CN106054803B - A kind of thermophilic cutting real-time control method of composite material - Google Patents
A kind of thermophilic cutting real-time control method of composite material Download PDFInfo
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- CN106054803B CN106054803B CN201610382979.2A CN201610382979A CN106054803B CN 106054803 B CN106054803 B CN 106054803B CN 201610382979 A CN201610382979 A CN 201610382979A CN 106054803 B CN106054803 B CN 106054803B
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- 238000005520 cutting process Methods 0.000 title claims abstract description 91
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000006073 displacement reaction Methods 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 12
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007921 spray Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000003754 machining Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
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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—Programme-control systems
- G05B19/02—Programme-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 programme data in numerical form
- G05B19/401—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 programme data in numerical form characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
- G05B19/4015—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 programme data in numerical form characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes going to a reference at the beginning of machine cycle, e.g. for calibration
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Temperature (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
A kind of thermophilic cutting real-time control method of composite material of the present invention belongs to composites processing technology field, and in particular to a kind of thermophilic cutting real-time control method of composite material.This method first builds the thermophilic cutting real-time control system of composite material, then sprays ultralow temperature gas to cutting region with atomizer.On the basis of reducing cutting temperature, by the thermocouple real-time measurement cutting region temperature near workpiece cutting region, and cutting region temperature feedback is given to displacement platform controller.Carry out to adjust the atomizer being mounted on displacement platform as signal in real time at a distance from cutting section, the temperature for adjusting cutting region is in desired value, realizes that material is cut in suitable temperature range, to obtain optimal machined surface quality.The method achieve the temperature for directly controlling cutting region, temperature adjustment speed is very fast, can guarantee temperature controlled high efficiency and accuracy.It is directly adjusted in open space, more suitable for production application.
Description
Technical field
The invention belongs to composites processing technology fields, and in particular to a kind of thermophilic cutting real-time control of composite material
Method.
Background technique
In material machining, due to the friction between the machining deformation of material, removal and material and cutter, cutting region can be produced
Raw a large amount of heat, and cause cutting region temperature very high, and in general the processability of material, performance of cutter etc. vary with temperature
Very big, therefore, the temperature of cutting region is an important factor for influencing machining quality, tool wear form and degree.Some difficulties
Rapidoprint such as carbon fibre reinforced composite thermal conductivity itself and substrate glass conversion temperature are low, using traditional processing side
Formula, cutting zone temperature is very high, easily causes thermal damage, greatly reduces the strength of materials and processing rear surface quality；When use exists
When processing under extremely low temperature, since resin matrix itself hardens, cutting force is caused to significantly increase, tool wear aggravation leads to frequency
Numerous tool changing, processing efficiency is low, thus it is increasingly important to realize that cutting region temperature effectively controls.Currently, sub-cooled processing be on
The main processing method of difficult-to-machine material is stated, and uses ultralow temperature gas, is most wide in recent years as liquid nitrogen vapor carries out cooling
The type of cooling of general use, but use the gas-cooled mode of ultralow temperature, since gas temperature is extremely low, as liquid nitrogen vapor close to-
196 DEG C, it is difficult to control its injection flow and pressure, the temperature of cutting zone is difficult to control.Zeng Xiangyu, Meng Xiangmin have invented " one
Kind temperature-controllable cold cooling unit " patent, Patent No. CA103707124A.The device is using the cooling thermal conductivity of liquid nitrogen vaporization
The good heat transfer member of energy, and then cooling machined material, the temperature of machined material are acquired by temperature sensor, to control
Liquid nitrogen container processed stablizes whole cooling temperature relative to the displacement of heat transfer member and the heats power of heating unit n.It should
Method needs heat transfer member to carry out heat transfer, and cooling velocity is slow, is difficult to realize temperature real-time monitoring.Zhang Zhaoming, Wang Yisi etc.
" cooling device for cutting process " patent is illustrated in human hair, and Patent No. CA1012009528A, the patent is by existing liquid nitrogen and air
Gas mixer chamber mixing, and liquid nitrogen and air mixture ratio are controlled using temperature sensor measurement gas mixing room temperature, from
And realize the temperature control of ejiction opening.The temperature of cutting region can not be directly controlled using this method, and temperature the temperature inside the box determines
Afterwards, then further regulated and controled, speed is slower, is unable to real time temperature control, is unable to satisfy the demand that cutting is adjusted in real time.Section
Yu Gang, Wang Hongxiao et al. invention " a kind of resin base fiber reinforced composite material low temperature drilling machining device and method " patent,
Patent No. CN104260143.The environment temperature when patent adjusts processing by low temperature cooling device and temperature control equipment-
Between 80 DEG C and 0 DEG C, cutting force measurement device measurement cutting force is used to assess the best low temperature drilling parameter of adjustment.This method is only
Environment temperature when processing is controlled, the temperature of cutting region can not be directly controlled, and temperature adjustment speed is slower.
Summary of the invention
The invention solves technical problem be to solve the application limitation of the prior art, invent a kind of the suitable of composite material
Temperature cutting real-time control method, this method cuts real-time control system by building the thermophilic of composite material, using atomizer
Ultralow temperature gas is sprayed to cutting region, reduces cutting temperature, by adjusting atomizer at a distance from cutting region, computer is real-time
Cutting region temperature is monitored, realizes the temperature for directly controlling cutting region, temperature adjustment speed is very fast.
The technical solution adopted by the present invention is that a kind of thermophilic of composite material cuts real-time control method, characterized in that should
Method first builds the thermophilic cutting real-time control system of composite material, sprays ultralow temperature gas to cutting region using atomizer,
On the basis of reducing cutting temperature, by the thermocouple real-time measurement cutting region temperature near workpiece cutting region, and will cutting
Area's temperature feedback gives displacement platform controller, adjusts the atomizer being mounted on displacement platform in real time as signal and cuts
The distance for cutting section, the temperature for adjusting cutting region are in desired value, realize that material is cut in suitable temperature range, with
To optimal machined surface quality；Specific step is as follows for method:
The first step builds the thermophilic cutting real-time control system of composite material
Clamping device 2 is mounted on numerically controlled machine 1, composite material 7 is fixed in clamping device 2, temperature inspection
The signal output end for surveying module 3 will test result by data line and be output in computer 4, the other end of temperature detecting module 3
It is connect with thermocouple 8；5 one end of temperature control modules is connect with computer 4, and the other end is connect with displacement platform 9；It is mounted on compound
8 working end of thermocouple on material 7 is located at composite material 7 and 6 contact area of cutter, 8 cold end of thermocouple and temperature detecting module 3
Connection；The outlet of ultralow temperature cold air generator 13 is connected with gas pipeline 12, and the other end of gas pipeline 12 is connected with atomization spray
Mouth 11, atomizer 11 are connected on displacement platform 9 by supporter 10, and atomizer 11 is directed toward cutting zone, cutting region with
Distance is d between atomizer 11；
Second step opens computer 4, initializes each device first, and set set temperature value t required by cutting region0；
Start-up temperature measurement and cooling equipment, are pre-chilled cutting region, control the temperature of cutting region close to set temperature value t0；
Third step starts numerically-controlled machine tool, processes to composite material 7, sets the value of cutting parameter；
The Current Temperatures t of 4th step real-time measurement cutting region, compares current temperature value t and set temperature value t0If worked as
Preceding temperature value t and set temperature value t0Close, difference DELTA t is less than or equal to 20 DEG C, then displacement platform 9 is motionless, if current temperature
Angle value t and set temperature value t0Differ larger, the absolute value of difference DELTA t is greater than 20 DEG C, then with current temperature value t and setting temperature
Angle value t0Difference Δ t command displacement platform 9 movement: as Δ t > 0, displacement platform 9 drive atomizer 11 to close to cutting
Area direction is mobile；As Δ t < 0, displacement platform 9 drives atomizer 11 to far from the movement of cutting region direction.By anti-in real time
The temperature parameter of feedback, constantly quickly distance d between adjustment cutting region and atomizer 11, until the temperature of cutting region reaches setting temperature
Angle value t0。
The beneficial effects of the invention are as follows thermocouple working ends to be located at composite material and tool contact area, directly detection cutting
The temperature in area.Temperature is controlled by spraying the distance of gas, can be realized the real-time quick adjusting of cutting region temperature, computer
Real-time monitoring cutting region temperature, feeds back to the connected control module of computer, and adjustment atomizer makes at a distance from cutting section
It obtains cutting region temperature and reaches given range, can guarantee temperature controlled high efficiency and accuracy.It is directly carried out in open space
It adjusts, more suitable for production application.
Detailed description of the invention
Fig. 1 is that the thermophilic of composite material cuts real-time control system figure.In figure, 1- numerically controlled machine；2- clamping machine
Structure；3- temperature detecting module；4- computer；5- temperature control modules；6- cutter；7- composite material；8- thermocouple；9- displacement is flat
Platform；10- supporter；11- atomizer；12- gas pipeline；13- ultralow temperature cold air generator；Between the cutting region d- and atomizer
Distance.
Specific embodiment
Implementation of the invention is further described in detail with technical solution with reference to the accompanying drawing.
Referring to Fig. 1, the present invention uses thermocouple 8 for temperature-detecting device, and ultralow temperature cold air generator 12 is used as temperature control
Device processed.The signal output end of temperature-detecting device will test result by data line and be output in computer 4, and computer 4 is logical
It crosses data line and is input to temperature control equipment input terminal, real-time measure and control temperature for data are controlled.The specific steps of method are such as
Under:
The first step builds the thermophilic cutting real-time control system of composite material
Clamping device 2 is mounted on numerically controlled machine 1, composite material 7 is fixed in clamping device 2, compound
Thermocouple 8 is installed, 8 working end of thermocouple is located at composite material 7 and 6 contact area of cutter, 8 cold end of thermocouple and temperature on material 7
It spends detection module 3 to connect, the other end of temperature detecting module 3 is connect with computer 4；The outlet of ultralow temperature cold air generator 13 connects
It is connected to gas pipeline 12, the other end of gas pipeline 12 is connected with atomizer 11, and atomizer 11 is connected by supporter 10
On displacement platform 9, atomizer 11 is directed toward cutting zone, and distance is d between cutting region and atomizer 11；
Second step opens computer 4, initializes each device first, set temperature value t required by cutting region0It is -50 DEG C
To -25 DEG C；Start-up temperature measurement and cooling equipment, are pre-chilled cutting region, keep the current temperature value t for controlling cutting region close
Set temperature value t0；
Third step starts numerically-controlled machine tool, carries out Milling Process, cutting speed 314m/min, feeding speed to composite material 7
Degree is 50mm/min, cutting-in 0.3mm；
The Current Temperatures of 4th pacing amount cutting region are 135 DEG C, compare cutting region Current Temperatures and set temperature value t0, when
Preceding temperature value and set temperature value are unequal, with the movement of the difference Δ t command displacement platform of current temperature value and set temperature value:
Δ t > 0, displacement platform is to close to the movement of cutting region direction；By the temperature parameter of Real-time Feedback, nozzle position is constantly quickly adjusted
It moves, until reaching cutting region temperature is set temperature value t when displacement platform and cutting region spacing d are 20mm0。
This method utilizes computer real-time monitoring cutting region temperature, is directly adjusted in open space, more suitable for reality
Border production application.
Claims (1)
1. a kind of thermophilic of composite material cuts real-time control method, characterized in that this method first builds the thermophilic of composite material
Real-time control system is cut, ultralow temperature gas is sprayed to cutting region using atomizer, on the basis of reducing cutting temperature, is led to
The thermocouple real-time measurement cutting region temperature near workpiece cutting region is crossed, and cutting region temperature feedback is controlled to displacement platform
Device carrys out to adjust the atomizer being mounted on displacement platform in real time at a distance from cutting section as signal, adjusts cutting region
Temperature be in desired value, realize that material is cut in suitable temperature range, to obtain optimal machined surface quality, side
Specific step is as follows for method:
The first step builds the thermophilic cutting real-time control system of composite material
Clamping device (2) is mounted on numerically controlled machine (1), composite material (7) is fixed in clamping device (2), temperature
The signal output end of degree detection module (3) will test result by data line and be output in computer (4), temperature detecting module
(3) the other end is connect with thermocouple (8)；Temperature control modules (5) one end is connect with computer (4), and the other end and displacement are flat
Platform (9) connection；Thermocouple (8) working end being mounted on composite material (7) is located at composite material (7) and cutter (6) contact zone
Domain, thermocouple (8) cold end are connect with temperature detecting module (3)；The outlet of ultralow temperature cold air generator (13) is connected with appendix
Road (12), the other end of gas pipeline (12) are connected with atomizer (11), and atomizer (11) is connected by supporter (10)
On displacement platform (9), atomizer (11) is directed toward cutting zone, and distance is (d) between cutting region and atomizer (11)；
Second step opens computer (4), initializes each device first, and set required cutting region set temperature value t0；It opens
Dynamic temperature measurement and cooling equipment, are pre-chilled cutting region, control the temperature of cutting region close to set temperature value；
Third step starts numerically-controlled machine tool, processes to composite material (7), sets the value of cutting parameter；
The Current Temperatures t of 4th step real-time measurement cutting region, compares Current Temperatures t and set temperature value t0If Current Temperatures
Value t and set temperature value t0Close, the absolute value delta t of difference is less than or equal to 20 DEG C, then displacement platform (9) is motionless, if worked as
Preceding temperature value t and set temperature value t0Differ larger, the absolute value of difference DELTA t is greater than 20 DEG C, then with current temperature value t and sets
Determine temperature value t0Difference Δ t command displacement platform (9) movement: as Δ t > 0, displacement platform (9) drive atomizer (11)
To close to the movement of cutting region direction；As Δ t < 0, displacement platform (9) drives atomizer (11) to move to far from cutting region direction
It is dynamic；By the temperature parameter of Real-time Feedback, distance (d) between cutting region and atomizer (11) is constantly quickly adjusted, until cutting
The temperature in area reaches set temperature value t0。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6904990B2 (en) * | 2019-02-07 | 2021-07-21 | ファナック株式会社 | Management device and management system |
| JP6908645B2 (en) * | 2019-03-04 | 2021-07-28 | ファナック株式会社 | Management device and management system |
| CN110058621B (en) * | 2019-04-17 | 2020-09-29 | 大连理工大学 | Liquid nitrogen injection amount on-line control method for ultralow temperature cooling processing |
| CN114799057A (en) * | 2022-05-23 | 2022-07-29 | 南京航空航天大学 | Temperature feedback control device and method for numerical control forming of frozen sand mold |
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