CN106624223A - Method for measuring and stabilizing tension of electrode wire - Google Patents
Method for measuring and stabilizing tension of electrode wire Download PDFInfo
- Publication number
- CN106624223A CN106624223A CN201611219931.6A CN201611219931A CN106624223A CN 106624223 A CN106624223 A CN 106624223A CN 201611219931 A CN201611219931 A CN 201611219931A CN 106624223 A CN106624223 A CN 106624223A
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- China
- Prior art keywords
- wire electrode
- tension
- pressure sensor
- roller
- pressure
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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
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention discloses a method for measuring and stabilizing the tension of an electrode wire. The method comprises the following steps that 1, the electrode wire tension stabilizing range is determined; 2, the pressure is measured; 3, the pressure is converted into the tension, the tension is compared with the electrode wire tension stabilizing range determined in the step 1, if the tension is within the stabilizing range, cutting continues, and if the tension is out of the stabilizing range, the tension of the electrode wire is adjusted to be within the electrode wire tension stabilizing range determined in the step 1. According to the method, the tension borne by the electrode wire is converted into the pressure by analyzing force, and therefore the cost is greatly reduced; by means of electromechanical integrated control, generation of deviation is avoided, the tension borne by the electrode wire can be adjusted more precisely in real time, and the cutting efficiency and precision are guaranteed.
Description
Technical field
The present invention relates to Wire EDM field, more particularly to a kind of method of measurement and stabilized electrodes thread tension.
Background technology
During HS WEDM, wire electrode is easily shaken by silk and is affected, and reduces machining accuracy and cutting speed.Specifically
For, wire electrode tension fluctuation Producing reason has：Tension force is different during wire electrode on wire storage tube positive counter-movement；Work one section when
Between rear electrode silk can extend again, cause tension force to decline, tension force declines and is easily caused silk and shakes aggravation, easily fracture of wire.And, monolateral pine
Silk, the size control of tensile force affect always the normal work of wire cutting machine tool, and the tension force of wire electrode is generally by artificial tight
Silk, is limited by operator's experience and is caused the elastic inequality of wire electrode, the efficiency and precision of wire cutting is affected, while solely by electrode
Silk is tensed, and more cannot be corrected and stable tension.
In addition, the measurement of existing wire electrode tension is typically directly measured by tension pick-up, although relatively more directly perceived, but
The cost of tension pick-up is more high than the cost of pressure sensor, and in actual use, economic pressures are larger, is unsuitable for wide
It is general to use.
The content of the invention
In view of this, The embodiment provides a kind of measurement cost is low, tension stability can be repaiied to tension force
Just, it is ensured that the measurement of cutting efficiency and precision and the method for stabilized electrodes thread tension.
A kind of method that embodiments of the invention provide measurement and stabilized electrodes thread tension, comprises the following steps：
(1) stability range of wire electrode tension is determined；
(2) roller is pressed on wire electrode to be cut, pair of rollers wire electrode has on pressure, and pressure and wire electrode
Tension force is corresponding, and the roller connects pendulum, and the pendulum is provided with pressure sensor, and the pressure sensor can be measured in real time
Roller is pressed in the pressure produced on wire electrode；
(3) roller that step (2) pressure sensor is measured is pressed in the pressure produced on wire electrode and is converted into wire electrode institute
Compared with the tension force received, and the stability range of the wire electrode tension determined with step (1)；
In stability range, continue to cut；Outside stability range, pressure sensor transmits a signal to single-chip microcomputer, described
Single-chip microcomputer is connected with pressure sensor, and single-chip microcomputer produces instruction, and instruction is transferred to into stepper motor, the stepper motor connection
Single-chip microcomputer and pendulum, stepper motor receives instruction, and drives pendulum to deflect, and the pendulum drives roller deflection adjustment wire electrode
In the wire electrode tension stability range that tension force determines to step (1).
Further, in the step (1), the stability range of wire electrode tension is 12-15N.
Further, in the step (2), the range of pressure sensor is corresponding with the stability range of wire electrode tension.
Further, the range computational methods of the pressure sensor are as follows：
Force analysis is carried out to wire electrode and roller；
The pressure of pair of rollers wire electrode is calculated, computing formula is as follows：
N=2Fsin (90 ° of-θ/2)
In formula：N is the pressure of pair of rollers wire electrode, and F is the stable tension of wire electrode, and θ is between the wire electrode of roller both sides
Angle；
The stress of calculation pressure sensor, computing formula is as follows：
Fc=(N-G)/cos α
In formula：FcFor the stress of pressure sensor, G is the gravity of roller, and α is the angle of roller deflection.
Further, the range of the pressure sensor is 10N.
Further, in the step (3), the roller of pressure sensor measurement is pressed in the pressure produced on wire electrode and is converted into
The computing formula of the tension force suffered by wire electrode is as follows：
F1=(Fc1cosα+G)/2sin(90°-θ/2)
In formula：F1For the actual tension of wire electrode, Fc1Roller for pressure sensor measurement is pressed in what is produced on wire electrode
Pressure.
Further, the wire electrode is the molybdenum filament of Φ 0.15-0.25mm.
Compared with prior art, the invention has the advantages that：By the analysis to power by suffered by wire electrode
Power is converted into seeks pressure, substantially reduces cost, by electromechanical control, it is to avoid produce deviation, can more precisely in real time to electricity
Tension force suffered by polar filament is adjusted, and reaches the effect of closed-loop control, and tension force stablizes suffered by holding electrode silk, it is to avoid wire electrode
Shake, reduce fracture of wire probability, extend wire electrode service life, it is ensured that cutting efficiency and precision.
Description of the drawings
Fig. 1 is the flow chart of one embodiment of the invention.
Fig. 2 is the structural representation of one embodiment of the invention equipment therefor.
Fig. 3 is a force analysis figure of one embodiment of the invention.
Fig. 4 is another force analysis figure of one embodiment of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is further described.
Fig. 1 and Fig. 2 is refer to, The embodiment provides a kind of method of measurement and stabilized electrodes thread tension, bag
Include following steps：
(1) stability range of the tension force of wire electrode 1 is determined, in one embodiment, wire electrode 1 is the molybdenum of Φ 0.15-0.25mm
Silk, the stability range of the tension force of wire electrode 1 is 12-15N；
(2) roller 5 is pressed on wire electrode 1 to be cut, roller 5 has pressure, and pressure and wire electrode to wire electrode 1
Tension force on 1 is corresponding, and the connection pendulum 4 of the roller 5, the pendulum 4 is provided with pressure sensor 3, the pressure sensor 3
Roller 5 can in real time be measured and be pressed in the pressure produced on wire electrode 1；
The range of selected pressure sensor 3 is corresponding with the stability range of the tension force of wire electrode 1, the amount of pressure sensor 3
Journey computational methods are as follows：
Force analysis is carried out to wire electrode 1 and roller 5；
Pressure of the roller 5 to wire electrode 1 is calculated, computing formula is as follows：
N=2Fsin (90 ° of-θ/2)
In formula：N is pressure of the roller 5 to wire electrode 1, and F is the stable tension of wire electrode 1, and θ is the both sides wire electrode 1 of roller 5
Between angle；
As shown in figure 3, it is obtuse angle that θ is lower in working order, parallel, now our tension force F values 15N are close to, θ is 160 °,
Formula is substituted into, it is 5.21N to calculate roller 5 to the pressure of wire electrode 1；
The stress of calculation pressure sensor 3, computing formula is as follows：
Fc=(N-G)/cos α
In formula：FcFor the stress of pressure sensor 3, G is the gravity of roller 5, and α is the angle of the deflection of roller 5.
As shown in figure 4, G is 4N, 10 ° of α values substitute into formula, and the stress for obtaining pressure sensor 3 is 1.23N；
It is 10N that the field of load that pressure sensor 3 is calculated according to more than is 1kg, the i.e. range of pressure sensor 3,
By selecting the pressure sensor 3 corresponding with the stability range of the tension force of wire electrode 1, both can guarantee that without departing from field of load, damaged
Bad pressure sensor 3, can guarantee that certainty of measurement again.
(3) roller 5 that step (2) pressure sensor 3 is measured is pressed in the pressure produced on wire electrode 1 and is converted into wire electrode
Tension force suffered by 1, computing formula is as follows：
F1=(Fc1cosα+G)/2sin(90°-θ/2)
In formula：F1For the actual tension of wire electrode 1, Fc1Roller 5 for the measurement of pressure sensor 3 is pressed in product on wire electrode 1
Raw pressure.
Compared with the stability range of the tension force of wire electrode 1 determined with step (1)；
In stability range, continue to cut；
Outside stability range, pressure sensor 3 transmits a signal to unit piece 6, the unit piece 6 and pressure sensor 3
Connection, unit piece 6 produces instruction, and instruction is transferred to into stepper motor 2, the connection unit of the stepper motor 2 piece 6 and pendulum 4,
The reception instruction of stepper motor 2, and drive pendulum 4 to deflect, the pendulum 4 drives the tension force of the deflection adjustment wire electrode 1 of roller 5 extremely to exist
In the range of the tension stability of wire electrode 1 that step (1) determines.
The tension force suffered by wire electrode is converted into by the analysis to power seeks pressure, substantially reduce cost, by electromechanical one
Body is controlled, it is to avoid is produced deviation, more precisely the tension force suffered by wire electrode can be adjusted in real time, reaches the effect of closed-loop control
Really, tension force suffered by holding electrode silk is stablized, it is to avoid the shake of wire electrode, reduces the probability of fracture of wire, extends the use of wire electrode
Life-span, it is ensured that cutting efficiency and precision.
In the case where not conflicting, the feature in embodiment herein-above set forth and embodiment can be combined with each other.
The foregoing is only presently preferred embodiments of the present invention, not to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (7)
1. it is a kind of measurement and stabilized electrodes thread tension method, it is characterised in that comprise the following steps：
(1) stability range of wire electrode tension is determined；
(2) roller is pressed on wire electrode to be cut, pair of rollers wire electrode has pressure, and pressure and the tension force on wire electrode
Corresponding, the roller connects pendulum, and the pendulum is provided with pressure sensor, and the pressure sensor can in real time measure roller
It is pressed in the pressure produced on wire electrode；
(3) roller that step (2) pressure sensor is measured is pressed in the pressure produced on wire electrode to be converted into suffered by wire electrode
Compared with tension force, and the stability range of the wire electrode tension determined with step (1)；
In stability range, continue to cut；Outside stability range, pressure sensor transmits a signal to single-chip microcomputer, the monolithic
Machine is connected with pressure sensor, and single-chip microcomputer produces instruction, and instruction is transferred to into stepper motor, and the stepper motor connects monolithic
Machine and pendulum, stepper motor receives instruction, and drives pendulum to deflect, and the pendulum drives the tension force of roller deflection adjustment wire electrode
In the wire electrode tension stability range determined to step (1).
2. it is according to claim 1 measurement and stabilized electrodes thread tension method, it is characterised in that in the step (1),
The stability range of wire electrode tension is 12-15N.
3. it is according to claim 1 measurement and stabilized electrodes thread tension method, it is characterised in that in the step (2),
The range of pressure sensor is corresponding with the stability range of wire electrode tension.
4. it is according to claim 3 measurement and stabilized electrodes thread tension method, it is characterised in that the pressure sensor
Range computational methods it is as follows：
Force analysis is carried out to wire electrode and roller；
The pressure of pair of rollers wire electrode is calculated, computing formula is as follows：
N=2Fsin (90 ° of-θ/2)
In formula：N is the pressure of pair of rollers wire electrode, and F is the stable tension of wire electrode, and θ is the folder between the wire electrode of roller both sides
Angle；
The stress of calculation pressure sensor, computing formula is as follows：
Fc=(N-G)/cos α
In formula：FcFor the stress of pressure sensor, G is the gravity of roller, and α is the angle of roller deflection.
5. it is according to claim 4 measurement and stabilized electrodes thread tension method, it is characterised in that the pressure sensor
Range be 10N.
6. it is according to claim 1 measurement and stabilized electrodes thread tension method, it is characterised in that in the step (3),
The roller of pressure sensor measurement is pressed in the pressure produced on wire electrode and is converted into the computing formula of tension force suffered by wire electrode such as
Under：
F1=(Fc1cosα+G)/2sin(90°-θ/2)
In formula：F1For the actual tension of wire electrode, Fc1Roller for pressure sensor measurement is pressed in the pressure produced on wire electrode.
7. it is according to claim 1 measurement and stabilized electrodes thread tension method, it is characterised in that the wire electrode be Φ
The molybdenum filament of 0.15-0.25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219931.6A CN106624223A (en) | 2016-12-26 | 2016-12-26 | Method for measuring and stabilizing tension of electrode wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219931.6A CN106624223A (en) | 2016-12-26 | 2016-12-26 | Method for measuring and stabilizing tension of electrode wire |
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| CN106624223A true CN106624223A (en) | 2017-05-10 |
Family
ID=58828376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611219931.6A Pending CN106624223A (en) | 2016-12-26 | 2016-12-26 | Method for measuring and stabilizing tension of electrode wire |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128410A (en) * | 2018-10-30 | 2019-01-04 | 南京航空航天大学无锡研究院 | The processing method and device of the linear cutter of molybdenum filament constant tension are maintained in a kind of process |
| CN109967809A (en) * | 2019-04-09 | 2019-07-05 | 南京航空航天大学 | A kind of detection of Wire EDM wire electrode tension and LCD image display device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003083827A (en) * | 2001-09-10 | 2003-03-19 | Ogura Clutch Co Ltd | Tension detector |
| CN2818039Y (en) * | 2005-08-25 | 2006-09-20 | 江汉大学 | Oscillating electrode wire constant-tension controller of fast-walking thread cutting machine tool |
| CN202045768U (en) * | 2011-04-25 | 2011-11-23 | 唐山晶玉科技有限公司 | Cutting line tension control device |
| CN102615728A (en) * | 2012-03-30 | 2012-08-01 | 湖南红太阳光电科技有限公司 | Cutting wire tension control device of crystalline silicon square cutting machine |
| CN103528744A (en) * | 2013-10-21 | 2014-01-22 | 中国电子科技集团公司第四十八研究所 | Method and device for detecting cutting line tension of non-contact multi-line cutting machine |
| CN105181210A (en) * | 2015-06-05 | 2015-12-23 | 南通醋酸纤维有限公司 | Tow tension detection device in linear movement and detection method |
| CN204934791U (en) * | 2015-08-31 | 2016-01-06 | 成都工业学院 | Wire Electrode WEDM automatic takeup |
| CN105800384A (en) * | 2016-05-18 | 2016-07-27 | 北方工业大学 | Optical fiber winding machine dynamic tension multistage control device and method |
-
2016
- 2016-12-26 CN CN201611219931.6A patent/CN106624223A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003083827A (en) * | 2001-09-10 | 2003-03-19 | Ogura Clutch Co Ltd | Tension detector |
| CN2818039Y (en) * | 2005-08-25 | 2006-09-20 | 江汉大学 | Oscillating electrode wire constant-tension controller of fast-walking thread cutting machine tool |
| CN202045768U (en) * | 2011-04-25 | 2011-11-23 | 唐山晶玉科技有限公司 | Cutting line tension control device |
| CN102615728A (en) * | 2012-03-30 | 2012-08-01 | 湖南红太阳光电科技有限公司 | Cutting wire tension control device of crystalline silicon square cutting machine |
| CN103528744A (en) * | 2013-10-21 | 2014-01-22 | 中国电子科技集团公司第四十八研究所 | Method and device for detecting cutting line tension of non-contact multi-line cutting machine |
| CN105181210A (en) * | 2015-06-05 | 2015-12-23 | 南通醋酸纤维有限公司 | Tow tension detection device in linear movement and detection method |
| CN204934791U (en) * | 2015-08-31 | 2016-01-06 | 成都工业学院 | Wire Electrode WEDM automatic takeup |
| CN105800384A (en) * | 2016-05-18 | 2016-07-27 | 北方工业大学 | Optical fiber winding machine dynamic tension multistage control device and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128410A (en) * | 2018-10-30 | 2019-01-04 | 南京航空航天大学无锡研究院 | The processing method and device of the linear cutter of molybdenum filament constant tension are maintained in a kind of process |
| CN109967809A (en) * | 2019-04-09 | 2019-07-05 | 南京航空航天大学 | A kind of detection of Wire EDM wire electrode tension and LCD image display device |
| CN109967809B (en) * | 2019-04-09 | 2020-12-11 | 南京航空航天大学 | Wire cut electrical discharge machining electrode wire tension detection and LCD image display device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |