US1346259A - Machine for trimming valves - Google Patents

Description

A. E. scHuEnEa. MACHINE FOR TRIMMING VALVES. APPLICATION FILED MAR. 23, IBIS.

1,346,259. Patented July 13, 1920.

3 SHEEIS-SHEEI I.

m mIIIIII A. E. SCHLIEDER.

MACHINE FOR TRIMMING VALVES.

APPLICATION msn M^R.23.191e.

M2 55: @d NM/. y may y.

A. E. SCHLIEDER.

MACHINE FOR TRIMMING VALVES.

APPLICATION FILED MAR.23, 1916.

Patented July 1.3, 1920.

3 SHEEI S-SHEET 3.

s'rnrsselrsn'r OFFICE.

AUGUSTUS E. SCEALEDES), F DETROIT, l/UGAN, SSGNUR T()4 SCHLIEI 'MANTL FACTURING CG., 01' DETROT, MHIGN, GQREORA'IION OF MICIG-N.

ivincninn For. @envie/imo VALVES;

Speecstion of LettersLetent.

intented Jill? 13, `1920:

Application filed March 23, 1916. Serial No. 861223.

To all when fit 'may @cime/iin:

lle ity known that l, i'iuons're's E. Faninlnonn, a citiz/,en of United 5%"1 l residinget Detroit, in the county of lll-Lyne and. State oli liliehgian, have invented certain new and useful linprovenients in Machines ior ri`i"'i1,iiini g l(alms, of which the following is aspecification.

illy invention relates to improvements in machines tor trin'nn'inp' vulves, and incre particularly ior trinnning the heads of puppet valves, such iiorlexample as are used es inlet and exhaust valves et explosive engines.

(lue of the objects oi in v invention isthe equipment of improved niennsto a screw machine, lathe, or other suitable metal wor ing` machine, :for simultaneously trimming,` e rilinluralityv of iiaccs or parts of a valve heed at a single operation.

iii 'further olji'ject isto provide means for this purpose which can he quickly and conveniently adj usted ior trinnningg; the heads or disks of puppet valves oi" vnrious sizes.

il still further ohjec is to lpil'ovide a niachine in' whichvnlve heads or other objects, cast or otherwise forined to slightly larger size than they are to have when iinished, will he trimmed in a incre economical, speedier and more expeditious insnnerfthafn has heretofore lbeen possible.

W ith these and other objects in view my invention consists in the novel features 0i construction; in the arrangement andconr hinatii'in oi? devices; andV in the peculiar construction, arrangement and combination ol,l parts andv elements to he hereinafter deserihed. and more particularly pointed out in the suhjoined claim.

lfigure'l is a side elevation of a screw nos` chine equipped with in v invention.

Fig'. 2 is e plan view of the saine with one end thereof broken away.

Fig. 3 is an enlarged cross sectiontaken on line 3-3, Fig. 1.

Fig. 1i is a vertical longitudinal section through the heed stock oi the machine and through the adjusting tool carrier adjocent thereto in which the euttinnj or trii'nining tools acting;v against the inner orT under side and the outer or upper side are carried.

Fig. 5 is fr plan view of the several cutting' tools, the-work holding' chuck, and the valve retained within said chuck.

Fig. l is :i side elevation oi one end of the transversely-disposed tool carrier' showing one of the tools of' said carrier cutting` against the head ofthe vaflv'e. i

lieiiereneenow hein'ghzrdfto the drawings Y in detail, siniiln'r n'inner'als referto similar 60 partsin the several ligures.

The r'eieren'ee nunierul Si designates the ranie of e. metal working' niechine which, as illustrated in this instance, isa screw ineclnne', hut inny he any other forni ofnretal` working machine provided with suitable ineens for positioningV the'valve or other workpiece, and whiehis cnpahle oii l'ntvinp,I applied thereto the tool carriers nirwahle toward and 'from the head of the' valve or' to'- ward and freni any other work-piece inn manner to he he'reinniiter'described.

T he traine Qfoi' tlreinnchine supportsthe hed or shears i() whiclilnis s heed stocl l1 at one' end provided with inner andoi'iter hearings 12, 13, respectively.

n ho'llow spindle ifi is journeled in the bearings 12, 'l, to.ivhich the shellor casing` or the work-gimpping; or holding chuck 15 is secured. tuitaliily fastened' to the hollow spindle 14% between the hearings 12, 13 is a cone pulley 1G havingnncliiviiig belt* 17 nip'- plied thereto to cause rotation of' seid spindle. Y

{slid-ably attnched'to the spindle lf-l neer its outer end is n clutch rin 1S, and fastened to said spindle adjacent seid clutch ringis a collerv 19 in which clutch levers 2l) are pivotfilly scoured, each clutch levenhaving a.Y long' arin 2l and a Vshort arin 22 at an angle to snirllongf arin. The' long' arrns oi`` seid levers" lie in'leoi'itact witlia tapered portion" Q3 iorrned on the clutcli ring 1S while the short :ii-ni oi said. `leversfextend through slots 2li formed intlie hollow spindle 14E. The collar 19 is locked in position on said spindle by al lockV nut 25 threaded onto the end of the spindle.

Arranged slidnhlfv in the hollow spindle 1.4i, which may he termed an outer spindle, is e second hollow or inner spindle 2G which is rotntehle with the outer spindle end'hss the core 27 oithe work 1gripping'- or holding clinch Vsecured thereto so that it moves lengthwise with said inner spindle. Said core is slotted lengthwise from s point near its inner end to its'outer end and the outer end is slightly enlarged and Inside conical to fit an. inwardly ilarinnepening in the outer end ofthe chuck shell or casing, which 5 engaged by the short inwardly extending arms 22 of the clutch leversl20, and when said levers are swung in one direction cause said inner spindle to be moved inwardly; whereasV when said levers are swung in an opposite direction, the inner spindle is free to move outwardly or rearwardly.

The swinging of the clutch levers is effected by the movement of the clutch ring 18 which is Vactuated by a forked clutch arm 28, the forked end of which Venters the annular groove 29 in said clutch ring and straddles the latter. rlhis arm is splined on a'carrier or supporting rod 30 fastened into the head stock in any suitable manner.

20 Arranged transversely in the-head stock is a rock-shaft 3l which has an armg32 secured thereto, and connecting said arm with the clutch arm V28 is a. link 83. The outer end of said rock-shaft is provided with a hand vlever 34 for voperating said shaft.

The parts thus far described are well known parts of a metal working machine and do not forni any part of my invention, and reference is had to said parts onlyfor 30 the purpose of illustrating the, manner of holding the work toV be acted upon; and it is to be understood that any4 other machine capable lof properly supporting the valve or other work-.piece and allowing the workpiece to beproperly positioned with refer- Y ence to the cutting or trimming tools, tobe' hereinafter described, maybe substituted therefor. Y l l y f Slidably mounted at the'opposite end of 40 .the bed or shears is a turret-.slide 85 which may .be moved lengthwise on the bed or shears by means of any common mechanism,

such as now provided for Vthis purpose inV screw machines j and other metal working machines of a similar nature. Any suitable means may also be providedto lock or retain said slide lin any desired position and to stopl the movement of the slide at the enact points desired. Mounted on said turret slide for rotatable adjustment, as is common, is a turret36 which maybe locked or retained in Yany adjusted position and which may be rotated during the sliding movement of the turret slide or independent of such sliding movement; such ,arrangements being in commonusa v Theturret has the usual peripheral sockets or openings 37 and in one of these a ram "or Ywork-positioning device 38 is fastened,

saiddevice comprising a shank 39 entered intoone of the sockets V37", and a head 40 having a concaved contact face 4l, the shank 39 being adjustable within the turret and locked "in any'adjusted position byfone of the securing screws42 withwhich the tur-l ret is provided. In the particular machine shown, the turret is provided with six sockets or openings arranged equi-distantly around the periphery thereof, and in a socket 0r opening adjoining that in which the ram or work-positioning device 38 is fastened, l secure a rougliiiig-tool holder 43, the tool holder being therefore arranged at anV angle of 60 degrees to the ram or work-positioning device. i

rlhe turret, turret-slide and parts carried thereby forni no part of my invention and the slide and turret shown is of that type in which the turret is caused to rotate through a one-sixth of a revolution alternately in opposite directions each time the slide is moved back and forth, consequently with the parts in the position shown in Figs. l

, and 2, when moving the turret slide toward the head stock, Vthe ram or work-positioning device has its anis coincident with that of the work-holding chuck and is moved t0 ward said chuck. Upon reverse movement of the turret slide the turret is Vmoved through a one-sixth of a revolution in the direction ofthe arrow del, Fig. 2, which brings the roughing tool holder in line with the chuck so that when the turret slide is again moved forwardly or toward the chuck the roughing tool will be brought into operation against the valve orother work-piece. Vllpon again reversing the movement of ,the

turret-slide the turret is reversed or caused to rotate through a one-sixth of a revolution inthe direction of the arrow 45, Fig. 2, so as to' again bring the ram or work-positioning device in line with the chuck. VThe mannerl of accomplishing this is not disclosed in Y the'drawings due to the fact that it is embodied in a type of screw machine in coinnion use'. lf desired, the turret may berotated independent ofthe turret slide, as provided for in some types of metal-working machines; l

Secured to the bed er shears' l() of the ma-4 chine in any practicable manner .is a table or fixed saddle i6 which has a pair of spaced lugs l? extending from one side thereof, in

which a shaft d8 is rotatably mounted having a gear wheel 49V secured thereto. Fastened to the bed or shears of the machine directly rotation `of the' pinion 52, whereby reverse' movement is imparted tothe gear wheel 49.. `t the opposite side of the `table or sad- Vdle a bracket 54; is secured, said bracket i having a double actingY lever 55 pivotally secured thereto, the lever .having its Vpivotal point between its ends to provide oppositelydisposed arms adapted to move in opposite directions, the end of one arm having a link 56 pivotally connected thereto, which linlr has pivotal connection with a transversely movable tool-slide 57 guided for movement on the table or saddle d6. Said table or saddle has a raised guide portion 58 with undercut side edges,y which guide portion enters a correspondingly formed guide-way 59 formed in the underside of the tool slide 57. nihe table or saddle a6 is provided on its underside with a gear rack 60 with which the gear wheel 59 meshes. A second toolslidc 6i is mounted for transverse movement on the tool slide 57 at' one side of the longitudinal center of the machine, and said tool slide 61 has an adjustable link 62 connecting it with the double acting lever 55. The tool slide is provided with a raised guiding portion 63 having undercut side edges, while the tool-slide 61 has a correspondingly shaped guide groove 64 formed in its underside adapted to receive said guide portion.

Detachably secured to the tool-slide 61 is a tool carrier 65, said carrier being fastened in position by a bolt 66 entered in a lshaped slot 67 formed in said tool-slide, said slot being arranged lengthwise so that an adjustnient of the tool carrier may be had in the ("lircction oi the axis of the tool-holding chuck. rThe tool-slide 57 is also provided with a T-shaped passage 68 arranged lengthwise, and by means ot a bolt 69 adjustable in said passage, a tool carrier 7() is secured to said tool-slide. The tool carrier 7() is therc'iiore also adjustable in the direction of the axis of the tool-holding chuck.

Secured to the tool carrier in any suitable manner are the cutting tools 7l, 72, respectively, these tools being adapted to cut or trim the different surfaces of the head of the valve or other work-piece simultaneously and preferably atter the cutting or trimming action against the same by the roughing tool 73 secured to the holder d3. The tool 7l is a grooved cutting or trimming tool, as shown in Fig. 5, and is adapted to cut or trim the seating face 74: of the head of the rvalve, the edge 75 thereof and a portion olli' the upper or outer surface 76, as clearly shown in said figure, while the tool 72 is adapted to trim or shape the collar or hub portion 77 of the valve head. ln order that these tools may be easily retained in proper working condition and that they may last for a considerable length of time they are constructed ot suitable cutting steel turned to a true circle with the marginal portion cut away, as at 78, Fig'. 3, thus providing an abrupt or radial cutting edge 79 which may be retained in sharpened condition and recede along the circular marginal portion until it is worn back to the cut away portion 76. Each of the tools 71, 72, has a peripheral outline conforming to that which the finished valve is to have at the points engaged by said tools.

By making the tools 7l, 72, circular and pro vidingthe cutting edge shown, it is possible to retain said edge in proper position, as it wears away by simply rotating the tool on the bolts 8() by means ot which they are scoured to the tool carrier.

rllhe roughing tool is provided to roughly cut or trim the edge 7 5 of the valve head and the upper or outer convex surface 76 thereof, and for this purpose it has a cuttingedge Set curved to the convexity wnich the upper or outer face of the valve is to have and with a cutting edge arranged in a horizontal plane to engage the edge of the valve head.

The operation otl the device is as follows,-

With the parts in normal position, which is that shown in Fig, 2, the valve is placed in positionl for cutting action by the operator by tl'irusting the stem thereoi2 into the tool-holding chuck, and by means of the lever the stem ot the valve is slightly engaged by the jaws of the chuck. The operator then moves the turret-slide forwardly so as to cause the ram or work-positioning device to engage the upper or outer convex surface oit the valve and force the valve-stem inwardly into the hollow spindle while a slight grasp is retained on the valve stem, thus assuring the proper positioning oli the valve when the turretslide reaches the end of its inward movement. it this moment the operator manipulates the lever 34 so as to cause the chuck to firmly grip the stem 'of the valve, and during this action the turret-slide may be returned or moved rearwardly by the usual mechanism provided for this purpose. During this return or rearward movement the turret will be rotated through a one-sixth ot a revolution to bring the roughing tool-holder 43 in line with the valve, and since the turret-slide is operated with the right hand, the lett hand is free` to actuate the tool-slides 57 and 6l. After the roughing tool-holder is brought in line with the valve the turret-slide is again moved forwardly to cause the roughing tool to act against the outer or upper face of the valve-head, after which the operator depresses the lever 53 and causes the tool-slide 57 to move on the table or saddle 46 and through the medium oit the links 56, 62 and double acting lever 55 compel the toolslide 6l to slide on tool-slide 57, the movements of said tool-slides being directly opposite so that the cutting tools 7l, v72, are simultaneously moved toward the axis oi the valve. lt is ot course understood that these parts are properly adjusted so that the cutting edges ot the tools 71, 72 will cut to trim the valves to exact size. `With n View ot limiting` the movement of the toolslde 57, seid slide lies en outstanding lug 8l through which e stop Vsei'ew 82 is passed that is :adapted to engage en upstending lug formed on the teble or saddle 4:6. Uien the several tools me moved out of engagement with the valve, the operator leeeens the clinch from the valve stem and enooves the Vak/e se that znnotlieiY may be positioned ter action thereon.

Having thus described my invention, what I eleim-sfin n, machine of the elie'ieetei described, the*eembiimtien with t support and e fotn'teble work-lielding element adapted to hold e Woi-k-piee'e, of a, tool slide movable at right vangles teY the Vexisoi' the Wolle piece, ineens fer uetuetingseid tool slide, e second tool slide movable on seid first- V mentioned tool slide at right angles to theY exis o the iWork-piece, e double-acting level? pn'otelly secured te seid support, :i

link Connecting one end of seid lever with

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