The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2025
Filed:
Mar. 31, 2020
Makino Milling Machine Co., Ltd., Tokyo, JP;
Junichi Maeda, Kanagawa, JP;
MAKINO MILLING MACHINE CO., LTD., Tokyo, JP;
Abstract
The tap tool () has an axis of rotation (Cr) and machines a pilot hole (') so that the same becomes a screw hole () in a state where the axis of rotation has been matched to a central axis (C) of the pilot hole which is provided to a workpiece, wherein the tap tool () is characterized by being provided with: a thread section () having a blade section () for machining a thread groove of the screw hole; pad sections () located behind in a direction of rotation of the blade section, and engaging with the thread groove machined by the blade section during the machining of the thread groove; and a non-engagement section () for forming a space () between said section and the screw hole in a cross-sectional view where the axis of rotation and the central axis of the screw hole have been matched. The space has a size that enables simultaneous release of the engagement between the thread section and the thread groove and the engagement of the pad sections and the thread groove, in a case where the tap tool has shifted in a direction orthogonal to the axis of rotation within the screw hole, such shift being from the state where the axis of rotation and the central axis of the screw hole have been matched.