Intermittent milling vibration subsection control method
A segmented control and milling technology, applied in the direction of digital control, program control, electrical program control, etc., can solve the problems of difficult use of the controller, conservative control parameters, excessive controller gain requirements, etc., and achieve high stability discrimination accuracy. , the effect of small controller gain
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[0010] The present invention will be further described below in conjunction with specific drawings and embodiments.
[0011] A segmented control method for intermittent milling vibration proposed in an embodiment of the present invention, including:
[0012] Step 1: Carry out time-delay dynamics modeling and segmental approximation for interrupted milling;
[0013] The interrupted milling process is divided into a free vibration period and a forced vibration period according to the contact state between the tool and the workpiece. The free vibration period is naturally stable, while the forced vibration period may be unstable; the two states are modeled separately, and the The linear approximation of the cutting force orientation coefficient in the forced vibration stage is convenient for controller design and analysis;
[0014]
[0015]
[0016] in, represents the free vibration phase, Indicates the forced vibration stage, Ω indicates the rotational speed, b indica...
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