Патент USA US2131698код для вставки
Sept. 27, 1938. w. F. GROENE ET AL 2,131,698 ' CRANKSHAFT CHUCK Filed Oct. 18, 1937 \ |=| \m E: L5 INVENTORS. v BY - ' wkt'T'z'azassi'zi ' ATTORNEY. ‘ Patented Sept. 27, 1938' 2431;698 - STATES ‘2,131,699’. ' .CRAN‘KSHAFT CHUCK; _ ‘William F. ‘Groene and Walter ' ' I Meyer, Cine cinnati, Ohio, assignors to The IL. K2 LeiBlond ~ g Machine Tool Company, Cincinnati, Ohio,;.a~ . corporation of Delaware; _} it. . r t I Application October is, 1937', Serialf‘-No."169,549 ~I ' '_ ' 8 Claims; '- ifI‘his'invention pertains to certain modi?cations and improvements in chucking devices of a char: acter ‘shown in our'copending application Serial 5 Number 121,509, ?led~ January 21, 1937. More speci?cally .the inventionypertains‘ to “improve ments in applying the chucking ring‘ to the pr'e— machined peripheral locating area of the crank shaft preparatory to loading the assembly in the center drive ring gear. 10 7 . V ' i y' ' An object of o'urinvention is to provide in a chuck which utilizes a chucking ring engaging around a peripheraltlocating .area' of a work piece, an arrangement for positively locking the chucking ‘ring aboutfthe‘ work piece before said 15 assembly is inserted in the‘ work spindle. . Another object‘ is to (arrange achuck, which utilizes a chucking ringlengaging'v around a_ pe ripheral locatingarea of a work piecehinxsuch a way that the chucking ring is at'all times main 20 tained in proper engagement with the work in dependent of any driving action of the‘ work spindle on the chucking ring.’ ' f " Further objects will appearin the course of the following‘ description ‘of the ‘drawing in which: 25 _ Figure I is, an axial View partly inijsection on line I of Fig. II of a'ring gear chucking’arra'nge ment utilizing .a machined peripheral locating areajon a crankshaft web, clearly showing the chuckingjring applied to‘ the crankshaft. Figure II_is a View partly in section on line II—II ‘of Figure I clea’rlyshowing points of con-. tact between the crankshaft, the chucking ring; and‘ thejdriving gear. '. t The arrangement comprises a chucking ring I 35 comprising the arcuate members 2 and 3 hinged together about a pivot pin 4. 'The member 2 has a bearing surface 5 and the member 3 has a bear ing surface 6 adapted to nicely ?t around the peripheral locating surface ‘I of the crankshaft 40 C, when the two members 2 and 3 are swung to gether about the work. After the members are so engaged with the surface ‘I an eyebolt 8 piv otally mounted on a pin 9 ?xed in the member 3 is swung toward the work C‘, its upper end having a tightening nut Ill which venters the slotted end ll of member 2 and is tightened down to ?rmly bind the two members.2 and 3 on the peripheral locating surface. The chucking ring I can pos itively drive the crankshaft clockwise as shown in 50 Fig. I by abutting contact of the surface I! of the member 2 with surface l3 of the crankshaft web [4 having the peripheral locating area 1. After having thus properly applied the chuck ing ring I to the crankshaft C, the crankshaft is 55 inserted axially into the driving spindle or ring (01. s_2-4O) ' ' gear ‘I5 while held'i'n‘aeposition turned slightly ’ in a clockwise 'directibn'from the position shown in Fig. I. The ?nished ‘convex surface l6 and I1 ,7 on the outside of the7'chucking ring member 3, contacts‘thef respective mating surfaces l8 and l 9 formed by the respectiveconcave plates 20 and‘ e 21 y?xedwto the'ring'gear l5 by suitable screws 22 to properly centérj the'chucking ring I and thus the crankshaft C-‘o'n its'proper center of turning. Substantiallydiametrically opposite the sur facesl'llirand I‘! ‘of the chucking ring member,‘ 3 is mounted a roller 23 on a vstud 24 ?xed in mem- _V- l ber‘iZandTcOn?ned from axialmovement on the stud’2'4 by'the side walls 25 and26 of; the pocket 21. ~ The roller*23 has a flatted portion 28adapt- ‘ ed to engage‘the angularly disposedsurface '29 of the by a screw driVingwedgeSO'?Xed 3i. ‘Set screws 32~and in'the ring 33 threaded gear l5 in thermemb'er' 2 projectlnto the pocket 21 and engage intonotches 34 and 35 respectively are‘ adapted to "befadjusted vto ‘permit only su?icient' rotation of the‘ roller 23‘ to allow proper engage ment of the ?atted portion :-28"thereof "withthe - surface 29 of driving wedge 30 while at the same time ‘keeping.therolleifproperly positioned for said engagement when the r'ing‘l is removed from the‘ring gear l5 during loading and unloading of the-work; ' t ’ ' ‘ ' ' ~ After having axially-loaded the crankshaft c" a I , with therchucking ring I applied thereto as'de scribed,‘the crankshaft and‘w chucking ring ‘are rotated countereclockwise, as‘ shown in ‘Figt?-I, on the-bearing'portions' l8jand i9 either by man ‘an ual'rotation of the crankshaft orb'y starting rota; tion of the driving ring gear‘ 15 in a clockwise" direction or‘ normal driving direction, whereupon .7 the ?atted portion 28 vof the roller 23 is brought ' into engagement with the angularly disposed-sur face 29 of the driving Wedge 30 to thereby cause f 'l the ring gear 15 to drive the chucking ring I and, the crankshaft C in clockwise direction. The engagement of the driving wedge 28‘with roller 23 causes the driving ring with its crankshaft web gripped in it to be urged radiallyrtoward the surfaces l8 and IS in the ring gear. to assure ac 45 curate, positive maintenance of centered position during rotation of the crankshaft. ‘ > ‘It is to be noted in this arrangement that the chucking ring is'fully engaged and clamped up‘ tight about vthe peripheral locating area» 1 before the work with the ring attached is inserted in the driving spindle I5. “By this arrangement the maintenance of proper engagement of the chuck ing ring and the workpiece is completely divorced 55 > 2 2,131,698. from the driving action of the ring gear IS on the chucking ring I. Having fully set forth and described our in vention, what we claim is: i 1. A chucking device for crankshafts compris ing, a rotatable work spindle, a chucking ring ap plicable to a ?nished locating area on a crank ing members, means on said members for holding them in ?rm engagement with premachined lo- ' cating areas on a crankshaft web, means on at least one of said members adapted to engage. locating surfaces on a rotatable work spindle for accurately centering said chucking ring and said crankshaft on said work spindle, some of said shaft, abutment means ‘on saidspindle adapted 7 locating surfaces on said‘workspindle serving also to" cause said workv-spindlerto drive said-chucking to engage saidchucking'ring whereby said chuck ring, and means on said chucking ring for posi 10 ing ring is driven in properly located position on 10 ztively'driving said crankshaft. said spindle, and means on said chucking ringito ,6..ln .a chucking device for crankshafts, a maintain said crankshaft properly gripped-in. said _ chucking ring independent of the driving action chucking ‘ring comprising’ clamping members, vmean-saomsaid members for holding them in ?rm of said spindle. I ‘ ' ' V2,'A chucking device for crankshaftsgcompria‘ ieng'agement >withmremachined' peripheral locat 15 ing a rotatable work spindle, =a chucking ring ing areaslonrw crankshaft web, means on at least applicable to a ?nished locating area on a crank *oneof said=membersadapted to engage arcuate lo shaft, abutment means on ‘said spindle-adapted catingsurfaces gonna rotatable work spindle for accurately centering said chucking ring and said to engage said chucking ring whereby said chuck ‘crankshaft on said work spindle, some of said 20 ing ring is driven in properly located position on 20 locating surfaces son ..said .work .spindle =serving said 2spindle, means :on .said ,i chucking ring .to maintain rsaid crankshaft .properly- engaged and also .to v.cause-lsai'd .work .spindle .to drive ., said chucking -,ring,.andlmeans .on.said..chucking ring chucking ring engaging (an ‘unmachined ‘portion ‘ f or~_.positively driving .said‘ crankshaft. ' .7...In lapchucking .device .for ,crankshafts, .a 25 of ‘said crankshaft .to-positivelydrive said gcrank chucking ring‘ comprising .a pair .of clamping located in said'chuckingivringvand meansronsaid shaft. . i ~ 7. - _ ‘3. .In'a chuckingdevice for? crankshaftsa chuck ing-ring comprisingéa-pair of semi-circular mem 30 ripheral ‘locating areas on .a crankshaft .web, surfaces on. said members adapted-to be engaged with'peripheral locating surfaces on a crankshaft gage arcuate locating .surfaces .on \-a ‘rotatable when swung toward-each other?means on‘said ing ring adapted ,to engage mating. concave sur faces on a rotatable work spindle; and means on said ‘work spindlerto zdri-ve ~ said; chucking ring and to vmaintain proper engagement of-the surfaces of .said chucking ringand said work "spindle. 40 them in; mm engagement _.with ,premachined . pe bershinged together, at one of their ends, concave member-s forlholding said members engagedzwith said-crankshaft, convex surfaces on~said chuck 735 members, Lme'ans .on .said members .for .holding .4. In. a; chucking device for crankshafts,a chuck ing ringv comprisinga pair of semi-circular- clamp ing ‘members, ‘meansson said . member forholdng _ them'in-?rm engagement withjrpremachined lo eating areas-on'la crankshaft web,rm,eans on at 45 least one of vsaid ‘members adapted to engage a2 meanson .one .of >said,menibers adapted .to .en work spindlefonaccurately centeringsaid chuck. ing ringv andsaidcrankshaft on-saidwork spin dle, means associated .with said .other' clamping member andsaid workspindle to .;force said clamp 3.5. ing, ring into engagement .with .said: arcuate ~lo eating surfaces and ‘.to drive saidchucking .ring when .saidspin'd-lei is rotated, ».and-means on. said chucking shaft. -for ypo‘sitively .driving .~said ~ crank;v , , , _ , ' ‘.8...In_-a chucking device “for .crankshafts, ta chucking ring, means ‘.on .said chuckingring for clamping :..said .ring ‘.to .a ‘premachined .locating surf'aceon .a web .ofiacrankshaft, ,means on’. said ring to engage .aslo’cating ' surface .on. a rotatable 45 locating surfacesaonla rotatable work spindle for work spindleiforcenteringsaid chucking ring and crankshaft on said work spindle, some :of .said work sriindlewherebyIsaid: chuckingringis main accurately. centering ; said chucking ring . and ‘said ' said crankshaft in .said lwork.spindle,'-and .means locatingjsurfaces on .said work spindle serving 50 also to cause said work .spindlejtofdrive said chucking ringrand means onsaid ‘chucking ring for positively. driving. said . crankshaft. ..5.1In Ia .chucking device for .crankshafts, ,a chucking. ring comprising. a; pair. of hinged. clamp on 1said=ring_to.engage ,adrivingabutmenton said tained in .lproper engagement with said ‘locating surface ,on .said Jspindle ,when said spindle is rotated. v . i . . WILLIAM ' F. GROENE. WALTER 1R. ..1VIEYER.