Spur and bevel gearing; a treatise on the principles, dimensions, calculation, design and strength of spur and bevel gearing, together with chapters on special tooth forms and methods of cutting gear teeth (1914)
New York, The Industrial press; [etc., etc.] · leaf 175
the addendum 8 8 number of the pitch designation. The shape of the rack or hob tooth to roll with the gears pro-duced by the gear shaper should be generated from the cutterused. The Fellows cutters have perfect involutes above thebase line, with radial flanks, so that the hob tooth would bestraight… … I■5-+0.15 P ^^^ -^ + 0.15P Machinery Fig. 18. Hob Tooth for generating a 20-degree Involute Milled Tooth hob tooth would be straight-sided to the point. In this systemthe radial flank of cutters with more than seventeen teeth doesnot aftect the shape of the face of the tooth, as the involute…
Gearing
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