Tool driving or impacting – Processes
Reexamination Certificate
2007-02-06
2007-02-06
Gerrity, Stephen F. (Department: 3721)
Tool driving or impacting
Processes
C173S004000, C408S011000, C408S017000
Reexamination Certificate
active
10516214
ABSTRACT:
A boring control method for a machine tool for automatically boring a deep hole using a 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).
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Amako Toshihiko
Kurokawa Hiroyuki
Makiyama Tadashi
Durand Paul
Gerrity Stephen F.
Horkos Corp.
Koda & Androlia
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