US1823436A - Finishing roll polisher - Google Patents

Description

Sept. 15, 1931. D. w 5 ET AL 1,823,436

FINISHING ROLL POLISHER Filed Aug. 27, 1929 6 throughout the several views i Patnted Sept. 15,1931

U SH DAVID H; WILLIAMS AND owEN L. BECK, 0F APOLLO, PENNSYLVANIA FINIsHING ROLL POLISHER Application filed August 27, 1929." Serial No. 388,706.

1 Our invention relates to a'polishing apparatus designed for removing any inequalities from the peripheries of finishing rolls of metal sheet rolling mills, to assure perfectly finished metal sheets after the finish rolling operation, I

The usual method employed for polishing finishing rolls consists of securing the polishhis stone adjacent to the end of a lever which is fulcrumed and manipulated by the workman so that the polishing stone is passed over and pressed against the periphery of the roll, while thelatter is rotating. This method is very ineflicient, renders the mill ieigiporarily inoperative, and entails arduous a or. i c J Important objects of the invention are to provide a'finishin'g roll polisher of the char acter described which is automatic in its 'operation,which will function during the sheet rolling operation, which may be readily installed in a rollingmill already erected, aswell, as form a component part of a new rolling mill structure, which may 1 be readily removed from the rolling mill when required, or replaced to the latter, and, which may be adjusted to operate on the entire periphery of the roll or any de sired portion thereof.

: Further objects of the inventionareto provide a device of the class stated,'which is simple in its construction and arrangement, strong, durable and efficient in its use, positive in its action, and comparatively in 5 expensive to manufacture, instalh'operate and maintain;

- With the foregoing andother objects in pview which will appear as the, description proceeds, the invention resides '1 in the com- 0 binatio'n and arrangement of parts and in thedetails of construction hereinafter described and claimed, itfbeing understood that changes in the precise embodiment of theinvention hereinafter disclosed can be made 'witl'iin the scopeof'what is claimed Without departing fronrthe spirit of the I supported on the bracket 7 V The hub 11, of

' invention. I

In the '(rawings ,whereln like nulnerals of reference designate correspond ng parts Figure 1 is a front elevatio-nal view of a rolling mill structure embodying the presentinvention.

TES- PATENT OFFICE Figure 2 is an enlarged side View of the shifter member, and of associated parts. I

Figure 3 is an enlarged side view of the polisher saddle carrying the polishing stones.

' Figure 4 is an enlarged side view of the suspension arms and of associated parts.

Figure 5 is an enlarged view, partly in cross section, of the slide bearing and its supporting shaft.

Referring in detail structure, in which a pair of associated rolls, indicated at 2 and 3, are revolubly mounted.

The rolls 2 and 3 are disposed horizontally to the drawings 1 de notes the stand or frame of a rolling mill with the former above the latter, and tog.

gether' with the frame'l, are of a construe tion" and operation now commonly employed in rolling mill practice.

The drawings and description illustrate and describe the adaptation of the present invention to the front of the rolling mill structure and as applied to the top roll 2 only. It being obvious that the lower roll 3'is also equipped with an-identically constructed polishing apparatus disposed at a connecting end 5, which projects fromthe adjacent side of the frame 1. 1 v

The'feed screw, 4 is driven by an electric motor 6, which is suitably supported on a One 'iendioffthe feed screw is squared to provide bracket 7 fixed to the frame 1. The motor 6 is provided with a wor1n8, which meshes with a worm wheel 9. The latter is jour: naled for rotation in a suitable bearing 10 the worm wheel 9 is formed with a square socket 12,.which is adapted for the recep- 'tionof the squared connecting end 5, of the feed screw 4:.- The operation of the'motor 6, through its connection with the feed screw 4, in the manner stated, will impart rotation to the latter. 7 I h The feed" screw 4 is maintained in its position inv the frame 1,'by a releasable collar 13, which abuts against-the inner i socket l2 prevents its movementinthe other side of the frame. 1. fThe collar 13 prevents the longitudinal movement of the feed screw ,4, in one direction, and the engagement of the square connecting end 5 in the hub direction.

The feed screw .4 is

V prevent overheating of the feed screw'd due toits proximity tothe r0112.- A water supply element 14 connects with one end of the feed screw 51-, and the water passes from the latter through apertures 15, which are ,formed in the projecting, squared connecting end 5 thereof.

The shifter member 16 further includes a 1 rearwardly projecting yoke 20 which engagesjthe centerportion 21 of the slide bearing 17. Thelatter is also formed -,to provide end portions 22 and 23, whichtogether with p the center portion 21, are divided from each other by respective annular flanges 24. .7

The slide bearing 17 is slidablymounted on a tubular supporting shaft 25. The latter extends parallel to the feed screw 1, but is disposed rearwardly of and above the latter. The ends of the supporting shaft 25 are removably'mounted in the bearing slots 26, which are formed in the free front ends of respective suspension arms 27 .e The top ends of theflbearingslots 26 are open and are coveredbyplates 28 to maintain respective ends offthe supporting shaft 25 in said bearing slots 26. One endof each of the plates 28 is pivot-ally connected, as at 29,

to the top of respective suspension arms 27 'Y The other end of the plate 28.is formed with an open slot 30,'which engages a bolt 31 'threadedlymounted in the top of suspension arms 27. The partial release of the boltsv 31 will allow the plates 28 to be swung on their pivotal connections 29 and permit the removal of the supporting shaft 25 from the bearing slots 26 in thesuspension arms The rear ends of the suspension arms 27 arepivotally connected by bolts 27 to the frame 1 to dispose the former at respective ends of the top roll 2. 'Thejsuspension arms I tubular permitting of the circulation of water therethrough to 27 are curved longitudinally to conform to the curvature of the top roll 2.

The supporting shaft 25 is hollow to allow the circulation of water therethrough to preventoverheating due to its proximity to the top roll 2. The tubular supporting shaft 25 is formed with closed ends, and is "provided with aflwater inlet connection 32 and a water outlet connection 33. The inlet and outlet connections 32' and 33 are disposed adjacent to the ends of the supporting shaft 25.

A saddle 3 1, formed with an open bearing, groove 34 "on its outer side, is carried "by each of the "endportions 22 and23, of

the slidebearing 17, at respective sides of the shifter member 16. The end portions 22 and. 23 are mounted in the bearing grOOVQSBl' of respective saddles 34, and the latter may be readilyremoved or replaced by elevating the supporting shaft-25, in a manner permitted by the latters connection with the suspension arms 27, to provide clearance between the supporting shaft 25 and the top roll 2. I

Each of the saddles 34 carries a pair of horizontally extending, polishing stones 35 which are of a type now commonly employed for polishing sheet mill rolls. Each of the saddles 3a is formed on its inner side with a a pair of grooves 36 for the reception of the polishing stones 35. The latter have tapering sides and the side walls of the grooves 35are correspondingly tapered to maintain the polishing stones 35 in said grooves 36,, and to permit of and facilitate the removal and replacement of the polishing stones 35 when required.

Each of the saddles 34 is positioned rearwardly of the slide bearing 17, and both of .roll 2, one of the polishing stones 35 being disposed above the slide bearing 17 and the other below the latter.

As it isnecessary for the polishing stones 35 to operate under great pressure to effect the polishing operation, air pressure is provided through a pair of vertically disposed air cylinders 37. An air cylinder 37 is fixed at each side of the frame 1, and includes a piston and a piston rod 38, which has its loweren'dpivot'ally connected, as at 39, ad jacent' to the front free end of respective suspension arms 27. p

The cylinders 37 are joined with suitable air supply and control elements for project- :ing the piston rods 38 to exert pressure upon from the polishing stones 35 and to elevate the respective suspension arms 27 when desired. The rear'end's of the suspension arms 127 are provided with elongated slots 40 for parallel disposed,

thepassage of. the pivoting bolts 27', to allownecessary compensatory movements of the suspension arms 27 whilethe piston rods member 16 threadedly engages the feed screw 4, the shifter member 16 will travel v along the feed screw 4 in eitherdirection depending on the direction ofrotation of the feed screw 4. The travel of the shifter member 16, will, of course, slide the slide bearing 17 in the same direction along the supportingsha-ft 25. The saddles 34 with the polishing stones 35, being carried by the slide bearing 17, will likewise shift with the latter.

p The motor 6 is of a reversible type, now in common use, and is controlled by the functions of a reversing switch 41, which is fixed 7 to the frame 1 and operated by a depending switch lever 42. The lower'end of the latter is formed to provide a fork 43 which straddles a flat, horizontally disposed operating bar 44.

The operating bar 44 extends parallel to the top roll 2 and is mounted for longitudinal movement in apertures 45 provided the shifter member 16.

in respective sides of the frame 1. A detachable leg 46 depends from the center of the bar 44, and the lower end thereof is loosely engaged between a pair of cars 47 formed on the top of the yoke 20, of The horizontal movement of the latter during the polish- -ing operation will impart like horizontal movement to the operating bar 44. The loose engagement of the leg 46 in the ears 47, will permit the necessary vacillation of the shifter member 16 duringthe polishing operation, without interference with or imparting such vacillatory movement to the operating bar 44. p

Apair of removable actuating lugs 48, are fixed in spaced relation on the top edge of the operating bar 44. The latter is formed 1 with a plurality of apertures 49 permitting V the spacing adjustment of the actuating lugs The operating bar 44 passes through the forked lower end 43 of the switch lever 42,

- and the actuating lugs 48 are disposed on respective sides thereof. The purpose of the actuating lugs 48 is to engage and shift the switch lever 42 in both directions to operate the switch 41, which controls the directionrof rotation of the motor 6.

The relative positions of the actuating lugs48 on the operating bar 44, is such that one of the lugs 48 will engage and shift the switch lever 42 to reverse the operation of themotor 6 when the polishing devices I I on the slide shaft 17 have'reached a desired stones 85, slide bearing 17, and the operating bar 44, will shift constantly back and forth as long as the motor 6 is operating. The operation is entirely automatic and is performed during the sheet rolling operation.

Such continuous polishing operation will maintain the roll in perfect condition for rolling operations, and the latter need not be suspended to permit the polishing operation.

It will here be noted that all parts of the invention are readily removable from the rolling mill, thereby permitting access to the rolls when heating, repairing or changing the latter.

The present invention provides a most efficient device of its kind, which will operate automatically for maintaining the rolls in perfect condition at all times.

What we claim is:

In combination, a roll polisher, of the character described, comprising a revolubly mounted tubular feed screw, a removably mounted tubular supporting shaft extending parallel to said feed screw, a slide bearing being longitudinally shiftable on said supporting shaft, a shifter member including a hinged bearing threadedly engaging said feed screw, said shifter member further ineluding a yoke engaging said slide bearing, aremo'vable saddle carried at each end of said slide bearing, a pair of polishing mem bers removably mounted in each of said saddles, suspension arms for said supporting shaft, air operated elements connecting with said suspension arms for imparting pressure to said polishing members, said feed screw and said supporting shaft being provided with inlets and outlets to permit of the pas sage of a cooling medium through same.

In testimony whereof we ailix our signatures.

DAVID H. \VILLIAMS. GIVEN L. BECK.

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