MANUFACTURING METHOD, MACHINING DEVICE, AND DRILL

Title:

MANUFACTURING METHOD, MACHINING DEVICE, AND DRILL

Document Type and Number:

WIPO Patent Application WO/2015/145928

Kind Code:

A1

Abstract:

This machining device is equipped with a machining unit for driving a cutting tool to rotate and a moving unit capable of moving the machining unit in the axial direction of the cutting tool. The cutting tool is equipped with a first drill for forming a first hole and a second drill for forming a second hole that is larger than the first hole. The second drill is coaxially disposed around the first drill, and the first drill and the second drill are enabled to slide in the axial direction so as to change the relative positions thereof. The machining unit is equipped with a relative movement mechanism for changing the relative positions of the first drill and the second drill in the axial direction.

Inventors:

HIRASAWA YOICHI (JP)

Application Number:

PCT/JP2015/000346

Publication Date:

October 01, 2015

Filing Date:

January 27, 2015

Export Citation:

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Assignee:

HIRATA SPINNING (JP)

International Classes:

B23B35/00; B23B51/00

Foreign References:

JP2004337997A	2004-12-02
US5775853A	1998-07-07
JPH068605U	1994-02-04
US20100183387A1	2010-07-22