TWI789926B - Grinding system, grinding states sensing system, database and method thereof - Google Patents

Abstract

A grinding system for sensing grinding states includes a controller and a grinding device having a grinding wheel, and a server that executes an application, a database, and multiple sensors. The application program determines an extremum point according to processing requirements and a target particle size of a workpiece’s polishing surface and a processing parameter range map, and transmits the processing parameters represented by the extremum point to the controller for blank run, and receives an extremum sensing background raw data from a plurality of sensors, which is processed to be an extremum sensing background data; the grinding device grinds another workpiece, and receives an extremum sensing raw data from the plurality of sensors, and subtracts the extremum sensing background raw data from it to obtain an extremum sensing raw net data which is signal processed to obtain an extremum sensing data. The extremum sensing data is used to determine whether the grinding wheel is abnormal or not when other workpieces are being ground.

Description

Grinding system, grinding state sensing system, database and method thereof

A system, especially a grinding system, a grinding state sensing system, a monitoring system, a database and a method.

Grinding is a processing method that is more difficult to control but also more important among common processing methods. This is because the tool used in this processing method is a grinding wheel, and the surface morphology of the grinding wheel will change continuously during the grinding process, so it is necessary to constantly check and confirm whether the grinding wheel is working normally in various ways. At the same time, grinding is usually the final stage of the process, so it is necessary to ensure the stability of the grinding process, because once the processing fails, it means that all previous efforts will be wasted, which will only increase costs and consume time.

On the other hand, existing sensors for monitoring the grinding process are usually installed in the equipment or on the grinding wheel. The sensors installed in the equipment are usually expensive. Under the consideration of funds, usually only a single sensor is installed for monitoring, and under the condition of only one sensor, the installation position of the sensor There are also great limitations. At the same time, the electronic control and wiring must also be coordinated to eliminate unknown noise. On the other hand, the sensor installed on the grinding wheel needs subsequent processing on the grinding wheel during the installation process, but ordinary users cannot process the grinding wheel by themselves due to safety considerations, let alone install the sensor on the grinding wheel. Therefore, how to monitor the grinding process in a simple and effective way, and how to give timely feedback and adjust the processing parameters has become an important development focus in the industry.

In order to solve the above problems, the present invention proposes a grinding system, a grinding state sensing system, a database for the grinding state sensing system and a grinding state sensing method, so as to improve the above-mentioned problem of how to confirm whether the grinding wheel is working normally . The present invention monitors and adjusts the grinding process at low cost, and installs a plurality of low-cost sensors in the processing area in the grinding device and the non-processing area in the equipment. The signals of these sensors are transmitted to specific equipment in a wired or wireless manner, stored and analyzed, and then the analysis results are sent back to the equipment to adjust equipment parameters in real time. During the processing, the equipment controller can automatically adjust the processing parameters according to the analysis results, so it has significant benefits for improving processing efficiency and stabilizing processing quality. On the other hand, since multiple sensors are used to monitor the grinding state together, the accuracy requirements for a single sensor are relatively low, and a sensing backup system can also be established, so the sensing stability can be easily maintained.

The grinding state sensing system, which includes: A grinding device, which has an accommodating space; a server executing an application; a gateway connected to the server; and A sensing unit, which includes a plurality of sensors, and these sensors are connected to the server via the gateway; wherein, The sensors are located in an accommodating space of a grinding device, and a workbench is arranged in the accommodating space, and the accommodating space also includes a plurality of observation areas and a plurality of measurement areas, and the observation areas are located in above the workbench or an upper surface of the workbench on which the measurement areas are located; The sensors include at least one vibration sensor, at least one sound sensor, at least one visible light sensor, at least one infrared sensor or at least one temperature sensor; wherein Any one of the at least one shock sensor can be arranged in any one of the measurement areas; Any one of the at least one temperature sensor can be arranged in any one of the measurement areas; Any one of the at least one sound sensor can be arranged in the accommodating space; Any one of the at least one visible light sensor can be arranged in any one of the observation areas; Any one of the at least one infrared sensor can be disposed in any one of the observation areas.

The database for the grinding state sensing system, where

The database is connected to a server; and the database is used for the server to store and read a sensing data provided by the grinding state sensing system and obtained by the server after processing the sensing data The result data of the grinding system can be provided in real time without abnormal operating conditions for adjusting the grinding system; the server can be a local server or a cloud server.

The grinding system, which includes: a grinding device; a controller, which is electrically connected to the grinding device to control the grinding device; a server, which executes an application program and is connected with the controller, so as to control the grinding device through the controller; a database connected to the server; a gateway connected to the server; and a sensing unit comprising a plurality of sensors connected to the server via the gateway; and The database is used for the server to store and read a sensing data provided by the sensing unit and the result data obtained after the server processes the sensing data; wherein The grinding unit consists of: a grinding wheel; a workbench, which is located below the grinding wheel; a support frame for supporting the grinding wheel and the table; and a box, which has an accommodating space for accommodating and setting the grinding wheel, the workbench, and the supporting frame; Wherein, the sensors are located in the accommodating space of the grinding device, and the accommodating space also includes a plurality of observation areas and a plurality of measurement areas, and the observation areas are located above the working table or on the working table. an upper surface of the table on which the measurement areas are located; and The sensors include at least one vibration sensor, at least one sound sensor, at least one visible light sensor, at least one infrared sensor or at least one temperature sensor; wherein Any one of the at least one vibration sensor can be set in any one of the measurement areas; Any one of the at least one temperature sensor can be provided in any one of the measurement areas; Any one of the at least one sound sensor can be arranged in the accommodating space; Any one of the at least one visible light sensor can be provided in any one of the observation areas; Any one of the at least one infrared sensor can be set in any one of the observation areas; wherein, the application program controls the controller and the grinding device based on a processing parameter range map corresponding to a workpiece, so as to Obtain the sensing data, and judge whether the grinding device is operating normally by comparing the sensing data with the sensing data stored in the database and the stored result data obtained after the server processes the sensing data .

The grinding state sensing method firstly provides a grinding system including: a controller, a grinding device having a grinding wheel, a server executing an application program and connected to the controller, a database connected to the server, The sensing unit is connected with the server. The grinding state sensing method also includes: Step S1: The application program determines an extreme point according to a preset processing requirement and a processing parameter range map. The processing requirement includes: the required processing time, the surface roughness of the workpiece after processing, and the consumption of the grinding wheel; Step S2: The application program transmits the processing parameter represented by the extreme value point to the controller and keeps the grinding wheel out of contact with the workpiece to control the idling of the grinding device, and receives an extreme value sensing background source from the sensing unit data, and store the extreme value sensing background raw data into the database; Step S3: The application program selects a section of data as long as a data measurement time from the received extreme value sensing background raw data for signal processing to obtain an extreme value sensing background data, and converts the extreme value The sensing background data is stored in the database; Step S4: The application uses the processing parameter represented by the extreme point to make the controller control the grinding device to grind a workpiece, and receive an extreme value sensing raw data from the sensing unit; Step S5: The application program selects a section of data from the extreme value sensing raw data that is as long as the data measurement time and subtracts the extreme value sensing background raw data from it to obtain an extreme value sensing raw net data, and performing signal processing on the extreme value sensing raw net data to obtain extreme value sensing data, and storing both the extreme value sensing data and the extreme value sensing raw data into the database; Step S6: The application judges whether there are workpieces to be processed, and if there are no workpieces to be processed, the process ends; Step S7: The application program uses the processing parameters represented by the extreme point to make the controller control the grinding device to perform grinding processing on another workpiece that is the same as the workpiece, and receive a working sensing raw data from the sensing unit ; Step S8: The application program selects a period of data that is as long as the data measurement time from the work sensing raw data and subtracts the extreme value sensing background raw data from it to obtain a work sensing raw net data, and converts the work Sensing raw net data for signal processing to obtain working sensing data; Step S9: Compare the working sensing data and the extreme value sensing data to determine whether there is any abnormality, if there is no abnormality, go to step S6; Step S10: When it is determined in step S9 that there is an abnormality, the application program shuts down the grinding device and sends out an alarm to notify relevant personnel. Preferably, step S10' can also be substituted for step S10: Step S10': The database also stores a non-abnormal operating condition of the grinding device, and the application program can obtain a current operating condition of the grinding device. When step S9 determines that there is an abnormality, the application program can compare the grinding device The current operating condition and one of the non-abnormal operating conditions of the grinding device in the database, so as to adjust the grinding device to the non-abnormal operating condition, so that the grinding device can continue processing. Preferably, the sensing unit is connected to the server via a gateway. Preferably, the sensing unit is arranged inside the grinding device. Preferably, the sensing unit includes at least one vibration sensor, at least one sound sensor, at least one visible light sensor, at least one infrared sensor or at least one temperature sensor. Preferably, the step S1 includes: the application program further determines the extremum point on an effective working boundary of the processing parameter range graph.

To sum up, the present invention uses a plurality of low-cost sensors to collect vibration, sound, sparks, infrared heat radiation temperature and contact temperature during grinding and store them, so that when the first workpiece is grinding, The data collected by the sensing unit is used as a benchmark for comparison, so as to judge whether the data collected during the grinding process of the subsequent workpiece is normal, so it can solve the problem of confirming whether the grinding wheel is working normally, and achieve the purpose of the present invention .

Please refer to shown in Fig. 1, Fig. 1 is a grinding system 1 of the present invention, comprising: a server 10 which has an application program 11, a database 20, a gateway (gateway) 30, a sensing unit 60 , a controller 40 and a grinding device 50. Wherein the server 10 can be but not limited to a desktop computer or a tablet computer, and the server 10 can be a local server or a cloud server, and the database 20 can be an independent hard drive externally connected to the server 10 The body may be a software system of the server 10 or a database system on the Internet or in the cloud, the gateway 30 has a wire or/and wireless data transmission function, and the controller 40 may be but not limited to an industrial computer.

The server 10 is respectively connected to the database 20 and the gateway 30, and the gateway 30 is connected to the sensing unit 60 in a wired or wireless manner, such as through Ethernet (Ethernet), power line communication ( PLC), Bluetooth (Bluetooth), ZigBee (ZigBee), radio frequency identification (RFID), Z-Wave, etc.

The sensing unit 60 includes a plurality of vibration sensors 61 , a plurality of sound sensors 62 , a plurality of visible light sensors 63 , a plurality of infrared sensors 64 or a plurality of temperature sensors 65 . For example: the plurality of vibration sensors 61 can be used but not limited to low-cost vibration sensors with specifications of 100mv/g~5mv/g, 1~500g range; the plurality of sound sensors 62 can be used But not limited to specifications: a low-cost sound sensor with a frequency range of 100~20000Hz, a maximum sound wave sampling rate of 100kHz, and a sound level measurement range of 50~100dB; the plurality of visible light sensors 63 can be used but not limited to specifications It is: a low-cost light sensor with a brightness range of 0.1~2000 lux; the multiple infrared sensors 64 can be used but not limited to specifications: low-cost infrared with a temperature range of -150~100 degrees and 10~1500 degrees Thermal radiation temperature sensor; the plurality of temperature sensors 65 can be used but not limited to specifications: a low-cost contact temperature sensor with a temperature range of 10 to 2000 degrees; usually a plurality of sensors with a small measurement range The total cost of the measuring device is usually lower than the cost of a single sensor with a large measuring range, so the specification of any measuring device in the above-mentioned sensing unit 60 only needs to be within the range, and It is not limited that it must contain the range before it can be used. The sensing unit 60 is used to sense the vibration, sound, visible light, infrared heat radiation temperature or contact temperature generated during the operation of the grinding device 50, so as to monitor the operating state of the grinding device 50; the sensing unit 60 will It senses the vibration, sound, visible light, infrared heat radiation temperature or contact temperature and other sensing data generated during the operation of the grinding device 50 and continuously sends them back to the gateway 30 .

The application program 11 is executed on the server 10 to receive sensing data such as vibration, sound, visible light, infrared heat radiation temperature or contact temperature from the gateway 30 generated during the operation of the grinding device 50, especially The grinding device 50 senses grinding sensing data such as vibration, sound, visible light, infrared heat radiation temperature or contact temperature generated during workpiece grinding. The application program 11 processes and stores the sensing data received through the gateway 30 into the database 20 for subsequent search and comparison, so as to record and confirm the grinding state of the grinding device 50 . The controller 40 is connected with the grinding device 50 and can control the grinding device 50; the controller 40 is connected to the server 10 in a wired or wireless manner, and the application program 11 can also send a set of processing parameters to the The controller 40, so that the controller 40 controls the grinding device 50 to perform grinding according to the set of processing parameters.

Please refer to FIG. 2 , which shows a schematic view of the grinding device 50 grinding a workpiece 52 . The grinding device 50 includes a grinding wheel 51 , a box body 55 , a workbench 53 with an upper surface 531 and a supporting frame 54 with an upper surface 541 . The box body 55 forms an accommodating space to accommodate the grinding wheel 51, the worktable 53, the support frame 54, the workpiece 52 and the sensing unit 60. The front side of the box body has an opening, and the other sides are closed. . During the grinding process, the workpiece 52 is placed on the upper surface 531 of the worktable 53 , and the grinding wheel 51 is placed above the workpiece 52 for grinding the workpiece 52 .

The part of the accommodation space of the casing 55 above the upper surface 541 of the support frame 54 can be referred to as the processing area in the grinding device, and the rest of the accommodation space of the casing 55 can be referred to as the grinding device. the non-processing zone. The accommodating space of the box body 55 also has a plurality of corner regions 551, 552 and a plurality of side wall regions 553; The upper surface 531 of the workbench 53 or a plurality of observation areas 554 in contact with the upper surface 531 of the worktable 53, in addition, the upper surface 531 of the workbench 53 also has a plurality of measurement areas 532 adjacent to the grinding wheel 51, wherein, during the grinding process , the plurality of observation areas 554 and the plurality of measurement areas 532 will not interfere with the workpiece 52 . It can be seen that the plurality of observation areas 554 and the plurality of measurement areas 532 are located in the processing area of the grinding device, while the plurality of corner areas 551, 552 and the plurality of side wall areas 553 can be located in the processing area of the grinding device or non-processing zone.

Each of the plurality of measurement areas 532 can be provided with at least one vibration sensor 61 for sensing the vibration sensing data generated during the operation of the grinding device 50 and continuously sending it back to the gateway 30; Each of the plurality of measurement areas 532 can be provided with at least one temperature sensor 65, which is used to sense the contact temperature data generated during the operation of the grinding device 50 and continuously send it back to the gateway 30; The at least one sound sensor 62 can be arranged in the accommodation space of the box body 55, and under the premise of not interfering with other objects in the accommodation space of the workpiece 52 and the box body 55, its setting There is no particular limitation on the position of the position, such as but not limited to the plurality of measurement areas 532, the plurality of observation areas 554 or the plurality of corner areas 551, 552 and the plurality of side wall areas 553 can be set, the at least A sound sensor 62 is used to sense the sound sensing data generated by the grinding device 50 during operation and continuously send it back to the gateway 30 .

Each of the plurality of observation areas 554 can be provided with at least one visible light sensor 63 and/or at least one infrared sensor 64 respectively. The visible light sparks and other sensing data are sent back to the gateway 30 continuously. The infrared sensor 64 can be used to sense sensing data such as infrared heat radiation temperature generated by the grinding device 50 during operation and continuously send it back to the gateway 30 .

The workpiece 52 has a machining surface 521 , and the grinding wheel 51 is in contact with the machining surface 521 of the workpiece 52 for machining. When the processing surface 521 of the workpiece 52 is contacted by the grinding wheel 51, vibration, sound and temperature will be generated, as well as thermal radiation and even sparks will be generated. Therefore, the sensing unit 60 can be used to sense the vibration, vibration and temperature from different positions respectively. Sound, temperature, thermal radiation and sparks.

Please refer to the example shown in Fig. 3, Fig. 3 shows a processing parameter range figure 70 corresponding to the workpiece 52 in the method of the present invention, wherein the processing parameter system comprises a grinding wheel speed, a feed rate; the material and hardness of the workpiece And the dimensions are WC, HRA90, 100x50x30 mm, the model and size of the grinding wheel are 1A1D120N75, 350x20x127 mm, the moving speed of the worktable bed is 15 meters per minute (m/min), the front and rear feed of the worktable bed is 2 mm/pass. The processing parameter range map 70 is a given external data, not generated by the present invention. Figure 3 shows that there are three different areas, namely: processing parameter range, grinding wheel drag area and grinding wheel packing area. The processing parameter range has an effective working boundary 71, which is used to define the maximum feed rate (in microns) at a specific grinding wheel speed, and is also marked with the corresponding surface roughness of the processing surface 521 of the workpiece 52 (Ra, in microns). As for the dragging area of the grinding wheel, it represents the lower limit of the speed of the grinding wheel. If the speed of the grinding wheel falls into the dragging area of the grinding wheel, it can be considered that the grinding wheel has lost its cutting ability. As for the filling area of the grinding wheel, it defines the upper limit of the feed rate at a specific grinding wheel speed. If the feed rate falls into the filling area of the grinding wheel, it can also be considered that the grinding wheel has lost its cutting ability. The processing parameter range shown in Figure 70 contains the above processing parameters. system has been stored in the server 10. Based on the grinding system 1 of the present invention and the range of processing parameters corresponding to the workpiece 52, the present invention proposes a grinding state sensing method, which is described in detail as follows.

First, under the premise of confirming that the grinding wheel 51 operates safely, P vibration sensors 61 are arranged in the plurality of measurement areas 532 as shown in FIG. As shown in the plurality of measurement areas 532, Q sound sensors 62 are arranged in the plurality of measurement areas 532 and the plurality of corner areas 551, 552 or the plurality of side wall areas 553 as shown in FIG. , R visible light sensors 63 and O infrared sensors 64 are arranged in the plurality of observation areas 554 as shown in FIG. 2 , and the P vibration sensors 61, the Q sound sensors 62 , the R visible light sensors 63, the O infrared sensors 64 and the N temperature sensors 65 are all connected to the gateway 30, and the application program 11 can receive vibrations from the P sensor 61, the Q sound sensors 62, the R visible light sensors 63, the O infrared sensors 64 and the N temperature sensors 65, where N, O , P, Q, R are all integers greater than or equal to 0, and the sum of N, O, P, Q, R is an integer greater than 0.

Then, the application program 11 obtains the processing parameter range map 70 (including the effective working boundary 71) from the server 10 and obtains a processed workpiece surface roughness (Ra0) through the input of the messenger. The workpiece surface roughness (Ra0) after the processing, and based on the relationship between the workpiece surface roughness and the rotating speed in the effective working boundary 71, select a working speed (Rs0), according to the working speed (Rs0) on the effective working boundary 71 Find a corresponding maximum feed rate (Fd0), for example, when Ra0 is 0.57 microns, you can find an extreme point 72 corresponding to the value of Ra0 in Fig. 3, and its corresponding workpiece surface roughness after processing is 0.57 Micron, the corresponding coordinates of this extremum point 72 at this moment: grinding wheel speed (Rs) and feed rate (Fd) are respectively 1400 meters per minute and 20 microns, so according to the coordinates of this extremum point 72 in Fig. 3, can The selected corresponding working speed (Rs0) and maximum feed rate (Fd0) are 1400 m/min and 20 microns respectively.

Next, the application program 11 transmits the processing parameters represented by the extreme point 72 in FIG. The processing parameter represented by the value point 72 controls the grinding device 50 to run idle. At this time, the application program 11 can receive information from the P vibration sensors 61, the Q sound sensors 62, and the R visible light sensors. 63. An extreme value sensing background raw data sent by the O infrared sensors 64 and the N temperature sensors 65, the application program 11 is selected from the received extreme value sensing background raw data A section of data as long as a data measurement time Tm is subjected to signal processing such as fast Fourier transform (FFT) to obtain an extreme value sensing background data, and the extreme value sensing background original data and the extreme value sensing background data All are stored in the database 20.

Next, the application program 11 enables the controller 40 to control the grinding device 50 to grind the workpiece 52 according to the processing parameters represented by the extreme point 72 in FIG. 3 . At this time, the application program 11 can receive information from the P vibration sensors 61, the Q sound sensors 62, the R visible light sensors 63, the O infrared sensors 64 and the N temperature sensors. An extremum sensing raw data sent by the sensor 65, the application program 11 selects a section of data as long as the data measurement time from the extremum sensing raw data and subtracts the extremum sensing background raw data from it To obtain an extremum sensing original net data, the application program 11 performs signal processing on the extremum sensing raw net data such as fast Fourier transform (FFT) to obtain an extremum sensing data, and the extremum sensing Both the measured data and the extreme value sensing raw data are stored in the database 20, for example: the data measurement time is 2 seconds, and the extreme value sensing background raw data records the sense of idling from 0.1 second to 2.1 seconds Measured value (2 seconds length), the extreme value sensing raw data records the sensing value from 0 seconds to 10 seconds from the beginning to the end of the grinding process, then for example, the period from 0.5 seconds to 2.5 seconds can be selected The extremum sensing raw data (2 seconds in length), and then subtracting the extremum sensing background raw data (2 sec in length) therefrom to obtain the extremum sensing raw net data (2 sec in length), then the application 11 The extremum sensing raw net data is subjected to signal processing such as fast Fourier transform (FFT) to obtain the extremum sensing data.

In this way, when the grinding device 50 is used to grind another workpiece 52 of the same type with the same processing parameters, the application program 11 can receive the P vibration sensors 61, the Q sound sensors 62. The R visible light sensors 63, the O infrared sensors 64, and the N temperature sensors 65 send a working sensing raw data, and the application program 11 uses the working sensing raw data Select a piece of data as long as the data measurement time Tm and subtract the extreme value sensing background raw data from it to obtain a working sensing raw net data, the application program 11 performs signal processing on the working sensing raw net data as fast Fourier transform (FFT) to obtain a working sensing data, and compare the working sensing data with the extreme value sensing data, if an abnormality is found, for example, when a measurement value of the working sensing data is greater than the extreme value sensing data When measuring a measurement value of the work sensing data, the grinding device 50 will be shut down by the application program 11, and then it can be confirmed whether the cutting ability of the grinding wheel 51 has deteriorated, wherein the measurement value of the work sensing data refers to : Treat the work sensing data as a mathematical vector, and the measurement value is the length of the vector.

In another embodiment, the database 20 also stores a non-abnormal operating condition of the grinding device 50, and the application program 11 can obtain a current operating condition of the grinding device. When the above-mentioned abnormality occurs, the application program 11 Comparing the current operating condition of the grinding device 50 with the non-abnormal operating condition of the grinding device 50 in the database 20, to adjust the grinding device 50 to the non-abnormal operating condition, so that the grinding device 50 can continue processing .

Organize the above process into a flow chart (see Figures 4A and 4B): Step S0: Set the sensing unit 60 on a grinding device 50 and connect to a gateway 30 . Step S1: An application program 11 determines an extreme point 72 according to a given processing requirement and a processing parameter range map 70. The processing requirement includes: the required processing time, the surface roughness of the workpiece after processing (Ra0), the grinding wheel consumption. Among them, the time required for processing can be obtained by calculating the operating parameters of the equipment, such as the speed and distance of the left and right movement of the bed, the speed and distance of the front and back of the bed, and the descending speed and distance of the grinding wheel. The grinding wheel consumption and workpiece surface roughness can be automatically measured and stored by the corresponding measuring equipment built in the machine, or stored offline after being measured by an external measuring equipment. Step S2: The application program 11 transmits the processing parameter represented by the extreme point 72 to the controller 40 and prevents the grinding wheel 51 from contacting the workpiece 52 to control the grinding device 50 to idle, and then receives the processing parameter from the sensing unit 60 An extremum sensing background raw data. Step S3: The application program 11 selects a section of data as long as a data measurement time Tm from the received extreme value sensing background raw data to perform signal processing to obtain an extreme value sensing background data, and Both the extreme value sensing background raw data and the extreme value sensing background data are stored in the database 20 . Step S4: The application program 11 makes the controller 40 control the grinding device 50 to grind a workpiece 52 with the processing parameter represented by the extreme point 72, and receives an extreme value sensing signal from the sensing unit 60 material. Step S5: the application program 11 selects a section of data from the extreme value sensing raw data that is as long as the data measurement time and subtracts the extreme value sensing background raw data therefrom to obtain an extreme value sensing raw net data, and Signal processing is performed on the extreme value sensing raw net data to obtain extreme value sensing data, and both the extreme value sensing data and the extreme value sensing raw data are stored in the database 20 . Step S6: The application program 11 judges whether there are workpieces 52 to be processed? If there are no workpieces 52 to be processed, the process ends. Step S7: The application program 11 makes the controller 40 control the grinding device 50 to grind another workpiece 52 identical to the workpiece 52 with the processing parameters represented by the extreme point 72, and the sensing unit 60 A work sensing raw data is received. Step S8: The application program 11 selects a section of data as long as the data measurement time Tm from the work sensing raw data and subtracts the extreme value sensing background raw data therefrom to obtain a work sensing raw net data, and Signal processing is performed on the working sensing raw data to obtain working sensing data. Step S9: Compare the working sensing data and the extreme value sensing data to determine whether there is any abnormality, and if there is no abnormality, go to step S6. Step S10: The application program 11 shuts down the grinding device 50 and sends out an alarm to notify relevant personnel. Please refer to FIG. 4C , in another embodiment, the above step S10 is replaced by step S10'. Step S10': The database 20 also stores a non-abnormal operating condition of the grinding device 50, and the application program can obtain a current operating condition of the grinding device 50. When step S9 determines that there is an abnormality, the application program 11 can compare The current operating condition of the grinding device 50 and the non-abnormal operating condition of the grinding device 50 in the database 20 are used to adjust the grinding device 50 to the non-abnormal operating condition so that the grinding device 50 continues processing.

After receiving the warning notification, relevant personnel can conduct further inspections to confirm whether the grinding wheel 51 is normal, and to determine how to adjust subsequent processing parameters.

To sum up, the present invention can automatically collect vibration, sound, sparks, infrared heat radiation temperature, contact temperature and other data during grinding from multiple low-cost sensors and organize and store them, so the first workpiece can be ground. At the same time, the data collected by the sensing unit is the benchmark for comparison, so as to judge whether the data collected by the subsequent workpiece during grinding is normal. Therefore, the problem of confirming whether the grinding wheel is working normally can be solved, and the present invention is achieved. the goal of.

Considering that when a batch of identical workpieces are processed, the condition of the emery wheel should be the best at the beginning, so in the present invention, for this batch of identical workpieces, the data collected during the grinding of the first workpiece is used as It should be appropriate to judge whether the subsequent workpiece grinding process is normal or not.

Based on the grinding system 1, the present invention proposes a grinding state sensing system, which includes the server 10, the gateway 30, the grinding device 50 and the sensing unit 60, the grinding state sensing system can be regarded as the grinding Part of System 1.

Based on the grinding system 1 and the above method, the present invention also proposes a database for the grinding state sensing system, the database 20 is used for the server 10 to store and read the grinding state sensing system provided A sensing data and the result data obtained after the server 10 processes the sensing data, the database can be regarded as a part of the grinding system 1 and the above-mentioned method.

The above embodiments of the present invention are only preferred embodiments of the present invention, and the present invention is not limited thereto.

1: Grinding system

10:Server

11: Apps

20: Database

30: Gateway

40: Controller

50: Grinding device

51: grinding wheel

52: Workpiece

521: Processing surface

53:Workbench

531: upper surface

54: support frame

541: upper surface

55: Box

551: corner area

552: corner area

553: side wall area

554: Observation area

60: Sensing unit

61:Shock sensor

62: Sound sensor

63: Visible light sensor

64: Infrared sensor

65:Temperature sensor

70:Machining parameter range chart

71: Effective working boundary

72:Extreme point

FIG. 1 is a schematic diagram of a grinding system corresponding to the present invention. FIG. 2 is an application schematic diagram corresponding to a grinding device of the present invention. FIG. 3 is a range diagram of processing parameters corresponding to a workpiece used when the present invention is applied to the workpiece. 4A-4C are flowcharts of the grinding state sensing method of the present invention.

1: Grinding system

10:Server

11: Apps

20: Database

30: Gateway

40: Controller

50: Grinding device

60: Sensing unit

61:Shock sensor

62: Sound sensor

63: Visible light sensor

64: Infrared sensor

65:Temperature sensor

Claims (18)

A grinding state sensing method, which provides a grinding system comprising: a controller, a grinding device having a grinding wheel, a server executing an application program and connected to the controller, a database and the server Connection, a sensing unit which is connected to the server, the grinding state sensing method includes: Step S1: the application program determines an extreme value on an effective working boundary of a processing parameter range map according to a preset processing requirement point, wherein the extremum point is a processing parameter point defined in the processing parameter range map relative to a surface roughness on the boundary between grinding wheel packing and normal operation; step S2: the application program represents the extremum point The processing parameters are transmitted to the controller and the grinding wheel is not in contact with the workpiece to control the idling of the grinding device, and receive an extreme value sensing background raw data from the sensing unit, and send the extreme value sensing background raw data Save to the database; step S3: the application program selects a section of data as long as a data measurement time from the received extreme value sensing background raw data for signal processing to obtain an extreme value sensing background data , and store the extreme value sensing background data into the database; step S4: the application program uses the processing parameters represented by the extreme point to make the controller control the grinding device to perform grinding processing on a workpiece, and from the The sensing unit receives an extremum sensing raw data; step S5: the application program selects a section of data from the extremum sensing raw data that is as long as the data measurement time and subtracts the extremum sensing background raw data from it to obtain Obtaining an extreme value sensing original net data, and performing signal processing on the extreme value sensing original net data to obtain an extreme value sensing data, and combining the extreme value sensing data and the extreme value sensing original data Save to this database. The grinding state sensing method as described in claim 1, further comprising: step S6: the application judges whether there are workpieces to be processed, and if there are no workpieces to be processed, the process ends; Step S7: The application program uses the processing parameters represented by the extreme point to make the controller control the grinding device to perform grinding processing on another workpiece that is the same as the workpiece, and receive a working sensing raw data from the sensing unit ; Step S8: The application program selects a section of data with the same measurement time as the data from the work sensing raw data and subtracts the extreme value sensing background raw data therefrom to obtain a work sensing raw net data, and the Perform signal processing on the original clean data of the working sensing to obtain a working sensing data; step S9: compare the working sensing data and the extreme value sensing data to determine whether there is any abnormality, if not, go to step S6. The grinding state sensing method according to claim 1, wherein the sensing unit is connected to the server through a gateway. The grinding state sensing method according to claim 1, wherein the sensing unit is disposed inside the grinding device. The grinding state sensing method according to claim 1, wherein the sensing unit includes at least one vibration sensor, at least one sound sensor or at least one temperature sensor. The grinding state sensing method according to claim 1, wherein the sensing unit includes at least one visible light sensor or at least one infrared sensor. The grinding state sensing method as described in Claim 1, wherein the processing requirement includes: required processing time, surface roughness of the workpiece after processing, and grinding wheel consumption. The grinding state sensing method as described in claim 2 further includes: step S10: when it is determined in step S9 that there is an abnormality, the application program shuts down the grinding device and sends out an alarm to notify relevant personnel. The grinding state sensing method as described in claim 2, wherein, the database also stores a non-abnormal operating condition of the grinding device, and the application program can obtain a current operating condition of the grinding device, the grinding state sensor The test method further includes: Step S10': When step S9 determines that there is an abnormality, the application program can compare the current operating condition of the grinding device with the non-abnormal operating condition of the grinding device in the database, so as to adjust the grinding device to the non-abnormal operating condition , so that the grinding device continues processing. A grinding system, which includes: a grinding device, which has a grinding wheel; a controller, which is electrically connected to the grinding device to control the grinding device; a server, which executes an application program and is connected to the controller, to control the grinding device via the controller; a database, which is connected to the server; a gateway, which is connected to the server; and a sensing unit, which includes a plurality of sensors, the sensors The sensor is connected to the server through the gateway; and the database is used for the server to store and read a sensing data provided by the sensing unit and obtained after the server processes the sensing data The result data; the grinding system also includes steps S1-S5 of claim 1. The grinding system as described in claim 10, wherein the grinding device comprises: a worktable, which is located below the grinding wheel; a support frame, which is used to support the grinding wheel and the workbench; and a box, which There is an accommodating space for accommodating and setting the grinding wheel, the workbench and the supporting frame. The grinding system as described in claim 10, wherein the sensors are located in an accommodating space of the grinding device, a workbench is arranged in the accommodating space, and the accommodating space also includes a plurality of observation areas and a plurality of measurement areas, the observation areas being located above the workbench or an upper surface of the workbench, the measurement areas being located on the upper surface of the workbench; and These sensors include at least one vibration sensor, at least one sound sensor, at least one visible light sensor, at least one infrared sensor or at least one temperature sensor; wherein any of the measurement areas Any one of the at least one vibration sensor can be set in any one of the measurement areas; any one of the at least one temperature sensor can be set in any one of the measurement areas; any one of the at least one sound sensor can be set One can be set in the accommodating space; any one of the at least one visible light sensor can be set in any one of the observation areas; any one of the at least one infrared sensor can be set in any one of the observation areas any of the detectors. The grinding system as described in claim 10, wherein the application program controls the controller and the grinding device based on a processing parameter range map corresponding to a workpiece to obtain the sensing data, and compares the sensing data with The sensing data stored in the database and the stored result data obtained by the server after processing the sensing data are used to determine whether the grinding device is in normal operation. A grinding state sensing system, which includes: a controller; a grinding device, which has a grinding wheel and an accommodating space; a server, which executes an application program and is connected to the controller; a database, which communicates with the controller The server is connected; a gateway, which is connected to the server; and a sensing unit, which includes a plurality of sensors, and the sensors are connected to the server through the gateway; wherein the The sensor is located in the accommodating space, and a workbench is set in the accommodating space, and the accommodating space also includes a plurality of observation areas and a plurality of measurement areas, and the observation areas are located on or above the workbench. An upper surface of the workbench, wherein the measuring areas are located on the upper surface of the workbench; the grinding state sensing system further includes steps S1-S5 of Claim 1. The grinding state sensing system as claimed in claim 14, wherein These sensors include at least one vibration sensor, at least one sound sensor, at least one visible light sensor, at least one infrared sensor or at least one temperature sensor; wherein the at least one vibration sensor Any one of the plurality of measurement regions can be arranged in any one of the plurality of measurement areas; any one of the at least one temperature sensor can be arranged in any one of the plurality of measurement regions; the at least one sound sensor Any one of the at least one visible light sensor can be set in any one of the plurality of observation areas; or any one of the at least one infrared sensor can be set in the accommodating space. It can be installed in any one of several observation areas. A database for a grinding state sensing system, wherein the database is connected to the server in the grinding state sensing system as described in claim 14 or 15; and the database is used for the server storing and reading the sensing data provided by the sensing unit in the grinding state sensing system described in claim 14 or 15 and the result data obtained after the server processes the sensing data. The database for the grinding state sensing system as described in claim 16, wherein the database can also provide a non-abnormal operating condition of the grinding system as described in claim 14 in real time. The database for the grinding state sensing system as described in claim 16 or 17, wherein the server can be a local server or a cloud server.

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