US1735746A - Rolling mill - Google Patents

Description

Nov. 12, 1929. H, R, GEE 1,735,746

ROLLING MILL Filed Jan. 15, 1926 4 Sheets-Sheet 1 INVENTOR flar Gear.

BY QIIZL@% ATTRNEYS H. R. GEER V Nov. 12, 1929.

ROLLING MILL 4 Sheets-Sheet 2 Filed Jan. 13, 1926 LINVENTOR I ATTORNEYS Nov. 12; 1929. H. R, GEER 1,735,746

ROLLING MILL Filed Jan. 13, 1926 4 Sheets-Sheet 4 area.

I L. M'

ATTORNEYS Patented Nov. 12, 1929 UNITED STATES PATENT OFFICE HARRY R. GEEB, E JOHNSTOWN, PENNSYLVANIA, 'ASSIGNOR TO BETHLEHEM STEEL COMPANY ROLLING MILL Application filed January 13, 1926. Serial No. 80,922.

Myinvention relates to edging devices for mills.

In rolling mills, particularly those of the continuous type, it is frequently desirable to provide edging devices or rolls in order that the edges of a blank may be trued or squared up between passes or stands. ThlS 1s essential with mills of the continuous type for rolling certain kinds of bars, for example,

tin bar sections. Accordingly, it is an ob ect of my invention to provide edging apparatus which is characterized by the fact that 1t 1s carried by a stand and that the edglngrolls thereof are of the idle type, that is, they are rotated merely by contact of a blank therewith.

A further object of my invention is to provide apparatus of this character wherein edgin rolls andstripping members are arranged on a carriage, the latter being free to move transversely of the stand.

A further object of my invention is to provide edging roll apparatus of this character wherein the edging rolls are readily ad ustable toward and from each other.

These and other objects are accomplished by my invention as will be apparent from the following description and claims taken in connection with the drawings, wherein- Fig. 1 is a perspective view of the mill stand showing my improvement applied thereto; 7

Fig. 2 is a detail view partly in sectlon and partly in elevation of apparatus shown 1n Fi 1" Fig. 3 is a sectional view taken along the line III-III of Fig. 2;

Fig. 4 is a sectional view taken along the line IV-IV of Fig. 2, and viewed in the direction of the arrows;

Fig. 5 is a top plan view of one of the stub shafts for the edging rolls;

Fig. 6 is a detail view of the clamping bar for the upper ends of the stub shafts; and

Figs. 7 and 8 show backing'bar details, Fig.

7 showing a serrated locking member and Fig. 8 showing one of the backing bars.

Referring to Fig. 1, I show a mill stand at 10 of conventional type having upper and lower rolls 11 and 12 arranged therein, the

fitting bearings-24 carried by the carriage.

stand having frame members provided with vertically arranged bolt head slots 13 at the discharge side of the main rolls. My improvement or invention relates generally to edging apparatus at 14 which is adapted to be bolted in position with respect to the slots 13 by bolts 15.

Referring to the edge rolling apparatus more in detail, this comprises,first, a rest bar 16, which is bolted in place with respect to the roll stand frame as indicated in the drawings, and, second, a carriage 17, which is movable along the rest bar, the carriage having mounted thereon edge rolls 18 and upper and lower stripping devices :19 and 20. The rest bar 16 is arranged at the discharge side of the main rolls 11 and. 12 and substantially parallel to the axes of the latter. It will, therefore, be apparent that, the carriage 17 is capable of movement along the rest bar in order that the edging rolls 18 may be properly positioned laterally with respect to a bar issuing from the main rolls 11 and 12.

It is desirable that the edging rolls shall be capable of being adjusted toward and from each other in order to properly square up or roll the edges of bars of desired widths. To this end, I show the edging rolls 18 journaled on journal portions 21 of stub shafts 22, the stub shafts 22 having journal portions 23 Since the journal portions 21 for the edging rolls 18 are eccentric to the supporting journal portions 23, it will be apparent that, if the stub shafts 22 are turned, the edging rolls will be caused to approach or to recede relative to each other due to the eccentricity of the journal portions 21.

In order that the stub shafts maybe held in fixed positions of adjustment as well as tied together in order to resist any tendency to spreading due to passage of a bar between the edging rolls 18, I show the upper ends of the stub shafts 22 provided with pintle or journal portions 25 adapted to engage openings 26 in a clamping tie bar 27. The tie bar is slit, as indicated at 29, and clamping bolts 30 having nuts 31 cooperate with the outer ends of the clamping tie bar in order that the end portions may be firmly clamped 100 to the pintle or journal portions 25 of the stub shafts 22. With the tie bar firmly clamped to the upper portions of the stu shafts, it will be apparent that any tendency of the stub shafts to spread is resisted and also that the stub shafts are firmly held against rotation so that the edging rolls 18 may be maintained in fixed positions.

In order that the stub shafts 22 may be turned to cause the edging rolls 18 to approach or to recede relatively to each other, I show the lower ends of the stub shafts 32 having worm gears 33 keyed thereto, the worm gears meshing with a Worm wheel 34 engaged by a detachable actuating shaft 35 journaled in bearings 36 and 37 carried by the carriage 17. With loosening of the clamping tie bar 27 with respect to the pintle or ournal portions 25, co-axial with the journal portions 23, the stub shafts 22 may be readily turned simultaneously and in opposite directions by actuation of the shaft 35. After the requisite degree of adjustment of the edgin rolls 18 is secured, the clamping tie bar 2 is clamped to the upper ends of the stub shafts for the purposes already stated.

Referring to the rest bar 16 more in detail, it will be seen that it consists of a casting provided with two guide means for the carriage 17, one of the guide means takin the form of supporting rollers 38arrange adjacent to the main rolls and below the other guide means 39 taking the form of an upwardly extending tongue. The carriage consists essentially of a suitably formed casting having bearings for the rotatable parts already enumerated and a trackway 40 which cooperates with the rollers 38. The rearmost portion of the carriage is provided with a groove 42 which is adapted to fit over the upwardly extending tongue 39. The casting of the rest bar is provided with a slot 43 through which the actuating'shaft 35, already referred to, normally extends, so that such shaft is readily accessible to secure adjustment of the edge rolls 18.

In order that the carriage 17, with the devices carried thereby, may be readily removed from the rest bar, the shaft 35 is detachably mounted with res set to the worm wheel 34 and thecarriage 1 To this end, I show the shaft 35 provided with an intermediate annular groove 44 which is engaged by a releasable key 46. If it is desired to remove the shaft 35, the key 46 is released and the shaft is pulled out. In order that the shaft 35 maybe readily actuated, I show it provided'with a hinged hand lever 47. The'worm wheel 34 is arranged in a chamber or recess 48 provided in the carriage 17; and, in order to prevent the worm wheel from dropping out when the shaft 35 gaged underneath the rim by a screw 50 carried b the wall of the-chamber 48.

The e ge rolls 18 are lubricated i by oil or grease supplied from the cups 51, grease in Fig. 4.- The indicating devices 54 are provided with graduations 56 to indicate tollthe operator the setting of the edging ro s.

arranged vertically beneath the edging rolls 18 and it will be seen that the tongue and groove guide connection comprised. by the parts39 and 42 is arranged at a considerable level above the rollers 38, with the-result that this mode of support provides a ver steady construction with little, if any, ten ency on the part of material passing between the edging'rolls ,18 to cause the carriage 17 to tilt rearwardly in the direction of passage of the blank or material, In order, however, to effectively resist any such tilting tendency due to passage of material between the edgin rolls, I preferably provide the clampin olts 30, already referred to, with extende heads or shanks 57, which are adapted to en age, rearwardly arranged abutments or clips 58 secured by bolts 59 in the machine grooves 13.

The upper and lower'stripping members 19 and 20 are carried: by the carriage 17 and move therewith. For this purpose, I show upper and lower backing bars 60 and 61, having recesses 62 and 63 for the reception of the outermost ends'of the stripping members 19 and 20, such stripping members being tapered, as indicated at 64 and 65, for cooperation with the upper and the lower main rolls 11 and 12, respectively. The lower rest bar 20 rests on the lower roll and in the recess 63 provided in the lower backing bar 61, whereas the upper stripping b'ar 19 is maintained in position with one end in the recess 62 and the tapered end 64 in engagementwith the upper roll 11 by any suitable biasing means, which may, for example,'take the form of a lever 66 fulcrumed at 67 with respect to the upper surface of the tie bar 27, one end of the The supporting rollers 38 are preferably Ill lever being connected by a link 68 with the ping members 19 and 20, particularly of the upper stripping member 19 may be secured, I showwashers 71 of suitable thicknesses arranged between the backing bars 60 and 61 and washers 72 of suitable thicknesses arranged above the upper backing bar 60. Bolts 73 pass through openings 74 in the backing bars and have. nuts 75 cooperating with their up er ends-above the washers 72. To the end t at the strippin members 19 and 20 may be adjusted towar and from the main rolls 11 and 12, I show the openings 74, see Fig. 8, elongated transversely and the upper surface of the lower backing bar 61' and the lower surface of the upper backing bar 60 are serrated longitudinally, as indicated at 76. The locking plates 77 have bolt openings 78 engaging the bolts 73 and have serrations 79 for engagement with the serrations 7 6, so that, when the nuts are tightened, the backing members 60 and 61 are held in predetermined positions. In Fig. 3, I show locking members 77 arranged above and below the group of washers 71. If the nuts 75 are sufliciently loosened, the backing bars 60 and 61 may be moved forwardly or rearwardly, the serrations thereon passing by the serrations on the locking lates 77, the latter plates being held in position due to the fact that the circular openings 78 thereof engage the shanks of the bolts 3. After the backing members have been adjusted to a suitable position inwardly or outwardly with respect to the main rolls, the nuts 75 are tightened, whereupon the serrations 79 of the locking member 77 interfit with the serrations 76 of the backing bars to hold the latter in position.

As will be seen from Fig. 2, the upper and lower stripping members 19 and 20 are preferably concave laterally, as indicated at 80,

in order to receive arcuate portions of the edging rolls 18 when the latter are ad'usted inwardly. This feature not only prov1 es for stripping members of suitable widths'and a suitable range of adjustment of the edging rolls 18 but also these concavities, in cooperation with the edging rolls 18, serve to assist in the maintenance of the proper longitudinal positions of the upper andlower stripping members 19 and 20.

From the structure so far described, the operation of apparatus made in accordance with my invention will be apparent. A bar or blank issuing from the main rolls 11 and 12 passes between the edging rolls 18, which serve to true up or square the edges of such a'bar or blank. In view of the fact that in continuous mill rolling, particularly where cylindrical main rolls are used for rolling flat bars, it -is necessary to provide considerable clearance for the bars in entering the guides and in view of the further fact that the bars change their. paths between the rolls to the is necessary to provide for lateralmovement of the edge rolhng device. Cons uently, the carriage 17 is mounted for latera movement so that the edgin rolls 18 may be adjusted in accordance wit the path taken by a bar issuing from the main rolls 11 and 12. The distance between the edging rolls 18 may be varied by turning the operating shaft 35, whereby the eccentric journal portions 21 may be moved to cause the edging rolls 18 to approach or to recede from each other, the clamping tie bar 27 having been previously unclamped; and, after suitably ad]usting the stub shafts 22 the clamping bar 27 is again clamped in position with respect to the upper portions 25 of the stub shafts. The carriage 17 is capable of movement laterally in the manner stated and movement of the carriage rearwardly, due to the drag of a bar passing clips or lugs 58 carried by the frame of the stand. The upper and lower stripping members 19 and 20 may be adjusted longitudinally or vertically by the apparatus already referred to. In case it is desired to remove the carriage 17, with the parts carried thereby, the locking key or member 46 is released and the actuating shaft 55 is pulled from the worm wheel 34 and the bearings 36 and 37 in the carriage, whereupon the carriage and its Iparts may be readily removed from the rest 'Having thus described my invention what I claim as new and desire to secure by Letters Patent is: h 7

1. The combination, with a mill stand, of a carriage carried by the stand and capable of free lateral movement relative thereto and edging devices carried by the carriage.

2. The combination, with a mill stand having main rolls rotatable about horizontal axes, of a carriage carried by the stand at the discharge side thereof and capable of free lateral movement relatively thereto and bar and laterally of the stand, and edging devices carried by the carriage.

4. The combination, with a mill stand, of a rest bar secured to the dischargeside of the stand and extending transversely of the latter, a carriage freely movable along the bar,

and edging rolls carried by the carriage.

65 extent of the side clearance in the guides, it 5. The combination, with a mill stand having main rolls rotatable about horizontal axes, of a horizontal rest bar secured to the discharge side of the stand and extending substantially parallel to the axes of the main 5 rolls, a carriage freely movable along the bar, and ed in rolls carried by the carriage and rotatab e :1 out vertical axes.

6. The combination, with a mill stand, of

' a rest bar secured to the discharge side of the stand and having laterally extending supporting rollers, a carriage resting on the supporting rollers and movable thereon and transversely of the stand, and edging devices carried by the carriage.

7.. The combination, with a mill stand, of a rest bar secured to the discharge side of the stand, supporting rolls carried by the side of the rest bar adjacent to the stand, an upwardly extending rib carried by the bar, a carriage resting on the supporting rolls and having a channel portion for engaging over said rib, and edging devices carried by the carriage.

8. The combination, with a mill stand, of a carriage capable of movement relatively to the stand, edging devices carried by-the carriage, and stripping members carried by the carriage and extending forwardly of the edging devices.

9. The combination, with a mill stand having main rolls rotatable about horizontal axes, ofa carriage capable of movement in a path parallel to the axes of the main rolls and arranged at the discharge side of the latter, vertical edging rolls carried by the carriage, and upper and lower stripping members carried by the carriage, extending upwardly of the edging rolls, and cooperating with the main rolls.

10. The combination, with a mill stand, of a carriage capable of lateral movement relatively to the stand, edging devices carried by the carriage, stripping member's carried by the carriage,'and means for securing transverse and longitudinal adjustments of the stripping-members.

11. The combination, with a mill stand having main rolls rotatable about horizontal axes, of a carriage capable of movement in a path parallel to the axes of said rolls and arranged at the discharge side of the latter, 1 edging rolls rotatable about vertical axes and carried by the carriage, upper and lower horizontally disposed backing bars carried by the carriage and having'opposed recesses, means for securing vertical adjustments of the backing bars, means for adjusting the backing bars forwardly or rearwardly with respect to the main rolls, a lower stripping member having one end fitting in the recess-of the lower backing bar andits other end tapered to cooperate with a lower main roll, an upper stripping member having one end fitting in the recess of the upper backing bar and hav- 65 ing its other end tapered for cooperation with an upper main roll, and means for normally biasmg the tapered end of the upper strip ping member u wardly.

12. The com ination,'.-.with a mill stand I having main rolls rotatable about horizontal axes, a rest bar carried by the stand at the discharge side of the rolls and extending parallel to the axes of the latter, a carriage movable longitudinally of the rest bar, vertical edginigrolls carried by 'thecarriage, upper and ower strippin members extending between the edging ro ls and toward the mam rolls for cooperation with the latter, means for securing relative verticala/djustments of the stripping members, and-means for securing adjustments of the stripping members toward or from the main rolls.

13. The combination, with a mill stand having main rolls rotatable about horizontal axes, a rest bar carried by the stand at the discharge side of the main rolls and extending parallel to the axis of the main rolls, acarriage movable along the rest bar, vertical edging rolls carried by the carriage, upper and lower backing bars carried by the carriage and having opposed recesses, and upper and lower stripping members having their ends remote from the main rolls fitting in the recesses of the backing bars and having their other ends tapered for cooperation with the main rolls, said stripping members having concave lateral recesses for fittingabout portions of the peripheries of the edging rolls.

14. The combination, with a mlll stand, of a carriage capable of lateral movement relative to the stand, shafts having eccentric journal portions,-edging rolls journaled on the journal portions, adjusting the shafts.

15. The combination, with a mill stand, of a carriage capable of lateral movement relative to the stand, shafts having eccentric ournal portions, edging rolls journaled on the ournal portions, means for rotarily adjusting the shafts, and means for maintaining and means for rotarily the shafts in positions to which they haveoeen adjusted.

16. The combination, with a mill stand, of a carriage capable of lateral movement relatively t0 the stand, stub shafts carried by the carriage and having eccentric journal portions, edging rolls journaled on the journal portions, and means for securing simultaneous and opposite rotary movements of the stub shafts in order that the edgin rolls may be caused to approach or to rece e relatively to each other.

17. The combination, with a mill stand, of a carriage capable of lateral movement relatively to the stand, stub shafts carried by the stand and having eccentric journal portions, edging rolls journaled on the journal portlons, means for imparting simultaneous, equal, and opposite rotary movements to the stub shafts in order that the edging rolls may be caused to approach or to recede relatively to each other, and clamp; g means cooperat-' ing with the stub sha outwardly of the edging rolls in order that the stub shafts may be clamped in adjusted positions.

18. The combination, with a mill stand, of a carriage capable of lateral movement relatively to the stand, stub shafts carried by the carriage and having eccentric journal portions, edging rolls journaled on the journal portions, means for securin the stub shafts simultaneously in opposite directions in order that the edging rolls may be caused to approach or to recede relatively to each other, clamping means cooperating with the stub shafts outwardly of the edging rolls in order that such shafts may be clamped in adjusted positions, abutment means carried by the stand, and strut means arranged between the abutment means and portions of said stub shafts outwardly of the edging rolls, whereby tilting eifects imparted to the carriage are resisted.

19. The combination, with a mill stand having main rolls rotatable about horizontal axes, a rest bar carried by the stand at the discharge side of the main rolls and extend ing substantially parallel tothe axes of the latter, a carriage movable along the rest bar, a pair of vertical stub shafts carried by the carriage and each having an eccentric journal portion, edging rolls j ournaled on the journal ortions of the stub shafts, means for securing simultaneous and opposite rotary movements of the stub shafts to cause the edging rolls to approach or to recede relatively to each other, a clamping bar cooperating with ends of the stub shafts extending above the edging rolls, and means cooperatin with the clamping bar whereby the stub sha s may be clamped in positions of adjustment.

20. The combination, with a mill stand having main rolls rotatable about horizontal axes, a rest bar carried by the stand at the discharge side of the'main rolls and extending substantially parallel to the axes of the latter, a carriage movable along the rest bar, a pair of vertical stub shafts carried by the carriage and each having an eccentric journal portion, edging rolls journaled on the journal portions of the stub shafts, means for securing simultaneous and opposite rotary movements of the stub shafts to cause the edging rolls to approach or to recede rela-- tively to each other, a clamping bar cooperating with ends of the stub shafts extending above the edging rolls, means cooperating with the clamping bar for clamping the stub shafts in positions of adjustment, abutment means carried by the stand and disposed rearwardly of the edging rolls, and strut means disposed between the abutment means and said clamping bar.

21. The combination, with a mill stand, of a carriage capable of lateral movement relativel to the stand, stub shafts carried by the stan and having eccentric journal portions,

tions, means for securing simultaneous and opposite rotary movements of the stub shafts in order that the edging rolls ma be adjusted toward and from each other, a ar engaging about ends of the stub shafts extendingoutwardly of the edging rolls, clamping means cooperating with the bar in order that the stub shafts may be clamped in fixed positions of adjustment, stripping members having the rearmost ends thereof supported by the carriage and the foremost ends thereof tapered for cooperation with the main rolls of the stand, a lever fulcrumed on the clamping bar, means for connecting one end of the lever to one of the stripping members, and biasing means cooperating with the lever to cause the connected stripping member to normally tend to move in a given direction.

22. The combination, with a mill stand, of

a carriage capable of lateral movement relative to the stand, stub shafts carried by the carriage and having eccentric journal portions, edging rolls journaled on the journal portions, Worm gears carried by the stub shafts, a worm wheel carried by the carriage and meshing with said worm gears, and means for turning the worm wheel, whereby the stub shafts may be turned in opposite di-, rections in order to cause the edging rolls to approach or to recede with respect to each other.

23. The combination, with a mill stand having main rolls, of a rest bar secured to the stand at the discharge side of the main rolls and extending substantially parallel to the axes of the latter, a carriage, guide means between the rest bar and the carriage,whereby the lattermay move in a path parallel to the axes of the main rolls, a pair of spaced stub shafts carried by the carriage and having eccentric journal portions, edging rolls journaled on the journal ortions, worm gears carried by the stub shafts, a worm wheel carried by the carriage, disposed between the worm gears, and meshing with the latter, and means for turning the worm wheel in order that the stub shafts may be rotated simultane ously in opposite directions to cause the edging rolls to approach or to recede from each other. 1

24. The combination, with a mill stand having main rolls rotatable about horizontal edging rolls journaled' 'on the journal poraxes, of a rest bar secured to the stand at the discharge side of the main rolls and extending substantially parallel to the axes of the tions, edging rolls on the 'ournal portions,

' between the worm gears, and meshing with the latter, said rest bar having a transverse slot therein, and a shaft connected to the worm wheel and extending through the slot for turning the worm wheel in order that the edging rolls may be caused to approach or to recede with respect to each other.

25. The combination, with a mill stand having main rolls rotatable about horizontal axes, of a rest bar secured to the stand at the dischar e side of the main rolls and extending substantially parallel to the axes of the main rolls, said rest bar having lower and upper guide means and the lower guide means being disposed adjacent to the main rolls, a carriage having guide means for cooperation with the guide means of the rest bar, a pair of vertically disposed stub shafts carried by the carriage and having eccentric journal portions, edging rolls on the journal portions, worm gears connected to the stub shafts, a worm wheel carried by the carriage, disposed between the worm gears, and meshing with the latter, said rest bar having a transverse slot therein, a removable shaft for engagement with the Worm wheel and extending through the slot, whereby the Worm wheel may be turned to operate the worm gears in order to cause the edging rolls to approach orto recede from each other, and releasable locking means for normally holding the shaft engaged with the worm wheel and capable of being released in order that said shaft may be removed.

26. The combination, with a mill stand, of a rest bar carried by the stand, a carriage movable along the rest bar, stub shafts carried by the carriage and having eccentric journal portions, edging rolls journaled on the eccentric journal portions, worm gears carried by the stub shafts, a worm wheel carried by the carriage, arranged between the worm gears and meshing with the latter, a detachable shaft for engagement with the worm wheel, whereby the latter may be turned in order to adjust the edging rolls, and means for maintaining the worm wheel in position when the shaft is detached.

27. The combination, with a mill stand, of a carriage capable of lateral movement relative to the stand, a pair of parallel stub shafts journaled in the carriage and having eccentric journal portions, edging rolls fitting the journal portions, worm gears connected to the stub shafts, a worm wheel disposed between and meshing with the worm gears, a detachable operating shaft j ournaled in the carriage and having a portion which engages axially with the worm wheel in order that the latter may be turned to adjust the edging rolls relative to each other, and releasable locking means for holding the opv erating shaft engaged with the worm wheel.-

28. The combination, with a mill stand, of a carriage capable of lateral movement relative to t e stand, a pair of parallel stub shafts journaled in the carriage and having eccentric journal portions, edging rolls carried by the eccentric journal portlons, means for rotating the stub shafts in order to adjust the distance between the edging rolls, and

indicating means carried by the stubshafts in order to indicate the spacial relationship of the edging rolls. I

In testimony whereof I hereunto aflix my signature this 21st dIaIy of December, 1925. ARRY R. GEER.

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