Патент USA US2128416код для вставки
v Aug. 30, 1938. J. H. HOWARD ET AL 2,128,416 BEAMER CUTTER MOUNTING Filed May 13, 1956 2 Sheets-Sheet 1 l @www Aug. 30, 1938. J. H. HOWARD ET Al. 2,128,416 BEAMER GUTTER MOUNTING Filed May 15, .1936 ß.. if@ma 2 Sheets-Sheet `2 2,128,416 Patented. Aug. 30, 1938 UNITED STATES PATENT oFFlcE nEAMEn CUTTER MOUNTING John n. Howard, Huntington Park, and Aurea c. Oatland, Alhambra, Calif.: said Catland assign or to Globe Oil Tools Company, a corporation of California >Application May 13,1936, SV_el'lall No._ 79,491 _l 8 Claims. This invention relates to well reamers and re lates more particularly to mountlngs for the roller -cutters of well reamers. A general object o! this invention is to provide improved practical and particularly eñìcient anti-friction mountings for roller reamer cutters. Another object of this invention is to provide a simple, inexpensive, anti-friction bearing means for dependably rotatably supporting the roller 10 cutter of a well reamer. ‘ Another object of this invention is to provide an anti-friction roller bearing means for sup porting a roller cutter that is very easy and con venient to assemble. 15 A Another object of this invention is to provide a roller bearing mounting for the roller _cutter of a Well tool that embodies means for retaining the rollers in position prior to and during the insertion of the cutter supporting pin through the cutter. y It is a further object of this invention to pro-` vide an improved anti-friction ball bearing means for rotatably supporting the roller cutter of a (Cl. Z55-_73) will disclose the invention embodied in a well reamer of the general character set forth in Patent No.- 2,035,888, issued to1J. H. Howard on March 3l, 1935. It is to be understood that the invention -is not to be `construed as' -limited- or 6 restricted to the speciñc constructions or appli- _ cations about to be described. _ The well reamer illustrated in the drawings comprises a shank or body III to be interposed in a well >drilling string. The body I0 is an l0 elongate member provided at its ends with means for connecting it in the string. In the case il lustrated a. tapered threaded pin II is provided at the upper end of the body I0 and a tapered threaded socket I2 is provided in the lower end'15 of the body. A central longitudinal'ñuid passage I3 extends through the _body I0 from one end to the otherto conduct the circulation ñuid. The intermediate portion I4 oi’ the body I0 is shaped and proportioned to carry the reaming roller 20 cutters I5. The particular reamer illustrated has three circumferentially spaced cutters I5 and the body portion It is substantially triangular in well tool that is easy and convenient to assemble horizontal cross section._ Recesses I5 are pro and that provides for the proper uniform distri vided in the apex parts of the body portion I 4. 25 bution of the load or active forces throughout The recesses I 6 extend vertically or longitudinally the length of the cutter. .and have ilat upper and lower end walls. The The various objects and features of our inven-- inner walls of the recesses I6 are concave and tion will be fully understood from the following curved. The recesses 4I6 may be alike `in size detailed description of typical 'preferred forms and applications of our invention, throughout and shape. 30 - 'I'he reamer cutters I5 are substantially cylin which description reference is made to the ac drical roller cutters. The cutters >I5 are provided companying drawings, in which: Fig. 1 is a side elevation of a well reamer em with suitable teeth or cutting parts Il. Each bodying one form of the Apresent invention. Figs. 2, 3 and 4 are enlarged transverse detailed sectional views taken as indicated by lines 2_2, 3_3 and 6_6, respectively, on Fig. 1. Fig. 5 -is an enlarged longitudinal fragmentary detailed sectional viewl taken substantially as indicated by line 5_5 on Fig. 1. Fig. 6 is an enlarged vfragmentary vertical detailed sectional view il lustrating the cooperation of a roller with the spacer. Fig. 'l is an enlarged fragmentary ver tical detailed sectional view illustrating ,the co cutter I5 has a. central longitudinal opening I8 The several cutters I5 are illustrated as being alike. However, the cutters may have cutting parts or teeth Il of various characters. The lower portions 'of the cutters I5 are preferablyl tapered downwardly and inwardly. 40 The form of cutter mounting means of the present invention illustrated in Figs. 1 to 7, in elusive, of the drawings, includes, generally, a pin 20 extending through each body recess I6, series of rollers 2l in each cutter I5 for rotatably sup- 45 operation of- a roller with a Washer. Fig. 8 is Aa 'porting the cutter on the pin 20, spacers 22 be- , view similar to Fig. 5 illustrating an alternative form of bearing means and Fig. 9 is a frag mentary vertical detailed sectional view oi a reamer illustrating a form of ball bearing cutter tween the series of rollers 2l, and washers 23 at mounting provided by the invention. The improved bearing means of the present in vention is adapted’ to be employed in well ream ers and well tools varying considerably ‘in char acter. In the following detailed description we A extending through it from one end to the other. 35 the ends of the cutters I5. As the means for rotatably supporting the cutters I5 may be iden- ` tical we will proceed with a detailed description 50 of the means for rotatably supporting one cutter I5, it being understood that such description is equally applicable to -the mountings of the sev eral cutters. - . - The pin 2l of the cutter mounting means Íex 2 2,128,416 tends longitudinally through a body recess I6 to carry a cutter I5 and its bearing elements. The pin 20 is an elongate cylindrical part whose opposite end portions are carried by the body I0. An opening 24 in the body portion I4 communi cates with one end of the recess I6 and a similar opening 25 in the body portion I4 communicates 'with the other end of the recess. The pin 20 has one end portion carried in the opening 24 and has its other end portion carried in the opening 25. A stop 26 is provided in the opening 25 to limit the longitudinal movement oi the _pin 20. The stop 26 'may be welded or otherwise _secured in the opening 25. . 15 Y Means is provided for removably locking the pin 2U against movement. A transverse opening 21 is provided in the body portion I4 and par tially intersects the opening 24. A notch 28 is provided in the pin 20 to register with the open 20 ing 21. A lock pin 29 is arranged in the opening 21 to cooperate with the notch 28. 'I‘he pin 29 cooperating with the notch 28 dependably locks the pin 26 against rotation and longitudinal movement. Aset screw 30 is threaded in the 25 outer portion of the opening 21 to hold the pin 29 against a shoulder 3| on the wall of the open ing 21. A cotter keyy 32 holds the screw 36 against unthreading. A reduced opening 32a communicates with the inner end of the opening 30 21 to permit the pin 29 to be knocked out when the screw 30 is removed The cutter supporting pin 20 extends through the openings I8 of the cutter I5 with substantial clearance to leave an scribed is located intermediate the ends of the cutter I5. The washers 23 are provided to space the ends of the cutter I5 and the outer ends of the rollers 22 from the endwalls of the recess I6. The washers 23 surround the pin 20 at the opposite ends of the cutter I5. In the preferred construc tion the washers 23 are square or ilat sided and are received in correspondingly shaped notches 39 occurring in-the end walls of the recess I6. 10 'I‘he washers 23 thus received in the ñat walled notches 39 are held against rotation. In accord ance with the invention a. lip `4|] is provided on each washer 23 to cooperate with the inclined end surfaces 34 of the rollers 2|. The lips 40 are an 15 nular and surround the pin 20. The lips 40 each have a tapered or inclined outer surface 4| for cooperating with the surfaces 34 of the rollers 2| to aid in facilitating the easy assembling of the rollers. The major exposed surfaces of the 20 washers 23 are flat for cooperation with the flat ends of the cutter I5 and the ñat end surfaces 35 of the rollers 2|. In assembling the cutter I5 and thev cutter mounting just described the rollers 2| and the spacer 22 are arrangedin their proper positions in the opening I8 of the cutter. The washers 23 are then placed against the opposite ends of the ' - cutter I5. With the parts in these positions the .lips 36 of the spacer 22 cooperate with the sur faces 34 of the rollers 2| to hold the adjacent ends of the rollers 2| against inward displace ment. In a like manner the lips 40 of the wash annular space for receiving the bearing rollers 2| . ers 23 cooperate with the surfaces 34 of the rollers . 35 and the spacer 22. 'I'he series of rollers 2| are provided in the opening I8 of the cutter I5 to cooperate with the wall of the opening and the pin 20 and-thus ro tatably support the cutter I5' on the pin. The 40 rollers 2| are elongate cylindrical hardened steel members of the proper length and diameter. In the preferred construction illustrated, there are two series of rollers 2| surrounding the pin 2li and spaced apart longitudinally of the pin to be 45 within the opposite end portions of the cutter |5. In accordance with Vthe invention the opposite ends of thevanti-friction rollers 2| are‘bevelled or tapered having inclined surfaces 34. The roll ers 2| may have relatively small ñat faces 35 at In the form of the invention being described _the rollers 2| are positioned so 50 their extremities. ^ that their outer ends are at the ends of the cutter I5. . The spacer 22 is provided to space apart the two series of rollers 2|. 'I'he spacer 22 is in the nature of a tube or sleeve surrounding the pin 20 and fitting the cutter opening I8 with suitable clearance. 'I‘he opposite ends of the spacer 22 are shaped for cooperation with the 60 rollers 2|. A lip 36 is provided on each end of the spacer 22. The lips 36 are continuous or annular. The inner sides or surfaces of the lips 36 are continuationsof the internal wall of the spacer 22. The outer sides or surfaces 31 of the 65 lips 36 are tapered or inclined to cooperate with the tapered surfaces 34 of the rollers 2|. .The cooperation of the surfaces 34 and 31 facilitates the easy assembly of the rollers 2| in the cutter ’I5 as will be subsequently described. YFlat nor 70 mal end surfaces 38 are provided on the spacer 22 at the bases of the lips 36. The end faces 35 of . the rollers 2| are adapted to cooperate with these surfaces-38. As the rollers 2| of the two series 75 are of the same length the spacer .22 just de 2| to Íhold the outer ends of the rollers against inward‘displacement. Thus the lips 36 and 40 engage the ends of the rollers 2| to retain the*y rollers in position. 'I'he cutter I5 containing the rollers 2| and the spacer 22 is then inserted in the recess I6, together with the washers 23 at its 40 opposite ends. The washers 23 are, of course, entered in their respective notches 39. The pin 20 is passed inwardly through the opening 24 and through the series of rollers 42| and thel spacer 22 to have its end portionreceived in the opening 25. 45 As above described the lips-36 and 40 retain the rollers 2| in -place and thus facilitate the easy insertion of the pin 2U. Following insertion of the pin 20 the pin 29 is arranged in the opening 50. 21 and is secured in place by the screw 30. The cutter mounting meansillustrated in Figs. 1 to '1, inclusive, of the drawings is particularly »'simple and effective. The` spacer 22 and the washers 23 are simple parts and cooperate with the rollers 2| as just described to greatly facili 55 tate the assembling of the tool. The rollers 2| operate to support the cutters I5 'with a minimum .of friction. The parts of the cutter mountings as well as the cutters I5 may be' easily removed for replacement. y un Fig. 8 of the drawings illustrates a form of the invention similar to that just described. The cutter supporting pin 20 and the spacer 22 may be identical with the pin and spacer of the previously described form of the invention. The anti-fric tion rollers 2|* are of the same shape as the roll ers 2| but are slightly shorter than the rollers 2| to have. their outer ends some distance inwardly from the ends of the cutter I5. The rollers -2| have tapered or inclined end surfaces 34a. In the 70 embodiment of the invention illustrated in Fig. 8 of the drawings a spacer ring 45 is arranged in each end portion of the cutter opening> I8 to space the ends of the rollers 2|ß from the washer 23°. 'I'he rings 45 are provided with annular lips 408 75 2,128,416 similar in shape and operation to the lips 40. The washers 23“ are identical with the washers 23 except that they are devoid of the lips 40. The lips 36 and 4I)s cooperate with the inclined end 5 surfaces 34‘ of the rollers 2 I*l to retain the rollers in position during the assembling of the cutter on the tool. Except for thedetails just-described the ¿construction illustrated in Fig. 8 is «identical 3 n sleeve 50 to have its inner end portion received in the opening 25. The pin 2i)Il may be locked in place with the pin 29 in the same manner as the ' pin 20. , The form of the invention illustrated in Fig. 9 C1 of the drawings dependably supports the cutter I5 for rotation with a minimum of friction. The balls 5I are- retained in proper' spaced relation in with that illustrated in Figs. 5 to ’I inclusive, and the openings 54 to assure the proper distribution - has the same mode of operation. of the forces. The taperedopenings 54 of .the _ 10 sleeve 50 retain the balls 5I to facilitate the easy assembling of the pin '20“ through the cutter. It is to be noted that the several forms of the inven tion provide for the retention of the anti-friction elements in their operative positions during the assembling of _the cutter on the tool body I0 to greatly facilitate the assembling of the tool. ‘ Fig. 9 of the drawings illustrates another form of roller cutter mounting means. 'I‘he construc tion illustrated in Fig. 9 of the drawings includes, generally, a pin 2lia extending through the body recess I6, a bearing sleeve 50 surrounding the pin 2liEL within the opening I8 of the cutter I5, steel balls 5I carried by the sleeve 50 and washers 52 spacing the ends of the cutter I5 and the‘ sleeve 50 from the end walls of the recess I6. The pin 20° may be identical with the pin 20 and extends through the‘opening I8 of the cut ter I5 with clearance, leaving an annular space to receive the bearing sleeve 50. 'I'he bearing sleeve 50 is an elongate tubular element. The 25 sleeve 50 surrounds~ the pin 2lia with suitable clearance and has suitable clearance with the wall of the opening I8.- The opposite ends 53 of the sleeve 50 may be lilat and normal and in the same planes as the ends of the cutters I5. In ac 30 cordance with the invention a multiplicity of openings 54‘is provided in the sleeve 5I) to re ceive the balls 5I. 'I'he openings 54 are spaced circumferentially and longitudinally toprovide for the proper distribution of the load on the cut 35 ter I5 and pin 20a. In the preferred construction illustrated the openings 54 are arranged in `a spiralled row or series. 'I‘he openings ~54 arey shaped to facilitate the retention of the balls 5I in the sleeve 50. The openings 54 are tapered having 40 outwardly flared-or divergent walls. _ ~ The anti-friction -balls 5I are provided in the openings I8 to support the cutter. I5 for rotation Having described only typical preferred forms and applications of our invention, Wedo /not wish to be limited or restricted to the specific details hereinset forth, but wish to reserve to ourselves any variations or modifications that may appear to those skilled in the art or fall within the scope of the following claims. Having'described our invention, we claim: 1. In a well tool, a body, a roller cutter having an opening, a pin carried by the body and extend ing through the opening, series of anti-friction ' rollers in the opening surrounding the pin, said rollers having reduced ends, a spacer between said series of rollers, and lips on the spacer cooperating withy the adjacent reduced ends of the rollers. 2. In a well tool, a body, a roller cutter having an opening, a pin carried by thebody and extend ing` through the opening, series of» anti-friction rollersv in the opening surrounding the pin, said rollers having reduced end parts, a spacer in the cutter between the series of the rollers, lips on the spacer cooperating with the adjacent end parts of the rollers, washers on the pin spacing the ends of the cutters from the body, and lips on the , washers cooperating with the adjacentl end parts with a minimum of friction. The balls 5I are -oi’ the rollers. steel balls of suiiicient diameter to properly co 3. In va well tool, a body, a -roller cutter having ” operate with the pin_20‘ and the wall of the cutter an opening, a pin carried by the body and extend 45 opening I8.- The washers 52 may be fiat surfaced ing through the opening, series of anti-friction washers for cooperating with vthe ends of the rollers inthe opening surrounding the pin, said cutter I 5 and sleeve 50. The washers 52 are pref rollers having reduced end portions, washers on erably flat sided to fit the notches 39 whereby they - the pins spacing the ends of the cutter from the ` 50 are held against rotation. The openings 54 being body, and lips on the washersl cooperating with 50 in a spiralled series support the balls 5I so that they. do not'track in their contact with the pin 20“ and the cutter I5. adjacent end portions of the rollers. 4. A construction4 for rotatably supporting a ' roller cutter on a Well tool bodyincluding, a pin In assembling they construction illustrated in _ to be carried by the body vto extend through the 5 Fig. 9 of the drawings the 'sleeve 50 is introduced or started in the opening I8 of the cutter I5. When the sleeve 50 is in a position where its low ermost opening 54 is adjacent the end of_ the cutter I5 a ball 5I is inserted -in the said opening . 60 andthe sleeve is moved downwardly so that the ball is’ entered inthe opening I8. The tapered wall of the 4said lowermost opening 54 prevents the ball from' falling inwardly in the sleeve while cutter, series of anti-friction rollers surrounding the pin to rotatably support the' cutter thereon, the rollers having tapered end surfaces, a spacer in the cutter between the seriesof rollers, and annular lips on the spacer having inclined sur faces cooperating with the a'ljacent tapered end 60 surfaces of the rollers. - 5. A construction for rotatably supporting roller cutter on a well tool body including, a pin the'wall of the putter opening I8 of course pre to be carried by the body to extend through the vents the ball 'from falling outwardly. A ball 5I cutter, oi' anti-friction rollers surrounding 65 is then inserted in the next opening 54 and the the pinseries to rotatably support the cutter thereon, sleeve 50 againmoved downwardly to bring the~ "the rollers having tapered end surfaces, washers ball witthin the opening I8 of the cutter. This spacing the ends of thecutter'from the body, .an procedure is repeated until a ball 5I has been nular lips on ,the washers having inclined sur arranged in each of the openings 54. The sleeve " 50 is then entirely or substantially >entirely within faces cooperating with the adjacent tapered end 70 the cutter I5. 'I‘he washers 52 are then arranged in the notches 39 and the cutter I5 carrying the sleeve 50 is inserted in the recess I6. 'I'he pin 20a is then arranged through the opening 24 and the surfaces of the rollers, a spacer in the cutter be'- A tween the -series of rollers, and annular lips on the spacer having inclined surfaces cooperating ` with the adjacent tapered end surfaces of the Y rollers. 4 2,129,416 y adjacent tapered end surfacesfof the rollers, ' roller cutter on a well tool body including, a pin washers on the pin'at the ends of the cutter, rings 6. A construction for rotatably supporting a l v to be carried by the body to extend through the cutter, series of anti-friction rollers surrounding the pin to rotatably support the cutter thereon, on the `pin in the end portions of the cutter spacing the rollers fromvthe washer, and annular ridges on the rings cooperating with the adJacent on the pin at the ends ot the cutter, rings on the tapered end surfaces of the rollers. , 8. A construction for . rotatably Asupporting a pin in the end portions of the cutters spacing the Arollers from the washer, and annular ridges on roller cutter on a well tool.. body including, a pin to be -carried by the body to extend through the roller cutter on a well tool body including, a pin ends of the-.cutter from the body, rings on the pin betweenl the rollers and the washers, and an nular lips on the rings cooperating with the end 15 the rollers having tapered end surfaces, washers the rings cooperating with the adjacent tapered cutter, anti-friction rollers surrounding the pin 10 10 to rotatably support the cutter thereon, the rollers « end surfaces of the rollers. ' 7. A construction for rotatably supporting aA having tapered end surfaces, washers spacing the to be carried by the body to extend through the cutter, series of anti-friction rollers surrounding the pin to rotatably support the cutter thereon, the rollers having tapered end surfaces, a tubular spacer on the pin spacing the series of rollers, an I nular ridges on the'spacer cooperating with the surfaces of the rollers. -JOHN H. HOWARD. ALFRED c. CA'ILAND.