WO2024040702A1 - 数控机床时间-能量效率评估与控制方法、系统及装置 - Google Patents
数控机床时间-能量效率评估与控制方法、系统及装置 Download PDFInfo
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
- G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by monitoring or safety
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
- G05B19/408—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by data handling or data format, e.g. reading, buffering or conversion of data
- G05B19/4086—Coordinate conversions; Other special calculations
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
- G05B19/4155—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by program execution, i.e. part program or machine function execution, e.g. selection of a program
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/33—Director till display
- G05B2219/33099—Computer numerical control [CNC]; Software control [SWC]
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35356—Data handling
Definitions
- the invention belongs to the technical field of CNC machine tool energy efficiency data monitoring, and discloses a CNC machine tool time-energy efficiency evaluation and control method, system and device.
- CNC machine tools as a type of processing equipment commonly used in the manufacturing industry, account for a large proportion of carbon emissions in the manufacturing industry.
- the evaluation and control methods of time-energy efficiency in the processing process are studied to reduce unnecessary energy waste and meet the needs of low-carbon manufacturing. .
- the energy efficiency of CNC machine tools is not only affected by the processing rate and quality, but also equipment shutdown factors during the processing process will also affect the energy utilization efficiency. According to the current public technical analysis, the analysis of energy efficiency is mainly about the relationship between the machining process and energy efficiency. There is still a need for an assessment and control method of energy efficiency that can take into account time factors such as the startup and shutdown of CNC machine tools.
- disclosed embodiments of the present invention provide a CNC machine tool time-energy efficiency assessment and control method, system and device, specifically related to the technical fields of energy efficiency assessment and energy efficiency monitoring and improvement of manufacturing CNC machine tools.
- a CNC machine tool time-energy efficiency assessment and control method includes the following steps:
- the method of the present invention establishes a CNC machine tool startup rate model through the total planned processing time, downtime and non-operation time of the CNC machine tool within a given processing cycle; further, by constructing the planned processing effective energy model, the shutdown loss effective energy model, the operating time
- the internal target machining effective energy and additional standby energy model are used to establish a CNC machine tool time-energy efficiency model.
- a relationship model between startup rate, additional startup times and time-energy efficiency was established.
- the over-limit alarm function of time-energy efficiency of CNC machine tools is realized, and the time-energy efficiency of CNC machine tools is finally controlled within the target range.
- Step 1 Use the power sensor to collect the output power of the total power supply of the CNC machine tool in real time, and process and analyze the changes in the power curve state to obtain the total planned processing time T planed , downtime T downtime and additional startup of the CNC machine tool within a given processing cycle. times N;
- Step 2 Based on the downtime T downtime of the CNC machine tool, the number of additional startups N and the single startup time T startup of the CNC machine tool within the given processing cycle, the non-operating time T unavailable of the CNC machine tool is obtained.
- the calculation model is as follows:
- T unavailable T downtime +N ⁇ T startup
- T unavailable represents the non-operating time of the CNC machine tool
- T downtime represents the downtime
- N represents the number of additional startups
- T startup represents the startup time of the CNC machine tool
- Step 3 Calculate the CNC machine tool’s startup rate ⁇ availability through the total planned processing time T planed and non-operation time T planed of the CNC machine tool within a given processing cycle.
- the calculation model is as follows:
- ⁇ availability represents the CNC machine tool startup rate
- T planed represents the total planned processing time
- T planed represents the non-operation time of the CNC machine tool within the processing cycle
- Step 4 Based on the total planned processing time T planed of the CNC machine tool in the given processing cycle obtained above, combined with the ideal processing time T ideal_CT of the single part and the ideal processing energy E ideal of the single part, the total planned processing time of the CNC machine tool without shutdown is calculated.
- the effective energy of planned processing E planned its calculation model is as follows:
- E planed represents the total planned processing effective energy
- T planed represents the total planned processing time
- T ideal_CT represents the ideal processing time of a single part
- E ideal represents the ideal processing energy of a single part
- Step 5 Based on the non-operation time T unavailable of the CNC machine tool within a given processing cycle obtained above, combined with the ideal processing time T ideal_CT of a single part and the ideal processing energy E ideal of a single part, calculate the shutdown loss of the CNC machine tool when it is shut down.
- Effective energy E downtime its calculation model is as follows:
- E downtime represents the effective energy lost during shutdown
- T unavailable represents the non-operation time of the CNC machine tool
- T ideal_CT represents the ideal processing time of a single part
- E ideal represents the ideal processing energy of a single part
- Step 6 Calculate the target effective processing energy E available during the operation time of the CNC machine tool through the total planned effective energy E planed and the effective energy E downtime of the CNC machine tool in a given machining cycle obtained above.
- the calculation model is as follows:
- E available E planned -E downtime
- E available represents the target processing effective energy during operation
- E planed represents the total planned processing effective energy
- E downtime represents the effective energy lost during shutdown
- Step 7 Calculate the additional startup energy through the additional number of startups N of the CNC machine tool within a given processing cycle and the energy E startup required for one startup of the CNC machine tool.
- the calculation model is as follows:
- E startup_ex represents the additional startup energy of the CNC machine tool
- N represents the additional number of startups
- E startup represents the energy required for one startup of the CNC machine tool.
- Step 8 Calculate the time-energy efficiency ⁇ availability_e of the CNC machine tool through the target processing effective energy E available , downtime loss effective energy E downtime and additional startup energy E startup_ex during the operation time of the CNC machine tool in a given processing cycle, and its calculation model as follows:
- ⁇ availability_e represents the time-energy efficiency of the CNC machine tool
- E available represents the target processing effective energy during operation
- E downtime represents the effective energy lost during shutdown
- E startup_ex represents the additional startup energy of the CNC machine tool
- Step 9 Based on the CNC machine tool time-energy efficiency model and startup rate model obtained above, construct a relationship model between CNC machine tool time-energy efficiency, CNC machine tool startup rate, and additional startup times.
- the relationship model expression is as follows:
- ⁇ availability_e represents the time-energy efficiency of the CNC machine tool
- ⁇ availability represents the startup rate of the CNC machine tool
- T planed represents the total planned processing time of the CNC machine tool
- E ideal represents the ideal processing energy of a single part
- N represents the additional number of startups of the CNC machine tool
- E startup represents the energy required to start up the CNC machine once
- T ideal-CT represents the ideal processing time of a single part
- Step 10 Compare the calculated CNC machine tool time-energy efficiency ⁇ availability_e within a certain processing cycle with the preset CNC machine tool time-energy efficiency alarm lower limit value Compare, if it satisfies the relationship It indicates that the time-energy efficiency of the CNC machine tool is normal. If it satisfies the relationship Then an alarm will be issued to indicate that the CNC machine tool time-energy efficiency is abnormal, and at the same time, the CNC machine tool time-energy efficiency of the cycle, as well as CNC machine tool start-up rate, downtime, additional start-up times and other information will be displayed on the display;
- Step 11 According to the alarm prompt in step 10, the operator takes corresponding measures to control the changes in the shutdown factors of the CNC machine tool, improve the startup rate of the CNC machine tool and reduce the number of additional startups, so as to keep the time-energy efficiency of the CNC machine tool within the target range. .
- step 1 by installing a power sensor at the air switch of the CNC machine tool's main power supply, the power of the CNC machine tool's main power supply is collected in real time and A/D conversion is performed, and the resulting input power digital signal is transmitted to the information Process the terminal and perform filtering, identify the operating status of the CNC machine tool online through the input power information, and count the downtime and additional startup times of the CNC machine tool; set the CNC machine tool to be on when the processing cycle begins, then the CNC machine tool will be in the power-on state during the processing cycle.
- the total planned processing time is recorded as T planed
- the downtime of the CNC machine tool within the processing cycle is recorded as T downtime
- the additional number of starts of the CNC machine tool during the processing cycle is recorded as N.
- step 2 the CNC machine tool's first startup time T startup is calculated by measuring and recording the time required for a single startup of the CNC machine tool using the average value method. Time T startup .
- the ideal processing time T ideal_CT of the single part and the ideal processing energy E ideal of the single part are measured multiple times through a power sensor installed at the air switch of the CNC machine tool.
- the average value method is used to obtain the ideal processing time T ideal_CT of a single part and the ideal processing energy E ideal of a single part.
- step 7 the energy E startup required for the CNC machine tool to start up once is collected through the power sensor installed at the air switch during the startup process of the CNC machine tool.
- the energy data during the startup process of the CNC machine tool are measured multiple times and used to calculate The average value method is used to obtain the energy E startup required for a single startup.
- Another object of the present invention is to provide a CNC machine tool time-energy efficiency evaluation and control device including: CNC machine tool, power sensor, computer and display screen.
- the power sensor is used to measure the power of the CNC machine tool and obtain the energy data of the CNC machine tool;
- the computer is used to process the power signal and store the collected total planned processing time, downtime, additional startup times and energy data information required for a single startup of the CNC machine tool;
- the display screen is connected to the computer and is used to display CNC machine tool time-energy efficiency, startup rate, total planned processing time, downtime, additional startup times, and energy information required for a single startup.
- Another object of the present invention is to provide a CNC machine tool time-energy efficiency evaluation and control system including:
- the CNC machine tool non-running time acquisition module is used to obtain the output power of the CNC machine tool's total power supply through the power sensor in real time, and obtain the total planned processing time and downtime of the CNC machine tool by processing the changes in the power curve state, and then obtain the processing cycle.
- Internal CNC machine tool non-operation time is used to obtain the output power of the CNC machine tool's total power supply through the power sensor in real time, and obtain the total planned processing time and downtime of the CNC machine tool by processing the changes in the power curve state, and then obtain the processing cycle.
- the target processing effective energy acquisition module during operation time is used to calculate the startup rate of the CNC machine tool through the total planned processing time of the CNC machine tool and the non-operation time of the CNC machine tool; and then calculates the startup rate of the CNC machine tool through the total planned processing time, the non-operation time of the CNC machine tool and the single part
- the ideal processing time combined with the ideal processing time of a single part and the ideal processing energy of a single part, is used to calculate the total planned effective processing energy without shutdown and the effective energy lost by shutdown when there is shutdown, and then the target processing effective energy within the operation time is obtained.
- the relational model acquisition module is used to calculate the time-energy efficiency of the CNC machine tool from the target processing effective energy, the effective energy lost during shutdown and the additional startup energy during the operation time; based on the established CNC machine tool startup rate and time-energy efficiency, the CNC machine tool is constructed A relationship model between time-energy efficiency, CNC machine tool startup rate, and additional startup times; and real-time monitoring of CNC machine tool time-energy through the relationship model between CNC machine tool time-energy efficiency, CNC machine tool startup rate, and additional startup times efficiency, and alarm for energy efficiency exceeding limits.
- the computer device includes a memory and a processor.
- the memory stores a computer program.
- the computer program causes the processor to execute the This paper describes the time-energy efficiency evaluation and control method of CNC machine tools.
- the present invention has the following beneficial effects:
- the method of the present invention obtains the total planned processing time, downtime and non-operation time of the CNC machine tool within a given processing cycle by analyzing the power curve state change rules of the CNC machine tool based on time characteristics, and then establishes a CNC machine tool processing process start-up rate model; Based on the energy characteristics, the planned processing effective energy model, the shutdown loss effective energy model, the target processing effective energy during operation time and the additional standby energy model were constructed, and then a CNC machine tool time-energy efficiency model was established. Secondly, comprehensively considering the impact of CNC machine tool startup rate and additional startup times on CNC machine tool time-energy efficiency, a relationship model between CNC machine tool startup rate, additional startup times and CNC machine tool time-energy efficiency was established.
- the method of the present invention is a A practical and feasible method for time-energy efficiency evaluation and control of CNC machine tools.
- the evaluation method of the time-energy efficiency of the CNC machine tool processing process provided by the present invention is compared with the preset control lower limit value of the CNC machine tool time-energy efficiency to realize the lower limit alarm of the time-energy efficiency of the CNC machine tool processing process, thereby Stably control time-energy efficiency within the target range.
- the method of the present invention comprehensively considers the impact of factors such as the startup rate and additional startup times of CNC machine tool equipment on the energy efficiency of the CNC machine tool, and constructs a mathematical model of the time-energy efficiency of the CNC machine tool and the startup rate and additional startup times of the CNC machine tool.
- factors such as the startup rate and additional startup times of CNC machine tool equipment on the energy efficiency of the CNC machine tool
- constructs a mathematical model of the time-energy efficiency of the CNC machine tool and the startup rate and additional startup times of the CNC machine tool Through real-time monitoring of the time-energy efficiency of CNC machine tools, the over-limit alarm function of time-energy efficiency of CNC machine tools is realized, and the time-energy efficiency of CNC machine tools is finally controlled within the target range.
- the method of the present invention analyzes the impact of CNC machine tool shutdown losses on CNC machine tool energy efficiency, and can realize an over-limit alarm on CNC machine tool time-energy efficiency. This enables rapid and targeted measures to be taken during the machining process, which is a low-carbon and practical method for evaluating and controlling the
- the method of the present invention is based on the time characteristics and energy characteristics of the CNC machine tool processing process. It is considered that the startup rate and additional startup times of the CNC machine tool caused by frequent shutdowns affect the production efficiency of the CNC machine tool and will also seriously affect the energy utilization rate of the CNC machine tool. Based on this, a time-energy efficiency model is constructed, which provides a new index for the evaluation of energy efficiency in CNC machine tool machining processes.
- the method of the present invention realizes an over-limit alarm on the time-energy efficiency of the CNC machine tool through real-time monitoring and analysis of the CNC machine tool time-energy efficiency, so that the CNC machine tool operator can control the CNC machine tool time-energy efficiency within the target range in a targeted manner.
- the method of the present invention is not limited to CNC machine tools, but can also be extended to other mechanical equipment -
- the monitoring and control of energy efficiency provides effective new methods and technical support for achieving energy conservation and emission reduction in the manufacturing industry.
- Figure 1 is a schematic diagram of a CNC machine tool time-energy efficiency assessment and control method for low-carbon manufacturing provided by an embodiment of the present invention
- Figure 2 is a schematic diagram of a CNC machine tool time-energy efficiency evaluation and control device for low-carbon manufacturing provided by an embodiment of the present invention
- Figure 3 is a schematic diagram of a CNC machine tool time-energy efficiency evaluation and control system for low-carbon manufacturing provided by an embodiment of the present invention
- the time-energy efficiency evaluation and control method of CNC machine tools for low-carbon manufacturing includes: first, the method of the present invention establishes the method through the total planned processing time, downtime and non-operation time of the CNC machine tool within a given processing cycle. CNC machine tool startup rate model; further, by constructing the planned processing effective energy model, the shutdown loss effective energy model, the target processing effective energy during operation and the additional standby energy model, a CNC machine tool time-energy efficiency model is established.
- the CNC machine tool time-energy efficiency evaluation and control method for low-carbon manufacturing includes the following steps:
- Step 1 Install a power sensor at the air switch of the CNC machine tool's main power supply to collect the power of the CNC machine tool's main power supply in real time and perform A/D conversion.
- the resulting input power digital signal is transmitted to the information processing terminal and filtered.
- the input power information identifies the operating status of the CNC machine tool online and counts the downtime and additional startup times of the CNC machine tool. Set the CNC machine tool to be on when the processing cycle starts, then the total planned processing time of the CNC machine tool in the processing cycle (recorded as T planed ), the downtime of the CNC machine tool in the processing cycle (recorded as T downtime ), the CNC machine tool in the processing cycle of additional boot times (recorded as N).
- Step 2 The non-running time of the CNC machine tool consists of the machine tool downtime and the additional time consumed by starting the machine.
- the calculation formula is as follows:
- T unavailable T downtime +N ⁇ T startup
- T unavailable represents the non-operation time of the CNC machine tool
- T downtime represents the downtime
- N represents the number of additional startups
- T startup represents the startup time of the CNC machine tool.
- Step 3 Calculate the startup rate of the CNC machine tool based on the non-running time of the CNC machine tool obtained above and the total planned processing time.
- the calculation formula is as follows:
- ⁇ availability represents the CNC machine tool startup rate
- T planed represents the total planned processing time
- T unavailable represents the non-operation time of the CNC machine tool within the processing cycle.
- Step 4 When there is no downtime during the processing cycle, the total planned processing effective energy of the CNC machine tool is determined by the total planned processing time, the ideal processing time of the single part and the ideal processing energy of the single part.
- the calculation formula is as follows:
- E planed represents the total planned processing effective energy
- T planed represents the total planned processing time
- T ideal_CT represents the ideal processing time of a single part
- E ideal represents the ideal processing energy of a single part.
- Step 5 When there is shutdown during the machining cycle, based on the ideal processing time of a single part, the ideal processing energy of a single part, and the non-operation time of the CNC machine tool calculated above, the effective energy lost by the shutdown caused by the shutdown is calculated.
- the formula is as follows:
- E downtime represents the effective energy lost during shutdown
- T unavailable represents the non-operation time of the CNC machine tool during the processing cycle
- T ideal_CT represents the ideal processing time of a single part
- E ideal represents the ideal processing energy of a single part.
- Step 6 Based on the total planned effective processing energy and the effective energy lost during shutdown, calculate the target effective processing energy during the operation time.
- the calculation formula is as follows:
- E available E planned -E downtime
- E available represents the target processing effective energy during operation
- E planed represents the total planned processing effective energy
- E downtime represents the effective energy lost during shutdown.
- Step 7 During the machining cycle, the CNC machine tool is started up multiple times, causing extra energy, that is, extra startup energy.
- the calculation formula is as follows:
- E startup_ex represents the additional startup energy of the CNC machine tool
- N represents the additional number of startups
- E startup represents the energy required for one startup of the CNC machine tool.
- Step 8 Calculate the time-energy efficiency of the CNC machine tool based on the previously calculated CNC machine tool's total planned effective processing energy, target processing effective energy during operation and additional startup energy.
- the calculation formula is as follows:
- ⁇ availability_e represents the time-energy efficiency of the CNC machine tool
- E available represents the target processing effective energy during operation
- E downtime represents the effective energy lost during shutdown
- E startup_ex represents the additional startup energy of the CNC machine tool.
- Step 9 Based on the CNC machine tool startup rate calculation model and CNC machine tool time-energy efficiency calculation model obtained above, derive the relationship model between the CNC machine tool time-energy efficiency and the CNC machine tool startup rate and additional startup times.
- the relationship model Expressed as follows:
- ⁇ availability_e represents the time-energy efficiency of the CNC machine tool
- ⁇ availability represents the startup rate of the CNC machine tool
- T planed represents the total planned processing time of the CNC machine tool
- E ideal represents the ideal processing energy of a single part
- N represents the additional number of startups of the CNC machine tool
- E startup represents the energy required to start up the CNC machine once
- T ideal-CT represents the ideal processing time of a single part.
- Step 10 Compare the calculated CNC machine tool time-energy efficiency ⁇ availability_e within a certain processing cycle with the preset CNC machine tool time-energy efficiency alarm lower limit value Compare, if it satisfies the relationship It indicates that the time-energy efficiency of the CNC machine tool is normal. If it satisfies the relationship Then an alarm will be issued to indicate that the CNC machine tool time-energy efficiency is abnormal. At the same time, the CNC machine tool time-energy efficiency of the cycle, as well as CNC machine tool start-up rate, downtime, additional start-up times and other information are displayed on the display.
- Step 11 According to the alarm prompt in step 10, the operator takes corresponding measures to control the changes in the shutdown factors of the CNC machine tool, improve the startup rate of the CNC machine tool and reduce the number of additional startups, so as to keep the time-energy efficiency of the CNC machine tool within the target range. .
- the ideal processing time of a single part T ideal_CT With the ideal processing energy E ideal of a single part, through the power sensor installed at the air switch of the CNC machine tool, multiple measurements are made to obtain the time and energy of the CNC machine tool processing a single part under ideal processing parameters, and the average value is obtained to obtain the single part The ideal processing time of the part and the ideal processing energy of the single part.
- step 7 the energy E startup required for the CNC machine tool to start up once.
- the energy data during the startup process of the CNC machine tool are collected through the power sensor installed at the air switch, and the energy required for a single startup is calculated by averaging multiple measurements.
- the CNC machine tool time-energy efficiency evaluation and control device for low-carbon manufacturing includes: CNC machine tool 1, power sensor 2, computer 3 with Sql database installed, and display screen 4.
- the power sensor 2 is used to measure the power of the CNC machine tool 1 and obtain the energy data of the CNC machine tool.
- the computer 3 installed with the Sql database is used to process the power signal and store the collected data information such as the total planned processing time, downtime, additional startup times, and energy required for a single startup of the CNC machine tool;
- the display screen 4 is connected to the computer 3 and is used to display information such as CNC machine tool time-energy efficiency, startup rate, total planned processing time, downtime, additional startup times, and energy required for a single startup.
- the CNC machine tool time-energy efficiency evaluation and control system for low-carbon manufacturing includes:
- the CNC machine tool non-operation time acquisition module 5 is used to obtain the output power of the CNC machine tool's total power supply through the power sensor in real time, and obtain the total planned processing time and downtime of the CNC machine tool by processing the law of power curve state changes, and then obtain the processing CNC machine tool non-operation time during the cycle;
- the target processing effective energy acquisition module 6 during operation time is used to calculate the startup rate of the CNC machine tool through the total planned processing time of the CNC machine tool and the non-operation time of the CNC machine tool; and then calculates the startup rate of the CNC machine tool through the total planned processing time, the non-operation time of the CNC machine tool and the single piece
- the ideal processing time of the part, combined with the ideal processing time of a single part and the ideal processing energy of a single part, is calculated to calculate the total planned effective energy of processing without shutdown and the effective energy of shutdown loss when there is shutdown, and then the effective target processing within the operation time can be obtained energy;
- the relational model acquisition module 7 is used to calculate the time-energy efficiency of the CNC machine tool from the target processing effective energy, the effective energy lost during shutdown and the additional startup energy during the operation time; based on the established startup rate and time-energy efficiency of the CNC machine tool, a CNC machine tool is constructed The relationship model between machine tool time-energy efficiency and CNC machine tool startup rate and additional startup times; and through the relationship model between CNC machine tool time-energy efficiency and CNC machine tool startup rate and additional startup times, the CNC machine tool time-energy efficiency is monitored in real time, And perform over-limit alarm.
- the CNC machine tool non-operation time acquisition module 5 includes:
- the operating status identification module of the CNC machine tool is used to collect the power of the CNC machine tool's main power supply in real time by installing a power sensor at the air switch of the CNC machine tool's main power supply, perform A/D conversion, and transmit the resulting input power digital signal to the information processing
- the terminal performs filtering processing, identifies the operating status of the CNC machine tool online through the input power information, and counts the downtime and additional startup times of the CNC machine tool; when the CNC machine tool is set to be on when the processing cycle begins, the total number of CNC machine tools during the processing cycle
- the planned processing time is recorded as T planed
- the downtime of the CNC machine tool during the processing cycle is recorded as T downtime
- the additional number of startups of the CNC machine tool during the processing cycle is recorded as N.
- the CNC machine tool non-running time calculation module is used to calculate the CNC machine tool non-running time based on the machine tool downtime and additional startup time.
- the target processing effective energy acquisition module 6 during operation includes:
- the startup rate calculation module of CNC machine tools is used to calculate and obtain the startup rate of CNC machine tools.
- the overall planned processing effective energy calculation module is used to calculate and obtain the overall planned processing effective energy.
- the shutdown loss effective energy calculation module is used to calculate and obtain the shutdown loss effective energy.
- the target processing effective energy calculation module within the operating time is used to calculate and obtain the target processing effective energy within the operating time.
- the relationship model acquisition module 7 includes:
- the CNC machine tool time-energy efficiency calculation module is used to calculate the CNC machine tool time-energy efficiency based on the calculated CNC machine tool total planned processing effective energy, target processing effective energy during operation and additional startup energy;
- the relationship model building module between CNC machine tool time-energy efficiency and CNC machine tool startup rate and additional startup times is used to construct the relationship between CNC machine tool time-energy efficiency and CNC machine tool time-energy efficiency based on the obtained CNC machine tool startup rate calculation model and CNC machine tool time-energy efficiency.
- the relationship model between CNC machine tool startup rate and additional startup times is used to construct the relationship between CNC machine tool startup rate and additional startup times.
- Alarm prompt module used to compare the calculated CNC machine tool time-energy efficiency ⁇ availability_e within a certain processing cycle with the preset CNC machine tool time-energy efficiency alarm lower limit value Compare, if it satisfies the relationship It indicates that the time-energy efficiency of the CNC machine tool is normal; if the relationship is satisfied Then an alarm will be issued to indicate that the CNC machine tool time-energy efficiency is abnormal.
- the CNC machine tool time-energy efficiency of the cycle, as well as the CNC machine tool startup rate, downtime, additional startup times and other information are displayed on the display.
- Module completion means dividing the internal structure of the device into different functional units or modules to complete all or part of the functions described above.
- Each functional unit and module in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.
- the above-mentioned integrated unit can be hardware-based. It can also be implemented in the form of software functional units.
- the specific names of each functional unit and module are only for the convenience of distinguishing each other and are not used to limit the scope of the present invention.
- For the specific working processes of the units and modules in the above system please refer to the corresponding processes in the foregoing method embodiments, and will not be described again here.
- the computer device includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor.
- the processor executes The computer program implements the steps in any of the above method embodiments.
- Application embodiments of the present invention also provide a computer-readable storage medium that stores a computer program. When executed by a processor, the computer program can implement the steps in each of the above method embodiments.
- Application embodiments of the present invention also provide an information data processing terminal.
- the information data processing terminal is used to provide a user input interface to implement the steps in the above method embodiments when executed on an electronic device.
- the information data processing terminal Data processing terminals are not limited to mobile phones, computers, and switches.
- Application embodiments of the present invention also provide a server, which is configured to provide a user input interface to implement the steps in the above method embodiments when executed on an electronic device.
- Application embodiments of the present invention provide a computer program product.
- the steps in the above method embodiments can be implemented when the electronic device is executed.
- the time-energy efficiency evaluation and control method of CNC machine tools for low-carbon manufacturing provided by embodiments of the present invention is not limited to CNC machine tools, but can also be extended to the monitoring and control of time-energy efficiency of other mechanical equipment. Including related intelligent control equipment and robots in chemical processing, automobile manufacturing, electronic equipment processing, transportation infrastructure and other fields. When run on an electronic device, the steps in each of the above method embodiments can be implemented when the electronic device executes.
- the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
- the present invention can implement all or part of the processes in the methods of the above embodiments by instructing relevant hardware through a computer program.
- the computer program can be stored in a computer-readable storage medium.
- the computer program When executed by a processor, the steps of each of the above method embodiments may be implemented.
- the computer program includes computer program code, which may be in the form of source code, object code, executable file or some intermediate form.
- the computer-readable medium may at least include: any entity or device capable of carrying computer program code to the camera device/terminal device, recording media, computer memory, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), electrical carrier signals, telecommunications signals, and software distribution media.
- any entity or device capable of carrying computer program code to the camera device/terminal device recording media, computer memory, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), electrical carrier signals, telecommunications signals, and software distribution media.
- ROM read-only memory
- RAM random access memory
- electrical carrier signals telecommunications signals
- software distribution media for example, U disk, mobile hard disk, magnetic disk or CD, etc.
- the embodiment of the present invention takes the CNC machine tool model CK6153i as an example.
- the parts used are cylindrical parts.
- the method of the present invention is used to monitor the time-energy efficiency of the CNC machine tool during the processing cycle and alarm over limit, so as to realize the energy efficiency of the CNC machine tool. Efficiency assessment and control. In this embodiment, 3600 seconds are taken as a processing cycle for evaluation. details as follows:
- Step 1 Obtain CNC machine tool downtime and additional startup times
- the power of the CNC machine tool is collected in real time and A/D conversion is performed.
- the resulting power digital signal is transmitted to the information processing terminal and filtered.
- the power of the CNC machine tool is identified online through the input power information.
- Step 2 Obtain the time and energy required to start up the CNC machine once
- Step 3 Obtain the non-running time of CNC machine tools
- the additional number of starts N 3 is calculated.
- Step 4 Obtain the startup rate of the CNC machine tool
- the startup rate of the CNC machine tool is calculated.
- Step 5 Obtain the total planned processing effective energy
- a power sensor is used to detect the ideal processing energy of a single part.
- Step 6 Obtain the target processing effective energy during operation time
- the target effective processing energy during operation is obtained by subtracting the total planned effective energy for processing and the effective energy lost during shutdown.
- the calculation formula for the effective energy lost during shutdown is as follows: Among them, E downtime is the effective energy lost during shutdown, in kJ; T unavailable is the non-operation time of the CNC machine tool during the processing cycle, in s; T ideal_CT is the ideal processing time of a single part, in s; E ideal is the ideal processing time of a single part. Processing energy, unit is kJ.
- Step 7 Obtain additional startup energy of CNC machine tools
- Step 8 Obtain CNC machine time-energy efficiency
- ⁇ availability_e is the time-energy efficiency of the CNC machine tool
- E available is the target processing effective energy during operation, in kJ
- E downtime is the effective energy lost during shutdown, in kJ
- E startup_ex is the additional startup energy of the CNC machine tool, in kJ kJ.
- Step 9 Obtain the relationship model between time-energy efficiency and startup rate of CNC machine tools
- eta availablity_e is the time-energy efficiency of the CNC machine tool
- eta availablity is the startup rate of the CNC machine tool
- T planed is the total planned processing time of the CNC machine tool, in s
- E ideal is the ideal processing energy of a single part, in kJ
- N is The number of additional startups of the CNC machine tool
- E startup is the energy required for one startup of the CNC machine tool, in kJ
- T ideal-CT is the ideal processing time of a single part, in s.
- the total planned processing time of the CNC machine tool during the processing cycle is 3600s
- the ideal processing energy of a single part of the CNC machine tool is 152.9kJ
- the number of starts is 3 times
- the CNC machine tool The energy required to start up the machine once is 1.33kJ
- the ideal processing time of a single part is 105s.
- Step 10 Monitoring of time-energy efficiency of CNC machine tools and over-limit alarm
- the lower limit of time-energy efficiency of CNC machine tools It is derived based on the historical data of the CNC machine tool processing process and the experience of managers. Assume that the lower limit of time-energy efficiency of the CNC machine tool in this embodiment Taking 10:00-11:00 am on January 8th as an example, it is known from the above that the time-energy efficiency of the CNC machine tool is 90.32%, which satisfies the relationship It means that the CNC machine tool time-energy efficiency is within the target range.
- the time-energy efficiency of CNC machine tools is abnormal.
- an alarm is issued and information such as the CNC machine tool's time-energy efficiency ⁇ availablity_e , the CNC machine tool startup rate eta availablity , the CNC machine tool downtime T downtime , and the CNC machine tool's additional startup times N are displayed on the display.
- Step 11 Adjust relevant parameters and control CNC machine tool time-energy efficiency
- the machine tool operator makes targeted adjustments to the CNC machine tool CK6153i processing parameters to control the CNC machine tool time-energy efficiency within the target range.
- the method of the invention can be used for scientific evaluation and monitoring of the time-energy efficiency of CNC machine tools in the manufacturing industry, to control the time-energy efficiency of CNC machine tools within the target range, and to realize energy control of the CNC machine tool production and processing process.
- the method of the invention provides effective and practical technical and method support for realizing energy conservation and emission reduction in the manufacturing industry.
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Abstract
Description
Claims (10)
- 一种数控机床时间-能量效率评估与控制方法,其特征在于,该方法包括:通过给定加工周期内数控机床的总计划加工时间、停机时间以及非运转时间,建立数控机床开机率模型;通过构建计划加工有效能量模型、停机损失有效能量模型、运转时间内目标加工有效能量以及额外待机能量模型,建立数控机床时间-能量效率模型;基于数控机床开机率和额外开机次数对数控机床能量效率的影响分析结果,建立开机率、额外开机次数与时间-能量效率的关系模型;基于建立的开机率、额外开机次数与时间-能量效率的关系模型,通过对数控机床时间-能量效率的实时监测,进行数控机床时间-能量效率的超限报警,并将数控机床的时间-能量效率控制在目标范围内。
- 根据权利要求1所述的数控机床时间-能量效率评估与控制方法,其特征在于,所述数控机床时间-能量效率评估与控制方法具体包括以下步骤:步骤1,通过功率传感器实时采集数控机床总电源的输出功率,并处理分析功率曲线状态变化的规律进而得出给定加工周期内数控机床的总计划加工时间T planed、停机时间T downtime和额外开机次数N;步骤2,通过给定加工周期内数控机床的停机时间T downtime、额外开机次数N以及单次开机时间T startup,得出数控机床非运转时间T unavailable;步骤3,通过给定加工周期内数控机床的总计划加工时间T planed以及非运转时间T planed,计算出数控机床的开机率η availablity;步骤4,通过前述得到的给定加工周期内数控机床的总计划加工时间T planed,结合单件零件理想加工时间T ideal_CT与单件零件理想加工能量E ideal,计算得到数控机床无停机时的总计划加工有效能量E planed;步骤5,通过前述得到的给定加工周期内数控机床的非运转时间T unavailable,结合单件零件理想加工时间T ideal_CT与单件零件理想加工能量E ideal,计算得到数控机床存在停机时的停机损失有效能量E downtime;步骤6,通过前述得到的给定加工周期内数控机床的总计划加工有效能量E planed与停机损失有效能量E downtime,计算得到数控机床运转时间内目标加工有效能量E available;步骤7,通过给定加工周期内数控机床的额外开机次数N和数控机床单次开机所需能量E startup,计算得到额外开机能量E startup_ex;步骤8,通过给定加工周期内数控机床的运转时间内目标加工有效能量E available、停机损失有效能量E downtime和额外开机能量E startup_ex,计算得到数控机床的时间-能量效率η availablity_e;步骤9,根据前述得到的数控机床时间-能量效率模型以及开机率模型,构建数控机床时间-能量效率与数控机床开机率、额外开机次数之间的关系模型;步骤11,操作人员根据步骤10的报警提示,针对数控机床的停机因素变化情况采取相应措施进行控制,使数控机床时间-能量效率处于在目标范围内。
- 根据权利要求2所述的数控机床时间-能量效率评估与控制方法,其特征在于,在步骤1中,通过在数控机床总电源空气开关处安装一个功率传感器,实时采集数控机床总电源的功率并进行A/D转换,将所得的输入功率数字信号传输至信息处理终端并进行滤波处理,通过输入功率信息在线识别出数控机床的运行状态,统计数控机床的停机时间和额外开机次数;设定加工周期开始时数控机床处于开机状态,则数控机床加工周期内的总计划加工时间,记为T planed,加工周期内数控机床的停机时间,记为T downtime,加工周期内数控机床的额外开机次数,记为N;在步骤2数控机床非运转时间T unavailable计算模型如下:T unavailable=T downtime+N×T startup其中:T unavailable表示数控机床非运转时间,T downtime表示停机时间,N表示额 外开机次数,T startup表示数控机床单次开机时间;所述数控机床单次开机时间T startup,通过多次测量并记录数控机床的单次开机所需要的时间,采用平均值法计算得到数控机床单次开机时间T startup。
- 根据权利要求2所述的数控机床时间-能量效率评估与控制方法,其特征在于,在步骤3中,数控机床的开机率η availablity计算模型如下:其中:η availablity表示数控机床开机率,T planed表示总计划加工时间,T planed表示加工周期内数控机床非运转时间;在步骤4中,数控机床无停机时的总计划加工有效能量E planed计算模型如下:其中:E planed表示总计划加工有效能量,T planed表示总计划加工时间,T ideal_CT表示单件零件理想加工时间,E ideal表示单件零件理想加工能量;所述单件零件理想加工时间T ideal_CT和单件零件理想加工能量E ideal,通过在数控机床空气开关处安装的功率传感器,多次测量得出数控机床在理想加工参数条件下加工单件零件所需要的时间和能量,采用平均值法得到单件零件理想加工时间T ideal_CT和单件零件理想加工能量E ideal。
- 根据权利要求2所述的数控机床时间-能量效率评估与控制方法,其特征在于,在步骤6中,数控机床运转时间内目标加工有效能量E available计算模型如下:E available=E planed-E downtime其中:E available表示运转时间内目标加工有效能量,E planed表示总计划加工有效能量,E downtime表示停机损失有效能量。
- 根据权利要求2所述的数控机床时间-能量效率评估与控制方法,其特征在于,在步骤7,额外开机能量计算模型如下:E startup_ex=N×E startup其中,E startup_ex表示数控机床的额外开机能量,N表示额外开机次数,E startup表示数控机床单次开机所需能量;在步骤8中,数控机床的时间-能量效率η availablity_e计算模型如下:其中:η availablity_e表示数控机床时间-能量效率,E available表示运转时间内目标加工有效能量,E downtime表示停机损失有效能量,E startup_ex表示数控机床的额外开机能量;在步骤9中,数控机床时间-能量效率关系模型表达式如下:其中:η availablity_e表示数控机床时间-能量效率,η availablity表示数控机床的开机率,T planed表示数控机床总计划加工时间,E ideal表示单件零件理想加工能量,N表示数控机床额外开机次数,E startup表示数控机床单次开机所需能量,T ideal-CT表示单件零件的理想加工时间;
- 一种实施权利要求1~7任意一项所述数控机床时间-能量效率评估与控制方法的数控机床时间-能量效率评估与控制装置,其特征在于,所述数控机床时间-能量效率评估与控制装置包括:数控机床(1)、功率传感器(2)、计算机(3)和显示屏(4);所述功率传感器(2)用于测量数控机床(1)功率并得出数控机床的能量数据;计算机(3)用于处理功率信号,存储采集得到的数控机床总计划加工时间、停机时间、额外开机次数以及单次开机所需能量数据信息;显示屏(4)与计算机(3)相连,用于显示数控机床时间-能量效率、开机率、总计划加工时间、停机时间、额外开机次数、及单次开机所需能量信息。
- 一种实施权利要求1~7任意一项所述数控机床时间-能量效率评估与控制方法的数控机床时间-能量效率评估与控制系统,其特征在于;所述数控机床时间-能量效率评估与控制系统包括:数控机床非运转时间获取模块(5),用于获取通过功率传感器实时采集数控机床总电源的输出功率,通过处理功率曲线状态变化的规律得出数控机床的总计划加工时间和停机时间,进而得出加工周期内数控机床非运转时间;运转时间内目标加工有效能量获取模块(6),用于通过数控机床的总计划加工时间和数控机床非运转时间计算出数控机床的开机率;再通过总计划加工时间、数控机床非运转时间和单件零件理想加工时间,结合单件零件理想加工时间和单件零件理想加工能量分别计算出无停机时的总计划加工有效能量和存在停机时的停机损失有效能量,进而得出运转时间内目标加工有效能量;关系模型获取模块(7),用于由运转时间内目标加工有效能量、停机损失有效能量和额外开机能量计算得到数控机床的时间-能量效率;基于建立的数控 机床开机率和时间-能量效率,构建数控机床时间-能量效率与数控机床开机率、额外开机次数的关系模型;并通过所述数控机床时间-能量效率与数控机床开机率、额外开机次数的关系模型对数控机床时间-能量效率实时监测,并进行超限报警。
- 一种计算机设备,其特征在于,所述计算机设备包括存储器和处理器,所述存储器存储有计算机程序,所述计算机程序被所述处理器执行时,使得所述处理器执行权利要求1~7任意一项所述数控机床时间-能量效率评估与控制方法。
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| CN107193259A (zh) * | 2016-03-14 | 2017-09-22 | 重庆邮电大学 | 一种基于实时电量的数控机床主传动系统能耗和时间信息获取方法 |
| CN109491323A (zh) * | 2018-11-05 | 2019-03-19 | 山东科技大学 | 面向节能减排的数控机床负荷-能量效率评估与监测方法 |
| CN109634238A (zh) * | 2018-12-19 | 2019-04-16 | 山东科技大学 | 一种数控机床加工过程质量-能量效率评估与监控方法 |
| CN112255969A (zh) * | 2020-11-06 | 2021-01-22 | 重庆机电智能制造有限公司 | 一种数控机床的数据采集分析展示系统及方法 |
| CN113010980A (zh) * | 2021-03-04 | 2021-06-22 | 西南石油大学 | 一种基于㶲分析的数控机床综合能效测试方法 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118393987A (zh) * | 2024-06-27 | 2024-07-26 | 上海诺倬力机电科技有限公司 | 数控机床的实时监控方法、装置、设备、存储介质及产品 |
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| US20250036104A1 (en) | 2025-01-30 |
| GB2615869B (en) | 2024-07-24 |
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