US2333238A - Shafting die - Google Patents

Description

Nov. 2, 1943. A. FlNNlE SHAFTING DIE Filed May'28', 1942 (Ittomeg Patented Nov. 2, 1943 UNITED s'raras PATENT OFFICE snmma ma Alexander Flnnie, Youngstown, Ohio Application May 2a, 1942, Serial No. 445,103

1 Claim.

This invention relates to a die and more particularly to a die adapted to be placed in usable position immediately adjacent the last stands of a shafting mill, bar rolling mill or the like.

The principal object of the invention is the provision of a die adapted to be used in combination with a shafting or bar rolling mill, which die will finish the shaft or bar being rolled so as to form the finished product into a perfect round or any other desired shape.

A further object of the invention is the provision of a die adapted to be positioned adjacent to the last stands of a rolling mill and so designed as to be capable of lateral adjustment with respect thereto.

A further object of the invention is the provision of a die adapted to be used in connection with the last stands of a rolling mill, the said die adapted to be liquid cooled so as to prevent the deterioration of the material thereof.

A still further object of the invention is the provision of a die adapted to be used in connection with a shafting or bar rolling mill to facilitate the formation of a shaft or bar of relatively strong structural quality due to the tendency of the die toward compressing or more closely packing the material structures being shaped thereby.

A still further object of the invention is the provision of a die adapted to be used in combination with the last stands, of a rolling mill, the said die being adapted to control the shape of objects primarily shaped by the said rolling mill.

with the foregoing and other objects in view which will appear as the description proceeds. the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed. can be made within the scope of what is claimed without departing from the spirit of the invention.

The invention is illustrated in the accompanying'drawing, wherein:

Figure l is a side elevation of the last stands of a rolling mill and shows the die, the subject of this invention, in workable position adjacent thereto.

Figure 2 is an enlarged cross-sectional side elevation of the die, the subject of this invention.

Figure 3 is an end elevation, on a scale similar to that of Figure 2, illustrating the die, the subject of this invention.

By referring to the drawing and Figure 1 in particular, it will be seen that the last two stands traveling from left to right of the device illustrated in Figure 1, will enter it, there is a die generally indicated by the numeral II which die is formed of material adapted to withstand the wear and heat it is subjected to in shaping bar or shaft emerging from between the rolls HI and i I. It will be seen that the die it enables the formation ofa perfect bar or shaft as'irregularities in the shape of the bar or shaft as rolled, are forcefully smoothed out by the die ll.

Still referring to Figure l of the drawing, it will be observed that the die II is positioned adjacent the rolls l0 and H in a manner making it possible to move it sideways in order to facilitate its use with multiple cavity rolls which are ordinarily common in the art and wherein different sizes of bars or shafts may be rolled by simply utilizing adjacent positioned cavities. The means provided for the sideway or lateral adjustment of the die l3, may obviously be varied as to design and construction. In Figure 1 however, such means is illustrated as comprising a pair of brackets I4 and A, the bracket ll formed with a downturned end, and the bracket I 4A formed with an upturned end. These brackets I4 and A are adapted to slidably engage a pair of horizontally positioned guiding and supporting bars l5 which are in turn carried by structural members It spaced well apart from the central location of the die l3, and which structural members l8 may obviously be attached to and form a part of the rolling mill stand structure heretofore referred to and indicated by the numeral ii.

In order that the die I! may be locked in position in alignment with the particular cavities being utilized in rolling shafting or bar, manually operated bolts I! are threadably positionedthrough each of the brackets 14 and A and are adapted to engage the horizontal guiding and supporting bars I5 so as to effectively lock the die against unwanted sideward movement during actual operating periods.

Still referring to Figure 1, it will be observed that bar or shaft emerging from the die I! is indicated by the numeral II and is shown being delivered to a conveyor table I, the conveyor rolls of which are indicated by the numerals II. It is believed that the various conveyor rolls 2| of the conveyor table It should be powered in order to impart movement to the bar or shaft I! and thus tend to keep it in motion after the rearmost end hasleft the rolls ill and H. The distance between the shaping surfaces of the die I! and the engaging positions of the rolls l and ii is not great but provision has been made to provide forimparting movement to the bar or shaft i8 during this phase of its travel to insure the rear-most end successfully passing through the shaping die ii. In the event the motion imparted by the conveyor rolls 20 is not suflicient for the purpose, it will be observed way 23 which communicates with the exterior of the die I3, will be forced to travel through the chambers 2| around the shaping surfaces of the die and will then be discharged through a secondary'passageway 24 communicating with the chambers 2i and the exterior of the die. Hose connections are established between the outer-most ends of passageways 28 and 24, one of which is placed in communication with a fluid supply source, the other of which forms a drain.

It will be seen that the die l3 may be i'ormed in any practical shape of any practical material and that if desired, the actual shaping surface of the die may be made in the form of inserts positioned in a body member adapted to hold the same and provide for the cooling thereof. It will also be seen that the die is provided with a trumpet shaped opening which insures the direction of the bar or shaft being shaped to the shaping surfaces of the die.

It will be seen that the die as illustrated and described herein when used in connection with bar and shafting rolling mills, makes it possible to produce perfect shaped products whether they be round, square or any other shape des red. The die therefore, eliminates the waste now common in the art of making shai'ting and bars in that there are no out-of-round or other undesirable irregularities produced which must be cut from the finished product-as waste. It will also be seen that the condition of the rod or shaft being used will not affectthe quality of th product produced as scale or other surface imperfections are readily removed by the die.

By again referring to Figure 1 of th drawing, it will be seen that a pair of secondary guide members 26 and 21 have been. positioned between the die l3 and the point between the rolls Ill and Hwhere the shaft or bar emerges therefrom. These guides are preferably carried by the structuralmembers lt-heretofore described. and serve to prevent buckling of the bar or shaft being directed through the die !3. It will be observed-that these guide members may be supported or otherwise held in desirable position by any means known in the art so that they will remain in operative position at such times that there are no'bars or shaft therebetwecn. The guides extend into the cavities of the rolls and are shaped to fit therein so that they guide the shaft or bar over the complete distance between the rolis and the die.

Having thus described my invention, what I claim is:

The combination of a bar rolling mill and a die positioned immediately after the last stands of the said rolling mill, the said di comprising a body member of suitable material having an opening formed therethibflilh and a directional trumpet formed therein, cooling chambers positioned-about the shaping surfaces oi'the said die and means for circulating a cooling agent therethrough, the said die adapted to be positioned in alignment with-the delivery section of a bar or shaft rolling mill so that bar or shalt emerging from the rolling mill is directed through the said die and suitably shaped thereby.

"ALEXANDER

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