US426192A

US426192A - Machine for grinding mill-rollers

Info

Publication number: US426192A
Authority: US
Publication date: 1890-04-22
Anticipated expiration: 1907-04-22

Description

3 Sheets-Sheet 1.

(No Model.)

H. N. J. MANSFIELD. MAGHINE FOR GRINDING MILL ROLLERS.

Patented Apr. 22, 1890.

(N0 Mode l.) 3 Sheets-Sheet 2.

' H. N. J. MANSFIELD.

MACHINE FOR GRINDING MILL ROLLERS.

No. 426,192. Patented Apr. 22,1890.

aummun 7 lllllllllllll 111: name wanna no. mmoufun wuumawu, n. c.

(No Model.) 3 Sheets-Sheet 3.

H. N. J. MANSFIELD; MAGHINB FOR GRINDING MILL ROLLERS.

No. 426,192. Patented Apr. 22, 1890.

ms NORRIS warns on., momma, vusmmmm, v. c.

IIIRAM N. J.

MANSFIELD,

OF MALONE, NE\V YORK.

MACHINE FOR GRINDING MILL-ROLLERS.

SPECIFICATION forming part of Letters Patent No. 426,192, dated April 22, 1890.

Application filed June 1, 1889- Serial No. 812,861. (No model.)

To aZZ whom it may concern:

Be it known that I, HIRAM N. J. MANsFInLD, a citizen of the United States, residing at Malone, in the county of Franklin and State of New York, have invented a new and useful Machine for Grindin Mill-Rolls, of which the following is a specification.

This invention relates to machines for grinding the faces of the rollers in calendering-machines, rol1er-mills, and other places where stacks of metal rolls are employed; and it has for its object to construct a machine which may be mounted detachably upon the rollerframe, and by means of which the rolls may be ground without the expensive and laborious process of detaching them from the frame in which they are mounted.

The invention consists in the improved construction and combination of parts, which will he hereinafter fully described, and particularly pointed out in the claims.

In the drawings hereto annexed, Figure 1 is a front elevation of the roller-frame of a calenderingmachine to which my improved roll-grinding machine has been applied in position for operation. Fig. 2 is a side elevation of the roll-grinding machine detached from the roller-frame. Fig. 2 is a detail. sectional View of the stud-bolt lat and screw-threaded rod 16. Fig. 2 is a plauview of the same. Fig. 3 is a vertical sectional view taken on the line 5 z of Fig. 1 and showing the grinding-disk in. side elevation. Fig. 4 is a perspective view of one of the vertical posts or side beams of the grinder-frame. Fig. 5 is'a perspective view of one of the supportingbrackets for the latter. Fig. 6 is a detail side elevation of one of the bearings for the main shaft of the gririding-machine. Figs. 7 and 8 are detail views of the vertically-adjustable brackets which support the grinding mechanism. Figs. 0, 10, 11, 12, 13, 14:, and 15 are detail views illustrating the clamping device for holding the rollers steady while being operated upon by the grindirig-machine. Fig. 1G is a detail front view of the main shaft of the grinding-niaehine carrying the grindingdisk and of the screw for adjusting the said grinding-disk. Figs. 17 and 18 are detail sectional views taken on the lines ac and 1 y in Fig. 1.

The same numerals refer to the same parts in all the figures of the drawings.

1 1 designate the vertical side beams of the frame, which are provided in the usual mannor with bearings for the rolls 2 2.

In the construction of the roller-frame and the arrangement of the rollers no invention is claimed, and it will be understood that my present invention, which relates solely to the grinding mechanism, may be applied to and operate upon a calendering-machine rollerframe of any desired construction, or any other machine having two or more vertically-arranged rolls.

3 3 designate a pair of arms or brackets, which are secured, respectively, at the upper and lower ends of the side beams of the machinc-frame by means of screws or clamping bolts 4. The said arms or brackets are provided at their outer ends with bearings 5 for the upper and lower ends of the vertical beams or posts 6, which constitute the main frame of my improved grinding attachment, and which, being mounted in these hearings, may be readily adjusted axially to assist in the adjustment of the parts of the device to be hereinafter described. The upper and lower ends of the said beams or posts are rounded, as shown at 7, so as to fit in their respective bearings, and the said posts, which are by preference square in cross-section, are provided with vertical longitudinal slots 8, extending nearly through their entire lengths.

9 9 designate a pair of boxes, which are fitfed and mounted to slide vertically upon the beams or posts 6, said boxes consisting each of the front and rear sections 10 and 11, which are provided with the laterally-extending ears or lugs 12, connected by means of bolts 13.

11 are studbolts extending transversely through the boxes 9 and through the slot 8 in the vertical posts 6. Said stud-bolts are provided within the slots Swithinteriorly-serewthreaded eyes 15, forming nuts that work upon the vertical screw-threaded rods 16, which are located within the vertical beams 6 and have their hearings in the lower ends of the said beams and in brackets 17, mounted upon the upper sides of the upper brackets 23, as will be clearly seen by reference to Figs. 1 and 2 of the drawings. The brackets or standards 17 are provided on their front sides with boxes or bearings 18 for a shaft 19, which is provided with worms 20, meshing with worm-gears 21, which are mounted loosely upon the screwthreaded shafts 16 near the upper ends of said shafts. The shaft 19 isv provided adjacent to the boxes of bearings 18 with collars 22, hav ing set-screws 23, by means of which the said collars may be adjusted upon the shaft 19, so as to prevent undue endwise movement of said shaft. Motion may be imparted to the shaft 19 either by means of hand-wheels 24 at one end thereof or by means of the fixed pulley 25, which is mounted upon its opposite end.

26 26 are loose pulleys mounted upon the shaft 19 adjacent to the fixed pulley 25, and

' straight and crossed belts run from the said pulleys 26 to driving-pulleys arranged upon asuitable shaft. (Not shown in the drawings.) It will be seen that by this mechanism the shaft 19 may be caused to revolve in either direction, one of the driving-belts serving to revolve it in each direction and both of said belts running, when idle, upon the loose pulleys 26 26.

The worm-gears 21 are provided at their upper ends with clutch-lugs 27, adapted to engage corresponding clutch-lugs 28 upon the lower ends of clamping-collars 29, adjustable upon the upper ends of the screw-threaded shafts 16 by means of set-screws 30. It will be seen that by rotating the shaft 19 when the worm-gears 21 are connected with the clutches 29, and the latter are fixed upon the screw-threaded shafts, the latter may be rotated in either direction, according to the direction in which the shaft 19 revolves, thus raising or lowering the boxes 9, as the case may be, by means of the stud-bolts 14, extending transversely through said boxes and havin g the screw-threaded perforations that work upon the shafts 16.

The boxes 9 are provided with forwardly-extending cylindrical tubular arms or brackets 31, upon which sleeves 32 are mounted to slide. Said sleeves are provided on their upper sides with boxes or bearings 33, in which is mounted the main shaft 34, which is thus arranged transversely to the roller-frame to which my improved grinding-machine is attached. The said main shaft is preferably made "tubular in shape, as shown in the drawings hereto annexed, for the purpose of reducing the weight of the same without materially detracting from the strength. The boxes 33, that form the bearings of the said shaft, are provided with detachable caps 35, secured in position by means of bolts 36, and which may be conveniently removed for the purpose of adjusting or removing the said shaft, as oocasion may require. 7

The tubular brackets 31 are provided in their under sides with longitudinal slots 37 to admit of the passage of the shanks 38 of stud-bolts 39, the upper ends of which are provided with screw-threaded eyes 40, working upon screw-threaded shafts 41, that extend longitudinally through the saidtubular brackets and are journaled securely in the inner ends of the latter. The stud-bolts 39 extend through openings in the under sides of the sleeves 32, that slide upon the brackets 31, and are provided with nuts 42, by means of which they are secured to the said sleeves. The outer ends of the shafts 41 are provided with miter-gears 43, meshing with pinions 44, which are mounted upon the ends of a shaft 45, which is mounted transversely in suitable bearings 46 upon the front ends of the brackets 31. The pinions 44 are provided with collars 47, having set-screws 48, by means of which they may be secured rigidly upon the shaft 45, and which construction enables either one of said pinions to be loosened temporarily when it shall be desired to operate only one of said pinions for the purpose of adjusting or aligning the parts operated thereby, as may be required.

Collars 49, having set-screws 50, serve to retain the shaft 45 securely in its bearings and to prevent it from moving laterally therein.

The shaft 45 is provided at one end with a hand-wheel 51, by means of which it may be conveniently operated. It will be seen that by rotating the shaft 45 a rotary motion in either direction may be imparted to the shafts 41, which, as stated, are screw-threaded to engage the screw-threaded eyes 40 of the bolts 39, which travel in the slots 37 of the brackets 31, and are permanently connected to the sleeves 32, traveling upon said brackets. The said sleeves may thus by this mechanism be moved in either direction inward or outward upon the brackets 31, together with all the mechanism carried by the said sleeves, and which will now be more fully described.

The shaft 34, journaled in the boxes 33, is provided on diametrically-opposite sides with longitudinal feat-hers 52, extending nearly along the entire length of said shaft and adapted to be received by the longitudinal grooves 53 of the longitudinally-sliding sleeves 54, the inner sides of which are provided with clamping-disks 55, adapted to be connected by means of bolts or in any suitable manner and to hold the emery-wheel or grinding-disk 56, which is in this manner mounted upon and connected with the main shaft. The latter is provided near one of its ends with the main driving pulley 57, which may be connected by means of a belt with suitable operating maohinery.

58 58 designate collars mounted adj ustably upon the main shaft adjacent to the boxes or bearings and serving to hold the said main shaft securely in position against lateral movement.

The boxes 33 of the main shaft or the caps 35 of said boxes are provided with upwardlyextending brackets '59, the upper ends of which have boxes or bearings 60 for the ends of a screw-threaded shaft 61, which is thus mounted revolubly in a position parallel to the main shaft. The screw-threaded shaft 61 has a plain or unthreaded extension 62, the outer end of which is provided with a crank or hand wheel 63, and upon. which is mounted a fixed pulley 64c and two loose pulleys (35 65, adjacent to each other. The said loose pulleys are belted to the main shaft by the straight and crossed

belts

66 and 67, respectively, and it will thus be seen that by shifting either of said belts onto the fixed pulley 6% the screw-threaded shaft (31 may be caused to revolve in either direction. It will also be observed that the said screw-threaded shaft may, when desired, be operated by means of the crank or hand wheel 63.

For the purpose of automatically shifting or shipping the belts (J6 and 67 when the machine is in operation, I avail myself of mechanism as follows: 68 designates a transverse rod or bar mounted in suitable boxes or bearings 69 in the position parallel to the screwthreaded shaft 61 and the main shaft. Said rod or bar, which is arranged to slide laterally in its bearings, is provided near one end with the links 7 O and 71, encircling, respectively, the belts (5G and (57, and adapted to shift or ship the said belts from their respective loose pulleys onto the intermediate fixed pulley 64, which may thus be caused to retate in either direction. The sleeves 5t 54:, traveling upon the main shaft, as herein described, are provided with outwardly-extending arms 72, the outer ends of which have interiorly-screw-threaded eyes or openings 7 3 for the passage of the screw-threaded shaft 6] by the revolution of which the said arms or brackets carrying the sleeves 5e and the grinding-disk 56 may thus be caused to travel in either direction upon the main shaft. The shipping-bar 68 is provided with collars 7i, adjustable by means of setscrews 75. The brackets 72 have arms 7 6, adapted to engage the said collars 74c when the limit of the movement of the said brackets with their attachments has been reached.

Additional collars 7% are arranged upon the rod 68 outside the frame to limit the movement of said rod and to prevent the belts from being slipped off their respective pulleys by a too extensive movement of said rod.

The operation of this part of the machine is as follows: Motion is primarily imparted to the main shaft through the medium of the pulley 57. The collars 74 are then set upon the shippingbar 68 in such a manner as to regulate the extent of the movement of the sleeves 54, carrying the grinding-disk upon the said main shaft. The shipping-bar is then adjusted in such a manner as to cause one of the belts (36 or 67 to run over the fixed pulley G4. The screw-threaded shaft (31 will thus be caused to revolve, and the brackets 72, carrying the sleeves 5i and the grinding disk, will be caused to travel longitudinally upon the

shafts

61 and 34, respectively. When the limit of the movement has been reached, the arm 7 (3 of one of the brackets 72 will ongage one of the collars 74:, thus actuating the shi pping-bar, causing it to move laterally in its bearin gs and to ship or shift the belt, which has been working upon the fixed pulley 64, onto one of the'loose pulleys and the belt which has been working upon a loose pulley onto the fixed pulley. The direction of the rotation of the screw-threaded shaft 61 will thus be instantly and automatically reversed, and the brackets 7 2, with their attachments, be caused to travel in an opposite direction until the arm 7 6 of the other bracket 72 comes in contact with the collar 74 at the opposite end of the shipping-bar, when the operation is again automatically reversed. This operation continues as long as the machine is in motion or until the shipping-bar is so oper ated by hand as to place both of the

belts

66 and 67 in engagement with the loose pulleys 65. The operation of the main shaft having the grinding-disk may then continue, the said grinding-disk remaining stationary upon the main shaft. hen themachine is in this position, the grinding-disk 56 may be adjusted laterally by means of the crank or hand wheel (33 upon the screw-threaded shaft 61.

For the purpose of holding and steadying the rolls securely in their frame while being operated upon by my improved grinding mechanism, I avail myself of the clamping device illustrated in detail in Figs. 9 to 15, inclusive, of the drawings. The said clamping device comprises a plate or bracket 7 7, which is substantially T-shaped, the body of which is provided with openings 7 8, adapted to receive the hook-bolts 7 9, by means of which the said plate or bracket is clamped upon the I-beams 80, which form the frame in which the rollers are mounted, substantially as shown in Fig. 10 of the drawings. The vertical portions 81 of the T-shaped brackets 77 are provided with perforations 82 82, near their upper and lower ends, adapted to receive the horizontal belts or screwthreaded rods 83, the inner ends of which are screwed into the upper and lower ends of the yokes Si. Sliding yokes 85 are adjusted upon the bolts 83, and the yokes 81- and 85 are provided on their inner sides or faces with sockets S6, in which are seated the balls or rollers 87.

In practice the yokes Si and 85 are arranged upon opposite sides of and in such a manner as to clamp the neck of the roller which is to be operated. upon. Nuts 88 are arranged to be tightened up against the plate 77, for the purpose of drawing the bolts 83 with the yoke 84 up tightly against the neck of the roller. The plate or portion 81 of the bracket 77 provided with a central perfo-. ration 89, through which passes a set-bolt 90, adapted to bear against the yoke 85, which is thus likewise forced up against the neck of the roller. Janrnuts 91 are mounted upon the bolts 83 and adjacent to the plate or bracket 7 7, for the purpose of retaining the parts in position. when adjusted.

One of the clamping devices just described roller which is to be operated upon, and which is thus connected firmly with the frame in.

which it is mounted, thereby rendering it impossible for the said roller to shake or tremble while being operated upon. The friction balls or rollers 86 will adjust themselves in the yokes in which they are seated to the necks of the rollers upon which they are mounted, and it will thus be seen that the clamping devices are equally applicable to rollers of diiferent sizes and diameters and having either straight or inclined necks.

The operation and advantages of my improved roller-grindin g machine willbe readily understood from the foregoing description, taken in connection with the drawings hereto annexed.

The grinding mechanism may be conveniently attached to a roller-frame of any size and description by means of the clamps or brackets 3 3. Usually a number of rollers are mounted vertically in the same frame, and it will be seen that by means of the vertical screw-threaded shafts 16 the boxes 9, with their attachments and carrying the complete grinding mechanism, may be adjusted vertically, so as to bring the grinding-disk into vertical alignment with any one of the rollers which it may be desired to operate upon. This adjustment, it will be seen, may be effected either by hand or by means of suitable power applied through the medium of the

pulleys

25 and 26. ism, substantially like that employed in connection with the

belts

66 and 67, may be employed for the purpose of shifting or shipping the belts upon the

pulleys

25 and 26; but such .will not usually be" required, and has not therefore been shown in the drawings.

When the machine is first started, the emery-wheel or grinding-disk 56 may be at some distance from the face of the roller which is to be operated upon. After the machine has been started the shaft 45 may be operated by means of the hand-wheel 51, soas to bring the said emery-wheel into contact with the face of the roller with any desired degree of pressure.

The grinding-disk may, When desired, be suffered to remain stationary upon the main shaft; or it may, by the mechanism herein described,be caused to reciprocate upon the said shaft, thus bringing the said emery-wheel or grinding-disk into contact with the face of the roller for the entire length of the latter; or, when desired, the lateral movement of the grinding-disk may be limited to any desired extent, as may, for instance, be required,when the face of the roller is to be ground out of the true cylindrical shape.

The construction of the machine is such that it may be easily and conveniently applied to or detached from the frame the rollers of which are to be operated upon.

Several of the more important and expen- Shipping .mechan-V sive parts of the machine-such as the screwthreaded shafts-are removable and interchangeable, so that they may be changed from one machine to another, as will be found very useful in large mills where more than one grinding-machine is used.

The general construction of my improved roll-grinding machine is simple and inexpensive, and by its use the rolls maybe ground without being detached from the frame in which they are mounted, this being usually an important item of expense.

By means of the clamping device herein described the rolls may beheld securely and steadily while being operated upon, and a true and smooth face is thus assured by the use of my improved grin ding-machine and its attachments.

WVhile I have herein described the preferred form of my invention, I would have it understood that numerous changes in the detail construction might be made without affecting the successful operation of the machine in the least, and I reserve the privilege of making any such changes and modifications as may be resorted to without departing from the spirit of my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination, with a roller-frame having a set of rollers mounted permanently therein, of a grinding-machine and means for mounting the same detachably upon the said frame, and a clamping device adapted to connect the rollers with the frame in which they are mounted and to hold them steady during the operation of the grinding mechanism, substantially as set forth.

2. In a roll-grinding machine, the combination, with brackets adapted to be connected detachably to a roller-frame, of vertical beams or supports adapted to be mounted in said brackets and having vertical slots formed therein, the boxes arranged to slide vertically upon said beams or supports, said boxes carrying the grinding mechanism and provided with transverse stud-bolts extending through the slots in the vertical beams or supports and having interiorly-screw-threaded eyes,

the vertical screw-threaded shafts extending through the beams or supports, engaging the screw-threaded eyes in the stud-bolts of the vertically-adjustable boxes, and having bearings in brackets or standards extending upwardly from the upper supporting-brackets, worm-wheels mounted loosely upon the said screws, a transverse shaft having worms meshing with the said worm-wheels, mechanism for operating the said shaft, and means for connecting the said worm-wheels rigidly with the screws, upon which they are respectively mounted, substantially as set forth.

3. In a roll-grinding machine, the combination, with a frame having vertical side beams or standards, and brackets supporting said standards and adapted to be connected ITO detachably to the frame in which the rolls are permanently mounted, of the boxes arranged to slide vertically upon the side beams, the screw-threaded vertical shafts engaging transverse stud-bolts in the said boxes,wormwheels mounted loosely upon the upper ends of said shafts and having u pwardly-extendin g clutch-lu gs, clamps arranged upon said screwthreaded shafts above said worm-wheels and having set-screws by means of which they may be secured rigidly thereon, and downwardlyextending lugs adapted to engage those of the worm-wheels, a transversely-arranged shaft having worms engaging the said worm-wheels, and mechanism for operating the said shaft in either direction, substantially as and for the purpose set forth.

4. In a roll-grinding machine, the combination of vertical side beams or standards, brackets supporting said standards and adapted to be connected detachably to the frame in which the rolls to be ground are permanently mounted, boxes arranged vertically adj ustably upon the said side beams and having forwardly-extendin g brackets sleeves mounted longitudinally adj ustably upon the said brackets, a main shaft journaled in boxes or bearings upon the said sleeves, and an emery-wheel or grinding-disk mounted adjustably upon the said shaft, substantially as and for the purpose set forth.

5. In a roll-grinding machine, the combination of the vertical side beams or standards, the boxes arranged to slide vertically upon the same and having forwardly-extending tubular arms or brackets, the sleeves arranged to slide upon said brackets, grinding mechanism mounted on said sleeves, the stud-bolts extending through longitudinal slots in thesaid brackets and connected rigidly with the 1011- gitudinally sliding sleeves, suitably mounted screw-threaded shafts extending through screw-threaded eyes in the said stud-bolts and having pinions at their front ends, and a transverse shaft having m'itengears meshing with said pinions and provided at one end with a hand-wheel by means of which it may be manipulated, substantially as set forth.

6. In a roll-grinding machine, the combination, with the boxes adjustable vertically upon suitable side beams or supports and having forwardly-extending brackets, of the sleeves adjustable longitudinally upon said brackets, the main shaft mounted in suitable bearings upon said sleeves, a pair of sleeves or collars arranged to slide upon the said shaft and having spline or grooves adapted to engage longitudinal keys 01' feathers in the said shaft, and provided with outwardly-extending brackets having transverse screwthreaded eyes or openings, an emery-wheel or grinding-disk clamped between said sliding sleeves or collars, a transverse screw-threaded shaft extending through the screw-threaded eyes or openings in the outwardly-extending brackets of said sleeves, and mechanism for imparting the rotary motion in either direc tion to the said screw-threaded shaft, substantially as set forth.

7. In a roll-grinding machine, the combination of the vertical side beams, the boxes mounted ad justably upon the same and havingforwardly-extending brackets, the sleeves sliding longitudinally upon said brackets, the main shaft mounted in bearings upon said sleeves, the collars sliding longitudinally upon said shaft, an emery-wheel or grinding disk, brackets extending outwardly from said collars and having transverse screw-threaded eyes or openings, a transverse screw-threaded shaft extending through and engaging said openings, and mechanism for imparting rotary motion to the said screw-threaded shaft and means for automatically reversing the direct-ion of its rotation, substantially as herein set forth.

8. In a roll-grinding machine, the combination of the vertical side pieces or supports, the vertically-adj ustable boxes upon said side beams, having forwardly-extending brackets, the sleeves mounted adjustably upon said brackets, the main shaft journaled in suitable bearings upon said sleeves, the collars feathered upon said shaft, sliding longitudinally thereon and having outwardly-extending brackets provided with transverse screwthreaded eyes or openings, an emery-wheel or grinding-disk mounted between said collars, arms extending from the latter and adapted to engage collars upon the shippingbar of the belt-shifting mechanism, the transverse screw-threaded shaft extending through and engaging said screw-threaded eyes or openings 'and having a fixed pulley and two loose pulleys adjacent thereto, a straight and a crossed belt connecting said pulleys with the main shaft, a transverselyarranged shipping-bar mounted to slide laterally in suitable bearin gs and having links encircling the said belts, and collars mount-ed adjustably upon the said shipping-bar, substantially as herein set forth.

9. In a roll-grinding machine, the combination of vertical beams or standards, brackets supporting said standards and adapted to be connected detachably to the frame in which the rolls to be ground are permanently mounted, boxes arranged to slide vertically upon said beams or standards, mechanism for adjusting said boxes and for retaining them in any position to which they may be adjusted, sleeves arranged to slide upon brackets extending forwardly from said verticallyadjustable boxes, the main shaft mounted in bearings upon said sleeves, the grinding-disk arranged. to slide laterally upon said main shaft, and mechanism for operating the said grindingdisk and for automatically reversing thedirection of its lateral movement upon said main shaft, substantially as herein set forth.

10. The combination, with the hereindescribed roll-grinding machine, of a roller frame, a clamping device comprising a pair the said sockets, and bolts and nuts connecting the said yokes together and clamping them upon the neck of the roll and connecting them rigidly With the plate or bracket at tached to the roll-frame, substantially as and for the purpose set forth.

In testimony-that I claim the foregoing as my own I have hereto affixed my signature in presence of two Witnesses.

HIRAM N. J. MANSFIELD.

\Vitnesses:

THoMAs CANTWELL, JOHN M. OANTWELL.