US1118798A - Grinding-machine. - Google Patents

Description

A. L. PRICE.

GRINDING MACHINE.

APPLICATION FILED PBB.11.1914.

Patented Nov. 24,1914.

2 SHEETS-SHBET 1.

A. L. PRICE.

GRINDING MACHINE.

ARPLIGATION FILED FEB. 11. 1914.

1,1 18,798. Patented Nov. 24. 1914.

2 SHEETS-SHEET 2.

ALFRED L, PRICE, OF MACON. GEORGIA.

GRINDINGJVIAGHINE.

Specification 01 Letters Patent.

Patented Nov. 24, .1914.

Application filed .Februnr'y l1, lOlcL. Sieriol No. 818,101.

' To all whom may ricer n Be it known tl at l, ALFRED L. l 'uicn, e citizen of the Unitec States, residing at Macon, in the county'of Bibb and State of Georgia, have invented new and useful l nprovenlents in (irindingdiliachines, of which the following is a specification.

This invention relates to improvements in grinding machines and has particular nppli cation to n machine of thciclass described for grinding engine cylinders so as to re move any imperfections therefrom.

Incnrrying out the present invention, it

is my purpose to provide a. grinding nui-- chine wherein the abrcding tool wi l travel bodily in a. circular path so ns to ellcctively grindn circular object and wherein the tool will be moved longitudinnlly so that the entire surface of the object being ground will be acted upon. lit is also my purpose to provide a. mechinc of the class described wherein the frictional contact between the ebrnding too] and the surface to he clcznicd may be varied so that noy wear on the nbrnd- .ing element incident to the driving onerill/10H may he cmnpenseted 'lor. Fur-t erinore, I aim to provide o machine of the type set forth which will be capable of nrnnunl operation. and which may be connected up with a. source or power when such is do sired and wherein the nh oding tool. will revolve planet inshion sons to travel around the surface of a cylindricnli object to client the griniling thereof, and, move longitudh nnlly of such object so as to insure the complete grinding thereof. 'A further object of the invention is the provision of a. grinding tool which may be readily and conveniently conninitcd with the cylinder to be ground; which will be entirely nnitomatic in operation and which may be operated and maintained at aminimum ex 'pense.

With the above and other objects in view, the invention cons s in the construction, combination and or i .uureinent of partsherc innfter set forth in and telling within the scope-of the claims.

In the accompanying drawings; Figure 1 is a view in si cloclcvnti on Of n grinding mw chino constructed in accordance with the present invention, the some being show n as applied to a cylinder. Fig. 2 is 21. top plan view of. the machine. Fig. 3 is a vertical sectional view thercthrough. Fig. -l is n horizontal sectional view on the line -'.l--lof l ig. 1. Fig. 5 is a. similar view on the line of Fig. 1. Fig. 6 is a view in elevation of tho wedges and connecting rod. Fig. 7 is a view in elevation of the adjust in key.

et'erring now to the drawings in detail, 1 designates a cylindrical housing constructed of any suitable material and provided at one endwith radially extending feet 2 formed with elongated slots 3 adopted to is rcive securing bolts -lwhereby the housing may be secured to the open end of the cylin dcr to be ground. Formed on the inner wall ol the housing 1. at the opposite ends thereof are annular flanges 55, 5, while fitted within the flanges :3, 5, and capable of rotation therein are cylimlricnl collars 6, (3, connected to each other For simultaneous movement througlrtl'ie medium of a web 7 partially circular in cross section and disposed within the housing '1. Mounted eccentrically within the collars 6, G and arranged longitudiimlly of the housing 1 is a circular sleeve 8 'lOl'lllULl crceutricolly with n longitudinal passage 9 non-circular in cross sec tion and slidnbly mounted within the possnge 9 is a tube 10 having the outer wall thereof corresponding to the cross sectional contour of the passage. and the inner wall drculnr in cross section. One end of this tube 10 is disposed within the passage 9, while the opposite extremity thcrcot' normally projects out of the passa c. Disposed within the tube 10 and ndaptccl for rotation tlicrein is a shaft 11 capable of sliding movement within the passage 9 and equipped, 1161- jacent to the inner end of the tube 10 with n collar 12 adopted to bear upon the said end of the tube so that the latter will move outwnrdly f the passage in the longitudinal movement of the shaft, thereby reinforcing the shaft. Suitably fastened upon the end of the shaft 11 adjacent to the outer extremity of the sleeve is on obrading tool in the form of :1 wheel l3 ndnptcd to revolve in the rotation of the shaft and travel longitudinal ly of its ZtXlS in the longitudinal. H'Hlfli'lflfllll'r of the shnfti ln practice, the housing 1 is fastened to the open end of the cylinder as illustrated in' Fig. 1, and the pmiphcry ol' the abrnding wheel 13 frictionnlly cn 'ug'cs the inner wall of the cylinder so that in the rotation of the nbradin wheel under the notion of the shaft the inner well of the cylinder will be ground. In order to vary the frictional e g g m t between the inner wall of the cylinder and the periphery of the abrading wheel the sleeve 8 is rotated withinthe collars 6, G and, owing to the shaft 11 being eccentrically mounted within the sleeve, the periphery of the grinding wheel is moved to ard or away from the wall of the cylinder according to the direction of movement of the sleeve. For the purpose of so rotating the sleeve I employ, in the present instance, a gear wheel ll fixed to the outer end of the sleeve, that is the end of the sleeve remote from that adjacent to the cylinder being ground, and seated within a recess formed in the adjacentcollar 6, and a key 15 having the stem thereof formed with teeth 16 and adapted to seat within a recess 17 formed in the collar 6 contiguous the periphery of the gear wheel ll, the teeth 16 meshing with the teeth of the gear 14. By means of this construction, it will be seen that when the stem of the key is inserted within the recess 17 and the teeth 16 in mesh with the teeth of the gear 14 and the key rotated. the gear 14' and the sleeve 8 will be revolved with the effect to increase or decrease the frictional contact between the periphery of the abrading wheel and the wall of the cylinder. according to the direction of rotation of the key. To maintain the sleeve 8 stationary within the collars 6, 6 subsequent to the rotation of the sleeve under the action of the key any suitable means may be employed. In the present instance,

wedge-blocks 18. 19 are interposed bet een the inner walls of the rings or collars 6, 6 and the adjacent extremities of the sleeve 8 and these blocks are interconnected through the medium of a rod 1-) screw threaded at one end and equipped with a nut '20. Thus, when the nut 20 is tightened the wedge blocks 8 are drawn into the collars 6, 6 with the effect to bind against the sleeve thereby effecting a rigid connection between the sleeve and the collars.

In the embodiment of my invention selected for illustrative purposes, the driving mechanism for the shaft 11 carrying the abrading wheel comprises a shaft 21 journaled in alining bearings 22 carried by an arm 23 projecting outwardly from the housing 1 and suitably connected thereto, or formed integral therewith. This shaft 21 is arranged at right angles to the housing, and is adapted to be connected up with a source of power, while upon one end of such shaft is a bevel gear .2 meshing with a similar gear 25 fast upon one end of a shaft 26 journaled in bearings carried by the housing 1,

the shaft 26 being arranged in parallelism with the housing and at right angles to the shaft 21. The end of the shaft 26 opposite that equipped with the bevel gear 25 is disposed in proximity to the collar 6 formed with the aperture 17 and such end of the shaft is equipped with a gear 27 meshing 27 is an arm 28' and pro ecting upwardly from such arm adjacent to the periphery of the gear 27 is a stub shaft upon which is retatably mounted a pinion 29 meshing with the gear 27 and a gear 30 fixed to the pinion 29. A second stub shaft extends upwardly from the arm 28' at the outer end thereof and mounted upon the last-mentioned shaft is a pinion 31 meshing with the gear 30, and a sprocket wheel fixedto the pinion 31,

while splined upon the shaft 11 is a sprocket wheel 33 and trained over the sprocket wheels 32 and is an endless chain 34 adapted to revolve the shaft 11 in the rotation of the sprocket wheel By means of this construction, it will be seen that when power is applied to the shaft 21, such power will he imparted to the shaft 11 and the latter revolve with the effect to actuate the abrading wheel within the cylinder.

ln order to slidethe shaft 11 longitudinally so that the abrading wheel will traverse the wall of the cylinder lengthwise thereof any suitable mechanism may be em ployed. In this instance, a shaft 35 is journaled in alining bearings carried by the housing 1 and the outer end of the arm 28 respectively. Fixed upon the shaft 35 is a sprocket wheel 36 while fixed upon the shaft '21 is a sprocket wheel 37 and trained over the sprocket wheels 36 and 37 is an endless chain 38 by means of which power is imparted to the shaft 35 in the operation of the shaft 21. Fixed upon this shaft 35 is a pinion 39 meshing with a rack bar 40 and one end of the rack bar 40 is fixed to the outer end of the shaft 11 through the medium of an arm 41, while the rack bar is held in engagement with the pinion 39 through the medium of a suitable guide within which the rack bar is capable of sliding movement.

Thus, as the shaft 21 rotates to revolve the shaft 11 and actuate the abrading wheel within the cylinder, motion is transmitted to the shaft 35 to actuate the rack bar 40 and so slide the shaft 11 whereby the wheel 13 110 moves longitudinally of the cylinder as well as circumferentially thereof.

lit is to be understood, of course, that the driving mechanism for rotatln the shaft and the mechanism for sliding t e shaft are so timed relatively to each other that the abrading wheel moves longitudinally of its axis at proper intervals with res eat to the planetary motion thereof. In t e present instance. the shaft 11 works within an arm 42 fastened to the upper end of a bracket 43 carried by the housing 1 and bearing against the sprocket wheel 33, such arm actin to hold the sprocket wheel in proper posi ion.

@ne ruin of the chain 34 is preferably 1:;0

journaled Wlifiliii said sleeve, an abrading tool connected to one end of said shaft,

means for revolving said shaft, a rack bar parallel with said shaft, a connection o'etvveen one and of said rack bar and shaft, a pinion meshin with said bar, means for rotating said pinion to slide said shaft Within the sleeve, means for rotating said collars, and driving means for operating said last means and said last shaft simultanemisly.

10. In a grinding machine for eylinclers, a cylindrical housing, means for connecting said housing to the open end of the cylinder,

1,1 iaaoa collars Within said housing and spaced apart 16 rotating said shaft, means for sliding said 20 shaft longitudinally Within said sleeve, and means for rotating said collars.

In testimony whereof I aifix my signature in presence of two witnesses.

1 ALFRED L, PRICE. Witnesses Cams. T. MILLER, WiLnY Havana.

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