US3398489A - Roll grinding machine - Google Patents

Roll grinding machine Download PDF

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Publication number
US3398489A
US3398489A US524736A US52473666A US3398489A US 3398489 A US3398489 A US 3398489A US 524736 A US524736 A US 524736A US 52473666 A US52473666 A US 52473666A US 3398489 A US3398489 A US 3398489A
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Prior art keywords
roll
carriage
grinding machine
base
cam
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Expired - Lifetime
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US524736A
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Edwin H Rohrer
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Priority to US524736A priority Critical patent/US3398489A/en
Priority to GB27657/68A priority patent/GB1176432A/en
Priority to DE19681752725 priority patent/DE1752725B1/en
Priority to FR163719A priority patent/FR1577708A/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/16—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged
    • B24B5/167—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged for rolls with large curvature radius, e.g. mill rolls

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  • FIG 2 EDWIN H. ROHRER ATTC'RNEY I g- 9
  • a roll grinding machine for radial type crowning in which the grinder pivots as well as in-feeds so that the grinding surface is tangent to the roll face being ground at all times.
  • This invention relates to a cylindrical grinding machine and more particularly to a grinding machine for contouring rubber covered rolls.
  • the principal object of the invention is the provision of'a roll grinding machine capable of variable roll contouring.
  • a further object of the invention is the provision of a roll grinding machine for radial type crowning in which the grinder pivots as well as in-feeds so as to be tangent to the roll face at all times.
  • a still further object of the invention is the provision of a roll grinding machine wherein the degree of crown on the roll being groundmay be varied from a flat to a maximum curve by simple manual adjustment of the machine.
  • the roll grinding machine disclosed herein comprises a variable roll contouring device which is actually a device for moving a grinding wheel or wheels in an arcuate path transversely of a roll to be ground and in particular a roll having arubber cylindrical sleeve thereon as known in the art.
  • the grinding wheels In order to form an even crown, the grinding wheels must be traversed longitudinally of the roll while the roll is being rotated and the grinding wheels must change their position relative to the face of the roll being ground so as to continuously match the crown shape thereof.
  • FIGURE 2 is an enlarged horizontal section on line 22 of FIGURE 1.
  • FIGURE 3 is a diagrammatic top plan view as indicated by the lines 3-3 on FIGURE 1.
  • FIGURE 4 is a diagrammatic top plan view similar to FIGURE 3 and illustrating an exaggerated crown on a roll being ground and alternate positions of the grinding wheels and the apparatus for adjusting the same relative to the roll surface.
  • the roll grinding machine comprises a main base supporting a carriage base 11.
  • the carriage base 11 includes spaced longitudinally extending parallel ways 12 on which a carriage 13 is mounted on anti-friction devices engaging the ways 12 as will be understood by those skilled in the art.
  • the carriage 13 carries a relatively movable head 14 which in turn supports a grinding device such as abrasive wheels 15 rotatably mounted on a shaft 16 and driven by a gear box 17 which is powered by an attached electric motor 18.
  • contour controlling bar 25 Positioned alongside the traversing screw 24, there is a contour controlling bar 25 which is slidably positioned relative to a pair of supporting slide pieces 26 which are positioned on the carriage base 11 between the ways 12.
  • the bar 25 is pivoted midway between its ends to the carriage base 11 as best seen in FIGURES 3 and 4 of the drawings and provided at one of its ends with a depending threaded aperture which is engaged on a transversely positioned screw 27 which may be rotated by hand wheel 28 on the carriage base 11.
  • the head 14 which carries the grinding Wheels 15 as hereinbefore described is pivotally mounted on the carriage 13 and includes oppositely disposed sidewardly extending arms 29 and 30' which in turn have rollers 29A and 30A mounted thereon and arranged to engage cams 31 and 32 which are each pivoted to the carriage 13 and interconnected by a link 33 as best illustrated in FIG- URES 3 and 4 of the drawings.
  • the cam 31 has a sidewardly extending arm 34 keyed to the pivot shaft by which the cam 31 is pivoted to the carriage 13 and the outer end of the arm 34 is pivotally engaged on a bracket 35 which in turn has secondary rollers 36 on its opposite ends engaging the opposite sides of the bar 25 heretofore referred to.
  • FIGURE 3 the head 14 which supports the grinding wheels is positioned midway between the ends of the roll 19 and the broken line representations of the grinding wheels 15 are perpendicular relative to the axis of the roll 19.
  • the earns 31 and 32 are engaging the rollers 29A- and 30A respectively and so that the configuration of each of the earns 31 and 32 is the same and the spacing effect resulting between the carriage 13 to which the cams 31 and 32 are pivoted and the rollers 29A and 30A is equal.
  • the head 14 is accordingly perpendicular to the axis of the roll 19.
  • the shape of the earns 31 and 32 and the fact that they are oppositely disposed with respect to one another is important and necessary and that the principal point of novelty in the disclosure is the arrangement of the cams 31 and 32 and their relative engagement with the rollers 29A and 30A on the ends of the arms 29 and 30 of the rotatable head 14 on which the grinding wheels 15 are located.
  • a roll grinding machine comprising a base, a grinding device and a rotatable work support which are movable relative to each other, a longitudinally movable carriage, a horizontally disposed pivotally mounted support on said carriage for supporting said grinding device for turning movement in a horizontal plane, means to impart turning motion to said pivotally mounted support to cause said pivotally mounted support and said grinding device thereon to turn relative to said carriage when said carriage is moved longitudinally of said rotatable work support and base, said means including at least one cam rotatably mounted on said carriage, a cam follower oris'aid'pivotally mounted support engaging said cam and means for moving said cam relative to said carriage when said carriage moves longitudinally of said work support and base.
  • said means for moving said cam comprises an elongated bar pivoted midway between its ends to said base so as to be movable to various angles with respect to said base and means movably engaging said bar and connected to said cam and arranged to impart rotary motion to said cam relative to the angle of said bar on said base when said carriage moves longitudinally of said base.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Description

Aug. 27, 1968 ROHRER 3,398,489
I ROLL GRINDING MACHINE Filed Feb; 1966 2 Sheets-Sheet l INV'ENTOR.
FIG 2 EDWIN H. ROHRER ATTC'RNEY I g- 9 E. H. ROHRER ROLL GRINDING MACHINE 2 Sheets-Sheet 2 Filed Feb. 5, 1966 INVENTOR. EDWIN H. ROHRER 520 o ow BY WQ ATTORNEY United States Patent 01 hce 3,398,489 Patented Aug. 27, 1968 ABSTRACT OF THE DISCLOSURE A roll grinding machine for radial type crowning in which the grinder pivots as well as in-feeds so that the grinding surface is tangent to the roll face being ground at all times.
This invention relates to a cylindrical grinding machine and more particularly to a grinding machine for contouring rubber covered rolls.
The principal object of the invention is the provision of'a roll grinding machine capable of variable roll contouring.
A further object of the invention is the provision of a roll grinding machine for radial type crowning in which the grinder pivots as well as in-feeds so as to be tangent to the roll face at all times.
Afurther object of the invention is the provision of a roll grinding machine comprising a variable cam actuated device wherein the cams are readily replaceable to change to a parabolic shape and an hour glass shape.
A still further object of the invention is the provision of a roll grinding machine wherein the degree of crown on the roll being groundmay be varied from a flat to a maximum curve by simple manual adjustment of the machine.
The roll grinding machine disclosed herein comprises a variable roll contouring device which is actually a device for moving a grinding wheel or wheels in an arcuate path transversely of a roll to be ground and in particular a roll having arubber cylindrical sleeve thereon as known in the art. In order to form an even crown, the grinding wheels must be traversed longitudinally of the roll while the roll is being rotated and the grinding wheels must change their position relative to the face of the roll being ground so as to continuously match the crown shape thereof.
With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination arrangement of parts and in the details of construction hereinafter described and claimed, it being the intention to cover all changes and modifications of the example of the invention herein chosen for purposes of the disclosure, which do not constitute departures from the spirit and scope of the invention.
The invention is illustrated in the accompanying drawing, wherein:
FIGURE 1 is a perspective view of the roll grinding machine.
FIGURE 2 is an enlarged horizontal section on line 22 of FIGURE 1.
FIGURE 3 is a diagrammatic top plan view as indicated by the lines 3-3 on FIGURE 1.
FIGURE 4 is a diagrammatic top plan view similar to FIGURE 3 and illustrating an exaggerated crown on a roll being ground and alternate positions of the grinding wheels and the apparatus for adjusting the same relative to the roll surface.
By referring to the drawings and FIGURES 1 and 2 in particular, it will be seen that the roll grinding machine comprises a main base supporting a carriage base 11. The carriage base 11 includes spaced longitudinally extending parallel ways 12 on which a carriage 13 is mounted on anti-friction devices engaging the ways 12 as will be understood by those skilled in the art. The carriage 13 carries a relatively movable head 14 which in turn supports a grinding device such as abrasive wheels 15 rotatably mounted on a shaft 16 and driven by a gear box 17 which is powered by an attached electric motor 18.
In FIGURES 1 and 2 of the drawings a roll 19, of a cylindrical construction, is illustrated and is provided with a rubber sleeve 20. The roll 19 is rotatably supported by a head stock 21 and tail stock 22, the latter comprising a commercial live center type. The head stock 21 and tail stock 22 are supported on a subbase 23 which in turn is slidably mounted on the main base 10 to adjust for roll diameter and grind depth. Means for rotating the roll 19 comprises a hydraulic motor built into the head stock 21 arranged to drive a conventional face plate as will he understood by those skilled in the art.
By referring again to the carriage base 11 it will be observed that there is a longitudinally extending traversing screw 24 journalled at its opposite ends in brackets on the carriage base 11 and threadably engaging appropriate configurations in depending portions of the carriage 13 so that revolving motion imparted the traversing screw 24 will cause the carriage 13 to move longitudinally of the ways 12 on the carriage base 11.
Positioned alongside the traversing screw 24, there is a contour controlling bar 25 which is slidably positioned relative to a pair of supporting slide pieces 26 which are positioned on the carriage base 11 between the ways 12. The bar 25 is pivoted midway between its ends to the carriage base 11 as best seen in FIGURES 3 and 4 of the drawings and provided at one of its ends with a depending threaded aperture which is engaged on a transversely positioned screw 27 which may be rotated by hand wheel 28 on the carriage base 11.
The head 14 which carries the grinding Wheels 15 as hereinbefore described is pivotally mounted on the carriage 13 and includes oppositely disposed sidewardly extending arms 29 and 30' which in turn have rollers 29A and 30A mounted thereon and arranged to engage cams 31 and 32 which are each pivoted to the carriage 13 and interconnected by a link 33 as best illustrated in FIG- URES 3 and 4 of the drawings. The cam 31 has a sidewardly extending arm 34 keyed to the pivot shaft by which the cam 31 is pivoted to the carriage 13 and the outer end of the arm 34 is pivotally engaged on a bracket 35 which in turn has secondary rollers 36 on its opposite ends engaging the opposite sides of the bar 25 heretofore referred to.
By referring now to the diagrammatic FIGURES 3 and 4 of the drawings it will be seen that in FIGURE 3 the head 14 which supports the grinding wheels is positioned midway between the ends of the roll 19 and the broken line representations of the grinding wheels 15 are perpendicular relative to the axis of the roll 19. The earns 31 and 32 are engaging the rollers 29A- and 30A respectively and so that the configuration of each of the earns 31 and 32 is the same and the spacing effect resulting between the carriage 13 to which the cams 31 and 32 are pivoted and the rollers 29A and 30A is equal. The head 14 is accordingly perpendicular to the axis of the roll 19. At such time as the carriage 13 carrying the head 14 which in turn carries the grinding wheels 15 moves to the right as illustrated in FIGURE 4 in solid lines, the predetermined angular position of the bar 25 will cause the bracket 35 and the rollers 36 thereon which are following the same to tilt the earns 31 and 32 by motion imparted through the arm 34. It will thus be seen that when the carriage 13 moves to the right as in solid lines in FIGURE 4 of the drawings the changing positions of the cams 31 and 32 result in the changed position of the head 14 and it will be seen that this continues progressively as the traversing action of the carriage 13 continues. i
By referring now to the broken line illustration to the left of FIGURE 4 of the drawings, it will be seen that when the carriage 13 moves to the left of the center of the roll 19 the relatively increased space between the angularly disposed bar 25 and the cams 31 and 32 on the carriage 13 results in the bracket 35 moving the arm 34 to tilt the cams 31 and 32 in a manner opposite to that heretofore described. This opposite tilting motion turns the head 14 in a direction opposite to that heretofore described and as a result acts to maintain the grinding wheels tangent to the roll face as the traversing action of the carriage 13 continues.
It will thus be seen that the degree of crown imparted to the roll 19 depends upon the relative position of the bar 25 and that depending on the position of the bar 25 the roll can be ground flat or to any desired crown and that the same may be readily varied by manually turning the hand wheel 28 which in turn controls the screw 27 positioning the bar 25 relative to the axis of the roll.
It will further be seen that the shape of the earns 31 and 32 and the fact that they are oppositely disposed with respect to one another is important and necessary and that the principal point of novelty in the disclosure is the arrangement of the cams 31 and 32 and their relative engagement with the rollers 29A and 30A on the ends of the arms 29 and 30 of the rotatable head 14 on which the grinding wheels 15 are located.
It will thus be seen that a variable cam-actuated device for a radial type crowning in which the grinder pivots as well as in-feeds so as to be tangent to the roll base at all times has been disclosed and having thus described my invention, what I claim is:
1. A roll grinding machine comprising a base, a grinding device and a rotatable work support which are movable relative to each other, a longitudinally movable carriage, a horizontally disposed pivotally mounted support on said carriage for supporting said grinding device for turning movement in a horizontal plane, means to impart turning motion to said pivotally mounted support to cause said pivotally mounted support and said grinding device thereon to turn relative to said carriage when said carriage is moved longitudinally of said rotatable work support and base, said means including at least one cam rotatably mounted on said carriage, a cam follower oris'aid'pivotally mounted support engaging said cam and means for moving said cam relative to said carriage when said carriage moves longitudinally of said work support and base.
2. The roll grindingmachine set forth in claim 1 and wherein said means for moving said cam-comprises an elongated bar positioned longitudinally of said work support and base and means movably engaging said bar and connected with said cam.
3. The roll grinding machine set forth in claim 1 and wherein said cam is rotated in timed relation with said longitudinal movement'of said carriage. i
- 4. The roll grinding machine set forth in claim 1 and wherein said means for moving said cam comprises an elongated bar pivoted midway between its ends to said base so as to be movable to various angles with respect to said base and means movably engaging said bar and connected to said cam and arranged to impart rotary motion to said cam relative to the angle of said bar on said base when said carriage moves longitudinally of said base.
5. The roll grinding machine set forth in claim 1 and wherein there are two cams rotatably mounted on said carriage in spaced relation to one another, means interconnecting said cams, and wherein there are two cam followers on oppositely disposed arms on said pivotally mounted support engaging said cams.
6. The roll grinding machine set forth in claim 1 and wherein said rotatable work support is arranged to support a crowned rubber covered roll in spaced parallel relation to said longitudinally movable carriage and wherein said grinding device and pivotally mounted support therefor are arranged to maintain tangential relation between said grinding wheel and said crowned roll.
References Cited UNITED STATES PATENTS Bowen 51-42 a LESTER M. SWINGLE, Primary Examiner.
US524736A 1966-02-03 1966-02-03 Roll grinding machine Expired - Lifetime US3398489A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US524736A US3398489A (en) 1966-02-03 1966-02-03 Roll grinding machine
GB27657/68A GB1176432A (en) 1966-02-03 1968-06-11 Roll Grinding Machine
DE19681752725 DE1752725B1 (en) 1966-02-03 1968-07-05 Control device for the grinding spindle support of a roll grinder for grinding convex or concave roll shapes
FR163719A FR1577708A (en) 1966-02-03 1968-08-21

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US524736A US3398489A (en) 1966-02-03 1966-02-03 Roll grinding machine
GB27657/68A GB1176432A (en) 1966-02-03 1968-06-11 Roll Grinding Machine
DE19681752725 DE1752725B1 (en) 1966-02-03 1968-07-05 Control device for the grinding spindle support of a roll grinder for grinding convex or concave roll shapes
FR163719A FR1577708A (en) 1966-02-03 1968-08-21

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014227A (en) * 1976-03-19 1977-03-29 Beloit Corporation Wire guided roll crowning attachment for lathes
US4218850A (en) * 1977-09-26 1980-08-26 Toshiba Kikai Kabushiki Kaisha Cambering devices of roll grinding lathes
US4291505A (en) * 1978-10-02 1981-09-29 Canon Kabushiki Kaisha Process for producing negative-crowned roller
US4767438A (en) * 1987-12-23 1988-08-30 Mroczek, Inc. Apparatus for cleaning material transporting rollers
US4766703A (en) * 1986-04-04 1988-08-30 Giustina International S.P.A. Adjustable support rest for a cylinder grinding machines or the like
CN103358196A (en) * 2012-03-30 2013-10-23 昆山诺丹舜蒲胶辊有限公司 Curve grinder
CN116587085A (en) * 2023-07-17 2023-08-15 江苏润孚机械轧辊制造有限公司 Roller double-wheel numerical control grinding machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE446395B (en) * 1981-06-18 1986-09-08 Rigello Pak Ab SET TO MAKE A PACKAGING OF PLASTIC MATERIAL
GB0617270D0 (en) * 2006-09-02 2006-10-11 Cinetic Landis Grinding Ltd Grinding machines and methods of operation thereof
CN102756308A (en) * 2012-06-29 2012-10-31 重庆恒博机械制造有限公司 Grinding machine for slender shaft workpieces
CN111496592B (en) * 2020-05-21 2021-12-03 中业纳米科技(烟台)有限公司 Finishing system for manufacturing polyurethane heat-insulating layer of pipeline

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US780972A (en) * 1904-04-28 1905-01-31 Farrel Foundry & Machine Company Grinding-machine.
US1794271A (en) * 1928-02-29 1931-02-24 Churchill Machine Tool Co Ltd Grinding machine
US1871002A (en) * 1928-09-25 1932-08-09 Farrel Birmingham Co Inc Roll grinder
US1921714A (en) * 1929-12-09 1933-08-08 Aluminum Co Of America Grinding machine
US2167948A (en) * 1938-04-25 1939-08-01 Cincinnati Grinders Inc Cambering mechanism for grinding machines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB687148A (en) * 1949-12-21 1953-02-11 Karel Saxl Improvements in and relating to machines for grinding rolls
FR1510692A (en) * 1966-02-09 1968-01-19 Waldrich Gmbh H A Machine for grinding smooth rolls with curved generators

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US780972A (en) * 1904-04-28 1905-01-31 Farrel Foundry & Machine Company Grinding-machine.
US1794271A (en) * 1928-02-29 1931-02-24 Churchill Machine Tool Co Ltd Grinding machine
US1871002A (en) * 1928-09-25 1932-08-09 Farrel Birmingham Co Inc Roll grinder
US1921714A (en) * 1929-12-09 1933-08-08 Aluminum Co Of America Grinding machine
US2167948A (en) * 1938-04-25 1939-08-01 Cincinnati Grinders Inc Cambering mechanism for grinding machines

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014227A (en) * 1976-03-19 1977-03-29 Beloit Corporation Wire guided roll crowning attachment for lathes
US4218850A (en) * 1977-09-26 1980-08-26 Toshiba Kikai Kabushiki Kaisha Cambering devices of roll grinding lathes
US4291505A (en) * 1978-10-02 1981-09-29 Canon Kabushiki Kaisha Process for producing negative-crowned roller
US4766703A (en) * 1986-04-04 1988-08-30 Giustina International S.P.A. Adjustable support rest for a cylinder grinding machines or the like
US4767438A (en) * 1987-12-23 1988-08-30 Mroczek, Inc. Apparatus for cleaning material transporting rollers
CN103358196A (en) * 2012-03-30 2013-10-23 昆山诺丹舜蒲胶辊有限公司 Curve grinder
CN103358196B (en) * 2012-03-30 2016-02-17 昆山诺丹舜蒲胶辊有限公司 Profile grinder
CN116587085A (en) * 2023-07-17 2023-08-15 江苏润孚机械轧辊制造有限公司 Roller double-wheel numerical control grinding machine
CN116587085B (en) * 2023-07-17 2023-09-15 江苏润孚机械轧辊制造有限公司 Roller double-wheel numerical control grinding machine

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DE1752725B1 (en) 1972-05-04
FR1577708A (en) 1969-08-08
GB1176432A (en) 1970-01-01

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