US1404989A - Method of cutting cylinders - Google Patents

Description

1. MARCY.

METHOD 0F CUTTING CYLINDERS.

APPLICATION FILED AuG.I9, 1920.

124049989, Patented Jan. 31,1922,

2 SHEETS-SHEET I.

' akkorde@ J. MARCY. y METHOD 0F CUTTING CY'LIND-ERS. APPLICATION FILED AUGJB, |920.

Patented Jan. 31, 1922.

2 SHEETS-SHEET 2.

fz l

61H20: mags JOHN MARCYQor'nErnoIr-, MICHIGAN.

`aen of'tlieUnited States of America, resid? ing at Detroit,1in the' county of Vayne and State of Michigan, have,` inventedfcertain'V new and useful Improvements in Methods oi? Cutting Cylinders, of which the following" isf I a specification, reference beinghfadtherein" to the accompanying drawings.

Thisinventionrelates .to a. method of cut! i ting` cylinders and vother bodiesh'aving bores; or cylindrical openings which must have the walls thereof true, and as an examplejof suchv a structure there maybe cited a cylinder or4 engine 'block adapted Jtofhave a; piston kreciprocatedtherein; On account of piston ringsl the walls of an engine cylinder "become scored and irregular, and from time to time it is necessary that the.V cylinder walls be recut to insure anon-leakable connection be' tweenY the cylinder walls and a reciprocable piston therein. 1

My invention' aims lto provide means,` as lhereinafter set forth,for expeditiously and leconomically lcuttingl or rie-surfacing the rinl ner walls of a cylinder, either by power or hand, and part .of the operations are' carried A ony with' well-'known .commercial devices, sol

f to carry my invention .intopractice, itis only necessary to provide .certain other devices whereby a cylinder may be accurately cut.

`The various devices entering intomy inl vention and the successive stepsinvolvedin vthe. method of cutting lwillbe hereinafter more fully described and then claimed,v and reference will now be had to the drawings, wherein-f vFigure 1 V of a cylinder showing ay cylinder` gauge therein; A* "A Figi.'A 2 is a longitudinal sectional view of the'cyl'inder gauge;v l 4 Fig. `3 is a plan of the gauge;v Fig. 4 is a side elevation ofla micrometer gauge showing the manner in which it is set by the cylinder gauge; f 5 is a similar view showing the setting of a reamer bythe micrometer gauge; 'y `r Fig. 6 is a side elevation of the ream'er;` Fig. 7 is a plan of the same, and VFigg is a longitudinal sectional view of the cylinder showing the manner of Vusing the cylinder gauge and reamer. l

In the drawings, the reference l.; denotes, by the way of an example, a cylinderv '2, at; any place in is a longitudinal sectional view.

.'Hivrnrnon oncnrrms cY'LInnEns.

Applicationlled August 3.9,` lQZ. Seriall Non/594540. if

' hating-,ja aan are" maar@ afgaat-'laas radius "or: diameter of the4 cylinderl employ Speccation'ofl Letters*(Patent..y l" "Jan, '315 r'eyliaaer gauge which may be' 'of various i forms, but a preferred type has ,been shown in` Figsvl'f and 3. The gaugewcompris'es;

afcylindricalftwo-part bodyf having rafa l diallyf disposedlslidable 'gauge members 4 l andyeachwgauge member maybe iiXed relatively., to-tlie body 3by anyy suitable clampingjmeans', for instance', 4screws f 3a,

clarnpin'g the parts with the gauge members 4'Iftherebetween. :If employ asetting cone 5 for shifting the memberslvwhen thescrews 3a are loose, andvsaid cone yis slidably'xmounted Iony a rod 46' A.carried bythe gaugebody and; sinned` said @dag-ainsi the inner' ends fof" the gauge members 4 by' a sleeve -7 Jand'a nut 8 or'otherrotatable.device.` The@ f rod -6 constitutes meansforplacing the gauge body fin the cylinder Eiland by adjusting the" v vnut Sth'esleeve 7 may be rshiftedv on the rod 6,tocause thesetting .cone 5to distend the gaugemembersfso that .the outer, `ends, of

said fmemberswill' egage the lc'ylinder wall d e cylinder wheretli'e;vvv gauge -maybe placed. f By simultaneously distending'jthegauge members 4 and pos? sibly rotating the gaugeinv the cylinderthe inner diameter of the cylinder can be Oby tained andjsuch diameter' will be represented onvthejcylinder gauge by'y the distance bef tween'jth'e outer endsof diametrically` op-Q has the 'rodv re.-

.posedfgauge members. After this operation,

which represents 'thel first stepo my method, 'y

'the gaugeis removed from the cylinder with 90V i gauge having afscrew v12 thatfmayfbenminutely f adjusted. Withtliecylinder gauge thecylinder gaugecnthefcenter lpin lO it is.

possible to` determine whetherthe microml mdiusfcomm-On 't0 @11 0f ith@ ygauge members eter screw .12 isproperly set torepresenta 4 of the cylinder gauge.` The. micrometer screw :12is -not tightened against the v end ofI the gauge member, but set'sothat the cylinder gauge can be bodily removed, leaving 110V resent the radius of the finished cylinder,

the micrometer gauge set to representa radiusof the cylinder before being cut.

It having been ascertained how much of the surface must be removed from the wall 2 to eliminate-scoring and other imperfections, for instance, the sixty-fourth part of an inch, the micrometer gauge 11 is now adljusted tok increase thev radius represented thereby rone-siXty-fourthpart of an inch.

Various forms of reamersY or grinding` devices may be used in the cylinder 1 for pro- 'Y Y gressively cutting thewall 2 from one endV of the cylinder fto the opposite end and as an example of the reamer which I may' em? ploy, reference will ynow be had to Figs. V5

vto 8 inclusive. The reamer comprises a body 1e having radially disposed jaws or cutters each of which may beheld in an adjusted position by a pin 16 vorY other clamping device. a. coupling member 17 soV that an opera- ting rod 1,8 may be detachably connected thereto, and the rod 18 like therodifmay be rotated by power or hand.

lWith the micrometer gauge 11 set to repthe. unset rcainer is placed on the micrometer gaugeV over the Vcenter pin 10.V VThe setting cone 5 is placed inthe reamer body 14 and ast-he reamer body is Iintermittently rotated Vto place each cutter or jaw 15 opposite the micrometer screw 12, the setting cone is A tapped to shift the outer end of each reamer cutter into engagement with the head 13 of the micrometer screw 12. Each reamer jaw may thus be set so that all of the jaws will have the' same radius from the center of the y reamer body. The reamer body may then be remo-ved vfrom the micrometer gauge, the setting cone 5 removed from the reamer and Vthe rod 185er similar operating device connected toy the reamer; it being understood that each of the reamer jaws has been fixed relative to the reamer body so as not to become accidentally displaced duringV the operation of the reamer in the cylinder.

The reamer is now startedtin one end of the cylinderl 1 to cut or otherwise operate upon the wall 2 of the cylinder, and as before stated, this may be accomplished by power or, hand at the outer end of the rod 18. As the reamer' advances in the cylinder it is obvious that there may be some torque or twisting action of the rod 18,and to' interposed between the gauge 3 and the The reamer body let has sleeve 19 may be` reamer 14, as sho-wn in Fig. 8, and an operating rod employed that will extendthrough 'the cylinder gauge 3 and thesleeve. 19 to permit of the reamer 14 being rotated and advanced in the cylinder 1. In a comparatively short cylinder it may not be necessary to Lagain use the cylinder gauge as a guide for the operating rmeans of a reamer, but when the cutting is performed byihand YI Yprefer to use such aguide to facilitate cut-V ting operation. t ,t

-From the foregoing, it will be observed that I first ascertain the diameter `of theJ` cylinder wall 2 by a radial gauge; second, .utilize the set radial gauge to set a microm-V eter gauge; Y third, reset the micrometer gauge to represent the amount of material to be removed Ifrom the cylinder i wall;Y fourth, using the reset micrometer gauge to set a reamer Vso thatthe reamer may be employed for cutting Vthe cylinder wall, and

lfifth, resetting theradial gauge according to the reset micrometer gauge so thatV the radial'gauge may be used as a guide fork the operating means of the reamer, particularly as the reamer approaches that end of the cylinder farthest from the application or Y source of power.

In' carrying out the various steps of my method of cutting the cylinder I do not care toconiine myself to the type of gauge yor micrometerrshown 'and' it is Vobvious that various formsof rea-mers may be employed7 chang pended claims.

iVhatI claim is Ytherefore my invention is susceptible'to such Oes as fall within the scope of thewap-` 77100 l. A method of cutting acylinderor' similar structure consisting in using a gauge to ascertain the radius of the cylinder to be cut,

resetting the gauge to correspond to the cyl-.

inder radius plus the depth of vmaterial toy be removed, setting a reaml'er to correspond to the gauge, Vusing the reainer toicut the cylinder', and then using ther gauge rin the cylinder as a guide for the reamer.

2. A method 'of cutting a cylinder consisting of using a radial gauge to ascertain the radius of an unground cylinder, setting a micrometer gauge according tothe radial gauge, resetting the micrometer gauge `to include the depth of material to be removed from the cylinder, setting a reamer according `to the micrometer gauge',resettingn the radial gauge to correspond tothe resetv lmicrometer gauge, using the radial gaugeas a reainer guide in the vcylindenand then usino' the. reamer to cut the cylinder,

In testimony whereof I aiiix my signature in presence of twowitnesses.

Y Witnesses ANNA M. DoRR, KARL I-I. BUTLER. Y

JOHN Manor. Y

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