US2461459A - Roll grinder and polisher - Google Patents

Description

, Feb. 8, 1949.

Filed Aug. 6, 1946 2 Sheets-Sheet l Feb. 8, 1949. w. H. WILKES ROLL GRINDER AND POLISHER 2 Sheets-Sheet? Filed Aug. 6, 1946 Patented Feb. 8 194 ROLL GRINDER AND POLISHER William Henry Wilkes, Florence, N. J., assignor to Wm. B. Thropp & Sons 00., Trenton, N. J., a corporation of New Jersey Application August 6, 1946, Serial No. 688,789

10 Claims.

This invention relates to new and useful improvements in roll grinding and polishing devices, and more particularly to devices for polishing and resurfacing rolls and like mills such as, for example, those used in numerous manufacturing and industrial processes.

In the manufacture and processing of many products the material or materials are passed be.- tween cooperating pairs of rolls suitably spaced apart and positioned to perform a particularoperation upon the materials passed therebetween.

In most cases it is essential that the surface of these rolls be maintained smooth and true, andthis requires that the rolls be ground and polished from time to time as required. Furthermore, it is desirable that this refinishing of the surface of the rolls be carried out at the place where the rolls are installed in order to save the time that otherwise would be lost to dismantling the mill and returning the rolls to the factory where made for such refinishing.

With the foregoing in mind, the principal object of the present invention is to provide a novel grinding and polishing device for rolls which is portable and may be used to refinish and resurface rolls in the field without removing the rolls or dismantling the mill in which incorporated.

Another object of the invention is to provide a :novel grinding and polishing device of the character set forth which may be readily and easily :applied to the rolls of a mill to resurface or refinish the same and then be quickly and easily removed therefrom.

Another object of the invention is to provide a grinding and polishing device of the stated type having novel features of construction and arrangement for securing and adjusting therein the abrasive members.

A further object of the invention is to provide a novel and improved grinding and polishing device of the type described embodying relatively opposedsets of abrasive members together with means for controlling contact thereof with the surfaces of the rolls.

. Still a further object of the invention is to provide a novel grinding and polishing device having the characteristics and features set forth which is of relatively simplified and inexpensive construction and highly effective and eflicient in operation and use. 7

These and other objects of the invention and the various features and details of the construction, operation and use thereof are hereinafter fully set forth and described with reference to the accompanying drawings in which:

Fig. i is an elevational view showing a rolling mill having operatively associated therewith a grinding and polishing device made according to the present invention;

Fig. 2 is an enlarged fragmentary sectional view taken on line 2-2; Fig. 1;

.Fig 3 is an enlarged sectional view taken on 1ine33, Fig. 2, and y r V Fig. 4 is an exploded perspective view showing the operative relationship of certain parts of the device illustrated in Fig. 3. r

Referring, now more particularly to the drawings, the present invention is shown as applied to an ordinary roll mill wherein reference numerals l andz designate the standards of the mill frame, and numerals 3 and 4 designate the upper and lower rolls, respectively,

With reference more particularly to Fig. 2 of the drawings; a. grinding and polishing device made according to the present invention com.- prises a pair of carriers 5 which are constructed and arranged for disposition at opposite sides of the bite of the upper and lower rolls 3 and i in the relationship" shown in the drawings. Each of the carriers 5 includes a pair of oppflsitely ar: ranged abrasive block supporting portions 6 of arcuate configuration conforming substantially to the curvature of the mill rolls 3 and 4, respectively, and disposed centrally and outwardly of these support portions 6 is an integral vertically extending flange portion 1.

The two carriers 5 are retained in the positions shown at opposite sides of the bite of the rolls 3'and t by means oia tie-rod or the like 8 which extends between the said rolls and through suitably aligned passages s provided in the flanges l of the carriers 5. The outer end portions of the tie-rod 8 are threaded as indicated at Ill and H, respectively, to receive thereon an adjustable stop memberlz and an adjusting hand wheel l3. The

mid portion of the tie-rod 3 is reduced in diam:

eter as shown at Hi to receive sleeve or tubular shield l5 of plastic or other suitable material that will serve to prevent damage to the rolls such as scratching or scarring of the surfaces thereof being ground or polished.

As shown in Fig. 2 of the drawings; each of the arcuate support portions 5 of the carriers Sis provided with a pair of recesses 16 adapted to removably receive therein abrasive blocks or the like I! selected according to the particular grinding or polishing operation to be performed. These recesses extend horizontally or transversely of the carriers 5 in ciroumferentially spaced relation with respect to the arcuate configuration of said supports 6 and the rolls 3 and 4. It is to be noted with reference to Fig. 3 that in the direction circumferentially of the rolls 3 and l the recesses 16 are of substantially greater width than the abrasive members I! and that while thelvinher wall {8 of each recess "f6 lies'in a plane 'p'erperididulair to the side faces Biz and 6b of the support portions 6, the outer wall IQ of each recess is angularly disposed as indicated to provide a tapered space between it and the block l? for the reception of a wedge element 28 that serves to clamp the abrasive block andretainit firmly with the recess ['6 a'gaiiist"'accidental displacement.

The wedge element 28 may be loosened or tightened with respect to the abrasive block I! by means of a screw or the like 2! threadediiito a tapped bore 22 arranged as shown in the support portion 6 andc'ounterbored as indicated at 23 to receive the head 24 0f the screw 2| which also'engages withina relatively shallow arcuate "recess '25 provided 'in the wedge element 20. By this COnstructionitWill be observed that as the screw 2| is threaded inwardly or outwardly of thebores 22 andZS so'also will the wedge element 2E3 be moved inwardly oar-outwardly with respect to the recess IE and the member I! thereby clamping the latter more firmly in the carrier or releasing'it, as the case maybe.

The 'inner face of each abrasive block I1 is adapted to seat or abut again'st a backing plate 26 disposed inthe recess 16 and provided with ears. 2'! at its opposite ends which outwardly lap the side faces 6a and 6b of the carrier support portions 6 and are provided with radially extending slots 23 that slidably receive screws or the like 29 which limit the extent of radial movementof the plate '26 and may be tightened to secure the said plate in aselected position within said: limits. Pairs-of set screws 3d having lock nuts. 3i are mounted in the support position. 6 of the carriers5 at opposite sides of the flange I the present invention provides a novel grinding andpolishing device which is portable and may be'used effectively to refinish and resurface rolls in' tlr'e field. The invention also provides a de- -"vice "crane stated type which embodies novel features of construction and arrangement for securing and adjusting therein the abrasive mem- The invention further provides a novel grinding and polishing device having the features and. characteristics-herein described which is of relatively simplified and inexpensive .=construction and highly effective and efiicient-ain operation 1 and use.

. While a particular embodimentof the invention has been illustrated and described'herein, it is not intended to limit the inventionito such disclosure, and changes and modifications may be made therein and theretowithinthevscope of the claims.

I claim: V r p 1. In a portable grinding or polishing device iorrolis, apair of carriers adapted tc be positionedat respectively oppositesides oi- -thabite of a pair of rolls and having arcu-ate support portions arranged substantially to-conf or m to the curvature of the rolls, andmeansassociatedtwith said carriers andarranged to extend-between said rolls to support the carriers relative to; the

= rolls.

.thereofand'arranged in themanner shown to engage inwardly against the backing'plate 26 as shown inithe. broken away and sectional portions of Fig.2 of thedrawingsr Thus it will bejapparent that theseveral screws 2!,529 and -3.l maybe manipulatedv to variously positionthe abrasive blocks IT- radially within their recesses 15- asthe particular job may require, and that the s crewsgll may, be manipulated to release the blocks I'ljf-or removal and replacement'or substitution and then be securely clamped in fixed position in the recesses 'lfi'of thecarriers 5 as required or desired. V

The device may be readily and easily mounted incooperative association withapair oirolls, forexample, mereiy by removing the hand; wheel I3 and the adjacent carrier 5 ircm the tie-rod 8 and then passingthelatter between the rolls 3 and} from the other side of the. bite thereof after which the removed carrier may be replaced together with the hand wheel l3. Assuming that .the abrasive blocks I! are properlylposi- .tioned within the recesses lfiythe rolls's and 4 may be rotated and-when up to speed the hand wheel l3, may be adjusted to place the several abrasive blocks Iiiinto contact with the surfaces of the rolls 3 and 4 at thepressure desired. In the event only one of the rolls is to be surfaced the; abrasive blocks if! associated with the other roll may be replaced with .plain hard wood blocks orthe like.

2, 11 9; portable grinding orpolishing device for rolls, a pair of carriers adapted -to be;positioned at respectively opposite sides of the bite of a pair of rolls and having arcuate support portions arranged substantially to conformto thecurvature of the rolls, abrasive members carried by saidcari ier support portions and iar- -ranged to engage the surfaces of said rollfs,means arranged'to extend between the rolls andlinterconnectingsaid carriers-to support the same relatlve to therolls, and means operablelto. adjust the said carriers relative to one-lanotherand thereby regulate the contact of saidabra'sive members with said rolls.

3. In a portable grinding or 'poli'shinggfdevice' ior rolls, a pairof carriers adapted td .be' positioned at'frespectivelyopposite sides of j ithe bite I of a pair of rolls 'and'having arcliate support'portions arrar'iged sub'staritially to conform t'o'ithe "curvature of the 'rolls, "abrasiva'members adji lstably carried bysaid carrier support portions aridlarranged to'eiigtigei'th'c "surface-s hf'isaidli'olls; .a tie-rod arraii'ged 'to e'xtendj'betweenthe rolls' land interconnecting" said carriers" to support the same relative to the rolls, and means ,onjsaid 'tie'f'rod manually operable" to adjustf thesaid carriers relative to one another and therebyregulateithe Contact off'saidf abrasive members'withj shirifblls.

j' 4. In i a' portable grinding or polishing device, pair" ercs'rriersaaidstec to be posit'ioned' at opposite 's'ides of the bite of a' pair ofrollsj and having "arcu'ate support p'ortions' substantially conforming to the curvature". ofthei rolls', --said support portion having recesses therein each'defined in. part, by relatively spaced wall;v portions one of which is disposed at an angle to the other wall, an abrasive member in each recess, a Wedge shaped member in each recess intermediate the abrasive member and said angularly disposed Wall to clamp the abrasive member therein, means to secure said wedge member in clamping position relative to said abrasive member, a tie-rod arranged to extend between said rolls and interconnecting said carriers to support the same relative to said rolls, and means to adjust the carriers relative to one another and thereby regulate contact of said abrasive members with the surfaces of said rolls.

5. In a portable grinding or polishing device, a pair of carriers adjusted to be positioned at opposite sides of the bite of a pair of rolls and having arcuate support portions substantially conforming to the curvature of the rolls, said support portion having recesses therein, an abrasive member in each recess, a member to clamp the abrasive member therein, a tie-rod arranged to extend between said rolls and interconnecting said carriers to support the same relative to said rolls, and means to adjust the carriers relative to one another and thereby regulate contact of said abrasive members with the surfaces of said rolls.

6. In a portable grinding or polishing device, a pair of carriers adjusted to be positioned at opposite sides of the bite of a pair of rolls and having arcuate support portions substantially conforming to the curvature of the rolls, said support portion having recesses therein, an abrasive member in each recess, a clamp member to secure the abrasive member therein, a tie-rod arranged to extend between said rolls and interconnecting said carriers to support the same relative to said rolls, and a threaded member associated with each of said carrier support por tions and engaging said clamp member operable to advance and retract the latter relative to said abrasive member for respectively securing and releasing the latter within said recess.

7. In a portable grinding or polishing device for rolls, a pair of carriers adapted to be positioned at respectively opposite sides of the bite of a pair of rolls and having arcuate support portions arranged substantially to conform to the curvature of the rolls, abrasive members carried by said carrier support portions and arranged to engage the surfaces of said rolls, means operable to predeterminedly position said abrasive members individually within said slots radially with reference to an adjacent roll, means to clamp each of said abrasive members in such predetermined position, means arranged to extend between the rolls and interconnecting said carriers to supone another and thereby regulate the contact of said abrasive members with said rolls.

8. In a portable grinding or polishing device for rolls, a pair of carriers adapted to be positioned at respectively opposite sides of the bite of a pair of rolls and. having support portions for abrasive members disposed adjacent the surfaces of said rolls, and means arranged to extend between the rolls and interconnecting said carriers to support the same relative to the rolls.

9. In a portable grinding or polishing device for rolls, a pair of carriers adapted to be positioned at respectively opposite sides of the bite of a pair of rolls and having support portions for abrasive members disposed adjacent the surfaces of said rolls, a tie rod arranged to extend between the rolls and interconnecting said carriers to support the same relative to the rolls, and means on said tie rods manually operable to adjust the said carriers relative to one another and the surfaces of said rolls.

10. In a portable grinding or polishing device for rolls, a pair of carriers adapted to be positioned at respectively opposite sides of the bite of a pair of rolls and having support portions for abrasive members disposed adjacent the surfaces of said rolls, abrasive members carried by said support portions and arranged to engage the surfaces of said rolls, a tie rod arranged to extend between the rolls and interconnecting said carriers to support the same relative to the rolls, and means on said tie rods manually operable to adjust the said carriers relative to one another and said rolls.

WILLIAM HENRY WILKES.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 597,518 Winters Jan. 18, 1898 1,204,450 Joseph et al Nov. 14, 1916 1,357,207 White Oct. 26, 1920 1,873,330 Rottler Aug. 23, 1932 FOREIGN PATENTS Number Country Date 7 742,435 France Dec. 27, 1932

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