US1528392A - Multiple-part segmental roll - Google Patents

Description

man. 3. 1925. 1,528,392

G. BAEHR MULTIPLE PART SEGMENTAL ROLL Filed March 16, 1925 14E 15g e '-22.92 {NVENTCRIv W'TNESSESS @am ww d @W Patented Mar. 3, 1925 UNITED STATES GEORGE BAEHB, 0F IRWIN, PENNSYLVANIA.

'MULTIPLE-PART SEGMENTAL ROLL.

Application filed March 16, 1923. Serial No. 625,643.

To all 'whom' t may concern.'

Be it known that I, GEORGE BAnHm a citizen of the United States, and a resident of Irwin, in the county of Westmoreland and State of Pennsylvania, have invented a new and useful Improvement in Multiple-Part Segment-al Rolls, of which the following is a specification.V f

This invention relates to composite rolls for shaping metal bars and blanks. More particularly it relates to composite rolls having a permanent body member, and interchangeable segmental facing or forming members adapted to be arranged in parallel cooperating series upon the roll body and clamped thereon.

The object of the invention is to provide forming segments so shaped and arranged that three or more parallel series of segments cooperate, forming grooves being provided by the cooperating interitting segments.

A further object is to provide segmental forming members adapted to cooperate in three or more parallel series of segments, wherein an intermediate series of segments constitutes the bottom of a forming groove, the exposed faces of said intermediate segments having raised or sunken portions for the purpose of forming indentati'ons or propections in any desired form of configuration upon the side of a. bar formed in the groove. y

Another object is to provide in a composite roll comprising removable forming segments a groove wherein the two sides and the bottom are formed respectively by separate removable segments.

Another object is to provide removable forming segments in three or more cooperating pairs, so made that when the grooves foi-med by the segments have become worn, the faces of the segments may be machined off, the segments moved toward each other to compensate for the loss, and the grooves ie-dressed, without changing the dimensions of the forming grooves and without reducing the effective size of the roll.

Other objects and advantages will appear to those familiar with the art from the following specification.

Referring to the drawings, Fig. 1 is a plan view and partial section .of a roll embodying one form of this invention, the roll being shown removed from its bearings;

Fig. 2 is a partial vertical section through a pair of cooperating rolls, taken on the line II--Ilf of Fig. l, in so far as the section of that kroll is concerned; Fig. 3 is a partial section similar to that of Fig. 2, showing intermediate forming segments of slightly different form.; Fig. l is a partial section similar to that of Fig. Qshowing segments for forming raised projections upon the bar; Fig. 5 is al partial section showing a modied arrangement of segments adapted to form round and diamond shaped bars in two grooves formed by three segments; Fig. 6 is a modiiication showing three cooperating series of segments adapted to roll a standard I-beam; Fig. 7 is a partial section showing an arrangement of segments adapted to roll a small rail; Fig. 8 is a partial longitudinal section through one of the rolls illustrated in Fig. 4L; Fig. 9 is a'modifioation showing four cooperating series of segments forming three finishing grooves at their meeting edges; Fig. 10 is a modification of the arrangement for rolling standard I-beams as illustrated in Fig. 6, in that two intermediate segments are used instead of one, the single individualsegment of Fig. 6 being split in the middle; and Fig. llis a partial section showing the parts of Fig. 10 as they appear after having been re-dressed, and eX- panded by the addition of an intermediate ring.

ln my prior Patent No. 1,289,602, there is ldescribed a composite roll comprising a permanent roll body adapted to receive removable forming segments, arranged in parallel series, with a` forming groove at the meeting edges of the series of segments, and means for clamping the segments rigidly upon the roll'body.

That roll has proved highly-successful in practical operation, and the present invention comprises a roll of the same general character, the improvement lying in the provision of three or more cooperating segments, the intermediate segments vbeing held in place by overhanging portions of the outer segments, and the modification of the forming groove rendered possible by this construction. The present arrangement permits the rolling of products having two or c three plain faces, the other side having' indentations or projections thereon such, tor

f example, as gear teeth. It has, prior to this invention, not been practical to roll such shapesfsince they'required the forming of an irregular bottom to the groove, and that could only result from the casting or' a solid roll having' the irregular groove formed therein by the casting operation, or else by expensive machining operations.

By the present invention l am able to machine the Jforming face of the intermediate segments without diiculty, as will be obvious to those skilled in the art, and then by placing them betweentwo outer series ci segments having plain forming faces, a groove having straight sides andan irregular bottom is VAproduced. Furthermore, ivlientlie groove hasbecoine Worn l can remove and readily machine the outer segments, and the forming tace of the intermediate segments,*thus-producing in effect an entirely nenY groove. without changing the roll body at all. By this invention the tbrmingcsegnients themselves may be made ot 'high grade tool steel or thev like, vvhile the roll body may be made ot much cheaper material. such as cast steel. hese hardened tool'steel forming segments will ive-ar very much longer, and may be redressed many times, thus reducing the cost ot rolling special bars.

Referring to the drawings, in Fig'. 1 there is illustrated a roll comprising a solid body 1, having the usual necks 2 and Wobblers 3 at each end thereoit tor engagement with proper housing and driving mechanism in the usual manner. 'It will be understood that although one roll is illustrated in this iigure, that a Cooperating roll is understood,

inoperation mounted vin a manner to contact with the one illustrated, in the usual ifrarallel arrangemei'it.

At one end of the'roll body a tixed collar, or raised abutment lis pro-vided, and this has an inner undercut beveled tace 5 as clearly illustrated; At the other end the roll body has formed thereon threads 6, and an internally threaded sleeve or nut is adapted to engage the threads (S of thev roll body, and to 'be turned down thereon, as

illustrated at theright of Fig. 1. For the purpose of `ti'glittening or loosening this nut T on the roll, aV brake band, extending 'around the roll body and adapted to engage Aagroove 9 in'the nut is provided. This brake `band is lixcd at one end as will be understood, and at the other en'dis attached to a screwv V10, which extends through a threaded hand Wheel 11, rotatably inomited in some `fixed part of the frame. Consequently byturning the hand Wheel 11 the screw 'lOm'ay be drawn tliereinto.v thereby tighteningthe brake band Supon the nut 7. Aiter thisisdone the rollmaybe turned by the regular driving mechanism, the brake meantime holding the nut in tixed position, and thereby the latter member may be readilyr tightened or loosened'up'on the roll. Set screyvs 12'extend laterally through the nut, for the purpose ot locking it in position aiter it has beenset. In practice, the linal tightening and first loosening is accom` plished by these set screws. This because it is inadvisable to run the nut 7 down too tight. It that be done it is very ditlicult to loosen it, owing to the large surface contact with the roll body. The set screws are therefore used to give the linal tiglitening and they ma)7 be readily loosened, whereupon the nut can be released by the brake. y

This invention is chietly directed to thc use oft three parallelseries of cooperating segments, the outer series overhanging and locking-in place the intermediate" series, 4and the threeseries cooperating to form a .single groove. Important moditications are shown, butfthe form just-'above referred to will bo .first 'dc-iscribed. It is very clearly illustrated Vin one torni in Fig. 1. Referring to it. and

to the lett upper vportion of that figure. it will be yseen that a rectangular groove 13, constituting one-halt of a square is formed by outer segments le and 15, and .intermediate segi'mmts 16. The segments 1-1 and l5 aretidentical, except that they are turned in y"opposite directions so as to have correspending edges yoppositeiy disposed. The segments lit and 15` are formed With inner faces .iTand 1'8 respectively, curved so as to seat securely upon the cylindrical roll bodyl. rheir opposite outericurved .t'aces are. ot course cylindrical and concentric. so as to Abe i'iorm'ally formed port-ions ot the cylindrical exterior face ot the composite roll itself. The segments 14.- vand 15 have inner straight- faces 19 and 20, adapted to form the sides of the groove 13, the bottom of which is formed by the exterior faces 2t of intermediate segments 1G. The segments 14C` and 15 have beveled outer sides and 23, opposite faces 19 and 20, respectively. @n their inner sides the segments 1+i and 1:3 have the straight faces 19 and 2O above re'terred to, and beloi'v `these straight 'faces the se'vjments are cutaway to'forni b -\veled undercut side faces 2st and 25. respectively. These beveled faces are adapted to overhang and seat respectively upon correspondingly beveled extensions 2G and QTot the intermediate segments 16. The beveled tace 22 ot segment 1st is adapted to lie under and bc enga-ged by the undercut beveled tace 5 oi? the 'collar member The corresponding', beveled 'face 23 of segment 1 5 is adapted to be engaged bythe undercut beve-led tace 2T ot a slidable ring 28. which iits loosely upon the roll body 1. beinglslipped thereon before the nut'T is positioned. rlhe ring 2S is vbacked `by the straight .sided 'slidable ring 29, made `of a metal of a high coeflicient of expansion, and adapted to take up any looseness of the parts that might develop in heating as is known in the art and described in my patent above noted.

The roll may be completed by use of only the parts above described, or a second groove 13lL may be formed thereon by means of a corresponding but oppositely turned undercut ring 30, segments 14a and 15a, similar in all respects to segments 14 and 15, and intermediate segments 16, either similar to the segments 16, or modified as illust-rated at the right of Fig. 1, and as described in detail below. A third undercut ring member 31 engages the beveled face ofthe segment 15a as illustrated, and this ring contacts with and is driven inward upon the roll by the nut 7, as illustrated.

The forming segments themselves may be made in different lengths, provided that their length and number be such that when arranged in series alignment they completely surround the roll. I prefer to use comparatively short segments, since the shorter segments are easier to handle, easier to machine, less likely to break in use, seat more securely upon the roll, and are less expensive to replace individually in case there should be a defect or breakage at any point. When all of the segments are placed together as shown in Fig. 1, similar segments are placed in alignment to form a series extending entirely around the roll as illustrated. The lengths of the segments are so chosen that they seat directly upon the roll body, and are not supported end to end `arch-forming, Each of the vouter segments is clamped seeurely against the roll body by means of an overhanging member, and this overhanging compression s made of any desired tightness by driving` the nut 7 inward upon the roll body, and then tightening ythe set screws 12. Y

Thile the shorter segments are preferred.` it is possible to use them in longer lengths. A modification comprising rings cut through at one place, so as to permit forcing firmly to a seat on the roll, may be used in certain cases.` These rings are slid on from the end of the roll, and held in position by overhanging faces, as above described.

The outer series of segments 14 and 15 overhang and abut directly againstthe intermediate series of segments 16, so that the three are held rigidly together and against the roll body..`

In the particular form shown at the left of Fig. 1, these segments are arranged to roll a square, the bar lying upon one of its faces. its corner, V-shaped grooves being machined lin the face of a solid roll. When such grooves have become worn so that the groove edges have .t0 be remachined, it is necessary Ordinarily aV squareis rolled upon l -to turn down the entire face of the roll and then to yre-cut the groove. This forms a smaller roll and requires adjustment of the housing and driving mechanism. In the form illustrated, when the corners of the segments 14 and 15 wear, these segments may be removed, the faces 19, 20, 24, and 25 machined down so as to restore the sharp corners, and replaced. The metal removed simply allows the segments to move closer togethenbut the size of the groove and size of the roll will be unchanged. The segments of the cooperating rolls are dressed at the same time and to the same extent, so that the only effect is the moving of the groove as a whole slightly to the left, and no adjustment of the housing or driving mechanism is necessary.

Vear in. the intermediate section 16 will be comparatively slight as compared 'to that ofthe meeting corners of segments 14 and 15. However, the face 21 of the intermediate segments 16 may be readily machined down to restore it to its original circular form. This would make the groove slightlj.7 deeper, and if this enlargement is objectionable, the faces 26 and 27 of the intermediate segments may be dressed down a distance equ al to the amount that has been taken ofi" the face 21, and a liner member positioned under ihe segments 16, extending entirely around the roll body, and so building them up to their original height and thereby maintaining the exact size of the grooves. .in additional filler section is inserted to (ill up the resulting gap between segments. l have described and claimed such a construction for expanding the size of my form- 'ing segments in my coi-pending vapplication lSerial-No. 576,491, filed July 21, 1922.

At the right of Fig. 1 an arrangement is shown comprising modified intermediate segments 16. These segments are illustrated in greater detail in Fig. 2, wherein are shown transverse teeth 82, in the forming face of these intermediate segments. As

will be seen by Fig. 2, such an arrangement of segments with cooperating rolls forms a thel rolls would have three plain faces and teeth upon the fourth side. Consequently, it is possible to roll a Arectangular bar having three plain faces, and rack teeth upon the other. Or teeth may be provided upon both sides, as Yillustrated in Fig. 2.

`In Fig. 3 a modification is shown in that 'the intermediate sections 16b are provided with serrations 35, thus producing a bar 33at which has two plain faces and two opposite faces formed with transverse serrations 36.

-bar 8B having` transverse ribs or teeth 34 Such forms fare valuable in' concrete reinlforcement construction, and also in certain forms of lcutting machines.

In vFig. 4 there is illustrated a modification in that the isegments 16c are provided with indentations', which produce raisedlugs'or projections 38 upon oppositesides ofthe bar 33". Here aga-in the yconstruction can be readily varied toproduce a projection upon only one side, o-r'to produce-the projections 38 upon two opposite sides of `a bar. These indentations may be arranged Vin staggered order, of various forms, and of any desired closeness, as will be obvious. Instead of indentations conical projections may be provided on the face of the segments, which will form` indentationson the bar. A great variety of such forms may be rolled, due to the fac-t that 4'the intermediate segments employed are very'easily handled and machined so that the face 21 may carry any desired configuration that will clear itself from the hot metal. This will be readily understood by those familiar with the art. In Fig. 8 a cross-section at right angles to that of Fig. 4 is fully detailed.

In Fig. 5 a modification is shown in that the intermediate segment` 16d extends out lHush with the other segments, and two forming grooves 13b and 13c are cut at the meeting edges of the respective segments, 14h, 16d and 15b. The shape of the particular groove formed is not a part of the invention, but for the purpose of illustrating the variety of grooves possible with the present invention I have illustrated grooves 13b as adapt-- ed to form around, and 13C'as adapted to form a. diamond-shaped or square bar. Quite obviously the kgrooves may be of any particular form capable of being made between segments. Or they may be of the same form in different sizes, for making a first and second pass of the same stock, or they may be made of exactly the same shape and size, and one groove used until it is worn out, then the next groove, etc., then the segments removed and the grooves redressed.

The outer segments 14h and 15b are illustrated in Fig. 5 as narrower 'than the segments 14 and 15 of Fig. 1. This, because, for use with a standard roll body it is desirable that the three segments 14", 15d and 15b occupy the same space llongitudinally -upon the roll as the segments 14, 15 and 16. It yis desirable to have segment 16d wider than the segment 1G so 'as to space the grooves 13b and 13 wider apart, and this accounts for the reduction inwidth of segments 14b and 15b. However, if only one combination of segments is to be applied to the roll, or if a longer roll body is used, the standard segments 14 and 15 may be used insteadof the segments 14bv and 15b. the only change being in the dressing off of the cor- :ners :to form the grooves. It will be observed `that in large .measure corresponding parts are interchangeable 1n the forms l shown.

In Fig. G there is illustrated a. combination of three series lof. segments adapted to roll a. standard. yfI-beam. Vlhen the `outer segments 14c and 1.5c become worn atwtheir corners these may be removed and re-dressed upon their two, inner groove-forming faces,-

VFormally `these segments are vplacedback to back as shown in Fig. A10. But when the grooves have become so. worn that their fori'ning faces have to be re-dressed, the

faces 9,1a andQlb may be machinedoff toproduce the desired groove face,the beveled faces 26a and 27a cut down a corresponding amount, which restores the groove to its former size, and then. an annular washer member 40 inserted between the segments 16f and 16g, as illustrated in Fig. 1.1. This washer is in thickness twicethe amount that has been taken ofi' .of each outer face of the segment, and consequently it restores 4the groove to its originalposition byexpanding the segments internally an 'amount'equal to that which has been taken, olf on vtheir outer faces.` If the upper face of `any of the segmentshave to be re-dressed'this may be done without reducing the roll body-by inserting a lining `member thereunder around the roll, as above referred to in connection with my co-pending application Serial No. 576,491.

In Fig. 9 there is illustrated still another modification inthat two series of intermediate segments 16h and 16are provided, with a groove 13d at their meeting edges, and

other grooves 13e and 13f at the meeting edges of the outer segments 14f and 15f. This modification also serves toillustratethe liexibility Vof the Aarrangement .of three -or their forming faces. Consequently, the var! ous segments for making up the combina? tions illustrated may be cast or forged inr standard units, and dimensions. These may then be machined to the particular use desired, and interchangeable parts made up with a minimum of expense.

l claim:

l. A composite roll comprising a body member, three or more cooperating parallel series of removable facing segments adapted to be seated and retained on the body member, the two outer series of segments having undercut portions adapted to extend over and engage cooperating lateral extensions of adjacent intermediate segments.

2. A composite roll comprising a body member, removable facing segments adapted to be seated and retained thereon, said segments being arranged in cooperating parallel series, the two outer series of segments having undercut portions adapted to extend over and retain cooperating beveled edges of intermediate segments.

3. A composite roll comprising a body member having an undercut fixed retaining collar and an undercut ring thereon, removable forming segments adapted to seat upon the roll body, and to be arranged. in not less than three parallel series, the two outer series of segments having their outer faces respectively engaged and retained by the overhanging collar and the undercut ring positioned upon the roll body, the inner faces of the outer segments being partially undercut, the outer faces of the intermediate segments having a portion adapted to extend under and be retained by the undercut portion of the outer segments, whereby all of the segments are clamped against the roll body and against each other.

4. A composite die forging roll comprising a body member, three or more cooperating parallel series of segmental facing members adapted. to be seated and clamped on the body member and to form a groove `between the meeting edges thereof, and

means to clamp the segments against each other and against the roll body.

5. A composite die-forging roll comprising a body member, removable facing segments having beveled edges and adapted to seat on the body, overhanging means engaging said beveled faces and clamping the segments together and against the roll body, said segments being arranged in three parallel cooperating series, and forming a groove between the longitudinal meeting edges of the segments.

6. A composite die-forging roll compris ing a body member and removable forming segments adapted to be seated and clamped upon the body member, said forming segments being arranged in three parallel cooperating series, the outer series forming the sides of a groove and the intermediate series forming the bottom of a groove.

7. A composite roll comprising a body member' and removable forming segments adapted to be seated and clamped upon the body member, said forming segments being arranged in three parallel cooperating series, the cuter series forming the sides of a groove and the intermediate series forming the bottcm of a groove, the intermediate segments being retained against the body member by overhanging portions of the outer segments.

8. A composite roll comprising a main body; member, facing members formed in series of similar segments, said facing members being arranged in threecooperating series, 'the outer series having their outer faces beveled, overhanging means to engage these beveled faces and to clamp the seg ments against the roll body, the intermediate series of segments being overhung and clamped against the roll body by the outer series of segments, and a groove formed between the segments and extending around the composite roll.

9. A composite roll comprising a roll body, removable facing segments,` retained upon the roll body, said segments being arranged in three cooperating series with a groove formed between the three series of segments, the outer segments forming the sides of the groove and the intermediate seg ments forming the bottom thereof, t-he forming face of the intermediate segments being adapted to forge a special configuration on one side of a bar formed in the groove.

10. A composite roll for die-finishing bars, comprising a body and removable segments adapted to seat on the body and to be clamped thereon, said segments being arranged in not less than three parallel series, two outer series of segments forming the sides of a groove and intermediate series of segments forming the bottom of the groove, the outer segments having overhanging portions for engaging and retaining the intermediate segments.

ln testimony whereof, I sign my name.

GEORGE BAEHR.

ldfitnesses F. B. Daams, MARY L. BAEHR.

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