US1899659A - Rolling mill - Google Patents

Description

G. ASBECK ROLLING MILL Feb. 28, 1933.

giled March 18, 1931 4 Sheets-Sheet l Feb. 28, 1933. ASBECK 1,899,659

ROLLING MILL Filed March 18, 1931 4 Sheets-Sheet 2 Feb. 28, 1933. G. ASBECK 1,899,659

ROLLING MILL Filed March 18, 1931 4 Sheets-Sheet 3 98 31 an 1! 82 22 i5 i9 W 1 M W G. ASBECK ROLLING MILL Feb. 28, 1933.

Filed March 18, 1951 4 Sheets-Sheet 4 III Patented Feb. 28, 1933 UNITED STATES PATENT OFFICE GUSTAV ASBECK, OF DUSSELDORF-RATH, GERMANY ROLLING MILL Application filed March 18, 1931, Serial No. 523,521, and. in Germany August 29, 1930.

My invention relates to improvements in rolling mills and more particularly in mills of the type described in my copending application for patent Ser. No. 345,027, filed March 7, 1929. As described in the said application for patent the rolls of the mills and the driving wheels connected with the rolls are connected to a central driving member. For permitting radial adjustment the axes of the rolls are eccentrically mounted in bushings which are adapted to be turned in the frame of the mills or in the lid covering the driving mechanism, and the bearings of the shafts of the rolls are shiftable for axially setting the rolls in position.

The object of the improvements is to provide a mill of this type in which each of the rolls is eccentrically mounted in a member which is rockingly mounted in the frame of the machine, and in which the bushings of the shafts of the rolls are connected to a common operating member and with means for individually setting the rolls in radial direction, the said mechanism being preferably constructed so that the rolls are adapted to be shifted in radial and axial directions.

For the purpose of explaining the invention two examples embodying the same have been shown in the accompanying drawings in which the same reference characters have been used in all the views to indicate corresponding parts. In said drawings Fig. 1 is an elevation of the mill viewed in the direction of the movement of the blanks,

Fig. 2 is a sectional elevation taken on the line 22 of Fig. 1,

Fig. 3 is a detail plan view on an enlarged scale and partly in section on the line 33 of Fig. 2 and showing the mechanism for set ting the rolls in radial and axial position,

Fig. 4 is a detail sectional elevation on an enlarged scale and taken on the line 44 of Fig. 1 and showing the manner of mounting the shaft of one of the rolls in the rockable member,

Fig. 5 is a sectional elevation on an enlarged scale taken on the line 5-5 of Fig. 2,

Fig. 6 is a detail view showing a member for coupling the shaft of the roll with its driving mechanism,

Fig. 7 is a top plan view of Fig. 6,

Fig. 8 is a sectional plan view taken on the line 88 of Fig. 6,

Fig. 9 is an elevation similar to the one illustrated in Fig. 1 and showing a modification,

Fig. 10 is a sectional elevation taken on the line 1010 of Fig. 9,

Fig. 11 is a detail sectional elevation showing the mechanism for setting the rolls in position,

Fig. 12 is a sectional plan view taken on the line 12-12 of Fig. 11, and

Fig. 13 is a sectional plan view on an enlarged scale taken on the line 1313 of Fig.

9 and showing the mechanism for setting the rolls in radial direction.

In the example shown in Figs. 1 to 8 the rolling mill comprises a frame 20 having the usual axial tubular member 21 through which the blank is passed. The said frame is made integral with three cases 22 having their axes disposed radially of the frame and providing bearings for the driving mechanisms of rollers 23. To the frame an annular bearing member 24 is secured, which bearing member is made integral with arms 25 fixed to the frame 20 by means of screw bolts 26. The frame and the bearing member 24 are made integral respectively with three pairs of arms 27 and 28 formed each with two semi-cylindrical bearing shells 30 and 31 in which the rolls 23 are mounted. In each pair of the bearing shells 30, 31 hubs 32 and 33 of a U- shaped block 34 are rockingly mounted, which block is adapted to be set in the desired position by mechanism to-be describedhereinafter. In the hubs 32, 33 bushings 35 and 36 are eccentrically mounted, and in the said bushings a shaft 37 is rotatably mounted to which the roll 23 is secured.

- The bores of the hubs 32 and 33 are located so that by rocking the blocks 34 the rolls 23 are set in position towards and away from each other and radially of the axis of the tubular member 21. For this purpose the blocks 34 are made integral with studs 38 on which spherical heads 39 are mounted, the

said heads engaging in cam slots 40 made in a circular disk 41 mounted in an annular recess of the bearing member 24 and held in position in said recess by means of a ring 42. When turning the disk 41 the heads 39 are shifted in their cam slots 40, and thereby the blocks 34 are rocked so that the eccentrically mounted shafts 37 are moved towards or away from each other.

The disk 41 is formed with teeth 43 which are engaged by a worm 44 mounted on the bearing member 24 and adapted to be rotated by means of a handle 45 secured to the worm shaft 46. Thus, all the rolls can be simultaneously and uniformly set in radial direction and in the same sense by operating the handle 45.

For permitting individual radial adjustment of the rolls '23 the heads 39 are eccentrically mounted on the studs 38, and they are adapted to be turned thereon for rocking the blocks 34 so as to set the rolls 23 in radial direction. As shown in Fig. 3 the head 39 is made integral with a hand wheel 47 and with a flange 48 formed with jaws 49 adapted for engagement with corresponding jaws formed on the block 34. Normally the said jaws are held in coupling engagement with each other by means of a spring 50 bearing on a shoulder 51 of a tubular member 52 secured to the head 39 and extending into a bore of the stud 38 and the block 34, the said spring bearing with its opposite end on a shoulder 5-1 of the stud 38. By retracting the head 39 in opposition to the spring 50 the jaws 49 are brought out of engagement with each other, so that the head 39 can be turned by means of the hand wheel 47. When releasing the hand wheel 47 the jaws 49 are brought into coupling engagement by the spring 50.

For shifting each roller in axial direction the following mechanism is provided:

On the bushing 35 a bushing 57 is mounted which is formed at its end with external screw-threads 58 screwing in an internally screw-threaded ring 59 confined in a recess 56 of the hub 32 and held in position therein by means of a ring 55. The bushing 35 is held in position relatively to the shaft 37 by means of the hub of the roll 23 and a ring 60 fitted on the square end 61 of the shaft 37 and held in position thereon by means of a nut 62. The bushing 57 is axially shiftable within the bore of the hub 32, and rotary movement is prevented by means of a feather key 62a. Thus when turning the internally screwthreaded ring 59 in one or the other direction the bushings 57 and 35 and thereby the shaft 37 are shifted in axial direction. The ring 59 is formed with external teeth 63 engaged by a worm 64 secured to or made integral with a shaft 65 mounted in the bore 53 of the block 34 and extending through the tubular member 52 outwardly. To the outer end of the shaft 65 a hand wheel 66 is secured. Displacement of the shaft 65 is prevented l1, tep bearing comprising a collar 67 secur to .he shaft and anti-friction bearings 68. Thus by turning the shaft 65 by means of the said hand wheel the ring 59 is rotated for shifting the shaft 37 and the roll 23 carried thereby in axial direction.

The bearing member 24 is made integral with two arms 70 carrying rollers 71 by means of which it is slidably supported on rods 72 secured to the frame 20. Thereby the bearing member 24 and the rollers 23 can be readily dismounted, for which purpose the shafts 37 are first disconnected from their driving mechanisms in the manner to be described hereinafter, the screws 26 are unscrewed, and the bearing member 24 and the rolls are shifted on the rods 72 and away from the frame 20. After the bearing member has thus been removed from the frame it is further removed by means of a suitable hoisting machine, an eye 73 being for this purpose secured to the bearing member.

The mechanisms for driving the rolls are shown in Fig. 5 to Fig. 8. All the rolls are driven from a bevel gear wheel 75 rotatably mounted on the frame 20 and engaging in bevel gear wheels 76 one for each of the rolls 23. As is shown in Fig. 5 the bevel gear wheels are mounted in the cases 22 and the lids 19 thereof by means of tubular hubs 78 and 79. Within the hub 79 the head 80 of a shaft 81 is axially shiftable, rotary movement relatively to the hub 79 being prevented by feather keys 82. The head 80 is formed with a cylindrical transverse hole having the flat top end 83 of an intermediate shaft 84 mounted therein by means of segmental shells 85. The bottom end of the intermediate shaft 84 is connected with the top end of the shaft 37 by means of a coupling member comprising a disk-shaped top part 86 connected with the bottom part of the shaft 84 by claws 87 and a flat part 88 engaging between segmental shells 89 embedded in a cylindrical bore 90 made in the head 91 of the shaft 37. The flat portion 88 extends with its bottom part into a bore 92 of the shaft 37 in which a coiled spring 93 is located which acts on the flat portion 88 and tends to force the same upwardly and with its claws into coupling engagement with the claws provided at the bottom end of the shaft 84, the upward movement of the disk 86 and the flat portion 88 being prevented by a shoulder 94 provided on a sleeve 95 secured. to the head 91.

At its top end the shaft 81 is guided in an axial bore of an externally screw-threaded block 97 screwil'ig in a bushing 98 fitted in the bore of the hub 18 of the lid 19. The top end of the shaft 81 extends into a recess 99 of the block 97 which recess is closed by a screw plug 100. The shaft 81 is held between the bottom of the recess 99 and the plug 100 by means of an anti-friction step bearing 101. The block 97 is made integral with a hand wheel 102 adapted to be locked by a spring-pressed plug 103. By turning the block 97 by means of the hand wheel 102 the shafts 81 and 84 are adapted to be shifted in axial direction and into and out of coupling engagement with the disk 86 of the coupling member 86, 88. Before the rolls are removed from the frame of the mill in the manner described above the shaft 37 is first dis nnected from the intermediate shaft 8ft. ilItQl' the rolls have again been mounted on the frame 20 the shafts 81 and 84 are again moved inwardly by means of the hand wheel 102. Ordinarily the jaws of the coupling members 84 and 86 will bear 011 each other with their end faces. But when the mill is started they will be shifted relatively to one another so that the spring 93 shifts the same into coupling engagement.

In the modification shown in Figs. 9 to 13 the mill comprises a frame composed of two sections 110 connected with each other and each carrying cases 111 having the shafts 113 of the rolls 112 mounted therein. As shown the said shaft is mounted in two bearings 114 and 115. The bearing 115 which is adjacent to the roll is eccentrically mounted in a bushing 116, and the bearing 114 is mounted in a screw-threaded block 117 made integral with a hand wheel 118. By turning the block 117 by means of the hand wheel 118 the shaft and the roll are shifted in axial direction, and by turning the bushing 116 the inner end of the shaft 113 is shifted in transverse direction for setting the rolls towards and away from each other. The bushing 116 is provided at its circumference with teeth 125 forming a cylindrical rack and engaged by circumferential teeth 126 provided on a spindle 127 mounted in the case 111. At one end the said shaft 127 screws in a bushing 128, which is lockedagainst rotary movement by a pin 132 screwing in a bore of the case 111 and engaging in a groove of the said bushing.

' To the opposite end of the spindle 127 a pinion 129 is secured, and the pinions of all the rolls are in mesh with a toothed ring 130 mounted in a recess 131 of the frame 110. Thus when one of the spindles 127 is rotated by means of a key placed on the square end thereof all the pinions 129 and the spindles 127 connected therewith are simultaneously rotated by means of the toothed ring 130, so that the bushings 116 of all the rolls are rotated in unison for uniformly moving the rolls 112 towards and away from one another.

The rolls are adapted to be individually moved towards and away from one another by means of a bushing 133 screwing on exter nal screw-threads of the bushing 128 and held in position axially of the spindle 127 by means of a disk 134 engaging in a circumferential groove of the bushing 133. Thus, when turning the bushing 133 the bushing 128 and the spindle 127 are shifted in axial direction and such movement is transmitted by the circumferential teeth 126 to the bushing 116. When thus shifting the spindle 127 the pinion 129 is shifted in axial direction relatively to the toothed ring 130. But the said ring is not rotated, so that the rotary movement of the spindle is not transmitted to the inner bearings of the other rolls.

The rolls 112 are driven from a gear wheel 119 through the intermediary of a bevel gear wheel 120 secured to a tubular hub 121 mounted in a ring 122 fitted in the case 111 and in a head 124 secured to the case, and the hub 121 is connected with the shaft 113 by means of a yielding coupling device 142.

As is shown in 9 the frame 110, 110 is supported on a base 136 and a shaft 137 mounted in elevated blocks 138 of the base, and the whole frame is adapted to be rocked about the said shaft 137 from the position shown in Fig. 9 in full lines into the position shown in broken lines, and that the rolls can readily be mounted or dismounted and examined. In the construction shown in Fig. 9 the shaft 137 is a driving shaft, and it has a gear wheel 139 secured thereto, which is in mesh with a gear wheel 140 connected with the bevel gear wheels 119. As appears from Fig. 10 the frame is provided with two sets of rolls 112 and their driving mechanisms.

I claim:

1. A rolling mill, comprising a plurality of cooperating rolls arranged to move relatively to and away from each other, rockingly mounted bearing blocks one for each of said rolls for adj ustably moving the rollers bilaterally of each other and each comprising bearing members one on each side of the roll and having said rolls eccentrically mounted therein, and means common to all of said blocks for rocking the same in directions for setting said rolls towards and away from one another.

2. A rolling mill, comprising a plurality of cooperating rolls, rockingly mounted hearing blocks having said rolls eccentrically mounted therein, trunnions on said bearing blocks, a rotary disk formed with cam slots engaged by said trunnions, and means for rocking said disk.

A rolling mill, comprising a plurality of cooperating rolls, rockingly mounted hearing blocks having said rolls eccentrically mounted therein, trunnions on said bearing blocks, spherical heads on said trunnions, a rotary disk formed with cam slots engaged by said spherical heads, and means for rocking said disk.

4. A rolling mill, comprising a plurality of cooperating rolls, rockingly mounted bea 1'- ing blocks having said rolls eccentrically mounted therein, trunnions on said bearing blocks, heads eccentrically mounted on said trunnions, means for turning said heads on said trunnions and fixing the same in different positions, and means for rocking said disk.

5. A rolling mill, comprising a frame, a plurality of rolls, bearing blocks having hubs rockingly mounted in said frame and each having the shaft of one of the said rolls eccentrically mounted therein, trunnions on said blocks, a disk formed with cam slots engaged by said trunnions, means for turning said disk, bushings for said shafts axially shiftable and non-rotatable in said hubs, toothed rings screwing on said bushings and rotatable and non-shiftable in the hubs thereof, worms engaging said toothed rings and having their shafts located in bores of said blocks and trunnions, and means for turning said worms.

6. A rolling mill, comprising a main frame, a subsidiary frame removably secured to said main frame, a plurality of rolls mounted on said main and subsidiary frames, bearing blocks rockingly mounted on said main and subsidiary frames and having said rolls eccentrically mounted therein, mechanism for rocking said bearing members in unison, and driving means for said rolls.

7. A rolling mill, comprising a main frame, parallel rails projecting from said main frame, a subsidiary frame removably secured to said main frame, rolls connected with said subsidiary frame and supported on said rails, a plurality of rolls mounted on said main and subsidiary frames, bearing blocks rockingly mounted on said main and subsidiary frames and having said rolls eecentrically mounted therein, and mechanism for rocking said bearing blocks in unison, and driving means for said rolls.

8. A rolling mill, comprising a main frame, a subsidiary frame removably secured to said main frame, a plurality of rolls mounted on said main and subsidiary frames, bearing blocks rockingly mounted on said main and subsidiary frames and having said rolls eccentrically mounted therein, mechanism for rocking said bearing blocks in unison, and driving means for said rolls, said driving means comprising an universal joint and coupling means for connecting said driving means and rolls.

9. A rolling mill, comprising a main frame, a subsidiary frame removably secured to said main frame, a plurality of rolls mounted on said main and subsidiary frames, bearing members rockingly mounted on said main and subsidiary frames and having said rolls eccentrically mounted therein, and driving mechanism for said rolls, said driving mechanism comprising an universal joint and coupling means for connecting said driving means and rolls, and springs tending to throw said coupling means into coupling engagement with each other.

10. A rolling mill, comprising a plurality of cooperating rolls, shafts having said rolls mounted at their adjacent ends, bearings for said rolls comprising bearing members having said shafts eccentrically mounted therein and located at the adjacent ends of said shafts, and yieldingly mounted bearings at the remote ends of said shafts, and means for turning said bearing members in unison for setting said rolls towards and away from one another.

11. A rolling mill, comprising a plurality of cooperating rolls, shafts having said rolls mounted at their adjacent ends, bearings for said rolls comprising bearing members having said shafts eccentrically mounted therein and located at the adjacent ends of said shafts, and yieldingly mounted bearings at the remote ends of said shafts, means for turning said bearing members in unison for setting said rolls towards and away from one another, and means for individually shifting said shafts and rolls in axial direction.

12. A rolling mill, comprising a plurality of cooperating rolls, shafts having said rolls mounted at their adjacent ends, bearings for said rolls comprising housings, bushings in sad housings adjacent to said rolls in which said shafts are eccentrically mounted, and yielding bearing members at the remote ends of said shafts, and bearing blocks con nected with said shafts and having the same rotatably mounted therein andjscrewing in said housings for axially shifting said rolls and shafts, and means for simultaneously ro tating said bushings.

13. A rolling mill, comprising a plurality of cooperating rolls, shafts having said rolls mounted at their adjacent ends, bearings for said rolls comprising housings, bushings in said housings adjacent to said rolls in which said shafts are eccentrically mounted, yielding bearing members at the remote ends of said shafts, bearing blocks connected with said shafts and having the same rotatably mounted therein and screwing in said housings for axially shifting said rolls and shafts, said bushings being formed with circumferential teeth, racks engaging said teeth, and means for shifting said racks in axial direction.

14. A rolling mill, comprising a plurality of cooperating rolls, shafts having said rolls mounted at their adjacent ends, bearings for said rolls comprising housings, bushings in said housings adjacent to said rolls in which said shafts are eccentrically mounted, yielding bearing members at the remote ends of said shafts, bearing blocks connected with said shafts and having the same rotatably mounted therein and screwing in said housings for axially shifting said rolls and shafts, said bushings being formed with circumferential teeth, cylindrical racks engaging said teeth and formed with screwthreads screwing in said housings, and means for simultaneously screwing said racks in their housings.

15. A rolling mill, comprising a plurality of cooperating rolls, shafts having said rolls mounted at their adjacent ends, bearings for said rolls comprising housings, bushings in said housings adjacent to said rolls in which said shafts are eccentrically mounted, yielding bearing members at the remote ends of said shafts, bearing blocks connected with said shafts and having the same rotatably mounted therein and screwing in said housing for axially shifting said rolls and shafts, said bushings being formed with circumferential teeth, cylindrical racks engaging said teeth and formed with screwt-hreads screwing in said housings, pinions connected with said racks, and a common gear wheel in engagement with said pinions.

16. A rolling mill, comprising a base, a frame pivotally mounted thereon, a plurality of cooperating rolls mounted on said frame, bushings in connect-ion with said rolls and means for simultaneously turning said bushings for setting said rolls towards and away from one another.

17. A rolling mill, comprising a base, a frame, a plurality of cooperating rolls mounted on said frame, and driving mechanism for said rolls comprising a driving shaft mounted on said base and gearing means in connection with said shaft, said shaft having said frame rockingly mounted thereon.

18. A rolling mill comprising a frame, radially disposed cases on said frame, shafts rotatably mounted in said casings, rolls mounted on the inner ends of said shafts, bearings in which said shafts are mounted, one of said bearings of each shaft comprising a bushing in which said shaft is eccentrically mounted and which is formed With circumferential teeth, a cylindrical rack e11- gaging in said teeth and having a screwthreaded spindle, a bushing in screwing engagement with said screw-threaded spindle and mounted in said casing for being axially shiftable and non-rotatable therein and formed with external screw-threads, a sleeve screwing on said external screw-threads and rotatable in said casings and locked against axial displacement, and a pinion connected with said racks, and a gear wheel meshing with all of said pinions.

19. A rolling mill comprising a frame, a plurality of cooperating rolls bilaterally adjustable relative to each other, bearing blocks in connection with each roll and rockingly mounted on said frame, said rolls being eccentrically mounted in the blocks, trunnions on the bearing blocks, spherical heads on the trunnions, a rotary disk having cam slots connected to said frame, said slots being ensignature.

GUSTAV ASBECK.

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