US2330184A - Inside hone for cylinders - Google Patents

Description

Sept. 21,' '1943. R. R. HAUSE 2,330,184

INSIDE HONE FOR CYLINDERS Filed May 5, 1941 3 Sheets-Sheet 1 I g 'g Ff'- .#76 :1 v ya 75 lllllllll 5x 35 @si A A yg a N :15x .2,9 y L30 ids' 28 j un 27 i Y j 1 g v is ,32

f 27' "'I 70t- `f'//////A www g.

Sept 21, i943- R. R. HAUsE INSIDE HONE FOR CYLINDERS Filed My 5, 1941 3 Sheets-Sheet 2 sept# 21, i943 R. R. HAUsE `2,330,184

i INSIDE HoNE FOR cYLINDERs Filed May 5, 1941 5 sheets-sheet 3 'wmv' 3.5? E Heu/cse! 7n 73. l f

l Ptented'SeptZl, 1943 Y iff Y msmn HoNn Fori ort-moans VM talph liause-,Monti)olier,` Ohio',y assignertto"`1` n l n VReconstructi'on Financek Corporation, .Clevelan'tl, 0hio,. a'corporation of the United States 'Application May 5, 1941, serial No. 391,932

2 Claims.. (o1.

My invention relates to inside hones forI cy-linders, especially cylinders as used inthe lmanufacture of oil Well pumps.'` Cylinderhones, in y vuse before the advent oi the present invention,

have, `fo-rvtheir main objectives, to smooththe 5 -surface or inner Aperiphery Aof a cylinder after it has been prepared for-honing by boring, reaming or grinding, consequently removaly of quantities of metal, duringv the honing operationghas been unnecessary and'thereforethe honing'tools-lov of current'rnanufactureare not adaptedv for this operation. In the conditioning of bores ,ofv elongated bodies, such asn cylinders used i-n oil well pumps, it is essential that the 'honing tool be capable of producing a true bore, which frequently' l5 means the changing of abore kof varying diameter to one of uniform' diameter, rand this diameter -rnust be constant `throughout the length of thepump cylinder.

positively function to remove substantial quantities of surfacemet'al'where .necessary, the eiiec-` tive varea of the tool being coextensive with the length of the cylinder.

Other objects of this invention are to provide -r a hone equipped with abrasive e1ernents,fth`e latter being sol constructed and mounted thatthevmaybe used almost; in their entiretiesgto pro- Vide a hone the abrasive elements of which are at all times ciroumferentially supported at their peripheries, the circumferential supports being replaceable; to provide yieldable meansin theI toolforascertaining and-controlling pressure between the abrasive elements and the Work while the tool is in operationy'to provide a'tool so construotedy that successive gangs of abrasives will `travel beyond the ends of the cylinder or other work,with each strokev ofthe tool, positively'fiO effecting a mathematically exactbore circumf Y ference'from one terminal of the'cylinder to the other; to provide a" tool embodying simple yet positive means for normally holding the 'abrasive elements in a retracted position; to provide a v toolvwherein the abrasive elements are circumferentially and diametricallyy supported in a manner-allowing for the use of abrasive element holders of simple land inexpensive construction;

to provide a hone of rigidl construction of considerably greater length than diameter with a multiplication of abrasive elements, over standard type hones,` especially adapting the -honeof A principal yobject of my' invention therefore isto' produce'fZO an inside :hone which in addition to removing inter-sticos* and other surface inequalities, Will "s1-Lista Y "of lmany times thecustomaryamountot'metal over a given period. l

Additional objects @Ennemi/entren win bea-pparent from'l the Vfollowing-descriptio'n-`of the present-preferred form 'ofV the invention, wherein.

Fig. lv is a side elevational view of an inside hone constructedv` in accordance with the present `invention illustrating its application; va portion 'thereof being bro-ken away to disclosea detail;

Fig. 2 is va detail enlarged sectionalv view taken i on'the line 2-`-2.ofvFig. l -loolringin 'the direction of the arrows, showing-to advantage'thefinterior kconstruction of the upper part o1 the hojningtool oithepresent invention; y y v Fig. 3 'is ya similar view'taken'on the line 3 3 fof Fig'. f1 looking lin thedireotionfo-f lthefa'rrowsy showing-to advantage an intermediate *port-ion of thetool; f

Fig. Liris a similar view taken on the line 4'-"l oiFig.` l'lookingin the direction of thearrows, showing to advantage the'lower partof the honing tool, and disclosing the yieldableI means'em- 'played for holdingthe 'abrasive'expand-im; elements VfromV dislocation when the tool is not in Fig.y y-5 is a detail fragmentary'elevationalView of la honing tool constructed inv accordance with the present invention, an abrasiveelementbeing removed from one of the honing units n,to` disclose, in elevation, presser blocks ior-oneof the abrasive elements;

Fig. 6, is a cross'sectional view taken `on tirel line'E-G of Fig. 5 looking;k inthe directionjof the "arrows, showing to advantage'a gang ofabrasive elements mounted in thehone body with ,the Y .'abrasive expanding elements engaged" therewith;

Y Fig. '7 is a perspective view of yoney rof the abrasive elements; y l i Fig. 8 is -a deta"Y `enlarged.l sectional view taken on the line 8-8 of Fig 2 looking in she direction lof the, arrows, showing the interiorof a portion oithehonijng structure at right-'anglesgto,the

- showing in Fig., 2, the abrasive elementsbeing shown in an expanded position;v

Fig, 9 is a similar view to that shown in Fig.y 8`

illustrating theabrasivel elements in @contracted l' position;

Fig.' 10 isa cross sectional view ltaken on the vune 'la-it of Eig'. 2 locking `in thefdire'etionjof the arrows'showing to advantage .the Ymanner f of mounting anplungerengaging-shaft the'hone lFig. 1l. is a crossfsectionalview takenfon the and to provide a tooladapted for"tlieremoval*55*therarrows,f showingwto advantage the spring the present invention for use onlong cylindersim i "line l Ii l of Fig. 5 looking 'inthedirection of .are of standard construction.

means employed for normally retaining the abra.. sive elements in a retracted position;

Fig. 12 is a perspective view of the plunger control shaft illustrated in Fig. 10, and

Fig. 13 is a perspective View of one of the abrasive engaging wedge blocks.

In order to illustrate the application of the invention, I have in Fig. l shown in dotted lines a. cylinder or casing I This work embodies a type of cylinder or casing as used in pump manufacture, the cylinder being elongated, its length being many times that of its diameter.

necessary correspondingly to employ a tool, the length of which is many times its diameter. This permits the tool to be simultaneously rotated and reciprocated during the axial movement of the tool throughout the entire length ofthe work, portions of the tool being movable even beyond the terminals of the work. The tool which I have worked out is especially adapted to the particular kind of work herein referred to and is generally illustrated in the drawings at I and consists of a multiplicity of parts, many of which The tool cornprises a connection I6 which forms the top of the tool and is adapted for operative engagement Awith suitable power means, in a manner well-known in the art. This connection may be of substantially standard construction, the lower end thereof being internally screw threaded, adapted for engagement with complemental external screw threads formed on the upper joint I'I of the tool. The 'connection I6 may be held in a predetermined position by a jam nut I8. An intermediate portion of the jointl I'I is provided with parallelly arranged elongated slots `I9 .lops or serrations being adapted for engagement with the peripheries of the key shaft 20. The

vlower end of the joint Il has a plug 23 slidably mounted thereiny the plug housing a plunger. 24, the latter being yieldably mounted on a helical spring 25. As illustrated to advantage in Fig. 2, the spring 25 is arranged in the axial recess formed in the plug 23. The spring 25 normally urges the plunger 24 upwardly into engagement with the key shaft 20, a portion of the latter being attened, as indicated at 2G, to positively prevent casual rotation of the shaft when engaged with the plunger. Rotation of said shaft 28 may be effected by a suitable key, engageable in either` one of the squared terminal recesses 2'! of said shaft. The lower end of the joint I'I is provided with an external annulus 2B below which is mounted a resilient band 21', the latter rbeing sleeved on a ring 28, `as shown to advantage in Fig. 2.

The band 21 has fingers 29 extending upwardly and downwardly therefrom, the upwardly extending fingers being engaged with the annulus 23 while the downwardly extending fingers are engaged with the base plates 3G of abrasive elements 3i, the latter forming a part of the uppermost unit 32 of the instant honing tool. The tool is composed primarily of a plurality of units similar in construction to 32 f.each consisting essentiallyof a cylinder provided To true' inner peripheries of work of this character it is with a plurality of elongated recesses 33, each of which is adapted for the reception of one of the abrasive elements 3l. The inner wall of each of said recesses 33 is provided with a pair of openings 34, each of which, in the present instance, is shown to be of ovoidal configuration, each opening being adapted for the reception of a wedge shaped expanding block`35. The units 32 are, as shown, axially arrangedand alternate units are provided on their opposite ends with the resilient bands, the fingers 29 of each of the intermediate units extending upwardly and downi wardly into engagement with the base plates 30 of the upper and lower proximate units. It is consequently only necessary to equip every alternate unit with resilient bands, the resilient bands on theends of one unit being all that is required to retain the gang of abrasive elements o f said unit as well as the gangs of abrasive elements on the next upper and next lower unit in au retracted position.

The lowermost unit of the tool has, issuing therefrom, an externally screw threaded nipple 36 upon which is threaded the upper end of a housing 31, the housing being provided at its lower end with a bearing 38 through which a rod .39 is movably mounted. Thelrod 39 has a collar 43 fixedly mounted thereon, at a point remote from its upper terminal, the collar providing an abutment for the upper end of a coil spring 4I, the lower end of the latter being preferably engaged with a floating band 42. The lower end of said band engages the upper `end of a coil spring 4I', the lower end of the latter engaging the inner terminal of thebearing 33. The springs 4I and 4I normally urge the rod 39 upwardly, the top of said rod abutting the lowermost of a series of conical expanding members 43. The cones 43 are arranged in superimposed relation in the bores of the units 32, the reduced end of each cone being nested in a corresponding recess formedV inthe enlarged end of an adjacent cone.

, The primary function of the springs 4i and 4I' movable tool from being accidentally displaced when theto'ol is not inA use. v

It is ofthe essence of importance in the present invention that the abrasive elements be con- Vstructed to` permit almost complete use of the abrasive substances and with this end in view, I herein employ abrasive elements of special construction each of which consists of a bar of abrasive material secured in any suitable manner ment at all points.

. by a guard strip M. These strips are preferably detachably .engaged with the unit bodies as shown in Fig. 6. With the exception of the circumferential support 44 and radial supports for the abrasive bar, the latter is free from engage- In other Words, the outer face, outer terminals and opposite sides of each abrasive bar is free, permitting engagement of the latter with the work. As is manifest, the constant expansion of the abrasive elements permits consumption or" the abrasive bars practi cally down to the base plates 30. The guard strips 44 may be renewed at any time in an apparent manner.

For expanding the abrasive elements nIAprefer While I have herein directed a preferred form The fluid the blocks 35 outwardly. Since a pair of the blocks engages each abrasive element, in a particular manner, a uniform pressure is exerted on each abrasive bar from one extreme end ofthe latter to the other. The pressure is constantly checked and may be increased or diminished at the option of the operator.

With the present tool I have found that it is possible to remove several times the amount of metal from the Work, which may be now removed with conventional tools, in a given period of time. 'I'his permits so-called straightening" during the honing operation to produce a mathematically correct bore circumference from one extreme end of the work to the other. Replacement of the abrasive elements may be done in a facile and expeditious manner, by manipulation of the fingers 29.

of my invention, I am of course aware that various changes may be made therein, especially in the details of construction, proportion and arrangement of the parts Within the scope of the claims hereto appended.

-What is claimed is:

1. An inside hone for elongated cylindrical bodies comprising a plurality of units each embodying a gang of radially movable elements, means for normally retaining the abrasive elements in a contracted position, expanding means for said elements, means for holding the expanding means from displacement when not in use, and independent means for exerting pressure on the expanding means to force the abrasive elements outwardly against the resistance of the rst said means.

2. For use in an inside hone, a unit provided with a plurality of recesses, an abrasive element vengageable in each recess, the elements each ini cluding a base plate and superimposed bar, one side of the bar being flush with one edge of the plate, and a guard mounted on a wall of each recess for slidable engagement with the flush side and edge of the bar and plate respectively.

RALPH R. HAUSE.

Images