Control of Gear Backlash
Original Publication Date: 1988-Dec-01
Included in the Prior Art Database: 2005-Feb-15
Pitch rings are used to automatically provide the desired backlash between mating ring gears. This arrangement is of particular utility in the case of a "blind" construction and arrangement where the gears are not readily visible or available for backlash adjustment. (Image Omitted) Fig. 1 shows the end view of a power train where a motor-driven ring gear 10 mates with and drives two ring gears 11 and 12. Fig. 2 is an end view of one of these metal gears, for example, gear 10 (all three gears are of this same construction and arrangement). A metal pitch ring 13 (called by this name because the diameter of ring 13 is only from 0.002 to 0.003 inch larger than the pitch diameter of gear 10) is either fixed to the same shaft as gear 10, or, alternatively, ring 13 may be formed of a single piece of metal with gear 10.