US2425170A - Continuous head turning machine - Google Patents

Description

1947- I K. F. WUNSCH ET AL 2,425,170

CONTINUOUS HEAD TURNING MACHINE I Filed June 4, 1942 13 Sheets-Sheet 1 N W lgVENTORS BY ATTORN EYS Aug. 5,1947. K. F. WUNSCH ET'AL CONTINUOUS HEAD TURNING MACHINE Filed June 4, 1942 lSSheets-Sheet 2 I/ATTORINEYS Aug. 5, 1947- K. F. wuNscH ET AL 2,425,170

CONTINUOUS HEAD TURNING MACHINE Filed June 4, 1942 13 Sheets-Sheet 5 ATTORNEYS Aug. 5, 1947. K. F. wuNscH ET AL 2 CONTINUOUS HEAD TURNING MACHINE Filed June 4, 1942 l5 Sheets-Sheet 4 IHIIIIHHHIIHIII H II lllljlllllll IHHIHIIII Sm W 20/ I "-1.1 I m /2 II II llllllll Q ATTORNEYS Aug. 5, 1947.

K. F. WUNSCH ET AL CONTINUOUS HEAD TURNING MACHINE l5 Sheebs-Sheet 5,

Filed June 4. 1942 lNVEllgfORS j E .r

ATTORNEYS 'K. F. wuNscH ET AL CONTINUOUS HEAD TURNING MACHINE Aug. 5, 1947.

Filed June 4, 1942 155 Sheets-Sheet 6 NNN ' ENVENTORS 12,4 5

ATTORNEYS Aug. 5, 1947.

K. F. WUNSCH ET AL CONTINUOUS HEAD TURNING MACHINE Filed June.4, 1942 13 Sheets-Sheet 7 ATTORNEYS Aug. 5, 1947.

K. F. WUNSCH ET AL CONTINUOUS HEAD TURNING MACHINE Filed June 4, 1942 13 Sheets-Sheet 8 INVENTORS M gw ATTORNEYS Aug. 5, 1947. K. F.. WUNSCH ET AL CONTINUOUS HEAD TURNING MACHINE Filed June 4, 1942 15 Sheets-Sheet 9 ATTORNEYS Aug. 5, 1947. K. F. WUNSCH ET AL 2,425,170

CONTINUOUS HEAD TURNING MACHINE Filed June 4, 1942 15 Sheets- Sheet 1o k NVENTORS BY ATTORNEZJS v 1., M 3% Q \Mfiw mmh @Q mmw w m k 6 Aug. 5, 1947. K. F. WUNSCH ET AL CONTINUOUS HEAD TURNING MACHINE Filed June 4,1942 13 Sheets-Sheet 11 VENTORS ATTORNEYS Aug. 5, 1947. K. F. WUNSCH El AL -CONTINUOUS HEAD TURNING MACHINE Filed June 4, 1942 13 Sheets-Sheet l3 v 9% Dub Nbh x h ATTORNEYS Patented Aug. 5, 1947 ZAZSJYd CONTINUOUS HEAD TURNING MACHINE Karl F. Wunsch, Bridgeport, and John E. Ferguson, Southbury, Conn., assignors to Bridgeport Brass Company, Bridgeport, Conn., a corporation of Connecticut Application June 4, 1942, Serial No. 445,722

32- Claims. 1

The present invention relates to a continuous head turning machine for work pieces adapted particularly for the manufacture of ordnance equipment or the like. More particularly, it relates to a continuous head turning machine for breaching and other finishing operations upon a cartridge casing or other work piece, for example, for the application to such casing of the usual ejector groove, also, for the final trimming on one end of the casing to reduce it to exact longitudinal dimensions and for the chamfering of said end.

One of the principal objects of the invention is to provide a machine of this character for the rapid quantitative production of cartridge casings or the like. This machine is adapted to finish as many as 3600 casings or more per hour.

Another object of the present invention is the provision in the machine of a turret carrier adapted to carry each shell casing Or other work piece in a continuous manner along an orbital path successively through a series of tooling operations. In such operations broadly, the following sequence of operations occur: At a first station I the casings or pieces are delivered to a transfer mechanism one by one. Between the first station I and a second station II, the cartridge casings are by injector mechanism injected one by one into orbitally moving work holders in the turret structure from the transfer mechanism. Between station II and a third station 111, each injected casing or work piece and its work holder or chuck, which at the moment is free for longitudinal movement, is properly located in the longitudinal direction for the purpose of putting the various portions of each Work piece or cartridge casing in a proper position for the subsequent tooling operations thereon. On leaving the third station III, each work holder is locked in located position against longitudinal displacement. After being so locked on leaving the third station each work holder or chuck is coupled to a driving means for rotating it on its own axis at high speed (approximately 3600 R. P. M.). The turret member or carrier then carries or moves each rotating chuck in the orbital path successively to a fourth station IV-where, simultaneously a rotary end saw or severing means cuts off excess of the length of the rear end of each work piece or shell casing passing that station to give the particular piece or casing approximately its correct length. At the same time at this fourth station, the front end of each piece or casing arriving there is brought into contact with the starting end of a stationary arcuate groove cutting or breaching tool which serves to cut the annular ejector groove into the external surface of each succeeding casing. The arcuate tool extends substantially through 180 of the orbital path travel of the work holders 0n turret member and is stationary. Each of the individual casings, rapidly rotated in its driven rotary chuck or work holder, is moved in the orbital path past the stationary arcuate tool to a fifth station V located shortly ahead of the end of the arcuate tool at a sixth station VI.

At the fifth station V, a finishing end cut is applied by an appropriate tool to the rear end of each casing or work piece. This trims each casing to its required length. Each trimmed casing, still being acted upon by the arcuate broaching or cutting tool is then carried to the sixth station VI of the orbital path at the terminal end of the said arcuate tool where suitable tools are provided that begin operation on the rear end of each trimmed work piece or casing to provide an internal and external chamfer. These chamfering tools operate on said trimmed piece or casing in its travel from the sixth station to a seventh station VII. Also, in its traverse from the sixth station VI to station VII, a finishing groove cut is effected on each trimmed piece or casing by a suitable tool acting in each groove previously cut by the arcuate breaching tool. Each finished piece or casing then is carried to an eighth station VIII, wherein ejection of each piece orcasing from its holder or chuck is started. The ejection is completed in the traverse from the eighth station VIII to a ninth station IX Where the ejection operation is completed.

It is another object of the invention to provide novel means efiecting the required operations on each casing or work piece in turn at each of the aforementioned stations as each moves in the orbital path described by its Work holder.

Still another object is to provide novel groove cutting or broaching means for cutting the required ejector groove in each of the casings or work pieces during orbital movement of such casings.

A further object is to provide novel means for delivering the casings or Work pieces to said machine and for transfering and injecting them one by oneto receiving work holders while the latter are in orbital motion.

Still a further object is to provide novel means in said machine for locating the injected casings or work pieces properly with their work holders while orbital movement of said work holders is maintained.

Yet another object is to provide novel means in said machine for finishing the required groove cut into each casing or work piece while orbital motion of such casings or work pieces continues.

A further object is to provide means in said machine for ejecting finished casing-s or work pieces from their holders while orbital motion of the latter continues.

An additional object is to provide testing means arranged at various of the stations, and safety controls in conjunction with operating parts of the machine to prevent its operation either in the event of improper location of a work piece or casing, or in the event of a failure of ejection of a finished casing or work piece from the machine.

To the accomplishment of the foregoing and such other objects as may hereinafter appear, this invention consists in the novel construction and arrangement of parts hereinafter described and then sought to be defined in the appended claims, reference being had to the accompanying drawings forming a part hereof, which show merely for the purposes of illustrative disclosure a preferred embodiment of the invention, it being expressly understood, however, that various changes may be made in practice within the scope of the appended claims, without digressing from the inventive idea.

In the accompanying drawings in which similar reference characters denote corresponding parts and in which the sectional views are viewed in the directions of the indicating arrows:

Fig. 1 is a vertical side sectional elevation of the general assembly of the machine taken along line I--l of Fig. 2.

Fig. 1a illustrates a shell casing finished by the tooling operations of the machine of this invention;

Fig. 2 is a vertical front section taken along line 22 of Fig.1;

Fig. 3 is a vertical section taken along line 3-3 of Fig. 1 and illustrating, also, details of mechanisms at the rear side of the turret structure;

Fig. 3a is a fragmentary view illustrating details of the chuck brake.

Fig. 4 is an enlarged fragmentary section illustrating details of the feed mechanisms;

Fig. 5 is a view taken along line 5-5 of Fig. 4, illustrating further details of construction;

Fig. 6 is an enlarged section taken along lines 6-6 of Fig. 4, illustrating details of the locating mechanisms and spindle chucks;

Fig. '7 is a section taken along lines 1-1 of Fig. 4 illustrating details of a mechanism for locking the chuck or work holder after a shell casing has been located therewith;

Fig. 8 is a fragmentary end view of Fig. 7, viewed from the right of Fig. '7;

Fig. 9 is an enlarged detail view of the rear and front locating mechanisms of the machine;

Fig. 10 is a section taken along line IG-lll of Fig. 9 illustrating further details of the front locator mechanism;

Fig. 11 is a sectional view taken along line l!--ll of Fig. 9. illustrating details of the automatic cut-01f switching mechanisms provided for stopping the machine in the event of improper location of a shell casing in a work holder;

Fig. 12 (on sheet 3) is a fragmentary plan view of the rear locator mechanism shown in Fig. 9;

Fig. 13 is a sectional view taken along line |3I3 of Fig. 6 illustrating the location of the groove cutting or broaching tool and its application to a shell casing during the movement of the latter from station III to IV, and, also, illustrating partially the mechanism at station VI for applying the finishing cut to the groove formed by the cutting or broaching tool;

Fig. 14 is a fragmentary section taken along line I l-44 of Fig. 13 illustrating the action of the groove cutting or broaching tool with respect to the surface of a casing and, also, illustrating the means for adjusting the depth of cut of the tool;

Fig. 15 is a sectional view taken along line l5| 5 of Fig. 13 illustrating details of the mechanism for applying the finishing out to the groove cut in a casing by the cutting or broaching tool;

Fig. 16 is a side view of the mechanism shown in Fig. 15 viewed from the left thereof;

Fig. 17 is a fragmentary View of the valve and its control mechanism associated with the ejector mechanism for providing auxiliary fluid blast ejection in conjunction. with the mechanical ejector mechanism operating from station VIII to station IX.

Fig. 18 illustrates details of the ejector mechanism operating from station VIII to station IX;

Fig. 19 is a view taken along line l9|9 of Fig. 18 illustrating the relative position and manner of application of both the end finish cutting tool located at station V and of the outside and inside chamfering too-ls which begin operation at station VI;

Fig. 20 is an enlarged detail view of the manually operated starting or coupling mechanism for the machine;

Fig. 21 is a view taken along line Zl-Zl of Fig. 20 illustrating further details of the said coupling mechanism;

Fig. 22 is a simplified wiring diagram of the electrical circuits for controlling the electric motors driving various parts of the machine, and of the safety controls in circuits in the running condition of the machine;

Fig. 23 illustrates a portion of the circuits and manually operated coupling mechanism in the stopped, locked position of the machine;

Fig. 24 illustrates the same features as in Fig. 23 in the neutral position of the machine;

Fig. 25 is a schematic diagram indicating the various stations of operation and the tooling operations effected at each station;

Fig. 26 is a view similar to Fig. 13 on an enlarged scale illustrating a modified form of groove cutting or broaching tool, which may be substituted in the machine for that of Fig. 13;

Fig. 27 is a sectional view taken along line 212'! of Fig. 2.6 illustrating details of construction of the said modified form of groove cutting or broaching tool; and

Fig. 28 is a sectional view taken along line 2828 of Fig. 27 illustrating further details of construction of said modified form of groove cutting or broaching tool.

Referring generally to the drawing, and. particularly to Fig. 1a., 5 denotes a shell or cartridge casing. This casing adjacent its front or closed end B is provided with an annular surface groove 7 which cooperates in well known manner with the usual ejecting mechanism of a cannon or gun for the removal of the casings after discharge. The wall 8 of this casing has a slight taper from its front end 6 towards its rear end 9. The longitudinal dimension of the casing 5 must be very accurately determined. The rear end 9 is chamfered both internally and externally.

The machine constituting the subject matter of this invention is adapted to trim the casing 5 set; 1%

to exact length by operation oaths-resi ns; 9i

toprovide theannular'ejector groove 1, and

provide the chamf'ersori tlie'said rear'end' 9;

The turret member (Figs. 1-6) Referring further to the drawings; and first;.-t'o

Figs. 1 to 6, it denotes a frame or housing designed'to' carr the working partsof the machine.

housin'g'over it's top carries as'uitably'siip=" ported horizontally extending turret axis Iii which is designed to carry'therot'atingiturretfl. This tllliet T is supported as Will Iid'W' lbe de-" scribed. In" the embodiment shown (Fig; 6), an aisle bearin block I? is Carried andatta cl'ied sllitalbly bearirfg" block has a horizontally extending bore The opposite end of the axle H oh a' por't'ion ll'a'there'of carries the turret T. This turret cornprises" a large diametere plate-like member'zt; which on one face is provided With'a concentric recess 2 l to provide freec'learance for thebearing block l2. The axle member H is provided with an annular flange lib against which theopposite' face of the turret platemernber abuts.

l'i'b'as by bolts 22' or the like so that rotation of the axle l', as will be'pres'ently described, causes corresponding rotation of the turret plate'liieinher fill. The member 20 is suitably'spa ced fi'orn the inner end I241 of the bearing block 12 by" a suitable extension on the rotary race block l'4a' of the roller bearing i l. Suita-bles'ea'ling' ringers may be provided to prevent the access of dust and dirt to the roller'bearings M.

The work holders or chuck members (Figs; 6- 8" The turret member 29 is provided with a pmrality' of equi-spaced horizontally ekt'e'ri'dirig chuck bores 24. Each of these bores contains identical structural members and that" inohe bore only will be described. Each chuck bore 24' has a sleeve 25 fitted therein; This sleeve at one end has an annular flange 25 which abuts a'face of the turret plate member 281' and'lliniitsthe depth of its insertion into the bore- 24. Fit ting within the sleeve 25 is an annular ring-2'1; This ring is internally threaded at 28 and provided also with an internally extending annular rib 29. Stationary race blocks 30 and 3| of the respectiveroller bearings 32', 33 are carried on the ring 2,"! on opposite sides of the rib 29. A chuck sleeve or Work holder 3' 5 is'fitted' internally of the movable race blocks 35, 35 of the roller bearings 32, 339i The chuck sleeve 3 taper'siifiternally from thefront F toward the rear Ri'of the turret plate member 29 for purposes to" be presently described. At its front end; the chuck sleeve or work holder 3 has an annular" flange 31 which abuts an end of the race"- block 35; A suitable sealing ring 38 having a bored-out por tion- 38a tofit the annular flange" 31 threadediy" The said plate member is securedsuitably to the flange 6 eng'ag'es'the threaded portion 28 of the annular ring 21. This ring preventsaccess of dirt to the bearings 32 and-33 At its opposite endthe chuck sleeve 34 isexternally' threaded at 39-. S0 arranged, the chuck sleeve 34 can rotate freely within the ring 21 on the roller bearings (32', 33.

The rear end of the sleeve 25and the rear face or the turret member it? are cut away or suitably recessed to provide an annular groove 22. bearing support member 43' is provided. This support 33 has an annular flange a l shaped to I fit within the annular groove 52. It also has an opening 45 concentric with and of consider ably larger diameter than the chuck sleeve as which extends therethrough. The support 43 als'o'has a horizontally extending flange 36 provided on its external surface with a race-way El" for ball bearings 8. The support 43 is secured suitably to the sleeve 25 as by the bolts t9 (Fig. '7') and, v'vhen so'secured, serves to rigidly position the ring 25 against rotational or axial displacement in the turret plate member 26.

The chuck sleeve 34 is'rigidly secured between the race blocks 35; 35 of the roller bearings 32,

' 3 3 bya' suitable clamping nut 50 which is screwed over the threadedportion39 of the chuck sleeve into abutting relationship with the race block 36-.- Whensomount'ed'the race blocks 35 and 3S and the chuck" sleeve 34 are rotatable as a unit about-the non rotatable race blocks 36 and iii portion 39-" is provided with suitable longitudinallyekteiiding'grooves 5! which slidably receive splinesfi t ona pulley part 53 This pulley part is threaded externally at 5:3 and threadedly engages a threaded portion 55 provided in an internal'bored-out portion of a sheave or pulley 58. The latter is'rotatably carried on the ball bearingsifl by the race Way 57. A' suitable sealing ring 58 extending from a face of the pulley 56 into'abutinentvdth the support as prevents the accessof dirtto the ball bearings 63;

The pulley 56 is adapted to be driven in a manner to be presently described; being freely rotatable on the ball bearings 63 and serving when" driven torotatethe chuck sleeve-6%. While the pulley 55 is locked against longitudinal movement by its ball bearing support on the support Q-ithe sleeve 3%, being slidably keyed thereto through the spliries52 and key-waysfi i, may move longitudinally independently of the pulley 56 for the; purpose to be presently described.

Means-are provided for locking the work holder or chuck sleeve 34- in any predetermined position oflongitudinal displacement. To this end, as shown in- Figs. 4 and 7,.the annular ring 2'? is provided with a cut-out or recess 59. This recess has-'a 'fiat bottom face tea which extends as a chord of" the are defining the outer surface of the ring- 21 and is located below said surface. This recess'has considerable Width in the axial direction of the ring 2-1. A similarly extending slottll is provided in the sleeve 25; This slot or recess 6Q, however, is of smaller width than the slot 59; A bore 6! extending inwardly from the periphery of the plate'm'embe'r 2B and forming 6? receives s'lidabl-y a Wedging pin 62, which in a portion 62a thereof has a fiat surface adapted tjq ngsge and abut the bottom 59a of the slot 59. when so engaged it serves simultaneously to prevent rotation of the ring 21 and also to wedge it against longitudinal displacement.

The wedging member 62 is pivotally joined at 63 (Figs. 4 and 5) to one arm 54a of a lever 54 pivoted at E5 to the turret plate member 20 within a suitably provided recess 65 located in the circumferential face of said plate 20. The other arm 54b of this lever 6 which normally lies below the peripheral surface of the member 28 carries a suitable cam roller 61 whose diameter is so admeasured as to protrude from the peripheral surface of the member 25. The extreme end of arm 64b engages a plunger pin 58, extending into a bore 69 within the plate 25. This plunger is normally urged outwardly by a compression spring 10. Since the spring 1!! is sufficiently powerful to normally urge the arm 54b outwardly, because of the pivoting arrangement at 55 it tends to urge the Wedging surface 621; of the wedging pin 52 into locking engagement with the ring 21. The cam roller operates on a suitable cam to be presentiy described to operate the wedging pin 52 in a manner also to be presently described.

As indicated hereinbefore, each of the chuck bores 24 of the turret plate 20 is provided with a chuck sleeve and sheave or pulley drive construction identical with that just described. In an actual embodiment and as shown in these drawings, eight chuck sleeves or work holders of such construction are provided in the turret member 20, More or fewer such chuck sleeves may be provided.

The peripheral surface of the turret plate member 20 is provided with an annular set of teeth II which are adapted to be engaged by a suitable driving chain 12 which is driven as will be presently described. Any other suitable drive may be provided.

The turret member drive (Figs. 1-4 inc.)

In the embodiment shown, the drive mechanism for the turret plate member 20 comprises the following:

A main motor 15 (Fig. 1) (in this embodiment a 3 phase electric motor) is suitably supported at F6 on the base Iflb of the housing [0. The output shaft ll of this motor is provided with a suitable pulley wheel 18. The latter in turn is coupled by a suitable belt 79 to a pulley 80 on the input shaft Bl of a suitable variable speed transmission device 82. The latter, in the embodiment shown, is a well known variable speed transmission device known as Reeves variable speed transmission. It may be any other suitable type.

This transmission device 82 is suitably fixed at 83 on the base Illb, The output shaft 84 of this transmission device is provided with a chain sprocket wheel 85. This wheel 85 in turn is coupled by suitable endless chain 86 or any other type of transmission coupling with a chain sprocket wheel 81. The wheel 81 is suitably keyed to or integral with a sleeve 88 which in turn is rotatably carried on a main drive shaft 89. The latter is suitably carried in the housing H! by suitable hanging bearings 90 depending from the top lBa of the frame of the housing II). The main drive shaft 89 extends horizontally and carries thereon various driving cams for various of the operating parts of the machine, all, as will be presently described. The sleeve 88 is adapted to be mechanically coupled to the driving shaft 89 by a suitable clutch 9| also in a manner to be presently described.

On shaft 89 is another sprocket 92 which drives a sprocket 92a by means of a chain 921). Sprocket 8 92a is mounted on a shaft 920 parallel to shaft 89. This shaft 920 has thereon a sprocket 92d which through the medium of the chain 12 drives the turret 20. Of course gearing or any other type of drive may be substituted if desirable.

The chuck or work holder drive (Figs. 1-3 inc.)

A second driving motor 93 for rotating the chuck sheaves or pulleys 55 is provided. This motor is supported on a plate 94 (Figs. 1 and 3). The plate is pivoted along one transverse edge on a horizontal rod 95 whose opposite ends are suitably supported between an upright bracket 96 and hood-like member 91 arranged concentrically in spaced relationship about the turret plate 20. Both the bracket and member 91 are supported suitably from the top 10a of the frame or housing I0. The opposite edge of plate 94 is provided with suitable adjusting bolts 98 which cooperate with a transversely supported rod 98a to facilitate angular adjustment of the plate 94 for a purpose to be presently described.

Th driving shaft 99 of the motor 93 is equipped with two pulley wheels I60 and NH. An endless band or belt I02 is passed around pulley wheel I50 and various of the pulley Wheels 55 as shown in Fig. 3. The diameter of pulley wheel IE0 is smaller than the over-all diameter of the turret member 20 so that the belt I92 assumes a substantially triangular shape shown in Fig. 3. With such shape, the pulley wheels 56 do not always engage the belt I92. The angular range of disengagement is approximately 90 extending about 45 on each side of the uppermost orbital position. This angle, however, may vary to suit any particular required condition. In this manner, rotation of the turret member 29 will cause successive of the pulley wheels 56 to ride into engagement with the belt H12 in their orbital travel in the direction of rotation of the plate member 20 and, also, cause the chuck driving sheaves or pulley wheels 56 at another point in the rotation of the member 20 to ride off the belt H32 so that alternately the pulleys 56 are uncoupled, driven and again uncoupled from the drive belt I02 in each complete revolution of the turret member 20, It is important to provide for such an arrangement because it is necessary during certain periods of operations on each shell casing 5 to have its particular chuck or work holder stationary while at other points it must be rotated. In the embodiment shown, the arrangement of the belt I02 is such that the chuck pulleys 56 are not coupled to it from the first to the third stations I to III of the orbital path, become coupled thereto between the third and fourth stations III and IV, and remain coupled to the belt until just before they reach the station VIII, and then become uncoupled again in their traverse from station VIII back to station I.

The plate 94 is made adjustable to loosen or tighten the engagement of the :belt I02 around pulley I and the sheaves 56.

The loading station I (Figs. 1 to 5 inc.)

The shell casings 5 which are operated upon in the machine are delivered to it at a loading station I. This loading station I is located at the uppermost point in the orbital path described by the various work holders or chucks 34 in their rotation with the turret plate member 20. At this station I the various shell casings 5 are delivered one by one to transfer mechanism of the machine. From the transfer mechanism each casing 5 is injected into a particular chuck 34,

Q I I ll. I H .areplaced in the chute ll ll manually at its uppermost end (not shown), They may,.however, be delivered mechanically if desired. Itis essensocket i255 will carry its contained'shell casing .rock shaft l2! as just described by a crank- 12 8 e whilesuch particular chuck moves from station I toward station II along the orbital path.

The delivery mechanism comprises a gravity "feed chute llll. This chute in the embodiment shown has a sloping channeled slide ill open at the topand whose guiding vertical side wallsllz are curved on large radii of curvature so thatas the work pieces or casings -5 roll down the slide ill, their natural tendency to follow a curved path becauseof their slight taper is permitted.

The walls H2 are parallel andspaced from. each other sufliciently to permit casings 5 to roll freely toward the bottom or delivery end of the chute In the embodiment shown, the casings 5 tial, however, that the casings all ext'end in the same direction, that is, with their rear ends 9 in proper direction for insertion into the chucks 34 of themachine.

At the delivery end of the chute H acover plate H3 (Figs. 4-5) which extends across the top ofthe walls I I2 of the chute is suitablysecured to them. An end H6 of this cover plate is curved downwardly substantially as shown, providing with the end I Ha of the bottom plate l l l, a discharge opening H from which the casings'i may drop one by one vertically on to transferring .mechanisrnnow to be described.

The transferring mechanism (Figs. 1, 2, 4,5)

turn is carried on suitable bearings I22 supported at l23ifrom the top lila of the housing l0. These bearings support the rock shaft l2l in axial alignment with the turret axle H. The arm 12.0 is provided with an upright extension 124. This provided with a substantially semi-circular, re.-

'cessed channel I25 shaped substantiallycomplemental to. the curvature of the surface of casing .5.

A-plate-like arm 21 extends fromone side of the channel lzfi. This arm is provided with a ,surface having a radius of curvature equalsub- .stantially toithat of the distance between the faxisi of the rock shaft I2! andthe pitchcircle v, of the chucks I26. i have oscillatory motion about the rockshaft l2l so that its socket member I26 oscillates-in an .orbit parallel to.the orbital path-of the casings or workpieces 5, 'At one extreme of its oscilla- The arm I20 is adapted to tions, the channel 125 ofithe socket |25.will be positioned directly below the outlet openingllB to receive a shell casing5. In its motion toward other extreme positions of its oscillations, the

5 from station I toward station II-for the injection into asynchronously moving chuck sleeve as then opposite said socket I25. At the same time the flange 12"! will be movedand willili e .below the outlet H5 to effectively prevent other 1,

casings 5 from falling out of the delivery chute Ill).

The armlzll is adapted to be oscillated on the (-Fig. 2) which maybe integral therewith. :The crank is pivotally coupled to a link [29. P The latter is pivotally coupled to one arm [3 0 of a 40 extension at its outermostend has a receiving socket 125 which in the embodiment shown is same lever is provided with a suitable cam follower l.3.4f whic'h engages in, a cam groove. I35 promesa ionacar'n member 135. This cam member 136 .is keyed or otherwise suitably fixed to the main drive shaftlfi il. .In this way,frotat ion of the j js'haftjfi istranslated into oscillatory'motion of lthei arm 1,2 0 .on thelrock shaft l2! in a plane gthatlisparallel totheplane of the frontF .ofthe turret member .29 for. the purpose just,. described. fl'jhe ,cam gro'ovehltgiis soshapedthat when arm 12 0 ismoved injthe same direction of rotation .as late memberjjl it has a speed synchronous t ewith. The cam groove effects opposite ,movement of,{ar'; n ,I 26 more rapidly, so that during. each period, of synchronous 'motionthel socket v l and ja worli. .holder 34' wil1Ibeaxial1y aligned before they arrive atstatiOn' II, Iandrernain so to station II forthe injection 'of the casing on the recessdifiuinto ,awork holder .34, as will be presently described. lideans are also provided in conjunction with tnans'ferring mechanism to 'insiirea: quick, positive delive'ry of a shell casing 5 into the chan- {nel l2i each time'tne' latter lies below the outlet H5 and atthe sarne time to positively block the --iee ding of successive casings 5 while the arm 1 20 is travelling fron'i iits receiving position to the injecting position. To -this endf'the cover plate I it carries a pair of bell crank levers Ilil. The latter are suitably pivoted'at i l I to the said cover member H3. lll pl'i jltst fi extendingifrorn the a e reaebe f li -se v m t am pression s pring' s l lfi, one, lying between each. of the said abutments and'th'e; corresponding upright arm Men of' the bellcrank levers Hit. These springs Hi3 serve normally totendto urgethe lever arms {@611 may from theLabutrnent-s M2, and-in Fig. 4 tendto 'givethen'i counter-clockwise 7 :"h e'pivots 14!. The o thefiarms itilb are eachp votedat its to one of a pair of levers 145. One arm l i5a, of each of the ilevers extends through suitably,providedslots'M6 injthe outermost end -l'l l of the cover plate l [3. Each of these arms i511. isf adapted when rotated li n shown dot-dash lines in: Eigfl l and to overlie th asesl i rec l v th QPQ iI 5 audi g sh 1 asing in ohe r ces .1 .6. i th r g za At thens ni tim hese arm 4 Leav 1105 His. wh h the hem ro o th swea rese ad ee tha in t ope ing i 5 a d 'l l it en lal th v eth asi b hin it iilaeki he shaw ""P eselev r li ar articu a ed dur n a b th Qseillawr i e 9 th a m. I291 F thi .1 ex o e th y eachhar anarm. li T ese arm b niyq a iqincda l4 1 a. link l i hic .v tedsu tabl a M t afi l i h i lia k e 1 1.5. sX-tendine ir an attached. i P I 1. i kwi th arml fl 3 WPlQJ Q Il arm 23 .4 th c ockwi di tien, c lEi sal ink li r ends .t m at ve a-rmsj lie int l same. d rection about 111. poin s .4 4 Th s rot ion rc sted he aus t arms as lia ,ahuttlies jr ace .o -t ecasine 5 wh c i .in'xm aice. $1 911 th 'u iaile o flan e 12 ..a,.fr,e .u t .th iv t m i m t in clqckw direstiehi and- Suc n rota the be 'fcrank levers M9 inclocl ection about the 'i ixfid piv ts. .IAL The. arms alofthese levers tb com es the springs. 1,43; .essqo rhpw fir. ,as the oscillating movement ofiarmi zflicarries socket] 25 and channel l 28. clirec lly clQW the f l.l.IQE theQsaidYcasing 5 cah' noveinto the Tel. -This relcases 'the arms". ldfia. The

',qne"direction a extend into the chute iii lfi as springs I43 then snap back to uncompressed position causing counterclockwise movement of the bell crank levers I50. This snaps the arms I45a downwardly and positively pushes the said casing into the channel I25. At the same time, the noses I450 on the arms I i5a extend into the chute I III and bar the succeeding casing 5 from moving over opening H5. When the oscillating arm I20 begins its stroke toward the injection position, the arm I21 arrives under the opening I I5 before the noses [550 clear the channel I II) to permit the next succeeeding casing to roll to the opening I I5. The movement of the arm I45 for the clearing action is controlled by the linkage I48, as hereinabove described. The transferred casing 5 carried by the arm I 20 is moved as above described, toward the injecting station II.

Station II (Figs. 1 to 4 inc.)

It will be remembered that during the transfer the turret member 28 continuously rotates. The transfer stroke of the arm I20 at a time must, therefore, be at the same angular speed. Also the shape of the groove in its operating cam I35 must be such that the channel I25 and a chuck sleeve 54 are aligned while moving from station I to station II and arrive at the station II simultaneously so that the casing carried in the channel may be pushed from channel I26 longitudinally directly into the sleeve 34 while moving from stations I to II. Further, the injector mechanism carried by the arm I20 must rotate synchronously with the angular speed of turret member 20 during the injection operation. This is also controlled by the groove in cam I36.

Station II toward which each casing 5 is transferred individually from station I by the arm I20 is shown to the left of the vertical center line in Fig. 2. It lies at or about 22 angularly beyond station I in the direction of rotation of the turret member 20.

It is necessary that the chuck sleeve 34 be uncoupled at this time from the driving belt I02 and also that each annular ring 2'! be unlocked for free longitudinal movement in its sleeve 25 during their orbital travel from just beyond station I to just beyond station III, so that transfer, injection and proper location of each casing in its chuck can be effected. To this end the hood 9'! which is substantially concentric about the rotary turret member 20 and spaced therefrom is provided on its internal surface with a cam I55. This cam is a suitable arcuate segment which is suitably secured to the inner face of the hood 9? as by the bolts I56 extending from an annular groove 91a of the hood (Fig. 4). The cam is positioned to lie within the rolling path of the cam rollers 51 which operate the wedging or looking members 52a as hereinbefore described. The cam I55 is so positioned on the hood 9'! and so admeasured that substantially between a point just beyond station I to a point just beyond station III any cam roller 6'! moving on it is pressed inwardly as shown in dotted position in Fig, 4. While such position of such a cam roller 61 is maintained its associated wedge member 62a is retracted and disengaged from its annular ring member 21 sufficiently to permit free axial movement thereof with respect to the sleeve 25. The starting end I55a of the cam I55 is slightly tapered so that each roller 61 will easily ride onto it. The leaving end I551) of the cam I55 is provided with an abrupt shoulder I550 so that when any roller 5'! leaves this end it snaps ofi quickly so that its associated spring II! can ram its associated Wedging member 62a into tight locking relationship with respect to its ring 21. While a roller 61 engages the cam I55 its wedging member is in retract-ed or unlocked position and its chuck sleeve 34 with its ring 21 are free to move longitudinally. Also at this time its sheave or pulley 55 is not engaged by the belt I52 so that its chuck sleeve 34 is not rotated on its own axis.

The timing relationship between the angular speed of arm I20 in its transferring stroke and the speed of rotation of the turret member 23 is such that before the arm I29 reaches station 11 a freely movable chuck sleeve 34 becomes aligned with this casing carried in channel I26 and continues so in motion toward station II. On alignment, injecting mechanism is actuated to push the casing 5 carried in the channel I25 into the chuck sleeve 35.

Injecting mechanism (Figs. 1 and 2) The injecting mechanism is illustrated in Figs. 1 and 2. It comprises an arm member I51, which in the embodiment shown, is integral with the arm I26 and is located in radial alignment therewith and in front of the latter (Fig. 1). The arm member I5! is provided with a sleeve portion I58 in axial alignment with the channel I26. A pushed or plunger I59 is reciprocally movable in the horizontal direction within the sleeve I58. The forward end of the plunger has a head I60. When the plunger is moved toward the turret plate member 20 the head I60 serves to push the shell casing 5 lying on the socket I25 into the chuck sleeve 34. It also serves to move the injected casing and the chuck sleeve 34 from the front F toward the rear R of the turret plate member 20 to the limit permitted by the width of the recess or slot 59, in the member 21 and then to exert sufficient pressure on the end 6 of the casin to wedge'the easing into the internally tapered sleeve 34 so that the so-wedged casing will be rotated with said sleeve when the latter is driven. In its opposite or retracted position, the plunger I59 is moved away far enough from the arm I25 so as not to interfere with the insertion of casings into the channel I26 at the loading station I.

Reciprocal motion of the plunger I59 for the injecting action and a return stroke is effected through a pair of bell crank levers IGI. One arm Ifila of each is pivotally coupled at I52 to a link I63. Each link I63 is attached pivotally at I64 to the plunger I59. Each of the bell crank levers IGI is suitably pivoted at I65 to a portion of the arm member I51. A second arm I5Ib of each bell crank lever I6I is coupled through a universal joint at I55 to crank rod I61. This rod is coupled through a second universal joint at I58 to a lever I69. The lever IE9 is suitably fulcrumed at I'III to the stationary bracket mm. This lever I69 is provided with a cam follower or roller III which latter engages in a suitable cam groove I12 pro vided in a cam member I73 also carried on and keyed to the drive shaft 89. In this way, rotation of the shaft 89 is translated into longitudinal reciprocal motion of the pusher plunger I59. By reason of the universal joint connections I56 and I68, the said reciprocal longitudinal motion of the pusher head IE0 is effected during the oscillatory orbital motion of the arm I25 and of the arm member I51 which is a part thereof,

The pusher member I 59 is timed with respect to the movement of the arms I20, I51 and the turret plate member 23 so that it starts its pushing or injecting movement on the front end 6 of the d3 ca in at the; insta t tha s ch in ried i annel; i 1 :and a ork hold r hu sleer ,IM on the turret member come into, registry. This ;will occur after the particular chuck sleeve h s to the most rearwardposition of the latter with r spect to the turr t m m er 29 rmitt d y t Wid h f slo 53 n membe 6 mmed ately after this injection operation is completed by the pusher- ;head ice, the cam H3 operates'crankrod 557- to retract the plunger S59 quickly. Cam I36 also then operates crank-rod l2 to return oscillatin rm: ii ,qu k t l a ng t t onl' so that-the next succeeding shell easing 5 fromw-chute Hi can be injected into the next succeeding chuck sleeve '36 arriving at station I.

1lt is now necessary to start proper location of the-injected shell casing at station II for the tool- .ing operations to follow. To this end, frontand rear locating devices are provided in the locating regionwhich exists between stations II andIII. These locating mechanisms are illustrated in Figs. 6 "tQ-lZflHCIU SiVE. Since the rear end 9 of the casing 5 is in the first position to be operated uponby a rear locator, the latter will be first described. It is shown in Figs. 6, 9 andl2.

The rear Zocator mechanism (Figs. 6, 9 and-12 In Fig-San injected shell casing 5 is, shown in its most rearward position with respect to the turret member 28. This is its positionjust after leaving station II after injection has been completed. At this time its rear end 9 is furthermost tothe right of-Eig. 6. Before any tooling operations can be properly undertaken with respect to the shell casin it must be shifted longitudinally in the opposite direction-to a predetermined point.

To this end the rear locator H5 is provided. This rear locate-r is positioned between the stations II and III at the rear sideR of the turret member 28.

The rear locator H5 comprises abracketrnembar are which is suitably supported on the bearing block l2 as shown in Fig. 6. This bracket member has two pairs of upwardly extending arms ill, H8. A horizontally extending plate member IE9 is pivotally secured to pairs of-suitable link members lilo idea, which in turn are pivotally connected to the respective arms H1, H3. The linkage resulting is such that the plate member [leis always maintained horizontally for the purpose to be presently described while it is capable of adjustment toward and away from the -turret plate member 28.

Upright studs 58! 32 extend from the top surface of the plate member W9. A longitudinally extending arm B33 is remcvab-ly and adjustably supported on-the stud I at. A similar arm its which is longer than arm E83 is similarly supportedon the stud E82. The arms are arranged pa-rallelly and. extend toward the rear face R of the turret plate member as. Arm 183 has a downwardly extending axle stud I85, which car- :14 i o. u tanti yrplan v r icallext r a u face to h Jmfin. The lchain s r ched omparatively tightly betweenthe two sprocket wheels 35, I88 and because ,of the-relative diilerence in lengths between the two arms L83 and l8 4,is,an-

;gularly disposed with respect to the- -planeof the rear face of the turret memberiil (Fig 12) The portion ofchainitil in the region of sprocket I86 ,is further away from the turret membergjfl than thatin the region of sprocket-{-88 because arm 184 is' longer than arm {83. The latteris located approximately opposite or just beyond station II in the direction of rotation of the turret member 20, while arm i841 is located approximately in the region of station III.

The supporting plate member H9 ,isanormally --positioned as shown .inF-ig. .6. Means are provided tending ,to maintain it in this. position. In

the embodiment shown, this-means compriseslan arm member l 9! suitablyattached totheplate H9 and having a depending part 892. A,suit able adjustment belt 693 provided .withlocking nut .;l9. l is.threadedly supported in the part lei. ,A

tension spring I95 is attachediat one end, itiia to the ,bolt I93. Its other end 551) is attached to a fixed member 1% extending upwardly from the bracket memberv H5. .-Also pivotally. supported at E9! from the fixed member 595 .isarod member I98. rod memberv 5&3 iS-DTOVidGd :With av longitudinal .bore I99 ,at its opposite ..end

Changes in the setting of the pin of course effect corresponding changes in the limit of approach of the chain to the rear-face of the turret member 26. The chain hi9, however, may be moved rearwardly away from the face of the turret 28 against the opposition of spring E95. -This permissible rearward movement isa safety means-to take care of a situation wherein the casing' may be of undue length or of improper diameter so that it projects too deeply in the workholder or chuck sleeve In such therear edge}! of a defective casingi'5 when ongaging the chainwill move the entirerear locator mechanism backward against the opposition of the spring I95.

On the-other. hand, if successive'of shell casings are ofproper lengthveach will begin to engage the vertical face of the chain 39 .with its reanend 9 just as it leaves station II andadja cent that front portion of the chain which furt estaway from the rear-surface of the torret-member- '28. As the latter rotates toward sta- ,tion'rIII' the angular disposition of the front face {33a of the chainwill act asa cam which pushes back theparticular shell casing 59in its longitudh nal direction toward the front face of the turret member-2,9. Since the chuck sleeve carrying this particular shell casing and itsannular mam-- lber -2jl,are thenstill freelyslidabie in the longitudinal QirectiQh, they, too, ,willbe pushed back ward .longitudinally to, a corresponding degree so that when a particular shell casing arrives atstationxl'llsit.andntheother parts jusumen-

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