CN208866547U - A kind of device of automatic inhibition molybdenum filament form and position - Google Patents
A kind of device of automatic inhibition molybdenum filament form and position Download PDFInfo
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- CN208866547U CN208866547U CN201820370275.8U CN201820370275U CN208866547U CN 208866547 U CN208866547 U CN 208866547U CN 201820370275 U CN201820370275 U CN 201820370275U CN 208866547 U CN208866547 U CN 208866547U
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- molybdenum filament
- filament form
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Abstract
The application discloses a kind of automatic device for inhibiting molybdenum filament form and position, comprising: have the matrix of through-hole, left and right that is mutually fixed with described matrix and being arranged in the through-hole left coil and right coil arranged apart, it is formed in the molybdenum filament channel between the left coil and the right coil, coil power supply circuit for the left coil and the right coil power supply to generate electromagnetic field at the molybdenum filament channel, driving described matrix surround the power-equipment of molybdenum filament channel rotation.The application can make the linear posture of molybdenum filament to the maximum extent, to improve linear cutter quality.
Description
Technical field
This application involves wire cutting machine tool fields, and in particular to a kind of automatic device for inhibiting molybdenum filament form and position.
Background technique
Linear cutter is to make electrode using the fine wire of continuous moving, carries out pulse spark electric discharge removal gold to workpiece
Belong to or excision forming, the equipment are mainly used for processing the work that superhard steel, hard alloy, various shape are complicated and precision is tiny
Part.Wire electrode (hereinafter referred to as molybdenum filament) is a kind of fine wire being fabricated by noble metals such as molybdenums, and molybdenum filament passes through medium (work
Liquid, emulsion, electrolyte etc.) it discharges with workpiece, corrosion metal achievees the purpose that excision forming.
In recent years, with the continuous development of automatic technology, various digital control wire-electrode cutting equipment (refer both to middle wire-moving to cut below
Cutting mill bed) it is gradually popularized in electric machining industry, the technologies such as mechanical precision, position-force control, high frequency electric source all reach
Higher level, such as: constant tension device is installed and used, and used tracking process control technology etc., so that because of wire machine
Molybdenum filament radial vibration amplitude caused by structure constantly reduces, and it is relatively stagnant to implement active technology to space form and position
Afterwards, space form and position caused by molybdenum filament Discharge Force is increasingly becoming the main reason for influencing precision, is always to hinder processing matter
The technical problem that amount and efficiency improve.Existing wire cutting machine tool, molybdenum filament stress are mainly the active force (Discharge Force) of discharge channel
With axial tensile force etc., (such as Fig. 1, below letter when molybdenum filament is generated space form and position by laterally (radial direction) Discharge Force effect
Claim form and position), it is necessary to molybdenum filament deviation guide wheel outer fulcrum is limited by two guide holes above and below processing sections molybdenum filament (to be cut
Point) line distance (molybdenum filament amount of deflection), this method has certain effect to form and position tool is reduced, but since manufacturing industry is to part
Accuracy class requirement is higher and higher, and there is an urgent need to improved technologies with General Promotion equipment machining accuracy, and guider reduces shape at present
Position changing method mainly has following deficiency:
1, Discharge Force causes molybdenum filament form and position and molybdenum filament and guider is made to generate sliding friction, makes molybdenum filament and guider
Abrasion must seriously regularly replace very much, thereby reduce production efficiency, increase production cost；Because abrasion must be adjusted often
Molybdenum filament offset is difficult to ensure complicated big workpiece Continuous maching precision.
2, guider is to inhibiting form and position caused by Discharge Force not have initiative, with less " digitlization, automatic
Change " application control ability, and to the passive restriction effect of molybdenum filament limited (guide hole diameter is than molybdenum filament diameter greatly at least 0.02mm),
The influence of Discharge Force is only reduced to a certain extent, i.e. the form and position of molybdenum filament is inevitable, also just cannot achieve and allows at molybdenum filament
In ideally processing, make that machining accuracy is difficult to further increase and guiding discharge state labile influences process velocity.
3, since form and position can not be overcome, make Accuracy of finish be a greater impact (Form and position error is big, concave-convex mold not
It is mating etc.), or even it is easy to appear serious quality problems such as " angles of collapsing ".
4, since wire cutting is often (multiple) processing of multitool, and Discharge Force the putting much smaller than the first knife that the second knife is later
Electric power, (Discharge Force is different, and amount of deflection and arc shape are all for the machining locus line for processing the first knife and subsequent second knife (or multitool)
It is different) registration is bad.
5, since Discharge Force effect makes molybdenum filament processing channel arc shaped, galvanic corrosion bits are taken out of electric discharge to slow down working solution
Phenomena such as region is easy to cause discharge condition to deteriorate, and generates secondary discharge or short circuit.
The above problem is not effectively improved always for many years.Therefore, change electric machining form and position suppression technology
Backwardness has more scientific EDM Technology, wisdom, automation and precision to numerical control line cutting technology progress
Important meaning.
Summary of the invention
The purpose of the application, is: in view of the above-mentioned problems, the application provides a kind of automatic device for inhibiting molybdenum filament form and position, together
When also propose a kind of nc wire-cutting for configuring this device, to make the linear posture of molybdenum filament to the maximum extent, to improve
Linear cutter quality and efficiency.
The technical solution of the application is:
A kind of device of automatic inhibition molybdenum filament form and position characterized by comprising
Matrix with through-hole,
Left and right that is mutually fixed with described matrix and being arranged in the through-hole left coil and right coil arranged apart,
It is formed in the molybdenum filament channel between the left coil and the right coil,
Coil power supply for the left coil and the right coil power supply to generate electromagnetic field at the molybdenum filament channel
Circuit, and
Described matrix is driven to surround the power-equipment of molybdenum filament channel rotation.
The application further includes following preferred embodiment based on the above technical solution:
The power-equipment is stepper motor.
The motor driver of the stepper motor and the coil power supply circuit with the digital control system of nc wire-cutting
Circuit connection.
The left coil and the right coil are coaxially arranged, and the axis of the left coil and the right coil with it is described
The axially bored line of through-hole intersects vertically.
The left coil and the right coil are arranged symmetrically centered on the axially bored line of the through-hole.
Described matrix includes:
Magnet ring,
The slip ring being coaxially fixed below the magnet ring,
It is fixed on the outer gear ring of the slip ring periphery, and
Two magnetic poles mutually fixed with the magnet ring and radially-inwardly stretched out；
The left coil and the right coil are respectively wound around in two magnetic poles, and the power-equipment passes through gear
Transmission mechanism and the outer gear ring are sequentially connected.
It further include a pedestal, the slip ring is slidably connected with pedestal pivot.
It further include magnetic shielding cover, the magnetic shielding cover is by the left coil, the right coil, the magnet ring, the slip ring
It is accommodated in the inner with two magnetic poles.
The advantages of the application, is:
1, this morpheme control device of the application implements " number to processing sections molybdenum filament by active force always along cut direction
Word " is precisely controlled, to offset Discharge Force actively to reduce or even eliminate molybdenum filament space form and position, makes molybdenum to the maximum extent
Silk is consistent (approximate " standard " straight line posture) with upper and lower guide wheels outer fulcrum (point of contact) line direction, to improve work pieces process essence
Degree.
2, molybdenum filament form and position is reduced or even eliminated, so that molybdenum filament is in the mobile posture of stability line, helps to maintain molybdenum
The stability of silk processing sections, improves gap discharge machining state, improves Numerical Control Wire Cutting speed.Meanwhile also improving
The machining locus line registration of one knife and the processing of subsequent second knife (or multitool).
3, the present apparatus can reduce its morpheme spatial variations, lead up and down to be greatly decreased by offsetting molybdenum filament Discharge Force
Sliding friction to device and molybdenum filament improves the service life of the two, realizes contactless " gear silk ".In addition the present apparatus is non-connects
Control device is touched, is effectively reducing the abrasion to molybdenum filament simultaneously, working solution will not generate the injection of molybdenum filament any to device
It influences.
4, since the present apparatus can reduce molybdenum filament amount of deflection, making molybdenum filament processing channel is approximately a straight line, to be conducive to work
Make the problems such as galvanic corrosion bits are taken out of region of discharge, largely reduce secondary discharge or short circuit by liquid occurrence probability.
Detailed description of the invention
The application is further described with reference to the accompanying drawings and embodiments:
Fig. 1 is molybdenum filament form and position schematic diagram in line cutting processing；
Fig. 2 is the whole schematic diagram of nc wire-cutting in the embodiment of the present application；
Fig. 3 is the schematic diagram of internal structure for inhibiting the device of molybdenum filament form and position in the embodiment of the present application automatically；
Fig. 4 is the outside drawing for inhibiting the device of molybdenum filament form and position in the embodiment of the present application automatically.
Wherein: p- is by cutting workpiece, q- molybdenum filament, 1- left coil, the right coil of 2-, 3- slip ring, 4- stepper motor, 5- molybdenum filament
Channel, 6- magnet ring, 7- magnetic pole, 8- pedestal, 9- magnetic shielding cover, 10- high-frequency line cutting power supply, 11- molybdenum filament straight line active section, 12-
Upper guide, guider under 13-, 14- outer gear ring, 15- gear drive.
Specific embodiment
Fig. 2 shows a specific embodiments of this nc wire-cutting of the application, with traditional numeric-control wire cutting machine phase
Be comprising: molybdenum filament (wire electrode), folding and unfolding molybdenum filament wire storage cylinder, guide molybdenum filament numerous guide wheels, driving molybdenum filament movement
Motor, high-frequency line cutting power supply 10, the digital control system with 10 circuit connection of high-frequency line cutting power supply.Aforementioned molybdenum filament includes for cutting
The molybdenum filament straight line active section 11 of workpiece is cut, molybdenum filament straight line active section 11 is oriented to by upper guide 12 and lower guider 13, limit
Molybdenum filament processed is deviated, is vibrated.The upper and lower ends of high-frequency line cutting power supply 10 to the molybdenum filament straight line active section 11 of nc wire-cutting are logical
Enter flow direction by the high-frequency pulse current of cutting workpiece p.
The key improvements of the present embodiment are that the nc wire-cutting is provided with the automatic dress for inhibiting molybdenum filament form and position
It sets.
Referring to shown in Fig. 3, the device of above-mentioned automatic inhibition molybdenum filament form and position includes:
Matrix with through-hole,
Left coil 1 and right coil 2 (left coil 1 and right coil 2 one mutually fixed with above-mentioned matrix and be arranged in through-hole
The first from left right side is arranged apart),
Be formed in the molybdenum filament channel 5 between left coil 1 and right coil 2 (namely left coil 1 and right coil 2 and between every
Standard width of a room in an old-style house gap),
Coil power supply circuit for left coil 1 and the power supply of right coil 2 to generate electromagnetic field at molybdenum filament channel 5, and
Matrix is driven to surround the power-equipment of molybdenum filament channel 5 (pivot) rotation.
Molybdenum filament straight line active section 11 passes through molybdenum filament channel 5.
In the present embodiment, above-mentioned power-equipment is stepper motor 4, the motor driver of the stepper motor 4 and above-mentioned line
Enclose power supply circuit with the digital control system circuit connection of nc wire-cutting itself.Aforementioned coil power supply circuit includes high-precision
Digital control power constant current driving equipment.
Above-mentioned left coil 1 and right coil 2 is coaxially arranged, and through-hole on the axis and matrix of left coil 1 and right coil 2
Axially bored line intersect vertically.Further, left coil 1 and right coil 2 the bilateral symmetry cloth centered on the axially bored line of the through-hole
It sets.
The mounting arrangements of above-mentioned two coil for convenience, while influence of the strengthening electric current to magnetic field at molybdenum filament channel 5, on
Matrix is stated using this structure type: matrix includes: magnet ring 6, is coaxially fixed on the slip ring 3 of 6 lower section of magnet ring, is fixed on slip ring
The outer gear ring 14 of 3 peripheries, (magnetic pole 7 and magnet ring 6 are integrated two magnetic poles 7 that are fixed and radially-inwardly stretching out with 6 one of magnet ring
Formula structure).Above-mentioned left coil 1, right coil 2 are wound respectively to be arranged in aforementioned two magnetic pole 7, the stepping electricity as power-equipment
Machine 4 is sequentially connected by gear drive and outer gear ring 14, and then drives slip ring 3, magnet ring 6, magnetic pole 7, left coil 1 and right line
2 rotation of circle.
Aforementioned magnet ring 6 and magnetic pole 7 use the materials such as the very high silicon steel of magnetic conductivity or permalloy, and magnet ring 6 and magnetic pole
7 are an integral structure.As shown in figure 4, influencing other components to make the present apparatus not or not by external magnetic fields, also configuring
Magnetic shielding cover 9, the magnetic shielding cover 9 is by above-mentioned left coil 1, right coil 2, preceding coil 3, rear coil 4, magnet ring 6 and four magnetic poles 7
It accommodates in the inner, the outer surface of magnetic shielding cover 9 is the soft magnetic material of high permeability.
It is generated when left coil 1 and right coil 2 pass to same direction current, in 5 region of molybdenum filament channel between two magnetic poles close
Like uniform magnetic field.No current in molybdenum filament when being not in discharge condition, also just not by the effect of Ampere force；When processing electric discharge
Dither direct current is wherein flowed through, at this moment molybdenum filament is in magnetic field by Ampere force, the size and Orientation and coil current, molybdenum of power
Silk electric current etc. factors it is related (1, the parameters such as other factors such as coil turn be considered constant for the time being；2, pass through high frequency electric source parameter
Molybdenum filament average operating current can be set, i.e., known to molybdenum filament average operating current), size of current, that is, controllable force in control coil
Size (straight wire (molybdenum filament) current direction is constant, and magnetic direction and ampere force direction have corresponding relationship).And the present embodiment will
The two coils are placed on the rotating mechanism being made of components such as stepper motor 4 and matrixes, then passing through two coils of rotation
Magnetic direction can be changed.Electromotion straight wire (molybdenum filament) in above-mentioned magnetic field by Ampere force act on, and conducting wire (molybdenum filament) by
Power direction is related with magnetic direction (rotation position), and the factors such as size and coil current are related.
Ampere force (counteracting force) size is directly proportional to electric current, coil magnetic field intensity and magnetic fields length, basis in design
Discharge Force range determines the parameters such as magnetic permeability μ, the number of turns, coil radius.Ampere force direction is obtained from current working motion course bearing
, Ampere force size is determined by high frequency machined parameters.Ampere force direction is realized by controlling the rotation angle of rotating mechanism；Peace
Training power size can calculate, control coil size of current (and direction, by control current direction in practical application, then rotating dress
Set and only need to rotate within the scope of 180 degree) it obtains.
Because wire cutting discharge process is extremely complex, when discharge, the factors such as immediate current size it is unpredictable, this dress
Set dexterously with Discharge Force there is synchronous, direct ratio to apply characteristic using Ampere force, i.e. electric discharge causes Discharge Force and generates electric discharge electricity
Stream, discharge current generates Ampere force in magnetic field simultaneously, and two power sizes are also directly proportional to discharge current.Discharge Force and Ampere force
Simultaneously occur it is contrary cancel out each other, thus dexterously reduce molybdenum filament form and position.Due in process, molybdenum filament short circuit shape
State odds very little, but electric current generation is also had at this time, in order to avoid the Ampere force as caused by short circuit current, between
Gap voltage collection circuit existing short-circuit signal enables coil current, once that is, short-circuit signal effectively closes coil electricity immediately
Stream.
Since Discharge Force direction and molybdenum filament direction of feed are on the contrary, can obtain current kinetic according to digital control system machining locus
Direction, as long as then magnetic field is identical as the direction of motion to the direction of the practical counteracting force of molybdenum filament generation, so as to offset Discharge Force
Influence.Actual coil axis direction (magnetic direction) may point to arbitrary angle in plane degree in the case where stepper motor, gear drive, from
And when molybdenum filament passes through electric current in available plane any direction power (left hand rule).The driver of stepper motor and numerical control
System is connected, and controls signal from digital control system, it continuously adjusts coil axis according to the direction of current machining locus
Direction keeps ampere force direction consistent with molybdenum filament direction of feed always.
When left coil 1 and right coil 2 (series connection of two coils) pass to same direction current, magnetic field superposition enhances and in coil magnetic pole
Intermediate region (i.e. molybdenum filament channel 5) forms approaches uniformity magnetic field.Other components are influenced or not by outside to make the present apparatus not
Magnetic field influences, and crust of the device surface is made into shielding using the soft magnetic material of high permeability.
The present embodiment is mounted with an above structure shape in the lower section of upper guide 12 and the top of lower guider 13 respectively
The device of the automatic inhibition molybdenum filament form and position of formula, it is clear that the two morpheme control devices are arranged in by cutting workpiece P's
Two opposite sides (two sides up and down in Fig. 2), at work the two morpheme control devices from processing sections molybdenum filament upper and lower ends actively
Two power are generated, to offset Discharge Force effect.Because cutting galvanic corrosion process is extremely complex, Mechanical Contact force method frictional dissipation
Greatly, link it is more, reaction can not use at all slowly, the present apparatus use electromagnetic force method, automatic synchronization, contactless counteracting discharge
Power.
It refers again to shown in Fig. 2, according to work piece cut motion profile in processing, calculates process cut direction in real time, in processing
According to work piece cut motion profile, calculate processing cut direction in real time, by cut direction determine rotating mechanism direction of rotation and
It rotates angle (the specially direction of rotation of matrix and angle), can determine that the size of coil current by high frequency machined parameters, lead to
The size of current for crossing double-polarity control D/A converter regulating winding and direction are (if control current direction, rotating device only need
Rotate 180 degree), output makes molybdenum filament Ampere force (counteracting force) to coil after high accuracy number control power constant current driving
Direction is identical as cut direction.Obviously, this active compensation method can accurately allow Ampere force to offset Discharge Force to the work of electrode
With, so that influence of the form and position to machining accuracy be greatly decreased, average 75% or more amount of deflection of reduction.Meanwhile also improving
The machining locus line registration of one knife and the processing of subsequent second knife (or multitool).
Certainly, above-described embodiment is only the technical concepts and features for illustrating the application, and its object is to make people much of that
Solution present context is simultaneously implemented accordingly, and the protection scope of the application can not be limited with this.It is all according to the application major technique
The equivalent transformation or modification that the Spirit Essence of scheme is done should all be covered within the scope of protection of this application.
Claims (8)
1. a kind of automatic device for inhibiting molybdenum filament form and position characterized by comprising
Matrix with through-hole,
Left and right that is mutually fixed with described matrix and being arranged in the through-hole left coil (1) and right coil (2) arranged apart,
It is formed in the molybdenum filament channel (5) between the left coil (1) and the right coil (2),
Coil for the left coil (1) and the right coil (2) power supply to generate electromagnetic field at the molybdenum filament channel (5)
Power supply circuit, and
Described matrix is driven to surround the power-equipment of the molybdenum filament channel (5) rotation.
2. the device of automatic inhibition molybdenum filament form and position according to claim 1, which is characterized in that the power-equipment is
Stepper motor (4).
3. the device of automatic inhibition molybdenum filament form and position according to claim 2, which is characterized in that the stepper motor
(4) motor driver and the coil power supply circuit with the digital control system circuit connection of nc wire-cutting.
4. the device of automatic inhibition molybdenum filament form and position according to claim 1, which is characterized in that the left coil (1)
It is coaxially arranged with the right coil (2), and the hole of the axis of the left coil (1) and the right coil (2) and the through-hole
Axis intersects vertically.
5. the device of automatic inhibition molybdenum filament form and position according to claim 4, which is characterized in that the left coil (1)
It is arranged symmetrically centered on the axially bored line of the through-hole with the right coil (2).
6. the device of automatic inhibition molybdenum filament form and position according to claim 1, which is characterized in that described matrix includes:
Magnet ring (6),
The slip ring (3) being coaxially fixed below the magnet ring (6),
It is fixed on the outer gear ring (14) of the slip ring (3) periphery, and
Two magnetic poles (7) mutually fixed with the magnet ring (6) and radially-inwardly stretched out；
The left coil (1) and the right coil (2) are respectively wound around on two magnetic poles (7), and the power-equipment is logical
Gear drive (15) and the outer gear ring (14) are crossed to be sequentially connected.
7. the device of automatic inhibition molybdenum filament form and position according to claim 6, which is characterized in that further include a pedestal
(8), the slip ring (3) is slidably connected with pedestal pivot.
8. the device of automatic inhibition molybdenum filament form and position according to claim 6, which is characterized in that further include magnetic shielding cover
(9), the magnetic shielding cover (9) is by the left coil (1), the right coil (2), the magnet ring (6), the slip ring (3) and institute
Two magnetic poles (7) stated accommodate in the inner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820370275.8U CN208866547U (en) | 2018-03-19 | 2018-03-19 | A kind of device of automatic inhibition molybdenum filament form and position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820370275.8U CN208866547U (en) | 2018-03-19 | 2018-03-19 | A kind of device of automatic inhibition molybdenum filament form and position |
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| Publication Number | Publication Date |
|---|---|
| CN208866547U true CN208866547U (en) | 2019-05-17 |
Family
ID=66460937
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820370275.8U Withdrawn - After Issue CN208866547U (en) | 2018-03-19 | 2018-03-19 | A kind of device of automatic inhibition molybdenum filament form and position |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108237276A (en) * | 2018-03-19 | 2018-07-03 | 苏州科技大学 | A kind of device and method of automatic inhibition molybdenum filament form and position |
| CN113828809A (en) * | 2021-10-30 | 2021-12-24 | 苏州科技大学 | Lathe tool clamping mechanism for lathe |
-
2018
- 2018-03-19 CN CN201820370275.8U patent/CN208866547U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108237276A (en) * | 2018-03-19 | 2018-07-03 | 苏州科技大学 | A kind of device and method of automatic inhibition molybdenum filament form and position |
| CN113828809A (en) * | 2021-10-30 | 2021-12-24 | 苏州科技大学 | Lathe tool clamping mechanism for lathe |
| CN113828809B (en) * | 2021-10-30 | 2022-07-22 | 苏州科技大学 | Lathe tool clamping mechanism for lathe |
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