Title:
HOLE MACHINING METHOD, CONTROL DEVICE, AND MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2023/067987
Kind Code:
A1
Abstract:
Provided is a hole machining method using a tap tool (10) that rotates around a rotation axis (Cr) and comprises: a thread part (14) having a blade part (14a) for machining a thread groove in a pilot hole (6'); and a non-engagement part (17) that forms a space (20) between the pilot hole (6') and the non-engagement part (17) in a cross-sectional view in which the rotation axis (Cr) and a central axis (C6) of the pilot hole (6') are aligned. The hole machining method comprises: rotating the tap tool (10) to advance the tap tool (10) toward a workpiece (8) and to machine a thread groove in a first state in which the central axis (C6) and the rotation axis (Cr) are aligned; rotating the tap tool (10) around the rotation axis (Cr) to move the tap tool (10) toward the non-engagement part (17) in a direction orthogonal to the rotation axis (Cr) in the pilot hole (6'), thereby changing from the first state to a second state in which the thread part (14) and the thread groove are disengaged; and retracting the tap tool (10) from a tapped hole (6).
Inventors:
MAEDA JUNICHI (JP)
KATO HIROKI (JP)
KATO HIROKI (JP)
Application Number:
PCT/JP2022/035671
Publication Date:
April 27, 2023
Filing Date:
September 26, 2022
Export Citation:
Assignee:
MAKINO MILLING MACHINE (JP)
International Classes:
B23G3/02; B23G1/16; B23G5/06
Foreign References:
| JPS62271628A | 1987-11-25 | |||
| JP6742468B1 | 2020-08-19 | |||
| DE102005022503A1 | 2006-03-30 | |||
| JPH10502581A | 1998-03-10 | |||
| JP2021520302A | 2021-08-19 | |||
| JPS60150901A | 1985-08-08 | |||
| DE102016123316A1 | 2018-06-07 | |||
| JP6742468B1 | 2020-08-19 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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