US939167A - Universal rolling-mill. - Google Patents

Description

Patented Nov. 2, 1909.

6 BHEETS-SHEET 1.

WITNESSES: I N VEN TOR ATTORNEY.

H. SACK, DEGD.

' A. SACK, ADMINISTEATRIX.

UNIVERSAL ROLLING MILL.

APPLICATION FILED 00129, 1906. 939 1 67, Patented Nov. 2, 1909.

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ATTORNEY.'

H. SACK, DEGD.

A. SACK, ADMINISTEATBIX.

UNIVERSAL ROLLING MILL.

APPLICATION FILED 00T.29,1906.

Patented Nov. 2, 1909.

F i g. 5

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WITNESSES:

H. SACK, DEOD.

A. SACK, ADMINISTRATRIX.

UNIVERSAL ROLLING MILL.

APPLICATION FILED 0012.29, 1906.

Patented Nov. 2, 1909 5 SHEETSSHEET 4.

' ATTORNEY.

H. SACK, DEGD.

' A. SACK, ADMINISTBATRIX.

UNIVERSAL ROLLING MILL.

APPLICATION FILED 00129, 1906.

939, 1 67, Patented Nov. 2, 1909.

5 SHBBTSSHEET 5.

WI TNESSES I N VEN TOR vfiyv dwfi,

ATTORNEY.

r to make such successive passes, either the rolls being mounted in appropriate bearing UNITED, STATES PATENT onnioa.

HUGO SACK, OF DUSSELDORF, GERMANY; ADELHEID SACK ADMINISTRATRIX OF.

HUGO SACK, DECEASED.

UNIVERSAL ROLLING-MILL.

Specification of Letters Patent. Patented N 0V. 2,1909.

I Application filed October 29, 1906. Serial No. 341,142.

To all whom it may concern: rolls were also moved toward each other at Be it known that I, HUGO SACK, a citizen the proper rates of speed. In the present of the German Empire, residing at Dusselj invention similar devices are used for setting dorf, ltheinish Prussia, Germany, have inthe vertical rolls, but the means for adjustvented certain new and useful lmprove I ing the setting plates, and all the parts, are ments in Universal Rolling-Mills, of which I rendered much more accessible. Means are the following is a specification. provided whereby horizontal rolls varying This invention relates to improvements in I greatly in the distance between the. necks rolling mills of the class in which four rolls can be used interchangeably without the neare situated in the same vertical plane for 1 cessity of changing the distance between the the purpose of producing the same elongar mill stands or housings. And, in general, tion of the metal in every part of the cross 3 the mill is simpler and more easily operated. section of the bar which is being rolled. In the accompanying drawings, Figure 1 The object of the present invention is, in is a vertical transverse section of the mill; general, to render such rolling mills more Fig. 2 is a vertical longitudinal section simple and convenient in operation. In thereof; Fig. 3 is a horizontal section; Fig. these mills, as a rule, the horizontal rolls 4 is a front view ofthe mill, certain parts are positively driven, while the vertical rolls being shown in section; Fig. 5 is a detail are rotated only by frictional contact with front elevation of the setting plates, showing the bar which is passed between the four the same, by full and dotted lines, in two rolls. In so called universal mills of this positions; Fig. 6 is a detail front View showclass a number of successive passes are made ing a modification in the means j through or between the rolls, and, in order ing the setting plates.

upper horizontal roll must be lowered, or the lower horizontal roll must be raised. It is indeed possible to move both of the horizontal rolls simultaneously, but, in practice, in most cases, only one of the horizontal rolls is so moved. It is necessary, when thus setting the horizontal rolls, to move the vertical rolls toward each other at the same time, and in such a manner that the ratios of approaches of the two pairs of rolls maintain always a constant ratio to each other in order to produce the above mentioned elongation of the metal. This constant ratio is determined by the relative thicknesses of the flanges and of the web or the girders, and since, as a rule, the flanges of H-girders are one and one-half times as thick as the web, it follows that the ratio of approach of the vertical rolls must be three times as great as that of the horizontal rolls. Means for insuring said constant ratio between. the rates of approaches were disclosed in my United States Patent dated July 8,1890, No. 431,623, which showed a construction and arrangement of setting plates having upper and lower inclined faces, the vertical foundation plates, to which are bolted the mill stands or housings 2 connected with each other by the spacing bars 3, and the dis tance bolts i, and formed with thecentral vertical guideways 5. Into said guideways extend the reduced ends 6 of the upper and lower blocks 7, 8, of the horizontal rolls 9,10. The inner or opposing sides of sa d blocks are channel shaped, as clearly seen in 1g. 2, to receive the bearings 11 for said horlzontal rolls, said bearings being adjustable longr tudinally of the blocks to correspond with the locations of the necks of the rolls, and being pressed tight against said necks by screws 12, (Figs. 2 and 4:) screwed through the ends of said channel shaped portions of the blocks and outside their reduced ends. The bearings 13 to support the shaft of the upper horizontal roll are supported on suitable shoulders 14 on the mill stands, and are adjusted by means of wedge-shaped keys 15. The bearings 16 to support the shaft of the In the present instance I have shown the 7 upper roll as stationary and the lower roll as movable toward the upper roll as the thick ness of the bar diminishes, but it will be understood that the invention applies equally well to a mill in which the lower roll is stationary and the upper roll is movable toward the lower. The upper block 7 issupboxes having projections in the form of wedges engag ng said setting plates, so that,

by the relative ap roach of the settin p ates, the bearing oxes for the vertica Referring to the drawings, 1 indicate lower roll are carried on the lower block 8.

ported against upward movement by powerful cotters 17 held in slots 18 in the upper portions of the housings. The lower edges of the cotters enter notches 19 in the upper side of the block and thus hold said block against longitudinal movement. The lower block 8 is supported on suitable bearings 20 'upon the two inclined faces of a double the block.

The vertical rolls 24 are supported in bearing boxes 25, the ends of which also extend into the 'guideways 5, as shown in Figs. 1 and 3, and are guided both vertically and horizontally therein. Each box has formed integral therewith front and rear wings 26,-

wedge-shaped, having upper and lower inclined wedges or setting rails 27 sloping toward each other outward, as clearly shown in Fig. 4. These wings have secured thereto by the bolts 28 the curved side guide bars 29, which guide the metal between the rolls. They have also secured thereto the links 30 connected to levers 31 operated by hydraulic cylinders 32 secured upon the housings. By means of these cylinders said bearin boxes can be moved outward, or away irom each other.

The wedge-shaped wings are contained between settin plates 33, which lie entirely between the mi 1 stands and which have edges meeting the edges or setting rails 27 and correspondingly sloped. Two of the plates 33 are carried by each of the blocks 7, 8, at the front and rear sides thereof. The setting plates are held to the blocks by bolts 34 pass ing through slots 35 in the plates, and the setting platesot the upper block are also attached thereto by hanger bolts 36. Said setting plates are adjusted vertically with reference to said blocks by means of counterwedges 37, movable to and from each other by means of right and left screws 38. However, in Fig. 6, another means of adjustment is shown, namely, the screws 39, by means of which even a non-parallel adjustment can be obtained, which would be necessary if the necks of the horizontal rolls should wear unequally at the two ends.

The construction being as above described, the operation is as follows. A pass having been made between the rolls, and it being necessary to move said rolls closer together for a succeeding pass, the pressure is re moved from the hydraulic cylinders 32, so I as to, allow the bearing boxes for the vertical rolls to move inward or toward each other. Then power is applied to the wedge 21, by a hydraulic cylinder, or other means, to advance it longitudinally. The lower block and the lower horizontal roll are thereby raised. The lower setting plates 33 are also raised, and, being brought nearer to the upper setting plates, the opposing inclined edges of these plates act as wedges upon the intervening wedge-shaped wings" 26, forcing them inward, as they are nowfree from the restraint of the hydraulic cylinders, and moving toward each'other the vertical rolls in the boxes 25. The ratio of the rates of approaches of the horizontal and vertical rolls depends upon the angle of inclination of the edges of the wings and setting plates. In the present instance this inclination is shown as that proper for producing a rate of approach of the vertical rolls hearings to that of the horizontal rolls a ratio of 3 to 1, that being the ratio corresponding with a ratio of thickness of the flange to that of the web 1% to 1, which is the standard ratio for H girders. When the. rolls have been moved sufficiently near forthe next pass, the hydraulic cylinders are again set in operation and the bearingboxes 25 are retracted so that their wings 26 bear tight against the edges of the setting plates. The action of the setting plates 33 upon the wings 26 is illustrated in detail in Fig. 5, which shows these parts in full lines in one position and in dotted lines in another position. The rate of approach of the vertical rolls is seen to be three times that of the horizontal rolls. This ratio being proper for all H beams, the same setting plates and bearing boxes can be used for H beams of all sizes in cross section. For H beams unusually high, or long ed to produce a preparatory form of. H-

beam, which, when suiiiciently elongated, is squared up by one or more passes through a special set of finishing rolls. The advantage of this method of rolling is that thereby'H-beams can be provided without any taper of the flanges. However, I by no means confine myself to this shape of roll.

From the above description and comparison of the drawings, it will be readily seen how convenient and accessible for adjustment are the setting plates and the various adjusting devices, such as the screws 12 for the adjustment of the chocks 11, the counter wedges 37 and the right and left screws 38..

' By means of this arrangement both the verhave been made, the relative positions of the rolls are maintained proper for the reduction of the bar as the wedge 21, or the usual top screw gear, as the case may be, is op erated for the purpose of moving the rolls together, or retracting them.

An important feature of this construction is that the blocks 7, 8, are made long enough to admit the longest horizontal rolls between the necks that may be necessary, the

position-of said horizontal rolls being fixed by adjusting the bearings 11. Thus the mill stands do not have to be moved to permit of horizontal rolls varying greatly in length between the necks being used interchangeably.

It is to be understood that'the invention can be used equally well for mills where only one pass is made through the rolls, as for so called universal mills where a number of successive passes are made through, or between, the same rolls.

I claim 1. In a rolling mill, a horizontal roll, and a vertically-adjusted member carrying longitudinally-adjustable bearings for each end of said roll, said member and bearings arranged to prevent movement of the roll away from the pass.

2. In a rolling mill, a pair of mill stands having vertical guide-ways, horizontal rolls, and a vertically-adjustable member. having ends entering said guide-ways and carryin longitudinally-adjustable bearings for eac end of one horizontal roll.

3. In a rolling mill, a horizontal roll, a vertical roll, a vertically-adjustable member carrying bearings for each end of said horizontal roll, and means, directly actuated by said vertically-adjustable member, so constructed and arranged that vertical movement of said member laterally shifts said vertical roll.

4:. In a rolling mill a horizontal roll, a vertical roll, a vertically-adjustable member carrying longitudinally-adjustable bearings for each n of said horizontal roll, and means, directly actuated by said verticallyadjustable member, so constructed and arranged that vertical movement of said member laterally shifts said vertical roll.

5. In a rolling mill, a stand having a vertical guide-way, a horizontal roll, a vertical roll, and separate bearing members for said rolls having portions engaging said guideway and independently'movable therein.

6. A universal rolling mill, comprising a pair of stands having vertical guide-ways, a pair of horizontal rolls, a pair of vertical rolls, members extending between said stands and into said ways, each having two bearings for a horizontal roll, one of said members being vertically adjustable, and separate vertically and horizontally adjustable members directly guided by said ways and each having bearings for one vertical roll.

7. In a rolling mill, a pair of stands having vertical guideways, a pair of horizontal rolls, a pair of vertical rolls, a verticallymovable member having bearings for each end of a horizontal roll, said member extending between the stands and into their guide-ways, and means directly actuated by the vertical movement of said member to laterally shift said vertical rolls.

8. In a rollin mill, the combination of mill stands, horlzontal rolls, a support for the upper roll extending entirely across between the mill stands, and cotters for holding said support against upward movement, the upper parts of the stands having slots to receive said "cotters, substantially as described.

9. In a rolling mill, the combination of mill stands, horizontal rolls, a support for the upper roll extending entirely across between the mill stands, and cotters for holding said support a ainst upward movement, the upper parts 0 the stands having slots to receive said cotters, the upper side of said support bein also formed with notches to receive the ower edges of the cotters to hold the support against longitudinal movement, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HUGO SACK.

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