| 摘要 |
PURPOSE:To form the whole part in the edge length to the effective edge length by applying feed onto a revolving workpiece and forming an outer peripheral flank up to the cutting-up part and suspending feed and increasing the cutting-in amount of a rotary grindstone according to the degree of revolution of the workpiece and grinding the cutting-up part. CONSTITUTION:In the formation method in the first process ranging from the top edge to the cutting-up part, mulitiple spindle control is performed by using an NC grinder, not using a rest, and the transfer amount in the axial direction of a workpiece W, transfer amount in the revolution direction, cutting-in amount in the raidial direction, etc. are controlled through linear interpolation. Then, in the second process, e.g., in the grinding for the cutting-up part of the workpiece, the workpiece W is revolved, in the state where feed is suspended, and at the same time, grinding work is carried-out by gradually shifting a rotary grinder 2 in the direction perpendicular to the shaft, and the cutting-in amount of the rotary grinder 2 for the workpiece W is increased according to the degree of the revolution of the workpiece W. Therefore, similarly to the flank ranging from the top edge part of the workpiece to the cutting-up part, the section can be formed to Archimedes' curve, and the cutting-up part in the form of incomplete edge part can be finished to a perfect flank. |
