Screw and relieved surfaces with a profile of substantial and variable curvature are often used in machine parts and cutting tools.Among them,a special place is occupied by worm hobs for cutting the teeth of Wildhaber-Novikov gears with the profile of the generating worm,variable not only in radius,but also in sign of curvature.A technique for forming the tooth flanks of these hobs by a disk grinding wheel is developed,which allows the grinding and ground profiles m the axial section of the generating worm to be brought together as close as possible.The method for calculating the settings-up and profile coordinates of the grinding wheel is given for its performance in real production conditions.
展开▼
