GB2124950A - Apparatus for supporting the fixed and rotating guide shoes in a piercing or elongating rolling mill - Google Patents
Apparatus for supporting the fixed and rotating guide shoes in a piercing or elongating rolling mill Download PDFInfo
- Publication number
- GB2124950A GB2124950A GB08317473A GB8317473A GB2124950A GB 2124950 A GB2124950 A GB 2124950A GB 08317473 A GB08317473 A GB 08317473A GB 8317473 A GB8317473 A GB 8317473A GB 2124950 A GB2124950 A GB 2124950A
- Authority
- GB
- United Kingdom
- Prior art keywords
- guide
- shoe
- stand
- fixed
- arm structure
- 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 31
- 239000000969 carrier Substances 0.000 claims abstract description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/12—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially parallel to the axis of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Knitting Machines (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Turning (AREA)
Abstract
A piercing or elongating rolling mill with superimposed rolls (2)3 mounted rotatably within a stand 4 is provided with apparatus for supporting opposed guide shoes 22(23) of the fixed or rotary type on corresponding guide- shoe carriers 28 provided with pivots 29. The apparatus comprises, for each of the opposed guide shoes an arm 7 which extends, outside the stand, parallel to the rolling axis and is provided in an intermediate position with a support within which is located the pivot 29 for the guide-shoe carrier. The arm 7 has one end hinged 11 to a supporting member 9 of the stand 4, and the other end connected to an adjustable support member 15, 16. <IMAGE>
Description
SPECIFICATION
Apparatus for supporting the fixed and rotating guide shoes in a piercing or elongating rolling mill
The present invention relates to apparatus for supporting both fixed and rotating guide shoes in a piercing or elongating rolling mill.
As is known, the guide-shoes are opposed members intended to retain a steel billet in position in correspondence with the rolls of the rolling mill.
They are constituted by a member, forming the guide shoes itself, in contact with the billet, and a support member, called the guide shoes carrier, connected through a suitable support structure to the rolling stand.
In accordance with the known art, the guide shoes are of a fixed or rotary type. In those of the fixed type, each guide shoe itself is constituted by a straight element maintained in sliding contact with the billet, parallel to the rolling axis defined by the rolls, and supported by one end of the corresponding guide-shoe carrier which is shaped in the form of an arm. This latter is provided with a pivot by means of which it is fixed to the support structure so as to be able to move angularly both for adjustment of its position relative to the rolling axis and for its removal from the stand for replacement of a worn guide-shoe.
With the rotary types, however, the guide shoe itself is constituted by a circular ring mounted on the periphery of a disc-shaped guide-shoe carrier provided with a central pivot by means of which it is mounted on the support structure. In the case of a
rotating guide shoe contact with a billet does not occur by sliding but mainly by rolling, the guide shoe carrier being rotated continuously by appropriate drive means acting on its pivot.
In accordance with the known art, the support structures for the guide-shoe carriers, and hence for the guide shoes, of the fixed type are different from those for the guide-shoe carriers, and hence the guide shoes, of the rotary type with the consequence that it is not possible, for a given rolling mill, to change quickly from one type of guide shoes to the other, it being necessary for this purpose to make substantial and extensive modifications to the structures themselves.
The problem underlying the present invention is therefore that of providing apparatus which allows both fixed-type guide shoes and rotary-type guide shoes to be supported equally well without the need to modify the support structures fixed to the rolling stand whereby to enable the replacement of one type by the other rapidly when necessary or convenientfora rolling operation.
This problem is solved in accordance with the invention by apparatus which includes, for each of the opposed guide shoes an arm structure which extends parallel to the rolling axis outside the stand and is provided in an intermediate position with a support within which is seated the said pivot for the guide-shoe carriers, the arm being connected at one end to a support member of the stand by means of a pivot structure with an axis of rotation perpendicular to the rolling axis, and at the other end to an adjustable support member.
The invention will now be more fully described with reference to a preferred embodiment, illustrated by way of non-limiting example in the appended drawings, in which:
Figure 1 is a side view of the apparatus according to the invention on which fixed guide shoes are mounted;
Figure 2 is a plan view of the apparatus of Figure 1;
Figure 3 is a schematic transverse sectional view taken on line Ill-Ill of Figure 2;
Figure 4 is a side view of the apparatus according to the invention on which rotary type guide shoes are mounted;
Figure 5 is a plan view of the apparatus of Figure 4;
Figure 6is a schematic transverse sectional view taken on line VI-VI of Figure 5.
With reference to the appended drawings, a rolling mill generally indicated 1 which may equally be a piercing or elongating mill, includes two superimposed rolls 2 and 3 rotatably mounted within a stand 4. The rolls 2 and 3 define between them a horizontal rolling axis indicated X-X along which passes a billet 5 intended to be pierced or elongated as necessary.
On opposite sides of the stand 4 the mill 1 includes two pieces of apparatus according to the present invention, which are both indicated 6 and are located opposite each other.
Each of the apparatus 6 includes an arm structure 7 which extends parallel to the rolling axis X-X outside the stand 4.
The arm structure 7 is connected at one end 8 to a support member 9 of the stand 4 by means of a pivot structure 10 having a pivot pin 11 with an axis of rotation perpendicular to the rolling axis X-X, and, at its opposite end 12 to an adjustable support member 13 fixed to a support member 14 of the stand and including a mechanical jack 15 of known type driven by a geared motor 16.
A hydraulic cylinder for rotating the arm 7 about the pivot structure 10 is indicated 33.
The arm structure 7 is constituted by a pair of spaced beams 17 and 18 parallel to each other and centrally provided with respective lugs 19 and 20 which extend towards the rolling axis X-X. The lugs 19 and 20 together form a support 21 for supporting a respective guide shoe. An opposing guide shoe is supported by an opposing support 21 belonging to the opposing device 6.
These guide shoes which may be of the fixed type as illustrated in Figures 1,2 and 3, where they are indicated 22, or of the rotary type, as illustrated in
Figures 4, 5 and 6, where they are indicated 23, retain the billet 5 in correspondence with the rolls 2 and 3 along the rolling axis X-X.
In particular (see Figures 4, 5 and 6) each rotating guide shoe 23 is mounted on a respective guideshoe carrier 24 provided with a pivot 25 which is housed in a pivot seat 26 formed in the support 21 and is rotatable in this seat.
Reference 27 indicates drive members for rotating the guide-shoe carrier 24 and hence the guide shoe 23, these drive members being mounted on the arm structure 7 in correspondence with the free end of the lug 19 of the beams 17.
With reference to Figures 1,2 and 3, in which the rolling mill 1 is provided with fixed guide shoes, each fixed guide shoe 22 is mounted on a guideshoe carrier 28 which is provided with a pivot 29 located in the pivot seat 26 of the support 21.
References 30 and 31 respectively indicate a mechanical jack, driven via a gear box of known type, and a cylinder, the operative ends of the jack and cylinder engaging part of the guide-shoe carrier 28; the jack 30 and the cylinder 31 respectively constitute members for adjusting the angular position and for locking the guide-shoe carrier itself.
Advantageously, a second fixed guide shoe 32 is mounted on the guide-shoe carrier 28 in a position diametricaily opposite the first guide shoe 22 relative to the pivot 29; the guide-shoe carrier 28 may be angularly displaced by the drive members 27 to bring the second guide shoe into the position of the first member.
With the guide-shoe support apparatus of the invention, the replacement of the fixed guide shoes by the rotating members or vice versa is carried out as described below. For this purpose it is sufficient to free the end 12 of the arm structure 7 from the support member 13, to rotate the arm structure 7 about the pivot 10 thereby removing the guide shoe from the stand, and then to remove the existing guide-shoe carrier from the support 21, replacing it by the desired one. Finally the arm structure 7 is brought back into its initial position and its position is adjusted by means of the support member 13.
In the case of fixed guide shoes, the position of these may also, advantageously, be adjusted in a direction substantially parallel to the rolling axis, the angular position of the guide-shoe carrier 28 being varied about its pivot 29 by means of the mechanical jack 30 and its opposing cylinder 31.
The main advantage achieved by the apparatus according to the invention is that it makes possible the rapid replacement of fixed guide shoes by
rotating members and vice versa without any structural modification to the rolling mill.
Afurther advantage lies in the fact that the adjustment of both the fixed and rotating guide shoes to bring them closer to, or distance them from, the rolling axis can be carried out with great
precision and rapidity.
Finally, in the case of fixed guide shoes the
possibility is also afforded of effecting rapid and accurate adjustment in a direction substantially
parallel to the rolling axis.
Obviously numerous variations and modifications
may be made to the apparatus described above by
an expert in the art, in accordance with specific
requirements, all of which are contained within the
scope of protection of the present invention as
defined by the following claims.
Claims (7)
1. Apparatus for supporting the opposing guide
shoes, both fixed and rotary, in a piercing or elongating rolling mill with superimposed rolls rotatably mounted within a stand and defining between them a horizontal rolling axis, the guide shoes being mounted on respective guide-shoe carriers provided with pivots, characterised in that it comprises, for each of the opposing guide shoes, an arm structure which extends parallel to the rolling axis, outside the stand, and is provided in an intermediate position with a support within which is located the pivot of the guide-shoe carrier, the arm being connected at one end to a support member of the stand by means of a pivot structure with an axis of rotation perpendicular to the rolling axis and at the other end to an adjustable support member.
2. Apparatus according to Claim 1, characterised in that the arm structure is constituted by a pair of beams which are parallel to each other and spaced apart, the support for the pivot of the guide-shoe carrier being formed on a lug which is formed centrally on each of the said beams and extends towards the rolling axis.
3. Apparatus according to Claims 1 and 2, characterised in that the adjustable support to which one end of the arm structure is connected, comprises a mechanical jack of a type known per se driven by a geared motor fixed to a supporting member of the stand.
4. Apparatus according to Claims 1 to 3, characterised in that the arm structure is provided at each end with adjusting and locking members the operative ends of which engage a part of the corresponding guide-shoe carrier for a fixed guide shoe.
5. Apparatus according to Claims 1 to 4, characterised in that the arm structure has drive members for angularly displacing the guide-shoe carrier of a fixed guide shoe or for rotating the guide-shoe carrier of a rotating guide shoe, the drive members being disposed in correspondence with the free end of the lug of one of the component beams of the arm structure.
6. Apparatus substantially as hereinbefore described with reference to, and as shown in, the accompanying drawings.
7. A mill including apparatus as claimed in any of the preceding claims.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT22529/82A IT1152438B (en) | 1982-07-22 | 1982-07-22 | DEVICE FOR THE SUPPORT OF FIXED AND ROTATING LINES IN PERFORATING OR EXTENDING ROLLS |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8317473D0 GB8317473D0 (en) | 1983-08-03 |
GB2124950A true GB2124950A (en) | 1984-02-29 |
GB2124950B GB2124950B (en) | 1985-12-11 |
Family
ID=11197470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08317473A Expired GB2124950B (en) | 1982-07-22 | 1983-06-28 | Apparatus for supporting the fixed and rotating guide shoes in a piercing or elongating rolling mill |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5935815A (en) |
DE (1) | DE3326263A1 (en) |
FR (1) | FR2530505B1 (en) |
GB (1) | GB2124950B (en) |
IT (1) | IT1152438B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AR103659A1 (en) | 2015-02-11 | 2017-05-24 | Danieli Off Mecc | ROLLED CAGE FOR WELD-FREE TUBES OF TRANSVERSAL LAMINATION WITH INTERCHANGEABLE SIDE GUIDE DEVICE |
DE102021200391A1 (en) | 2021-01-18 | 2022-07-21 | Sms Group Gmbh | Rolling stand with variable lateral guide device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1308822A (en) * | 1960-12-07 | 1962-11-09 | Blaw Knox Co | Mandrel Wedge Device for Seamless Tube Making Machine |
JPS5334587B2 (en) * | 1973-12-05 | 1978-09-21 |
-
1982
- 1982-07-22 IT IT22529/82A patent/IT1152438B/en active
-
1983
- 1983-06-28 GB GB08317473A patent/GB2124950B/en not_active Expired
- 1983-07-21 FR FR8312085A patent/FR2530505B1/en not_active Expired
- 1983-07-21 JP JP58133572A patent/JPS5935815A/en active Pending
- 1983-07-21 DE DE19833326263 patent/DE3326263A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
GB8317473D0 (en) | 1983-08-03 |
FR2530505A1 (en) | 1984-01-27 |
JPS5935815A (en) | 1984-02-27 |
IT8222529A0 (en) | 1982-07-22 |
DE3326263A1 (en) | 1984-01-26 |
IT1152438B (en) | 1986-12-31 |
FR2530505B1 (en) | 1987-07-03 |
GB2124950B (en) | 1985-12-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0610650B1 (en) | Journal-less rotary dies and stand | |
US5058325A (en) | Machine for the abrasive machining of cylindrical journals on components, in particular for machining journals and crank pins on crankshafts using abrasive material | |
US4787232A (en) | Roll forming member and/or a roll former | |
JPS60234704A (en) | Roll rest | |
US4896837A (en) | Roller mill | |
US4156453A (en) | Driving roll stand | |
US4015497A (en) | Cable stripping machines with linked cutting and driving wheels | |
US3971594A (en) | Apparatus for milling road surfaces | |
GB2124950A (en) | Apparatus for supporting the fixed and rotating guide shoes in a piercing or elongating rolling mill | |
US3643537A (en) | Continuously rotating shears | |
US4387584A (en) | Steel pipe rolling mill | |
US4089197A (en) | Machine for flattening sheet metal | |
US3603190A (en) | Rotary plate-slitting shear | |
US5479805A (en) | Two-high cross rolling mill with guide disks | |
US4107970A (en) | Machine for flattening strip metal | |
GB2124949A (en) | Apparatus for supporting opposing guide-shoes in a piercing or elongating rolling mill | |
EP0075448A2 (en) | Double bladed shear | |
US4236279A (en) | Planetary coiler | |
CA1048819A (en) | Continuous casting plant strand guiding means | |
SU1054010A1 (en) | Rest of a lathe | |
GB1570064A (en) | Bending machine | |
SU412998A1 (en) | DEVICE TO DISK SCISSORS1 FOR SETTING KNIVES FOR SHAFTS | |
SU782861A1 (en) | Roller-type flattener for grain | |
US4922740A (en) | Rolling unit supported as a cantilever | |
SU1015962A1 (en) | Sheet bending apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |