US603102A - Rolling-mill - Google Patents

Description

L t e e h S w e e h S 2 L m M e DN n ..Tu m V a d 0 M 0 w No. 603,102. Pat ntedApr. 26, 1898.

WITMESSES= (No Model.) 2 Sheets-Sheet 2'. V. E. EDWARDS.

. ROLLING MILL.

No. 603,102. Patented Apr. 26, 1898.

I I THE- WQZFV I By HIS ATTORNEY ,ing-mill embodying my invention.

UNITED STATES PATENT fission.

VICTOR E. EDYVARDS, OF WORCESTER, MASSACHUSETTS.

ROLLING-MILL.

SPECIFICATION forming part of Letters Patent No. 603,102, dated April 26, 1898.

Application filed February 18, 1897. Serial No. 624,001. (No model.)

To ctZZ whom it may concern.-

Be it known that I, VIoroR E. EDWARDS, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Rolling-Mills, of which the following is a specification, reference being bad to the accompanying drawings, forming a part of the same, in which- Figure 1 represents a plan view of a rod Fig. 2 represents an end view of one pair of rolls comprised in that portion of the mill known as the roughing-mill. Fig. 3 is a vertical sectional View on line 3 3, Fig. 2. Fig. 4 is a sectional view on line 4 4, Fig. 3; and Fig. 5 is a plan view of the adjustable stops for limiting the movement of the device for throwing the rolls of the ropghing-mill into and out of action.

Similar letters and numerals refer to similar parts in the different figures.

My present inventionrelates to that class of rolling-mills which comprise a roughingmill and two or more finishing-mills with conducting guideways between the finishingmills and the roughing-mill whereby billets are delivered from the roughing-mill to either of the finishing-mills; and the object of my invention is to provide means whereby finished products of difierent dimensions can be produced by the continuous operation of the same mill, and this object is attained by means of the construction and arrangement as hereinafter described, and pointed out in the annexed claims.

In Fig. 1 I have represented a diagrammatic view of a rolling-mill embodying my invention, in which A denotes a roughing-mill comprising a series of rolls arranged in pairs to act successively upon a billet, and B one of the finishing-mills having rolls adapted to produce a finished product of certain dimensions, and O a second finishing-mill having rolls adapted to produce a product of different dimensions from the finishing -mill B. Means are employed, such as are now in common use, for conveying the billets from the roughing-mill A to the finishing-mills B and 0, these means comprising in the present instance a curved guideway D, leading from the roughing-mill A to the finishing-mill B,

and a guideway E and feed-table F, by which the billets are transferred from the roughing-mill A to the finishing-mill G.

The rolls of the roughing-mill A are pro vided with two sets of circumferential grooves G G in alinement with the conducting-guideways D and E. The circumferential grooves G G are reduced in size at each successive pair of rolls in order to accomplish the reduction of the billet as it passes through each pair of rolls of the roughing-mill, and the ultimate size of the billet as it is delivered from the roughing-mill is determined by the size of the circumferential grooves in the last pair of rolls which act upon the billet.

In Fig. 1 I have represented the roughingmill A as comprising six pair of rolls and numbered consecutively 1, 2, 3, A, 5, and 6, the operation of each successive pair of rolls from 1 to 6 being to reduce the size of the billet and also, if desired, to vary its shape in cross-section.

In Figs. 2 to 5 I have shown one pair of rolls comprised in the roughing-mill A with the apparatus for throwing them into and out of action, as may be desired, and also for varying the reduction of the billet by each pair of rolls.

Referring to Figs. 2 to 5, H H represent the upper and lower rolls of one of the pairs of rolls comprised in the roughing-mill A, supported in the usual manner by housings H and H and driven by shafts H and H which are journaled in housings H and H the remaining pairs of rolls in the roughingmill A being duplicates of the one shown in Figs. 2 and 3, except for the variation in the size of the circumferential grooves G and G.

Supported in the housings H and H are hydraulic cylinders I and 1, containing pistons I and 1 connected together by the cross-heads I and I and the connecting- .rods 1, one of the cylinders and inclosed piston-rods being employed to move the crossheads in one direction and the other cylinder and piston-rod being employed to move them in the opposite direction. The crosshead I is connected by links I with the plate 1 capable of sliding in ways in the housings H and H in a direction parallel with the axes of the rolls H H.

The plate I is provided with an inclined wed e I havin an inclined u er surface I corresponding with the inclined surface 1 'The inclined surface of the wedge I supports the lower box J at the opposite end of the roll H, said box being capable of a vertical movement in ways formed in the housing. The end of the plate 1 is provided with I a flange K, having three holes to receive the L, Fig-1, with the valve-cylinders L.

screws K, Ki'and K Thescrew K is held from longitudinal movement in the flange K by means of check-nuts K, by which the position of the screw K is adjusted inthe flange,

so that when the end of the screw K is brought into contact with the housing it will limit the movement of the sliding plate 1 The screw K is attached at one end to the wedge 1 and is adjustably held from longitudinal movement in the flange K by means of the check-nuts K thereby providing means for adjusting the position of the wedge I on the plate 1 The screw K is attached at one end to the housing and carries upon its opposite end the check-nuts K said check-nuts serving as a stop in the path of the flange K to limit the movement of the sliding plate 1 The hydraulic cylinders, by which the sliding plates 1 are actuated, are connected by pipes The valve-cylinders L are arranged side by side and in close juxtaposition, so that all the valve-levers L can be operated by a single attendant stationed at X.

The speed or travel of the billet between each pair of rolls is determined by the speed of the rolls and also by the reduction in the size of the billet, and as each pair of rolls is driven from a common driving-shaft M by bevel-gears, which give a determinate increase in speed to each succeeding pair of rolls, any variation in the reduction of the billet by the adjustment of the rolls which changes the reduction of the billet must be proportioned to their relative speed as driven by the bevel-gears.

The independent adjustment of each end of the lower rolls of each pair is accomplished by means of the stop-screw K, which limits the movement of the inclined surfaces upon which the lower boxes rest, and by means of the adjusting-screw K which adjusts the wedge 1 relatively to the inclined surface I.

When the lower rolls of the roughing-mill have been adjusted, the operator is stationed at X, and the operation of the mill is as follows: A billet is passed through the line of grooves G and acted upon by all the series of rolls from 1 to 6, delivering the billet to the'finishing-mill B, with the size of the billet determined by the last pair of rolls in the roughing-mill. The second billet is then inserted in the groove G of the first pair of let.

rolls, and one or more pairs of rolls at the opposite end of the roughing-mill areseparated, so that they will not act upon the bil- For example, if rolls 5 and 6 are separated the billet will be delivered from rolls at to the finishing-mill O, and the size of the billet will be determined by rolls 4. Rolls 5 and 6 are then brought intoaction' for the third billet, and so on, each alternate billet being of different dimensions and adapted to be received by a second finishing-mill, producing a different product from the first. If the desired variationcannot be conveniently secured by throwing one or more pairs of rolls out of action, it may be secured as follows: The check-nuts K on the screws K3 are so adjusted as to limit the separation of each pair of rolls and preserve a ratio of reduction by the successive pairs of rolls corresponding to their relative speed, and the operator at X,

. after the passage of the billets through the grooves G, successively moves all the plates 1 to the extent of their motion, as determined by the check-nuts K on the several screws K thereby separating the rolls of each pair, I I

so the succeeding billet in passing the grooves G will'have a larger size in cross-section than the preceding billet. After the billet has passed through the grooves G the plates I are moved back untilstopped by the screws K, bringing the rolls in each pair nearer together. In this manner two sizes of billets will be delivered from the roll 6, one size going to the finishing-mill B and the other size goingto the finishing-mill C.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a rolling-mill, the combination of a series of pairs of rolls arranged to act successively upon a billet, means for the instantaneous separation of the rolls in one or more of said pairs during the operation of the mill and an adjustment-stop whereby the separation of the rolls is predetermined, substantially as described.

2. In a rolling-mill the combination of a series of pairs of rolls arranged to act successively in the reduction of a billet, means for the instantaneous raising or lowering of the lowermost roll in one or more of said pairs of rolls and an adjustable stop whereby the vertical movement of said roll is predetermined, substantially as described. Y

3. In a rolling-mill for rolling billets comprising a series of pairs of rolls arranged to act successively upon the billet, the combination with one or more of said pairs of rolls, of a series of sliding plates provided with inclined surfaces supporting the boxes of the lowermost rolls, means for the individual movement of said sliding plates whereby said lowermost rolls are simultaneously raised or lowered, substantially as described.

4. In a rolling-mill comprising a series of pairs of rolls arranged to act successively upon a billet, the combination with the pairs of rolls, of sliding plates having an inclined surface supporting the boxes atone end of the lowermost rolls in said pairs, wedges supported on said sliding plates and supporting the boxes at the opposite ends of said lowermost rolls, means for the adjustment of said Wedges relatively to said sliding plates, means for the instantaneous movement of said sliding plates whereby said lowermost rolls are raised or lowered, and adjustable stops whereby the sliding movement of said plates is predetermined, substantially as described.

5. In a rolling-mill comprising a series of pairs of rolls arranged to act successively upon a billet, the combination with the lowermost rolls in said pairs of a mechanism for raising or lowering said rolls, a series of hydraulic cylinders connected with said raising and lowering mechanism, valve mechanisms connected with said hydraulic cylinders and placed VICTOR E. EDWARDS.

Witnesses:

Bonus B. FOWLER, HENRY W. FOWLER.

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