US2460164A - Straightening apparatus - Google Patents

Description

. Jam' 25;, 1949. l I' E. E. BRAYsHAw STRAIGHTENING APPARATUS Filed Aug. Iso. v1946 qyshaw .M/wa i HIS A TTORNEY' Jan. 25, i949. E. E. BRAYsHAw 2,450,154

STRAIGHTENING APPARATUS Filed Aug. 30, 1946 2 Sheets-Sheet 2 INVEN TOR.

Patented Jen. 25, 1949 2,4so,14 sraArcn'rENrNe ArrAaA'rUs Ernest E. Brayshaw, Pittsburgh, Pa., signor to Carnegie-Illinois Steel Corporation, a corporation of New Jersey ,Application August 30, 1946, `Sel'litl No. 693,869

2 Claims. (Cl. 153-54) is a longitudinal curve which appears when the section is viewed in plan.

Heretofore a number of .methods have been proposed for removing sweep and/or camber in a section of the type described, but so far as I am aware none of these have been entirely satisfactory. Most frequently sweep in a bar or plate is removed by passing the section through a conventional roller-type straightener; and camber is separately removed by a gag press. This twostep method of straightening is unsatisfactory for the reason that two machines are required, which necessitates rehandling, thereby eliminating all possibility of continuous straight line production. In addition, the operation of the gag press so as to completely remove the camber requires consderable time.

It is among the objects of the present invention to simultaneously remove camber and sweep from metallic sections such as bars, plates, etc.

Another object is the attainment of the foregoing by the use of an apparatus which is simple and inexpensive to install, operate, and maintain.

The invention, then, comprises the features hereinafter described and as particularly pointed out in the claims, the following description and the annexed drawings setting forth in detail certain illustrative embodiments of the invention, these beingindicative of several of the number of ways in .which the principles of the invention may be employed.

In said drawings:

Figure 1 is a side elevation of the apparatus of the present invention;

Figure 2 is a sectional view on the line II-II of Figure 1;

Figure 3 is a view similar to Figure 2, but illustrating a modification;

Figure 4 is an elevational view, partly in section, o f o'ne of the rolls of Figure 2; and

Figure 5 is an elevation, partly in section, of a modified type of roll.

Referring more particularly to the drawings, the numeral 2 designates a horizontal lower frame member which supports a plurality of shafts 3 which project therefrom in an overhanging man- 2 ner and occupy a common horizontal plane. It will be understood by those skilled in the art that the shafts 3 may be supported further inwardly by a frame member in addition to the frame member 2, and that the said shafts are suitably power driven for unitary rotation.

The overhanging portion of each of the shafts 3 is provided with an end 4 of reduced diameter. as shown most clearly in Figure 2.

Counting from the left-hand end of Figure 2, the first, second and fourth of the shafts 3 are each provided with a roll barrel 5 which occupies a. substantial partof its reduced end 4, and at the outer end of the latter there is carried an enlarged disk 6 which, together with the roll barrel, is held in position by means of a nut 8 and lock washer 9.

Referring still to Fig-ure 2, the third of the shafts 3 is provided with a, roll barrel III which on its outer end abuts a washer 9 and extends inwardly to seat against an enlarged disk l2 which occupies the extreme inner position of the reduced end 4 of this shaft. As shown in Figures 2 and 4, the roll barrel I0 is provided with a longitudinally extending keyway I3. Onto the inner end of the roll barrel I0 there is telescoped aseries of disks I4, I5 and I8, whose outer diameters are substantially the same as that of the outer diameter of the enlarged disk I2. Of this series of disks (i. e. I4, I5 and I6) the outer face of the disk I4 directly abuts against the adjacent face of the enlarged disk I2, while the outer face of the disk I8 abuts against an enlarged disk II which likewise telescopes onto the roll barrel l0 and corresponds in shape and size to the enlarged disks 6 on the first, second and fourth rolls, previously described.

The inner faces of the enlarged disks 6 (on the first, second and fourth of the shafts 3) and the outer face of the enlarged disk Il, define the sides of a rolling pass, the remainder of which will shortly be described.

Referring to Figure 4, it will be noted that the enlarged disk I1 is prevented from rotation with the roll barrel l0 by means of a set screw I8, the inner end of which seats in the keyway I3. Thus. the enlarged disk II is longitudinally adjustable throughout the length of the roll barrel I0, and by adding or eliminating disks (of the shape and size of the disks I4, I5 and I6) between it and the inner extremity of the reduced end 4 of the shaft 3 a wide latitude of adjustment is permitted, with the result that the width of the pass may be accurately adjusted without removing the roll barrel II.

In addition, it will be understood that in lieu of the structure shown in Figure 2, the inner disk I2 may be formed integrally with the inner 'end of the roll barrel I0, as shown 1n Figure 4.

Referring to Figure 1, immediately above the frame member 2 there is disposed a horizontal upper frame member, I9 whichfis'similarin construction.' This .frame member I9 supports a plurality of overhanging shafts 20 which occupy a common horizontal plane. n each/of these shafts there is carried a roll barrel. The second, third and fourth of the shafts 20 carry cylindrical roll barrels 2l, while-the first of the shafts 20 carries a roll of modified construction. More specifically, this first or initial roll of modifled construction comprises a cylindrical roll barrel 22 of the same diameter as the roll barrels 2|, but embodying on its outer end a reduced or relieved portion 23 which accommodates the enlarged disk 6 on the first of the lower shafts 3.

The upper shafts 20 maybe supported further inwardly by a Iframe member in addition to the' frame element I9; and means (not shown) are provided for making each of the said shafts 20 vertically adjustable. While the first or initial of the shafts 20 is disposed directly above the corresponding lower shaft 3, the second, third and fourth of the shafts 20 are offset slightly rearwardly of the corresponding lower roll, as shown in Figure 1.

Between the lower and upper frame members 2 and i9, respectively, there is disposed a pair of widely spaced and suitably supported bifurcated arms 25, each of which carries a vertically disposed idle roll 21 which is adapted t'ocontact the inner edge of the section to be straightened, the latter being shown at 29. Preferably a vertical idle roll 21 and its bifurcated supporting arm 25 is` disposed at-both the inlet andoutlet of the straightening apparatus of the invention, and if desired the same -may be employedin one or more opposing pairs, as shown in Figure' 3, whereby the outer edgeof thefsec'tion 29 is also contacted.

In Figure -3 of the drawings there is disclosed a pair of parallel horizontal lower frame members 32 for supporting the -lower shafts, the latter in this case being designated at 33. According to this construction the lower rotary shafts are fully supported in lieu of the outboard relationship shown in Figures 1 and 2. While the detailed construction of the built-up roll. (i. e. roll barrel I0 and associated instrumentalities) is essentially the same as that shown in Figures 2 and 4, two of the said rolls are employed, i. e. one on the second and one on the fourth of the lower shafts 33.

Referring to Figure 5, there is shown a modified built-up roll which takes the form of a roll barrel 40 provided on its inner end with an integrallyformed enlarged disk 42, disks 4l, 45 and 46 being provided between the outer end of the4 roll barrel I0 and the end of the reducedv section 4 of the shaft 3.

In operation, the roll 22 serves as an upper pinch roll to hold the section 29 against the roll barrel 5 of the first of the lower rolls. Then,

the roll barrel 5 of the second lower roll forces the section upwardly and the second of the upper rolls forces it downwardly, thereby imparting to the section a positive sweep. The following rolls are adjusted to remove this sweep as the section continues through the straightening apparatus. For removal of camber in the section 29 it is directed by the entry idle 'roll 21 against the enlarged disks or ollars 9 of the first two bottom rolls, thereby imparting to the section a positive camber.z The -third and fourthibottom rolls and the outlet idle roll 21 are 'so 'adjusted as to remove the camber. v

While I have shown and described certain specii'lc embodiments of the present invention, it will be readily understood by those skilled in the art that I do not wish to be limited exactly thereto, since various modications may be made without departing from the scope of the invention as defined in the appended claims.

I claim:

1. A straightening apparatus for metallic sections comprising a series of power-driven rolls the axes o f which occupy a com1 non planea collar on the irst of saidrolls, a collar on, another of said rolls, said last-named. collar, occupying a different longitudinal'po'sition'on its carrying roll than said first-named collar, whereby there is denedby and between saidcollars the sides of a rolling pass, and aseries of idle rolls the axes of which occupy a plane which is parallel and adjacent the plane of said 'series of power-driven rolls, the first of said series of idle rolls having a reduced diameter portion contacting the periphery of the collar of the first of said power-driven rolls and a main portion spaced fr om'the main portion of the first" of said power-drivenl rolls to'Y form a pinch pass for feeding the sectioninto th'e' straightening apparatus.

2. A straightening apparatus for metallic sections comprising a series of power-driven rolls the axes of which occupy a common plane, a collar on the 'rst of said rolls, a collar on another of said rolls, said last-named collar occupying a different longitudinal position on its carrying roll than said first-named collar, whereby there is defined by and between said collars the sides of a rolling pass, and a series of idle rolls the axes of which occupy a plane which is parallel and adjacent the plane of said series of power-driven rolls, the first of said series of idle rolls having a reduced diameter portion contacting the periphery of the collar of the'rst of said power driven rolls and a main portion spaced from the main portion of the first of said power-driven rolls to form a pinch pass for feeding the section into the straightening apparatus, at least one of said collarsvbeing longitudinally adjustable with l'respect to its carrying roll whereby the width of the rolling pass may be adjusted.

ERNEST E. rtarsmlw;

REFERENCES ori-Ep The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,835,198 Abramsen Dec. 8, 1931` 1,914,975 Nigro I -.L June 20, 1933 1,926,830 Yates Sept. 12, 1933 FOREIGN ra'rEN'rs Number .Country Date 98,121 Switzerland s Mar. 1, 1923

Images