Patent GB-660330-A (GB)
Title: Improvements relating to roller bearings
Inventor: ASHTON DENNIS
IPC: F16C33/54
Filed: 1949-06-22
Abstract: 660,330. Making bearings. BRITISH TIMKEN, Ltd. Nov. 19, 1949 [June 22, 1949], No. 16526/49. Classes 83 (ii) and 83 (iv). [Also in Group XXXIV] Stamping; annular bending.-In a method of applying a cage in the form of an annulus with spaced fingers to a tapered-roller bearing having rollers disposed between inner and outer racemembers and co-operating with race surfaces and retaining flanges thereon, the cage fingers are inserted between the rollers and pressure is applied by a punch or other tool so as to deform a portion of the cage and so displace the fingers towards one of the race members and into positions where they interlock with the rollers. An assembly comprising an outer race member 1, an inner race member 3 and two rows of tapered rollers 7 therebetween is supported in a holder 13, 14, Fig. 3, the latter part being a ring with upper radial slots to receive members 12 with fingers 11. which enter between and space the rollers 7. A cage A comprising a ring 8 with axially-extending tapered fingers 10 is inserted in a ring 17 supported on the ring 14 and is forced down by a punch 19 having an annular portion 20 engaging the ring 8. As the cage is forced down, the fingers 10 enter between adjacent rollers and are bent inwards by contact with the inclined fingers 11 so that the cage assumes a conical form which is interlocked with the rollers. The assembly is then reversed and another cage inserted at the other side. The cage fingers may be formed with wing portions 10a, Fig. 9, to form roller pockets. In a modification, Fig. 11, the members 11, 12 are dispensed with. The flange 8<SP>1</SP> of the cage -is at right-angles to the fingers 10<SP>1</SP> which are inserted between the rollers and are then deformed to conical shape by the action of a punch 19<SP>1</SP> on the flange 8<SP>1</SP>. In another form, Figs. 13 and 14, the cage has an outwardly flaring flange 23 which is bent horizontally between a punch 19<SP>11</SP> and an anvil 24, the fingers 10 being thus deflected inwardly to a conical shape. The inner race member 3 may be formed with a central groove to receive the initially bent-over ends of the cage fingers or alternatively, the ends of the fingers may be bent against a central rib 5<SP>11</SP>, Fig. 17, on the member 3 and so bent up into a groove 27 in the outer race member 1. The cage may be of conical form without flanges and of a diameter such that when inserted, the cage lies against the race member 1. The outer annular portion 29 of the cage is then crimped between an inner die 30, Fig. 20, and radially moving dies 32 slidingly mounted in a ring 31 and moved inwardly by a conical wall 34 of a ring 33. The crimping is such that the fingers 10 are at the bottoms of the undulations and are thus moved inwards into close engagement with the surfaces of the rollers. The rollers may be arranged with their larger ends inwards and co-operating with a central thrust flange 35 on the member 1. The cage is of the form shown in Fig. 22 and the assembling punch is shaped so that the inner part of the flange 8<SP>11</SP> is thrust inwards, thus deflecting outwardly the fingers 10<SP>11</SP>, this action being assisted by anvil segments similar to the members 11, 12 of Fig. 3, but inclined outwardly.