US1739939A

US1739939A - Hollow roll

Info

Publication number: US1739939A
Application number: US154799A
Authority: US
Inventors: Baehr George
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-12-14
Filing date: 1926-12-14
Publication date: 1929-12-17
Anticipated expiration: 1946-12-17

Description

Patented Dec. 17, 1929 mire-Nr orsi-e121 GEORGE'. Barnim.` oF llvrcirrmsroam en''maestriwafivairL HOLLOW ROLL Appiiation. filea'ncember 14, 1926; semi No. 154,799;A

This invention relates to rolls. v I K More particularly it relatesto composite rolls', in' which aiormingi or face pjo'rtioiris separable from' the driving or' spindle portion;

' Amongthe'objects of the invention arel to providea roll' having' a separable hollow Wearing face or shell that' may be heated or coole-d by circulating fluid therein, together with means for accurately positioning the shell portion of the roll uponvt'he spindle portion, andbf'retaining itin fixed position thereon'by means permitting its ready detachment. v Referringto the' drawings, Fig. 1 shows an axial-partial section through the roll'vvith all of the parts in assembled position; Fig. Q'

is an endvieiv on the line IIe-II o'Fig. 1; Fig. 3 is a partial section on the' lines Hl-Hloi'tFig; 1.

As well known in the art, rolls usedl for forming and finishing hot metal bars are subject to a considerable Yamount or Wear. After thev surfaces of theroll have become Worn it is necessary to dismount them, resur- 'ace the-Worn' face portion by machining, or other means. Aiterthis'has been done a certain number of times, the roll is no longer usey ful and must be scrapped. Furthermore, the 3o 'necksofthe'rolls'sometimes break, and under present'conditions that means that the entire roll" is a Atotal loss except for scrapV uses of themetal as'such. Also the physical charac- 3'5* su'cli'rolls are'not those'most suitable for the necks thereof; 1

To meet=these'conditions, and to provide an improved form of roll in Which the Wearing 4U, surface' portion may be detachable from the as that illustrated in the drawings has been designed; y Y

This comprises an' aXialzs'pindle member forging, havingl its' end formed intoy Wobblersl, vvitli'a'djaoent necks?, andivvith an intermediate" body portion' 3, Which may be i in thel original forged form, Without any mashining; Betweenth'emiddle body portion 3f andI thene'cks' 2, the body member is mate'ristics suitable' forv the' forming surface of spindle or carrying.' portion, a` structure such ehined tof formathreaded'; portion 4 and a smooth'cylindrical portion 5", respectively, as indicatedon'thedrawing. Y Y

' The threaded Aportion lfis adapted to receive an internally threaded `We'dg'e seat-ingior sup-- port memberA 6';v and! the smooth portion 'is adapt'edlto receive a similar Wedge member?, which however is not threaded but merely slides thereon These supporting Wedge members 7 and 6"are preferably -ii-rus-v tro-'conicalinexterior shape, with longitudinal'seating ri'bsll and. 14a thereon respectively. The ribs are preferably three in n-umber'oneachioi members 6 and 7, giving stable support as will beobvious. f

keyivay 8 is provided in the' neck 2 and'` threaded" portion Ll, With a' corresponding. keyivay' in theWed'gej member' 6, so that` the latter'may'be held against rotation on theY spindle-memberjbyinsertion of a key 9, as sliovsfnattlie'leftofFig'; 1.`

` A j am nut 1f()y isfadapted'to.cooperate.with thread-son portion 5, and'isa'follovver for the lWedgel member 7, for the purpose of driving andlockingit ii'r'proper Aoperative posi.- tionup'on the spindle'.`

The Wearing iaceor the rolll is formed by a hollow shell which' may be made by casting, or forged, havingjend portionsll'and 12 with a connecting intermediate cylind'ri- 80 calr portionl. 'The ends 11 and'12 have aligned inwardly convergine tapered: openings adapted to seatonV ribs 111 andllla on the. outer surfaces oi' the Wedge. members 7 and 6, respectively: y f

The opening in the' end 12 of the -shellhas keyvvays 15" adapted to receive the ribs 14, so that there can be -no relative rotation between the' shell andbase 7. That base itselfis pref# erably held in non-rotatable relation to the spindle by'a keyfQ.

'llliezonter' face'13` of the shell member may have grooves of* any desired contour maa chinedj therein: for the'purposes of for-ming barsthat. are tovbei-rolledfbetween this roll and a cooperating one ofi similar exterior sur-face, asWll-.be'understood by'those `familiar-,With therart'. This .member mayf'befmade of; a. special' alloy suchV as adamite, or chilled:- iron, to give increased Wearing qualities, 100

Cil

while the spindle may be of soft low-carbon steel for toughness and resistance to breaking strains.

Hardened washers may be used where necessary at the ends of the shell member, for the purpose of furnishing the contact with the housing or journal members. These will be of suitable number and thickness, and are not illustrated or claimed.

In making up a rOll embodying this invention, the spindle member is forged in one operation. The necks and wabblers are then machined so much as is necessary, as are also the keyways, and the threaded portions 4 and 5. Holes are drilled in the outer ends of the support member 6 and in the outer face of the jam nut 10 so t-hat they may be turned down with a spanner Wrench.

The wedge member 6 is first turned to its proper position upon the threaded portion 4 of the roll, and the key 9 is inserted, thus locking it in position. The shell is then moved over the spindle from the opposite end of the roll, the opening in the end 11 thereof seating upon the three ribs 14a of the support ymember 6. This three-point support arrangement insures that the roll will be accurately seated upon the base or Wedge 6.

The frustro-conical wedge member 7 is then slipped on the portion 5 until the three ribs 14 upon its outer face seat in the keyways 15 of the opening in the end 12 of the hollow body member. The key 9a is then inserted and the jam nut 10 is turned up to lock the supporting member 7 in position. The cylindrical surface 13 of the roll is then machined to true it, or to form grooves therein, and the roll is ready for attachment to the usual driving mechanism. When the member 13 becomes heated in use it will expand and elongate. The resulting increase of length will thrust the

ends

11 and 12 against the inclined members 6 and 7 This will result automatically in a tightening of the asf sembly in use, rather than a loosening as would result if the supports 6 and 7 were not so tapered.

It will be obvious that hot steam may be readily introduced through the space between the outer faces of the members 6 and 47, and the edges of the openings in the ends at the ends, thus giving additional strength.

The interior of the shell member may be left as a rough casting.

By this arrangement a roll made up of seven parts is provided, any one of those parts being replaceable in case it should fail or wear. If the necks break, the spindle may be replaced, without losing any of the lother parts; if the forming or face member breaks or wears out it may be'replaced without loss of other parts; if it wears or deteriorates in use it may be dressed down, While the remainder of the roll is in service with a different forming member tted thereon. Shells of different sizes, or with grooves of different contour, etc., may be used with a single spindle.

I claim:

1. A composite roll comprising an axial spindle member threaded atk one end, an internally-threaded wedge member adapted to engage the threads on the axial member, a slidable wedge member seated on the other end of the spindle, means to lock the slidable wedge member in position, and a shell member adapted to seat at each end upon Vthe wedge members.

2. A composite roll comprising an axial spindle member, frusto-conical wedge members movably mounted on the axial member, a hollow shell member adapted to seat at each end upon the wedge members, and readily-releasable means to lock the wedge members in adjusted position to support the shell member. v

3. A composite roll comprising an axial spindle member threaded at each end, frustroconical wedge members adapted to move on the axial member, a plurality of seating ribs upon the outer surface of each frusto-conical wedge member, a shell member adapted to seat at each end upon the ribs of the wedge members, and means to move the wedge members and to lock them on the spindle.

4. A composite roll comprising an axial spindle member having necks and wobblers at each end, wedge members adapted to move respectively from each end toward the middle portion of the spindle member, adjustable locking means for said Wedge members, and a hollow roll body member adapted to seat at each end upon and to be retained in position by the` said wedge members.

5. A composite roll comprising an axial spindle member having the usual necks and wobblers and an intermediate body portion, the ends of the intermediate body portion being threaded, a wedge member adapted to engage one of said threaded portions of the body and to move toward the middle portion thereof upon the threaded portion, a second wedge member adapted to slide on the other end of the spindle, a threaded member adapted to drive the second wedge member inward on the spindle, and a shell member adapted to engage the said Wedge members, said shell member comprising a cylindrical portion having anged nturned portions at the end thereof With tapered openings through the said flanged ends adapted to engage and seat upon the said Wedge members.

In testimony whereof, I sign my name.

GEORGE BAEHR.