CA1047287A - Apparatus for supporting bearing chocks in a rolling mill - Google Patents
Apparatus for supporting bearing chocks in a rolling millInfo
- Publication number
- CA1047287A CA1047287A CA273,095A CA273095A CA1047287A CA 1047287 A CA1047287 A CA 1047287A CA 273095 A CA273095 A CA 273095A CA 1047287 A CA1047287 A CA 1047287A
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- CA
- Canada
- Prior art keywords
- chocks
- bearing
- rolling
- layers
- roll
- 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
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Abstract
ABSTRACT OF THE DISCLOSURE
An apparatus as disclosed for use in a rolling mill to support the bearing chocks of a work roll in a roll housing.
The apparatus includes specially designed components interposed between the bearing chocks and the restraining devices employed to oppose the axial forces developed during a rolling operation.
The aforesaid components offer minimum resistance to movement of the bearing chocks through minute distances in the direction of rolling. The apparatus of the present invention makes it possible to measure tension in the product being rolled by employing sensing devices acting on the bearing chocks.
An apparatus as disclosed for use in a rolling mill to support the bearing chocks of a work roll in a roll housing.
The apparatus includes specially designed components interposed between the bearing chocks and the restraining devices employed to oppose the axial forces developed during a rolling operation.
The aforesaid components offer minimum resistance to movement of the bearing chocks through minute distances in the direction of rolling. The apparatus of the present invention makes it possible to measure tension in the product being rolled by employing sensing devices acting on the bearing chocks.
Description
10~7287 .
BACKGROUND OF THE INVENTION
This invention relates generally to rolling mills, and in particular to an improved means for supporting the bearing chocks of a work roll in a roll housing.
During a rolling operation, particularly where grooved work rolls are employed to roll shaped products such ; as rounds, angles or the like, the rolls are subjected to axial forces. The axial forces tend to shift the rolls axially. -If product tolerances are to be maintained, the bearing chocks must be supported or restrained in a manner which effectively opposes such axial forces.
~` The traditional means which have heretofore been , ; employed to restrain bearing chocks are, however, somewhat , inconsistent with certain requirements of modern rolling mill ", design and operation. For example, recent developments in ; systems for measuring product tension in a continuous multi-" stand mill require that at least one of the work rolls of the cooperating roll pair, and its respective bearing chocks be ' capable of substantially free movement through minute distances on the order of several thousandths of an inch i~n the direction ,~,, ~ of rolling. In such systems, sensing devices act on the . .~
bearing chocks of the said one roll to monitor product tension.
;~ However, conventional restraining means impose a variable frictional load on the bearing chocks in the direction of rolling and this frictional load can be high enough to compromise the sensitivity and accuracy of the aforesaid sensing devices.
SU~ RY OF THE INVENTION
:`:
.:
- A primary object of the present invention is to over-co~e the above-stated disadvantage by interposing specially designed components between the bearing chocks of a work roll '`', . . .
~0~7287 and the restraining means associated therewith. These speeially desi~ned components permit the bearing chocks to move relatively freely through minute distances in the direction of rolling, without compromising the ability of the restraining ~eans to effectively oppose the axial forces to ~hich the roll ; is being subjected to during a rolling operation.
The aforesaid specially designed components include laminated bearing pads interposed between the bearing chocks - and the clamping means employed to oppose the forces tending to shift the work rolls axially.
The bearing pads have laminated sections which are made up of alternate thin layers of metal and a suitable elastomer, with the orientation of the pads being such that these layers lie in planes which are parallel to the direction of rolling and thus perpendicular to the axes of the bearing chocks. ~hese bearing pads are characterized by a high modulus of elasticity in compression, and a low modulus of elasticity in shear, i.e., in a direction parallel to the layers of the laminated section. By way of example, and for the rolling mill applications herein under consideration, such laminated bearing pads might typically have a modulus of elasticity in compression of 150,000 to 200,000 p.s.i., and a modulus of elasticity in shear of 60 to 80 p.s.i. (expressed as G =
shear stress divided by unit shear strain, where unit shear - strain is the total lateral shear strain divided by the total height of the meMber perpendicular to the shear load) which may be expressed alternatively as a lateral spring rate of approximately 3 lbs. per .001 inch. These laminated bearing pads thus have the ability to cooperate e~fectively with the clamping means emp~ayed to restrain bearing chocks against . .
BACKGROUND OF THE INVENTION
This invention relates generally to rolling mills, and in particular to an improved means for supporting the bearing chocks of a work roll in a roll housing.
During a rolling operation, particularly where grooved work rolls are employed to roll shaped products such ; as rounds, angles or the like, the rolls are subjected to axial forces. The axial forces tend to shift the rolls axially. -If product tolerances are to be maintained, the bearing chocks must be supported or restrained in a manner which effectively opposes such axial forces.
~` The traditional means which have heretofore been , ; employed to restrain bearing chocks are, however, somewhat , inconsistent with certain requirements of modern rolling mill ", design and operation. For example, recent developments in ; systems for measuring product tension in a continuous multi-" stand mill require that at least one of the work rolls of the cooperating roll pair, and its respective bearing chocks be ' capable of substantially free movement through minute distances on the order of several thousandths of an inch i~n the direction ,~,, ~ of rolling. In such systems, sensing devices act on the . .~
bearing chocks of the said one roll to monitor product tension.
;~ However, conventional restraining means impose a variable frictional load on the bearing chocks in the direction of rolling and this frictional load can be high enough to compromise the sensitivity and accuracy of the aforesaid sensing devices.
SU~ RY OF THE INVENTION
:`:
.:
- A primary object of the present invention is to over-co~e the above-stated disadvantage by interposing specially designed components between the bearing chocks of a work roll '`', . . .
~0~7287 and the restraining means associated therewith. These speeially desi~ned components permit the bearing chocks to move relatively freely through minute distances in the direction of rolling, without compromising the ability of the restraining ~eans to effectively oppose the axial forces to ~hich the roll ; is being subjected to during a rolling operation.
The aforesaid specially designed components include laminated bearing pads interposed between the bearing chocks - and the clamping means employed to oppose the forces tending to shift the work rolls axially.
The bearing pads have laminated sections which are made up of alternate thin layers of metal and a suitable elastomer, with the orientation of the pads being such that these layers lie in planes which are parallel to the direction of rolling and thus perpendicular to the axes of the bearing chocks. ~hese bearing pads are characterized by a high modulus of elasticity in compression, and a low modulus of elasticity in shear, i.e., in a direction parallel to the layers of the laminated section. By way of example, and for the rolling mill applications herein under consideration, such laminated bearing pads might typically have a modulus of elasticity in compression of 150,000 to 200,000 p.s.i., and a modulus of elasticity in shear of 60 to 80 p.s.i. (expressed as G =
shear stress divided by unit shear strain, where unit shear - strain is the total lateral shear strain divided by the total height of the meMber perpendicular to the shear load) which may be expressed alternatively as a lateral spring rate of approximately 3 lbs. per .001 inch. These laminated bearing pads thus have the ability to cooperate e~fectively with the clamping means emp~ayed to restrain bearing chocks against . .
-2-'`' ' :
, . . .
iO472~7 movement in an axial direction, even when the bearing chocks are being subjected to very high thrust forces on the order of 50,000 pounds, while at the same time allowing the bearing chocks to move with minimum resistance in the direction of rolling. ~ ~-Through the use of the laminated bearing pads, the bearing chocks are effectively restrained in a manner which permits them to move minutely in the direction of rolling without attendant frictional resistance sufficient to impair the accuracy of sensing devices acting on the bearing chocks.
BRIEF DESCRIPTION OF THE DRAWINGS
An embodiment of the invention will now be described by way of example only with reference to the accompanying drawings, wherein:
Figure 1 is a view in side elevation of a horizontal roll housing in a rolling mill, with portions broken away;
, Figure 2 is a sectional view on an enlarged scale '` taken along lines 2-2 of Figure l;
~` Figure 3 is a sectional view taken along line 3-3 of Figure 2;
- Figure 4 is a schematic illustration of a typical bearing pad in accordance with the present invention with the :.
thickness of the layers making up the laminated section exaggerated for purposes of illustration; and Figure 5 is a view similar ~o Figure 4 but with lateral distortion (again exaggerated for purpose of illustra-tion) of the laminated section of the bearing pad.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to~the drawings, there is shown in Figure 1 the work side of a typical horizontal roll housing
, . . .
iO472~7 movement in an axial direction, even when the bearing chocks are being subjected to very high thrust forces on the order of 50,000 pounds, while at the same time allowing the bearing chocks to move with minimum resistance in the direction of rolling. ~ ~-Through the use of the laminated bearing pads, the bearing chocks are effectively restrained in a manner which permits them to move minutely in the direction of rolling without attendant frictional resistance sufficient to impair the accuracy of sensing devices acting on the bearing chocks.
BRIEF DESCRIPTION OF THE DRAWINGS
An embodiment of the invention will now be described by way of example only with reference to the accompanying drawings, wherein:
Figure 1 is a view in side elevation of a horizontal roll housing in a rolling mill, with portions broken away;
, Figure 2 is a sectional view on an enlarged scale '` taken along lines 2-2 of Figure l;
~` Figure 3 is a sectional view taken along line 3-3 of Figure 2;
- Figure 4 is a schematic illustration of a typical bearing pad in accordance with the present invention with the :.
thickness of the layers making up the laminated section exaggerated for purposes of illustration; and Figure 5 is a view similar ~o Figure 4 but with lateral distortion (again exaggerated for purpose of illustra-tion) of the laminated section of the bearing pad.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to~the drawings, there is shown in Figure 1 the work side of a typical horizontal roll housing
-3-10 in a rolling mill. The housing has top and base sections 12 and 14 which together with vertlcàlly extending housing posts 16, define the housing wlndow 18. Upper and lower horizontal work rolls 20a, 20b are ~ournalled for rotation between upper and lower bearing chocks 22a, 22b. Although not shown, it will b~ understood that each roll 20a, 20b is respectively journalled between a palr of bearing chocks 22a, 22b. Where shaped products are being rolled, the work rolls are appropriately :
grooved, with mating grooves cooperating to define roll passes.
Pins 23 extend through enlarged bores 24 in the upper bearing chocks 22a and into enlarged bores 25 in the lower bearing chocks 22b. Hydraullc piston-cylinder units 26 are threaded as at 28 into the upper chocks. The units 26 act through the pins 23 to hold the upper bearing chocks 22a up against rocker assemblies 29 which are interposed between the upper bearing chocks 22a and the screws of the housing screw down mechanisms 31. The upper and lower rolls 20a, 20b and thelr respective bearing chocks 22a, 22b and intermediate pins 23 form an lnterchangeable unit commonly referred to as a "roll package"
which is carried lnto and out of the roll housing 10 through the window 18 by means of an underlying carriage assembly 32.
The construction and operation of the carriage assembly 32 is more fully described in U.S. Patent No. 3,675,456 assigned to the same assignee as that of the pres~nt invention.
.
As previously mentioned, systems are now being developed to monitor product tension by employing sensing devices associated with the bearing chocks of at least one roll o~ a given roll pa~r. In the following discussion, one such .
. ~ arrangement will be described in connection with the bearing chocks 22a of the upper work roll 20a. It will be understood, '' .:
~.
: ,.
~ -4--'.' . ,~
1047;2137 however, that the same basic arrangement could be employed if desired with the bearing chocks 22b of the lower roll 20b.
With reference additionally to the remalnlng Figs.
2-5, it will be seen that the upper bearlng chocks 22a are each provided wlth laterally extending lugs or "ears" 33. The ears 33 have oppositely facing inner and outer planar surfaces 33a, - 33b which are perpendicular to the axis "A" of the bearing chocks. The axis A i5 of course perpendicular to the mill pass line "P", which is the direction of rolling through the mill.
Clamping means generally indicated at 34 are associated with the housing posts 16 to act on ears 33 for the purpose of restraining the bearlng chocks against axlal movement.
In the embodiment being described herein for pur-poses of illustration, each clamping means 34 comprises a clamp 35 attached to one of the housing posts 16 by any convenient mean~, for example bolts 36. Specially designed bearing pads 38a, 38b are interposed between each ear 33, the clamp 35 and the housing post 16. The bearing pads each preferably include a mounting plate 40, a laminated section 42 made up Or alter-nate very thin planar layers of metal 42a and a suitable ., elastomer 42b (see Figures 4 and 5), and a nose 44 having acurved contact surface 44' which can either be spherical as shown in the drawings, or crowned in the appropriate direction.
The mounting plate 40 of bearing pad 38a is attached as by screws 46 to the planar surface 33a of ear 33, and the mountlng plate 40 of the opposite bearing pad 38b is likewise attached as by screws 46 to the opposite face 33b of ear 33. The spherical contact surfaces 44' of the noses 44 of the bearing pads 38a, 38b bear respectively against the housing post 16 and the underside 48 of the nose on clamp 35.
''"''' L~$~"
' ' :
~()47287 The laminated sections 42 of the bearing pads may be comprised of a commercially avallable materlal sold under the trade name "LAMIFLEX" by the Marlin-Rockwell Corporation of Jamestown, New York, U.S.A. The orientatlon of the bearlng pads ls such that the layers (42a, 42b) making up the lamlnated section 42 lle in planes which are perpendlcular to the axls A
of the bearlng chocks. As lndlcated prevlously, the bearlng pads 38a, 38b are characterized by a high modulus of elasticity in compression and a low modulus of elasticity in shear.
The operatlng prlncipal of the laminated sections 42 is based on the elasticity of the thin elastomer layers 42b be-tween the metal layers 42a. As shown by a comparison of Flgures 4 and 5, when a lateral force is applled to the bearlng chockæ in the plane of the layers, for example as the result -of tenslon in the product belng rolled,~each Or the elastomer layers will dlstort or stretch to accommodate lateral displace-ment of the ears 33 and attached mounting plates 40 in relation to the noses 44. The amount of compressive load applied per-pendicular to the layers has no appreciable effect on the amount of force requlred to produce the aforesald lateral move-ment. However, axial compression of the bearing pad under load is negligible because the elastomer layers 42b are relat~vely lncompressible. It will thus be seen that by emp~loying the specially designed bearlng pads 38a, 38b between the chock ears 33 and the cooperatlng clamplng means 34 and housing posts 16, the bearing chocks are effectively prevented from " .
moving axlally, and this result is achieved without impairlng ~ the abllity of the chocks to move laterally and substantially ; freely through minute distances in response to product tension in the direction of rolling. Senslng devlces generally :
.
,.
, .
'~
indicated at 60 are employed to sense forces exerted on the upper roll chocks 22a as a result of tension developed in the product being rolled. Each sensing device comprises a trans-ducer 62 mounted under a cover 64 attached to the housing posts 16. Detectlon rods 66 extend through openings 68 in the housing posts 16 with thelr ends in contact with the bearing ,- chocks at opposite sides thereof as at 70 The transducers are lnitially calibrated to a zero readlng prior to the commencement Or a rolllng operaticn. Thereafter, as rolling is lnltiated, any tension developed in the stock wlll exert a force on the bearing chocks in the direction of rolling. Thls force will be sensed by the traasducers 62, which in turn will emit signals capable of being employed ln a mill.;control 8 cheme.
It will thus be seen that broadly speaking the pre-sent lnvention ls concerned with facllltating movement of the bearing chocks of a work roll through minute distances in the direction of rolling to thereby accommodate more accurate measurement Or product tenslon by means of sensing devices acting on the bearing chocks. Thls ls accompllshed ln the preferred embodiment herein disclosed by provlding speclally designed components between the bearlng chocks and the res-trainlng means acting to oppose both axial and transverse ` forces developed during rolling. Speclal lamlnated bearing pads 38a, 38b are interposed between the chock ears 33 and ;; clamps 35 and housing posts 16 associated therewith. The bearlng pads 38a, 38b allow the bearlng chocks 22a to move minutely in the dlrection of rolllng wlth minimum frictlonal r~sistance, thereby greatly improving the accuracy Or the senslng devices 60.
.' `' 10~7287 In light of the foregoing, lt will be understood by those skilled in the art that the same concepts can be applied to the lower bearing chocks 22b of a horizontal roll stand, as well as to the chocks of any other roll stand where for exiample the rolls are vertical cr inclined at an angle.
Slmilarly, although a fixed clamping arrangement 34, 16 has been employed hereln ~or illustrative purposes, it will be understood that the invention could be incorporated into an ad~ustable clamplng arrangement which provides axial positlon ad~ustment of the bearing chocks.
It is my intentlon to cover all changes and modifications of the invention herein chosen fDr purposes of disclosure whlch do not depart from the spirit and scope of the invention. ---`:
~, ' .
~
'~
, ; .
." ,,
grooved, with mating grooves cooperating to define roll passes.
Pins 23 extend through enlarged bores 24 in the upper bearing chocks 22a and into enlarged bores 25 in the lower bearing chocks 22b. Hydraullc piston-cylinder units 26 are threaded as at 28 into the upper chocks. The units 26 act through the pins 23 to hold the upper bearing chocks 22a up against rocker assemblies 29 which are interposed between the upper bearing chocks 22a and the screws of the housing screw down mechanisms 31. The upper and lower rolls 20a, 20b and thelr respective bearing chocks 22a, 22b and intermediate pins 23 form an lnterchangeable unit commonly referred to as a "roll package"
which is carried lnto and out of the roll housing 10 through the window 18 by means of an underlying carriage assembly 32.
The construction and operation of the carriage assembly 32 is more fully described in U.S. Patent No. 3,675,456 assigned to the same assignee as that of the pres~nt invention.
.
As previously mentioned, systems are now being developed to monitor product tension by employing sensing devices associated with the bearing chocks of at least one roll o~ a given roll pa~r. In the following discussion, one such .
. ~ arrangement will be described in connection with the bearing chocks 22a of the upper work roll 20a. It will be understood, '' .:
~.
: ,.
~ -4--'.' . ,~
1047;2137 however, that the same basic arrangement could be employed if desired with the bearing chocks 22b of the lower roll 20b.
With reference additionally to the remalnlng Figs.
2-5, it will be seen that the upper bearlng chocks 22a are each provided wlth laterally extending lugs or "ears" 33. The ears 33 have oppositely facing inner and outer planar surfaces 33a, - 33b which are perpendicular to the axis "A" of the bearing chocks. The axis A i5 of course perpendicular to the mill pass line "P", which is the direction of rolling through the mill.
Clamping means generally indicated at 34 are associated with the housing posts 16 to act on ears 33 for the purpose of restraining the bearlng chocks against axlal movement.
In the embodiment being described herein for pur-poses of illustration, each clamping means 34 comprises a clamp 35 attached to one of the housing posts 16 by any convenient mean~, for example bolts 36. Specially designed bearing pads 38a, 38b are interposed between each ear 33, the clamp 35 and the housing post 16. The bearing pads each preferably include a mounting plate 40, a laminated section 42 made up Or alter-nate very thin planar layers of metal 42a and a suitable ., elastomer 42b (see Figures 4 and 5), and a nose 44 having acurved contact surface 44' which can either be spherical as shown in the drawings, or crowned in the appropriate direction.
The mounting plate 40 of bearing pad 38a is attached as by screws 46 to the planar surface 33a of ear 33, and the mountlng plate 40 of the opposite bearing pad 38b is likewise attached as by screws 46 to the opposite face 33b of ear 33. The spherical contact surfaces 44' of the noses 44 of the bearing pads 38a, 38b bear respectively against the housing post 16 and the underside 48 of the nose on clamp 35.
''"''' L~$~"
' ' :
~()47287 The laminated sections 42 of the bearing pads may be comprised of a commercially avallable materlal sold under the trade name "LAMIFLEX" by the Marlin-Rockwell Corporation of Jamestown, New York, U.S.A. The orientatlon of the bearlng pads ls such that the layers (42a, 42b) making up the lamlnated section 42 lle in planes which are perpendlcular to the axls A
of the bearlng chocks. As lndlcated prevlously, the bearlng pads 38a, 38b are characterized by a high modulus of elasticity in compression and a low modulus of elasticity in shear.
The operatlng prlncipal of the laminated sections 42 is based on the elasticity of the thin elastomer layers 42b be-tween the metal layers 42a. As shown by a comparison of Flgures 4 and 5, when a lateral force is applled to the bearlng chockæ in the plane of the layers, for example as the result -of tenslon in the product belng rolled,~each Or the elastomer layers will dlstort or stretch to accommodate lateral displace-ment of the ears 33 and attached mounting plates 40 in relation to the noses 44. The amount of compressive load applied per-pendicular to the layers has no appreciable effect on the amount of force requlred to produce the aforesald lateral move-ment. However, axial compression of the bearing pad under load is negligible because the elastomer layers 42b are relat~vely lncompressible. It will thus be seen that by emp~loying the specially designed bearlng pads 38a, 38b between the chock ears 33 and the cooperatlng clamplng means 34 and housing posts 16, the bearing chocks are effectively prevented from " .
moving axlally, and this result is achieved without impairlng ~ the abllity of the chocks to move laterally and substantially ; freely through minute distances in response to product tension in the direction of rolling. Senslng devlces generally :
.
,.
, .
'~
indicated at 60 are employed to sense forces exerted on the upper roll chocks 22a as a result of tension developed in the product being rolled. Each sensing device comprises a trans-ducer 62 mounted under a cover 64 attached to the housing posts 16. Detectlon rods 66 extend through openings 68 in the housing posts 16 with thelr ends in contact with the bearing ,- chocks at opposite sides thereof as at 70 The transducers are lnitially calibrated to a zero readlng prior to the commencement Or a rolllng operaticn. Thereafter, as rolling is lnltiated, any tension developed in the stock wlll exert a force on the bearing chocks in the direction of rolling. Thls force will be sensed by the traasducers 62, which in turn will emit signals capable of being employed ln a mill.;control 8 cheme.
It will thus be seen that broadly speaking the pre-sent lnvention ls concerned with facllltating movement of the bearing chocks of a work roll through minute distances in the direction of rolling to thereby accommodate more accurate measurement Or product tenslon by means of sensing devices acting on the bearing chocks. Thls ls accompllshed ln the preferred embodiment herein disclosed by provlding speclally designed components between the bearlng chocks and the res-trainlng means acting to oppose both axial and transverse ` forces developed during rolling. Speclal lamlnated bearing pads 38a, 38b are interposed between the chock ears 33 and ;; clamps 35 and housing posts 16 associated therewith. The bearlng pads 38a, 38b allow the bearlng chocks 22a to move minutely in the dlrection of rolllng wlth minimum frictlonal r~sistance, thereby greatly improving the accuracy Or the senslng devices 60.
.' `' 10~7287 In light of the foregoing, lt will be understood by those skilled in the art that the same concepts can be applied to the lower bearing chocks 22b of a horizontal roll stand, as well as to the chocks of any other roll stand where for exiample the rolls are vertical cr inclined at an angle.
Slmilarly, although a fixed clamping arrangement 34, 16 has been employed hereln ~or illustrative purposes, it will be understood that the invention could be incorporated into an ad~ustable clamplng arrangement which provides axial positlon ad~ustment of the bearing chocks.
It is my intentlon to cover all changes and modifications of the invention herein chosen fDr purposes of disclosure whlch do not depart from the spirit and scope of the invention. ---`:
~, ' .
~
'~
, ; .
." ,,
Claims (4)
1. In a rolling mill, the combination comprising:
a housing; a work roll journalled for rotation between bearing chocks contained in said housing; first restraining means acting on said chocks to oppose forces exerted axially on said roll during mill operation; second restraining means acting on said chocks to oppose roll separating forces exerted trans-versally on said roll during mill operation, said housing and said first and second restraining means being suitably dimensioned to accommodate movement of said chocks in the direction of rolling during mill operation; bearing pads positioned between opposed surfaces of said bearing chocks and said first restrain-ing means, each of said bearing pads having integrally joined alternating layers of metal and an elastomer lying in planes perpendicular to the chock axes, the said layers being subjected both to compression between said opposed surfaces and to shear tending to distort said elastomer layers to accommodate chock movement in the direction of rolling as tension is developed in the product being rolled.
a housing; a work roll journalled for rotation between bearing chocks contained in said housing; first restraining means acting on said chocks to oppose forces exerted axially on said roll during mill operation; second restraining means acting on said chocks to oppose roll separating forces exerted trans-versally on said roll during mill operation, said housing and said first and second restraining means being suitably dimensioned to accommodate movement of said chocks in the direction of rolling during mill operation; bearing pads positioned between opposed surfaces of said bearing chocks and said first restrain-ing means, each of said bearing pads having integrally joined alternating layers of metal and an elastomer lying in planes perpendicular to the chock axes, the said layers being subjected both to compression between said opposed surfaces and to shear tending to distort said elastomer layers to accommodate chock movement in the direction of rolling as tension is developed in the product being rolled.
2. The apparatus as claimed in claim 1 wherein said laminated sections are characterized by a high modulus of elasticity in compression in a direction perpendicular to said layers, and a low lateral spring rate in a direction parallel to said layers.
3. The apparatus in claim 2 wherein said high modulus of elasticity in compression is in the range of 150,000 to 200,000 p.s.i.
4. The apparatus as claimed in claim 3 wherein said lateral spring rate is approximately 3 lbs. per .001 inch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA273,095A CA1047287A (en) | 1977-03-03 | 1977-03-03 | Apparatus for supporting bearing chocks in a rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA273,095A CA1047287A (en) | 1977-03-03 | 1977-03-03 | Apparatus for supporting bearing chocks in a rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1047287A true CA1047287A (en) | 1979-01-30 |
Family
ID=4108066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA273,095A Expired CA1047287A (en) | 1977-03-03 | 1977-03-03 | Apparatus for supporting bearing chocks in a rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1047287A (en) |
-
1977
- 1977-03-03 CA CA273,095A patent/CA1047287A/en not_active Expired
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