CN109967809A - A kind of detection of Wire EDM wire electrode tension and LCD image display device - Google Patents
A kind of detection of Wire EDM wire electrode tension and LCD image display device Download PDFInfo
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- CN109967809A CN109967809A CN201910280564.8A CN201910280564A CN109967809A CN 109967809 A CN109967809 A CN 109967809A CN 201910280564 A CN201910280564 A CN 201910280564A CN 109967809 A CN109967809 A CN 109967809A
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- tension
- wire
- image
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- lcd
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
- B23H7/08—Wire electrodes
- B23H7/10—Supporting, winding or electrical connection of wire-electrode
- B23H7/104—Wire tension control
Abstract
The present invention discloses a kind of detection of Wire EDM wire electrode tension and LCD image display device, it includes that DC power supply, control module, A/D module, strain pressure transducer, SD card module and LCD display, DC power supply are connected with control module；Control module, A/D module and strain pressure transducer are sequentially connected to form a sample circuit；Strain pressure transducer is used for the analog quantity of detecting electrode thread tension size, is converted to digital quantity by A/D module；Control module is for calculating the relationship of digital quantity and actual tension value after receiving digital quantity and being corrected, and pass through the processing of internal algorithm program, the image and numerical values recited that real-time display tension changes over time on LCD display on this basis (including real-time strain and preceding n seconds of tension force mean value)；SD card module is for periodically saving tension value.The device real-time detection wire electrode tension size and can be showed variation tendency by way of image.
Description
Technical field
The present invention relates to Wire-cut Electrical Discharge Machining technical field, especially a kind of Wire EDM wire electrode tension inspection
Survey and LCD image display device.
Background technique
The basic functional principle of Electric Discharge Wire-cutting Technology is made using the fine wire (referred to as wire electrode) of continuous moving
Electrode carries out pulse spark electric discharge removal metal, excision forming to workpiece.Its characteristics are as follows:
(1) significant machine cut power is not present in processing, regardless of workpiece hardness and rigidity, as long as conduction or half
Conductive material can be processed, but can not machining of non-metallic conductive material.
(2) can be with machining small and complicated shape part, but it can not processing blind hole.
(3) electronic wire loss is small, and machining accuracy is high.
(4) joint-cutting generated when processing is narrow, and metal ablation amount is few, is conducive to the recycling of material.
In order to improve the stationarity of Wire EDM wire electrode movement, it usually needs apply tensile force to it.Tensile force
Size and tensioning mode processing quality, efficiency and fracture of wire are all had a major impact.
In order to improve processing quality and efficiency, the tension that workpiece and wire electrode need to keep constant in process.It passes
The electric spark linear cutting machine of system is that tension detecting apparatus, the tension of wire electrode are not in continuous in process
The state of variation, therefore the surface quality of institute's workpieces processing and processing efficiency will be affected.
In order to effectively avoid fracture of wire, real-time monitoring must be carried out to the Tensity size of wire electrode and kept away with making corresponding measure
Exempt from fracture of wire phenomenon.
In view of the above problems, a kind of device is needed to be measured in real time the tension of wire electrode, while can be to detecting
Tension carry out relevant treatment and intuitively showed by image, be conducive to the subsequent tension to wire electrode during wire transporting into
Row control, can be in the tensioning state of stable equilibrium with constant tension, improve processing quality, reduce fracture of wire probability,
Improve the service life of processing efficiency and wire electrode.
Summary of the invention
It cannot achieve the defect of detecting electrode thread tension to solve general traditional wire cutting machine tool, the present invention provides one kind and answers
The Wire EDM wire electrode tension based on STM32 for Wire-cut Electrical Discharge Machining detects and LCD image display device,
It may be implemented to be measured in real time the Tensity size of wire electrode using the device and be in by variation tendency by way of image
Reveal come, thus to understand processing situation and in time adjust be it is highly beneficial, provided for subsequent raising processing stability
Foundation.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of detection of Wire EDM wire electrode tension and LCD image display device, it includes DC power supply, control mould
Block, A/D module and strain pressure transducer, DC power supply are connected with control module；Control module, A/D module and strain-type pressure
Force snesor is sequentially connected to form a sample circuit；Strain pressure transducer is for detecting wire electrode tension during wire transporting
The analog quantity of size, and analog quantity is passed into A/D module；A/D module will after being used for the analog quantity of receiving electrode thread tension size
Analog quantity is converted to digital quantity, and digital transfer is handled to control module；Control module is for after receiving digital quantity
It calculates the relationship of digital quantity and actual tension value and is corrected.
Further, it further includes LCD display, and the tension value after correction is passed through internal algorithm program by control module
Processing, the image and numerical values recited that real-time display tension changes over time on LCD display include real-time strain and n seconds first
Tension force mean value.The processing shape of programming real-time display tension value on LCD display by way of image in the control module
Formula keeps the variation tendency of tension more simple and clear.
Further, it further includes SD card module, and SD card module stores detected tension value for timing, to be used for
Further data analysis and process.
Further, control module is ARM controller, by its inside programming complete wire electrode tension AD value sampling,
The calculating of tension and control Real-time image display.
Further, preceding n seconds tension force mean value algorithms of control module inside programming use approximate solution.Such as: ask every
100s tension force mean value before one moment, then 101s average value=100s average value × 99%+ 101s tension value × 1%,
The algorithm is few using variable, and the program space of occupancy is smaller, is particularly suitable for prolonged sequential operation.
Further, preceding n seconds tension force mean value acquires according to the following formula:
Further, it is fixed with electrode-wire wheel on strain pressure transducer, is wound with wire electric discharge on electrode-wire wheel
Cutting electrode silk, the upper and lower surface of strain pressure transducer post resistance strain gage, on Wire EDM wire electrode
Power F acts on the force side of strain pressure transducer by electrode-wire wheel, and strain pressure transducer stress is deformed,
Resistance strain gage stress above it stretches, and resistance strain gage forced compression below is converted to resistance variations, passes through measurement
Circuit is converted to relevant voltage variation, analog quantity is converted to digital quantity by A/D module, then can be obtained and surveyed by conversion
The size of tension.
Further, control module includes power switch, the button cell with power-down protection, extends out pin, ARM
Master chip, the first LCD display wiring pin and manual correction button, power switch are connect with DC power supply, are control module
Power supply, extends out pin and connect with A/D module, sends the digital quantity that A/D module converts to ARM master chip, passes through internal algorithm journey
Sequence is converted into Wire EDM wire electrode actual tension size, and shows on LCD display in the form of images, the
One LCD display wiring pin is connect to show image with corresponding pin on LCD display, manual correction button by press into
Row correction.
Further, LCD display includes the second LCD display wiring pin, rectangular coordinate system, real-time tension value numerical value
With 100s tension force mean value numerical value and change before 10s tension force mean value numerical value before modified-image, current point and modified-image, current point
Change image, LCD display is connect with control module by the second LCD display wiring pin with dynamic display image, and right angle is sat
The X-axis of mark system is time change axis, and the Y-axis of rectangular coordinate system is tension variation axis, Dynamically Announce real-time tension value numerical value and change
Change image, 100s tension force mean value numerical value and change before 10s tension force mean value numerical value and modified-image and current point before current point
Change image, the content that previous screen is covered after a screen image has been shown continues to show present image.
The utility model has the advantages that
1. overcoming traditional electric spark linear cutting machine can not detecting electrode the present invention is based on wire electrode tension detection technique
The difficulty of thread tension.
2. the present invention use wire electrode tension multicycle LCD image display methods, output pattern stablize, respond it is sensitive and
Detection cycle is adjustable, can detecte preceding n seconds tension force mean value and by LCD display real-time display.
3. the wire electrode tension detection method that the present invention uses, may be directly applied to traditional electric spark linear cutting machine,
And the servo-control system for cutting processing without influencing lathe itself, it is able to achieve and the tension of wire electrode is supervised in real time
It surveys.
4. SD card module of the invention can periodically be stored detected wire electrode tension value and be exported with document form
To be handled for further analysis.
5. the present invention is applied widely, it is applicable not only to electric spark linear cutting machine, needs to use tension inspection for other
The equipment of survey stands good.
Detailed description of the invention
Fig. 1 is the structural block diagram of Wire EDM wire electrode tension detection of the present invention and LCD image display device；
Fig. 2 is the structural schematic diagram of Wire EDM wire electrode tension detection of the present invention and LCD image display device；
Fig. 3 is the detection schematic diagram of Wire EDM wire electrode tension detection of the present invention and LCD image display device；
Fig. 4 is Wire EDM wire electrode tension detection of the present invention and the control module signal of LCD image display device
Figure；
Fig. 5 is Wire EDM wire electrode tension detection of the present invention and the LCD display signal of LCD image display device
Figure；
In figure: 1- DC power supply, 2- control module, 21- power switch, 22- button cell, 23- extend out pin, 24-ARM
Master chip, the first LCD display of 25- wiring pin, 26- manual correction button, 3-AD module, 4- strain pressure transducer,
5-SD card module, 6-LCD display screen, the second LCD display of 61- wiring pin, 62- rectangular coordinate system, 63- real-time tension value number
Value and 100s tension force mean value before 10s tension force mean value numerical value before modified-image, 64- current point and modified-image, 65- current point
Numerical value and modified-image, 7- electrode-wire wheel, 8- Wire EDM wire electrode, 9- resistance strain gage.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
The present invention proposes a kind of detection of Wire EDM wire electrode tension and LCD image display device, such as Fig. 1 and Fig. 2
Shown, it includes DC power supply 1, control module 2, A/D module 3, strain pressure transducer 4, SD card module 5 and LCD display
6, DC power supply 1 is connected with control module 2；Control module 2, A/D module 3 and strain pressure transducer 4 are sequentially connected to form one
A sample circuit；Strain pressure transducer 4 is used to detect the analog quantity of wire electrode tension size during wire transporting, and will simulation
Amount passes to A/D module 3；A/D module 3 is used to that analog quantity to be converted to digital quantity after the analog quantity of receiving electrode thread tension size,
And digital transfer is handled to control module 2；Control module 2 is for calculating digital quantity and reality after receiving digital quantity
The relationship of tension value is simultaneously corrected, and passes through the processing of internal algorithm program on this basis, on LCD display 6 in real time
The image and numerical values recited that display tension changes over time (including real-time strain and preceding n seconds of tension force mean value)；SD card module 5
Detected tension value is stored for timing.
In the above-mentioned technical solutions, using pressure signal as sampled signal, pass through control module 2, A/D module 3 and strain-type pressure
Force snesor 4 is sequentially connected the sample circuit to be formed and is acquired calculating acquisition pressure mould analog quantity to pressure during the sampling period
Size, wherein the size of pressure mould analog quantity refers to that pressure change leads to 9 resistance value of resistance strain gage of strain pressure transducer 4
The corresponding numerical value of variation, the corresponding pressure value of each analog quantity；Pressure value is stored and counted using control module 2
It calculates, the tension value and modified-image in three period of Dynamically Announce on LCD display 6: (1) real-time tension value numerical value and variation diagram
Picture；(2) 10s tension force mean value numerical value and modified-image before current point；(3) 100s tension force mean value numerical value and variation before current point
Image.
Wherein, preceding n seconds tension force mean value can acquire according to the following formula:
As shown in figure 3, being fixed with electrode-wire wheel 7 on strain pressure transducer 4, electrical fire is wound on electrode-wire wheel 7
Yarn cutting electrode silk 8, the upper and lower surface of strain pressure transducer 4 post resistance strain gage 9, Wire EDM wire electrode
Tension F on 8 acts on the force side of the strain pressure transducer 4, strain pressure transducer by electrode-wire wheel 7
4 stress are deformed, and 9 stress of resistance strain gage above stretches, and 9 forced compression of resistance strain gage below is converted to
Resistance variations are converted to relevant voltage variation by measuring circuit, analog quantity are converted to digital quantity by the A/D module 3,
The size of surveyed tension can be obtained by conversion again.
As shown in figure 4, control module 2 include power switch 21, button cell 22, extend out pin 23, ARM master chip 24,
First LCD display wiring pin 25 and manual correction button 26, power switch 21 are connect with DC power supply 1 to control module 2
Power supply, button cell 22 have power-down protection, still retain data when DC power supply 1 disconnects, extend out pin 23 and AD mould
Block 3 connects, and sends the digital quantity that A/D module 3 converts to ARM master chip 24, is converted into wire electrode reality by internal algorithm program
Border Tensity size, and shown on LCD display 6 in the form of images, the first LCD display wiring pin 25 and LCD
To show image, manual correction button 26, which is pressed, to be corrected, and can be removed wire electrode and be led for corresponding pin connection on display screen 6
The gravity of wheel 7, guarantees that tension obtained is the actual tension size of Wire EDM wire electrode 8.
As shown in figure 5, LCD display 6 includes the second LCD display wiring pin 61, rectangular coordinate system 62, real-time strain
It is worth before numerical value and modified-image 63, current point 100s tension before 10s tension force mean value numerical value and modified-image 64 and current point
Average value numerical value and modified-image 65, LCD display 6 by the second LCD display wiring pin 61 connect with control module 2 with
Dynamic display image, rectangular coordinate system X-axis are time change axis, and the unit second, range is 20 seconds, incremented by successively, and Y-axis is tension change
Change axis, units Newtons, range is 14 newton, 10s tension before Dynamically Announce real-time tension value numerical value and modified-image 63, current point
100s tension force mean value numerical value and modified-image 65 before average value numerical value and modified-image 64 and current point, whenever a screen image
The content that previous screen can be covered after having shown continues to show present image, and SD card module 5 can periodically save detected
Force value is to be used for data analysis and process.
Example:
Using traditional electric spark linear cutting machine, process does not have wire electrode tension detection function, so to processing
Quality, efficiency are affected, and not can avoid fracture of wire.Use the present invention can be with real-time detection wire electrode tension, in LCD display 6
Three curves of upper Real time dynamic display and three tension values respectively correspond real-time tension value, preceding 10s tension force mean value, preceding 100s
Tension force mean value, X-axis are the time, and range 140s, Y-axis is tension, range 14N, minimum precision 0.05N.
Then play the role of real-time monitoring to the tension of wire electrode, the image shown by LCD can be intuitively understood
Tension variation situation, by the Tensity size detected can further control its size variation to improve processing quality,
Efficiency and fracture of wire is avoided, the problem of this will be our follow-up studies.
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
Limiting the scope of the invention, those skilled in the art should understand that, in technical solution of the present invention
On the basis of, the various modifications or variations that can be made by those skilled in the art with little creative work still of the invention
Within protection scope.
Claims (9)
1. a kind of Wire EDM wire electrode tension detection and LCD image display device, it is characterised in that: it includes direct current
Source (1), control module (2), A/D module (3) and strain pressure transducer (4), the DC power supply (1) and the control mould
Block (2) is connected；The control module (2), the A/D module (3) and the strain pressure transducer (4) are sequentially connected to be formed
One sample circuit；The strain pressure transducer (4) is used to detect the analog quantity of wire electrode tension size during wire transporting,
And analog quantity is passed into the A/D module (3)；The A/D module (3) will after being used for the analog quantity of receiving electrode thread tension size
Analog quantity is converted to digital quantity, and digital transfer is handled to the control module (2)；The control module (2) is used
The relationship of digital quantity and actual tension value is calculated after receiving digital quantity and is corrected.
2. Wire EDM wire electrode tension detection according to claim 1 and LCD image display device, feature exist
In: it further includes LCD display (6), and the tension value after correction is passed through the place of internal algorithm program by the control module (2)
Reason, the image and numerical values recited that real-time display tension changes over time on LCD display (6) include real-time strain and n seconds first
Tension force mean value.
3. Wire EDM wire electrode tension detection according to claim 1 and LCD image display device, feature exist
In: it further includes SD card module (5), and SD card module (5) stores detected tension value for timing.
4. Wire EDM wire electrode tension detection according to claim 1 and LCD image display device, feature exist
In: the control module (2) is ARM controller, completes the sampling of wire electrode tension AD value, the meter of tension by its inside programming
Calculate and control Real-time image display.
5. Wire EDM wire electrode tension detection according to claim 1 and LCD image display device, feature exist
In: preceding n seconds tension force mean value algorithms of control module (2) inside programming use approximate solution.
6. Wire EDM wire electrode tension detection according to claim 5 and LCD image display device, feature exist
In: the preceding n seconds tension force mean value acquires according to the following formula:
7. Wire EDM wire electrode tension detection according to claim 1 and LCD image display device, feature exist
In: it is fixed with electrode-wire wheel (7) on the strain pressure transducer (4), is wound with wire electric discharge on electrode-wire wheel (7) and cuts
It cuts wire electrode (8), the upper and lower surface of the strain pressure transducer (4) posts resistance strain gage (9), Wire EDM electricity
Tension F on polar filament (8) acts on the force side of the strain pressure transducer (4) by electrode-wire wheel (7), described to answer
Variant pressure sensor (4) stress is deformed, and resistance strain gage (9) stress above stretches, resistance-strain below
Piece (9) forced compression, is converted to resistance variations, is converted to relevant voltage variation by measuring circuit, passes through the A/D module (3)
Analog quantity is converted to digital quantity, then the size of surveyed tension can be obtained by conversion.
8. Wire EDM wire electrode tension detection according to claim 1 and LCD image display device, feature exist
In: the control module (2) includes power switch (21), the button cell (22) with power-down protection, extends out pin
(23), ARM master chip (24), the first LCD display wiring pin (25) and manual correction button (26), power switch (21) with
DC power supply (1) connection, powers for the control module (2), extends out pin (23) and connect with the A/D module (3), will
The digital quantity of A/D module (3) conversion sends ARM master chip (24) to, is converted into wire electric discharge by internal algorithm program and cuts
Wire electrode (8) actual tension size is cut, and is shown on LCD display (6) in the form of images, the first LCD display
Wiring pin (25) is connect to show image with corresponding pin on LCD display (6), manual correction button (26) by press into
Row correction.
9. Wire EDM wire electrode tension detection according to claim 1 and LCD image display device, feature exist
In: the LCD display (6) includes the second LCD display wiring pin (61), rectangular coordinate system (62), real-time tension value number
Value and 100s tension before 10s tension force mean value numerical value before modified-image (63), current point and modified-image (64) and current point
Average value numerical value and modified-image (65), the LCD display (6) by the second LCD display wiring pin (61) with it is described
Control module (2) connection is time change axis, rectangular coordinate system (62) with dynamic display image, the X-axis of rectangular coordinate system (62)
Y-axis be tension variation axis, 10s tension force mean value before Dynamically Announce real-time tension value numerical value and modified-image (63), current point
100s tension force mean value numerical value and modified-image (65) before numerical value and modified-image (64) and current point, whenever a screen image is aobvious
The content that previous screen is covered after having shown continues to show present image.
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| CN201910280564.8A CN109967809B (en) | 2019-04-09 | 2019-04-09 | Wire cut electrical discharge machining electrode wire tension detection and LCD image display device |
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| CN201910280564.8A CN109967809B (en) | 2019-04-09 | 2019-04-09 | Wire cut electrical discharge machining electrode wire tension detection and LCD image display device |
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| CN109967809B CN109967809B (en) | 2020-12-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977000A (en) * | 2021-10-19 | 2022-01-28 | 泰州市新龙翔金属制品有限公司 | Profile tension fluctuation detection process and operation method |
| CN116275329A (en) * | 2023-03-29 | 2023-06-23 | 南通大学 | Wire-cut electric discharge machining quality on-line monitoring and evaluating system and method |
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| CN109967809B (en) | 2020-12-11 |
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