CN1016590B - Method and equipment for improving quality of work piece surface - Google Patents
Method and equipment for improving quality of work piece surfaceInfo
- Publication number
- CN1016590B CN1016590B CN 87101457 CN87101457A CN1016590B CN 1016590 B CN1016590 B CN 1016590B CN 87101457 CN87101457 CN 87101457 CN 87101457 A CN87101457 A CN 87101457A CN 1016590 B CN1016590 B CN 1016590B
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- China
- Prior art keywords
- wire
- tube
- silk
- slide plate
- electrode
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The present invention is suitable for processing components with high surface quality requirements, and is particularly suitable for processing components in complex shapes. The method comprises: the feed of single processing is smaller than the radius of an electrode wire, and in the processing, the length of forward wire travelling is larger than that of backward wire travelling. The whole length of the electrode wire can be operated uniformly in stripe-free processing. Devices for realizing the method comprise a mechanical relay control device, a numerical control device and a timing circuit. On the premise that the requirement of productive efficiency is met, the stripe-free processing is realized, the surface quality of the processed components is enhanced, the structure is simple, and the operation is reliable.
Description
The present invention relates to a kind of method and apparatus of walking the silk cutting machine tool processing parts fast, particularly a kind of method and apparatus of walking the silk cutting machine tool quality of work piece surface fast that improves.
" mechanical engineering manual " 49-8～10 that May nineteen eighty-two, China Machine Press published page, 22～23 pages of technologies that disclose a kind of wire electric discharge electrode cutting processing, the steps include: that the tool-electrode silk on wire cutting machine tool moves back and forth fast with respect to the workpiece work, and when each the reciprocating motion, platen is done feed motion by feed in every single processing, but owing to walk silk cutting machine tool in process fast, wire electrode moves reciprocatingly, whenever make a round trip and just form a pair of striped up and down, the fringe phenomena that forms of finished surface as shown in Figure 1, thus the surface quality of part to be processed reduced.Still the way of not having head it off at present both at home and abroad.
The purpose that the present invention proposes provides a kind of method and device that improves the wire cutting machine tool quality of work piece surface, guarantees that under the production efficiency condition with higher, fringe phenomena does not appear in the surface of part to be processed, thereby improves the surface quality of processing parts.
The object of the present invention is achieved like this:
A kind of method that improves the wire cutting machine tool quality of work piece surface, the steps include: to do to move back and forth fast with respect to workpiece at the tool-electrode silk of wire cutting machine tool, and when each the reciprocating motion, platen is done feed motion by feed in every single processing, feed in every single processing is less than or equal to the radius of wire electrode, when wire electrode is made positive movement with respect to workpiece, its reverse wire length is less than forward wire length, each wire electrode of working that back and forth all makes advances a distance to forward equably, through repeatedly passing forward to an end extreme position; Wire electrode is done counter motion with respect to workpiece then, this the time reverse wire length greater than forward wire length, back and forth all make the wire electrode of working equably to distance of reverse propulsion, through repeatedly passing forward to other end extreme position at every turn, finish a systemic circulation, and then circulation.
A kind of device that improves wire cutting machine tool quality of work piece surface method, comprise the slide plate 12 that is positioned on the support, be installed in the wire storage tube device on the slide plate, this device has wire storage tube 1, the silk tube stent of supporting wire tube, drive the motor and the electrical control gear of silk tube, has secondary ram 4 between support and slide plate 12, and the secondary motor 12 that drives this ram 4, electrical control gear is a mechanical relay control device, it is by the collision block 5 that once moves about, 8, one stroke switch 6,7, the secondary collision block 9 that moves about, secondary stroke switch 11,13, and relay J 1, J2 forms, one stroke switch 6,7 with the wire electrode length of the relative position decision single processing of the collision block that once moves about; Secondary stroke switch 11,13 and the secondary total length that the relative position determining electrode silk of collision block is participated in processing of moving about, by the relative position of collision block 5,8 that once move about with silk tube 1, the residing duty of appropriate section wire electrode on the decision silk tin 1;
A kind of device that improves wire cutting machine tool quality of work piece surface method, comprise the slide plate 12 that is positioned on the support, be installed in the wire storage tube device on the slide plate, this device has wire storage tube 1, the silk tube stent of supporting wire tube, drive the motor and the electrical control gear of silk tube, this electrical control gear is a numerical control device, have A/D analog-digital converter and digital control circuit, the A/D analog-digital converter of this numerical control device becomes digital quantity to the rotation amount of silk tube 1, and the silk tube rotates a circle and sends pulse 1, silk tube clockwise turns to+and 1, be rotated counterclockwise and be-1, by digital control circuit, control wire length;
A kind of device that improves wire cutting machine tool quality of work piece surface method, comprise the slide plate 12 that is positioned on the lathe, be installed in the wire storage tube device on the slide plate, this device has wire storage tube 1, the silk tube stent of supporting wire tube, drive the motor and the electrical control gear of silk tube, this electrical control gear is to have dial-up dish and control of microcomputer device, this dial-up dish is imported time signal among the microcomputer, its output signal is the motor steering control signal, the time of the numeral correspondence silk tube rotation of dial-up, promptly realize the wire electrode number of turns that no striped is processed.
The method and apparatus that the present invention proposes: work in-process, use the total length of wire electrode equably, one by one, to reduce the loss of wire electrode, make processing reliable and stable, to improve the quality of the treatment of surfaces of components.
Fig. 1 is the fringe phenomena that the part to be processed surface forms.
Fig. 2 is machinery-relay control device.
Fig. 2 a is the mechanical part structural representation.
Among the figure: 1. a tube, 2. a motor, 3. secondary motor, 4. secondary ram, 5. collision block II, 6. travel switch S1-1,7. travel switch S1-2 once move about, 8. the collision block I of once moving about, 9. the secondary collision block that moves about, 10. support, 11. secondary stroke switch S 2-1,12. slide plate, 13. secondary stroke switch S 2-2.
Fig. 2 b is Principle of Electric Engine figure of relay control.
Among the figure: J1 is a relay, and S1-1, S1-2 are the one stroke switches.
Fig. 2 c is relay control secondary Principle of Electric Engine figure.
Among the figure: J2 is a relay, and S2-1, S2-2 are the secondary stroke switches.
Fig. 3 is numerical control device control principle figure.
Fig. 4 is timing circuit control principle figure.
The piece surface condition diagram that Fig. 5 processes with the present invention.
The method that the present invention deals with problems is: a large amount of experiments repeat to have confirmed following result: in process, when the processing amount of feeding of single was not more than the radius of wire electrode, fringe phenomena (being that chequered with black and white striped disappears on processing parts) did not appear in the treatment of surfaces of components.But satisfying under the condition of certain productivity ratio, the length of general employed wire electrode can be above 30～60 meters.
In process, wire electrode each in back and forth toward (or multiple) time lathe the processing amount of feeding be called feed in every single processing.Single is processed the length L and the thickness of workpiece H of required wire electrode, and productivity ratio γ, the amount of feeding (when striped not occurring) are the radius of wire electrode for R(R), K is relevant with wire electrode silk speed,
Process velocity V=γ/H millimeter/minute=γ/60H mm/second
Single t=R/V process time second when the processing amount of feeding is R
Second=60RH/ the γ of t=R/(γ/60H) second,
Single is processed required wire electrode length L=Kt rice=60KHR/ γ rice,
When processing throughput γ=40 millimeter/minute, wire electrode diameter R equals 0.08 millimeter, wire electrode silk speed K=9 meter per second, and when thickness of workpiece is 28～56 millimeters,
Calculate to such an extent that single processing filament length degree L is 30～60 meters,
Owing to use 30～60 meters these segment electrode silks repeatedly, its loss will be very serious, and the diameter of wire electrode will diminish rapidly, and intensity also obviously reduces, and influence the dimensional accuracy of processing parts significantly.
With total length is that 300 meters wire electrode is an example, and each reciprocating motion of wire electrode is 30～40 meters long, and its process of working is as follows: (annotate: the silk tube just (instead) go to just be abbreviated as (instead) and going to).
From left to right:
0 is just going to 32M is inverted to 2M and is just going to 34M and be inverted to 4M and just going to 36M ... 296M is inverted to 266M and is just going to 298M and be inverted to 268M and just going to 300M,
From right to left:
300M is inverted to 268M and is just going to 298M and be inverted to 266M ... 34M is inverted to 2M and is just going to 32M and be inverted to 0,
Like this, the employed wire electrode length of each reciprocating motion is 30M and 32M, satisfy work piece surface and do not produced the requirement of striped, and in whole process, used whole wire electrodes equably, one by one, satisfied the condition that reduces the wire electrode loss simultaneously.
The device of realizing said method has following three classes:
1. machinery-relay control device:
By mechanical part, travel switch, move about collision block and relevant relay circuit are formed.
1) mechanical part: see Fig. 2 a
By silk tube 1, motor 2, secondary motor 3, secondary ram 4, once move about collision block II 5, travel switch S1-1 6 and S1-2 7, once the move about collision block 9, support 10, secondary stroke switch S 2-1 11, slide plate 12, secondary stroke switch S 2-2 13 of collision block I 8, secondary that move about formed.
The collision block position one-time mechanical that moves about is controlled, and has controlled the employed wire electrode length of each reciprocating motion.
The collision block position secondary mechanical of moving about control, by the relative position of collision block with the silk tube that move about, it is in running order to have determined the silk tube to go up certain partial electrode silk.By slowing down,, make wire electrode equably, little by little work by of the relative motion of secondary Electric Machine Control secondary ram with respect to slide plate.Determined wire electrode to participate in the total length of whole process by the move about distance of collision block 9 and secondary stroke switch room of secondary.Make motor commutation by relay, all wire electrode enters duty circularly.
Concrete course of action is as follows:
Shown in Fig. 2 a:
Motor 2 rotations, drive 1 rotation of silk tube, by guide rail mechanism drive secondary ram 4 and on the collision block 5 that moves about, 8 and slide plate 12 move from left to right with respect to support 10, when the collision block 8 that once moves about bumps travel switch S1-2 7, shown in Fig. 2 b, relay J 1 adhesive, normally-closed contact J1-2, J1-3 disconnects, normally opened contact J1-2, J1-3 closes, motor 2 counter-rotatings, drive 1 counter-rotating of silk tube, secondary ram 4 and on the collision block 5 that moves about, 8 and slide plate 12 move from right to left, when the collision block 5 that once moves about bumps S1-1 6, J1 discharges, motor 2 commutations, the processing feed motion is finished one back and forth, and its stroke has determined the length that single is participated in the wire electrode of processing.
By Fig. 2 a and Fig. 2 c: 3 rotations of secondary motor drive ram 4 by screw-nut body and move from left to right with respect to slide plate 12, the collision block 5 that once moves about on the ram 4,8 also move together, make the wire electrode of working partly equably, little by little conversion from left to right, when giving fixed limiting length, the secondary collision block 9 that moves about bumps secondary stroke switch S 2-2 13, relay J 2 adhesives, normally-closed contact J2-2, J2-3 opens, normally opened contact J2-2, J2-3 closes, 3 counter-rotatings of secondary motor, ram 4 and last time thereof the collision block 5 that moves about, 8 move from right to left relative to slide plate 12, the motor silk of promptly at every turn working is conversion equably from right to left also, when secondary moves about collision block 9 when bumping travel switch S2-1 11, and motor 3 counter-rotatings, all wire electrode is worked and has been finished a circulation, so periodic duty.
2. calculation control device: utilize the digit pulse technology, the rotation amount of silk tube is become digital quantity with D conversion method.The silk tube rotates a circle and sends pulse 1, is+1 clockwise, is-1 counterclockwise, by a cover digital control circuit, and control wire length.
Its principle is as follows:
If: all the wire electrode on the silk tube is the A circle, and the wire electrode number of turns that meets no striped processing is the n circle, and as shown in Figure 3, state of a control is:
(1) clockwise turn to n circle back oppositely, the suitable wire electrode of 1 circle is about 0.5M,
(2) be rotated counterclockwise to reverse again behind the n-4 circle, like this, promptly along be moved to the left with respect to silk tube position repeatedly at every turn, after n circle wire electrode moved to left extreme position, state of a control promptly changed in the processing district of n circle:
1. be rotated counterclockwise to reverse behind the n circle,
2. clockwise turn to n-4 circle back oppositely,
N circle wire electrode is along with moving right with respect to silk tube position repeatedly at every turn like this, encloses wire electrode to n and moves to right behind the extreme position, and state of a control changes direction again, and reciprocation cycle can meet the demands.
3. time-controlling arrangement:
Because the wire cylinder motor rotating speed is constant, the counting of n circle can be converted into regular hour t among Fig. 3.
As the rotational time corresponding to the n circle is t, and (n-4) the circle rotational time is t, adopts typical timing circuit to meet the demands.
Referring to Fig. 4: will import the time in the single-chip microcomputer by the dial-up dish, it is output as the motor steering control signal, and commutation signal is that 0 o'clock corresponding motor just changes; Commutation signal is corresponding motor counter-rotating in 1 o'clock, the once corresponding dial-up dish of the every commutation of motor has been dialled a numeral, the time of the corresponding silk tube of the numeral of dial-up rotation, the promptly corresponding wire electrode number of turns that realizes no striped processing, and the time that makes counter-rotating, the number of turns of then not having striped machined electrode silk was towards moving corresponding to positive veer, until extreme position less than the time of just changeing, oppositely move to another extreme position again, circulation has promptly realized method of the present invention so repeatedly.
The comparison of three kinds of implementations:
(1) machinery-relay control: its frame for movement is complicated, and electric control gear is simpler;
(2) counting control: electric control gear is complicated, and mechanical device is simpler;
(3) time control: electric control gear and mechanical device are all simpler.
Processed sample according to device of the present invention now, compare with the workpiece that the normal conventional method processes, can find out obviously that effect of the present invention is as shown in Figure 5 extraordinary: A partly is commonsense method processing, and B partly is that method of the present invention and device are processed.
Claims (4)
1, a kind of method that improves the wire cutting machine tool quality of work piece surface, its step is, the relative workpiece of tool-electrode silk at wire cutting machine tool is done to move back and forth fast, and when each the reciprocating motion, platen is done feed motion by feed in every single processing, it is characterized in that: feed in every single processing is less than or equal to the radius of wire electrode, when wire electrode is made positive movement with respect to workpiece, its reverse wire length is less than forward wire length, each wire electrode of working that back and forth all makes advances a distance to forward equably, through repeatedly passing forward to an end extreme position; Wire electrode is done counter motion with respect to workpiece then, this the time reverse wire length greater than forward wire length, back and forth all make the wire electrode of working equably to distance of reverse propulsion, through repeatedly passing forward to other end extreme position at every turn, finish a systemic circulation, and then circulation.
2, a kind of device of 1 described raising wire cutting machine tool quality of work piece surface method as requested, comprise the slide plate 12 that is positioned on the support, be installed in the wire storage tube device on the slide plate, this device has wire storage tube 1, the silk tube stent of supporting wire tube, drive the motor and the electrical control gear of silk tube, it is characterized in that: have secondary ram 4 between support and slide plate 12, and the secondary motor 12 that drives this ram 4, electrical control gear is a mechanical relay control device, it is by the collision block 5 that once moves about, 8, one stroke switch 6,7, the secondary collision block 9 that moves about, secondary stroke switch 11,13, and relay J 1, J2 forms, one stroke switch 6,7 with the wire electrode length of the relative position decision single processing of the collision block that once moves about; Secondary stroke switch 11,13 and the secondary total length that the relative position determining electrode silk of collision block is participated in processing of moving about, by the relative position of collision block 5,8 that once move about with silk tube 1, the residing duty of appropriate section wire electrode on the decision silk tin 1.
3, a kind of device of raising wire cutting machine tool quality of work piece surface method according to claim 1, comprise the slide plate 12 that is positioned on the support, be installed in the wire storage tube device on the slide plate, this device has wire storage tube 1, the silk tube stent of supporting wire tube, drive the motor and the electrical control gear of silk tube, it is characterized in that: this electrical control gear is a numerical control device, have A/D analog-digital converter and digital control circuit, the A/D analog-digital converter of this numerical control device becomes digital quantity to the rotation amount of silk tube 1, the silk tube rotates a circle and sends pulse 1, silk tube clockwise turns to+and 1, be rotated counterclockwise and be-1, by digital control circuit, control wire length.
4, a kind of device of raising wire cutting machine tool quality of work piece surface method according to claim 1, comprise the slide plate 12 that is positioned on the support, be installed in the wire storage tube device on the slide plate, this device has wire storage tube 1, the silk tube stent of supporting wire tube, drive the motor and the electrical control gear of silk tube, it is characterized in that this electrical control gear is to have dial-up dish and control of microcomputer device, this dial-up dish is imported time signal among the microcomputer, its output signal is the motor steering control signal, the time of the numeral correspondence silk tube rotation of dial-up, promptly realize the wire electrode number of turns that no striped is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101457 CN1016590B (en) | 1987-11-28 | 1987-11-28 | Method and equipment for improving quality of work piece surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101457 CN1016590B (en) | 1987-11-28 | 1987-11-28 | Method and equipment for improving quality of work piece surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1033357A CN1033357A (en) | 1989-06-14 |
| CN1016590B true CN1016590B (en) | 1992-05-13 |
Family
ID=4813442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87101457 Expired CN1016590B (en) | 1987-11-28 | 1987-11-28 | Method and equipment for improving quality of work piece surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016590B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003045614A1 (en) * | 2001-11-27 | 2003-06-05 | Mitsubishi Denki Kabushiki Kaisha | Wire electrical discharge machining apparatus |
| CN102179581A (en) * | 2011-04-25 | 2011-09-14 | 苏州电加工机床研究所有限公司 | Digital type wire feeding drum driving and controlling device of electrical discharge wire cutting machine |
| CN106001815A (en) * | 2016-07-31 | 2016-10-12 | 潘琴丽 | Wire movement limiting device for small linear cutting machine |
-
1987
- 1987-11-28 CN CN 87101457 patent/CN1016590B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1033357A (en) | 1989-06-14 |
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