CN108673241A - A kind of cutting stage numerically-controlled machine tool Calculation Method of Energy Consumption - Google Patents
A kind of cutting stage numerically-controlled machine tool Calculation Method of Energy Consumption Download PDFInfo
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- CN108673241A CN108673241A CN201810852347.7A CN201810852347A CN108673241A CN 108673241 A CN108673241 A CN 108673241A CN 201810852347 A CN201810852347 A CN 201810852347A CN 108673241 A CN108673241 A CN 108673241A
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Abstract
The present invention provides a kind of cutting stage numerically-controlled machine tool Calculation Method of Energy Consumption, using following steps：1）According to the relationship of numerical control machine tool cutting parameter and energy consumption, and consider influence of the tool wear to lathe energy consumption, establish numerical control machine tool cutting than can computation model, 2）Carry out numerical control cutting experiment, by power analyzer measures and calculate numerical control machine tool cutting than energy computation model in each undetermined coefficient, 3）Under cutter material, workpiece material, processing method same case, for one group of new technological parameter, first according to cutting parameter, tool abrasion, with step 1）Step 2）Obtained numerical control machine tool cutting calculates numerical control machine tool cutting than energy, then calculates cutting stage numerically-controlled machine tool energy consumption according to material removal volume than energy computation model.This method advantage is：Considered main shaft of numerical control machine tool no-load power consumption, the influence of tool abrasion calculates cutting stage numerically-controlled machine tool energy consumption, computational methods are simple, and computational accuracy is high.
Description
Technical field
The present invention relates to a kind of numerically-controlled machine tool Calculation Method of Energy Consumption, more particularly to a kind of cutting stage numerically-controlled machine tool energy consumption
Computational methods.
Background technology
Global energy crisis and climate warming situation are increasingly serious.Numerically-controlled machine tool is powerful, and energy-consuming parts are more, mainly
Including main axle servo drive system, feed shaft servo drive system, cooling and lubricating system, numerical control device and the parts PLC, Yi Jizhao
The auxiliary systems such as bright device, fan, chip removal system, tool changing device.It is extremely complex that numerically-controlled machine tool energy consumption is calculated based on machine tool component.
Work of numerical control machine process can be divided into cutting stage and non-cutting stage.Cutting stage numerically-controlled machine tool energy consumption only refers to
Numerically-controlled machine tool energy consumption in material removal process.The non-cutting stage after numerically-controlled machine tool booting includes tool changing, changes the auxiliary such as workpiece
Process.Therefore under the premise of ensureing processing quality, cutting stage numerically-controlled machine tool energy consumption is the smaller the better.
In the cutting stage, numerically-controlled machine tool energy consumption is known as numerical control machine tool cutting and compares energy when removing unit volume material.If
Know that numerical control machine tool cutting than energy, then can calculate and predict this time before digital control processing according to cutting parameter and material removal volume
Numerically-controlled machine tool energy consumption in cutting process.Kara et al. is in academic journal《CIRP Annals - Manufacturing
Technology》（1st phase in 2011：P37-40）On paper " the Unit process energy consumption that deliver
In models for material removal processes ", propose a kind of numerical control machine tool cutting than can empirical model Sec=
C0+C1/ MRR, wherein Sec are numerical control machine tool cutting ratio energy, and MRR is material removing rate, C0And C1It is constant.The empirical model does not have
Have and consider main shaft of numerical control machine tool no-load power consumption, does not account for influence of the tool wear to numerically-controlled machine tool energy consumption.
In conclusion how according to cutting parameter and tool abrasion, cutting stage numerical control machine is simply accurately calculated
Bed energy consumption, for research, how Optimizing Cutting Conditions have important directive significance to reduce lathe energy consumption, it has also become this field
Technical staff is badly in need of the technical issues of solving.
Invention content
The object of the present invention is to provide a kind of simple, accurate cutting stage numerically-controlled machine tool Calculation Method of Energy Consumption.Its technology
Scheme is：Using following steps：1）Establish numerical control machine tool cutting than can computation model, 2）It measures and calculates by power analyzer
Numerical control machine tool cutting than can each undetermined coefficient in computation model, 3）In cutter material, workpiece material, processing method same case
Under, according to cutting parameter, tool abrasion, calculate cutting stage numerically-controlled machine tool energy consumption.
It is characterized in that：
Step 1）In, stage numerical control machine power P will be cuttotalIt is divided into standby power Pidle, cutting material power Pcutting, it is main
Axis no-load power Psno, and have：
Pcutting=k0*MRR*(1+VB) (1)
Wherein, k0It is related with workpiece material, cutter material for constant；VB is tool abrasion；MRR is material removing rate.
Psno=S*n+C (2)
Wherein, n is main shaft of numerical control machine tool rotating speed；S and C is coefficient.Then
Ptotal=Pidle+Pcutting+Psno= Pidle+k0*MRR*(1+VB)+S*n+C (3)
Machine cut is then digitally controlled than energy Sec：
Sec= Ptotal/MRR=k0*(1+VB)+S*n/MRR+(Pidle+C)/MRR= k0*(1+VB)+k1*n/MRR+k2/MRR (4)
Wherein k0、k1And k2It is undetermined coefficient.
Step 2）In, it is measured by power analyzer and calculates numerical control machine tool cutting than each system undetermined in energy computation model
Number carries out numerical control cutting experiment after cutter material, workpiece material, processing method determine：
For each machining, is measured using power analyzer in numerically-controlled machine tool power inleting terminal and tied to cutting since cutting
Numerically-controlled machine tool energy consumption E when beam obtains numerically-controlled machine tool in the secondary machining by numerically-controlled machine tool energy consumption E and material removal volume Q and cuts
It cuts than energy Sec=E/Q；
For each machining, before processing with cutter tool flank wear is measured after processing respectively, be averaged as this
Tool abrasion VB in secondary machining；According to back engagement of the cutting edge ap, working engagement of the cutting edge ae, feed speed F calculate material removing rate MRR=
ap*ae*F。
It chooses 13 groups or more cutting parameters and carries out cutting experiment, tool abrasion VB, material removing rate MRR, main shaft are turned
Fast n and numerical control machine tool cutting substitute into formula than energy Sec（4）An over-determined systems are obtained, are waited for based on least square method calculating
Determine coefficient k0、k1And k2。
Step 3）In, under cutter material, workpiece material, processing method same case, for one group of new technological parameter,
First according to cutting parameter, tool abrasion, with step 1）Step 2）Obtained numerical control machine tool cutting is than energy computation model, meter
Numerical control machine tool cutting is calculated than energy Sec, cutting stage numerically-controlled machine tool energy consumption E=Sec*Q is then calculated according to material removal volume Q.
The present invention compared with the conventional method, its advantage is that：Main shaft of numerical control machine tool no-load power consumption, tool wear are considered
The influence of amount calculates cutting stage numerically-controlled machine tool energy consumption, and computational methods are simple, and computational accuracy is high.
Description of the drawings
Fig. 1 is the cutting stage numerically-controlled machine tool energy consumption calculation flow chart of the present invention.
Fig. 2 is the numerical control machine tool cutting of the present invention than undetermined coefficient calculation flow chart in energy computation model.
Specific implementation mode
The present invention is described in further detail with reference to Fig. 1 Fig. 2.
Step 1）In, according to the relationship of numerical control machine tool cutting parameter and energy consumption, and consider tool wear to lathe energy consumption
It influences, establishes numerical control machine tool cutting than energy computation model：
Sec=k0*(1+VB)+k1*n/MRR+k2/MRR (5)
Wherein, Sec is that numerical control machine tool cutting compares energy；VB is tool abrasion；N is main shaft of numerical control machine tool rotating speed；MRR is that material is gone
Except rate；k0、k1And k2It is undetermined coefficient.
Step 2）In, it is measured by power analyzer and calculates numerical control machine tool cutting than each system undetermined in energy computation model
Number carries out numerical control cutting experiment after cutter material, workpiece material, processing method determine：
For each machining, is measured using power analyzer in numerically-controlled machine tool power inleting terminal and tied to cutting since cutting
Numerically-controlled machine tool energy consumption E when beam obtains numerically-controlled machine tool in the secondary machining by numerically-controlled machine tool energy consumption E and material removal volume Q and cuts
It cuts than energy Sec=E/Q.
For each machining, before processing with cutter tool flank wear is measured after processing respectively, be averaged work
For tool abrasion VB in the secondary machining；According to back engagement of the cutting edge ap, working engagement of the cutting edge ae, feed speed F calculate material removing rate
MRR=ap*ae*F。
It chooses 13 groups or more cutting parameters and carries out cutting experiment, tool abrasion VB, material removing rate MRR, main shaft are turned
Fast n and numerical control machine tool cutting substitute into formula than energy Sec（5）An over-determined systems are obtained, are waited for based on least square method calculating
Determine coefficient k0、k1And k2。
Step 3）In, under cutter material, workpiece material, processing method same case, for one group of new technological parameter,
First according to cutting parameter, tool abrasion, with step 1）Step 2）Obtained numerical control machine tool cutting is than energy computation model, meter
Numerical control machine tool cutting is calculated than energy Sec, cutting stage numerically-controlled machine tool energy consumption E=Sec*Q is then calculated according to material removal volume Q.
The present invention is realized in XD-40A vertical numerical control milling machines.Milling workpiece used be 45# steel rectangular blocks 200mm ×
150mm × 60mm, cutter is the carbide end mill of diameter 20mm, using WT1800 power analyzers.14 times have been carried out to put down
Facing cut cuts experiment, measures milling cutter tool flank wear respectively before being processed in experiment every time and after processing, is averaged as this time
Cutter wear amount VB in milling experiment.In each milling experiment, surveyed using power analyzer in numerically-controlled machine tool power inleting terminal
Go out since cutting to cutting at the end of in numerically-controlled machine tool energy consumption divided by this milling material removal volume be digitally controlled lathe and cut
It cuts than energy.Cutting parameter, tool abrasion and numerical control machine tool cutting are more as shown in table 1 than energy in experiment.
1 milling test of table and the tool abrasion of actual measurement, numerical control machine tool cutting compare energy
14 groups of data in table 1 are substituted into formula（5）An over-determined systems are obtained, undetermined coefficient is found out based on least square method
For：k0=5.0, k1=5.0, k2=48195.Then numerical control machine tool cutting is than energy computation model：
Sec=5.0*(1+VB)+5.0*n/MRR+48195/MRR (6)
Under cutter material, workpiece material, processing method same case, the cutting stage is verified with one group of new cutting parameter
The validity of numerically-controlled machine tool Calculation Method of Energy Consumption, as shown in table 2.When milling layer of material, material removal volume Q=1*200*150
=30000 mm3.Use formula（6）The numerical control machine tool cutting ratio of calculating can be 21.85 J/mm3, the cutting stage numerically-controlled machine tool of calculating
Energy consumption is 655.5KJ；It can be 21.76 J/mm to survey numerical control machine tool cutting ratio3, the cutting stage numerically-controlled machine tool energy consumption of actual measurement is
652.8KJ.Cutting stage numerically-controlled machine tool energy consumption calculation precision is 99.6%.
Verification test of the table 2 to established cutting stage numerically-controlled machine tool Calculation Method of Energy Consumption
The present invention has considered main shaft of numerical control machine tool no-load power consumption, the influence of tool abrasion calculates cutting stage numerical control machine
Bed energy consumption, computational methods are simple, and computational accuracy is high.The invention content contributes to various numerical control devices to select energy-efficient processing ginseng
Number reduces lathe energy consumption.
Claims (1)
1. a kind of cutting stage numerically-controlled machine tool Calculation Method of Energy Consumption, using following steps：1）Establishing numerical control machine tool cutting ratio can count
Calculation model, 2）Measured by power analyzer and calculate numerical control machine tool cutting than can each undetermined coefficient in computation model, 3）In knife
Have under material, workpiece material, processing method same case, according to cutting parameter, tool abrasion, calculates cutting stage numerical control machine
Bed energy consumption, it is characterised in that：
Step 1）In, according to the relationship of numerical control machine tool cutting parameter and energy consumption, and consider influence of the tool wear to lathe energy consumption,
Numerical control machine tool cutting is established than energy computation model：
Sec=k0*(1+VB)+k1*n/MRR+k2/MRR （1）
Wherein, Sec is that numerical control machine tool cutting compares energy；VB is tool abrasion；N is main shaft of numerical control machine tool rotating speed；MRR is that material is gone
Except rate；k0、k1And k2It is undetermined coefficient；
Step 2）In, measured by power analyzer and calculate numerical control machine tool cutting than can each undetermined coefficient in computation model,
After cutter material, workpiece material, processing method determine, numerical control cutting experiment is carried out：
For each machining, is measured using power analyzer in numerically-controlled machine tool power inleting terminal and tied to cutting since cutting
Numerically-controlled machine tool energy consumption E when beam obtains numerically-controlled machine tool in the secondary machining by numerically-controlled machine tool energy consumption E and material removal volume Q and cuts
It cuts than energy Sec=E/Q；
For each machining, before processing with cutter tool flank wear is measured after processing respectively, be averaged as this
Tool abrasion VB in secondary machining；According to back engagement of the cutting edge ap, working engagement of the cutting edge ae, feed speed F calculate material removing rate MRR=
ap*ae*F；
Choose 13 groups or more cutting parameters and carry out cutting experiments, by tool abrasion VB, material removing rate MRR, speed of mainshaft n with
And numerical control machine tool cutting substitutes into formula than energy Sec（1）An over-determined systems are obtained, system undetermined is calculated based on least square method
Number k0、k1And k2；
Step 3）In, under cutter material, workpiece material, processing method same case, for one group of new technological parameter, first
According to cutting parameter, tool abrasion, with step 1）Step 2）Obtained numerical control machine tool cutting calculates number than energy computation model
Machine cut is controlled than energy Sec, cutting stage numerically-controlled machine tool energy consumption E=Sec*Q is then calculated according to material removal volume Q.
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| CN109800541A (en) * | 2019-03-04 | 2019-05-24 | 山东理工大学 | Only material is removed when a kind of cylindrical turning than energy calculation method |
| CN109902448A (en) * | 2019-04-24 | 2019-06-18 | 西北工业大学 | Consider the machine tooling process energy consumption model modeling method of tool wear |
| CN110449992A (en) * | 2018-05-07 | 2019-11-15 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | The method for calculating turning power based on unit cutting energy coefficient |
| CN110560921A (en) * | 2019-08-22 | 2019-12-13 | 浙江科技学院 | total energy consumption prediction method for laser cutting based on shortest distance |
| CN113601265A (en) * | 2021-09-01 | 2021-11-05 | 重庆科技学院 | Method for estimating energy consumption ratio of front tool face and rear tool face of cutter in machining |
| CN115365890A (en) * | 2022-09-23 | 2022-11-22 | 深圳职业技术学院 | Method and device for online predicting tool wear value, intelligent terminal and storage medium |
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| CN110449992A (en) * | 2018-05-07 | 2019-11-15 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | The method for calculating turning power based on unit cutting energy coefficient |
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| CN109902448A (en) * | 2019-04-24 | 2019-06-18 | 西北工业大学 | Consider the machine tooling process energy consumption model modeling method of tool wear |
| CN109902448B (en) * | 2019-04-24 | 2022-05-17 | 西北工业大学 | Machine tool machining process energy consumption model modeling method considering cutter abrasion |
| CN110560921A (en) * | 2019-08-22 | 2019-12-13 | 浙江科技学院 | total energy consumption prediction method for laser cutting based on shortest distance |
| CN113601265A (en) * | 2021-09-01 | 2021-11-05 | 重庆科技学院 | Method for estimating energy consumption ratio of front tool face and rear tool face of cutter in machining |
| CN115365890A (en) * | 2022-09-23 | 2022-11-22 | 深圳职业技术学院 | Method and device for online predicting tool wear value, intelligent terminal and storage medium |
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