CN107159983A - Electric spark linear cutting machine feed processing unit (plant) and method - Google Patents
Electric spark linear cutting machine feed processing unit (plant) and method Download PDFInfo
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- CN107159983A CN107159983A CN201710523567.0A CN201710523567A CN107159983A CN 107159983 A CN107159983 A CN 107159983A CN 201710523567 A CN201710523567 A CN 201710523567A CN 107159983 A CN107159983 A CN 107159983A
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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
- B23H7/26—Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode
- B23H7/28—Moving electrode in a plane normal to the feed direction, e.g. orbiting
-
- 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
- B23H7/105—Wire guides
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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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention discloses a kind of electric spark linear cutting machine feed processing unit (plant), including the workbench being placed in by transmission mechanism on fuselage, workpiece, wire storage cylinder, guide frame, upper silk arm and lower silk arm, upper capstan and lower capstan and several intermediate trailing wheels, wire electrode, wire storage cylinder is connected with motor, transmission mechanism includes upper slide, lower skateboard, X direction guiding rails are secondary and Y-direction guide rail is secondary and X is to feed screw nut pair and Y-direction feed screw nut pair, two screw mandrels of two feed screw nut pairs are connected with respective servomotor, servomotor is connected with programmable controller, workpiece is extremely connected with high frequency electric source respective one respectively with wire electrode；Two inputs of one voltage sampling circuit are connected by respective electrode with workpiece or wire electrode respectively, and the output end and high frequency electric source of voltage sampling circuit are connected with programmable controller；The invention also discloses a kind of electric spark linear cutting machine feed processing method, wire broken rate can be also greatly reduced under more severe processing conditions in the present invention, so as to avoid frequent change electric wire, improve processing efficiency.
Description
Technical field
The present invention relates to a kind of feed processing unit (plant) and method for electric spark linear cutting machine.
Background technology
Electric spark linear cutting machine is implemented to put close to wire electrode by wire electrode to-and-fro thread, workpiece with the quasi- way of contact
Electricity, corrosion, to realize the processing to workpiece；Existing processing unit (plant) and method to improve processing efficiency, use wire electrode with
Fair speed and higher electro-discharge machining power carry out at the uniform velocity feed and constant energy electric discharge, the easy fracture of wire when the two rigid connection is touched,
It is uneven due to there is point discharge phenomenon and conductance when particularly workpiece surface is more coarse and has oxide skin, cause to occur
Shelf depreciation, energy converges, and causes wire broken rate higher, needs frequent change electric wire, has a strong impact on processing efficiency.
The content of the invention
The purpose of the present invention is that there is provided a kind of electric spark linear cutting machine feed for deficiencies of the prior art
Processing unit (plant) and method, wire broken rate can be also greatly reduced under more severe processing conditions in it, so as to avoid frequently more
Wire electrode is changed, processing efficiency is improved.
To reach above-mentioned purpose, electric spark linear cutting machine feed processing unit (plant) of the invention, including pass through transmission mechanism
The workbench being placed on fuselage, the workpiece being fixed on workbench, fixed wire storage cylinder, guide frame, upper silk arm and lower silk arm, upper master
Guide wheel and lower capstan and several intermediate trailing wheels, the wire electrode being around on wire storage cylinder and all guide wheels, wire storage cylinder and motor
It is connected, the transmission mechanism includes secondary upper slide, lower skateboard, X direction guiding rails and Y-direction guide rail pair and X to screw mandrel-pair of nut and Y-direction
Screw mandrel-pair of nut, lower skateboard is connected by one group of guideway therein respectively with fuselage and upper slide with lower skateboard, described two
Two screw mandrels of bar-pair of nut are respectively arranged on fuselage and lower skateboard, and two nuts are respectively arranged on lower skateboard and upper slide, two screw mandrels
Be connected with respective servomotor, servomotor is connected with programmable controller, workpiece and wire electrode respectively with high frequency electric source
Respective one is extremely connected；Characterized by further comprising a voltage sampling circuit, two inputs of voltage sampling circuit pass through respectively
Respective electrode is connected with workpiece or wire electrode, the output end and high frequency electric source of voltage sampling circuit with programmable controller phase
Even；
As a further improvement on the present invention, upper capstan or lower capstan are metal material, and the guide wheel is used as voltage sample electricity
The input terminal electrode that road is connected with wire electrode；Because upper capstan or lower capstan are closer to processing sections wire electrode, by should
Guide wheel is as input terminal electrode, and not only structure is more simple, and when more precisely measurement is processed between workpiece and wire electrode
Real-time voltage；
As a further improvement on the present invention, upper capstan or lower capstan are non-metallic material, and conduct is provided with the guide wheel
The input terminal electrode that voltage sampling circuit is connected with wire electrode；The input terminal electrode is contacted with wire electrode, equally can be more accurate
Real-time voltage during ground measurement processing between workpiece and wire electrode；
The present invention is applied to the electric spark linear cutting machine feed processing method of said apparatus, it is characterised in that including following step
Suddenly：1）Wire：Start motor and wire storage cylinder alternating forward and backward, realize the to-and-fro thread of wire electrode：2）Rapid feed：Can
Programmable controller controls corresponding servomotor to rotate by default initial speed so that workbench and workpiece are with speed V1 pre-
If machine direction on move closer to wire electrode, programmable controller is carried in workpiece and electrode by preset value control high frequency electric source
The electro-discharge machining ENERGY E 1 of rated voltage and high frequency electric source output between silk, at the same voltage sampling circuit by the workpiece measured and
Real-time voltage between wire electrode feeds back to programmable controller；3）Feed at a slow speed：As workbench and workpiece are existed with speed V1
Wire electrode is moved closer on default machine direction, the real-time voltage between the workpiece and wire electrode that voltage sampling circuit is measured
During less than the voltage preset value inputted to programmable controller, this voltage preset value, which is less than, to be carried between workpiece and wire electrode
Rated voltage, programmable controller adjusts corresponding servomotor to default feed rotating speed so that workbench and workpiece are with speed
Degree V2 continues on default machine direction close to wire electrode, V2< V1；And start timing at this moment；4）Workpiece surface is cut：
Workbench and workpiece is kept to continue to move to one section of default time T with speed V2, wire electrode cuts workpiece in this period T
It is interior；5）Profoundly：After period T terminates, programmable controller adjusts the electro-discharge machining energy of high frequency electric source output to preset value E2,
E2>E1, until completing this cutting.
The present invention by feed process by being divided into rapid feed and at a slow speed two stages of feed, when voltage sampling circuit is measured
Workpiece and wire electrode between real-time voltage when being less than the voltage preset value inputted to programmable controller, show therebetween
Interpolar discharge it is more obvious, the two closer to the distance now into feed at a slow speed, and is entered with relatively low electro-discharge machining ENERGY E 1
Enter workpiece surface clipping time section T, in this period T in wire electrode incision workpiece, even if workpiece surface is more coarse and deposits
In oxide skin, because cutting speed and electro-discharge machining power are smaller, serious shelf depreciation is prevented, fracture of wire can be greatly reduced
Rate, so as to avoid frequent change electric wire, after wire electrode incision inside workpiece, then improves electro-discharge machining energy, so as to improve
Processing efficiency；
As a further improvement on the present invention, voltage preset value is set to be carried in the rated voltage between workpiece and wire electrode
90%；Real-time voltage between the workpiece and wire electrode that such as measure is less than the 90% of rated voltage, illustrates that interpolar discharge is very bright
It is aobvious, show that the spacing of the two is relatively near, now entering feed at a slow speed ensures longer conversion time；
In summary, wire broken rate can be also greatly reduced under more severe processing conditions in the present invention, so as to avoid frequently
Change electric wire, improves processing efficiency.
Brief description of the drawings
Fig. 1 is the front view of electric spark linear cutting machine feed processing unit (plant) embodiment of the present invention.
Fig. 2 is the circuit block diagram of electric spark linear cutting machine feed processing unit (plant) of the present invention.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in Figure 1 and Figure 2, the electric spark linear cutting machine feed processing unit (plant) of the embodiment of the present invention, including pass through transmission
Workbench 12 that mechanism is placed on fuselage 11, the workpiece 27 being fixed on workbench 12, wire storage cylinder 13, silk on fuselage 11
Frame 14, the upper silk arm 15 on guide frame 14 and lower silk arm 16, upper capstan 17 and lower capstan 10 and several intermediate trailing wheels 18,
It is around in the wire electrode 19 on wire storage cylinder 13 and all guide wheels, wire storage cylinder 13 and motor（It is not shown）It is connected, the driver
Structure include upper slide 21, lower skateboard 20, X direction guiding rails 22 and Y-direction guide rail 23 and X of pair of pair to screw mandrel-pair of nut 24 and Y-direction screw mandrel-
Pair of nut 25, lower skateboard 20 passes through the phase of one group of guideway 22 or 23 therein respectively with fuselage 11 and upper slide 21 with lower skateboard 20
Even, two screw mandrels of two screw mandrels-pair of nut 24,25 are respectively arranged on fuselage 11 and lower skateboard 20, and two nuts are respectively arranged on down
On slide plate 20 and upper slide 21, two screw mandrels are connected with respective servomotor 26, servomotor 26 with programmable controller phase
Even, workpiece 27 is extremely connected with high frequency electric source respective one respectively with wire electrode 19；Upper capstan 17 is synthetic cut stone material, can be carried
High-wearing feature a, input of a voltage sampling circuit is connected by the electrode 8 on guide wheel 17 and wire electrode 19, electrode 8
Contacted for hard alloy material and with wire electrode 19, another input of voltage sampling circuit is connected by electrode 9 with workpiece 27,
Electrode 9 is on the distal end of workpiece 27 distance electrode silk 19, and the output end and high frequency electric source of voltage sampling circuit are and programmable control
Device processed is connected.
Suitable for the electric spark linear cutting machine feed processing method of said apparatus, comprise the following steps：1）Wire：Start
Motor and the alternating forward and backward of wire storage cylinder 13, realize the to-and-fro thread of wire electrode 19：2）Rapid feed：Programmable controller
Corresponding servomotor 26 is controlled to rotate by default initial speed（If workpiece is along X to close to wire electrode, then driving and X are to silk
The connected servomotor of bar-pair of nut 24；Such as workpiece is along Y-direction close to wire electrode, then driving is connected with Y-direction screw mandrel-pair of nut 25
Servomotor；Such as workpiece then drives two servomotors simultaneously diagonally close to wire electrode）So that workbench 12 and workpiece 27
Wire electrode 19 is moved closer on default machine direction with speed V1, programmable controller is added by preset value control high frequency electric source
The electro-discharge machining ENERGY E 1 for rated voltage and the high frequency electric source output being loaded between workpiece 27 and wire electrode 17, while voltage sample
Real-time voltage between the workpiece 27 measured and wire electrode 19 is fed back to programmable controller by circuit；3）Feed at a slow speed：With
Workbench 12 and workpiece 27 move closer to wire electrode 19 with speed V1 on default machine direction, when voltage sampling circuit is measured
Workpiece 27 and wire electrode 19 between real-time voltage when being less than the voltage preset value inputted to programmable controller, this voltage is pre-
If value is the 90% of the rated voltage being carried between workpiece 27 and wire electrode 19, programmable controller adjusts corresponding servo electricity
Machine 26 is to default feed rotating speed so that workbench 12 and workpiece 27 with speed V2 on default machine direction on continue close
Wire electrode 19, V2< V1；And start timing at this moment；4）Workpiece surface is cut：Workbench 12 and workpiece 27 are kept with speed V2
One section of default time T is continued to move to, in this period T in the incision of wire electrode 19 workpiece 27；5）Profoundly：Period, T terminated
Afterwards, the electro-discharge machining energy of programmable controller adjustment high frequency electric source output is to preset value E2, E2>E1, cuts until completing this
Cut.
The present invention by feed process by being divided into rapid feed and at a slow speed two stages of feed, when wire electrode 19 and workpiece 27
When near enough, interpolar is breakdown, forms spark discharge, the reality between the workpiece 27 and wire electrode 19 that voltage sampling circuit is measured
When voltage when being less than the voltage preset value inputted to programmable controller, show interpolar discharge therebetween it is obvious that two
Person's is closer to the distance, and in good time sampled voltage circuit is connect by system voltage-frequency conversion circuit forming frequency signal, programmable controller
Speed of the workbench on default machine direction is controlled to V2 by this frequency signal, into feed at a slow speed, while controlling electric discharge
Energy is E1, and simultaneity factor starts timing, enters workpiece surface clipping time section T with relatively low electro-discharge machining ENERGY E 1, herein
In period T in the incision of wire electrode 19 workpiece 27, because V2 and E1 are smaller, discharge energy during the two quasi- contact was both reduced, i.e.,
Make workpiece surface more coarse and there is oxide skin, because cutting speed and electro-discharge machining power are smaller, prevent serious office
Portion discharges, and wire broken rate can be greatly reduced, so that frequent change electric wire is avoided, behind the incision workpiece 27 of wire electrode 19 inside, then
Improve to larger electro-discharge machining ENERGY E 2, so as to improve processing efficiency；Period T setting and voltage preset value and enter swivel
The size of speed is relevant, can rule of thumb adjust, fully ensure that wire electrode 19 cuts workpiece 27 within the time period；Period T's
Umber of pulse can also be exported by programmable controller metering system drive signal by setting, to ensure to cut workpiece certain length
Distance.
The invention is not restricted to above-mentioned implementation, such as electrode 8 also can be on lower capstan 9, or lower capstan 9 uses metal material
Matter, the input terminal electrode that the guide wheel is connected as voltage sampling circuit and wire electrode；Servomotor also can be replaced stepper motor.
Claims (5)
1. a kind of electric spark linear cutting machine feed processing unit (plant), including the workbench, solid being placed in by transmission mechanism on fuselage
Due to the workpiece on workbench, fixed wire storage cylinder, guide frame, upper silk arm and lower silk arm, upper capstan and lower capstan and several
Intermediate trailing wheel, the wire electrode being around on wire storage cylinder and all guide wheels, wire storage cylinder are connected with motor, and the transmission mechanism includes
Upper slide, lower skateboard, X direction guiding rails be secondary and Y-direction guide rail is secondary and X is to screw mandrel-pair of nut and Y-direction screw mandrel-pair of nut, lower skateboard and machine
Body and upper slide are connected by one group of guideway therein respectively with lower skateboard, the two screw mandrels difference of two screw mandrels-pair of nut
On fuselage and lower skateboard, two nuts are respectively arranged on lower skateboard and upper slide, and two screw mandrels are connected with respective servomotor,
Servomotor is connected with programmable controller, and workpiece is extremely connected with high frequency electric source respective one respectively with wire electrode；Its feature
It is also to include a voltage sampling circuit, two inputs of voltage sampling circuit pass through respective electrode and workpiece or electrode respectively
Silk is connected, and the output end and high frequency electric source of voltage sampling circuit are connected with programmable controller.
2. electric spark linear cutting machine feed processing unit (plant) as claimed in claim 1, it is characterised in that upper capstan or lower master
Guide wheel is metal material, the input terminal electrode that the guide wheel is connected as voltage sampling circuit and wire electrode.
3. electric spark linear cutting machine feed processing unit (plant) as claimed in claim 1, it is characterised in that upper capstan or lower master
Guide wheel is non-metallic material, and the input terminal electrode being connected as voltage sampling circuit and wire electrode is provided with the guide wheel.
4. for device as claimed in claim 1 electric spark linear cutting machine feed processing method, it is characterised in that including with
Lower step：1）Wire：Start motor and wire storage cylinder alternating forward and backward, realize the to-and-fro thread of wire electrode：2）Quickly enter
Knife：Programmable controller controls corresponding servomotor to rotate by default initial speed so that workbench and workpiece are with speed
V1 moves closer to wire electrode on default machine direction, and programmable controller is carried in workpiece by preset value control high frequency electric source
Rated voltage between wire electrode and the electro-discharge machining ENERGY E 1 of high frequency electric source output, while voltage sampling circuit will be measured
Real-time voltage between workpiece and wire electrode feeds back to programmable controller；3）Feed at a slow speed：As workbench and workpiece are with speed
Degree V1 moves closer to wire electrode on default machine direction, the reality between the workpiece and wire electrode that voltage sampling circuit is measured
When voltage when being less than the voltage preset value inputted to programmable controller, this voltage preset value is less than being carried in workpiece and wire electrode
Between rated voltage, programmable controller adjusts corresponding servomotor to default feed rotating speed so that workbench and work
Part is continued close to wire electrode, V2 with speed V2 on default machine direction< V1；And start timing at this moment；4）Workpiece surface
Cutting：Workbench and workpiece is kept to continue to move to one section of default time T with speed V2, wire electrode is cut in this period T
In workpiece；5）Profoundly：After period T terminates, the electro-discharge machining energy of programmable controller adjustment high frequency electric source output is to default
Value E2, E2>E1, until completing this cutting.
5. electric spark linear cutting machine feed processing method as claimed in claim 4, it is characterised in that set voltage preset value
For be carried between workpiece and wire electrode the 90% of rated voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710523567.0A CN107159983B (en) | 2017-06-30 | 2017-06-30 | Cutting feed processing method of wire cut electric discharge machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710523567.0A CN107159983B (en) | 2017-06-30 | 2017-06-30 | Cutting feed processing method of wire cut electric discharge machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107159983A true CN107159983A (en) | 2017-09-15 |
| CN107159983B CN107159983B (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710523567.0A Active CN107159983B (en) | 2017-06-30 | 2017-06-30 | Cutting feed processing method of wire cut electric discharge machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108031935A (en) * | 2017-12-14 | 2018-05-15 | 嘉善霸器机械制造有限公司 | Wire wire electric discharge machining device in a kind of nine axis eight linkage |
| CN109332830A (en) * | 2018-11-30 | 2019-02-15 | 自贡市嘉特数控机械制造有限公司 | The wire drive device and method of to-and-fro wire-travelling type electric spark linear cutting machine |
| CN112439954A (en) * | 2020-11-18 | 2021-03-05 | 安徽国防科技职业学院 | Numerical control linear cutting machine tool for prolonging service life of molybdenum wire |
| CN112439956A (en) * | 2020-11-18 | 2021-03-05 | 安徽国防科技职业学院 | Multifunctional numerical control linear cutting machine |
| CN112439955A (en) * | 2020-11-18 | 2021-03-05 | 安徽国防科技职业学院 | Multi-axis machining numerical control linear cutting machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108031935A (en) * | 2017-12-14 | 2018-05-15 | 嘉善霸器机械制造有限公司 | Wire wire electric discharge machining device in a kind of nine axis eight linkage |
| CN109332830A (en) * | 2018-11-30 | 2019-02-15 | 自贡市嘉特数控机械制造有限公司 | The wire drive device and method of to-and-fro wire-travelling type electric spark linear cutting machine |
| CN109332830B (en) * | 2018-11-30 | 2023-09-05 | 自贡市嘉特数控机械制造有限公司 | Wire feeding method of reciprocating wire feeding type wire cut electric discharge machine |
| CN112439954A (en) * | 2020-11-18 | 2021-03-05 | 安徽国防科技职业学院 | Numerical control linear cutting machine tool for prolonging service life of molybdenum wire |
| CN112439956A (en) * | 2020-11-18 | 2021-03-05 | 安徽国防科技职业学院 | Multifunctional numerical control linear cutting machine |
| CN112439955A (en) * | 2020-11-18 | 2021-03-05 | 安徽国防科技职业学院 | Multi-axis machining numerical control linear cutting machine |
| CN112439956B (en) * | 2020-11-18 | 2021-11-26 | 安徽国防科技职业学院 | Multifunctional numerical control linear cutting machine |
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