Metal deforming – With use of control means energized in response to activator... – Sensing tool or tool-linked part
Reexamination Certificate
2006-05-02
2006-05-02
Jones, David (Department: 3725)
Metal deforming
With use of control means energized in response to activator...
Sensing tool or tool-linked part
C072S021400, C072S031100, C072S031110, C072S389400, C072S389600, C100S257000, 36
Reexamination Certificate
active
07036345
ABSTRACT:
A vertical position of a ram is directly detected by a ram position detector. A first speed arithmetic operating portion determines a first ram moving speed on the basis of a change of the detected position. A second speed arithmetic operating portion determines a second ram moving speed on the basis of a rotational number of a servo motor which is determined by a servo motor rotational number detector. A comparing portion compares the first ram speed with the second ram speed, and when a difference is equal to or more than a predetermined amount, a judging portion judges that an abnormality exists so as to immediately stop the servo motor and stop an operation.
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Kanno Kazuhiro
Satou Masutaka
Amada Company Limited
Jones David
LandOfFree
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