CNC machine tool monitoring by AE sensors: Difference between revisions

Revision as of 16:01, 23 September 2015

Revision as of 00:01, 16 February 2016

Line 10:

== Techniques of Machine tool Monitoring ==

Machine Tool monitoring can be done with or without additional sensors.

Machine Tool monitoring is done either with or without additional sensors. Machine Tool monitoring, using sensors is mainly based on the cutting force measurement components using a multi-channel table dynamometer or rotating dynamometer, vibration amplitude using multi-channel accelerometers, audible sound from the machining process, and high-frequency sound or acoustic emission, AE. A Sensor less machine tool monitoring are mainly based on measuring of internal drive signals, such as the feed motor current, spindle motor current and spindle power. Combined measuring of multiple quantities is also possible.<ref>{{cite book|last1=REPO|first1=JARI|title=Thesis on Condition Monitoring of Machine [[Tools]] and Machining Processes using Internal Sensor Signals|date=2010|___location=Stockholm,Sweden}}</ref>

Using additional sensors, monitoring can be done by measuring:

* the cutting force (with a multi-channel table dynamometer or rotating dynamometer)

* vibration amplitude using multi-channel accelerometers

* audible sound from the machining process

* high-frequency sound or acoustic emission

Sensor-less machine tool monitoring is done by measuring internal drive signals such as:

* feed motor current

* spindle motor current

* spindle power

Combined measuring of multiple quantities is also possible.<ref>{{cite book|last1=REPO|first1=JARI|title=Thesis on Condition Monitoring of Machine [[Tools]] and Machining Processes using Internal Sensor Signals|date=2010|___location=Stockholm,Sweden}}</ref>

== Acoustic emission sensor ==