Abstract
On-site machining is a specific domain where damaging vibrations can be generated by the dynamic interaction between the tool and the workpiece. These vibrations are often the cause of the degradation of the machined part and the cutting tool. It is necessary to suppress and/or control this phenomenon. We have therefore developed in this paper our experimental investigation of the on-site machining dynamic behaviour through the acoustic field. The experimental results show the trends adopted by the main frequency peaks with numerous experimental conditions while on-site machining. This first approach is part of a larger goal, which is the in-situ detection of on-site machining defects through Acoustic.
Highlights
In today’s industrial world, corrective and preventative maintenance play a key role by limiting the production losses
This paper presents the design of a test bench for the acoustic measurements of a portable milling machine dynamic behaviour used for on-site machining
The wide range of experimental conditions allowed us to study the influence of feed rate, cutting speed and depth of cut on these frequencies
Summary
In today’s industrial world, corrective and preventative maintenance play a key role by limiting the production losses This is even more so if industrialists do not have the possibility to move their defective equipment to rehabilitate it. Due to the lightness of these portable machines, important defaults could appear such as chatter [1,2,3], machine failure [4] or occurrences of abnormal machining conditions [5,6,7]. To study those defaults, we focus on the sound produced while machining and especially with the on-site machining, which is a key source of information. Microphones are very suitable for chatter and default detection in milling, as their sensitivity to the onset of chatter is comparable to that of expensive sensors such as plate dynamometers, displacement probes and accelerometers
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