US2496395A - Apparatus for grooving rolls - Google Patents

Description

Feb. 7, 1950 v. s. JACKSON APPARATUS FOR GROOVING ROLLS Filed April 29, 1948 2 Sheets-Sheet l N will NH WWll a k, 3 Q m A *m I I q- EU w A H In; 'HI' L p H w W, &

M... 1 HIII....I"1..H 'H N 1 Z X i TORNfK Feb. 7f, 11950 v. s. JACKSON 2,496,395

APPARATUS FOR GROOVING ROLLS Filed April 29, 1948 2 sneets-sheet 2 IIIHI IN V EN TOR. VIRG/L 6T JACKSON.

ATTORNffi Patented Feb. 7, 1950 Virgil s. Jackseifi-Weirton, W. va, assign'or to National Steel Corporation, a corporation of Delaware mutton [fiiril 2'9, 1948, Serial No. 23,885

I Claim.

The present invention relates to improvements in apparatus for cutting grooves in rolling fiilll rolls and more particularly relates to app ara tus' for cutting a plurality of parallel longitudinal grooves in the peripheral surfacepf bloon'iiiig mill rolls. This operation is commonly cane-a ragtime When rolling a steel ingot to form e tiq m, billet, slab, bar, or the like, the blooming rolls receiving the ingot are oftenfv previ'ded" with parallel longitudinal grooves arranged aroun the periphery of the roll Tnes spe ee; relatively shallow grooves are provided to increase the bit of the blooming rolls and to aid in puflli'ig or drawing the ingot into the rolls. These bleom ing mill rolls are very large and heavy and we gh a number of tons, It as bee rthe practice to place the roll on a suitable machine by me ns of a crane and to then cut or machine fewgrooves in the roll, depending one capacity of the cutting macnmezgrne era some other powerful lifting eev ee; is j to turn the heavy roll sufilcintly about tudinal axis to permit the cutting oi tional groove or grooves in flit peiiili al face. These stepsare repeated unnr th entire periphery of the roll as reee ve'a the: desired number of grooves. This procedure is very slow and laborious and requires an enc e'ssjive' a'lnou'nt' of time. It is" common ra'pticetotaiieabbut a to; hours to cut the grooves in a blooming 1-011. In addition; it is" difficult to accurat ely p tion the roll for properly cutting th'seQgijo 'es and if these grooves are not out correctly, the roll will not function properly. I k

Accordingly, it is an object of thefprese 1 vention to provide an improved apparatus for ragging blooming mill rolls. I H v Another object of the present nterme ate provide an improved apparatus ro'r euttlng grooves more accurately in blooming mill rolls" in less time than heretofore required.

Another object of the present invention is to provide an improved apparatuswhich can be readily positioned on a cutting machine for turning a blooming mill'roll to accurately positionthe roll for cutting longitudinal grooves-in its peripheral surface and which can be readily removed from the cutting machine.

A further object of the present invention ye provide an improved powerfactuated p0 able mechanism for indexing a blooming mill r'oil toaccurately and successively positioning for successively cutting aseries'of parallelgiooves' in the peripheral surface of the roll.

2 The present invention provides an improved power-actuated mechanism which can be readily positioned on a suitable cutting machine, such as a planer, for intermittently turning a blooin ing mill roll about its longitudinal axis. The mechanism is portableso that it canine readily moved and positioned and it includes aro'tatably supported member having its center portion shaped to fit over the Wobbler of the blooming roll. The Wobbler engaging member is con nect'ed through a gear train to a motorio'r turning the roll to position the roll for the successive cuts. When using this mechanism, itis possible to reduce the time required for cutting the grooves in a blooming mill roll from the usual 8 to 10 hours to 3 to 1 hours, or less.

These and other objects and advantages will become" more apparent when considering the following detailed description, taken with the accompanying drawings, in which;

lligure l is a side elevational view of apparatus embodying the principles of the present invention;

Figure 2 is a plan view, partially in section, of the apparatus of Figure l; and v Figure 3 is an enlarged sectional view, taken along line 3-3 of Figure 1, in which the bloom; ing mill roll has been omitted to more clearly show the structures of the apparatus.

Referring more particularly to the drawings a' blooming roll It includes a relatively large, work engaging center portion Ii adapted: to roll a steel body, such as an ingot, and reduce it in cross-sectional size to form a bloom. The lolo'oinE-l ing mill roll in also includes roll necks i2 which are adapted to be rotatably mounted in the tear; ings of a roll mill stand, not shown, when in use; At least at one end'of thefroll 8 there is awobbler l 3 which is' an irregularly s'l' aped' portion adapted to fit into a correspondingly shaped opening in a drive gear, not shown. When cutting grooves in blooming mill outne' roll is transferred y a some m ns) su h. a a a t he mechanisnrior cutting the grooves, As is shown in the drawings, the roll I 0 isrotatably supported me pair of V blocks [4 and I5 mountedon a bed. 16' of a planer. The bed I6 is slidably supported for movement back and forth along the ways IT of" the planer or other cutting machine. The d1- rectionof movement of bed lii'andthe r011 Hl'is' parallel with the longitudlnalaxis rt of the ion. A ca n e a; e ali ting on n-j. pert-arm position for cutting a groove 2| in' the peripheral surface of the roll I when'the roll is' moved longitudinally to effect relative movement of the tool I9 along the surface of the roll.

An indexing mechanism 23 for turning the roll I about its longitudinal axis I is removably mounted on the planer bed I6; The mechanism 23 includes a supporting or base plate 24 on which are mounted a pair of spaced side plates 25. The plates 25 are connected and held together by a plurality of bolts 26 and are spaced apart by the spacers 21, one of which is provided for each bolt 26. A cover 29 extends about the side plates 25 for preventing the entrance of dirt and damage to the mechanism. The mechanism 23 includes a relatively large wrench member 30 having an outer ring gear 32 extending entirely around its periphery and between the plates and includes spaced, longitudinally extending bearing shoulders 33 disposed on opposite sides of the ring gear 32 which rotatably support the wrench member in the side plates 25. The wrench member 30 is also provided with a central opening 34 shaped to fit the Wobbler I3 so that when the member 30 is rotated, as hereinafter described, the roll is also rotated.

The power-actuated driving means for rotating member 30 and roll I0 includes a motor 35 mounted on channels 35 and connected to a gear reducer 37 for driving gear 38 which meshes with a gear 39 mounted on and connected to a short shaft 40. A second gear 4| is also mounted on and connected to the shaft 40 in position to engage the ring gear 32. The shaft 40 is rotatably mounted in the side plates 25; Rotation of motor 35 rotates gears 38, 39, and 4| to turn the member 30 and the roll II]. Bearing metal is provided at 42 to form bearing surfaces in side plates 25 for the shoulders 33 of wrench'member 30 to reduce friction and the force required to turn the roll I0. This bearing metal may be separate rings or may be deposited by welding.

The planer bed I6 may be moved back and forth along the ways I1 in any suitable manner. As shown in the drawings, a rack 44 is mounted on the under side of bed I6. A reversible, powerdriven gear means, not shown, meshing with rack 44, and of the type generally used for moving large planer beds, may be provided for moving the bed I6.

The mechanism 23 includes a plate 45 which can be readily removed from or placed in position on the bed I6.

' When the blooming mill roll I0 is to be grooved,

the V blocks I4 and I5 are mounted on the planer bed I6. The roll I0 is then lifted onto the planer 60 bed I6 by means of a suitable crane and the roll necks I2 placed in the notches of the V blocks. The V blocks are so positioned that the longitudinal axis I8 of the supported roll is parallel to the direction of the movement of the planer bed I5 along the ways I1. After the roll is in position, the indexing unit 23 is placed on the planer bed and the wrench member 30 fitted over Wobbler I3. If necessary, the motor 36 may be energized to turn the wrench member 30 so that the Wobbler receiving recess 34 will be correctly aligned with the Wobbler I3. If desirable, the crane used to lift the roll I0 into position may be used to hold at least the Wobbler end of the roll in a slightly elevated position to facilitate fitting the wrench 4 member 30 onto the Wobbler I3. After the indexing unit 23 is in position, the roll and indexing unit may be lowered so that the roll necks I2 fit into the V blocks I4 and I5. When the indexing 5 unit is in position, it may be clamped or fastened 10 then adjusted on the support 20, if necessary, so

(as to be in position to cut a groove 2I. The

planer bed is then moved along the ways I I so as to move the roll past the cutting tool. One or a plurality of strokes may be required to cut a groove in the surface of the roll. After a groove has been completed, the motor 36 is energized through suitable control means to turn the gears 38, 39;"and 4I and rotate the wrench member 30 and the roll through a few degrees about the longitudinal axis of the roll. By means of the indexing unit 23, the roll I0 is readily and quickly turned to position the roll for the necessary cut. The bed I6 is then again moved along the ways Il so as to effect relative movement of the tool I9,

I claim:

An indexing unit for turning a blooming mill roll about'its longitudinal axis to position the roll for cutting a plurality of parallel longitudinal grooves in the roll surface, said roll having an irregularly shaped Wobbler on at least one end and said'unit comprising, in combination, support means including stationary longitudinally spaced apart plates, a bearing on each plate, said bearings presenting longitudinally spaced apart bearing surfaces each disposed in a plane normal to the longitudinal axis of the roll, a wrench member having a Wobbler receiving recess extending longitudinally through the member with the recess being shaped to fit over the Wobbler and have the -Wobbler extend therethrough, a ring gear extending about the external periphery of the wrench member and extending outwardly between the spaced plates, said wrench member having longitudinally extending bearing shoulders disposed on opposite sides of the ring gear and said bearing shoulders being rotatably mounted onsaid bearing surfaces, gear means including a gear rotatably mounted on and between said plates and meshing with said-ring gear, and a drive motor connected to the gear means for actuating the gears and rotating the wrench member and the roll.

VIRGIL S. JACKSON.

REFERENCES CITED UNITED STATES PATENTS 7 Number Name Date 259,043 Reynolds June 6, 1882 271,380 Tucker Jan. 30, 1883 1,036,105 Hartness Aug. 20,1912 2,137,462 Romaine Nov. 22. 1938 v

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