TWI783691B - Tool condition monitoring system and method thereof - Google Patents

Tool condition monitoring system and method thereof Download PDF

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TWI783691B
TWI783691B TW110135003A TW110135003A TWI783691B TW I783691 B TWI783691 B TW I783691B TW 110135003 A TW110135003 A TW 110135003A TW 110135003 A TW110135003 A TW 110135003A TW I783691 B TWI783691 B TW I783691B
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frequency
tool
signal
detection signal
phase
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TW202313244A (en
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蔡汯嶧
許永和
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國立虎尾科技大學
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Abstract

The present disclosure provides a tool condition monitoring system, which include a control module and a monitoring module. The monitoring module is signally contacted with the control module and a cutting tool and includes a power amplifying unit and a signal processing unit. The power amplifying unit is for receiving a detecting signal from the control module and amplifies the detecting signal and output to the cutting tool. The signal processing unit is for receiving a feedback signal from the cutting tool and out put the feedback signal to the control module. The control module calculates a tool condition information through the feedback signal. Wherein, through the tool condition monitoring system and prediction method, the cutting tool can be detected in the no-load state and in the use state in real time, so as to avoid the damage to the instrument or product caused by the continued use of the cutting tool under the condition of excessive wear of the cutting tool, and further improve the yield rate of the product.

Description

刀具狀態監測系統及其方法Tool Condition Monitoring System and Method

本發明係關於一種刀具狀態監測系統及其方法，且特別是一種可即時偵測刀具之刀具狀態監測系統及其方法。The present invention relates to a tool state monitoring system and its method, and in particular to a tool state monitoring system capable of real-time detection of a tool and its method.

刀具是目前機械加工產業中常見的工具之一，其屬於消耗性的資源，並經過一段時間後，依照耗損的程度需進行汰換。故，刀具的管理及使用狀態的監控為機械加工產業長期以來持續改善的目標之一。Cutting tools are one of the common tools in the machining industry at present. They are consumable resources, and after a period of time, they need to be replaced according to the degree of wear and tear. Therefore, the management of cutting tools and the monitoring of their usage status are one of the goals of continuous improvement in the machining industry for a long time.

現有刀具的監測，大多是在刀具磨耗至一定程度時，透過人工目測的方式，逐一確認並進行更換，且針對不同類型的刀具並沒有設定不同的標準或壽命預測，因而耗費人力成本，且無法精確地在刀具確實需要更換的狀況下進行汰換。因此，不但容易造成加工裝置或產品的損傷、影響產品的良率，也容易產生成本上的浪費。The monitoring of existing cutting tools is mostly to confirm and replace them one by one through manual visual inspection when the cutting tools are worn to a certain extent, and there are no different standards or life predictions for different types of cutting tools, which consumes labor costs and cannot Replacing tools precisely when they do need to be replaced. Therefore, not only is it easy to cause damage to the processing device or the product, and affect the yield of the product, it is also likely to cause waste in cost.

本發明提供一種刀具狀態監測系統及其方法，透過刀具狀態監測系統及其方法可即時偵測刀具狀態，避免在刀具過度磨損之情況下繼續使用刀具造成儀器或者產品的損傷，並且可進一步提升產品之良率。The present invention provides a tool state monitoring system and its method. Through the tool state monitoring system and its method, the tool state can be detected in real time, so as to avoid damage to the instrument or product caused by the continued use of the tool when the tool is excessively worn, and can further improve the product. yield.

依據本發明一實施方式提供一種刀具狀態監測系統，其包含一控制模組以及一監測模組。監測模組訊號連接控制模組以及一刀具並包含一功率放大單元以及一訊號處理單元。功率放大單元用以接收來自控制模組的一偵測訊號，並將偵測訊號放大後輸出至刀具。訊號處理單元用以接收自刀具的一反饋訊號，並將反饋訊號輸出至控制模組。控制模組透過反饋訊號計算出一刀具狀態資訊。According to an embodiment of the present invention, a tool state monitoring system is provided, which includes a control module and a monitoring module. The signal of the monitoring module is connected with the control module and a tool and includes a power amplification unit and a signal processing unit. The power amplifying unit is used for receiving a detection signal from the control module, amplifying the detection signal and outputting it to the cutter. The signal processing unit is used for receiving a feedback signal from the tool and outputting the feedback signal to the control module. The control module calculates a tool state information through the feedback signal.

依據前述實施方式的刀具狀態監測系統，其中控制模組可包含一模態偵測訊號單元以及一計算單元。模態偵測訊號單元用以設定偵測訊號之一參數，其中參數包含一定值電壓及一調變頻率，且調變頻率可依照反饋訊號調整。計算單元用以收反饋訊號並計算出刀具狀態資訊，其中刀具狀態資訊為一參考共振頻率。According to the tool state monitoring system of the aforementioned embodiment, the control module may include a mode detection signal unit and a calculation unit. The mode detection signal unit is used to set a parameter of the detection signal, wherein the parameter includes a certain value voltage and a modulation frequency, and the modulation frequency can be adjusted according to the feedback signal. The calculation unit is used for receiving feedback signals and calculating tool state information, wherein the tool state information is a reference resonance frequency.

依據前述實施方式的刀具狀態監測系統，其中控制模組可更包含一鎖頻偵測訊號單元、一鎖頻計算單元以及一鎖頻警示單元。鎖頻偵測訊號單元用以於刀具在一空負載狀態時設定偵測訊號之一鎖頻參數，其中鎖頻參數包含定值電壓及一鎖頻頻率，且鎖頻頻率依照參考共振頻率設定。鎖頻計算單元用以接收反饋訊號並計算出刀具狀態資訊，其中刀具狀態資訊為一共振頻率。鎖頻警示單元用以比對共振頻率與參考共振頻率，並於共振頻率大於參考共振頻率時發出一警示訊號。According to the tool state monitoring system of the aforementioned embodiment, the control module may further include a frequency lock detection signal unit, a frequency lock calculation unit, and a frequency lock warning unit. The frequency-locking detection signal unit is used to set a frequency-locking parameter of the detection signal when the tool is in an empty state, wherein the frequency-locking parameter includes a fixed value voltage and a frequency-locking frequency, and the frequency-locking frequency is set according to the reference resonance frequency. The frequency-locking calculation unit is used for receiving the feedback signal and calculating the tool status information, wherein the tool status information is a resonance frequency. The frequency locking warning unit is used for comparing the resonant frequency with the reference resonant frequency, and sends out a warning signal when the resonant frequency is higher than the reference resonant frequency.

依據前述實施方式的刀具狀態監測系統，其中控制模組可更包含一鎖相偵測訊號單元、一鎖相計算單元以及一鎖相警示單元。鎖相偵測訊號單元用以於刀具在一使用狀態時設定偵測訊號之一鎖相參數，其中鎖相參數包含定值電壓及一鎖相頻率，且鎖相頻率依照參考共振頻率設定。鎖相計算單元用以接收反饋訊號並計算出刀具狀態資訊，其中刀具狀態資訊為一共振頻率。鎖相警示單元用以比對共振頻率與參考共振頻率，並於共振頻率大於參考共振頻率時發出一警示訊號。According to the tool state monitoring system of the aforementioned embodiment, the control module may further include a phase lock detection signal unit, a phase lock calculation unit, and a phase lock warning unit. The phase-locking detection signal unit is used to set a phase-locking parameter of the detection signal when the tool is in use, wherein the phase-locking parameter includes a fixed value voltage and a phase-locking frequency, and the phase-locking frequency is set according to the reference resonance frequency. The phase-lock calculation unit is used to receive the feedback signal and calculate the tool state information, wherein the tool state information is a resonance frequency. The phase-locked warning unit is used for comparing the resonant frequency with the reference resonant frequency, and sends out a warning signal when the resonant frequency is higher than the reference resonant frequency.

依據前述實施方式的刀具狀態監測系統，其可更包含一外部資料庫，其以一物聯網方式與控制模組連接，將刀具狀態資訊儲存於外部資料庫。According to the tool state monitoring system of the aforementioned embodiment, it may further include an external database, which is connected with the control module in an Internet of Things manner, and stores the tool state information in the external database.

依據本發明一實施方式提供一種刀具狀態監測方法，其包含一訊號輸出步驟、一訊號處理步驟以及一訊號計算步驟。訊號輸出步驟將一偵測訊號輸出至一刀具。訊號處理步驟係自刀具接收一反饋訊號。訊號計算步驟係透過反饋訊號計算出一刀具狀態資訊。According to one embodiment of the present invention, a tool state monitoring method is provided, which includes a signal output step, a signal processing step, and a signal calculation step. The signal outputting step outputs a detection signal to a tool. The signal processing step is to receive a feedback signal from the tool. The signal calculation step is to calculate a tool state information through the feedback signal.

依據前述實施方式的刀具狀態監測方法，其中訊號輸出步驟可包含一模態偵測訊號輸出步驟，設定偵測訊號之一參數，其中參數包含一定值電壓及一調變頻率，且調變頻率可依照反饋訊號調整。其中，訊號計算步驟透過反饋訊號計算出一刀具狀態資訊，其中刀具狀態資訊為一參考共振頻率。According to the tool state monitoring method of the aforementioned embodiment, wherein the signal output step may include a modal detection signal output step, setting a parameter of the detection signal, wherein the parameter includes a certain value voltage and a modulation frequency, and the modulation frequency can be Adjust according to the feedback signal. Wherein, the signal calculation step calculates a tool status information through the feedback signal, wherein the tool status information is a reference resonance frequency.

依據前述實施方式的刀具狀態監測方法，其中訊號輸出步驟可更包含一鎖頻偵測訊號輸出步驟，於刀具在一空負載狀態時設定偵測訊號之一鎖頻參數，其中鎖頻參數包含定值電壓及一鎖頻頻率，且鎖頻頻率依照參考共振頻率設定。其中，訊號計算步驟透過反饋訊號計算出一刀具狀態資訊，其中刀具狀態資訊為一共振頻率。According to the tool state monitoring method of the aforementioned embodiment, the signal output step may further include a frequency lock detection signal output step, and a frequency lock parameter of the detection signal is set when the tool is in an empty state, wherein the frequency lock parameter includes a fixed value voltage and a frequency locking frequency, and the frequency locking frequency is set according to the reference resonance frequency. Wherein, the signal calculating step calculates a tool status information through the feedback signal, wherein the tool status information is a resonance frequency.

依據前述實施方式的刀具狀態監測方法，其中訊號輸出步驟可更包含一鎖相偵測訊號輸出步驟，於刀具在一使用狀態時設定偵測訊號之一鎖相參數，其中鎖相參數包含定值電壓及一鎖相頻率，且鎖相頻率依照參考共振頻率設定。其中，訊號計算步驟透過反饋訊號計算出一刀具狀態資訊，其中刀具狀態資訊為一共振頻率。According to the tool state monitoring method of the aforementioned embodiment, the signal output step may further include a phase-lock detection signal output step, and a phase-lock parameter of the detection signal is set when the tool is in a use state, wherein the phase-lock parameter includes a fixed value voltage and a phase-locking frequency, and the phase-locking frequency is set according to the reference resonance frequency. Wherein, the signal calculating step calculates a tool status information through the feedback signal, wherein the tool status information is a resonance frequency.

依據前述實施方式的刀具狀態監測方法，其可更包含一警示步驟，其中警示步驟比對共振頻率與參考共振頻率，並於共振頻率大於參考共振頻率時發出一警示訊號。According to the tool state monitoring method of the aforementioned embodiment, it may further include a warning step, wherein the warning step compares the resonance frequency with a reference resonance frequency, and sends a warning signal when the resonance frequency is greater than the reference resonance frequency.

請參照第1圖，其繪示依照本發明一實施方式之刀具狀態監測系統100的方塊圖。由第1圖可知，刀具狀態監測系統100包含一控制模組110以及一監控模組120。監控模組120訊號連接控制模組110以及一刀具，並包含一功率放大單元121以及一訊號處理單元122。功率放大單元121用以接收來自控制模組110的一偵測訊號，並將偵測訊號放大後輸出至刀具。訊號處理單元122用以接收自功率放大單元121的一反饋訊號，並將反饋訊號輸出至控制模組110。控制模組110透過反饋訊號計算出一刀具狀態資訊。藉此，可即時偵測刀具狀態，避免在刀具過度磨損之情況下繼續使用刀具造成儀器或者產品的損傷，並且可提升產品之良率。Please refer to FIG. 1 , which shows a block diagram of a tool condition monitoring system 100 according to an embodiment of the present invention. As can be seen from FIG. 1 , the tool condition monitoring system 100 includes a control module 110 and a monitoring module 120 . The monitoring module 120 is signal-connected to the control module 110 and a tool, and includes a power amplification unit 121 and a signal processing unit 122 . The power amplifying unit 121 is used for receiving a detection signal from the control module 110, amplifying the detection signal and outputting it to the cutting tool. The signal processing unit 122 is used for receiving a feedback signal from the power amplifying unit 121 and outputting the feedback signal to the control module 110 . The control module 110 calculates a tool state information through the feedback signal. In this way, the status of the tool can be detected in real time, avoiding damage to the instrument or product caused by continued use of the tool when the tool is excessively worn, and can improve the yield rate of the product.

控制模組110與監控模組120可連接一電源供應模組140，用以提供控制模組110以及監控模組120所需之電壓並受控制模組110控制並輸出一指定之電壓。具體而言，電源供應模組140可用以提供一指定之高電壓、大功率之直流電，但本揭示內容不以此為限。The control module 110 and the monitoring module 120 can be connected with a power supply module 140 to provide the voltage required by the control module 110 and the monitoring module 120 and be controlled by the control module 110 to output a specified voltage. Specifically, the power supply module 140 can be used to provide a specified high-voltage, high-power direct current, but the disclosure is not limited thereto.

監控模組120中，功率放大單元121係用以接收控制模組110之偵測訊號，並將其放大後再輸出至刀具。特別說明的是，功率放大單元121將偵測訊號放大之後可以一隔離線圈或一非接觸式線圈將偵測訊號傳送至刀具，確保偵測訊號傳輸的穩定度。傳送過程所需之電壓值以及偵測訊號之參數之數值係由控制模組110控制。In the monitoring module 120, the power amplifying unit 121 is used to receive the detection signal of the control module 110, amplify it and then output it to the cutting tool. It is particularly noted that after the power amplifying unit 121 amplifies the detection signal, it can transmit the detection signal to the tool with an isolated coil or a non-contact coil, so as to ensure the stability of the detection signal transmission. The voltage value required for the transmission process and the value of the parameters of the detection signal are controlled by the control module 110 .

控制模組110可包含一模態偵測訊號單元111以及一計算單元111a。模態偵測訊號單元111用以設定偵測訊號之一參數，其中參數包含一定值電壓及一調變頻率，且調變頻率可依照反饋訊號調整。計算單元111a用以接收反饋訊號並計算出刀具狀態資訊，其中刀具狀態資訊為一參考共振頻率。詳細而言，輸出至刀具之調變頻率之數值先以較大之調變頻率值偵測刀具，並得到反饋訊號。接著再調整以較小之調變頻率值偵測刀具並得到反饋訊號，如此偵測刀具複數次後得到一理想之反饋訊號，而此反饋訊號對應之調變頻率即為參考共振頻率；必須說明的是，所述的理想反饋訊號及其對應的參考共振頻率是反映出刀具需被更換的狀態或定義一使用壽命。調變頻率之範圍可由50Hz逐步調降至5Hz，藉以提升參考共振頻率之精準度。The control module 110 may include a mode detection signal unit 111 and a calculation unit 111a. The mode detection signal unit 111 is used to set a parameter of the detection signal, wherein the parameter includes a certain voltage and a modulation frequency, and the modulation frequency can be adjusted according to the feedback signal. The calculation unit 111a is used for receiving the feedback signal and calculating the tool state information, wherein the tool state information is a reference resonance frequency. Specifically, the value of the modulation frequency output to the tool first detects the tool with a larger modulation frequency value, and obtains a feedback signal. Then adjust to detect the tool with a smaller modulation frequency value and get a feedback signal, so that an ideal feedback signal can be obtained after detecting the tool multiple times, and the modulation frequency corresponding to this feedback signal is the reference resonance frequency; it must be explained It is desirable that the ideal feedback signal and its corresponding reference resonance frequency reflect the state of the tool to be replaced or define a service life. The range of modulation frequency can be gradually adjusted from 50Hz to 5Hz to improve the accuracy of the reference resonance frequency.

控制模組110可更包含一鎖頻偵測訊號單元112、一鎖頻計算單元112a以及一鎖頻警示單元112b。鎖頻偵測訊號單元112用以於刀具在一空負載狀態時設定偵測訊號之一鎖頻參數，其中鎖頻參數包含定值電壓及一鎖頻頻率，且鎖頻頻率依照參考共振頻率設定，其中空負載狀態之刀具係指刀具沒有在使用時之狀態。鎖頻計算單元112a用以接收反饋訊號並計算出刀具狀態資訊，其中刀具狀態資訊為一共振頻率。鎖頻警示單元112b用以比對共振頻率與參考共振頻率，並於共振頻率大於參考共振頻率時發出一警示訊號。詳細而言，鎖頻偵測訊號單元112根據計算單元111a算出之參考共振頻率設定鎖頻頻率，並以此鎖頻頻率用以偵測空負載狀態之刀具，並得到一反饋訊號。接著，鎖頻計算單元112a在接收此反饋訊號後計算出刀具於空負載狀態時之刀具狀態資訊，其中刀具狀態資訊為一共振頻率。再者，鎖頻警示單元112b比較共振頻率與參考共振頻率之大小，若共振頻率大於參考共振頻率則發出一警示訊號；也就是說，當共振頻率大於參考共振頻率時，表示刀具的磨損程度已經到達需被更換狀態或已達預期壽命。The control module 110 may further include a frequency lock detection signal unit 112 , a frequency lock calculation unit 112 a and a frequency lock warning unit 112 b. The frequency-locking detection signal unit 112 is used to set a frequency-locking parameter of the detection signal when the tool is in an empty state, wherein the frequency-locking parameter includes a fixed value voltage and a frequency-locking frequency, and the frequency-locking frequency is set according to the reference resonance frequency, The tool in the empty load state refers to the state when the tool is not in use. The frequency-locking calculation unit 112a is used for receiving the feedback signal and calculating the tool state information, wherein the tool state information is a resonance frequency. The frequency locking warning unit 112b is used for comparing the resonance frequency with the reference resonance frequency, and sending out a warning signal when the resonance frequency is higher than the reference resonance frequency. Specifically, the frequency locking detection signal unit 112 sets the frequency locking frequency according to the reference resonance frequency calculated by the calculation unit 111a, and uses the frequency locking frequency to detect the tool in an empty state and obtain a feedback signal. Then, the frequency-locking calculation unit 112a calculates the tool state information when the tool is in the no-load state after receiving the feedback signal, wherein the tool state information is a resonance frequency. Furthermore, the frequency locking warning unit 112b compares the resonant frequency with the reference resonant frequency, and if the resonant frequency is higher than the reference resonant frequency, a warning signal is sent; Arrives in a state to be replaced or has reached its expected lifespan.

控制模組110更包含一鎖相偵測訊號單元113、一鎖相計算單元113a以及一鎖相警示單元113b。鎖相偵測訊號單元113用以於刀具在一使用狀態時設定偵測訊號之一鎖相參數，其中鎖相參數包含定值電壓及一鎖相頻率，且鎖相頻率依照參考共振頻率設定。鎖相計算單元113a用以接收反饋訊號並計算出刀具狀態資訊，其中刀具狀態資訊為一共振頻率。鎖相警示單元113b用以比對共振頻率與參考共振頻率，並於共振頻率大於參考共振頻率時發出一警示訊號。詳細而言，鎖相偵測訊號單元113根據計算單元111a算出之參考共振頻率設定鎖相頻率，並以此鎖相頻率用以偵測使用狀態之刀具，並得到一反饋訊號。接著，鎖相計算單元113a在接收此反饋訊號後計算出刀具於使用狀態時之刀具狀態資訊，其中刀具狀態資訊為一共振頻率。最後，鎖相警示單元113b比較共振頻率與參考共振頻率之大小，若共振頻率大於參考共振頻率則發出一警示訊號；也就是說，當共振頻率大於參考共振頻率時，表示刀具的磨損程度已經到達需被更換狀態或已達預期壽命。The control module 110 further includes a phase lock detection signal unit 113 , a phase lock calculation unit 113 a and a phase lock warning unit 113 b. The phase-locking detection signal unit 113 is used to set a phase-locking parameter of the detection signal when the tool is in use, wherein the phase-locking parameter includes a fixed value voltage and a phase-locking frequency, and the phase-locking frequency is set according to the reference resonance frequency. The phase-lock calculation unit 113a is used for receiving the feedback signal and calculating the tool status information, wherein the tool status information is a resonance frequency. The phase-lock warning unit 113b is used for comparing the resonance frequency with a reference resonance frequency, and sending out a warning signal when the resonance frequency is higher than the reference resonance frequency. Specifically, the phase-locking detection signal unit 113 sets the phase-locking frequency according to the reference resonance frequency calculated by the calculation unit 111a, and uses the phase-locking frequency to detect the tool in use and obtain a feedback signal. Then, the phase-lock calculation unit 113a calculates the tool state information when the tool is in use after receiving the feedback signal, wherein the tool state information is a resonance frequency. Finally, the phase-lock warning unit 113b compares the resonance frequency with the reference resonance frequency, and if the resonance frequency is greater than the reference resonance frequency, a warning signal is issued; that is, when the resonance frequency is greater than the reference resonance frequency, it indicates that the wear of the tool has The condition needs to be replaced or the expected life has been reached.

詳細而言，模態偵測訊號單元111分別與鎖頻偵測訊號單元112以及鎖相偵測訊號單元113訊號連接。若刀具已經藉由模態偵測訊號單元111獲取一參考共振頻率 ，下次可不須再以模態偵測訊號單元111偵測刀具，若刀具為一空負載狀態，則直接以鎖頻偵測訊號單元112偵測刀具；若刀具為一使用狀態，則直接以鎖相偵測訊號單元113偵測刀具。 In detail, the mode detection signal unit 111 is signally connected to the frequency lock detection signal unit 112 and the phase lock detection signal unit 113 respectively. If the tool has acquired a reference resonance frequency through the mode detection signal unit 111 , next time you don’t need to use the modal detection signal unit 111 to detect the tool. If the tool is in an empty state, then use the frequency-locking detection signal unit 112 to detect the tool directly; if the tool is in a use state, directly use the lock The phase detection signal unit 113 detects the tool.

刀具狀態監測系統100可更包含一外部資料庫130，其以一物聯網方式與控制模組110連接，將刀具狀態資訊儲存於外部資料庫130。藉此，有利於大量的資料蒐集及分析，以利精準地計算出刀具需被更換的狀態及刀具壽命。The tool status monitoring system 100 may further include an external database 130 , which is connected to the control module 110 in an Internet of Things manner, and stores tool status information in the external database 130 . In this way, it is beneficial to collect and analyze a large amount of data, so as to accurately calculate the status of the tool to be replaced and the tool life.

如上所述，刀具狀態監測系統100可即時於空負載狀態以及使用狀態下偵測刀具。藉此，可避免在刀具過度磨損之情況下繼續使用刀具造成儀器或者產品的損傷，並可提升產品之良率。另外，刀具狀態監測系統100更可即時偵測刀具狀態來預測刀具壽命，有利於刀具使用的安全性及效率。As mentioned above, the tool state monitoring system 100 can detect the tool in the no-load state and the use state in real time. In this way, the damage to the instrument or product caused by the continued use of the tool under the condition of excessive wear of the tool can be avoided, and the yield rate of the product can be improved. In addition, the tool state monitoring system 100 can detect the tool state in real time to predict the life of the tool, which is beneficial to the safety and efficiency of tool use.

請參照第2圖，其繪示依照本發明一實施方式之刀具狀態監測方法200的步驟方塊圖。由第2圖可知，刀具狀態監測方法200包含一訊號輸出步驟210、一訊號處理步驟220以及一訊號計算步驟230。訊號輸出步驟210係將一偵測訊號輸出至一刀具。訊號處理步驟220係自刀具接收一反饋訊號。訊號計算步驟230係透過反饋訊號計算出一刀具狀態資訊。第2圖實施方式之刀具狀態監測方法200可應用於第1圖實施方式之刀具狀態監測系統100，但本揭示內容不以此為限。Please refer to FIG. 2 , which shows a block diagram of steps of a tool state monitoring method 200 according to an embodiment of the present invention. It can be seen from FIG. 2 that the tool state monitoring method 200 includes a signal output step 210 , a signal processing step 220 and a signal calculation step 230 . The signal output step 210 is to output a detection signal to a tool. The signal processing step 220 is to receive a feedback signal from the tool. The signal calculation step 230 is to calculate a tool status information through the feedback signal. The tool state monitoring method 200 of the embodiment shown in FIG. 2 can be applied to the tool state monitoring system 100 of the embodiment shown in FIG. 1 , but the present disclosure is not limited thereto.

訊號輸出步驟210可包含一模態偵測訊號輸出步驟211，設定偵測訊號之一參數，其中參數包含一定值電壓及一調變頻率，且調變頻率可依照反饋訊號調整。在訊號計算步驟230中，透過反饋訊號計算出一刀具狀態資訊，其中刀具狀態資訊為一參考共振頻率。詳細而言，輸出至刀具之調變頻率之數值先以較大之調變頻率值偵測刀具，並得到反饋訊號。接著再調整以較小之調變頻率值偵測刀具並得到反饋訊號，如此偵測刀具複數次後得到一理想之反饋訊號，而此反饋訊號對應之調變頻率即為參考共振頻率；必須說明的是，所述的理想反饋訊號及其對應的參考共振頻率是反映出刀具需被更換的狀態或定義一使用壽命。據此，配合模態偵測訊號輸出步驟211執行一模態偵測模式。The signal output step 210 may include a modal detection signal output step 211, which sets a parameter of the detection signal, wherein the parameter includes a certain voltage and a modulation frequency, and the modulation frequency can be adjusted according to the feedback signal. In the signal calculation step 230, a tool state information is calculated through the feedback signal, wherein the tool state information is a reference resonance frequency. Specifically, the value of the modulation frequency output to the tool first detects the tool with a larger modulation frequency value, and obtains a feedback signal. Then adjust to detect the tool with a smaller modulation frequency value and get a feedback signal, so that an ideal feedback signal can be obtained after detecting the tool multiple times, and the modulation frequency corresponding to this feedback signal is the reference resonance frequency; it must be explained It is desirable that the ideal feedback signal and its corresponding reference resonance frequency reflect the state of the tool to be replaced or define a service life. Accordingly, a mode detection mode is executed in conjunction with the mode detection signal outputting step 211 .

請配合參照第3圖，係繪示依照第2圖實施方式之刀具狀態監測方法200執行模態偵測模式的步驟流程圖。由第2圖及第3圖可知，步驟S01可先啟動模態偵測模式。步驟S02輸出偵測訊號至刀具，其中偵測訊號包含定值電壓及調變頻率。步驟S03接收並記錄反饋訊號，其中反饋訊號包含電流訊號及相位訊號。步驟S04根據反饋訊號計算刀具狀態資訊。步驟S05根據刀具狀態資訊確認是否具備頻率共振點；若否，則進入步驟S06發出一提示訊號，並進入步驟S07判斷此提示訊號是否為進行重複掃頻，若是，則回到步驟S02再次調整調變頻率的數值後，再次執行步驟S03至步驟S05；若於步驟S05中，判斷的結果為是，代表具備頻率共振點，則進入步驟S08，儲存對應此頻率共振點的相關反饋訊號資料，並進入步驟S09，將頻率共振點設定為參考共振頻率。Please refer to FIG. 3 , which is a flow chart showing the steps of executing the modal detection mode according to the tool state monitoring method 200 of the embodiment shown in FIG. 2 . It can be seen from FIG. 2 and FIG. 3 that step S01 can first activate the mode detection mode. Step S02 outputs a detection signal to the tool, wherein the detection signal includes a fixed value voltage and a modulation frequency. Step S03 receives and records the feedback signal, wherein the feedback signal includes a current signal and a phase signal. Step S04 calculates tool state information according to the feedback signal. Step S05 confirms whether there is a frequency resonance point according to the state information of the tool; if not, proceed to step S06 to send a prompt signal, and proceed to step S07 to judge whether the prompt signal is for repeated frequency sweeping, if so, return to step S02 to adjust the tuning again After changing the value of the frequency, execute step S03 to step S05 again; if the judgment result in step S05 is yes, it means that there is a frequency resonance point, then enter step S08, store the relevant feedback signal data corresponding to the frequency resonance point, and Enter step S09, and set the frequency resonance point as the reference resonance frequency.

訊號輸出步驟210更包含一鎖頻偵測訊號輸出步驟212，於刀具在一空負載狀態時設定偵測訊號之一鎖頻參數，其中鎖頻參數包含定值電壓及一鎖頻頻率，且鎖頻頻率依照參考共振頻率設定。空負載狀態之刀具係指刀具沒有在使用時之狀態。在訊號計算步驟230中，透過反饋訊號計算出一刀具狀態資訊，其中刀具狀態資訊為一共振頻率。詳細而言，鎖頻偵測訊號輸出步驟212根據訊號計算步驟230算出之參考共振頻率設定鎖頻頻率，並以此鎖頻頻率用以偵測空負載狀態之刀具，並得到一反饋訊號。接著，訊號計算步驟230在接收此反饋訊號後計算出刀具於空負載狀態時之刀具狀態資訊，其中刀具狀態資訊為一共振頻率。據此，配合鎖頻偵測訊號輸出步驟212執行一鎖頻偵測模式。The signal output step 210 further includes a frequency lock detection signal output step 212, which sets a frequency lock parameter of the detection signal when the tool is in an empty state, wherein the frequency lock parameter includes a fixed value voltage and a frequency lock frequency, and the frequency lock The frequency is set according to the reference resonance frequency. The tool in the empty state refers to the state when the tool is not in use. In the signal calculation step 230, a tool state information is calculated through the feedback signal, wherein the tool state information is a resonance frequency. In detail, the frequency locking detection signal output step 212 sets the frequency locking frequency according to the reference resonance frequency calculated in the signal calculation step 230, and uses the frequency locking frequency to detect the tool in an empty state, and obtains a feedback signal. Then, the signal calculation step 230 calculates the tool state information when the tool is in the no-load state after receiving the feedback signal, wherein the tool state information is a resonance frequency. Accordingly, a frequency lock detection mode is executed in conjunction with the frequency lock detection signal outputting step 212 .

請配合參照第4圖，係繪示依照第2圖實施方式之刀具狀態監測方法200執行鎖頻偵測模式的步驟流程圖。由第2圖及第4圖可知，步驟S11可先啟動鎖頻偵測模式。步驟S12輸出偵測訊號至刀具。步驟S13接收並記錄反饋訊號，其中反饋訊號包含電流訊號及相位訊號。步驟S14根據反饋訊號計算刀具狀態資訊，其中刀具狀態資訊為一共振頻率。步驟S15根據刀具狀態資訊確認刀具狀態是否良好；若是，則進入步驟S16輸出刀具狀態資訊並回到步驟S13再次執行步驟S14及S15；若否，則進入步驟S17發出一警示。必須說明的是，步驟S15的確認方式，是將步驟S14中取得的共振頻率與第3圖步驟S09取得的參考共振頻率進行比對，若共振頻率大於參考共振頻率即表示需更換刀具，而由步驟S17發出警示。Please refer to FIG. 4 , which is a flow chart showing the steps of executing the frequency-locking detection mode according to the tool state monitoring method 200 in the embodiment shown in FIG. 2 . It can be seen from FIG. 2 and FIG. 4 that step S11 can first start the frequency lock detection mode. Step S12 outputs a detection signal to the tool. Step S13 receives and records the feedback signal, wherein the feedback signal includes a current signal and a phase signal. Step S14 calculates tool state information according to the feedback signal, wherein the tool state information is a resonance frequency. Step S15 confirms whether the tool is in good condition according to the tool status information; if yes, proceeds to step S16 to output the tool status information and returns to step S13 to execute steps S14 and S15 again; if not, proceeds to step S17 to issue a warning. It must be noted that the confirmation method of step S15 is to compare the resonance frequency obtained in step S14 with the reference resonance frequency obtained in step S09 in FIG. Step S17 issues a warning.

訊號輸出步驟210可更包含一鎖相偵測訊號輸出步驟213，於刀具在一使用狀態時設定偵測訊號之一鎖相參數，其中鎖相參數包含定值電壓及一鎖相頻率，且鎖相頻率依照參考共振頻率設定。在訊號計算步驟230中，透過反饋訊號計算出一刀具狀態資訊，其中刀具狀態資訊為一共振頻率。詳細而言，鎖相偵測訊號輸出步驟213根據訊號計算步驟230算出之參考共振頻率設定鎖相頻率，並以此鎖相頻率用以偵測使用狀態之刀具，並得到一反饋訊號。接著，訊號計算步驟230在接收此反饋訊號後計算出刀具於使用狀態時之刀具狀態資訊，其中刀具狀態資訊為一共振頻率。據此，配合鎖相偵測訊號輸出步驟213執行一鎖相偵測模式。The signal output step 210 may further include a phase-lock detection signal output step 213, which sets a phase-lock parameter of the detection signal when the tool is in use, wherein the phase-lock parameter includes a fixed value voltage and a phase-lock frequency, and the lock The phase frequency is set according to the reference resonance frequency. In the signal calculation step 230, a tool state information is calculated through the feedback signal, wherein the tool state information is a resonance frequency. Specifically, the phase-lock detection signal output step 213 sets the phase-lock frequency according to the reference resonance frequency calculated in the signal calculation step 230 , and uses the phase-lock frequency to detect the tool in use and obtain a feedback signal. Then, the signal calculation step 230 calculates the tool state information when the tool is in use after receiving the feedback signal, wherein the tool state information is a resonance frequency. Accordingly, a phase lock detection mode is executed in conjunction with the phase lock detection signal outputting step 213 .

請配合參照第5圖，係繪示依照第2圖實施方式之刀具狀態監測方法200執行鎖相偵測模式的步驟流程圖。由第2圖及第5圖可知，步驟S21可先啟動鎖相偵測模式。步驟S22輸出偵測訊號至刀具。步驟S23接收並記錄反饋訊號，其中反饋訊號包含電流訊號及相位訊號。步驟S24根據反饋訊號計算刀具狀態資訊，其中刀具狀態資訊為一共振頻率。步驟S25根據刀具狀態資訊確認刀具狀態是否良好；若是，則進入步驟S26維持原偵測訊號回到步驟S23再次執行步驟S24及S25；若否，則進入步驟S27調整偵測訊號。步驟S28判斷共振頻率是否大於參考共振頻率；若否，則回到步驟S23再次執行步驟S24及S25；若是，則進入步驟S29執行一警示步驟，即發出警示。Please refer to FIG. 5 , which is a flow chart showing the steps of executing the phase-lock detection mode according to the tool state monitoring method 200 of the embodiment shown in FIG. 2 . It can be seen from FIG. 2 and FIG. 5 that in step S21, the phase lock detection mode can be activated first. Step S22 outputs a detection signal to the tool. Step S23 receives and records the feedback signal, wherein the feedback signal includes a current signal and a phase signal. Step S24 calculates tool state information according to the feedback signal, wherein the tool state information is a resonance frequency. Step S25 confirms whether the tool is in good condition according to the tool status information; if yes, proceed to step S26 to maintain the original detection signal and return to step S23 to execute steps S24 and S25 again; if not, proceed to step S27 to adjust the detection signal. Step S28 judges whether the resonant frequency is higher than the reference resonant frequency; if not, returns to step S23 and executes steps S24 and S25 again; if so, proceeds to step S29 to perform a warning step, that is, to issue a warning.

具體而言，若刀具已經藉由模態偵測訊號輸出步驟211獲取一參考共振頻率，再次使用時，可不須再以模態偵測訊號輸出步驟211偵測刀具。若刀具為一空負載狀態，則直接進入鎖頻偵測訊號輸出步驟212偵測刀具；若刀具為一使用狀態，則直接進入鎖相偵測訊號輸出步驟213偵測刀具。Specifically, if the tool has obtained a reference resonance frequency through the modal detection signal output step 211 , when it is used again, it is not necessary to use the modal detection signal output step 211 to detect the tool again. If the cutting tool is in an empty state, then directly enter the frequency-locking detection signal output step 212 to detect the cutting tool; if the cutting tool is in a use state, then directly enter the phase-locking detection signal output step 213 to detect the cutting tool.

刀具狀態監測方法200可更包含一警示步驟240，比對共振頻率與參考共振頻率，並於共振頻率大於參考共振頻率時發出一警示訊號。詳細來說，警示步驟240可分別於鎖頻偵測模式或鎖相偵測模式中依據刀具狀態資訊適時發出警示，達到提示更換刀具的效果。The tool state monitoring method 200 may further include a warning step 240, comparing the resonance frequency with a reference resonance frequency, and sending a warning signal when the resonance frequency is greater than the reference resonance frequency. In detail, the warning step 240 can issue a warning according to the state information of the cutting tool in the frequency-locking detection mode or the phase-locking detection mode respectively, so as to achieve the effect of reminding to change the cutting tool.

刀具狀態監測方法200可更包含刀具狀態資訊儲存步驟250，係將刀具狀態資訊儲存於一外部資料庫。The tool status monitoring method 200 may further include a tool status information storing step 250, which is to store the tool status information in an external database.

如上所述，刀具狀態監測方法200可即時於空負載狀態以及使用狀態下偵測刀具。藉此，可避免在刀具過度磨損之情況下繼續使用刀具造成儀器或者產品的損傷，並且可進一步提升產品之良率。進一步來說，刀具狀態監測方法200可即時於空負載狀態以及使用狀態下偵測刀具使刀具壽命之預測成為可能，可更加有效的控制成品之良率。As mentioned above, the tool state monitoring method 200 can detect the tool in the no-load state and the use state in real time. In this way, it is possible to avoid damage to instruments or products caused by continued use of the tool under the condition of excessive wear of the tool, and to further improve the yield rate of the product. Furthermore, the tool state monitoring method 200 can detect the tool in the no-load state and the use state in real time, making it possible to predict the life of the tool, and can control the yield rate of the finished product more effectively.

雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention should be defined by the scope of the appended patent application.

100:刀具狀態監測系統 110:控制模組 111:模態偵測訊號單元 111a:計算單元 112:鎖頻偵測訊號單元 112a:鎖頻計算單元 112b:鎖頻警示單元 113:鎖相偵測訊號單元 113a:鎖相計算單元 113b:鎖相警示單元 120:監控模組 121:功率放大單元 122:訊號處理單元 130:外部資料庫 140:電源供應模組 200:刀具狀態監測方法 210:訊號輸出步驟 211:模態偵測訊號輸出步驟 212:鎖頻偵測訊號輸出步驟 213:鎖相偵測訊號輸出步驟 220:訊號處理步驟 230:訊號計算步驟 240:警示步驟 250:刀具狀態資訊儲存步驟 S01,S02,S03,S04,S05,S06,S07,S08,S09,S11,S12,S13,S14,S15,S16,S17,S21,S22,S23,S24,S25,S26,S27,S28,S29:步驟 100: Tool status monitoring system 110: Control module 111: Mode detection signal unit 111a: Computing unit 112:Frequency lock detection signal unit 112a: frequency-locking calculation unit 112b: frequency locking warning unit 113: Phase lock detection signal unit 113a: phase-locked calculation unit 113b: phase lock warning unit 120:Monitoring module 121: Power amplifier unit 122: Signal processing unit 130:External database 140: Power supply module 200: Tool Condition Monitoring Method 210: Signal output steps 211: Mode detection signal output steps 212: Frequency lock detection signal output steps 213: Phase lock detection signal output steps 220: Signal processing steps 230: Signal Calculation Steps 240: Warning steps 250: Tool status information storage steps S01,S02,S03,S04,S05,S06,S07,S08,S09,S11,S12,S13,S14,S15,S16,S17,S21,S22,S23,S24,S25,S26,S27,S28,S29: step

第1圖係繪示依照本發明一實施方式之刀具狀態監測系統的方塊圖； 第2圖係繪示依照本發明一實施方式之刀具狀態監測方法的步驟方塊圖； 第3圖係繪示依照第2圖實施方式之刀具狀態監測方法執行模態偵測模式的步驟流程圖； 第4圖係繪示依照第2圖實施方式之刀具狀態監測方法執行鎖頻偵測模式的步驟流程圖；以及 第5圖係繪示依照第2圖實施方式之刀具狀態監測方法執行鎖相偵測模式的步驟流程圖。 Fig. 1 is a block diagram illustrating a tool state monitoring system according to an embodiment of the present invention; FIG. 2 is a block diagram showing the steps of a tool state monitoring method according to an embodiment of the present invention; FIG. 3 is a flow chart showing the steps of executing the mode detection mode according to the tool state monitoring method of the embodiment in FIG. 2; Fig. 4 is a flow chart showing the steps of executing the frequency-locking detection mode according to the tool state monitoring method of the embodiment in Fig. 2; and FIG. 5 is a flow chart showing the steps of executing the phase-lock detection mode according to the tool state monitoring method of the embodiment shown in FIG. 2 .

100:刀具狀態監測系統 100: Tool status monitoring system

110:控制模組 110: Control module

111:模態偵測訊號單元 111: Mode detection signal unit

111a:計算單元 111a: Computing unit

112:鎖頻偵測訊號單元 112: Frequency lock detection signal unit

112a:鎖頻計算單元 112a: frequency-locking calculation unit

112b:鎖頻警示單元 112b: frequency lock warning unit

113:鎖相偵測訊號單元 113: Phase lock detection signal unit

113a:鎖相計算單元 113a: phase-locked calculation unit

113b:鎖相警示單元 113b: phase lock warning unit

120:監控模組 120:Monitoring module

121:功率放大單元 121: Power amplifier unit

122:訊號處理單元 122: Signal processing unit

130:外部資料庫 130:External database

140:電源供應模組 140: Power supply module

Claims (8)

一種刀具狀態監測系統，包含：一控制模組；以及一監測模組，訊號連接該控制模組以及一刀具，包含：一功率放大單元，用以接收來自該控制模組的一偵測訊號，並將該偵測訊號放大後輸出至該刀具；及一訊號處理單元，用以接收自該刀具的一反饋訊號，並將該反饋訊號輸出至該控制模組；其中，該控制模組透過該反饋訊號計算出一刀具狀態資訊；其中，該控制模組包含：一模態偵測訊號單元，用以設定該偵測訊號之一參數，其中該參數包含一定值電壓及一調變頻率，且該調變頻率可依照該反饋訊號調整；以及一計算單元，用以接收該反饋訊號並計算出該刀具狀態資訊，其中該刀具狀態資訊為一參考共振頻率。 A tool state monitoring system, including: a control module; and a monitoring module, the signal is connected to the control module and a tool, including: a power amplification unit, used to receive a detection signal from the control module, The detection signal is amplified and output to the tool; and a signal processing unit is used to receive a feedback signal from the tool and output the feedback signal to the control module; wherein, the control module passes the The feedback signal calculates a tool state information; wherein, the control module includes: a modal detection signal unit for setting a parameter of the detection signal, wherein the parameter includes a certain value voltage and a modulation frequency, and The modulation frequency can be adjusted according to the feedback signal; and a calculation unit is used to receive the feedback signal and calculate the tool state information, wherein the tool state information is a reference resonance frequency. 如請求項1所述之刀具狀態監測系統，其中該控制模組更包含：一鎖頻偵測訊號單元，用以於該刀具在一空負載狀態時設定該偵測訊號之一鎖頻參數，其中該鎖頻參數包含該定值電壓及一鎖頻頻率，且該鎖頻頻率依照該參考共振頻率設定；一鎖頻計算單元，用以接收該反饋訊號並計算出該刀具 狀態資訊，其中該刀具狀態資訊為一共振頻率；以及一鎖頻警示單元，用以比對該共振頻率與該參考共振頻率，並於該共振頻率大於該參考共振頻率時發出一警示訊號。 The tool state monitoring system as described in claim 1, wherein the control module further includes: a frequency-locking detection signal unit, which is used to set a frequency-locking parameter of the detection signal when the tool is in an empty state, wherein The frequency locking parameter includes the fixed value voltage and a frequency locking frequency, and the frequency locking frequency is set according to the reference resonance frequency; a frequency locking calculation unit is used to receive the feedback signal and calculate the tool State information, wherein the tool state information is a resonant frequency; and a frequency-locking warning unit for comparing the resonant frequency with the reference resonant frequency, and sending out a warning signal when the resonant frequency is greater than the reference resonant frequency. 如請求項1所述之刀具狀態監測系統，其中該控制模組更包含：一鎖相偵測訊號單元，用以於該刀具在一使用狀態時設定該偵測訊號之一鎖相參數，其中該鎖相參數包含該定值電壓及一鎖相頻率，且該鎖相頻率依照該參考共振頻率設定；一鎖相計算單元，用以接收該反饋訊號並計算出該刀具狀態資訊，其中該刀具狀態資訊為一共振頻率；以及一鎖相警示單元，用以比對該共振頻率與該參考共振頻率，並於該共振頻率大於該參考共振頻率時發出一警示訊號。 The tool state monitoring system as described in claim 1, wherein the control module further includes: a phase-lock detection signal unit, which is used to set a phase-lock parameter of the detection signal when the tool is in a use state, wherein The phase-locking parameters include the fixed value voltage and a phase-locking frequency, and the phase-locking frequency is set according to the reference resonance frequency; a phase-locking calculation unit is used to receive the feedback signal and calculate the status information of the tool, wherein the tool The state information is a resonant frequency; and a phase-locked warning unit, which is used for comparing the resonant frequency with the reference resonant frequency, and sends out a warning signal when the resonant frequency is higher than the reference resonant frequency. 如請求項1所述之刀具狀態監測系統，更包含：一外部資料庫，以一物聯網方式與該控制模組連接，將該刀具狀態資訊儲存於該外部資料庫。 The tool state monitoring system as described in claim 1 further includes: an external database, connected to the control module through an Internet of Things, and storing the tool state information in the external database. 一種刀具狀態監測方法，包含：一訊號輸出步驟，將一偵測訊號輸出至一刀具； 一訊號處理步驟，自該刀具接收一反饋訊號；以及一訊號計算步驟，透過該反饋訊號計算出一刀具狀態資訊；其中，該訊號輸出步驟包含一模態偵測訊號輸出步驟，設定該偵測訊號之一參數，其中該參數包含一定值電壓及一調變頻率，且該調變頻率可依照該反饋訊號調整；其中，該訊號計算步驟中，該刀具狀態資訊為一參考共振頻率。 A tool state monitoring method, comprising: a signal output step of outputting a detection signal to a tool; A signal processing step, receiving a feedback signal from the tool; and a signal calculation step, calculating a tool status information through the feedback signal; wherein, the signal output step includes a modal detection signal output step, setting the detection A parameter of the signal, wherein the parameter includes a certain voltage and a modulation frequency, and the modulation frequency can be adjusted according to the feedback signal; wherein, in the signal calculation step, the tool state information is a reference resonance frequency. 如請求項5所述之刀具狀態監測方法，其中該訊號輸出步驟更包含一鎖頻偵測訊號輸出步驟，於該刀具在一空負載狀態時設定該偵測訊號之一鎖頻參數，其中該鎖頻參數包含該定值電壓及一鎖頻頻率，且該鎖頻頻率依照該參考共振頻率設定；其中，該訊號計算步驟中，透過該反饋訊號計算出該刀具狀態資訊，其中該刀具狀態資訊為一共振頻率。 The tool state monitoring method as described in claim 5, wherein the signal output step further includes a frequency lock detection signal output step, and a frequency lock parameter of the detection signal is set when the tool is in an empty state, wherein the lock The frequency parameter includes the fixed value voltage and a frequency lock frequency, and the frequency lock frequency is set according to the reference resonance frequency; wherein, in the signal calculation step, the tool status information is calculated through the feedback signal, wherein the tool status information is a resonant frequency. 如請求項5所述之刀具狀態監測方法，其中該訊號輸出步驟更包含一鎖相偵測訊號輸出步驟，於該刀具在一使用狀態時設定該偵測訊號之一鎖相參數，其中該鎖相參數包含該定值電壓及一鎖相頻率，且該鎖相頻率依照該參考共振頻率設定；其中，該訊號計算步驟中，透過該反饋訊號計算出該刀具狀態資訊，其中該刀具狀態資訊為一共振頻率。 The tool state monitoring method as described in claim 5, wherein the signal output step further includes a phase lock detection signal output step, and a phase lock parameter of the detection signal is set when the tool is in a use state, wherein the lock The phase parameters include the fixed value voltage and a phase-lock frequency, and the phase-lock frequency is set according to the reference resonance frequency; wherein, in the signal calculation step, the tool status information is calculated through the feedback signal, wherein the tool status information is a resonant frequency. 如請求項6或7所述之刀具狀態監測方法，更包含：一警示步驟，比對該共振頻率與該參考共振頻率，並於該共振頻率大於該參考共振頻率時發出一警示訊號。 The tool state monitoring method as described in Claim 6 or 7 further includes: a warning step, comparing the resonance frequency with the reference resonance frequency, and sending a warning signal when the resonance frequency is greater than the reference resonance frequency.
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TW201226100A (en) * 2010-12-28 2012-07-01 Nat Univ Chung Hsing Method and device to detect the state of cutting tool in machine tool
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TW201521954A (en) * 2013-12-11 2015-06-16 Ind Tech Res Inst Method to separate signal and noise for chatter monitor and device thereof
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CN105871079A (en) * 2016-05-20 2016-08-17 华中科技大学 Wireless transmission system applicable to intelligent milling cutter
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