Method for setting feed rate of rotating cutting tool in real time and control device

A method performed by a device, implemented by a computer including electrical integrated circuits, for setting a feed rate of a rotating cutting tool in real time, the method comprising:

• receiving a manual material removal rate (MMS) provided from a tool manufacturing company;
• virtually correcting, in response to the received manual material removal rate (MMS), a current feed rate of the rotating cutting tool and calculating a corrected material removal rate (MMS-1) according to the correction;
• performing, implemented by the electrical integrated circuit, a signal processing for comparing a largeness and smallness relation between the manual material removal rate (MMS) and the corrected material removal rate (MMS-1), and determining whether to apply the virtually set feed rate of the rotating cutting tool;
• and
• setting, implemented by the electrical integrated circuit, the feed rate of the rotating cutting tool in real time by controlling the rotating cutting tool to adjust the feed rate of the rotating cutting tool to be increased when the corrected material removal rate (MMS-1) is determined to be smaller than the manual material removal rate (MMS).

A method performed by a device for setting a feed rate of a rotating cutting tool in real time, the method comprising:

• receiving a manual material removal rate (MMS) provided from a tool manufacturing company;
• sensing, by one or more sensors including electrical circuits and installed in a machine tool, vibration of a shaft mounted in the machine tool to collect vibration data by generating vibration information based on the sensed vibration of the shaft;
• deducing a chatter vibration trend diagram (G), wherein the chatter vibration diagram (G) is deduced by
• sensing a variation amplitude of the chatter vibration in size and width over a time frame based on the collected vibration data,
• determining whether an inclination of the chatter vibration is increased or decreased during the predetermined period of the time frame based on the sensed variation amplitude of the chatter vibration in size and width, and
• simplifying (i) the chatter vibration to be a first type diagram of the chatter vibration trend diagram (G) when the inclination of the chatter vibration is determined to be increased during the predetermined period of the time frame, and (ii) the chatter vibration to be a second type diagram of the chatter vibration trend diagram (G) when the inclination of the chatter vibration is determined to be decreased during the predetermined period of the time frame;
• correcting, in response to the received manual material removal rate (MMS), a current feed rate of the rotating cutting tool to be virtually increased when the chatter vibration trend diagram (G) is determined to be the second type diagram, and calculating a corrected material removal rate (MMS-1) according to the correction;
• performing a signal processing for comparing a largeness and smallness relation between the manual material removal rate (MMS) and the corrected material removal rate (MMS-1), and determining whether to apply the virtually set feed rate of the rotating cutting tool;
• and
• controlling the rotating cutting tool to
• adjust the feed rate of the rotating cutting tool to be increased when the corrected material removal rate (MMS-1) is smaller than the manual material removal rate (MMS), and
• adjust the feed rate of the rotating cutting tool to be decreased when the corrected material removal rate (MMS-1) is larger than the manual material removal rate (MMS).