US861016A - Roll-grinding machine. - Google Patents

Description

PATENTED JULY 23, 1907. I. L. BROWN & I. W. SPRINK.

ROLL GRINDING MACHINE.

APPLICATION FILED MAB. 7. 1908.

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No. 861,016. PATENTED JULY 23, 1907.

v'I'. L. BROWN & I. W. SPRINK.

ROLL GRINDING MACHINE..

APPLICATION FILED MAB. 7, v1906.

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FREDERICK L. BROWN AND ISAAC W. SPRINK, OF SCOTTDALE, PENNSYLVANIA.

ROLL-GRINDING MACHINE.

Specification of Letters Patent.

Patented Ju1y'23, 190'?.

Application ned March '1, 1906. Serial No. 304,797.

To all l'whom 'it may concern:

Be it known that we, FREDERICK L. BROWN and ISAAC W. SPRINK, citizens of the United States, residing at Scottdale, in the county of Westmoreland and State of Pennsylvania, have invented certain new and .useful Improvements in Roll-Grinding Machines, of

which the following is a specification.

This invention relates to that type of roll'grinding machines designed for turning or dressing surfaces on mill rolls used in steel or other manufacturing plants.

To this end the present invention contemplates a. simple and practical construction of roll grinding machine embodying means for quickly and accurately grinding straight, concave, convex, or corrugated surfaces on mill and similar rolls. I

One of the distinctive objects of the invention is to produce a type of roll grinding machine, exceedingly simple in its construction and action, while at the same time providing a rigid and powerful construction well adapted for heavy and accurate work, while at the same time involving a novel arrangement of parts which may be utilized as an attachment to the present roll turning lathes, or can be arranged as a complete selfcontained roll grinding machine capable of performing all of the necessary functions of a machine of that character.

A further object of the invention is to provide a roll grinding machine wherein all chatter is obviated by reason of arranging the grinding wheel in a rigid fixture which compels the same to travel in a line parallel with the axis of the roll being ground. Alsoithe improved machine provides a novel and practical arrangement of pattern-templet which can be quickly andaccurately adjusted without the necessity of subsequent readjust- `ment (or cut and try after grinding has commenced,

thereby securing quicker results and consequently. a cheaper operation.

With thesel and other objects in view which will more readily appear as the nature of the invention` is` better understood, the same consists in the novel con-4 struction, combination, and'arrangement of parts 4hereinafter more fully described, illustrated and claimed.

The essential features of the invention involved in carrying ont the objects above specified are necessarily susceptible to structural change without departing from the scope thereof, but a preferred embodiment lof the invention is shown in the accompanying drawings, in which,

Figure 1 is a top plan view of a roll grinding machine embodying the present invention. Fig. 2 is an end view thereof. Fig. 3 is a detail cross sectional view on the line 3-3 of Fig. 2, showing more plainly the relativo relation of the plurality of slides; Fig. 4 is a detail elevation of one ond portion of the pattern sup# porting bracket.

Like references designate corresponding parts in the several figures of the drawings.

In carrying vout the present invention, the roll grinding machine, in its adaptation as an attachment for roll turning lathes and as a complete self-turning machine, includes in its general organization a stationary machine bed 1 constituting a supporting base member for the operative parts of the grinding mechanism.

In the adaptation of the invention shown in the drawings, the same is illustrated as a complete machine embodying all of the necessary parts to effect a dressing of roll surfaces, whether straight, concave, convex, or corrugated. In this illustrated construction, said stationary bed is preferably of a general rectangular form and of sufficient length to accommodate a wide range of play for the traveling tooll carriage 2 which is arranged transversely or crosswise of the bed at the 'top side thereof and designed to slide longitudinally of such bed in the operation of grinding or dressing a roll surface.

Any suitable slide connection may be utilized between the tool carriage and its bed 1, but a practical construction is shown in the' drawings and consists in providing the bed at its upper longitudinal edges with'the guiding bevels 3 slidably interlocking with the under-cut slide tongues 4 provided at the opposite end edges of the traveling tool carriage 2. l

The tool carriage 2 may be fed longitudinally of its supporting bed, and hence longitudinally of the roll R to be ground through the medium of any suitable and approved feed mechanism, preferably of the automatic type such as is common to lathes and similar machines. It is preferable that the carriage 2 be equipped with that type of variable automatic feed which provides a coarse feed for roughing purposes and a finer feed' for a finishing operation. However, for illustrative purposes, the carriage feed mechanism is illustrated in outline in the drawings, and as shown, essentially involves a gear bracket 5 pendent from the bottom side of the' carriage 2, and supporting for movement with the carriage a traveling worm 6 splined on a feed shaft 7 arranged longitudinally of the machine bed and-driven through any I suitable driving connections. The said traveling worm 6 is shown as meshing with a. Worm wheel 8 on a short counter shaft 9 journaled on the gear bracket 5 and also Carrying a feeding pinion -lO'meshing with a stationary feed rack 11 fitted to and arranged longitudinally of the machine bed, as plainly shown in Figs. l and 2 of the drawings. v

In addition to sliding longitudinally of the machine bed, the sliding to'ol carriage 2 provides for ,the adjustable support thereon of what may be termed a double slide consisting of the separate slide members 12 and 13 respectively arranged in superposed relation. The slide member l2 is the lowermost one and may be properly referred to as a self-adjusting follower slide which is arranged in parallel relation to the traveling tool car- .riage and which has the opposite side edges thereof slidably engaged in the side guide ways 14 provided on the upper side of the tool `carriage at the longitudinal or side edges thereof. This slidable interlocking relation beween the slide`12 and the tool carriage or slide 2 provides for firmly holding these members together for movement in unison longitudinally of the machine bed,

while at the same time permitting an independent lon- A accurate and minute,l adjustment of the tool holding slide 13. through the medium of an adjusting screw 16. 27 of the templet, 11?.; a radius equal' to the average radius of each group of rolls to be ground, and by varythe double slide 12-13 and the threaded portion of this screw engages a xed nut 17 on the tool holding slide 13 and is journaled near its outer end in a fixed bearing This adjusting screw 16 is arranged longitudinally above stand 18 fitted on one end portion of the follower slide 12. At its end next to the bearing stand 18 the adjusting Screw 16 is equipped Withhand Wheel 19 Which-Cim be the follower slide 12 has mounted in or on one end conveniently reached and manipulated for purposes of the adjustment referred to.

Contiguous to one side of the machine bed the adjustable tool holding slide is equipped with an upstanding bearing hanger consisting of a pair of spaced standards 20 provided at their upper ends with the bearing boxes 21 in which are journaled the spindle ends of thewheel shaft 22 carrying a grinding wheel 23 and a belt pulley 24 over which passes a driving belt 25 for imparting motion to the wheel. The said grinding wheel 23 is of the type usually employed for roll grinding purposes, and in carrying out the present invention it is intended that this wheel shall have a grinding surface corresponding gto the character of the surface being ground on the roll,

thus insuring a perfect wheel-bearing on the face of the roll.

A distinctive feature of the present inventionresides in the' coperative relation between the double slide 12-13 and a pattern-templet 26 vertically disposed with reference to its inner pattern surface 27 and arranged longitudinally of the machine in substantial parallelism to the machine bed and to the longitudinal axis of the roll complishing the adjustment thereof, the preferred construction is shown in the drawings and consists in arranging the templet or templet balr at and against the y inner side of the .vertical fiange 27 of an angle pattern supporting bracket 28 whose lower or horizontal flange 29 is arranged upon a horizontal at rest base 30 formed at the outer ends of a pair or plurality of offstanding b1acket arms 31 bolted or otherwise secured to one side of .the machine bed and projecting off therefrom to a sufficient distance for holding'the bracket 28 in its odset parallel relation with referencev to one side of the machine bed, and with reference to one end of the tool carriage slidably arranged thereon to secure proper rigidity and alinement of parts. The lower horizontal ange 29 of the bracket 28 is provided-with a retaining rib or tongue 32 engaging a complemental groove or seat 33 in the base 30 of each of the arms 31. The said lower flange 29 of the bracketl 28 is further provided over each base 30 with longitudinallydisposed adjustment slots 34 receiving the securing bolts 35 for holding the bracket rigid when once adjusted. A' central pivot 36 passes through the bracket 28 and connects with the templet 26 centrally between the ends of the latter, and contiguous to its ends the said templet carries the fastening screws 37 projecting through vertically disposed play slots 38 formed in the vertical flange of the bracket 28. The inner pattern suz'face 27 of the templetcon responds to a segment or arc ofthe surface of the roll R' to be ground. In practical'operation the said surface ing the Eshape of this surface 27 the machine may b'e readily adapted for grinding convex' and corrugated surfaces on rolls as well as grinding straight or concave surfaces.

In connection with the surface 27 of the templet 26 l thereof a horizontal guide element or roller 39 journaled on a vertical axis 40, and the periphery of said roller, like the surface 27 of the templet is hardened, and in addition to this detail the said periphery,- 41 of the roller is turned to such a radius that at no time during the grinding operation will there be more than one point of contact with the templet 26. It is preferable in carrying out the invention to firmly maintain the contact of the roller 39 with the surface 27 of the templet through the medium of a heavy pressure spring .'42 interposed between al1-abutment 43 on the roller end of the slide 12- and a part of the tool carriage 2.

Referring to the general operation of the machine; it is to be noted that in commencing to grind a roll, the grinding wheel 23 is brought to a position corresponding to the transverse center of the roll. The pattern supporting bracket 28 is then adjusted longitudinally on its base 30 until the central pivot 36 for the templet is in alinement with, or properly speaking', opposite the axis of the guide roller 39. Then with the templet 26 adjusted to a position strictly parallel with the longitudinal axis of the roll R, the grinding wheel will grind a perfectly straight surface on the roll, and in order to ob' tain any desired degree of concavity or .convexity on the face of the roll being ground, it is only necessary to swivel or turn the templet on its pivot 36 to an angle` 1, In a roll grinding machine, a bed, a tool carriage movable longitudinally of the bed, 4a vertically arranged templet having an adjustable mounting at one side of the bed,

and a tool holder supporting the grinding wheel and having amember carrying a guide element held in traveling contact with the pattern surface of the templet.

2. In a roll grinding machine, a stationary bed, a traveling tool carriage thereon, an offset support arranged at one side of the bed, a vertically `arranged templet carriedby said support and having a swiveled mounting thereon, and a tool holder supporting the grinding Wheel and having a member` carrying a guide element held in traveling contact With the pattern surface of the templet.

3. In a roll grinding machine, a stationary bed, a traveling' tool carriage thereon, a vertically disposed templet arranged in oiset relation to the bed and having a central pivot support and fastening means, said templet being also provided with an inner pattern surface, and a tool holder longitudinally movable on the tool carriage and carrying a grinding wheel and a guide kelement,'the latter being.

'held in traveling contact with the pattern surface of the templet,

5. In a roll grinding machine, a stationary bed, a tool carriage slidable longitudinal thereof, a vertically disposed templet having an adjustable and pivotal support beyond one end of the tool carriage, a double slide supported on and movable longitudinally of the tool carriage. one of said slide members carrying a grinding Wheel and the other of said members carrying a guide wheel held in traveling contact with the templet.

6. In a roll grinding machine, a stationary bed, a tool carriage slidable longitudinally thereof, an angled supporting bracket held in offset relation to one. side of the machine bed beyond one end of the tool carriage, a vertlcally disposed templet having a central pivotal support on said bracket and also having fastening means, a follower' slide slidably engaging the carriage and movable longitudinally thereof, said follower slide carrying a guide roller und moved under spring pressure toward the templet, a tool holding slide mounted on and movable longitudinally of the follower slide, said tool holder slide carrying a grinding Wheel, and an adjustable connection between the follower and tool holder slides.

In testimony whereof we hereunto ax our signatures in the presence' of two witnesses.

FREDERICK L. BROWN. ISAAC W. SPRINK. Witnesses:

DEB READ STAUFFER, WM. S. LOUCKS.

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