US2433065A - Gyrocasting apparatus - Google Patents

Description

3 Sheets-Sheet 1 G. A. RUBISSOW GYROCASTING APPARATUS Filed Jur 1e 24, 1944 Dec, 23, 1947.

Dec. 23, 1947. G, A, RUBlssow' 2,433,065

Y GYROGASTING APPARATUS Filed June 24, 1944 :s sheets-sheet 2 Dec. 23, 1947. G. A. RUBxssow GYROCASTING APPARATUS Filed June '24, 1944 s sheets-sheet 3 Patented Dec. 23, `194'7 UNITED STATES PATENT Q-FFICE 2,433,065 GYRocAs'frING APPAR'AfrsV deuren A. Ritss'w, New York; i?. Application June 24, 1944,` seriaLNm 541,953V

(cl'i isi-2m" This application is-av continuation in part ofthe United Statesv latentKr application, Serial #525,028, filed Marchi 41,.. 1944,.j for Centrifugal casting.- appa-ratus and method.

This invention relates. to various types of centrifugal. casting or treatment apparatuses and methods-y for casting. various materialsv or treatmentof. the: same under the influence of. two simultaneously.-actingA centrifugal forces,4 and may bev used in combination. with the improvementsv and-.methods .patented in thei United States Patents 2,208,230; 2,222,266; and` 2,-325gf19.`

TheseL apparatuses may be usedv4 in combination with molds for casting therein of various machine parts, precision parts, all` types of'u ingots; alll types of objects produced by casting. of. fusible.` mateJ rials A preferred embodimentofthe: present.inyenf` tion: will be hereinafter` described and illustrated on. the accompanying drawing;V given: merely by way of example@and?inwhich:

Figure 1 is?. a (Slides-Sectional.: side. View with partsbroken out of. oneembodiment'of the ap"- paratus.

Figure 2'is1a of Fig. 1.

Figure 3' isi an enlarged' figure of the portion ofthe apparatus shown.V inf Figurel 11.J

One embodimentof this' invention` comprisesf a base I0; a non=rotating`f shaft II mounted on said base, af collar I2fmvount'ed.around4 said shaft on saidl base; a bearing. I-'3 the innerpart ofwhich rests on said collar |2 and-thefouterfpart offwhich isfconnectedf toapuflley IlIm (which may also-be a gear, if a gear isa-used for' powertransmission) Another ring |52 ifdesiredv may be interposed between the outer.v part ofT the bearing? I3i andthe bottom platef I'I of. theframeiof the' apparatus. The upper plate |i8 should'A preferably be rigidly interconnected to the bottom plate? by means of bars or plates I9 shown on Figure-2.

t A non-rotating gear ZIJ-may be mounted either rigidly on the' shaft II or mounted thereon so that it can s1idei; e; niove up' and'4 downl along the longitudinal axis X-X for. which. purpose a member. 2|), for instance; comprising'.` a keysupporting., bar 2 I provided. withakey 2'3, operatively engaging a`r g-'roove"orrrecess24 provided in a non-frotating gear 20;. The bar' 2| may be mounted slidably ina respective'groovez.- 22 pro-l vided vin said. main shaft I I whichishaft.isV a` nonrotating one, and serves as a support for the plan View partly in cross-section H. 'rnekey 231ssnownf mits top position in whichI the gear 20 operatively engages theA gears 26721,- which are thus accordingly rotatedi When the key 23 ispulled'downwardly it forces the non-rotating gear 20,V mountedslidably on the shaft I Il alsoA toA slide downwardly and thus it disengagesf from the gearsuZE-ZI.- By pushing the bar 2|- to` and.fro ,the gear` 20ma-y be disconnectedu from gears 25, 26),.. whichF are rotatably mounted on respective bearings 28; 29,. theinner parts of bearings being either rigidly or slidably mounted on the outerwalls 30A of the rotating pouringgate 2l, which may be provided with one; twopr more exit orifices 3| When the inner par-t ofH each ofthel bearings, according to` thisinvention. is mountedv slidably, aston-ring-` 32- may be'rigidly mountedlon'wall-A 30 with a reasonable clearance provided between the'v bearingand` the ring in' order to permitlt'hat the bearing together with'thefgear 25.26-may slightly slide;

'The rotating` pouring; gate 2T may'bemaderfof refractory m-aterial or of reinforced refractory material,` or itsl walls may be made of metal and refractory material ficey34 flaring towards the bottom` 35 in which bottom one or more openings 36; 3T may be provided.` These openings; form the entrances into channels which emerge into exit orices 3|,-

g The rotating. gate 2-'Ivr may be mounted on a bearing 38, the inner side of` which may be mounted rigidly or mountedslidably on` the' shaft II and the outer side also may befeith'er mounted rigidly or mounted slidably on thev wallsl of the rotating gate.-

andradial loads.;

The frame I7' rotates around axis X-"X by means or amotor 30; eventual-1y through the in-4 termediary of a clutch 40` and, if desired, o'f a speed box`- III,4 provided with abrake,A 42A.. This is shown diag-ra- I-nmatically.

When the frame |1-I8thegears 25; 26, rotate aroundX-X axis,.- they engage gear 20.` and roll due tothe fact that the` rotating. gate 21 isrigidly mounted totheframe I1, I8;

Between the bottom and upper plates.- of the'k frame, an end-plate 413 is mounted for each exit orifice.- Said-end-plates may be either rigidwith the-frame or mountedas shown on Figures land 2&i..` e... slidable. in: a groove? Ide-andy having. a `key member 45 shaped` for instance.V 'as shown? on Figures l and 2, viz: having a part of its contour coincide with the radius R. The groove 44 may guide the key 45 for a desired distance shown by arrow 46 without rotation. The groove 44 may furthermore acquire a circular form by the radius R so that when moved for an additional distance 41 the key will be in position to rotate in the circle so formed, thus enabling the end-plate to be rotated around the axis IIS-48.

The end-plate may carry a bearing 49, the outer surface of which rests on said end-plate while the inner surface thereof is connected to a shaft 50 rigidly mounted on 'a support y5I on which casing 52 of the mold 53 is also mounted.

The top of the casing 52 is interconnected with another support 54 keyed or otherwise affixed thereto, and provided with one or more grooves or openings 55 in which keying member or teeth 56 are mounted. They may be slidably mounted if desired and form an integral part of the gear 26 or be separate unit 51 shown on Figure 1 as mounted on gear 25. Such unit may be of any shapei. e. square or circular. It will be found advisable to make it circular and provide it with a recess of a larger diameter than that part which enters into the hole '55. This will permit the recess to become a shoulder 58 which, due to centrifugal force, will press against the support 54 when the gear 25 slides along the surface 59 due to the clearance provided between the ring 32, and the gear 25.

This latter improvement is of great importance because it enables bearing 29 to work almost always on a radial load, and to establish perfect contact between gear 25 and the support 54 which enables the mold to rotate around the axis Y-Y gihilei the frame I1, I8 is rotated around the axis Another important embodiment of this invention provides lubricating means which may be either a lubricating box 6!) mounted rigidly on the plate I8 and having a channel, the crosssection of which should be well-controlled and interconnected by contact or otherwise with a channel SI1- A leading to bearing 49.

Another lubricating system may comprise the provision of one or more shields 6I, 62 mounted rigidly on the gear 26. The oil is introduced through a channel or tube 53 provided in the shaft II and conducted to the upper part 64 of the shaft, where a member 65 may be provided having a collar channel 66 tightly engaging the collar channel 61 mounted in a rotating collar 68 rigid with the Wall 69 of the rotating gate 21. Another channel leading to bearing 28 may be provided, through which the oil may pass to lubricate this bearing. It will thereafter emerge on the shield 6I or 62, or in between them, according to the design, and thereafter be thrown on to another shield 1I. The shield 1I may be so formed that its contour 12, 13, 14 will be inclined towards the bottom and end-plates I1, I8, so that when the oil is assembled in a groove 15 it will automatically lead to the channel 16 and 11 which may be connected accordingly to channels 18 and 19 to oil the bearing 49.

The interconnection between the channels 19 and 11 and 18 and 16 may be made either by tight contact or by bayonet or screws or other pressure-contacting means. Spring effect may be used therefor, also, to increase the tightness.

On Figure 1 is also shown another type of oiling system, which although similar in general to that described above, differs in that the oil is fed to the top. For this purpose, the gear 25 may be provided with a shield 80 or a plurality of shields similar to 62 and 63. The collector collar BI may have the shape shown on Figure 1, i. e, its open edge 82 may be perpendicular to the axis Y-Y while the channel forming part 83 may incline from bottom to top thus urging all the oil towards the top exclusively by the centrifugal force around the axis X-X. The oil will then emerge through channel 83 and feed the bearing 84 by means of suitable interconnections.

If desired, the oil after passing through bearing 49 (or respectively, 84) may be re-channeled through channel 85 into a storage room 86 which may eventually .be provided with an outlet 81 and a vane 88.

The initial feeding of oil through the channel of 63 or a plurality of similar channels may be made at any desired pressure.

Any type of mold may be used in combination with this apparatus-permanent, semipermanent or non-permanent.

The apparatus described has a non-rotating shaft II. However, it is obvious that the shaft II may be made rigid with the rotating gate 21 and rotatably mounted in a base I0 and provided with a pulley or gear rigidly afxed to the shaft II, so that the shaft may be simply rotated around a bearing through the intermediary of which it will then be mounted in the base I0.

Obviously the frame I1, I8 will then form one rigid member with the shaft II while the gear 20 is rigidly affixed on the base so that it does not rotate.

This arrangement is self-explanatory for everyone skilled in the art.

The end-plate 43 may be provided with a holder 89 which is rigidly affixed thereon, and so designed that it will slide in a groove 90 provided in the bottom plate I1. A part of this holder may be provided with a recess 9| and if desired made of or lined with babbitt, 92 for instance. A small clearance should preferably be provided between the recess 9| or the lining 92 and the casing 52 in order to avoid any contact during the rotation of the mold.

When the mold is removed, the end-plate and the holder slide; the recess 9I prevents the casing of the mold from falling and the key-member 45 moves to the circular groove 93, Figure 2. The end-plate may thereafter be turned around the axis 48 until the casing of mold may be removed manually or otherwise.

For better handling of the end-plate, a handle 95 may be provided. The bottom and top plates I1, I8, may additionally be interconnected one with the other, or provided with a guard 94.

Having now ascertained and particularly described the nature of this invention and the manner in which it is to be performed, I declare that what I claim is:

1. An apparatus as set forth in claim 6 wherein means are provided to supply lubricating oil through lubricating conduits mo'unted in said apparatus at least one lubricating shield is rigidly mounted on said rotatable gear and rotatable therewith, and channeling means being mounted on said frame to receive the lubricating oil emerging due to the action of centrifugal force from said shield, lubricating channels being provided to interconnect said channeling means with the bearings to be oiled.

2. An apparatus as set forth in claim 6 wherein means are provided to supply lubricating oil through lubricating conduits mounted in said apparatus at least one lubricating shield is rigidly provided on each said rotatable gear and rotatable therewith, .channeling means being `mounted on said frame to receive the lubricating oil emerging due to the action of centrifugal force from saidshield, a main lubricating channel being provided in said main sha-ft leading to a first around said first collar-groove and rigid with respect to said frame and rotatble therewith, an exit channel interconnecting said second collargroove and leading to at least one of said bearings.

3. An apparatus as set forth in claim 6 wherein means are provided t supply lubricating oil through lubricating conduits mounted in said apparatus said main shaft is provided with a 1ubricating groove in which a lubricating tube is mounted, the entrance said third bearing provided in said end-plate.

4. An apparatus as set forth in claim 6 wherein said end-plate is provided with an oil storage chamber rigidly mounted in respect thereto, oilconducting means being provided to distribute the oil from said storage chamber to one or more of said bearings for their lubrication.

5. An apparatus as set forth in claim 10, wherein said frame is provided with a lubricating tank leading from said tank, being provided for 1ubrication of at least one of said bearings.

6. A gyrocasing apparatus prising at least one mold-casing with a mold having a main gate pla-ced therein and a rotatable pouring gate rigidly afxed tatable coaxially with said main shaft, said rotatable pouring gate having on its top an entrance orifice flaring towards the bottom of said channel, second bearing mounted thereon, said second bearing having an outer bearing ring operatively interconnected with a rotatable gear mounted thereon, a non-rotating gear being mounted on said main shaft and coaxially therewith and being operatively interconnected with said rotatable gear, one end-plate per each mold mounted on said frame through the intermediary of a keymember and guide-grooves in which said keymember slides and rotates, locking means pro- "vided to nte'locl;said :end-platewlth said frame,

:provided in said `end-plate, .hav-

:part of `said mold-casing which :is closer to `said end-plate, a second `surment-niember being mounted on that part of said 'mold-casing which is closer `to said rotatable `port-member "being 'provided with means operameans to operate said first means, whereby said non-rotatable gear may rotating gear.

8. An apparatus as set forth in claim 6 wherein said second bearing is mounted slidingly on said gate casing.

9. An apparatus as set forth in claim 6 wherein said second bearing is mounted slidably on said gate casing and said mold-casing is a cylinder, one side of which cylinder is in contact with a cirin which said cover is provided, port-member.

10. A gyrocasting apparatus having at least one mold-casing with a mold having an entrance orice simultaneously rotatable around two axes of rotation, the first axis of rotation and a second rotation, said axes being at an angle one non-rotatable main shaft, a non-rotatable gear coaxial with said non-rotatable main shaft and mounted non-rotatably in respect to said frame, at least one rotatable gear per each said moldcasing mounted in a plane perpendicular to said second axis of rotation, and able to freely rotate about it, a pouring gate rigid with said frame and rotatable therewith, and having an entrance opening on the top thereof concentric to said first axis of rotation, said entrance opening flaring downward to the bottom of said pouring gate, at least one exit orifice per each said mold being provided in said bottom of said pouring gate, an exit channel leading from each of said exit orifices into the respective entrance orice of each said mold, said exit channel passing through an opening provided in said rotating gear and coaxial with said second axis of rotation, while also coaxial with said exit channel and with said enond axis of rotation, said mold-casing being mounted rotatably between said rst and second bearing means interlocking means being provided to interlock said rotating gear with said moldcasing.

11. An apparatus as set forth in claim 10 wherein means are provided to engage and disengage said non-rotation gear with each of said rotating gear.

12. An apparatus as set forth in claim 10 wherein, said non-rotatable gear mounted on said main shaft is provided with first means enabling it to slide to-and-fro on said'main shaft and with second means to operate said rst means, whereby said non-rotatable gear may be disengaged from said rotating gear.

13. An apparatus as set forth in claim 10 wherein, said second bearing is mounted slidably in respect to its own axis of rotation.

14. An apparatus as set forth in claim 10 wherein, said second bearing is mounted sli'dably in respect to its own axis of rotation and wherein said mold casing is a cylinder, one side of which cylinder is in contact with a circular flange provided on a circular cover provided on said mold casing.

.GEORGE A. RUBISSOW.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 803,799 Voelke Nov. 7, 1905 1,320,910 Perry NOV. 4, 1919 1,341,670 Powell June 1, 1920 1,474,432 Gmson Nov. 20, 1923 1,998,897 Kay Apr. 23, 1935 2,222,266 Rubissow Nov. 19, 1940

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