BORING CONTROL METHOD

Title:

BORING CONTROL METHOD

Document Type and Number:

WIPO Patent Application WO/2003/101651

Kind Code:

A1

Abstract:

A boring control method for a machine tool for automatically boring a deep hole using central control means performing boring with programmed control. In the boring, the number of processing and steps of the machine tool is kept minimum, load torque of a tool is detected continuously using torque detection means, and the movement of the tip portion of the tool desired for a piece of work is confirmed from a reference point to a hole bottom using a Z-axis movement device. The boring is continued in each step until the load torque exceeds a predetermined torque limit value, performed in a condition where a main shaft rotation number, or rotation speed of the tool, and feed speed form a specific pattern, and a condition is set where a total step number (f) does not exceed a predetermined limit step number (N).

Inventors:

MAKIYAMA TADASHI (JP)
KUROKAWA HIROYUKI (JP)
AMAKO TOSHIHIKO (JP)

Application Number:

PCT/JP2003/006427

Publication Date:

December 11, 2003

Filing Date:

May 22, 2003

Export Citation:

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Assignee:

HORKOS CORP (JP)
MAKIYAMA TADASHI (JP)
KUROKAWA HIROYUKI (JP)
AMAKO TOSHIHIKO (JP)

International Classes:

B23B35/00; B23Q15/12; B23B47/18; B23Q15/08; B23Q17/09; G05B19/4155; (IPC1-7): B23B47/18

Foreign References:

JPH06155246A	1994-06-03
JPH03281113A	1991-12-11
JPS62246408A	1987-10-27
JPH03190612A	1991-08-20

Other References: