US2245578A - Apparatus for rapidly cooling bearings and the like - Google Patents

Description

June 17, 1941. W s, ENDRlCH |51- AL 2,245,578.

APPARATUS FOR RAPIDLY COOLING BEARINGS AND THE LIKE CHARLES E. EGGENSCHWILE R INVENoRs www aannemen illu-inl.

3 Sheets--Sheet 2 FIG.6.

Filed March 4.. 1940 W. S. ENDERICH ETAL APPARATUS FOR RAPIDLY COOLING BEARINGS AND THE LIKE June 17,l 1941.

FIG?.v

INVENTORS WINFIELD $.ENDERICH CHARLES E.EGG ENSCHWILER ATTORNEYS Fuss.

June 17, 1941. w. s. ENDERICH ET AL APPARATUS FOR RAPIDLY COOLING BEARINGS AND THE LIKE Filed-March 4, 1940 3 Sheets-Sheet 3 INVENTORS WIN FIELD S.ENDERICH Patented June 17, 1941 APPARATUSLFOR RAPIDLY'I C0 CLIN G BEARINGS AND THE LIKE Winfield kS. Enderich and Charles E. Eggenschwler,I Detroit, Mich., assig'nors to Boh-n Aluminum & Brass Corporation, Detroit, Mich., a corporation of' Michigan Application March 4, 1940, sel-inno. 322,258

(o1. 26eel l scia-im, The inventionrelates to.- means for rapidly and uniformly chilling highly heated .structures and has more, particular reference to. themanufacture of bearings. Certain alloys or mixtures Yof metal used in the manufacturel of. journal bearings` can be` greatly improved .in physical characteristics by rapid soldication from a molten. state... ForV instance, a molten mixture. of. copper and lead if` permitted togr-adually solidify, has very different` physical characteristics from the same mix,- ture if rapidly chilled, AISO, Where .such metal mixtures are used. for lining a supporting shell the whole structurev isgimprovedby rapid chilling from the exteriorof theshell.

It is the object of the instant invention to reduce to the minimum the time required for complete chilling and it is a further object to obtain uniform chil-ling in allv portions of the structure. With these objects in View, the invention consists', first, inthe novel method, and second, inthe apparatus as hereinafterset forth.

In the drawings:

Figure 1 is a plan view of the apparatus adapt.- ed for carrying; Out the. improved method;

Figure 2 is .a side elevation thereof.;

Figure 3 is .a vertical central section showing some of the parts in elevation;

Figure 4 isa sectional elevation on line4.-.4 of Figure 1;

Figure 5 is asimilar View on line 5 5, of Fig.-

ure 1;

Figure 6. isa vertical. central section through the verticallyadjustable table and lmechanism for rotating the same ;7 y

Figure 7 is. an enlarged plan View. of one of the jet nozzles;

Figure 8 is. av vertical central section thereof;

. Figurer 9 is, an end elevation.

Rapid chilling of articles isV sometimes eifected by immersing the same in Water or .other cooling liquid. When, however, the temperature of the article before immersion is .relatively high in comparison with` .the boiling. pointy of the liquid,

this method is not very effective,y Vfor the reason.

th-,atavapor envelope. isformed around the article which holds. the liquid out of contacttherewith. A much more elective method is by spraying the liquidv against the surface of the, article, but ,here there. is danger that. all portions of the surfacemay .notbe chilled at the. Same rate. With our improved. apparatus a Vhigh degree of uniformity in chilling isobtained bythe use of a circumferential series of closely spaced spray nozzles for .directing jets radially inward against an article arranged at the center of the series.

Each nozzle is constructed to.- -formathin fan.- shapedjet in a plane extending axially'of the article so as to cover all portions of ther-length thereof. and Wherel the. spread of the jet is inf sufficient for the entire length, a plurality of circumferential' series. of jets may ybe employed. Tofurther insure uniformity a relativerotation is imparted to thel article and jets, preferably by supporting the article on a slowly revolving table coaxial with a series of stationary jets. 'I'his table is also preferably vertically movable so that it may be elevated vabove thev jets into a position forinstan-taneously receiving the article when removed from thev heating furnace and quickly lowering it into operative relation tothe jets. l

In detail,y Ay is, a `cylindrical casing vor shell supported on a suitable standard B and having mounted, thereon the radially extending jet nozzles C. The latter are arranged in circumferential series and are connected by conduits D and E with circular conduits F and; G, respectively for supplying water and air. As specilically show-n, .there are Ytwo-such series surrounding the casing A; one arranged above the other.

Arranged, axiallyA within the. casing A is a rotary table H which is mounted on. the upper end of a shaft I vertically ,slidably engaging bearings .J on, a housing K. This housingfis supportedfby a. spider B .on the standard B -and encloses a reduction gearing including a Worm gear L and worm L. The worm is mounted on a horizontally extending shaft I..2 which atits outer enden-ters a housing lVlI foren'closing further reduction, gearing (not shown). N is an electric motor or other driving means mounted adjacent to .the housing M from which power -is transmitted through the gearing and shaft-L2 to the Worm L and worm gear L. The shaft I is splined lto thel Worm. gear L. so as to permit raising andr lowering the table H While continuing to rotate the same. This raising and; lowering is eiectedV through the medium of a shifter member Oforked casing where thework can be easily placed thereon. A step or shoulder A`2 *atl the upper Vend of the S1915 can be engaged with the handle to hold nozzle is a disk C3 having a verti-cally extending K' lslot C4 therein. This slot intersects a conical recess C5 in the inner face of the disk which directs the stream of commingled water and air v through the slot and in a fan-shaped jet, The disk C3 is secured to the nozzle by a threaded cap member C5, and pins Crl on the disk engaging corresponding apertures in the Kcasing C serve to hold the disk with the slot C4 in a vertical plane. Also, the cap C5 is axially adjustable which in combination with the adjustable bushing C2 permits o-f radially adjusting the nozzle. The casing C is secured to the casing A by ears C8 and bolts C9, thereby supporting not only the nozzles, but also the conduits D, E, F and G. Valves F' and G con-trol the supply of air and water to the conduits F and G, an-d valves F2 and G2 similarly control the supply to the corresponding conduits of the second series.

' Operation shell P of steel yor other relatively high fusing metal, a lining P' of molten bearing metal such as a copper lead mixture, a central core memb-er P2 preferably formed of graphite and end caps lP3 and P4v for securing this core in proper relation .to the shell. There is als-o a clamping plate P5 at the upper end of the bearing. This structure is preheated t-o a temperature considerably higher than the melting point of the bearing metal, after lwhich the molten bearing metal is poured into the ycavity between the shell and the core. The latter operation may, if desired, be -performed after the structure is placed on the table H in its rai-sed position. The tabl-e is then l-owered by means of the handle O3; the motor N is energized to communicate rotary motion, and the valves F', F2, G, and -G2 opened to supply water and air to the jets.

To hold the structure in place during the cooling operationwe preferably provide a clamping means comprising the plate P5 placed above the cap member P3, and a clamping fin-ger Q. The latter is specifically shown in Figure 4 and depends from a radially extending arm Q provided at its outer end with a handle Q2 and mounted on a vertical rod Q3 s1idably engaging a tubular housing Q4 mounted on the supporting standard B. A coil spring Q5 sleeved upon the rod Q3 within the tubular housing Q4 bearing at its upper end against said housing and its lower en-d on a shoulder :on vsaid rod, serves to resiliently draw the rod in a downward direction. However, by means of the handle Q2 the rod may be raised or lowered. A'pin-` Q6 projects from the lower end 'of said rod' through a slot Qr1 in the tubular housing, which slot a-t its upper end is laterally offset to form a shoulder Q8 on which the pin Q6 can rest. This permits of first raising the rod together with the arm Q' and finger Q, and then swinging it laterally out of the path of the table L, when the latter is raised or lowered. Thus,

during the placing of the bearing on the table and lthe pouring of the molten metal, the finger Q is out of the way, but after the table is lowered the handle Q2 may be operated to lower the parts and to arrest the finger Q at the center of the clamping plate P5. This will hold the work in place during the rotation of the table and the cooling of the external surf-ace of the shell through the impinging jets of air and water.

'Bearings as above described are of different length-s so as to require differently positioning the table during the cooling operation. This we accomplish by a supporting roller bearing R which is mounted on a laterally extending arm R having a vertically extending shank R2 passing through a stationary bearing R3 supported on the spider B and vertically adjustably secured therein by a set screw R4. Where the bearing to be chilled is relatively short, the shank R2 is raised in the bearing R3 and clamped by the set screw R4 so4V that the roller R will support the table in this raised position. Thus, the most favorable adjustment with respect t-o the spray jets may be obtained.

What we claim as our invention is:

1. The combination with an annular casing, of a circumferential series of radially inwardly directed jet nozzles mounted on said casing, each nozzle being adapted to formY a thin fan-shaped j'et in an axial plane,and means at the center of said casing for supporting and relatively rotating work to be chilled, said jets impinging upon closely spaced parallel lines in the surface of the work andk extending throughout the length thereof. v

2'. The combination with an annular casing, of a circumferential series of radi-ally inwardly directed jet nozzles mounted on said casing in substantially equispaced relation to each other, means for supplying air and water to said nozzles, the latter being adapted to form thin fan-shaped jets in axial planes, and means at the center of said casing for supporting and relatively rotating work to be chilled, said jets impinging upon closely spaced parallel lines in the surface of the workv and extending throughout the length thereof.

3. The combination with an annular casing, of a circumferential series of substantially equispaced radially inwardly directed jet nozzles, means for supplying air and water tosaid nozzles, the latter being adapted to form thin fan-shaped jets in axial planes, a table located at the center of said casing and vertically adjustable to receive the work above said casing and to lower it within the same,.and means for rotating said table relative to said casing, said jets impinging upon closely spaced parallel lines in the surfaceof the work and extending throughout the length thereof.

4. The combinationwith an annular casing, of a circumferential series of radially inwardly directed jet nozzles mounted on said casing, means for supplying air and water to said nozzles, the latter being adapted to form thin fan-shaped jets in axiall planes, a rotary work supporting table located at the center of sa'id casing, means outside -said casing for raising and lowering said table. and means .for rotating said table relative to' said casing, said jets impinging upon closely spaced parallel lines in the surface of the work and extending throughout the length there- 5..The combination with an annular casing, of a circumferential series of radially inwardly sai-d casing, and means fol' clamping the work upon said table during the rotation thereof, said jets impinging upon closely spaced parallel lines in the surface of the work and extending through- 5 out the length thereof.

W'INFIELD S. ENDE-RICH. CHARLES E. EGGENSCHWILER.

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