Title:
BROACHING TOOL
Document Type and Number:
WIPO Patent Application WO/2018/180118
Kind Code:
A1
Abstract:
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; and a shaft disposed along the central axis. 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 direction for each processing blade part, and are each arranged in parallel along the teeth section and the axial direction of different processing blade parts. Each of the processing blade parts has a first through hole passing through the processing blade part in the axial direction thereof. The plurality of processing blade parts are separate members from each other, and are connected by the shaft passing through the first through holes. The present invention is further provided with a rotation prevention part which prevents relative rotation between the processing blade parts.
Inventors:
WATANABE MASARU (JP)
TAMAKI KOJI (JP)
FURUKAWA TOMOHIRO (JP)
TAMAKI KOJI (JP)
FURUKAWA TOMOHIRO (JP)
Application Number:
PCT/JP2018/007154
Publication Date:
October 04, 2018
Filing Date:
February 27, 2018
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
B23D43/02; B23F21/26
Foreign References:
| JPS62228329A | 1987-10-07 | |||
| JP2010233291A | 2010-10-14 | |||
| JP2009201258A | 2009-09-03 | |||
| US4985609A | 1991-01-15 | |||
| GB1365819A | 1974-09-04 | |||
| EP0013189A1 | 1980-07-09 | |||
| JP2012101487A | 2012-05-31 |
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