| 摘要 |
1,140,782. Toothed gearing; coupling rotary elements. BENDIX CORP. 16 Jan., 1967 [27 Jan., 1966], No. 2216/67. Headings F2Q and F2U. [Also in Division B3] o eliminate backlash between intermeshed gears 32, 34 for synchronizing the rotation of two spaced apart parallel rotatable members 22, 24, e.g. the arbors of a metal cutting machine, each gear comprises a portion 60 having a ring of teeth 72 and a hub 64 keyed to a respective arbor, and a portion 62 coaxially mounted on the hub 64 and having a ring of teeth 74 corresponding to the teeth 72 to form therewith a set of two-part gear teeth, the portions 62 being angularly adjustable relative to the portions 60 to vary the effective thickness of the twopart teeth. The teeth 72 of one gear mesh the teeth 74 of the other, and vice versa. Portions 78, 80 of diametrically opposite flats on the hubs 66 of portions 62 are separated by ribs 82 in which are threaded adjustment screws 84 which abut blocks 88 bolted to the portions 60. Angular adjustment is by loosening one screw 84 and tightening the other. If the arbors 22, 24 are moved apart, half the resultant backlash is taken up by adjustment of each gear, to maintain synchronization of the arbors. |
