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|1. (WO2018180119) BROACHING TOOL|
An aspect of this broaching tool is provided with a plurality of processing blade parts aligned along a central axis extending in the vertical direction. Each of the processing blade parts has a plurality of teeth sections protruding outward in a radial direction. The plurality of teeth sections are arranged in parallel in the peripheral directions thereof for each processing blade part. The teeth sections of the processing blade parts neighboring each other in the axial direction thereof are disposed such that the teeth sections in one processing blade part are disposed between teeth sections which, in the other processing blade, neighbor each other in the peripheral direction when viewed in the axial direction. In each of the processing blade parts, The teeth sections of each of the processing blade parts overlap in the axial direction with the teeth sections of at least one of the non-neighboring processing blade parts.