US628099A - Flanging-machine. - Google Patents

Description

F. L. KOLLBERG. FLANGING MAcHlNE.

Patented luly 4, |899.

(Application led Dec. 15, 1898.)

4 Sheets-Sheet (No Model.)

Patented `July 4, |899.

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(Application Bled Dec. 15, 1898.)

4 Sheets-Sheet 2,

(No Model.)

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SEEE-5255s,

F. L. KoLLBEnG. FLANGING MACHINE.

(Application lred Dec. 15, 1898.) (Nu Model.)

MISE 1m: Nonms Farms co., moouwo.. wAsmNG'rcN. u. c.

4 Sheets-Sheet 3,

No'. 528,099. Patntgd July 4, |899.

F. L. KoLLBEnG.

`FLANNG MACHINE.

y (Application led Dec. 15, 1898.) I (N0 UOBL) 4 Sheets-Sheet 4.

m: Noam: rnzks co., mow-nwo. wAsHmoToN. n. c.

UNI-TED.' STATES PATENT rricn.

FREDRICK L. KOLLBERG, OF CHICAGO, ILLINOIS;

FLANGINGfMACl-HN.

SPECIFICATION forming' part of Letters Patent No. 628,099, dated July 4, 1899'.

Application filed December l5, 1898. Serial No. 699,323. (No model.)

To @ZZ whom, t may corwerrt: v

Be it known that I, FREDRICK L. KoLLBEnG, a citizen of the United States, residing at Chi'- cago, in the county of Cook and State of Illinois, have invented certain new and useful ImprovementsinFlangingMachines,ofwhich the following is a specification.

My invention relates to improvements in Hanging-machines, and particularly those designed for forming llanges upon boiler-heads, and has among its primary objects the giving to such a machine the capability of flanging any size and thickness of boiler-heads from the maximum to the` minimum, which sizes in practice vary, substantially, from about two feet to ten feet in diameter.

Another object is to enable and facilitate the easy insertion and centering of the plate to be flanged in the machine, the sustaining of the same in proper position during the flanging operation, and the removal of the same from the machine after the flange is formed.

A further object is to have the plate on which the ilange is to be formed held iixed during the flanging operation as against all movement except that of free axial rotation while the flange-forming devices gradually move from a plane coincident with that ofthe plate to one substantially at right angles thereto in the act of forming the flange upon the plate.

These and such other objects as may here-V inafter appear are attained by the devices illustrated in the accompanying drawings, in which- Figure l represents a central longitudinal section through a flanging-machine embodying my invention, showing the parts in position preparatory to commencing the formation of a iiange. Fig. 2 representsahorizontal section on the line 2 2 of Fig. 1. Fig. 3 represents a view similar to Fig. l, but showing the parts in the position they assume when the formation of the llange is completed. Fig. 4 represents a transverse vertical section on the line 4 4 of Fig. 2, but With the parts in the position represented in Fig. 3; and Fig. 5 represents an enlarged detail section through the plate-holding devices.

Similar letters of reference indicate the same parts in the several figures of the drawmgs.

Referring by letterf to the accompanying drawings, A indicates the bed of the machine.

B B are upright frames 'resting upon the bed and constituting the support for the table C of the machine.

D indicates a holding-frame, between which frame and the table is placed the circular plate or disk E, upon which thev ilange is to be formed. V F F indicate the Hanging-rollers, carried by an oscillating frame G, which is guided and supported in a suitable housing H, resting upon the bed of the machine.

To facilitate comprehension of the details of my invention, I will now describe the general operation thereof, which consists, first, in placing the plate to be flanged upon the table of the machine, next centering the same thereon, then moving the table until the edge 'of the plate extends in between the tlangingrollers a distance corresponding to the width of the flange to be formed thereon, and then clamping the plate firmly at its center, so as to allow free axial rotation thereof, but no other movement upon the table, the centering devices being backed off slightly to permit of this free rotation of the plate. vThe Hanging-rollers are now brought together, so as'to firmly clamp the edge of the plate, and are. then started to rotate. While continuously rotating, the axis of rotation of the Hanging-rollers is gradually changed from a position at right angles to the axis of the plate being flanged to one substantially parallel with the axis of said plate, this being accomplished through the medium of the oscillating frame, in which the Hanging-rollers are journaled, the driving mechanism being such that rotary action of the Hanging-rolls,

and consequently of the plate being ilanged,

ward end. To the upper end of each screw IOO is secured a worin-wheel K, with which mesh worms L, mounted upon a cross-shaft M, suitably journaled on the holding frame and adapted to be operated by a hand-wheel N upon one end thereof, whereby the screws J may be operatedV so as to take hold of or release the threaded sockets in the table. It will of course be understood that the screws J, while free to rotate in the arms D, have no endwise movement therein; but I have not deemed it necessary to herein illustrate in detail this common mechanical expedient or any particular bearings for supporting the shaft M, as such details can be readily supplied by any mechanic. It will thus be seen that when it is desired to place a plate upon or remove it from the table the shaft M will be rotated until the screws J release the sockets in the table C, when the holdingframe may be swung up on its pivot I a sufcient distance to give free space for the removal or insertion of the plate. After the plate is placed upon the table the frame may be allowed to drop back, resting at its center upon the plate, as will be described in detail fartheron.

To center the plate upon the table, I provide a common means consisting of three or more screw-threaded shafts O, suitably journaled, as against endwise movement, in bearings depending from the table C, upon each of which shafts is mounted a finger P, having a screw-threaded eye Q working on the shaft O, the fingers projecting up through radial slots in the table a suitable distance to engage the edges of the plate upon the table. These shafts O are geared to rotate in unison, so as to cause the fingers P to simultaneously approach and recede from the center of the table by means of beveled pinions R, secured on the inner ends thereof, meshing with a common master-gear S, suitably journaled upon a bearing provided at the center of the table, so that when one of said shafts is rotated, as by the crank-arm T at the front end of the table, the other shafts will be simultaneously rotated, and all of the fingers will be accordingly adjusted toward and away from the center, depending on the direction in which the shaft is rotated. Hence it will be seen that after the plate is placed upon the table between the fingers P it will be shifted by said fingers and exactly centered upon the table in position to be flanged, and it is then firmly clamped in this centered position by the holding-frame, which will be now locked to the table in the manner previously described.

Of course the table cannot revolve, and while the table must afford a support for the plate during the Hanging operation good results cannot be obtained by dependence being placed upon the centering devices for holding the plate during the fianging operation. I therefore provide for the free axial rotation of the plate during the clamping operation by having at the center of the table the clamping mechanism illustrated in detail in Fig. 5.

This consists of a pair of eylindric jaws U and V, loosely journaled in the holding-frame and table, respectively, at the center thereof. The

'lower jaw V in the table preferably works in a suitable bearing W, rigidly secured to the under side of the table and of slightly-greater internal diameter than the diameter of the jaw, and between the bottom of this bearing and the jaw I interpose a series of balls X to afford an antifriction-bearing at this point, the jaw being provided with a depending stud V', working in an extension of the bearing W, so as to steady the jaw in its upright position, this extension of the bearing VV'preferably forming the journal upon which the master-gear S before mentioned finds a bearing. The jaw V preferably extends a slight distance above the plane of the upper surface of the table, as illustrated in Fig. 5, so as to insure the free gripping of the plate between the jaws. As the plates are generally heated before being fianged, the jaws will of course become heated, especially when the larger sizes of plates are being flanged, and to keep said jaws cold water may be caused to circulate through the bearing W bymeans of a supply-pipe Y, opening into one side thereof, the water escaping through the small ducts J in the bottom of the bearing. This also provides for obviating a greater objection-to wit, the deposit of scale around the jaw upon the table, which would choke and interfere with the operation thereof, and to get rid of these I provide that the jaw shall fit in the bearing YV so loosely that there will be an ample circumferential space around the jaw for the scales to fall into the bearing, from whence they will be washed by the circulation of the water. The upper jaw U finds its bearing in the center casting D' of the plate-holder in a socket depending from the under side thereof, between which socket and the upper part of the jaw is arranged a series of rollers U', affording an antifriction-bearing between these parts as against the clamping strain upon the jaws. This jaw is also provided with a steadyingstud or spindle, which is preferably tubular, as shown, affording a passage for water to a chamber in thel jaw from the center casting D', which is preferably formed in the shape of a box to afford a reservoir for this purpose, to which water is supplied through the pipe \V' and drained therefrom through the pipe Y'. lVith the plate now clamped, but free to rotate between the table and the holdingframe, the table is next advanced toward the Hanging-rollers, so as to extend therebetween a distance corresponding to the width of the flange to be formed. This is done by manipulating the hand-wheels a, secured to the ends of the screw-shafts b, (more clearly shown in Figs. 2 and 4,) as suitably journaled at their ends, respectively, in the upright frames B as against endwise movement. In guideways formed in the frames B slide guide-blocks c, having sockets therein'to receive pivot-pins d, rigidly secured to and projecting from thc ICO IIO

IZO

side edges at the under side of the table near the front end thereof, so that as the screwsf are rotated the guide-blocks c will travel back and forth in the guideways in the frames B, carrying the table with them. As will be understood, the table is not supported centrally by the pivot d thereof, this being for the purpose of enabling the dropping of the rear side of the table next to the Hanging-rollers after the iiange is formed and when it is desired to remove the anged plate from the machine. Therefore to maintain the table in a level position I provide the vertical screws e in each rear corner thereof, having hand-wheels f, by means of which the screws may be manipulated. These screws rest at their lower ends upon the bed of the machine and screw back and forth through the table, so that when turned up to their limit the table is brought to a level, resting upon these screws and its pivots; but whenever the screws are reversed or screwed up through the table the rear side of the table will sink correspondingly, swinging upon its pivots. Obviously this mode of supporting the table affords no obstruction to the endwise movement of the table in adjusting it to bring the plate properly between the hanging-rollers as Well as the greater adjustment thereof toward and away from the flanging-rollers to accommodate varions-sized plates.

The Hanging-rollers should be adjustable toward and away from one another, as well to accommodate differing thicknesses of plates as to properly grip the plates during the flanging operation. To this end I provide the lower driving-roller with fixed bearings for its shaft that serve to bring the upper edge of the periphery thereof to a plane with the upper surface of the table when the rollers are in their normal horizontal position previous to the commencement of the formation of the Hange,

while the upper roller is provided with movable or adjustable bearings g by means of screw-threaded stems 77., working through threaded sleeves bearing in the oscillating frame G and carrying on their upper ends worm-vvheels 1I, meshing wi th a worm Zc,mount ed upon a shaft Z, also journaled in the frame VG and provided with asuitable crank or hand wheel fm, exteriorly of the housing H. Hence whenever the worm-shaft is rotated the bearings g, carrying the upper roller F, will positively1 and bodily move said roller toward and away from the lower-.fixed roller, and this will be true no matter what position the oscillating frame G may be in, for the parts will be operative in any position of the said frame. For the purpose of shifting the oscillating frame back and forth from a horizontal to a vertical position, and vice versa, it being understood that said frame is firmly held and guided between the side walls of the housing H in any suitable manner, such as by ribs and grooves or shoulder-and-groove connection, I provide thereon a toothed segment n, struck on the arc of a circle having for its center a point substantially at the outer ends of the meeting faces of the Hanging-rollers, upon which arc the guideways for the frame G in the housing H are also struck, as the center above referred to is the center of oscillation for said frame. With this segmental rack engages a pinion o, journaled in thc housing and driven in any suitable manner.`

As the mechanism is very heavy and the changing of the position of the Hanging-rollers is depended upon to bend up the flange upon the plate being operated upon, I prefer to operate the shaft upon which the pinion ois mounted by a small engine p, resting upon the bed of the machine and properly geared with said shaft, as illustrated more clearly in Figs. 2 and 4, although I do not desire to limit myself to any particular means for shifting or oscillating t-he frame G.

During the operation of bending the plate the hanging-rollers must rotate continuously in order to bring all parts of the edge of the plate successively between the rollers as they are bent up,the position of the Hanging-rollers being changed with greater or less rapidity, according to the thickness of the flange being bent; but obviously in all cases the change of position must be slow andthe platebeing operated upon caused to revolve upon its center with its edge between the hanging-rollers a sufficient number of times to render the bending thereof so gradual as not to cause the cracking of the metal at the bend.

To cause the continuous rotation of the Hanging-rollers in all positions thereof from their normal horizontal position at the coinmencing of the bending operation, as illustrated in Fig. l, to their final vertical position, as illustrated in Fig. 3, I provide a short shaft q, loosely journaled at its ends in the oscillating frame G,and upon said shaft, near each end thereof, I loosely mount a pair of beveled gears r, meshing with a corresponding beveled gear s, rigidly secured to the shaft of the lower Hanging-roller. At the opposite side of said shaft there also meshes with said beveled gears r r another beveled gear z5, fixed upon one end of a shaft u, the end of said shaft being loosely journaled in a bearing u, formed at the center of the shaft q. The end of the shaft u is prevented from having end- Wise movement in the said bearing by the collars w thereon at each side of said bearing.

In point of fact this construction amounts to` the bearing i; being trunnioned in the oscil lating frame G, sov as to rock thereon, while the gears 0^ r are loosely mounted upon the trunnions of the bearing and communicate power from the beveled geart on the shaft u to the drivinggear s' upon the stationary Hanging-roller.

The shaft u may be driven in any suitable manner; but as it must move with the oscillating frame G the shaft must have endwise as wellas rotary movement, and to this end I provide a trunnioned rocking bearing for the other end of the shaft, in which the shaft IOO IIO

IZO

is free to have both axial rotation and longitudinal movement, while upon the shaft I mount a beveled gear y, having a splined connection with said shaft, so that while the shaft is free to have endwise movement through said gear the gear will rotate with the shaft in all positions thereof. To this gear power may be transmitted in any suitable manner from another gear, as @mounted concentrically with the trunnions of the rocking bearing x, about which of course the gear y must also oscillate, according to the changing positions of the shaft. It will thus be seen that this driving-shaft is both rotary and extensible or telescopic with relation to its end bearings, between which bearings the distance constant-ly changes with the changing position of the shaft, due to the oscillations of the frame G, carrying the fiangingrollers.

As part of the means for imparting a continuous rotation tothe rollers the gear z may constitute the power or master gear, and the power for driving the same may be directly applied thereto through'an ordinary pulley (not shown) mounted upon the shaft or sleeve carrying said gear in a manner so obvious as not to require either further description or illustration herein. Instead, however, of having the shaft of the gear ,e the power-shaft of the machine I prefer to have the same driven by a gear-wheel z', mounted upon the hub thereof, or a sleeve extending from said hub and loosely journaled upon the trunnion of the rocking bearing se, which gear meshes with a pinion z2, keyed upon a power-shaft z3, to which power is applied by means ofthe pulley 24 also keyed thereon. Hence it will be seen that however the power is applied there is a means, forming a permanent connection between the stationary power-shaft and the rollers, for imparting a continuous rotation thereto, regardless of the position of the rollers.

After the ange is formed and the parts are in the position illustrated in Fig. 3 of course the Hanging-rollers cannot be returned to 4 their normal horizontal positions until the plate is removed, and hence the worm 7a is now manipulated so as to release the flange from the grip of the hanging-rollers, and the locking-screws c are manipulated so as to allow the table to tilt downwardly at its rear side upon its pivot d, which withdraws the flange of the plate from between the hangingrollers. The locking-screws J for the holdtrated and described to be preferable to anyr other now known to me and to satisfactorily serve all of the intended purposes of the machine, both as to strength and durability of construction, as well as econony in construction and operation and the facility with which the product of the machine may be operated upon thereby.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

l. In a Hanging-machine, the combination with a pair of Hanging-rollers, means for oscillating said rollers from a horizontal to a vertical position and vice versa and means for continuously rotating said rollers, of a longitudinally-adjustable pivoted table, means for centering and holding a plate thereon, means for locking the same in a horizontal plane and means for tilting said table upon its pivots to a position oblique to the horizontal so as to allow the forward edge thereof, adjacent to the rollers, to drop away from the rollers and thereby withdraw the flange from between the rollers when the latter are in a vertical position, substantially as described.

2. In a Hanging-machine, the combination witha longitudinally-adj ustable pivoted table and a lock therefor, of a pair of Hangingrollers, means for oscillating said rollers from a horizontal to a vertical position and vice versa and means for continuously rotating said rollers, substantially as described.

In a Hanging-machine, the combination with a longitudinally-adjustable pivoted table and a lock therefor, a holding-frame and a pair of horizontally-rotatable gripping-jaws at the centers of said frame and table, respectivel y, of a pair of Hanging-rollers, means for oscillating said rollers from a horizontal to a vertical position and vice versa and means for continuously rotating said rollers, substantially as described.

4. In a Hanging-machine, the combination with a longitudinally-adjustable pivoted table and a lock therefor, means for centering a plate thereon, a holding-frame and a pair of horizontally-rotatable gripping-jaws at the centers of said frame and table,respeetively,of a pair of hanging-rollers, means for oscillating said rollers from a horizontal to a vertical position and Vice Versa and means for continuously rotating said rollers, substantially as described.

5. In a Hanging-machine, the combination with a table, of a pair of Hanging-rollers, an oscillating frame in which said rollers are journaled, an oscillatory shaft loosely journaled at one end in said frame, a gear connection between said shaft and one of the Hanging-rollers and means for continuously rotating said shaft,substantially as described.

6. In a Hanging-machine, the combination with a table, of a pair of langing-rollers, an

oscillating frame in which said rollers are journaled, an oscillatory shaft loosely journaled at one end in said frame, a gear con- IOO IIC

nection between said shaft and one of the anging-rollers, a rocking bearing for the other end of said shaft in which the said shaft has both endwise and rotary movement, a gear-Wheel loosely splined upon said shaft and through which the shaft has endwise movement and means for driving said gear, substantially as described.

7. In a Hanging-machine, the combination with a table, a pair-of lianging-rollers, an oscillating frame in which said rollers are journaled, a segmental rack attached to said frame and a driving-pinion engaging said rack, of an oscillatory shaft loosely journaled at one end in said frame, a gear connection between said shaft and one of the hanging-rollers and means for continuously rotating said shaft, substantially as described.

8. In a Hanging-machine, the combination with a table, a pair of iianging-rollers, an oscillating frame in which said rollers are journaled, a segmental rack attached to said frame and a driving-pinion engaging said rack, of an oscillatory shaft loosely journaled at one end in said frame, a gear connection between said shaft and one of the Hanging-rollers, a rocking bearing for the other end of said shaft in which the said shaft has both endwise and rotary movement, a gear-wheel loosely splined upon said shaft and through which the shaft has endwise movement and means for driving said gear, substantially as described.

9. In a hanging-machine, the combination with a bed-frame, a table, guide-blocks slidinglongitudinallyin said frame and affording a pivotal support for said table, means for adjustin g said'guide-blocks,lockscreWs for said table, a holding-frame pivoted to said table, and opposing horizontally-rotatable grippingjaws at the centers of said frame and table, respectively, of a pair of anging rollers, means for oscillating said rollers and for continuously rotating the same, substantially as described.

10. In a flanging-machine, the combination with a bed-frame, a table, guide-blocks sliding longitudinally in said frame and aiording a pivotal support for said table, means for adjusting said guide-blocks and means for centering'and holding a plate on said table, of a pair of Hanging-rollers, means for oscillating said rollers and for continuously rotating the same, substantially as described.

11. In a an gin g-machine, the combination with a table and a holding-frame, of a pair of l1 orizontally-rotatable opposing gripping-jaws at the centers of said frame and table, means for maintaining the table-jaw in a bath of Water and means for maintaining a circulation of Water through the frame-jaw, substantially as described.

l2. In a Hanging-machine, the combination With a table, a holding-frame and a pair of horizontally-rotatable gripping-jaws at the centers of said table and frame, of a hollow bearing for the table-jaw having Water inlet and outlet ducts, a center casting in the frame constitutingareservoir and having open communication with the interior of the frame-jaw and Water supply and discharge pipes for said reservoir, substantially as described.

13. In a ilanging-machine, the combination With a longitudinally-adjustable pivoted table and a lock therefor, a holding-framepivoted to said table and a pair of horizontallyrotatable gripping-jaws at the centers of said table and frame, respectively, the frame-jaw bein g hollow and in open communication With a reservoir on said frame, of means for supplying a circulation of Water through said reservoir and roller and means for submerging the table-jaw in a circulating bath of Water, substantially as described.

FREDRICK L. KOLLBERG.

IVitnesses:

F. H. DRURY, J. N. RAYMOND.

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