AS B66-1969
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Worm gearing (inch series)
Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users
30-06-2017
English
01-01-1969
Provides geometrical and other design data and formulae for worms and worm-wheels with thread forms, and applies both to cylindrical involute helicoid and cylindrical milled helicoid threads. Four classes of gears A, B, C, D are provided, relating to function and precision. Modules range from 0.052 to 1, gear ratios range up to 100:1, and rational series of centre distances and diameter quotients are listed. Typical drawings show information to be given when ordering and appendices cover determination of load capacity, design calculations for typical gears, design procedure based on axial pitch of the worm, and design of worms to suit standard diametral pitch cutting tools corresponding to the normal pitch of the worm.
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