CN109725599A - A kind of numerically-controlled machine tool efficiency on-line monitoring method - Google Patents
A kind of numerically-controlled machine tool efficiency on-line monitoring method Download PDFInfo
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- CN109725599A CN109725599A CN201711048731.3A CN201711048731A CN109725599A CN 109725599 A CN109725599 A CN 109725599A CN 201711048731 A CN201711048731 A CN 201711048731A CN 109725599 A CN109725599 A CN 109725599A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
A kind of numerically-controlled machine tool efficiency on-line monitoring method of the present invention, pass through installation power sensor at lathe main motor and at general supply, acquisition power information in real time, cutting power is isolated online using main transmission system of machine tool power balance equation and additional load loss characteristic, machine cut energy consumption is obtained, the on-line monitoring of lathe energy efficiency and utilization rate of equipment and installations is analyzed to realize；Lathe efficiency on-line monitoring method focuses on obtaining the variable energy consumption of lathe online: firstly, being filtered pretreatment, online recognition lathe operating status to the spindle power value obtained in real time；Then, cutting power is isolated in conjunction with lathe power balance equation and additional load loss characteristic.Accuracy with higher of the invention and convenient practicability have important supporting function for mechanical processing process and workshop energy efficiency evaluation, energy consumption prediction, energy management and Study on energy saving, have wide application prospect.
Description
Technical field
The invention belongs to numerically-controlled machine tool monitoring technical fields, particularly relate to a kind of numerically-controlled machine tool efficiency on-line monitoring side
Method.
Background technique
Energy-saving and emission-reduction are the important development strategies in China, and the machining system based on lathe has a large capacity and a wide range and energy
Utilization rate is low, and energy-saving and emission-reduction have a high potential, significant to the strategy of sustainable development；International Organization for standardization (ISO) formulates
ISO/DIS14955 machine tool environment evaluation criterion (Environment Evaluation of Machine Tools), emphasis is
The energy efficiency for improving lathe, realizes the energy-saving of machine industry.It is previous to improve production process energy efficiency it is proposed that crossing
Method: calculating and estimation to workshop energy consumption are the bases for carrying out energy management, and can not obtain the real-time energy of workshop manufacturing process
Consumption information is one of the obstruction of enterprise implement workshop energy management；With contact it is proposed that mistake: the emulation of application process chain adds to improve
The method of energy efficiency during work, this method can real-time measurement lathe energy consumption, but due to lacking cutting energy consumption, thus can not be right
Lathe energy efficiency and capacity usage ratio are assessed.The key that lathe carries out energy efficiency evaluation is to obtain real-time cutting energy
Consumption can be obtained cutting energy consumption by two methods: one is directly acquiring, i.e., install torsion (or torque) on lathe cutter saddle
Sensor, directly acquires cutting power, but this method is at high cost and influences lathe service performance, easily affected by environment；It is another
It is indirect gain, i.e., obtains cutting energy consumption by its lathe parameter, useful the method more rare at present carries out workshop energy consumption prison
It surveys and assesses.
Summary of the invention
The present invention addresses the above problem, makes up the deficiencies in the prior art, provides a kind of numerically-controlled machine tool efficiency and supervises online
Survey method；Accuracy with higher of the invention and convenient practicability, for mechanical processing process and workshop energy efficiency evaluation, energy
Consumption prediction, energy management and Study on energy saving have important supporting function, have wide application prospect.
To achieve the above object, the present invention adopts the following technical scheme that.
A kind of numerically-controlled machine tool efficiency on-line monitoring method of the present invention, it is characterised in that: by lathe main motor and
Installation power sensor at general supply, acquires power information in real time, using main transmission system of machine tool power balance equation and adds
Load loss characteristic isolates cutting power online, obtains machine cut energy consumption, to realize to lathe energy efficiency and equipment
The on-line monitoring of utilization rate is analyzed；Lathe efficiency on-line monitoring method focuses on obtaining the variable energy consumption of lathe online: firstly, right
The spindle power value obtained in real time is filtered pretreatment, online recognition lathe operating status；Then, in conjunction with lathe power-balance
Equation and additional load loss characteristic isolate cutting power.
The specific filtering algorithm of the filter preprocessing uses the anti-impulse disturbances moving average filter algorithm of clipping, step
It is: is compared firstly, reading two data, if difference is greater than the threshold values of setting, abandons the two data, read again
It takes, until meeting threshold requirements；Then memory of the queue as measurement data is used, the length of queue is fixed as N, every progress
Measurement result, is put into tail of the queue by primary new measurement, and abandons a data of original head of the queue, is had always in such queue N number of
The data of " newest ";Then this N " newest " data are compared, pick out its maximum value and minimum value, ask this N
The sum of " newest " data, and from maximum value and minimum value is subtracted in, find out the arithmetic mean of instantaneous value of remaining N -2 data
And it is exported as signal virtual value.
Compared with prior art, present invention has the advantages that.
A kind of numerically-controlled machine tool efficiency on-line monitoring method disclosed in this invention, this method are based on machine power equilibrium equation
And energy dissipating characteristics, cutting power is isolated by real-time measurement lathe general supply input power and main shaft input power, from
And lathe energy efficiency is obtained online, while being based on power information online recognition conditions of machine tool, obtain machine tool utilization rate etc.
Information；This method includes that lathe power consumption state monitors in real time, lathe energy efficiency and capacity usage ratio calculate analysis, equipment utilization
The functions such as rate, equipment operation ratio and equipment operation utilization rate statistics.
Numerically-controlled machine tool efficiency on-line monitoring method of the invention, accuracy with higher and convenient practicability, for
Mechanical processing process and workshop energy efficiency evaluation, energy consumption prediction, energy management and Study on energy saving have important supporting function, have
There is wide application prospect.
Detailed description of the invention
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
The drawings and the specific embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment party described herein
Formula is only used to explain the present invention, is not intended to limit the present invention.
Fig. 1 is a kind of flow chart of numerically-controlled machine tool efficiency on-line monitoring method of the present invention.
Fig. 2 is that a kind of anti-impulse disturbances moving average filter of clipping of numerically-controlled machine tool efficiency on-line monitoring method of the present invention is calculated
Method flow chart.
Specific embodiment
In conjunction with shown in attached drawing 1, a kind of numerically-controlled machine tool efficiency on-line monitoring method of the present invention, it is characterised in that: by machine
Bed main motor at and general supply at installation power sensor, acquire power information in real time, utilize main transmission system of machine tool power
Equilibrium equation and additional load loss characteristic isolate cutting power online, obtain machine cut energy consumption, to realize to lathe
The analysis of the on-line monitoring of energy efficiency and utilization rate of equipment and installations；Lathe efficiency on-line monitoring method focuses on obtaining lathe online can
Become energy consumption: firstly, being filtered pretreatment, online recognition lathe operating status to the spindle power value obtained in real time；Then, it ties
It closes machine power equilibrium equation and additional load loss characteristic isolates cutting power.
The specific filtering algorithm of the filter preprocessing uses the anti-impulse disturbances moving average filter algorithm of clipping, step
It is: is compared firstly, reading two data, if difference is greater than the threshold values of setting, abandons the two data, read again
It takes, until meeting threshold requirements；Then memory of the queue as measurement data is used, the length of queue is fixed as N, every progress
Measurement result, is put into tail of the queue by primary new measurement, and abandons a data of original head of the queue, is had always in such queue N number of
The data of " newest ";Then this N " newest " data are compared, pick out its maximum value and minimum value, ask this N
The sum of " newest " data, and from maximum value and minimum value is subtracted in, find out the arithmetic mean of instantaneous value of remaining N -2 data
And it is exported as signal virtual value.The flow chart of the anti-impulse disturbances moving average filter algorithm of clipping, as shown in Figure 2.
It can be realized with the method without on-line measurement cutting force (or torque) and only by measurement main shaft input work
Rate indirect gain cuts energy consumption.After obtaining cutting energy consumption, according to lathe energy efficiency computation model online to lathe energy efficiency
It is assessed, while the online recognition based on lathe operating status, counts the runing time of each state of lathe, calculated lathe and set
The important informations such as standby utilization rate.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this
Technical solution described in inventive embodiments, those skilled in the art should understand that, still the present invention can be carried out
Modification or equivalent replacement, to reach identical technical effect；As long as meet use needs, all protection scope of the present invention it
It is interior.
Claims (2)
1. a kind of numerically-controlled machine tool efficiency on-line monitoring method, it is characterised in that: by lathe main motor and at general supply
Installation power sensor, acquires power information in real time, is lost using main transmission system of machine tool power balance equation and additional load
Characteristic isolates cutting power online, obtains machine cut energy consumption, to realize to lathe energy efficiency and utilization rate of equipment and installations
On-line monitoring analysis；Lathe efficiency on-line monitoring method focuses on obtaining the variable energy consumption of lathe online: firstly, obtaining to real-time
Spindle power value be filtered pretreatment, online recognition lathe operating status；Then, in conjunction with lathe power balance equation and attached
Load lotus loss characteristic isolates cutting power.
2. a kind of numerically-controlled machine tool efficiency on-line monitoring method according to claim 1, it is characterised in that: the pre- place of filtering
Reason specific filtering algorithm use the anti-impulse disturbances moving average filter algorithm of clipping, step is: firstly, read two data into
Row compares, if difference is greater than the threshold values of setting, abandons the two data, re-reads, until meeting threshold requirements；Then
Memory using queue as measurement data, the length of queue is fixed as N, every to carry out primary new measurement, measurement result
It is put into tail of the queue, and abandons a data of original head of the queue, there are N number of " newest " data in such queue always;Then to this N
A " newest " data are compared, and pick out its maximum value and minimum value, seek the sum of this N " newest " data, and subtract from in
Maximum value and minimum value are gone, the arithmetic mean of instantaneous value of remaining N -2 data is found out and is exported as signal virtual value.
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| CN201711048731.3A CN109725599A (en) | 2017-10-31 | 2017-10-31 | A kind of numerically-controlled machine tool efficiency on-line monitoring method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111266926A (en) * | 2020-03-20 | 2020-06-12 | 博深普锐高（上海）工具有限公司 | Method and system for accurately monitoring cutting power of machine tool spindle |
| CN113050541A (en) * | 2021-03-24 | 2021-06-29 | 武汉科技大学 | Numerical control machine tool energy consumption and processing state on-line monitoring system |
| CN113050542A (en) * | 2021-03-24 | 2021-06-29 | 武汉科技大学 | Method for distinguishing machining state of numerical control machine tool |
| CN113110292A (en) * | 2021-04-29 | 2021-07-13 | 浙江陀曼云计算有限公司 | Machine tool working state prediction method and system based on time sequence power data |
| CN113805533A (en) * | 2021-09-14 | 2021-12-17 | 南京林业大学 | Method and device for processing power signal of spindle of numerical control machine tool and electronic equipment |
-
2017
- 2017-10-31 CN CN201711048731.3A patent/CN109725599A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111266926A (en) * | 2020-03-20 | 2020-06-12 | 博深普锐高（上海）工具有限公司 | Method and system for accurately monitoring cutting power of machine tool spindle |
| CN113050541A (en) * | 2021-03-24 | 2021-06-29 | 武汉科技大学 | Numerical control machine tool energy consumption and processing state on-line monitoring system |
| CN113050542A (en) * | 2021-03-24 | 2021-06-29 | 武汉科技大学 | Method for distinguishing machining state of numerical control machine tool |
| CN113050541B (en) * | 2021-03-24 | 2023-04-28 | 武汉科技大学 | Online monitoring system for energy consumption and processing state of numerical control machine tool |
| CN113110292A (en) * | 2021-04-29 | 2021-07-13 | 浙江陀曼云计算有限公司 | Machine tool working state prediction method and system based on time sequence power data |
| CN113110292B (en) * | 2021-04-29 | 2022-03-18 | 浙江陀曼云计算有限公司 | Machine tool working state prediction method and system based on time sequence power data |
| CN113805533A (en) * | 2021-09-14 | 2021-12-17 | 南京林业大学 | Method and device for processing power signal of spindle of numerical control machine tool and electronic equipment |
| CN113805533B (en) * | 2021-09-14 | 2024-03-26 | 南京林业大学 | Processing method and device for spindle power signal of numerical control machine tool and electronic equipment |
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Application publication date: 20190507 |