Патент USA US2404149код для вставки
July 16,-, 1946o ‘ ' D. R.'_TR1NK|_E ` CONTOURING 2,404,149 MACHINE ` original Filed Aug. ,20, 1941` ¢ ` 2 sheets-sheet 1 F193 IM - 202 555 „j 55055/ Z0] v .53’v '5 i y u `INVENTOR ' 5MM/Í? ` BY . ATTORNEY Patented July 16,1946 2,404,149 UNITED STATESv PATENT OFFICE 2,404,149 ooNToURING -Dallas Rhea Trinkle, Dayton, Ohio, assignor to yMemo-Trinkle‘.Machine Co., -San Francisco, lC_alif.„a corporation of California Original application August 20, 1941, Serial No. " 407,670, now Patent No. 2,365,365, dated Decem ber 19,1944. Divided and this application Feb-' ruaryl 1, 1943, Serial No. 474,265 1 . This invention relates to the art of metal Work in_g and more particularly to meansforeffecting contouring or die sinking, orother operations to provide a given outline> or shape, the presentap , plicationbeinga division Aof myco’-pending.appli_ cation, Serial No. 40_7,670,`filed August 20,51941, „now Patent No. 2.365.365, Agranted December 19, _ 19,44, which in turn was 4a continuationin part ._ofzmyprior application, Serial No. 291,872,.ñ1ed 2 Fig? isahorizontal section on the lineJ-l of Fig.,_6; , Y Fig. ßis a horizontal section on the line 8_8 'of _6; , Fig. `9 is asectionfon the line `9-,9 of Fig. .5; and, ^ Fig. 10 isa section on the line lil-¿I0 of Fig.,»1. Referring more particularly to thedrawings, a portion `of `a metal cutting machine is shQWn, pro August 215, 1,939, and now Patent No. 2,283,240, .10 vided yvitha cuttingtool vembodying the _present Y ' ' invention. The machine ,may be of the character Q_ne object of the inventionresides inthepro ,as more particularly 44described in my prior Patent ,vision of a tool which is particularlyadapte'd to No.` 2,283,240. The numeral |16 vdesignates a por _carry out contouringor >die sinking «'.ìperationsy tion ofthe frameof such a machine, this fframe Vofthe tcharacter,referred to inmy prior patent being adapted tosupport a work carrying `>table apoye mentioned. which can be moved in ahorizontal plane„prefAAnother object is theprovision .of atool adapt Íed to -providea rapid.intermittentcutting opera- . erably under the lcontrol vofarecord operated de .greeted Mey 19.19.42. lvice. However, it will beobvious .that the work A._tion, Hwith .the .Work ,and -.tool , relatively located can be moved in any> other suitable manner. »As `by means `~of a guide bushing aiîording a guide .20 the vWorkis moved,V it. is >supported from ubelowfby orl supportiorgthe tool atV a pointvery close to the lmeans of the plate 202, lreference numeralî20| A_.worlr, >whereby a tool such as an end mill is being applied to the work itself.' . adapt/ed tov provide an eifectivecuttingaction. Another object is the provision of ‘a reciprocable „rotatable tool-having la, shank arranged in a guide ,bushing and Vhaving , an, enlarged cutting portion `rat, the end of the shank, in .combination ‘with v',I‘hetool assembly as >shown in Fig. 1 is an end ~~mill, the tool lbeing given „both a vertical recipro -catory niover‘nent'` and a rotary movement las will The Work _is `adjusted I_or „be described later. ’ Amovedintime with ,the reciprocatory movement means V.for `yieldingly urging'. the bushing inthe » kdirection of .the enlarged .cutting portion; Another object` of the invention is the` provision ,or optimum ,working conditions lof the cutter by ‘ 90 of theiool so thatV the work isstationary during ,the actual cutting portions of the successive cycles ofV operation. . , . rI'he Aend _milling tool, see Figs. 1 and l2, is continuously kñushing ,away the chips and lubri Amountedfor both rotation and for reciprocation. ,cating the `cutter to keep thecutting edges clean yFIld mill 4,0 isv provided with shank 4| of reduced and keep the .euttercooL " diameter vwhich has a ground and lapped fit Aother objects andadvantagesof the inventiony .35 .Within a bushing 42,.whose lower end abutsthe „will A,be Yapimrent fluted portion 40 lof the tool. The ground-,and 'the accompanyingfrom drawings, the „following andthedescriptionI appended .Claims . . _ ` “Il lapped :tit provides a clearance inthe order of one hundred .thousandths of ' an inch` between g the „In thev drawings, end ymillshemkand theíbushing .4.2. In this -Way Fig. 1 is a vertical transverse section through tool is >accurately centered in the bushing theupper, part ,of a cutting machine ,having cut-f" `the and substantiallyno >side play is present. jBush ting .means embodying lthe .present invention; Fig. 21s _an'enlarged view _of aportion of V,the ing v42 is also provided with a ground and lapped .fit withinpan outer guide lcollar 4,3` having an en _machineshown 1; loweruend 44 _with a precision lapped nt in pige is aifra‘gmentarysecuon view illustrating 45 larged a seat 46 of a clamping sleeve 41. :The upper _end vl.the mounting ofthebottom „portionofatoolfor ' of collar v.43 also> is l provided „With >a precision $1.1@ machine; lapped Viit _Within „thesleeve 41. ` 1 Fig. 4 is ahorizontal sectional view onthe line v.Lubricating means are provided „for insuringan , oflubricant to the bearingsur Fig. v.5 is a sectionalview 4generally similar to 50A >adequate,supply faces `of ,the tool and its mounting means, Be „,Fi‘g, ,1, showing the> Aconstruction `andmounting " tween bushing 42 and collar 43 an oil passage is I.ofpa piloted end mill; ‘ IFig. >6 isa. ñgu?e ciview similar to Fig.r5, show ing .the construction _andmounting ofa Äpiloted «f_broách:;,~_ __ ç f provided at either side by means of vertical grooves 48 in bushing 442, communicating with .annular grooves 49 in'collar 43.` From upper 55 groove 49 aLplurality- of radial passages»- 50 lead 12,404,149 3 4 work when not clamped thereon to prevent chips from the upper rends of vertical passages 48 to entering between the surfaces of collar 43 and the work. Means are provided for circulating oil under.pressure tothe work to flushaway and dispose of the chips which would otherwise interfere with the cutting operation, and to keep the cutter cool. Oil under pressure is forced from pipe 59 through space 50 and passage 53 into oil space 52. At an annular groove in bushing 42 about shank 4| ` to supply oil to the bearing surfaces thereof. The annular grooves 49 are fed through a plurality of i openings 5| fromV an annular oil space 52 provided between collar 43 and clamping sleeve 41. f Space 52 in turn is fed through radial passages 53 from ¿ annular groove 54 on the outer surface of clamp‘ ing sleeve 41, which communicates with vertical the lower end of space 52 an annular groove 232 passage 5tr in bearing sleeve 51 press fitted in arm io Vrin shoulder 44 is provided from which a plurality ` '58 of frame I0. rlîhe oil is supplied through lead pipe 59 in a manner later-described,r sothat the ofdownwardlyconver-ging passages 233 lead to the lower surface of collar 43, with their lower ends converging sharply to direct the oil against 15. -the cutter. Certain of the passages 233 are bearing surfaces between bushing 42, collar V43, ~ sleeve 41 and shank 4| are all continuously sup. ' plied with lubricant. The normal position of end mill 40 with respect Y always vOpen. toi-spray directly against the tool. In-addition radial grooves 234 at the lower end lto bushing 42 is shown in Figs. 1 and 2 where the .f . of each passage 233 provide for feeding of oil to bushing 42 is against the shoulder provided at the upper end of the fluted portion where itv is the tool even when the direct spray is prevented by the work, and the tool is withdrawn immedi-V maintained by springA 0| compressed between 20 ately above the work. Thus the cutting edges of bushing 42» and the hub 02 forming part of a uni the tool are always cleaned of chips and a low versal joint 63. Thel upper side of universal joint cutting temperature is maintained. 63 `is connected `to a tubular rod which is con y Referring to Fig. 5, a, Apiloted end mill con struction is shown in which the end mill‘is posi nected at its upper end by universal joint with "a suitable drive shaft which serves to rotate the 25 tively guided and supported both above and be end mill through the drive connections described low the work. The tool includes shank 410 which f »andusually the rate of rotation is in the order of is secured by set screws 411 in hub 02 of a uni l1500~>to 2500 revolutions per minute. versal joint similar to theconstruction shown in Y' The'entire tool assembly is spring urged down Fig. l. The shank 41.6` is guided in the Asleeve'42 `«wardly and its vertical movement is- controlled 30 in the same manner as in the previously described " throughpower driven cam means and» a counter-` Vend mill and is provided with a iluted portion 418r and a lower pilot 41S. The fluted 'portion 418 is shown in aposition raised above the work, inwhich position the lower pilot 419 is Still slid acting-»spring means one oi'which controls the - upi movement and-theother the'down movement off-»éthe-"tooLl The tool'dr-ive need'not be further explained here'as it is more »completely described in? my prior» patent above r-referredfto ï ably engaged with a die 480 with which it'has a ~ f ground and lapped fit. The die 480 has a ground " The sleeve 41, see Fig. 1-, is-»provided with a and lapped fit >within the collar 203 which is simi lar to that shown and described in connection posedvratchetwheels |3| and |32which are sepa with Fig. 3. Asv shown, the» fluted portion 418'is ratedby acollar` |33 and secured by a clamping 40 provided between machined annular grooves, and operated to «collar |34. V'I’heseratchet wheels arev provides end cutting edges at its lower end and provide a rotationalfcontrol- of the sleeve 41. a shouldered stop for spring urged bushing 42y at pair ‘of vertically spaced apart >oppositely dis A Above the ratchet wheels, thesleeve 41 is provided with/¿collars which VKprovide thefwork clamping meanshoperatingto positively hol-drthe work vagainst movement during the cutting `*stroke of itsV upper end. workA whilethe tooliis out of engagement there with to >pe'rrnii‘fthe step-by-steprmovement ofthe 50 - ` It will be noted that the work 20| is positioned between the> work clamping sleeve 41 and flange 202>of lthe work supporting collar 203.Y Collar 203y has a lapped precision 'fit within bushing~206 which-is pressed in boss 201 ofA arm 208» ofthe frame l0. The arrangement kis such that the _ tion of` nut 491 is maintained by spring urged always supported by the collar flange 202, rather 60 clamping of the work bygguide collar 43, its lower locking pin- 500. ' , Referr-ing-to-li‘igs, 6 to 8, the broach 498'com prises alg'shank having "cutting section 50| and lower pilot portion 502» of‘the'shank. It will be noted that the successivelyracting' lips of `the-'cut end surface «projects slightly beyondfthe endsur- I - If desired, the machiner may be equipped with aY broach of spec-ial construction,4 in'whi‘ch event the depth adjustment control becomes a control an. annular 'groove engagedrby »a split collar‘499 held in closely.spaced'relationship between nut 491 and the end of ram 494. The operating fposi »than by therwork table,rwhich-mere1y serves to -lo cate the work. In order to providefor the actual i greaterdepths without side deflection. At; its'V upper end broach'490, Figs. Bland 8,'has ing sleeve 41 and work supporting collar Y203an'd the'fpart'of ‘the work being cut by the tool is Í'I’heïwork clamping means operates in a timed relation to the reciprocating drive for the tool, ~ for rotative positioninglof the broach. work is clampedrbetween guide collar~ 43 in clamp? Y faceof> sleeve 41. ' guides, namely bushing 42 .and die 480, the end mill fluted> portion 418 is rigidlysupported against side-wise thrust and can'beemployedfor cutting the tool@ and its» withdrawaland to ¿release the work. » Because both itheshank and ïthe pilotA have 45 ground and lapped fits` with their respective tingfsection »50| are made up of a plurality of 65 >cuttingteeth 503 which are staggered Y.from one -and to' Nprovide for its `clamping movement the sleeve 414 carries a threaded collar2| |- adjustably j mounted thereon and held in place by lock nut 70 2|¿2..VV Suitable levers -2|1 through their engage cutting lip to the next to reduce contactïwilth’the work and also to 'provide oil passages as Vwill presently be described.y ` _ - j To i provide forv mounting 'of' the broach' for end wise sliding movement 'butvv to prevent rotation f exert. «a downward"y thrust on sleeve `>41 sor that other than the record-controlled ï positioning thereof,v the broachi» is provided with opposite 1on the‘work.: Dur vguide collar 43 is“pressedagainst ` gaged by opposite keys 501 of respective upperand ment with theY upper flanged faceof collar 2||, LingV normal operations,y .colglanI 43 _floats ’on the ‘» gitudinal 'Y key-Ways ï 500 which» are' slidably f en v2,4.;04449 5 iò'wer die" assemblies-toa; :sus .which are» mention 'in construenous` K_eys‘soir have upped nts in lthe upper end, (see,1ï‘ig.'2f)".j;.'1‘he resulting; angular. po.-> sitioning on misalignment f'of; the` tool shank-is ac commodatedíby -the :universal joints. Linï its.. drive keyways. " Each die» =assembly includes 'split die segments 5`|| between which the keys 50'| are held and about which clamping'ring 5|2 engages. ",The die assembly is constructed as follows: the keys '501 are rplaced in position between'the die seg as described in my prior patent...v -l '_y g ' , : . îv ' I -. , `Inthe .end milling` and broaching operationsthe Work is clamped rigidly between guide. cr`J11arq4I‘l` and collar 203 while the cutis being..madefand mentsf5|| inside the'ring 5I2, whichisshrunk the tool is being withdrawn and is thereafterffree onto the inner assembly and thereafter 'ground for' accurate _feeding movement prior. to the next with respect to the center of the >keys to provide 10 cutting stroke. Because. the ‘end mill-issp'ring ‘an accurate lapped lit within the `sleeve >4l and driven in its downward cutting movement, zthe the collar 203, respectively. l ‘l » I -' ' > tool will not be broken if. presented to a greater ' 'The cutting portion 50| has a closeclearance thickness of metal than it can cut. The cutting with respect tothe «associated die segments, whne of ¿the work takes place at a pointïver'y. closely the"v opposite rounded* portion 4has substantial 15 adJacenty to, the i bearingësupporti l or „ guide" bush’ clearance providing an oil passage entirely around mg to'prevent any lateral deflection of fthe to'ol; In actual .practice precision iinish'esï have been obtained with, for. example, a IA'/ cutter working _the broach while it is withinr `thedie.` To supply oil'to the lower die assembly to flush andiclear ,the breach, the die segments _5H and ring 5|.: are provided with aligned radial passages 5| 6, which communicatewith annular passage 5|'|, having a seriesV of passages 5|8 communicating therewith through 1" steel that.ïcompare‘favorably with' 20 constitutes a preferred embodiment of the inven tion, it is tobe understood that the invention is from an> annular passage 5|9 in collar 203A which is „supplied with lubricant >under pressure from the pìp‘e1520. . . ; ' notlimitedto .this precise form of' apparatus, vand 26 that. changes may be made therein with'out‘de _The' upper die assembly is provided with oil parting from `the scope óf the invention which 'is through _the same channels as the end‘mill and the oil is continuously forced out through the d1e assembly around the broach by the pump- pres sure, and additional pressure >is provided by the rain 494vupon its downwardvmovement when the breach starts cutting.l ` ‘ ` precisionground ' .While the formsurfaces. of apparatus ` herein: - 1 ' rdescribed defined in the appended-claims. : What'is claimed iszÍ» ' ' . . ` " "" l ' ' 1v1. In a machine,- of >the vclass described; a’ re 30 ciprocable tool having a shank and- 'anïenla‘rged cutting portionproviding ía. shoulder b’elòwis‘aid ` shank, tool meansv ` r mounting*_ » including a support ' To." provide for rotative adjustment of the having an ‘ :axially '.‘movable‘ guidé "bushing- en_' broach, upperdie assembly'j 500 is connected by ld_ovvel Din 52| to sleeve '4l-,1. and'other clamping screws, may also be provided Wengßgeihe 'iop groove Wall .of the die, see" Fie. ¿_1. "lf‘hus-»the broach can befrotatively adjustedstheiçWer dle gaging said shankabove said> cutting pf‘irti‘onÃfor` relative endwise movement ofthe shank inthe bushing,- and'mean's urging'said bushing against` said shoulder, whereby 'saidto'ol'is supported 'adi' .assembly ’rotating freely 1119992?? 2,93 Simultane ously with- the rotativeadjustment'of the broach .2. In combination, a reciprocable toolfhaving jacentsaidcuttingportion. 40 ‘f 'i i a shank andan enlargedcutting~ portion; a‘gúide and the upper die assembly. Lower die assembly bushing: engaging said shank and"providin`g for EUS-pmjectsslightly above ,the> collar 203 to secure the clamping thrust from sleeve 41 through the rotation and.` relative endwise movement'- of the ` tool, a'supportïfor said'guidebushing;` and Imeans' upper die assembly 508. for yieldingly urging said bushing in said support If desired, the machine may be equipped with 45 tiin 1the direction of the enlarged portion of the a center drill for locating the centers of the holes in the lower surface of work. -For this purpose >3. In combination, a rotatable end mill having a shank and a milling end forming a shoulder the sleeve 525 below the collar 203 is mounted for thereon, a guide bushing in sliding and rotat endwise movement, and carries a rotatable sleeve 521 which is journaled therein by spaced bearings 50 able engagement with said shank and adapted , 528. Bearings 528 may be pre-loaded by means of to abut against said shoulder, and work clamp 1ng means slidably and rotatably guiding said screw retainers 529 which may be locked in ad bushing. v . justed position in the same manner as retaining nut 491. Shaft 526 extends through sleeve 521 in 4. In a machine of the class described: a which a suitable center drill v530 may be remov 55 frame having work supporting means thereon andk an apertured portion spaced therefrom, a. ably mounted. A special screw-connected exten sion 526A may be employed for installing and re sleeve mounted for endwise sliding movement;> in said apertured portion, a collar secured in said moving drill shaft 526. Shaft 526 has a ground and lapped fit within collar 203 and projects'up sleeve; a `bushing mounted for endwise and ro wardly into a die 53| having radial passages 533 60 tative movement in said collar, a reciprocable for supplying oil to the drill. tool having a shank slidably and rotatably en-` ToV provide for vertical adjustment of the center gaged with said bushing and an enlarged lcut drill the sleeve 525 may be provided with a rack ting portion providing a shoulder for engagement 531 engaged by pinion 538 carried by a shaft 539. by said bushing, and means yieldably urging said Shaft 539 is journalled in boss 201 and has a suit 65 bushing to follow said cutting portion. able hand wheel for manual raising and lowering 5. In a machine of the class described: a of the drill. frame having work supporting meansV thereon In order to provide for an adjustable angular and an apertured portion spaced therefrom, a. clearance in cutting, blanking and punching dies sleeve mounted for endwise sliding .movement or to provide draft for other dies, patterns, or 70 in said apertured portion, acollar secured in molds, a special guide collar 43A is provided hav said s1eeve;ra bushing mounted for endwise _and ing its outer surface and ends identical with the rotative movement in said collar, and 'a recipro standard collar 43 but having the axis of its cen cable tool having a shank slidably and rotatably tral bore extending from a. position concentric engaged with said bushing and an enlarged cut with the lower end to an eccentric position at the 75 ting portion providing a shoulder for engage oo . ' zizi/begins; 7 ` last liaxinggoilïfaconductin‘g: passagiesâthereixifiwith. movements means fr urgingff said bushings» ëgßmäs‘e' l thetoutletginësaid collar.fdirectîngáthefoiL-towatd» ï said cutting portions 6; f .InaY asmachineffof: ` ' said . sl-ioulde'rf»y ands a-à- Work». engagin ~ classi# desci‘ibed; »clampingv t membenfinafwhich @said-s.gnidetv bushing?> istsl-içlablv i‘e l c'xprocablœtoot havingsa :shank andfanzëenlai‘ged ‘ carried:fortendwisezmovementáf1 » 4 Y. 10.»‘In combination,ga;,reeiprocableá«tool/:having aishankfandf. anafenlazegedfv cuttingfppptionßáangmide bushing ».-engagfingf .said ,shanksandc-,pi‘ovidingg for: ' cuttingïportiomprovidin 'iacshoulder belowsaid ` wor-k1’ engaging-t1 clamping@ member-î a: rotation f.; and@ relativei endwi-sa. movement.- of/Vlf the tool, lsaivzl'f:guide-fbushingffhavingffa?fdiaisnete _subis Dßrtemimsaid;clampingßmemberi and AVnioimzti'ng stantially »larger than theaïdiameteng.oafwttíétcutê ` sains tool-§-A fomu reeiprooatiîomaj mea-rissv yi‘etdingly tingzyportionsf‘.- of@ - the-2> tooL» r_means ,forn .vyieldiïnglyë \ urging-'1said?lcmshingwE againstiçsaidashouldeníandàa ‘ n series'nof‘:oiltpassageseins saidfamountin'g- means hagvingg, their ‘1i outlet;V ends: in „ radial;A array?? about 15 t saint tool to; directzstxteams.; off? 011;, against :said ` took' during athefrccuttinge ’operation?.` thereofaîï urgingfisaid bushing itowatdsithegenlatged; portion oftitheatool, „and -acsupporteintvvçliicln-saidiguide« bushingiissmountedsfor l'gendwise». movementîß. 751m.. combination, c at. reeiprocablee rotatable 3 tool;-Lmeainssmountingf;saidstooliifonireciprocatïon' 1 and including a work clampingtcollar,sanft-ame v20 1 portion :in f which f said acolla'nfistf gui‘declîfoijf;r axial Á movement,v l, saidsfi‘ame portion «_,havìiflggî ' ail fluid supply; passagaf- an,annulalu'zA chamberaiinvsaidcoI-.i ` 1an, in :communicatiomwith: the: kiiuid-î suppllyìfpasz ani-2|;A a cutting; portionv intermediate; sani.lfslianlcv portions, , means ioperablyï» com'iecte'dff~ toi one); of saidfàshank- portionstfon‘reciprocating, tl:i'e„v töo'l, guider. meansacontinuouslyî- engaginga oma` of '1` said ’ .shanlb portionsf and; \. providing K-ï for'Y relative. axial and rotational movements of the shankic-portion sages of: the frame Lportion :-; throughout. aziz. range i of vrnelativefmovementY ofthe collar 'andy a:.».series ` of oil passages in said amounting@meansfextendr5 thereinf and; .guide-,means_it‘for. continuou'slírf giiid‘á ing from said chamber and‘vhavìngeitheirîoutlet endsçinwardlyfdirected and in> radial arrangement ments sof: the; said»4 other.A slfíanlíll 'po?tión‘ Atlíerei? ingi: theeother> of-"said’läs’hankï portio'nslf. andî‘pi'œ vidingg fon relative.v axial andLrotatiónalÍmové-î l aboutäsaidtgtoolfftœ' Idirect; streams âofsì pill-:against 1 30 and .» cooperating~,» Wittig.;thev ñrst‘. manned"f guide saidtoerig.duringïtheicuttingmptrattiomVJ " » Y meansqto determine theîaxisßofltlié tool'lî'ï¿ n ' ' 12. In a metal> cutting mac-hingen’ aid'all'í Bfllm a@ maehinezëofiithei classndescribemnszre; cipyocabliettook;meanssmounting:‘saictstootí' for. reciptocable;> and; rotatablef mill'í?gï; i'lò'ol"v having ‘ .recipifocation .vmcludingt atworká .clamping ‘colla-ra and :a: ' ser-lest. of?> oil:> passages; im said: mounting 35. shankfportions extendin’glf?om saidïcuttîrí'gl'ipor; saidîcollarvandtdirected towards .saiditoolfg said:` outlet ends including radial.:recessesfinstheiworkengagihgì f‘aceäofff` said-'g collanr extending .to 'the gagingf.. lsaid tool> th?oughout and.axialÈsti‘okev andv cooperatingr with.. bothl „saidf shank/portions." to mount vtheltoogl axisßin aîpredéterminedlocation; as. cutting portionv », and ». Having ,L upper'f‘and »lower meansthavinggtheitsoutlètïendstradially disposed»`r 40, tion,.„ spacedv apart ali‘g‘nedoguíde' means v"-bbtlf "en= and @means supporting. `onelof4 said""g11îde"means fonrelative«endwiseïmovementf' ing; a1- shank-f. and amenlarged;icutting„pml'tmnfy ppovidingl'. at: vvshoulder-5ilcxelievvf». saint:A took " " ' "