US2191390A

US2191390A - Rolling angles

Info

Publication number: US2191390A
Application number: US80856A
Authority: US
Inventors: John M Hooper
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-05-20
Filing date: 1936-05-20
Publication date: 1940-02-20
Anticipated expiration: 1957-02-20

Description

" Feb. 20, 1940. J, M, HOOPER v 2,191,390

ROLLING was Filed llay 20, 1936 5 Sheets-Sheet 1 Jaw/v M HOOPEE,

Feb; 20, 1940.

Filed Ma 20, 1936 J. M. HQOPER ROLLING ANGLES 5 Sheets-Sheet 2 Feb. 20, 1940. J. M. Hoot- 5R 110mm moms Filed May 20. 19:56

5 Sheets-Sheet 4 Inventor. JOHN M HOOPEE,

his %'0qw.

Feb. 20, l

J. M. HOOPER 2,191,390

ROLLING ANGLES Filed lay 20. 1956' 5 Sheejs-Sheet s 512w EOLL5 Invenfar: JOHN M floo se,

Patented Feb. 20, 1940. I

UNITED STATES PATENT OFFICE John Hoopen'Clairton, Pa. Application May 20, 1936, Serial No. 80,856

3 Claims.

This invention relates to the rolling of angles.

' one of the objects being to reduce the number of roll changes heretofore necessarywhen angles of similar leg lengths but difiering thicknesses are required. Another object'is to roll angles more accurately to the desired finished dimensions.

. lengths are to be adjusted. The rolls 4 have Other objects may be inferred.

The present invention is characterized by rolling metal to an angle section, adjusting the thickness and leg lengths of this section by separate rolling operations-and rolling this section to produce an angle of the desired finished dimensions. The metal may be rolled by conventional methods excepting that an open leader pass is'used for the purpose of adjusting the angles thickness, no closed leader pass being used and the leg lengths being adjusted by rolling down the toes of the angle as a separate operation. The angle is'then rolled through a finishing pass to bring it go to itsdesired finished dimensions.

Since an open leader pass is used instead of the usual closed one, only the thickness of the angle is adjusted in this pass. This means that angles of various thicknesses but similarleg' lengths may as "be produced without 1 involving roll changes. Since the lengths are adjusted by rolling down the toes of the angle as a separate operation, accurately dimensioned legs are possible. The accompanying drawings illustrate various 30 means for accomplishing what has been described, the figures being as follows: .1

Figure 1 is a plan of.a mill or machine for adjusting the leg lengths of angles.

Figure 2 is a partially sectioned end elevation 5' of this apparatus.

Figures 3 through 8 illustrate a number of pos-' sible modifications which may be made in the roll elements of the apparatus illustrated by Figures l and 2.

Figure 9 schematically illustrates a mill with which the apparatus is combined.

More specifically, Figures land 2 illustrate a mill or machine embodying a frame I which journals a horizontal roll 2 driven through gears .55 3 and which is grooved to fit the ,apex and outsides of the legs of an angle. Rolls 4 are jour naled in mounts 5 which are themselves carried by the frame I in an adjustable manner. The axes of the rolls 4 are at right angles to the '50 respective angle contacting surfaces of the groove I 'in the roll '2 and are permanently guided in a. vertical plane which intersects the axis of the r0112, adjustmentof the rolls 4 being limited to movement toward and away from the roll 2 in right angular directions. These adjustments are obtained through a number of screws 6,"the operation of which moves the mounts 5 in an obvious manner. I

A guide 1 extends horizontally between the three rolls and presents a guiding surface that 6 fits theinsides of the angle sections whose leg flanges 4 which function to provides surfaces which shape the toes of an angle passing through the rolls.

The roll 2 provides angular surfaces 2 against 'which the flat surfaces of the rolls 4 ride, the groove 2 of the roll 2, the guide I and the flanges 4 and adjacent portions of the rolls 4 providing What appears to be a-closed pass. As a matter 15 of fact, however, it has been found that angles passing through the apparatus very seldom contact the guide I, this functioning primarily as a safety feature. l I Figure 3 shows how somewhat the same result maybe accomplished by tworolls, a grooved roll 8 being used in conjunction with a second grooved roll 9, the roll 8 supporting the outsides oi. an angles legs and the roll 9 providing surfaces which bear againstthe toes of an angle. Figure 4 is the same excepting that two rolls III are substitute'd for the roll 9 and each of these rolls is grooved as at Hi to impart a predetermined shape to the toes of an angle. Figure 5 shows how two upper rolls ll andtwo lower rolls i2 may be used to size the legs of'an angle. It will .be noted that the axes of the rolls in the embodiment shown by Figures 3' and 4 are parallel whereas the axes of the rolls in the'. embodiment shown by Figure 5 are each at right angles to one another.

Figure 6 shows the roll 2 which was illustrated by Figures 1 and 2, the rolls 4 being substituted by rolls l3 which each provide a series of grooves of differing thicknesses and which are shaped to 40 encompass the complete toe portions of an angle. Figure '1 shows the rolls 4 substituted by rolls H which are each provided with a single groove like one of those shown by Figure6 but which is ad justable by the insertion of rings 15 of varying thicknesses, these rings being retained in recesses formed in the rolls l4 and providing, in each instance, one side of the toe-shaping grooves.

Figure 8 shows an upper roll it that is'grooved as is the roll 2 but which is further recessed as I .at H to provideclearance adjacent the outsides of an [angle adjacent-its toes. The toes are worked by rolls l8 which are fundamentally the same as the rolls 4. x

The rather large number of modifications are invention and the unfamiliarity of structural rollers with any design other than those embodying parallel or vertical rolls. The apparatus shown by Figures 1 and-2 is known to work successfully, but each of the various modifications has certain advantages which may appeal to different individuals.

A conventional structural mill for rolling" angles is schematically illustrated by Figure 9.

It consists of.a roughing stand [9, an edging stand 20, an intermediate stand 2| and a finishing stand 22. The roughing, intermediate and finishing stands are in train while the edging stand is in tandem with the roughing stand.

Broken lines and arrows show the passage of the work through the various stands;

Although the schematic illustration shows this millas being conventional, in the mill of this invention no closed'leader pass is used. As has been previously described, the leader pass is open.

In operation; a bloom of billet'is roughed into a fiat sectionin the roughing stand l9; It passes through the edging stand on edge and. its width is roughly regulated. Entering the intermediate stand it is worked to an angle, the leader pass of this stand being such as to cause the work to leave with slightly larger dimensions than is ultimately desired.

The apparatus illustrated by Figures 1 and 2' is positioned so that the angle passes through it after it has left the leader pass and beforeit enters the finishing stand 22. Its position is schematically illustrated 'as being-close .to the finishing pass, althoughits exact positioning is immaterial. At this point the toes of the angle 1 are rolled down so as to adjust the leg length to that desired, the desired thickness then being obtained by passing through the finishing stand 22. Consideration of the lengthening effect of the finishing operation must. be included. in calculating the leg length adjustment. The leader pass being an open one, it is possible to vary the'thicknesses of difierentorders.

4 2,191,390 illustrated because of the newness ofthe present of angles through relatively large limits providing the leg lengths are to be approximately the same. The leg lengths are then obtained as an entirely separate operation, instead of simultaneously with the adjustment of the angles thicknesses as is the case when the customary leader pass is used.

It is possible to shape the leader pass so that the angles leave it with outwardly curved legs. This may be an advantage in case the angles tend to buckle when being passed through the apparatus illustrated by Figures 1 and 2. It is not,

however, necessary. I claim: I 1. A'str'uctural mill for rolling angles, including the combination of roughing, edging, intermediate and finishing roll stands, all providing open passes, and means for rolling down only the toes of angles, said means being arranged so that work going from what would ordinarily be the closed leader pass of the-intermediate stand to the finishing stand may be passed through said means prior to its passage through the finishing stand.

2. A mill or machine for adjusting the leg lengths of angles, including the combination of means providing revolving surfaces adapted to work against at least major portions of the outsides of the legs of an angle without reducing their thickness, and means porviding revolving surfaces adapted to work against the toes of said angle so as to roll them down.

3. A mill or machine for adjusting the leg lengths of angles, including the combination of means providing revolving surfaces adapted to 'work against at least major portions of the out-