inner counter-rings are fitted with races for obliquely arranged rollers g, on which the outer counter-rings it are revolubly mounted. Said outer rings 71, are connected and enclosed by an outer steelcylinder a, a cavity being left between the rings to serve as a lubricating chamber. Said ringsbear attheir inner ad acent ends against. an inwardly projecting shoulder m of the steel cylinder 2' and against anintermediary ring 71. on the shaft (Z respectively, while theyare secured against outward displacement by a' shoulder 0 on the shaft (13 and a ball-bearing 72 at one end of the cylinder 2' respectively; end discs 9, r, of which the latter bears from inside against the housing 6, serving to close the steel cylinder i at its ends and to provide counter-bearings for the outer rings is and for the ball-bearing 3;
respectively. The steel cylinder 2' forming thus a roller-shaped body, is indirect contact with the working roll to be supported,
and it ispreferably provided with a slightly convex rim (Fig. 2) to prevent undue friction ith the working roll when the latter-is under high-load or pressure.
' As shown in Figs. 5 and 6, the working rolls a can be laterally withdrawn after removal of the guiding-rails 8, while the housing in the opposite framing remains therein. A dismounting of the counter-beam ings is not required. v
As shown in Figs. 7 and 8, the housing e for the supporting roll I) is held at one side by a removable rail t.
The roller-bearings mounted on the stationary shafts, as well as the supporting bearings arranged -on the housings, remain always closed. r Fig. 9 illustrates a three-high rolling-mill having a fixed middle working roll a and supporting rolls b 0 for the rotary working rolls a, while Fig. 10 shows a bearing for a rotary working roll a j Said bearing is provided with -a middle cavity u and two lateral cavities 2). The latter receive eachtwo or more metal rin s w located at an angle of 49 and fitted on t ieir outer sides and edges with a strong washer z of rubber linen on which acts a steel disc m by means of an outwardly projecting screw y. Said cavities v are filled with a lubricant,
which is tightly held therein by means of the just described contrivance, while the middle cavity a serves for cooling purposes.
What I claim, is
1. The combination, 1n a rolling-mill, of supported working rolls, a plurality of my hand.
axially immovableshort supporting rolls for each workingroll distributed over substantially the whole length of the latter and comprising each' a pluralit of. roller-bearings and a roller-shaped bo y enclosing the latter and being in direct contact with said working rolls, lubricating cavities being formed by said roller-bearings in saidsupmeans to secure the latter against outward displacement.
3. In a construction as specified in claim 1, an inwardly projecting shoulder on said roller-shaped body, an intermediary ring on said shaft, both arranged between the adjacent inner ends of said.roller-bearings, a shoulder on said shaft bearing against one .outer end of said roller-bearings, and a ballbearing at one end of said roller-shaped body bearingagainst the other outer end of said roller-bearings.
In testimony whereof I have hereunto set ARNOLD KRIWAN.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK91991D DE460694C (en) | 1924-12-09 | 1924-12-09 | Rolling mill |
GB2973326A GB285983A (en) | 1926-11-24 | 1926-11-24 | Improvements relating to rolling mills |
Publications (1)
Publication Number | Publication Date |
---|---|
US1655063A true US1655063A (en) | 1928-01-03 |
Family
ID=25984540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US156937A Expired - Lifetime US1655063A (en) | 1924-12-09 | 1926-12-24 | Rolling mill with supported working rolls |
Country Status (5)
Country | Link |
---|---|
US (1) | US1655063A (en) |
BE (1) | BE337629A (en) |
CH (1) | CH122120A (en) |
DE (1) | DE460694C (en) |
FR (1) | FR625066A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3307386A (en) * | 1962-07-20 | 1967-03-07 | Canada Steel Co | Four-high rolling mill |
-
0
- BE BE337629D patent/BE337629A/xx unknown
-
1924
- 1924-12-09 DE DEK91991D patent/DE460694C/en not_active Expired
-
1926
- 1926-11-24 FR FR625066D patent/FR625066A/en not_active Expired
- 1926-11-24 CH CH122120D patent/CH122120A/en unknown
- 1926-12-24 US US156937A patent/US1655063A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3307386A (en) * | 1962-07-20 | 1967-03-07 | Canada Steel Co | Four-high rolling mill |
Also Published As
Publication number | Publication date |
---|---|
BE337629A (en) | |
CH122120A (en) | 1927-08-16 |
DE460694C (en) | 1928-06-02 |
FR625066A (en) | 1927-08-02 |
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