US1064676A - Cylinder-boring apparatus. - Google Patents

Description

6i 'I'. WINE.

GYLINDEB Bumm; APPARATUS.

APPLICATION FILED-"IIE 16, 1909.

Patented June 10,1913` sums-sun! 1j G. F. WINN.

CYLINDER, BORING APPARATUS.

APPLICATION ULEB JUNE 15. 1909y 1,064,676. Bamm June 1o, 1913.

6l BHEHTPSEBET 2.

G. F. WINN.

GYLINDBB BORING APPARATUS.

Entornos FILED 111111115, 1909.

Patented June 10,1913.

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APPLIOATION FILED JUNE 15, 1909.

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APPLICATION FILED JUNE 15, 1909.

APatented June 10,1913.

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' To all whom it moyconccrn:

which the tool head will beautomatically 'citizerro'f the/United States, residing at elevation; ig. 3, a detail sectional View on 'line 3, F ig. 2.; Fig. 4, an enlarged elevational =on the same scale as Fig. 4. looliingdown- UNITED STATE-s' PATENT FFCE.

CHARLES F. WINE, 0F MILWAUKEE, WISCONSIN,

sssmmon To .rosari-.I T.' mzEnsN a;

Specification of Be it known that I, CJLIARLESV F. VVINN, a Milwaukee, inthe cointy of Milwaukeeand State ofWiscon'sin-,have invented certainnewl and useful-'Improvements in Cylinder- Boting Apparat-umol? which 'the following is a specification. f I f y invention relates in general to cylinder boring machines, and niorepartieularly to an'improved borinr bar for locomotive enginecyli'nders, Cor iss engine cylinders .and valves, yvalve chambers, steam hammer cylin-A ders, air hoists, etc. f

yThe primaryobject of my invention is to provide a machine for boring cylinders, in

continually' fed forward as the work of boring progresses, speeds accordingtothe. character of the; work. l v

A further object of my' invention is to provide an improved tool head, which`V maybe varied in diameter, and having thereon tool holders in which straight tools of any desired cross section maybe lirmly supported, and, at. the same time readily adjusted radially.

A further objcct'of my invention is to pro# Vide means for conrenientiy and firmly supporting-the boring bar in operative position upon a cylinder.

A still further object of my invention is to provide an improved cylinder boring mal chine, which will lie comparatively Simple in construction, e-iiicient in operation, and durable in use. 3

M y invention will `he more fully deserilied hereinafter with reference lto 'the accomw panying. drawings, in which the same is illustrated as embodied in a. convenientv and practical form', and in Which-M I Figure l is anend elevation, showing theg boring machine in ope'atii-'e relation to a locomotive, the illustrated parte of the latter being shown iii dott-ed lines; Fig. 2. a iongitudinal section through the cylinder of'a locomotive, showing the boring machine in View, the bar .being shown Vin cross section, taken on line 4, Fig. Q; vFig. 5, a plan View Wardly thereon; Fig. 6,:1 longitudinal sectional View through the feed boit, siiiowmg CYLINDEBBORING APPARTUS.

application filed :une i5, 1969. seal irofsoaaas,

and at different uniform Y porte-d.

. veniently su portion hereof through the usualpiston V,cylinder head. The

f vision land studs.

its position upon the end of the bar; Fig. 7,

Letters Pateiit Paten @ed June 1G, i913;

a sectional View on line 7, Figf d; FigfS,

'a sectional View on line 8, Fig. 6; F ig; 9, an eleva-tional View ofthe tool suppoi'tin head. the bar being shown in section, the p ane of thisI View being indicated 'at l F ig. 10, a sectionalview'on,line-10, FigQQ Fig. 11, a sectional view lon an' enla!" scale, taken through ring Cf, Fig. 12,21'sectionalview'on-line 12, Fig.- 11.

The same reference characters are `used to designate the'saineparts in the scte'ralfgures ofthe drawings.

Reference charactersy A and A?, indicatethe engine 'cylinders of a locomotive. .It will,y however.- be understood that. my in- Fig. 2; and

vention is not limited to boring'engine cylinders, but is adapted for use in boring any cylindrical 'receptacles or chambers.

B indicates tool supporting head is concentrically sp- 'lhe bar B extends through the cylinder to bebored, such, for instance, as the locomotive'engine cylinder A2." The inner end. of the bar may be conporte'd. by ertending a reduced rod opening in the cylinder head A3. A. c01- Alar B is fixed upon the-bai" B and is located box recess of the back reduced portion B3 of the har which extends through theI usual Within the stuffing stalling box a3 is surrounded by a centeringtapered bushing which is heldin position Within the stuffing box' by a gland B2, pro- 1vided Witliopen radial slots thronghwvhich extend bolts Z1 Yusual screw threaded opening in the flange around the stuffing box as for receiving the extend through' the gland B2and engage against the adjacent surface of the flange aroundthe stufling box.

The portion of the har ll which lies outside Vof the front end oi the cylinder, from which the cylinder head has heen removed, is supported by means of a saddle C having Vthereoifi a circular support (l which sur rounds the bar E and supports the same. The saddle C i he conveniently secured to the end of the i' lieder by screws f' passing through the ends thereof into engagement with the iusual. screw threaded openings for the studs which secure the cylinder head in position. Adjnstable centering bolts c. exi, l

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tend through the rino` C' andfengage within Thrust vscrews 3 also the boring bar. upon-which the 78 concentrically into engagement with the Y recesses czfformed in a ring C2 concentrically located Within the 'ring C. The ring' C2 rotatably surrounds, a collar C3 rigidly connected bye key c3 to the bar B. The` collar 5 C? is recessed to permitthe free rotation of the feed rod N between the same and the bar The collar C3 is provided with -side anges @and c5 betr-een v'vhich the ring' C2 is rotatably loca-ted. The ange of is removable, as shown in Fig. l2, to permit the assembling of the ring C2 around the collar C3.

D indicates 1.a frame for supporting the mechanism for rotating the boring bar'. such frame being conveniently in the form of a yoke, the ends D and 1) of the parallel` portions of which are provided with semiv.' circular seats Which partially surround a .7' sleeveEkeyed upon and revolving with the 2() boring bard' and d? indicate caps for the circular bearings around the sleeve E, which may be readily removed to permit the driving gear supporting frame to be detached yfrom the bar when setting up or taking down the bar.

' The sleeve E is lprovided with a. feather or key @which engages within a longitudi- .al groove in the bar B. The end of the gear supportingframe l) 3 0' opposite toits connections with the bar may be conveniently supported byV a' standard F. ther lower end of which is provided With a foot, F adapted to be secured to the underlying supporting surface. The upper, end of the standard is provided with a bolt f which connects the standard with ythe gear frame D by extendingthrough an opening d therein i The standard is preferably adjustable in height in any suitable manner, as by forming the same of two overlapped portions f and f2, which are adjustably connected by bolts f3.

A power shaft G is supported transversely uponv the-two members of the gear any suitable manner, as by means of a belt pulley G 'fixed on one end thereof, or by *any suitablerpower' generator. such as an lair motor, electric motor, flexible shaft. en-

gaging the end g thereof, or a device for rotating the shaft by hand may be attached thereto.. A pinion g2 is fixed upon the shaft G which .meshes with a gear Wheel c2 fixed upon a counter shaft E2 also journaled upon the members of the supporting gear frame D A small gear Wheel e is also fixed upon the shaft E2 and meshes with a large gear E" surrounding and ixed to the sleeve E.

3Q. con1 iect the poiver' shaft G with the vboring 'I bar'serve to reduce the speed and increase the povver transmitted to the bar.

Avtool supportingr master head H concenltricallv surrounds the bar B and is con-l e neeted` to rotate therewith by means ',f a key frame' D. The'sh'aft G maybe rotated in.

T he ineslied gear Wheels which (merativelyv or feather iz, which extends tudinal groove in the bar. is provided with pairs of lugs h2 between which the tools L are received7 a latch L being pivotally supported upon voneof the lugs in each pair and. adapted to engage a bolt Z upon the other lue in each' lpair. thereby firmly retaining the tool betweenl ,the lugs and against the inclined seat besupport the tools When the cylinder to bev In order bored is of minimum diameter. that cylinders of larger diameters may be bored. one or more removable tool supportingr spiders of different diameters are provided. any one of which may be secured to the head lll. (lne of such spiders is shown al'- K which is provided with inwardly projecting ears overlying the radial flange HZ of the head H, bolts f being shown as eX- t-ending through registeringr reamed holes in such ears. and in the tiangre on the master head H. to rigidly secure the spider to the master head. lt is obvious that spiders of various diameters may be secured to the master head H according to the interior diameter ofthe cylinder which is to be bored.

The spider K is provided with spaced lugs [c2 similar to the lugs 71.2 on'the master head between which the tools are supported. latches L being provided to'removably retain the tools between the llugs k2 in the several pairs. The tools are adjustable radi- Ially upon the flange K2 of the spider K by means of adiustmg screws A. extending;

through holes in the inner circular flange of the ring K. as clearly shown in Fig. 10.

`The surfaces between the pairs of lugs on the master head or auxiliary surrounding spider are inclined so that. straight tools L may be employed, and when seated between the pairs of lugs and retained against the inclined surfaces between the lugs by the latches L they Will projectpast the inner surface of the master head or spider, and thereby bore the cylinder to its yinner end Without the use of bent tools as usually heretofore employed in order that the cutting ends of the tools may project beyond .the inner surface of the cutter head. The openings for 'the tools vbetween the lugs are milled accurately of exact. size to receive the tools, thereby enabling' the tools to fit snugly betweenthe lugs and against the inclined into theilbngi i The head llVA neet, V-tlrus preventing Vall chattering vand' rough sind inaccurate working o the tools. ln order that' the mnsterrhed may be forward as: the Work of boring progresses, I provide a screw .threaded rod N which entends through a solid screw threaded nut detachahly secured by cap bolts h3' to the hub H. of. 'the master bend.A The pow tion of the hub H' alining'w'ith 'theopeninn inthe-A nut Ha is recessed as sho-wn in Fig.. 10, while a recess b is provided longitudina'l-liy: in' bor. E to permit 'the' 'screw' threaded rodN- to extend longitudfmally odi the bar, und lie-supported at its inner end in a bearing in the collar. B fixed upon bar. The outer end: of the feed rod. N extends through bearings paralleli: support-ing` mg spaced. apart and. rigidly connected vby posts M"V nliates .M. and l* .2f suchfplates and M* hgvingshoul-ders thereof wenn met egainst 'the inner suraiees of :the plates,y

The poste extend through ope/ninire4 in .the

plates vand are provided with nuts-on )he ends thereof, as shown in Fig; 16. na/and indicate .thenuts the ends of lHierrost "43, While m* indicates` the-nut fon the end of the post M'4 which projects through the plate'Mz, while the' opposite'end of! the post Mt engages within avr rewihreaded open. innV in the plate M. onze bushingzgsfn` n Surround the portions "of the rod kN which extend through the supporting" plates L md M2. The plates M and M?, together with the interposed poets M3 and M4,l .constitute a carriage for thefeed mechanism The plateM vis providedwith as cireulasr lange mf which surrounds theA end of the `ear B and is seeured thereto in any suitable manner,l as by means of. a set screw m. The circular flange-m irs-provided with a cireular opening m alining `with the opening through the plate M and sieurroufndingf the ed N, 'the' inner end of sucb opening m5 oonstitnting a stop'aga'inst wheh a vcoller n lon vthe rod -N engages.`

The portion of 'the rod-N between the plates M and' M2 has-fixed thereon two gear wheels N and N2, the former being vof greater diameter than the latter. The' portion N3 of the rod N which projects beyond the plate M2 has removably ixed thereon a f hand Wheel N* in any suitable manner, as

by means of a .set screw n. A eounter shaift extends through hearings in the platesl Mnnd M2, bronze bushings o, 0 bein-,9; provided around the shaft Where 1tv passes f through such plates. rEhe shaft O' has fixed thereon two gear wheels 0 and O2, the for.-

mer 'being smaller 'than the latter, and be ing of .a 'diameter to mesh with the large naar. wheel N' upon the rod N The gear vvwheel O2 is o a diameter 'to mesh with the gear wheel Nl when thev shaft' O is adjusted axially into position to bring O2 into mesh with the gear wheel N2, The i the gear' wheel inner end of the counter shaft 0 extends into a cylindrical chamber in the end of theA interposed between. a shou'lden thereon and as' fiimedishoulder around thel plunger the tengi'on of such spring serving. to proj t the=`inner-end of the plunger intoengaqe-I ment with 'the annular grooves in the Shaft 0. In order tol axially adjust the shmt O, thel portion lthereof which projects-through the-plate M2 is Vsquared as shown at p", and

is surrounded-by the interiorly sqnared hub l Pf of a crank arm l), the out'ei'vend` of such mnk arm bein-,gt provided with n handle p. A spring` 'latch P2 is secured to the crank arm P and is provided with a puwl adapted y to be projected into anyone of a series oi notchesy p2' formed lin vthe adjacent squared portion of the -shwft-O. It is obvious that by appl-ying pressure to the crank arm P in the direction of' the axis of the shaft O, suchvshfaft may he moved axially and any one of the annular grooves therein brought `iinto regi-'ster with the plunger O. When the annular groove 0' registers with the i plunger, the gear Wheel'O. meshes-' with the ErearA wheel N', while when the ,@erooveo2 registers with the plunger, the-gear" Wlieel` 02 meshes with the gear wheel ;of the gear wheels 01 and 02 are discon- Nz.. Bothnected from the gear Wheels N and N2 4when the groovev 'o3- iegisters with the zplunger.

R indicates nl chain, one lend r of which the crank arm Pto prevent the rotation of the shaft O. Any suitable means, such as .a Weight, may be provided for preventing` the handle from revolving-and :consequently retaining the sha-ft 0 against rotation about its own axis.

The' operation of my improwd.cylinder boring bar is 'as follows; The boring bar is inserted through the end of a cylinder from which the head has been removed, and its inner end passed lthrough the stuffing box in the opposite cylinder head. lThe tapered bushing b is then placed around and centers thel portion of the bar Whieh extends through the usual stuffing bon, and isl held in suchposition by means ofthe gland B2. 'The saddle C is secured to the open end of A plunger Mi-sf anchored toa fixed support and the other end off which is secured to the handle 79 ou the vcylinder by means 'of the. stnds'c. The

ring CV iso lan interior 'diameter slightly greater than' they diameter of the bar in.l order the master hea d H, but when the cylinder is Y of greater diameter, then a spider, such as K, is secured to the cutter head, such splder beingof a size to conform to the cylinderv to be bored. Power is applied to the sha-ft G which is communicated through the train of gearing to tbe sleeve E keyed to the bar B, thereby rotating the latter. As the speed gearing carriage comprising/fthe plates M and M? is -fixed upon the end of the bar, such carriage rotates with the bar, the feed screw-threaded rod N also rotating Wii'lrthe` carriage and bar. As the counter shaft O is located ecccntrically with respect to the bar B, it Will also have a circular path of movemont with the' bar, the radius of such circular path being equal to the eccentricity, of the shaft O relatively to the axis Ofthebar.

The shaft O is prevented from rotating by any suitable retaining meansapplied to the handle p, such, for instance, as the chain R. As the shaft O is prevented `from rotating about its own axis .the rod N will be rotated during each revolution of the lbar B a. distance corresponding to the relativeydiameters of the meshed gear` Wheels on .the shafts N and O. When kthe gear Wheels O and Niare in mesh, as shown in Fig. 6, a revolution of the bar B will carry the gear N completely around the gear O', thereby rotating the gear N a distance equal to the e circumference of the gear O, and the distance which the gear Wheel N is rotated determines the extent of rotationof the rod N, and consequently the automatic forward feed of the cutter'head.

When 'it is desired to feed the cutter head at greater speed, the gear Whel vO2 is brought into mesh with the gear wheel N2 by axially adjusting shaft O, thereby imparting a greater movement to therodN during each revolution thereof. with thebar B. The feed may also be discontinued, if desired, to pcrmit the cutter'head to rotate Without`aXial motion on the bar by adjusting ,the shaft O 'to a position` to disengageboth of the gear- Wheels thereon from, the gear Wheels on the rod N, as, for inst-ance, when feeding by -handaoross the live steam opening in a valve chamber.

It will be observed that inthe operatiorr of my improved boring machine" the key on the master head which engagesthe longi- The standard F is then secured in neotion Withthe master head. The feed nut H3 is solid and is, therefore, rigid and durable and permits va tight fit around the shaft Withoutk lost motion.

The hand Wheel Nis secured upon the end of theshaft N? and used to impart reverse rotation to the .rod N, in order to' Withy draw the head from Within the cylinder.

From the foregoing description it willbe evident that I have invented an improved tools are automatically and continuously ing to the character of the Work; in which the effective diameter of the tool supporting head may be adjusted so' as to readily adapt the machine for boring cylinders of different diameters; in which the boring `bar y 1s convenlently and securely supported in;`

operative relation With the cylinder; inlA which the tools are securely supported upon the cutter head in incline position so as to present the cutting edges at the most etiicicnt'angle, and also so as to avoid the use of offset tools; and in which the feed mechanism is positive in operation and is relieved from all torsional strain.

While I have described more or less in. detail the specific construction 'in Which-I have illustrated luy-invention as embodied, yetit Will be understood that my invent-ion lis capable of embodiment in other specific forms than thatl herein illustrated, and is capable of structural changes. Without departing fro'm the spirit of my invention.

I claim: Y

l. In a cylinder boring machine, the combination With a rotary bar. of. means for supporting said bar in operative relation tothe cylinder, a. tool supporting head mounted upon said bar, power transmitting mecha nism for rotating said bar, a frame support-` ing said mechanism and itself pivotally supported at one end upon said bar,and a's'tzind# ard supporting the other end of said sup porting frame.

2. In a cylinder boring machine, the com-4 bination with a rotary'bar, of means fosupporting said bar in operative relation to a ,.cylinder, a master' tool supporting head aoy ioo

mounted upon said bar. to rotate therewith and to move longitudinally thereon, an auX- iliary tool support removablysurrounding said master head, and means for securing tools either upon said supporting head or upon said auxiliary tool support.

In a cylinder boringmachine, the combination with a rotary bar, of means for supporting said bar in operative relation to a cylinder, a master` tool supporting head so cylinder boring bar, 1n which the cutting` mounted upon said bar to rotate therewith and to move longitudinally thereon, an auX- iliarytool support removably surrounding said master head, pairs of lugs on said Vtool support havin inclined tool seats between the lugs in eac pair, and means for. clamping the tools against said seats between the lugs in said alrs.

4. In a cy inder boring machine, the combination with a rotary bar, of means for supporting said bar inoperative relation to a cylinder, a tool supporting head mounted upon said bar to rotate therewith and movable longitudinally thereon, means for rotating said bar, a screw threaded shaft eX- tending longitudinally of said bar, a nut on Said head engaged by Said screw threaded shaft, al speed mechanism carriage fixed upon and rotating. with-the end of said bar and through which said shaft extends, dif'- erential gear wheels iixed upon said shaft, a

' counter shaft journaled upon said carriage,

differential gear wheels fixed upon said counter shaft, means for preventing t-he rotation of said countershaft and means for axially moving said counter shaft to engage one of the gear wheels thereon with the corresponding gear wheel onv the screw threaded shaft.` Y

5. In a cylinder boring machine, the combinatior. witha rotary bar, of means if'or sup- `porting one end of said bar adjacent the ack enlof a cylinder, ay saddle adapted to be secured to the other end of a cylinder and havin-g a ring surroundin the bar, a collar fixed to said bar, means or rotatably supporting said collar within said ring, said means and collar comprising radially overlapping portions to prevent longitudinal gmovement of rsaid bar, a tool supporting head, means for connecting said head to said bar to rotate'therewith but to move longitudinally thereon, and means for rotating able bolts extending radially through said' ring, asecond ring supported concentrically within the lirst rin by said bolts, a collar fixed to said bar an rotatably engaging said second ring, said collar and second ring having radially overlapping portions to prevent Vlongitudinal movement of said bar, a tool supportingl head, means for connecting said head to said bar to rotate therewith and to move longitudinally thereon, and means for rotating said bar. j

In testimony whereof, I have subscribed my name.

CHARLES F. WINN.

Witnesses:

GEO. L. W1LK1NsoN, W. A. MOREY.-

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