Патент USA US2404369код для вставки
July 23, 1946. y `2,404,369 H. c. FOSTER INDEXING 'MECHANISM ' ' s sheets-sheet' 1 Filed July 14, 1944 . Vo ' - INVEN‘TOR HarfJÜar/f F05 fer' _ “Y Mmm _m . July 23, 1946.- H. c. FOSTER 2,404,369 _ ` 4 INnExI'NG MEcHANIsM 3 Sheets-Sheet 2 „Filed July 14, 1944 ' INVENToR. Harry Clark. Foster y BY ` ATTUKN Y y H. c. FOSTER 'INDEXING MEQHANISM ` 2,404,369 3 Sheets-Sheet 5 l Filed „my~ 14, 1944 ArroRN Y l Patented July 23, 1946 » ` 2,404,369 UNITED STATES n PATENT OFFICE 2,404,369 ` INDEXING MECHANISM Harry Clark Foster, Alton, Ill., assîgnor to 0lin Industries, Inc., a corporation of Delaware Application July 14, 1944, Serial No. 544,983 10 Claims. (Cl. 10G-70) 2 1 This invention relates to indexing mechanisms in general and more particularly to an improved work positioning mechanism. An object of this invention is to' provide iin--V proved means for moving objects to predeter mined positions with a high degree of precision. Another object of this invention is to provide relatively simple, sturdy and inexpensive work member .5, resilient member or spring 6, and abut ment or stop 3. The position of the thrust block 4 in the channels 1 may be adjusted .by means of adjustmentscrew 9. The spring pilot I0 for guiding the spring 6 may be attached to the abutment or stop 3 and the position of the stop 3 in the channel may likewise be adjusted by means of adjustment screw I I. \ Y In Figure 2, the cam I is shown ready. for in positioning means in such mechanisms as punch presses, drill presses, draw presses, ammunition 10 sertion between adjacent rollers. In Figure 3 the cam has been inserted between the adjacent loading machines, and the like. rollers, thus forcing the thrust block 4 and chan Other objects and advantages will become ap parent from the descriptions and accompanying drawings, in which, Figure 1 is a plan view and Figures 2, 3 and 4 nel 1 forward, to the left, the diameter of one roller. Upon insertion of the cam between the are side views partly in section, illustrating a cam and series of rollers in accordance with one em moved forward the diameter of one roller and bodiment of this invention, rollers, the thrust block I4 is, as stated above, the space in the channel previously occupied by the resilient member 6 is taken up by the cam I, so that the abutting member 5 is tightly in Figure 5 is a side elevational view of a press illustrating one embodiment of this-invention, 20 contact with `the stop 3 and neither the cam nor the series ofjrollers is free to move either Figure 6 is a sectional view of a work carrying forward or backward, during' the time that the member and series of rollers taken at section 6-6 parallel vsurface or dwell 65 of the cam I is in of Figure 5 illustrating one embodiment of the „ contact with the adjacent roller. It is 'during invention, and Figure 7 is a detailed plan view of the press 25 this dwell while the work is locked in position, that the tools act upon the work. The work car partly in section taken at section 'I-‘I of Fig rying member, which is drivingly connected either ure 5. , to the cam or series of rollers may thus be held In accordance with this invention the above rigidly in position while a working operation is objects are accomplished by the provision of a novel work positioning mechanism having a se 30 occurring. -In Figure 4, the cam I has been re moved from between the rollers 2, and the resil ries of rollers with precise diameters and a cam ient member 6 with abutting member I5 has for insertion between adjacent rollers, which cam pushed the next roller up for action by cam sur effects a change in the relative positions of the face `lill, upon the next insertion of the cam I. series of rollers and the cam. The series of roll It lwill thus be apparent that upon repeated 1n ers and cam are so mounted that a work carry 35 sertions of the cam, the thrust block 4 will be ing member is moved forward an accurately de- \ moved forward stepwise the diameter of one or termined distance simultaneously with the more rollers, depending upon the width, and sur- ' change effected in the relative positions of the cam and series of rollers. The cam and rollers sition face 64, lover of the the abutting cam I, until member the cam 5, whereupon is in a it may be so mounted that the work carrying mem is necessary to again start the indexing with the ber is automatically rigidly held or locked in po cam above the ñrst roller adjacent the stop 4. sition during a working operation and likewise so It should likewise be understood that the series that no working operation can occur until the of' rollers 2 may .be as long as is necessary or de work and the work carrying member are in the proper operating position, which is of great ad 45 sired for the particular purpose employed, the number of work positions depending upon the vantage in precision work. number of rollers and number of rollers indexed Referring to the drawings, in Figures l, 2 and 3, a cam I with cam surface 64 and dwell 65 isA with each cam insertion. movably mounted for insertion between adjacent In Figures 5, 6, and 7 is shown a press, for instance for loading ammunition or the like, illus tating one embodiment of applicant’s invention. A work carrying member or slide I2 is supported rollers in the series of rollers 2. The series of rollers are positioned for lateral movement only by means such as the channels illustrated at l. One end of the series of rollers is positively held by slide support I3A and‘has rigidly connected to against the stop or thrust block 4, the other end it on each side channels 1, which channels ‘I in of the series of rollers being held by thel abutting turn carry series of rollers 2. The work may be . YIi 4 . positioned and held on work carrying member Yor slide I2 by any suitable means. For instance,` in loading primers, the workcarrying member I2 may hold a removable plate which is drilled to provide cavities for holding the primer cases'in 5 rows separated a distance exactly equal to the diameter of the rollers l2. The slide support I3 ' is mounted on press frame I4. Y The ram I5Y which _carries theworking tools, as moved to the left, engages latch control member 4! turning it to the left, so that downward move ment of latch bar 33 will be prevented by surface 42 and the press will be kept out of operation by action of clutch cam 28 on clutch key 29. In the operation oi the press, in running posi tion, as illustrated in Figure 5,-latch bar 33 rests in recess 43 and latch 35 is held in notch 31 by spring et. As the ram I5 is moved up and down, well as the cams I', is driven by means of Va drive 10 cams I are likewise moved up and down and, shaft It _through the action of a connecting rod i9, and crank pin I'I.V Successive rows of the primers are'thus moved directly under the tools upon each insertion of the cams I between ad upon each insertionbetween successive rolls 2, drive or move the work Ycarrying member for ward one roll diameter upon each insertion. Y l While the cam I is inserted with its parallel `faces jacent rollers »2, The drive shaft I'G' is inturn 15 between the rolls 2, the work carrying member driven by an electric motor, or‘other suitable i2 is held rigidly in position and the tools carried by ram I_Fi operate-on the work carried by member I2. When the work carrying member and chan» rod I9 is drivingly connectedV to the »ram Itl nels have moved forward to the point where through the toggle links 2.9 and 2|, toggle link 20 20 channel end plate 49 engages release rod 36,'the turning. aboutv pivot v22 andtoggle link 2| turning; latch 35 is pushed yout of notch 3l, thus unlatch about pivotY 24 .on the, ram I5; AThetoggle links; ing bar 33 which is pulled' up; by spring 39. so, that clutch cam «28 engages. clutch key 29 to stop the 291 and 2l . are movingly connected-at knuckle pin 25.' The ,position of pivot 22 maybe adjusted by.. press. Simultaneously, spring 46 effects a clock means 'of the adjusting member23; Y, Connecting ., 25 wise-movement of' control member 4 I‘, so that stop rod it. is.A connected to toggle “link‘29f by. means of Vlug 4.13 rests against latch bar?33. with surface 42 ' wristpin'ZS. " f, v‘ j , ‘ , below bar l331 toprevent the press fromfrestarting, Y VStarting lever 2l, having clutch `cam 23,.i's mov or from being started by manual. depression of ably attached tov frame VIII by means of starting the lever 2:1. Y ' lever .pivot 312. The starting lever 2~1'is resiliently 30 Work carrying member. I2 may then fbe pulled' held at one endïby clutchflever springy 30, which backwards manually or otherwise, for 'instance isattached atY the other end to spring bracket 3iy by means of channel' end plates 49', to- the> limit on frame` Iii'. Clutch cam- Y28î istdesiglned to .engage permitted by slide positioning bar 468.. During with >clutch key 29 to throw the ‘press ont oi` op 4this operation, set screw 5I effects4 accu-riter eration. " Latchbar- 33-is‘con-nectedr atY its upper 35 clockwisc movement ofcontrol member 4I so that endîto starting .lever 2lb-y means` of1V pin 34». , recess 43 is on the opposite» side of'y bar 33' andl Latch 35, which. isfvoperatedí by- -release’rod 36, Iis surface ¿l2 is underA bar 33 'to/prevent the press power,V through the action of clutch p__late I-Bwith clutch key 29. The other end of the connecting designed. toi/fit innotchiÍS-'I _in the. latch> bar 33E, from being started. In this ,-position, the unload whileÍ the press is in`V operation.A The .latch 35» ing _and loading of'wor-k» on the carrying member turns about' latch pivot -39 on latch bracket 38' 40! I2 can `be readily accomplished. ' Y 'Y ' (Figure l'71). - Latch-bracket likewise servesv as a Atte-r the new Íwork hasbeen positioned von Y guide'- fo-r `latch bar33. Latchlsipring'- l49, con» member I2», it isïthen .placed in starting position nected at one end to latch -35 and at the other- to É by pushing forward, tothe limit permitted by' pin mileage, rod guide» 5t,v tends ' to» manitain _latch __ _ 55, the slide position bar 48, which‘iin acts'V resiliently in contactwith- ‘latch- bar I33". ' » » »- 4‘5~ on the Vend plates 49 of- thev channelsA to- move V‘Latch control member» 4I» havingsurface -421 member I2’ and set screw 5I forward, thus‘p'er- -. w-hic‘riV serves as a stop for bar" 33- and hav-ing a - mitting spring 46 to rotate control member 4i recesses and stoplug dill-,is movably mounted on clockwiseunti-l recess -43 is; under bar 33. ' - frame I4 ¿at pivot 45; Spring 46 connected at one - The press can then be starte-d' bydepressing thev end to latchl control member 4I« :and: a-t ther-other 5'0"' starting lever' 2-7'. Whenl the starting- levefV is» de end 'to "spring bracket 4'I- on frame 'I4,~¿ tends'toA pressed, bar 33 is recess £3 and is retained plull- the latch control'member 4I clockwise, that ~ therein by thelocking action of latch 35» on notch is’to the right. In operating> position latch Ica-r 3l during the Vindexing movements of cams »I-, 33 restsïin recess 4-3. When latch control-member until _the latch 35 is pushed out of notch 3l by di is -so- turned that its surface 42: prev'ents down- 55î the »action of' end plate 49 on release rodL 35, which ward movement oflatch bar 33, thepress will be - again, as described above, stops thefpress. locked out of operation because` clutch cam- 28 Ordinarily 'the workV carrying _member I2“ willy be- held in» its successivefpositions- byVV itsï own' cannot be withdrawn Vfrom engagement with1 ` ' Y clutch-.key 29.-' The slide positioning bar`48» is weight and friction between itV and theslid’esup- moi/ably attached to slide support I3- with guide .3.0 _po-rt' I3. Any other suitable means Vmayy be em rods «53A in s_lide supporty I3," supporting the- slide ' ployed howeverY for holdingy the work fcarrying positioning barV 48H. The slottedV member- 54» car- Y member I2'l in »its successive; positions asI the cam-> rieti-'by slide positioning bar "i8> engages stop pin > I is withdrawn from successive insertions> be- ' , 55 on- slide- support I»3 tov limit the movement of tween the rollers' For instance, a» onef way: slide positioning bar 48. Slide positioning bar 65 brake trl'l operatingv on brake track 63- on- the âß-seryes- asa stop for work carrying member or channel may be employed'. illustrated,V the slide I2 Vby contacting the> end plates 49 of' the channels. Likewise, the slide' positioning bar `-43, when engaging the endïplates, 49er’V the channels, brake 5'!> pivots eccentrical‘ly about' pin 5% vand has a _spring 59 attached» at one »end to spring' post 5_6. The other enid of spring- 59~ is attached maybe pushed forward to place Athe work carry- y70 at spring-'post 6I on Vframe I4.“ The brake- is; pro ing member I-2- and channels l- Vin starting posi- vided withA ‘brake release lever16'2‘. tion,AV that is, so that the first roll adjacent-¿the thrustb-lock- 4 is inV properf position under cam' I; the action- of* thebrake, the- chan-nelv lïand work` carrying memberV I2 are free to move forward but Operating arm _5;8; a part orprattachedjto -cl'ran-l _ cannot' i move> backwards withoutY the operation A nel end plate t2u and carrying setscrew 5I when 75 of brake release lever" 62". 2,404,369' . In ythe above spe'ciiic example the application` of the present invention to a press for loading ammunition or the like is described in detail, but it should be understood that the invention is like wise applicable to other devices and mechanisms in which 'it is necessary to accurately position ob jects. Likewise, although in the description the cam and roller assemblyare effective for a dis tance of only one roller diameter on each inser tion ofthe cam, the positioning distances may be made two or more roller diameters merely by ap propriately changing the width of the cam I and 6i rollers, a stop at one end of said series of rollers, a stop separated from the other end of said series of rollers by a resilient member, said stops being rigidly connected to a work carrying member, a frame supporting said work carrying member, „ and a translation cam adapted for insertion be- '_ tween adjacent rollers operative to drive the said stops and work carrying member forward at least one roll diameter upon each insertion of said cam. » 4. A worlr> positioning mechanism comprising. in combination a series of laterally contiguous rollers, a forward stop for said rollers rigidly con the take-up in the resilient member indicated at nected to a work carrying member, a rear stop 5 and 6 in the drawings. The work positioning distances may also be varied by changing the. di 16 rigidly connected to said work carrying member and separated from the other end of said series ameter of the rollers, the larger diameter rollers of rollers by a resilient member, means support providing larger distances between work positions ing said Work carrying member, and a cam mov and smaller diameter rollers providing smaller ably carried by said support means for insertion distances between the work positions. Likewise, the cam I, instead of being connected to the ram 20 between adjacent rollers and operative upon each insertion between said rollers to drive said stops I5, may be drivingly connected to the work car and work carrying member forward oneroller rying member I2, and the series of rollers 2 may diameter. . y then be carried by the ram I5, so that the cam I 5. A work positioning mechanism comprising will move along with the work carrying member I2. It is thus obvious that applicant’s invention 25 in combination a series of laterally contiguous. rollers, a stop at one end of ‘said series of rollers, has a wide field of utility and that many changes a stop and an abutting member separated from in the assembly and a wide variation in the con each other by a resilient member at the otherV struction thereof can be made without departing end of said series of rollers, said stop being rigid-g from the spirit and scope of applicant’s inven- 1 ly connected to a work carrying member, a frame tion. supporting said work carrying member, and a This invention accordingly provides simple, ei translating cam adapted for insertion between ñcient, and inexpensive means for indexing and adjacent rollers and operative to drive the' said positioning objects with a high degree of preci stops and Work carrying member forward at least sion. It is to be understood that the embodi-. one roller diameter upon each insertion of said ments of the present invention as shown and de cam, said abutting member and adjacent stop be scribed are only illustrative, and that the scope , ing separated from each other by full extension of the invention is not to be limited thereby ex of said resilient means a distance equal to the cept insofar as is deñned in the following claims. width of said cam, so. that said stops and workHaving thus described’the invention, what is carrying member are held stationary while said claimed and desired to secure by Letters Pat cam remains inserted between saidrollers. ent is: 6. A work positioning mechanism comprising 1. A work positioning mechanism comprising in combination a series of laterally contiguous a roller element and a cam element, said roller rollers, a forward stop for said rollers rigidly con element having a series of laterally contiguous rollers held in a channel at one end of the series 45 nected to the work carrying member, an abutting member at the other end of said series of rollers, by a stop and at the other end of the series by a means supporting said work carrying member, resilient member, said cam element being adapted a cam movably carried by said support means for for insertion between adjacent rollers to change insertion between adjacent rollers, a rear stop rig the relative positions of said elements upon each insertion of said cam element, one of said ele 50 idly connected to said work carrying member and _separated from said abutting member a distance ments being drivingly connected to a work car equal to the width of said cam by a resilient mem rying member, and the other of said elements be~ ber, said cam being operative upon each inser ing connected to a tool supporting member. tion between said rollers to drive said stop and 2. «A work positioning mechanism comprising a cam element and a roller element, said roller 55 work carrying member forward at least one roll element being a series of laterally contiguous roll diameter and While inserted between said rollers ers held in a channel at one end of the series by to hold said stop and work carrying member sta a stop and at the other end of the series by a tionary. ' , resilient member interposed between the rollers '7. In a press having a tool carrying member and a stop, said cam element being adapted for 60 and a work carrying member the combination insertion between adjacent rollers to change the comprising a roller element having a series of lat relative positions of said elements upon each ir. erally contiguous rollers held in a channel at sertion of said cam, one of said elements being one end of the series by a stop and at the other drivingly connected to a work carrying member, means for supporting and guiding said work car 65 end of the series by a resilient member, a cam element adapted for insertion between adjacent rying member, the other of said elements being rollers to change the relative positions of said ele connected to a tool supporting member, said re silient member permitting lateral movement of said rollers between said stops only to the extent ments upon each insertion of said cam element, y one of said elements being drivingly connected to occasioned by the insertion of said cam, so that 70 said work carrying member, the other of said elements being connected to said tool supporting said elements are interlocked during each com member, means preventing starting of said press plete insertion of the cam while the tools are in while said work carrying member is out of start ing position, and means for automatically stop 3. A work positioning mechanism comprising in combination a series of laterally contiguous 75 ping the operation of said press when said work working position. 7 8T Vcarrying vmember has'traveled the distance pro when said work carrying member has traveled the ‘vided -forby said cam and roller members.. .8; In Va press having a tool carrying member complete working distance through said press. Y 9.`A work‘ positioning mechanism comprising Vand a work Vcarrying member the combination roller means and cam means, one'of said means comprising channels each carrying a series of lat- Y - being drivingly connected to a work carrying eral-ly contiguous rollers. and rigidly attached on each side of said work carrying member, labut nected to> a tool supporting member, said camV ting members in said channels -at one end of said` ' meansgbeing adapted for insertion between suc- ' member and the other of saidvmeans being con- Y series of rollers separated Vfrom the end of said cessive rollers'in said roller means to drive said Y `channel by resilient'members, cams carried by 161" work carrying member forward to successive pre said work carrying member adapted for inser determined positions', and means forholding said work carrying member stationary While saidV cam means is Withdrawn fromfbetween successive roll tion between adjacent rollers in each `of said channels, said'V cam being adapted to drive said channels and Work carrying member forward at ers in said roller means. v least one roller diameter upon each insertion, lor said abutting members being separatedrfrom the Yends of said? channels by said resilient members a distance equal to the width of said cam, so that said work carrying-member is,> held stationary While said cams remain inserted between said roll ers», means for operating said tool carrying mem ber and said cams, means for preventing opera 10. A work positioning mechanism comprising a series of rollers and a'cam adapted for inser tion between adjacent'roller's in said series of rollers, said series of rollers being carried in a channel', said Ychannel'being attached to a workï ¿carrying member, said cam being adapted upon each insertion between said rollers tov drive said work- carrying member forward at least one roller ' tion of said tool carrying member and cams when diameter, means for holdingv said work carrying ‘ said work carrying member and channels are out member stationary while said cam is between said ' of operating position, means» for holding said 25 '.rollers, and means for holding said work carry channels and work carrying members stationary ing member stationary while said cam is being while said cams are being. withdrawn from be withdrawn from between said rollers. ' tween said rollers, `and means for stopping op' eration of said tool carrying member and» cams '