Pot broach
AssigneeNational Broach & Machine Company
InventorsAxel B. Abrahamsson, Eugene J. Bistrick, Harvey J. Yera, Margaret Wieczorek
Life of this patent
Estimating the term…
Abstract
A tooth broach designed for use with thin workpieces having its teeth arranged in circumferentially extending sets in each of which the teeth are arranged in groups of one or more teeth, and gaps devoid of teeth between adjacent groups. The teeth are further arranged in longitudinally extending series, in which consecutive teeth in each series are separated by gaps in the adjacent sets. This provides for reduced axial spacing between axially adjacent sets of teeth to maintain cutting action at all times with a thin workpiece.
Claims9
A broach having a multiplicity of cutting teeth arranged longitudinally extending series and in circumferentially extending sets, the teeth in each series being of increasing height from end to end to cut tooth spaces progressively deeper as a gear blank passes axially across said broach, the teeth in each set being arranged in circumferentially spaced groups of one or more teeth, the space between adjacent groups of teeth in each set being devoid of teeth, each group of teeth in one set being in longitudinal alignment with a space of at least equal circumferential extent in each of the next adjacent circumferentially extending sets of teeth.
A broach having a multiplicity of cutting teeth arranged in longitudinally extending series and in circumferentially extending sets, the teeth in each set being arranged in circumferentially spaced groups of one or more teeth, the space between adjacent groups of teeth in each set being devoid of teeth, each group of teeth in one set being in longitudinal alignment with a space of at least equal circumferential extent in each of the next adjacent circumferentially extending sets of teeth.
Dependencies are inferred from the claim text.