FIELD: mechanical engineering; automobile manufacture; machine-tool industry; reduction gear manufacture; tractor manufacture; crane manufacture; aircraft manufacture; manufacture of power involute gear trains. SUBSTANCE: involute gear train includes gear and wheel with shorter teeth profiled by spinning in the course of machining in metal-cutting machine-tools. Contours of tooth-cutting tools are selected from respective formulae. EFFECT: improved shape of teeth; reduced dimensions and usage of metal. 3 dwg
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