Патент USA US2404420код для вставки
Jußy 23, 1946. ` P. R. WHEELER" 2,404,420 4 BEARING ASSEMBLY Filed Jan. 5, 1944 ,[MW „ will-"WWW ‘5:1 12a loa / 2 \\§\\\ / INVENTOR BY' .DH/¿LIP R. WHEELER www Í Patented July 23,- 1946 f 2,404,420 UNITED e STATES » PATENT 2,404,420 OFFICE y BEARING ASSEMBLY Phillip R. Wheeler, Alexandria, Va. Application January 5, 1944, Serial No. 517,050 2 Claims. (C1. 30s-235) (Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) 1 . . This invention relates to bearing assemblies and 4has particular relation to a raceway structure for use in bearing assemblies. l An object of the invention is to provide an improved sheet'metal raceway structure for use in bearing assemblies. Another object of the invention is to provide an improved sheet metal raceway structure for vuse in bearing assemblies supporting radial loads in opposite directions and thrust loads in oppo site directions. >A further object of the invention 1s to pro vide an improved sheet metal raceway structure of economical manufacture which is of sturdy„` rigid construction and which is extremely light lin Weight with relation to the heavy load which it is capable of supporting. 2 . ofthe sections I3 and I4. The opposing sides I6 and I9 are positioned parallel to eachother and »perpendicular to the opposing sides I'I and I8, which are likewise positioned parallel to each other, thereby forming a raceway of rectangular cross-section. The sides IS, I‘I, I8 and I9, as shown, are of approximately equal width, ‘so that the raceway is substantially square-shaped in cross-section. ’ " ' ' Anti-friction rollers, one of which is shown at 20,l are disposed in the raceway with their axes parallel tothe sides I6 and I9, the rollsbeing retained in position by a roller separator 2| which is Irasek, described SerialinNo.a 510,908, copending filedapplication November of 19, 1943, now Patent 2,349,824, issued May 30, 1944. .The roller 20 is adapted to support the -down thrust when a load is` applied to the section I3. A plu rality of rollers, not shown, are disposed in the A still further object of the invention is to pro vide> a bearing assembly which is particularly adapted to be protected from damage caused by 20 raceway with their axes parallel to the sides I1 and I8 for taking up the thrust when a load vis foreign objects, rain and water, and which is applied `to the section I4. Thus, a bearing assem constructed to permit rapid and continuous drain bly is provided which is capable of supporting ra age of the race. ' 1 dial loads in both directions and thrust loads in These-arid other objects of the invention will > be understood from the following description with 25 both directions. A shielding apron 22, in the form of an L reference to the accompanying drawing, in which: shaped strip of sheet metal, is secured to the up» „ Fig. 1 is a sectional perspective view of a bear-A per flange |32) *ofV the section I3 by a bolt 23 ing assembly having one form of the new race and nut 23a and is welded to an additional pro way, and . tective and supporting shield 24 disposed 'out Fig. 2 is a horizontal sectional View on the line Wardly of and surrounding the bearing assem 2_2 of Fig. 1. bly. In the structure as shown, the radial and The invention is illustrated in preferred form thrust loads are applied to the sections I3 and suitable for use in a ring mount for a machine I4 through the shield 24 and the apron 22. How gun installation. The outer race ring comprises a strip of sheet metal which is generally 3-shaped 35 ever, it will be understood that the loads may be applied at any desired point of the bearing Vas in cross-section with its vertical portion bent to sembly. form a longitudinally extending, substantially V The invention Vhas particular use in a ring shaped race-forming channel. The bottom ilange mount for, machine gun installations,.’where I0a is secured to a base I I by a stud bolt I2 and nut I2a. The inner race ring is formed of sheet 40 sturdlness and light weight are of prime impor tance, and in which the ring mounts must be metal and comprises a U-shaped upper section constructed to withstand exposure to ordnance |3- and a U-shaped lower section I4, joined at missiles, rain and water spray. In this connec their inner adjacent ilanges I3a and I4a by a tion, it is desired to point out that the new bolt I5 and nut I5a. In the form as shown, the bearing assembly is particularly adapted to this sections I3 and I4 are identical in shape and are purpose. The apron 22 and the shield 24 pro fashioned in the same die, thereby contributing tect the bearing assembly from being struck by to the economical manufacture of the bearing foreign objects, such as ordnance missiles. The assembly. The inner adjacent corners of the apron 22 further serves to protect the bearing as sections I3 and I4 are bent to provide a sub stantially V-shaped race-forming channel which 50 sembly from exposure to rain and, when installed aboard ship, from exposure to wash water and is complementary to the channel in the V-shaped water spray. The bearing assembly is so con portion of the element I0. Thus, a channel or structed that Water can enter the raceway from raceway is provided which is defined by surfaces the outer ring only by being forced'laterally I6 and I'I of the V-shaped portion of the ele ment I0 and by the flattened corners I9 and I8 55 through the space between the base plate ñange 3 2,404,420 I0a and the shield 24, then upwardly between the outer race ring I0 and the vertical iiange of apron 22, then passing inwardly and laterally be tween the outwardly extending flange IUb and . 4 ~ bearing assembly, such as in aircraft lgun turrets. The invention herein described may be man ufacturedjand used by yor for the Government of the United `States of America for governmental purposegwithout'the payment of any royalties the apron 22. Water can enter the raceway from the inner ring only by being forced laterally and outwardly through the space between the base . thereon or therefor. l Iclaim: l Y - II and the lower flange I4b of the inner race 1. A bearing assembly comprising a self-con ring I4 and then passing upwardly between the tained raceway structure having a plurality of outer race ring I0 and the inner race ring I4. 10 channel members of substantially uniform thick-V In this connection, the novel structure of the ness, one of said members of 3-shaped cross bearing assembly permits rapid and continuous section having a V-shaped race and adjacent drainage, since the water washed into the race- strengthening flanges, and at least one of said members of» E-shaped cross-section comprising at way is immediately drained therefromby passing through the space between the lower portion of the outer race ring IIJ and the lower inner racel least two separable and interchangeable elements of substantially U-shaped cross-section forming ring I4. Y _ Y _. a complementary V-shaped race with adjacent While the invention has been described for strengthening ñanges, Said elements being cou use in a circular bearing supporting'anti-friction 1pled adjacent the vertex of this V-shaped race', rollers for takingY radial loads in both direc 20 releasable coupling means for said elements to tions and thrust loads in both directions, it will permit easy disassembly thereof, said channel be understood that use of the invention is not Amembers being positioned with 'the V-shaped limited to this >application and vthat it may be races aligned in opposed vrelation to form a race used to advantage in other bearing assemblies, way of substantially rectangular cross-section, such as those types having a straight race track 25 and anti-friction means disposed in said rectan or those employing anti-friction ball rolls. gular raceway whereby the bearing assembly will While the bearing races of the present inven freely support loads in any direction. ì tion have been described as formed from rolled 2. A bearing assembly comprisinga self-con sheet metal which may be either steel or any suit tained raceway structure having a plurality of able nonferrous material such as aluminum, mag channel members of substantially uniform thick nesium or copper base alloys, it will be apparent „ ness, one of said members of .t3-shaped cross that the races may be formed by extrusion and section having a V-shaped race and adjacent the term sheet metal is intended to include ex strengthening flanges, and at least one of said truded sections which may be of variable'thick members of E-shapedA cross-section :comprising ness. The extrusion process is advantageous at least two separable andinterchangeable ele ments of substantially U-shaped cross-section when using light alloys which must be refriger ated after being subjected to certain types of forming such as rolling. `The extrusion method has the further >advantage of providing greater flexibility in the shape and locationof that part forming a complementary V-shaped >race -¿with adjacent strengthening flanges, said elements be 40 of the raceway which attaches to either the fixed or the rotating structure, such as is present in ing coupled at the vertex of thisl Vv-shaped race, releasable coupling Vmeans for said element to permit easy Vdisassembly thereof, said channel members being positioned with the V -shaped races a gun turret. This is desirable where a replace aligned in opposed relation to form a raceway ment bearing must be adapted to lit into an of substantially rectangular cross-section, anti existing space and be assembled with an exist 4.a friction means disposed in said rectangular race-> ing structure. It has been found that the above way, and a shielding apron attached toV one of described extruded sections are adaptable 4for use said channel members, and extending-over and Where a maximum -load-carrying capacity and a minimum of weight are desired of the present alongside of the other channel member. 50 PHILLIP R. WHEELER.