SHAPING OF GRINDING WORM FOR MACHINING A CYLINDRICAL INVOLUTE HELICAL GEAR

摘要

The process of involute helical gear grinding is considered. Worm dressing is usually carried out by means of two diamond cones and diamond disk with formed active surface. For each gear module special disk is required. In the paper a process of worm shaping by two cones only is examined. Algorithm and computer code for determination of machine-tool settings for worm dressing and gear grinding as well as for construction of worm thread and gear tooth surfaces are developed. It is shown that for manufacturing of gears with normal profile angle 20° the set of diamond disks of profile angles 21°, 22°, 23°, 24°, 25°, 26° is sufficient.