傾斜微細孔加工方法 - Yanagisawa Giken Co., Ltd.

Title:

傾斜微細孔加工方法

Document Type and Number:

Japanese Patent JP4126081

Kind Code:

B1

Abstract:

Intended is to enable an inclined small hole working method for forming a small hole inclined at a predetermined angle in a work made of a relatively hard material, to achieve the shaping precision and the positioning precision of the small hole at high levels while making the small hole deeper at a higher inclination angle. The inclined small hole working method forms the small hole by feeding the drill at a predetermined feeding pitch such that a drill rotating axis is aligned with a cut-scheduled line (X) inclined at a predetermined angle with respect to the line normal to the surface of a work (1). A guide hole (10a) having an internal diameter of substantially the same size as that of a drill diameter (d) and holding the drill tip portion to regulate the play of the rotating axis in the centrifugal direction is so formed by cutting it in a substantially cylindrical shape from the surface of the work (1) by means of an end mill (2) that the center axis may be aligned with the cut-scheduled line (X). Next, the drill cutting step is started by inserting the tip portion of a drill (30a) into the guide hole (10a). At the approaching step of the boring operation, the drill cutting position/direction is guided into alignment with the cut-scheduled line (X) by the guide hole (10a).

Inventors:

Koji Yanagisawa
Yasuhiro Saito
Takagi Yanagisawa
Kanuma Masatoshi
Kiyoshi Fujikura

Application Number:

JP2007212512A

Publication Date:

July 30, 2008

Filing Date:

August 17, 2007

Export Citation:

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