US3348403A

US3348403A - Roll pass for tubing or the like

Info

Publication number: US3348403A
Application number: US408237A
Authority: US
Inventors: William W Bartley
Original assignee: McKay Machine Co
Current assignee: McKay Machine Co
Priority date: 1964-11-02
Filing date: 1964-11-02
Publication date: 1967-10-24
Anticipated expiration: 1984-10-24
Also published as: DE1427977A1

Description

Oct. 24, 1967 w. w. BARTLEY ROLL PASS FOR TUB ING OR THE LIKE 5 Sheets-Sheet 1 Filed NOV. 2, 1964 mW L M Z www Oct. 24, 1967 w. w. BARTLEY 3,348,403

ROLL PASS FOR TUBING OR THE LIKE Y I Filed Nov. 2, 1964 5 heets-Sheet 2 22/ Kg! 4a I? 11 INVENTOR. 12 VghLUAM WBARTLET A Tram/ 5 Filed Nov. 2, 1964 Oct. 24, 1967 w, w, BARTLEY 3,348,403

ROLL PASS FOR TUBING OR THE LIKE 5 Sheets-Sheet 5 W. W. BARTLEY ROLL PASS FOR TUBING OR THE LIKE Get 24, 1967 5 Sheets-Sheet 4 Filed Nov. 2, 1964 INVENTOR W1 LUAM W- BARTLEY A Tram/(w W. W. BARTLEY ROLL PASS FOR TUBING OR THE LIKE Oct. 24, 1967 5 Sheets-Sheet 5 Filed Nov. '2, 1964 United States Patent 3,348,403 ROLL PASS FOR TUBING OR THE LIKE William W. Bartley, New Castle, Pa., assignor to The McKay Machine Company, Youngstown, Ohio Filed Nov. 2, 1964, Ser. No. 408,237 15 Claims. (Cl. 72-237) The present invention relates to a mill roll pass, more particularly to a roll pass for a tube mill, and the principal object of the invention is to provide new improved passes of the character described.

The design of roll passes for high-speed tubing mills presents specialized problems in that frequent roll changing requires the rolls be cantilever mounted; i.e. mounted at one end of their supporting shafts, to facilitate roll removal and replacement. Since high-speed tubing mill rolls are frequently ground at regular intervals to present an accurate working surface and since such grinding results in the rolls progressively becoming smaller in diameter, means must be provided to quickly and accurately move the rolls toward and away from each other, without shifting the pass line of the tubing, to provide a properly sized pass for the latter. Roll movement toward and away from each other must also be provided for the purpose of accommodating tubing of various outside diameters. Finally, since rolls of the type herein contemplated have contoured working faces which must be aligned with each other, means must he provided to axially and relatively shift the rolls to effectuate such alignment.

The present invention solves the problems previously mentioned in a highly effective manner and these and other advantages will become apparent from a study of the following description and from the drawing appended hereto.

In the drawings accompanying this specification and forming a part of this application there is shown, for purpose of illustration, an embodiment which the invention may assume, and in these drawings:

FIGURE 1 is a fragmentary, broken perspective view of apparatus embodying the invention,

FIGURE 2 is a view, partially in section, generally corresponding to the line 2-2 of FIGURE 1, and

FIGURE 3, drawn to a smaller scale, and FIGURES 4, and 6 are sectional views generally corresponding to respective lines 33, 4-4, 5-5 and 66 of FIGURE 2.

With respect to FIGURE 1, there is rather diagrammatically illustrated a machine base 10 having a transversely projecting portion 11 which overhangs a pass line X along which tubing T and the like moves longitudinally. Supported beneath the base portion 11 are a plurality of roll passes 12 through which a piece of tubing T progressively travels. Each roll pass may be formed of a pair of rolls 13, 13.1 mounted in side-by-side relation for rotation on shafts 15, 15.1, respectively, the rotational axes of alternate passes preferably being disposed normal to each other..Since the roll passes 12 are preferably identical, with the possible exception that the rolls of each pass may differ slightly from each other, a detailed description of but one roll pass will be sufficient.

Turning now to FIGURE 2, it will be noted that while all of the parts associated with shaft 15 have been shown in section, most of the corresponding parts associated with shaft 15.1 and carrying the same reference number but with the suflix .1, are shown in elevation in the interest of simplicity and clarity. Such corresponding parts, however, are identical and thus a detailed description of only the parts associated with shaft 15 is necessary.

Shaft 15 is rotatably mounted within a sleeve 16 by axially spaced, anti-friction bearings 17, 18 of conven- Patented Oct. 24, 1967 tional roller or ball type. A tubular spacer 19 maintains the hearings in the proper spaced relationship. The lower, projecting portion of shaft 15 has a tapered portion 20 on which the previously mentioned working roll 13 is mounted by means of a tapered sleeve 120. A nut 21 is threaded on the shaft 15 and removably holds the roll 13 thereon.

Sleeve 16 is rigidly supported in the housing part 11 for both rotation and axial movement by means later to be disclosed and, with reference also to FIGURE 3, the bore of sleeve 16 in which shaft 15 is mounted is eccentric to the outside diameter of the sleeve so that rotation of the hereinafter to be referred to ec-cenric sleeve 16 effects transverse movement of the shaft 15. Rotatably mounted on the upper (in the position of parts shown) end of the eccentric sleeve 16 is an externally threaded sleeve 22 having an inwardly directed annular flange 23. An anti-friction thrust bearing 24 is inter-posed between the sleeve flange 23 and a shoulder on eccentric sleeve 16 while a similar thrust bearing 25 is disposed on the other side of the sleeve flange 23. A cap member 26 is bolted to the end of the eccentric sleeve 16 and clamps to the latter, the externally threaded sleeve 22 and the thrust bearings 24, 25. A suitable anti-friction bearing 27 may be interposed between the cap member 26 and the adjoining portion of the shaft 15. For a purpose to appear, the upper portion of externally threaded sleeve 22 is provided with external, longitudinally extending rectilinear splines 28.

Closely receivable in a bore at the upper end of base portion 11 is an internally threaded nut member 29 secured to portion 11 by means of screws 30 or the like. The lower portion of nut member 11 abuts a worm gear 31 which encircles the eccentric sleeve 16 and maintains such gear against a shoulder 32. For a purpose to appear, gear 31 is engaged with longitudinally extending, rectilinear splines 33 formed on the exterior of the eccentric sleeve 16.

As previously mentioned, externally threaded sleeve 22 is threaded in the nut member 29 and, threaded on the threaded sleeve 22, is a worm gear 34. As herein shown, gear 34 abuts the nut member 29 and functions like a jam nut to lock the externally threaded sleeve 22 to the nut members.

Disposed above the gear 34 and engaged with the splines 28 of the externally threaded sleeve 22 is a worm gear 35 confined against axial movement by flanges 36 formed in a housing member 37 which is bolted to the base part 11 and through which both shafts 15, 15.1 project.

Turning now to FIGURE 4, an adjusting shaft 38 extends transversely of the shafts 15, 15.1 and has worms 39, 39.1 keyed or otherwise afiixed thereto. Worm 39 is engaged with worm gear 31 while worm 39.1 is engaged with worm gear 31.1, the arrangement being such that when shaft 38 is rotated by a suitable handwheel or the like (not shown), the worm gears 31, 31.1 together with their eccentric sleeves 16, 16.1 will be rotated simultaneously. For reasons to be seen, the gears and their Worms are so chosen that rotation of shaft 38 in one direction effects rotation of worm gear 31 in a clockwise direction and worm gear 31.1 in a counter-clockwise direction. Obviously, rotation of shaft 38 in the opposite direction reverses the direction of rotation of worm gears 31, 31.1.

With reference to FIGURE 6, housing 37 rotatably supports shafts 40, 40.1 on opposite sides of the shafts 15, 15.1. Shaft 40 has a worm 41 keyed or otherwise secured thereto and engaged with the worm gear 35 while the shaft 40.1 has a worm 41.1 engaged with the worm gear 35.1. The arrangement is such that rotation of shaft 40 will effect rotation of worm gear 35 and consequent 3 rotation of the externally threaded sleeve 22. Similarly, rotation of the shaft 40.1 will effect rotation of the worm gear 35.1 and its externally threaded sleeve 22.1.

An identical arrangement to that above-described with respect to worm'gears 35, 35.1 is provided for the worm gear 34, 34.1. Thus, the housing 37 rotatably supports a shaft 42 directly beneath shaft 40 and a shaft.42.1 directly beneath the shaft 40.1. Shaft 42 will carry a worm engaged with the worm gear 34 while shaft 42.1 will carry a. worm engaged with ,the worm gear 34.1. Clearly, rotation of the shafts 42, 42.1 will respectively effect rotation of' the worm gears 34, 34.1. Although not shown, all of the

shafts

38, 40, 40.1, 42 and 42.1 may be provided with suitable handwheels or the like to facilitate rotation thereof.

Means are provided for retaining the eccentric sleeves against movement and, as best seen in FIGURE 5, such means comprises a pair of opposed blocks 43, 44 on a rotatably supported rod 45. The blocks 43, 44 have arcuate surfaces complementary with the exterior of the eccentric sleeve members, such blocks functioning as wedges as will appear. Block 43 is seated against a shoulder 46 on the rod 45, the rod being freely rotatable within such block. On the other hand, block 44 is internally threaded to cooperate with a threaded portion 47 of the rod 45 and a compression spring 48 encircles the rod between the two blocks and exerts a force yieldably urging the blocks away from each other. Floating axially on a splined portion 49 of the rod 45 is a miter gear 50 which meshes with a miter gear 51 carried by a shaft 52 rotatably mounted in the base portion 11.

. In the position of parts seen in FIGURE 2, eccentric sleeves 16, 16.1 are so disposed that shafts 15, 15.1 are in their most closely spaced position and are, at the same time, both in their most elevated positions. As will next be described, however, it is possible to simultaneously shift the shafts 15, 15.1 transversely away from each other (see also FIGURE 3) so that the rolls 13, 13.1 carried thereby are in respective, transversely off-set phantomline positions from the full-line positions shown. It is also possible to individually shift the shafts 15, 15.1 axially so that their rolls 13, 13.1 are in respective axially offset phantom-line positions from the full-line positions shown.

When it is desired to shift the shafts 15, 15.1 transversely, rod 45 will be rotated by means of shaft 52 (see FIGURE 5) in a direction to permit spring 48 to separate the blocks 43, 44 and shift them out of wedging engagement with the eccentric sleeves 16, 16.1. With the blocks thus disengaged from the sleeves, shaft 38 (FIG- URES 2 and 4) may be rotated to simultaneously rotate the worm gears 31, 31.1 and thus rotate respective eccentric sleeves 16, 16.1. When the shafts 15, 15.1 are transversely positioned as required, shaft 52 will again be rotated to draw the blocks 43, 44 toward each other to wedging engagement with the eccentric sleeves 16, 16.1 to thus lock the latter against movement from their selected positions.

When, for example, the shaft 15 is to be axially shifted, the blocks 43, 44 will be separated to release .both eccentric sleeves a previously mentioned and the shaft 42 (FIGURE 2) will be rotated toshift the worm gear 34 away from the nut member 29. Shaft 40 will next be rotated to rotate the worm gear 35 (see also FIGURE 6) to in turn rotate the threaded sleeve 22 within the nut member 29 thus effecting axial movement of the threaded sleeve and consequently that of the eccentric sleeve 16 together with its shaft 15. Upon the desired axial positionment of the shaft 15, worm gear 34 will once again be rotated to abut the nut member 29 thus locking the threaded sleeve 22, the eccentric sleeve 16 and the shaft 15 against axial movement. Also, the blocks 43, 44 will again be wedged against the eccentric sleeves 16, 16.1 to further hold them in position by rotation of the shaft 52 as previously described.

Obviously, in the event it is desired to effect axial movement of the shaft 15.1, this will be effected in a manner similar to that hereinabove described but by rotating the worm gears 34.1 and 35.1.

In view of the foregoing it will be apparent to those skilled in the art that I have accomplished at least the principal object of my invention and it will also be apparent to those skilled in the art that the embodiment herein described may be variously changed and modified, without departing from the spirit of the invention, and that the invention is capable of uses and has advantages not herein specifically described; hence it will be appreciated that the herein disclosed embodiment is illustrative only, and that my invention is not limited thereto.

I claim:

1. An improved mill for working longitudinally moving elongated stock, comprising a pair of rolls which together form apass through which the stock is fed, moving means for simultaneously and equally adjusting the rotational axes of said rolls toward and away from each other to maintain a fixed position of the pass line for the stock while providing adjustment of the pass size, and locking means separate from said moving means for locking each of the rolls independently against movement once they are adjusted.

2. An improved mill for working longitudinally moving elongated stock, comprising a pair of rolls which together form a pass through which the stock is fed, an eccentric member supporting each roll for rotation about an axis spaced laterally of the axis of its supporting member, means connecting said eccentric members together for simultaneous and equal rotation in opposite directions to thereby effect movement of said roll axes toward and away from each other to maintain a fixed position for the pass line while providing adjustment of the pass size, means for moving said connecting means to provide for adjustment of the pass size, and locking means separate from said moving means for locking each of the eccentric members independently against movement once the pass has been adjusted to a desired size.

3. The construction of claim 2 wherein each eccentric member is sleeve-like, wherein each roll is mounted on a shaft, wherein eachshaft is rotatably supported in respective eccentric sleeve members, and wherein said locking means operates directly upon respective sleeve members.

4. The construction of claim 3 wherein said eccentric sleeve members are mounted in a support, wherein one of the ends of said roil shafts project from said support to provide a cantilever mounting for said rolls, and wherein the other ends of said roll shafts project from said support for driving purposes.

5. The construction of claim 2 wherein said locking means comprises opposed wedge members interposed between said eccentric sleeve members and wherein means is provided to draw said wedge members toward each other to Wedging engagement with said sleeve members for the purpose aforesaid.

6. The construction of claim 5 wherein resilient means urges said wedge members apart against the urging of said means drawing said wedge members toward each other.

7. A pass for longitudinally moving stock comprising a pair of rolls forming the stock pass, an eccentric member supporting each roll for rotation about an axis spaced laterally of the axis of its supporting eccentric member, a support in which said eccentric members are mounted for both rotational and axial movement, means connecting said eccentric members together for simultaneous rotation about their axes to thereby effect transverse movement of said roll axes toward and away from each other while maintaining a fixedly positioned pass line for the stock, means for locking said eccentric members against rotation aforesaid to thus maintain said roll axes in preselected relation with each other, and means for effecting axial movement of said eccentric members.

8. The construction of claim 7 wherein said last-mentioned means selectively eflfects axial movement of individual eccentric members.

9. The construction of claim 8 and further comprising means for locking individual eccentric members against axial movement aforesaid.

10. A pass for longitudinally moving stock comprising a pair of rolls forming the stock pass, an elongated shaft for each roll, an eccentric sleeve encircling respective shafts and each having an axis spaced laterally of its shaft axis, each shaft being rotatably mounted in its sleeve 'but confined against relative movement axially thereof, a support in which said sleeves are mounted in spaced, side-byside relation for both rotational and axial movement, means connecting said eccentric sleeves together for simultaneous rotation about their axes to thereby effect transverse movement of said roll shafts axes toward and away from each other while maintaining a fixedly positioned pass line for the stock, means for locking said eccentric sleeves against rotation aforesaid to thus maintain said roll axes in preselected relation with each other, means for effecting axial movement of said eccentric sleeves, and means for locking said eccentric sleeves against axial movement aforesaid.

11. The construction of claim 10 wherein a pair of gears have spline connection with respective sleeves to provide for simultaneous rotation of a sleeve with its gear but to provide for relative axial movement therebetween, wherein a rotatably mounted adjusting shaft extends transversely of said eccentric sleeves, and wherein said adjusting shaft mounts gear means operably engaged with respective eccentric sleeve gears aforesaid to connect said sleeves together for said simultaneous rotation.

12. The construction of claim 10 wherein each sleeve has a collar rotatably mounted thereon, wherein each sleeve and its collar are connected against relative axial movement, and wherein said collar has threaded connection with said support to provide for axial movement of said collar together with axial movement of its sleeve upon collar rotation.

13. The construction of claim 12 wherein a pair of gears have spline connection with respective collars to provide for simultaneous rotation of a collar with its gear but to provide for relative axial movement therebetween, and gear means operably engaged with said gears to effect rotation thereof.

14. A pass for longitudinally moving stock comprising a pair of rolls forming the stock pass, an elongated shaft for each roll, an eccentric sleeve encircling respective shafts and each having an axis spaced laterally of its shaft axis, each shaft being rotatably mounted in its sleeve but being confined against relative movement axially thereof, a support in which said sleeves are mounted in spaced, side-by-side relation for both rotational and axial movement, a first pair of gears having spline connection with respective sleeves to provide for simultaneous rotation of a sleeve with its gear but to provide for relative axial movement therebetween, a rotatably mounted adjusting shaft extending transversely of said eccentric sleeves and mounting first gear means operably engaged with respective gears of said first gear pair, said adjusting shaft and said first gears and gear means connecting said eccentric sleeves together for simultaneous rotation about their axes to thereby effect transverse movement of said roll shafts axes toward and away from each other while maintaining a fixedly positioned pass line for the stock, opposed wedge members interposed between said eccentric sleeves, means for drawing said wedge members toward each other to wedging engagement with said sleeves for locking the latter against rotation aforesaid to thus maintain said roll axes in preselected relation with each other, a collar rotatably mounted on each sleeve and the latter and its collar being connected against relative axial movement, said collar having threaded connection with said support to provide for axial movement of said collar together with axial movement of its sleeve upon collar rotation, a second pair of gears having spline connection with respective collars to provide for simultaneous rotation of a collar with its gear but to provide for relative axial movement therebetween, second gear means operably engaged with respective gears of said second gear pair to effect rotation thereof and consequent axial movement of said eccentric sleeves, and means for locking said collars and consequently said eccentric sleeves against axial movement aforesaid.

15. The construction of claim 14 wherein said lastmentioned means comprises members threaded on respective collars to function like jarn nuts.

References Cited UNITED STATES PATENTS 285,567 9/1883 Carter 56.5

FOREIGN PATENTS 550,252 5/1932 Germany.

875,467 6/1942 France.

FRANCIS, S. l-IUSAR, Primary Examiner.

Claims

1. AN IMPROVED MILL FOR WORKING LONGITUDINALLY MOVING ELONGATED STOCK, COMPRISING A PAIR OF ROLLS WHICH TOGETHER FORM A PASS THROUGH WHICH THE STOCK IS FED, MOVING MEANS FOR SIMULTANEOUSLY AND EQUALLY ADJUSTING THE ROTATIONAL AXES OF SAID ROLLS TOWARD AND AWAY FROM EACH OTHER TO MAINTAIN A FIXED POSITION OF THE PASS LINE FOR THE STOCK