US2191391A

US2191391A - Rolling angles

Info

Publication number: US2191391A
Application number: US163685A
Authority: US
Inventors: John M Hooper
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-05-20
Filing date: 1937-09-13
Publication date: 1940-02-20
Anticipated expiration: 1957-02-20

Description

Feb. 20, 1940. J VM HQOPER I 2,191,391

ROLLING ANGLES Original Filed May 20, 1936 5 Sheets-Sheet 1 JOHN M. HOOPEE,

Feb. 20, 1940. J. M. HOOPER 2, 91,391

ROLLING ANGLES Original Filed May 20, 1956 5 Sheets-Sheet 2 JOHN M HOG/ EE,

J. M. HOOPER I 2,191,391

JOHN M HooPa-e;

J. M. HOOPER ROLLING ANGLES Feb. 20, 1940.

O1'igina1 Filed May 20. 1936 5 Sheets-Sheet 4 JOHN M fi/oaPze-le Feb. 20, 1940. HOQPER I 2,191,391

ROLLING ANGLES ori ina Filed May 20, 1936 5 Sheets-Sheet 5 5/Z/N6 E LLS 17009265021" JOHN M HOOPER,

Patented Feb. 20, 1940 UNITED [STATES PATENT OFFICE I t H 2,191,391' ROLLING ANGLES I John M. Hooper, Torrance, Calif. Original application May 20. 1936, "Serial No.

80,856. Divided and this application September 13, 1937, Serial No. 163,685

1 Claim.

This invention is a division from my copending application entitled Rolling angles, bearing Serial No. 80,856 and filed May 20, l936.- It relates to the rolling of angles, one of the objects being to reduce the number of roll changes heretofore necessary when angles of different leg lengths and thicknesses are required. Another object is to roll angles more accurately to the desired finished dimensions. Other objects may be inferred. The present invention ing 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. lhe metal may be rolled by conventional methods excepting that an open leader pass is used for the purpose of adjusting the angles thick:- ness 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 to its desired 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 and leg lengths may be produced without involving roll changes. Since the leg 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 means for accomplishing what has been described, the figures being as follows:

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 of this apparatus.

Figures- 3 through 8 illustrate a number of possible modifications which may be made in the roll elements of the apparatus illustrated-by Figures 1- and 2.

More specifically, Figures 1 and 2 illustrate a mill or' machine embodying a frame I which v journals a horizontal roll 2 driventhrough gears 3 and which is grooved to fit the apex andoutsides of the legs of an angle. Rolls 4 are journaled 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 respective angle contacting surfaces of the groove in the roll 2 and are permanently guided in a vertical plane which intersects the axis of the is characterized by roll- 7 operation of which moves the mounts 5 in an.

obvious manner.

A guide 1 extends horizontally between the' three rolls and presents a guiding surface that fits the insides of the angle sections Whose leg lengths are to be adjusted. The rolls .4 have which shape the toes of an angle passing through the rolls. o

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 1 dom contact the guide 1., this functioning primarily as a safety feature. Figure 3 shows how somewhat the same re sult may be accomplished by two rolls, a grooved roll 8 being used in conjunction with a second grooved roll 9, the roll 8 supporting the outsides of an angles legs and the roll 9 providing surfaces which bear against the toes of an angle. Figure 4 is the sameexcepting that two rolls ID are substituted for the roll 9 and each of these rolls is grooved'as at Ill to impart apredetermined shape to the toes of an angle. Figure 5 shows how two upper rolls H and two lower rolls l2 may be usedto size the legs of an angle. It willbe 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. I

Figure 6 shows the roll 2 which was illustrated by Figures 1 and 2, the rolls 4 being substituted by rolls I3 which each provide a series of grooves of differing thicknesses and which arev shaped to encompass the complete toe portions of an angle. Figure '7 shows the rolls 4 substituted byrolls l4 which are each provided with a single groovelike one of those shown" by Figure 6 but I which is adjustable by the insertion or" rings 15 of varying thicknesses, these rings being retained in recesses formed in the rolls M and providing, in-each instance, one sideof the toeshaping grooves. I

Figure 8 hows an upperroll it that is grooved as is the roll 2 but which is further recessed as at I! to provide clearance adjacent the outsides of I03 flanges 4* which function to provide surfaces an angle adjacent its toes.

The toes are worked by rolls I8 which are fundamentally the same as the rolls 4.

The rather large number of modifications are illustrated because of the newness of the present 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 l9,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 mill as 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 or billet is roughed into a fiat section in the roughing stand Hi. 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

enters the finishing stand 22. Its position is schematically illustrated as being close to the finishing pass, although its exact positioning is immaterial. At this point the toes of the angle 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 different orders of angles through relatively large limits. 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: v

A method of rolling angles, including rolling metal through a series of roll passes designed to permit production of angles having a range of leg thicknesses and adjusting the leg lengths of the resulting angles by rolling against their edges toward the apexes of the angles while anti-frictionallyholding the apeXes against the angle-edge rolling pressure, by means of angleedge rolling means separate and independent from the angle-apex restraining means necessary to so hold the apexes of the angles.

JOHN M. HOOPER.