CN209272693U - The device of the linear cutter of molybdenum filament constant tension is maintained in a kind of process - Google Patents
The device of the linear cutter of molybdenum filament constant tension is maintained in a kind of process Download PDFInfo
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- CN209272693U CN209272693U CN201821767461.1U CN201821767461U CN209272693U CN 209272693 U CN209272693 U CN 209272693U CN 201821767461 U CN201821767461 U CN 201821767461U CN 209272693 U CN209272693 U CN 209272693U
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Abstract
The utility model relates to the device of the linear cutter of molybdenum filament constant tension is maintained in a kind of process, the device includes wire storage cylinder, tension guide wheel, electricity-supplying piece, upper block, lower tumbler, workpiece is between upper block and lower tumbler, molybdenum filament is sequentially connected wire storage cylinder, tension guide wheel, tension detecting module, electricity-supplying piece, upper block, workpiece, lower tumbler is to form a closed circuit, the device further includes tension adjustment module, tension detecting module, the tension situation of tension detecting module detection molybdenum filament, and tension situation is passed into tension adjustment module, tension adjustment module judges whether to need to adjust the tension of molybdenum filament according to tension situation, so that the constant tension of molybdenum filament.The utility model has the characteristics that the problem of high sensitivity, stability are good, structure is simple, are able to solve control lag in conventional tension regulating mechanism, guarantees that molybdenum filament tension maintains constant in line cutting processing, realizes identical tension processing.
Description
Technical field
The utility model relates to a kind of Wire-cut Electrical Discharge Machining field, molybdenum filament is maintained in specifically a kind of process
The device of the constant linear cutter of power.
Background technique
To-and-fro thread wire cutting machine tool has that easy to operate, low in cost, can to process big thickness, steep-taper workpiece etc. excellent
The main spark erosion equipment that point is China's production and is used.But to-and-fro thread wire cutting machine tool machining accuracy is low, serious shadow
The further development of to-and-fro thread wire cutting machine tool is rung.In many factors for influencing machining accuracy, the tension of wire electrode becomes
Change has large effect to machining accuracy.In to-and-fro thread wire cutting machine tool, wire electrode is in quick reciprocating motion always
State, with the progress of electro-discharge machining, wire electrode is since thermal stretching and discharge loss, deflection are gradually increased, the work on silk
Tension is also gradually reduced, and is caused wire electrode tension uneven, is caused " screws loosing at single side ", finally make zero load, short circuit etc. in process
Abnormal electric discharge phenomena increase, and machine finish and workpiece surface quality is caused to decline.Therefore in to-and-fro thread wire cutting machine
When bed processing must the tension to wire electrode in time adjusted, to reduce the vibration of wire electrode in process, raising work
The machining accuracy and surface quality of part.
To reduce influence of the wire electrode tension variation to machining accuracy, carry out process under constant-tension, lathe
Upper that tension is adjusted equipped with constant tensile control mechanism, there are mainly two types of current most commonly used constant tensile control mechanisms: such as
Weight type constant tension mechanism shown in Fig. 3 and spring constant tension mechanism as shown in Figure 4.Weight type constant tension mechanism is to pass through
Certain weight is hung on adjusting guide wheel to keep the tension of wire electrode, and mechanism response is slower, and tension adjustment has centainly
Lag, when machining area wire electrode tension becomes larger or becomes smaller, weight is under constant gravity, not rebalancing, weight meeting
Counter electrode thread tension is risen or fallen, but since wire electrode is in high-speed cruising state, the changed electrode of this section of tension
Silk has been wound on above silk cylinder, and the tension of this segment electrode silk when subsequent wire transporting is caused still to change, so that tension adjustment is made
With unobvious, tension adjustment is made to have certain lag.And weight can generate the wire electrode of high-speed cruising certain in commutation
Impact, the fracture of wire probability of wire electrode greatly increases.When weight adjusts tension, the size of tension is invariable, Bu Huisui
Wire electrode attenuate and reduce, as the extension of process time easily causes fracture of wire.Spring constant tension mechanism is to utilize spring
Replace the weight of suspension, external force applied to keep the tension of wire electrode to adjusting guide wheel by flexible deformation of spring itself,
But in the actual process, since the unstability of spring itself easily causes wire electrode excessive jitter occur, to influence lathe
Machining accuracy and cutting stability.All there is tension adjustment lag in above two constant tension mechanism, can only be certain
The tension for improving wire electrode in degree can not be such that process is under constant-tension state always.Wire electrode is in process
With the speed high-speed cruising of 7m/s~10m/s, traditional constant tension mechanism is opened from the tension variation for detecting wire electrode to completion
Power adjustment, whole process response is slower, tension adjustment can be made hysteresis occur, machining accuracy is caused to reduce.
Tension adjustment lag issues in the presence of traditional Weight type, spring tension control mechanism, the utility model
The processing method for proposing molybdenum filament constant tension in a kind of process, the processing method are completed by single-chip microcontroller and pressure sensor
Detection and adjusting to wire electrode tension.When wire electrode tension is beyond tension fluctuation range set by single-chip microcontroller but without departing from adding
When the permitted fluctuation range of work, SCM system controls the lathe pulse power and closes high frequency, stops processing, passes through control steel wire storage
Tension is adjusted in the method for the revolving speed of motor on cylinder, use even silk at a slow speed, guarantees that the wire electrode tension being wound on silk cylinder is permanent
It is fixed, return the tension of wire electrode again normally, the lathe of single-chip microcontroller control at this time opens high frequency, continues to process, and realizes permanent
Tension processing.
Utility model content
The main purpose of the utility model is to provide maintain the wire cutting of molybdenum filament constant tension to add in a kind of process
The device of work, the device include tension adjustment module, tension detecting module, and tension detecting module detects the tension situation of molybdenum filament,
And tension situation is passed into tension adjustment module, tension adjustment module judges whether to need to adjust molybdenum filament according to tension situation
Tension, so that the constant tension of molybdenum filament.The utility model has the characteristics that high sensitivity, stability are good, structure is simple, energy
It enough solves the problems, such as control lag in conventional tension regulating mechanism, guarantees that molybdenum filament tension maintains constant in line cutting processing,
Realize identical tension processing.
To achieve the above objectives, the technical solution adopted in the utility model are as follows: molybdenum filament tension is maintained in a kind of process
The device of constant linear cutter, the device include wire storage cylinder, tension guide wheel, electricity-supplying piece, upper block, lower tumbler, workpiece position
Between upper block and lower tumbler, molybdenum filament be sequentially connected the wire storage cylinder, tension guide wheel, tension detecting module, electricity-supplying piece, on
Guide wheel, workpiece, lower tumbler are to form a closed circuit, which is characterized in that the device further includes tension adjustment module, tension
Detection module, the tension detecting module detects the tension situation of the molybdenum filament, and the tension situation is passed to described
Power adjustment module, the tension adjustment module judge whether to need to adjust the tension of the molybdenum filament according to the tension situation, from
And make the constant tension of the molybdenum filament.
Preferably, the electricity-supplying piece is electrically connected with an electrode of the pulse power, and the workpiece is another with the pulse power
The electrical connection of one electrode, the tension adjustment module are electrically connected the pulse power, when needing to adjust the tension of the molybdenum filament, institute
It states tension adjustment module and controls the pulse power closing high frequency, stop processing the workpiece.
Preferably, the tension adjustment module electrical connection controls the frequency converter of the motor of the tension guide wheel, in the arteries and veins
Power supply to be rushed to close after high frequency, the tension adjustment module controls the frequency converter and the tension guide wheel is slowly run,
The speed of service of the molybdenum filament is slack-off, to realize that even silk adjusts the tension of the molybdenum filament at a slow speed.
Preferably, the tension detecting module is between the tension guide wheel and the electricity-supplying piece, the tension detection
Module includes one of pressure sensor, position sensor, the pressure value or position that the tension detecting module will test
Shifting value is transferred to the tension adjustment module, and the tension situation is the pressure value or the shift value.
Preferably, the tension adjustment module includes single chip machine controlling circuit, and the tension adjustment module is according to described
The pressure value of power detection module transmission or shift value calculate the Tensity size of the molybdenum filament, and the tension adjustment module calculates
Whether the Tensity size of the molybdenum filament is in the fluctuation range of predetermined value.
Preferably, the fluctuation range is ± 0.5N.
Preferably, the predetermined value is the initial tension on the molybdenum filament.
Compared with prior art, the utility model has the following beneficial effects: having that high sensitivity, stability is good, structure
The features such as simple, the problem of being able to solve control lag in conventional tension regulating mechanism, guarantee molybdenum filament in line cutting processing
Tension remains constant, realizes identical tension processing.
Detailed description of the invention
Fig. 1 is wire cutting identical tension detection according to the present utility model and regulation flow process figure.
Fig. 2 is that wire cutting identical tension processes movement wire system figure,
In figure: 1-wire storage cylinder, 2-tension guide wheels, 3-tension adjustment modules, 4-tension detecting modules, 5-single-chip microcontrollers
Control circuit, the 6-pulse powers, 7-electricity-supplying pieces, 8-workpiece, 9-wire electrodes, 10-upper blocks, 11-lower tumblers.
Fig. 3 is Weight type tension-adjusting gear figure,
In figure: 19-wire storage cylinders, 12-molybdenum filaments, 13-lower tumblers, 14-upper blocks, 15,16-guide wheels；17-tension tune
Save guide wheel；18-weights.
Fig. 4 is spring tension-adjusting gear figure,
In figure: 21-wire storage cylinders, 22-molybdenum filaments, 23-lower tumblers, 24-upper blocks；25,26-guide wheel；27-tension tune
Save guide wheel；28-springs.
Specific embodiment
It is described below for disclosing the utility model so that those skilled in the art can be realized the utility model.It retouches below
Preferred embodiment in stating is only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only the principles of the present invention, the utility model also has respectively on the premise of not departing from the spirit and scope of the utility model
Kind changes and improvements, these changes and improvements are both fallen in the range of claimed invention.The requires of the utility model
Protection scope defined by appended claims and its equivalent.
Referring to Fig.1, the device of the linear cutter of molybdenum filament constant tension is maintained in a kind of process, which includes storage
Silk cylinder 1, tension guide wheel 2, tension adjustment module 3, tension detecting module 4, electricity-supplying piece 7, upper block 10, lower tumbler 11, workpiece 8
Between upper block 10 and lower tumbler 11, electricity-supplying piece 7 is electrically connected with an electrode of the pulse power 6, workpiece 8 and the pulse power 6
The electrical connection of another electrode, molybdenum filament 9 is sequentially connected wire storage cylinder 1, tension guide wheel 2, tension detecting module 4, electricity-supplying piece 7, upper block
10, workpiece 8, lower tumbler 11, to form a closed circuit.
Tension detecting module 4 between tension guide wheel 2 and electricity-supplying piece 7, tension detecting module 4 include pressure sensor,
One of position sensor, when tension detecting module 4 includes pressure sensor, tension detecting module 4 detects that molybdenum filament 9 is right
The pressure size of pressure sensor, the pressure value that tension detecting module 4 will test are transferred to tension adjustment module 3；Work as tension
When detection module 4 includes position sensor, tension detecting module 4 detects displacement of the molybdenum filament 9 relative to pressure sensor,
The shift value that tension detecting module 4 will test is transferred to tension adjustment module 3.
Tension adjustment module 3 includes single chip machine controlling circuit 5, tension adjustment module 3 and the pulse power 6, control wire storage cylinder 1
Operating motor frequency converter electrical connection, the pressure value or displacement that tension adjustment module 3 is transmitted according to tension detecting module 4
Value calculates the Tensity size of molybdenum filament 9, tension adjustment module 3 calculate molybdenum filament 9 Tensity size whether predetermined value fluctuation model
In enclosing, fluctuation range is ± 0.5N；When the tension of molybdenum filament 9 is more than the fluctuation range of the predetermined value of setting, tension adjustment module 3
It controls the lathe pulse power 6 and closes high frequency, workpiece 8 is processed in stopping；Then, tension adjustment module 3 continues to adjust motor
Frequency converter so that motor speed becomes smaller, the speed of service of molybdenum filament 9 is slack-off, to realize uniform adjustment molybdenum filament 9 at a slow speed
Tension.
Wherein, the predetermined value is the initial tension on molybdenum filament 9.
In order to improve machining accuracy, set tension fluctuation range in the single chip machine controlling circuit 5 of tension adjustment module 3
Less than the permitted fluctuation range of process.
Referring to Fig. 2, a kind of method that the linear cutter of molybdenum filament constant tension is maintained in process, this method include with
Lower step: (1) before initial manufacture, molybdenum filament 9 has an initial tension；(2) in process, by tension detecting module 4 to molybdenum
The tension of silk is measured in real time, and after tension is more than tension set in tension adjustment module 3, tension adjustment module 3 is controlled
The pulse power 6 processed closes high frequency, stops to work pieces process；(3) tension-adjusting gear 3, which controls wire storage cylinder 1, reduces revolving speed, at a slow speed
The tension of molybdenum filament 9 is adjusted in wire transporting, and tension is made to revert to set tension again；(4) tension-adjusting gear 3 controls arteries and veins
It rushes power supply 6 and reopens high frequency, processed again；(5) it repeats the above steps (2), step (3), step (4), until workpiece
It completes the process.
Wherein, the set tension has certain fluctuation range, and fluctuation range is ± 0.5N, as long as molybdenum filament 9
On tension be initial tension ± 0.5N in processing be identical tension processing.
Wherein, the initial tension is set in upper silk, and guarantees the even tension of molybdenum filament 9 in upper silk.
The utility model has the following beneficial effects:
(1) processing method can be to avoid traditional weight first, tension adjustment lag in the isotonic apparatus for adjusting force of spring
Problem, so that the tension in process is in always in the range of work of permission.Monolithic processor control device in the processing method
In set tension fluctuation range it is smaller than fluctuation range permitted in process, therefore be more than single in tension fluctuation
When tension set by piece machine will carry out tension adjustment, tension at this time still falls within the process of identical tension, to keep away
Exempt from the problem of tension adjustment lag occur.
(2) tension adjustment in the processing method is adjusted using the method for even silk at a slow speed, the tension adjustment mode letter
Just and can to avoid in process because silk attenuates, tension variation caused by many reasons such as elongated, each time after tension adjustment
It can guarantee the even tension on molybdenum filament and size is suitable, avoid in conventional tension regulating device that tension adjustment is insufficient to ask
Topic.
It (3), can be right when due to carrying out tension adjustment when being processed using the identical tension processing method in the utility model
Tension on entire silk cylinder is adequately adjusted, and can avoid being in the presence of fracture of wire in process to a certain extent,
The probability for reducing fracture of wire improves processing efficiency while improving machining accuracy.
(4) when being processed using the identical tension processing method in the utility model, tension detection is different with adjustment process
Shi Jinhang belongs to two different stages, can be to avoid in processing by the way that the detection of tension and adjustment process are carried out separation
The lag issues that power is adjusted guarantee to realize identical tension processing.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only the principles of the present invention, the utility model also has respectively on the premise of not departing from the spirit and scope of the utility model
Kind changes and improvements, these changes and improvements are both fallen in the range of claimed invention.The requires of the utility model
Protection scope defined by appended claims and its equivalent.
Claims (7)
1. maintaining the device of the linear cutter of molybdenum filament constant tension in a kind of process, which includes wire storage cylinder (1), opens
Power guide wheel (2), electricity-supplying piece (7), upper block (10), lower tumbler (11), workpiece (8) be located at upper block (10) and lower tumbler (11) it
Between, molybdenum filament (9) be sequentially connected the wire storage cylinder (1), tension guide wheel (2), tension detecting module (4), electricity-supplying piece (7), on lead
(10), workpiece (8), lower tumbler (11) are taken turns to form a closed circuit, which is characterized in that the device further includes tension adjustment
Module (3), tension detecting module (4), the tension detecting module (4) detect the tension situation of the molybdenum filament (9), and will be described
Tension situation passes to the tension adjustment module (3), and the tension adjustment module (3) judges whether according to the tension situation
Need to adjust the tension of the molybdenum filament (9), so that the constant tension of the molybdenum filament (9).
2. the apparatus according to claim 1, which is characterized in that an electrode of the electricity-supplying piece (7) and the pulse power (6) electricity
Connection, the workpiece (8) are electrically connected with another electrode of the pulse power (6), and the tension adjustment module (3) is electrically connected institute
The pulse power (6) are stated, when needing to adjust the tension of the molybdenum filament (9), the tension adjustment module (3) controls the pulse electricity
High frequency is closed in source (6), stops processing the workpiece (8).
3. the apparatus of claim 2, which is characterized in that described of tension adjustment module (3) the electrical connection control
The frequency converter of the motor of power guide wheel (2), after the pulse power (6) close high frequency, tension adjustment module (3) control
The frequency converter makes the tension guide wheel (2) slowly run, and the speed of service of the molybdenum filament (9) is slack-off, to realize slow
The even silk of speed adjusts the tension of the molybdenum filament (9).
4. device according to claim 3, which is characterized in that the tension detecting module (4) is located at the tension guide wheel
(2) between the electricity-supplying piece (7), the tension detecting module (4) includes one of pressure sensor, position sensor,
The pressure value or shift value that the tension detecting module (4) will test are transferred to the tension adjustment module (3), and described
Power situation is the pressure value or the shift value.
5. device according to claim 4, which is characterized in that the tension adjustment module (3) includes single-chip microcontroller control electricity
Road (5), pressure value that the tension adjustment module (3) is transmitted according to the tension detecting module (4) or shift value calculate
Whether the Tensity size of the molybdenum filament (9), the tension adjustment module (3) calculate the Tensity size of the molybdenum filament (9) predetermined
In the fluctuation range of value.
6. device according to claim 5, which is characterized in that the fluctuation range is ± 0.5N.
7. device according to claim 5, which is characterized in that the predetermined value is the initial tension on the molybdenum filament (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821767461.1U CN209272693U (en) | 2018-10-30 | 2018-10-30 | The device of the linear cutter of molybdenum filament constant tension is maintained in a kind of process |
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| CN201821767461.1U CN209272693U (en) | 2018-10-30 | 2018-10-30 | The device of the linear cutter of molybdenum filament constant tension is maintained in a kind of process |
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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 |
| 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 |
-
2018
- 2018-10-30 CN CN201821767461.1U patent/CN209272693U/en active Active
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 |
| 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 |
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