CN205927396U - Numerical control wire cut electrical discharge machining molybdenum filament on - line measuring device - Google Patents
Numerical control wire cut electrical discharge machining molybdenum filament on - line measuring device Download PDFInfo
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- CN205927396U CN205927396U CN201620791938.4U CN201620791938U CN205927396U CN 205927396 U CN205927396 U CN 205927396U CN 201620791938 U CN201620791938 U CN 201620791938U CN 205927396 U CN205927396 U CN 205927396U
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Abstract
The utility model discloses a numerical control wire cut electrical discharge machining molybdenum filament on - line measuring device, the device is including high frequency cutting power, go up the coil assembly, should go up the coil assembly and arrange the radial outside of molybdenum filament straight line active section, and be located by the cutting work piece with between the molybdenum filament straight line active section upper end, lower coil group, this lower coil group arranges the radial outside of molybdenum filament straight line active section, and be located by the cutting work piece with under the molybdenum filament straight line active section between the tip, processing circuit, this processing circuit with go up coil assembly and lower coil group homogeneous phase even to can acquire and compare go up the induced voltage who produces in coil assembly and the lower coil group. The device can on line measurement process station molybdenum filament position the change to important information such as molybdenum filament shake and inclination is obtained through analysis processes.
Description
Technical field
This utility model is related to wire cutting machine tool field and in particular to a kind of nc wire-cutting molybdenum filament on-line measurement fills
Put.
Background technology
Linear cutter is to make electrode using the fine wire of continuous moving, and workpiece is carried out with pulse spark electric discharge removal gold
Belong to or excision forming, this equipment is mainly used in processing superhard steel, hard alloy, variously-shaped complicated and accurate tiny work
Part.Wire electrode is that (hereinafter referred to as molybdenum filament, this patent is mainly used in hurrying up a kind of fine wire being fabricated by by noble metals such as molybdenums
Silk cutting machine tool), molybdenum filament is discharged with workpiece by medium (working solution), and corrosion metal reaches the purpose of excision forming.
In recent years, with the continuous development of automatic technology, various digital control wire-electrode cutting equipment in electric machining industry by
Gradually popularize, the technology such as its mechanical precision, position-force control, high frequency electric source has all reached higher level, but, put as processing
The molybdenum filament of electrode, not only diameter little, along axial-movement, and be in the spray regime of working solution, its measuring environment is severe,
On-line checking difficulty is big, and technology also relatively lags behind, and molybdenum filament on-line checking is always and hinders the gentle shadow of linear cutting equipment Automated water
Ring the one of the main reasons of machining accuracy.Existing wire cutting machine tool, does not have processing sections molybdenum filament on-line checking function so that lathe warp
Below Chang Yinwei reason leads to fracture of wire to produce serious consequence：
1st, due to middle wire cutting machine (following wire cutting machine tool is middle wire cutting machine), molybdenum filament in processing
Doing high-speed motion, each part in wire feeder changes the molybdenum filament direction of motion continuous again, so that molybdenum filament is produced
Radial vibration or shake (all referred to as shaking below), once jitter amplitude exceedes wire electrode elastic limit, will result in fracture of wire.
2nd, molybdenum filament, after processing a period of time, is fluffed due to the stretching of itself.When elongation is larger, molybdenum filament can be aggravated
Shake, leads to wire unstable and causes fracture of wire.
3rd, the installation of wire cutting molybdenum filament is too loose, then molybdenum filament shake is severe, not only can directly affect workpiece surface roughness, seriously
When can cause fracture of wire.
4th, lathe keeps off the place that silk part and guide wheel etc. are contacted with molybdenum filament, and use time length all can produce abrasion, once
Guide wire apparatus deterioration in accuracy, can increase the shake of wire electrode, destroy the normal clearance of spark discharge, cause high current to concentrate and put
Electricity, so that the probability of fracture of wire increases.
5th, in setting for machine operation, due to molybdenum filament is not carried out with protection detection, once maloperation or abnormal feelings occur
Condition molybdenum filament is easy to be pulled by travelling workpiece and breaks.
Once there is fracture of wire in wire cutting machine tool, not only will consume substantial amounts of wire electrode, increases production cost, but also can be tight
Ghost image rings wire cutting production efficiency and reduces workpiece surface quality, or even the serious consequence that workpiece is scrapped.
Existing wire cutting machine tool, molybdenum filament detection method during processing has two kinds：
1st, filament failure is reported to the police, and that is, molybdenum filament once there occurs fracture of wire, fracture of wire switch closure, sends stubble warning device prompting letter
Breath；
2nd, mechanical tension detection means, is arranged on the horizontal wire part of wire feeder, opens for on-line checking molybdenum filament
Power.
Above two method, the first, after there is fracture of wire, just sends failure alarm signal, cannot accomplish pre- online at all
Survey fracture of wire function；Second detection method, due to being detected using mechanical tension, volume is big, cannot be arranged on molybdenum filament at all and add
Workshop section, can be only installed on horizontal arm, indirectly measurement molybdenum filament ruuning situation, due to processing sections molybdenum filament in the middle of be separated with multiple other
Wire part, this method one side certainty of measurement is poor, and another aspect response speed is slow.
The problems referred to above are not effectively improved for many years always.Therefore, change the backward face of molybdenum filament online measuring technique
Looks, make that detection technique is more scientific, wisdom, automatization and precision have important meaning to numerical control line cutting technology progress
Justice.
Utility model content
This utility model purpose is：For the problems referred to above, this utility model provides a kind of nc wire-cutting molybdenum filament online
Measurement apparatus, this device is capable of the change of on-line measurement processing sections molybdenum filament position, obtains the important informations such as molybdenum filament shake and gradient.
The technical solution of the utility model is：
A kind of nc wire-cutting molybdenum filament on-line measurement device, including high frequency cutting power supply, this high frequency cutting power supply is to number
The upper and lower ends of the molybdenum filament straight line active section of control wire cutting machine are passed through the high-frequency pulse current of the cut workpiece of flow direction, also include：
Upper set of coils, this upper set of coils is arranged in the radial outside of described molybdenum filament straight line active section, and is located at described being cut
Cut between workpiece and described molybdenum filament straight line active section upper end；
Lower coil group, this lower coil group is arranged in the radial outside of described molybdenum filament straight line active section, and is located at described being cut
Cut between workpiece and described molybdenum filament straight line active section bottom；
Signal processing circuit, this signal processing circuit is all connected with described upper set of coils and lower coil group, and can obtain
With the induced voltage producing in relatively described upper set of coils and lower coil group.
It is connected with differential amplifier circuit between described upper set of coils and lower coil group and described signal processing circuit.
Described upper set of coils is made up of X spaced one on the other to coil and Y-direction coil, and described X is to reaching the standard grade
Circle is made up of the left coil I of arc-shaped structure and the right coil I of arc-shaped structure, described left coil I and right coil I horizontal symmetry
It is arranged in the radial direction left and right sides of described molybdenum filament straight line active section；Described Y-direction coil is by the front coil I of arc-shaped structure
(203) constitute with the rear coil I of arc-shaped structure, and described front coil I and rear coil I horizontal symmetry to be arranged in described molybdenum filament straight
The footpath of line active section both sides forwards, backwards；
Described lower coil group is made up of X spaced one on the other to lower coil and Y-direction lower coil, and described X is to offline
Circle is made up of the left coil II of arc-shaped structure and the right coil II of arc-shaped structure, described left coil II and right coil II level
It is arranged symmetrically in the radial direction left and right sides of described molybdenum filament straight line active section；Described Y-direction lower coil is by the front coil of arc-shaped structure
II and the rear coil II of arc-shaped structure constitute, and described front coil II and rear coil II horizontal symmetry to be arranged in described molybdenum filament straight
The footpath of line active section both sides forwards, backwards；
Also include pedestal and the lower pedestal of annular in annular spaced apart one on the other, detachable on described annular upper pedestal
The upper magnetic core I of annular and the upper magnetic core II of annular are installed, described upper magnetic core I be located at described upper magnetic core II top,
And the two is coaxially arranged with the upper pedestal of described annular；The lower magnetic core I of annular is removably provided with the lower pedestal of described annular
With the lower magnetic core II of annular, described lower magnetic core I is located at the top of described lower magnetic core II, and the two and pedestal under described annular
Coaxially arranged；
Described left coil I and right coil I are symmetrically wrapped on described upper magnetic core I, described front coil I and rear coil
Symmetrically it is wrapped on described upper magnetic core II before and after I；
Described left coil II and right coil II are symmetrically wrapped on described lower magnetic core I, described front coil II and after
Symmetrically it is wrapped on described lower magnetic core II before and after coil II.
The described upper pedestal of annular and annular lower pedestal are marble material.
Form, on described annular upper pedestal, the upper gear liquid cover covering on outside described upper set of coils, become on pedestal under described annular
Type has the lower block liquid cover covering on outside described lower coil group.
Described upper set of coils, lower coil group, upper magnetic core I, the outer surface of upper magnetic core II, lower magnetic core I and lower magnetic core II all apply
It is covered with one layer of painting damp proof insulation material.
Described upper set of coils is identical with the structure of lower coil group, and the two in the vertical direction overlaps and arranges.
Described signal processing circuit is connected with the digital control system of described nc wire-cutting.
The utility model has the advantages that：
1st, the high speed axis of molybdenum filament moves, and is cooperated by part each in wire feeder and jointly participates in completing, therefore,
Motion in wire feeder is more complicated, such as：Due to the circular runout of wire storage cylinder and guide wheel and the axle of axial float, molybdenum filament
When the deformation of line, the abrasion of radial direction, the abrasion of wire feeder loosen and process, the effect such as Discharge Force, all may affect the footpath of molybdenum filament
To stability, can timely and accurately be grasped molybdenum filament and shake and oblique with the state of on-line checking molybdenum filament radial motion by this device
The data such as degree, note abnormalities and alarm can do respective handling it is achieved that on-line prediction fracture of wire defencive function.
2nd, the radial stability of this device direct measurement processing sections molybdenum filament, connects than the machinery being mounted remotely from processing sections molybdenum filament
The high precision of touch strain measuring method, response speed are fast.
3rd, this device can carry out the jitter measurement of orthogonal both direction simultaneously, and can obtain molybdenum filament shake track in flat field
Information, this information is conducive to researching and analysing further reasonability, the science of wire feeder.
4th, this device can realize gradient on-line checking, once finding that slope deviation is excessive, prompting immediately is reported to the police.
When the 5th, passing through this device to leading to molybdenum filament shake to become big because of Discharge Force effect, can automatically reduce high frequency electric source output
Power, thus be conducive to raising machining accuracy and minimizing to blow an occurrence probability.
6th, this device adopts non-cpntact measurement, on the one hand, avoid the error being contacted caused by molybdenum filament by measurement apparatus；Separately
On the one hand, processing sections molybdenum filament is often in moist adverse circumstances, and alternate manner sensor is difficult to accomplish on-line measurement.
7th, in setting for machine operation or generation abnormal conditions, once molybdenum filament is pulled by workpiece being easy to be pulled off, this dress
Put can in time detection to go out molybdenum filament gradient excessive, immediately stop table mobile it is achieved that molybdenum filament pulls protection.
8th, this device can carry out joint control with tension force and taper degree control device, can when finding the exceptions such as molybdenum filament shake and gradient
It is automatically adjusted, improve the intelligent level of equipment.
9th, processing sections molybdenum filament is implemented with radial position detection, such as：The parameters such as shake, gradient and tension force, are linear cutting equipment
Molybdenum filament status information promptly and accurately is provided.
Brief description
Below in conjunction with the accompanying drawings and embodiment is further described to this utility model：
Fig. 1 is that the overall structure of this utility model embodiment this nc wire-cutting molybdenum filament on-line measurement device is illustrated
Figure；
Fig. 2 is that the partial structurtes of this utility model embodiment this nc wire-cutting molybdenum filament on-line measurement device are illustrated
Figure；
Wherein：A- is cut workpiece, 1- molybdenum filament, 101- molybdenum filament straight line active section, 2- upper set of coils, 201- left coil I,
The right coil of 202- I, coil I before 203-, 3- lower coil group, 301- left coil II, the right coil of 302- II, coil II before 303-, 4-
High frequency cutting power supply, 5- signal processing circuit, 501- differential amplifier circuit, pedestal in 8- annular, the lower pedestal of 9- annular, on 10a-
Magnetic core I, the upper magnetic core of 10b- II, magnetic core I under 11a-, magnetic core II under 11b-, 12- wire slide carriage, 13- wire storage cylinder, the upper pair of 14- is led
Wheel, secondary guide wheel, 16- tensioner, 17- upper block, 18- lower tumbler, the upper conducting block of 19- under 15-, conducting block under 20-, on 21-
Filar guide, filar guide under 22-, 23- converter, 24- motor, 25- digital control system, 26- stepper motor driver, 27- taper is adjusted
Regulating device.
Specific embodiment
Fig. 1 and Fig. 2 illustrates one of this utility model this nc wire-cutting molybdenum filament on-line measurement device specifically in fact
Apply example it is well known that the molybdenum filament 1 of nc wire-cutting includes the molybdenum filament straight line active section 101 for cutting workpiece, and this device
Main Function be that this molybdenum filament straight line active section 101 radial position of on-line measurement changes, and then analyze and process and obtain molybdenum filament and tremble
Move and the important informations such as gradient.
The line cutting processing of nc wire-cutting is by the use of mobile molybdenum filament as electrode " knife ", the quilt with metal at present
There is electric discharge corrosion in cutting workpiece A, it is to transfer realization by the wire storage cylinder in wire feeder is positive and negative that molybdenum filament reciprocates.As Fig. 1
Shown, the wire feeder of nc wire-cutting includes：Converter 23, motor 24, wire slide carriage 12, wire storage cylinder 13, upper pair guide wheel
14th, lower pair guide wheel 15, tensioner 16, upper block 17, lower tumbler 18, upper conducting block 19, lower conducting block 20, upper filar guide 21 and
Lower filar guide 22.During cutting processing, molybdenum filament electrode is moved along its axis direction with certain speed, and it constantly enters and leaves joint-cutting
Interior region of discharge.
Because wire storage cylinder drives molybdenum filament doing the movement of high speed axis, each part in wire feeder changes molybdenum filament continuous again
The direction of motion, simultaneously because the circular runout of wire storage cylinder and guide wheel and axial float, the axis deformation of molybdenum filament, the mill of radial direction
Discharge Force effect etc. when damage, the abrasion of wire feeder loosen and process, above-mentioned situation all inevitably leads to molybdenum filament and produces footpath
To shake it is easy to produce the problems such as secondary discharge or short circuit, so that impact working (machining) efficiency and product quality, or even once tremble
Dynamic amplitude exceedes wire electrode elastic limit, will result in the serious consequence of fracture of wire.Therefore, processing sections molybdenum filament on-line checking is always
NC Electrical Manufacture Tool key technical problem urgently to be resolved hurrily.And this nc wire-cutting molybdenum filament shown in Fig. 1～Fig. 2 is online
Measurement apparatus are developed exactly for solving this technical problem.
The present embodiment this nc wire-cutting molybdenum filament on-line measurement device mainly includes：High frequency cutting power supply 4, coil
Group 2, lower coil group 3 and signal processing circuit 5.Wherein：High frequency cutting power supply 4 is that existing nc wire-cutting has part by oneself, its
It is passed through the high-frequency pulse current of the cut workpiece A of flow direction for the upper and lower ends to described molybdenum filament straight line active section 101, thus with
There is electric discharge corrosion in cut workpiece A, to cut workpiece.Upper set of coils 2 is arranged in the radial direction of described molybdenum filament straight line active section 101
Outside, and be located between described cut workpiece A and described molybdenum filament straight line active section 101 upper end, it is specifically located at seal wire
The lower section of device 21.According to galvanomagnetic-effect, in cutting process, in molybdenum filament straight line active section 101, stream has high-frequency pulse current, thus
Produce alternating magnetic field about, and then produce induced voltage in this upper set of coils 2.It is straight that lower coil group 3 is arranged in described molybdenum filament
The radial outside of line active section 101, and be located between described cut workpiece A and described molybdenum filament straight line active section 101 bottom,
It is specifically located at the top of lower filar guide 22.According to galvanomagnetic-effect, in cutting process, in molybdenum filament straight line active section 101, stream has height
Frequency pulse current, thus producing alternating magnetic field about, and then also produce induced voltage in this lower coil group 2.At signal
Reason circuit 5 is all connected with described upper set of coils 2 and lower coil group 3, and can obtain and compare described upper set of coils 2 and offline
Induced voltage in circle group 3.This described upper set of coils 2 is identical with the structure of lower coil group 3, and the two adopts microstructure design system
Make the concordance it can be ensured that the two structure, and upper set of coils 2 and lower coil group 3 are in vertical direction (Z-direction) coincidence cloth
Put, that is, upper set of coils 2 and lower coil group 3 are in X, Y-direction position consistency.
The operation principle of this device is as follows：
Molybdenum filament electrode (also known as line electrode) basis is dither current as flow through in wire, and line electrode always, this
When create alternating magnetic field around molybdenum filament straight line active section 101, in the size of this magnetic field intensity and molybdenum filament straight line active section 101
Electric current I relevant with conductor length r, that is,
B=f (I, r) (1)
In cutting on line processing, in order to improve the electric current passing through in molybdenum filament straight line active section 101, (high frequency electric source is from belt current
Measuring circuit, that is, known to electric current), to cut workpiece electrical discharge indeed through upper and lower section of molybdenum filament (with molybdenum filament and cut work
Part contact point is separation, and molybdenum filament straight line active section 101 is divided into two sections) (upper and lower two conducting blocks of parallel operation
Jointly power to cut workpiece, as shown in Figure 1), the molybdenum filament at upper set of coils 2 and the molybdenum filament at lower coil group 3 are equivalent to two
Root parallel conducting wire, that is, upper-lower section molybdenum filament size of current is identical, molybdenum filament at molybdenum filament and lower coil group 3 therefore at upper set of coils 2
In the size of current passed through be the same, by the process to two paths of data, thus cancellation current and other disturbances are to faradism
The impact of pressure, so in induced voltage and lower coil group 3 in upper set of coils 2 ratio of induced voltage and difference be only and molybdenum filament straight line
The position of active section 101 is related, once in cutting processing, occurring leading to molybdenum filament upper and lower radial displacement deviation because of a variety of causes, all
Can be showed with the size form of induced voltage in coil.Induced voltage in induced voltage and lower coil group 3 in upper set of coils 2
Ratio and difference be need critical data to be processed, be utilized respectively this ratio and difference data can eliminate various disturbances to survey
The impact of amount, and more accurate to the comprehensive descision of measurement result using above two data.If, molybdenum filament straight line active section
101 do not shake, then by signal processing circuit 5, the multiple ratio obtaining and difference relative measurements are consistent；When
Because a variety of causes molybdenum filament straight line active section 101 produces shake, then it is located at reaching the standard grade of molybdenum filament straight line active section 101 first half office
In circle group 2 induced voltage and be located at molybdenum filament straight line active section 101 lower half office lower coil group 3 in induced voltage ratio and
Difference multiple measurement results are inconsistent, and this change can be accurately detected by signal processing circuit 5, when detected value exceedes
Given threshold is then reported to the police and respective handling.
In order to improve the certainty of measurement to molybdenum filament straight line active section jitter conditions, simultaneously facilitate and calculate the work of molybdenum filament straight line
The gradient of section, described upper set of coils 2 and coil 3 are arranged to following version by the present embodiment：
Upper set of coils 2 is made up of X spaced one on the other to coil and Y-direction coil, described X to coil by
Right coil I 202 composition, described left coil I 201 and the right coil I 202 of the left coil I 201 of arc-shaped structure and arc-shaped structure
Horizontal symmetry is arranged in the radial direction left and right sides of described molybdenum filament straight line active section 101.Y-direction coil is by the front of arc-shaped structure
Enclose the rear coil I (not shown) composition of I 203 and arc-shaped structure, and described front coil I 203 and rear coil I horizontal symmetry
It is arranged in the footpath both sides forwards, backwards of described molybdenum filament straight line active section 101.
Lower coil group 3 is made up of X spaced one on the other to lower coil and Y-direction lower coil, described X to lower coil by
Right coil II 302 composition, described left coil II 301 and the right coil of the left coil II 301 of arc-shaped structure and arc-shaped structure
II 302 horizontal symmetry are arranged in the radial direction left and right sides of described molybdenum filament straight line active section 101；Described Y-direction lower coil is by circular arc
Rear coil II (not shown) of the front coil II 303 of structure and arc-shaped structure is constituted, and described front coil II 303 and after
Coil II horizontal symmetry is arranged in the footpath both sides forwards, backwards of described molybdenum filament straight line active section 101；
During work, X to coil and X to lower coil corresponding for measurement molybdenum filament straight line active section 101 in X-direction
Gradient, Y-direction coil corresponding with Y-direction lower coil for measure molybdenum filament straight line active section 101 gradient in the Y direction.
This device also includes pedestal 8 and the lower pedestal 9 of annular, described annular above pedestal in annular spaced apart one on the other
Upper magnetic core I 10a of annular and upper magnetic core II 10b of annular is removably installed on 8, described upper magnetic core I 10a is located at institute
State the top of magnetic core II 10b, and the two is coaxially arranged with the upper pedestal 8 of described annular；On the lower pedestal 9 of described annular removably
Lower magnetic core I 11a of annular and lower magnetic core II 11b of annular is installed, described lower magnetic core I 11a is located at described lower magnetic core II
The top of 11b, and the two is coaxially arranged with the lower pedestal 9 of described annular.
Described left coil I 201 and right coil I 202 are symmetrically wrapped on described upper magnetic core I 10a, described front coil
I 203 and rear coil I before and after be symmetrically wrapped on described upper magnetic core II 10b.
Described left coil II 301 and right coil II 302 are symmetrically wrapped on described lower magnetic core I 11a, described front
Symmetrically it is wrapped on described lower magnetic core II 11b before and after enclosing II 303 and rear coil II.
And the radially opposite sides of the upper pedestal 8 of described annular and the lower pedestal 9 of annular are provided with installing arm, installing arm for
Pedestal in annular 8 and the lower pedestal 9 of annular are fixed on corresponding fixing body it is ensured that the position of upper set of coils 2 and lower coil group 3
Put stability.
The coil of upper set of coils 2 and lower coil group 3 all using paired circular arc symmetrical structure, not only may be used by the present embodiment
With using differential motion amplifying unit effective suppression to common-mode signal, but also position differential signal can be amplified, be improve
The precision of overall measuring circuit.
Described signal processing circuit 5 includes the differential amplifier circuit 501 being connected with described upper set of coils 2 and lower coil group 3.
During actual measurement, difference P1 of induced voltage, front coil I 203 and rear line in left coil I 201 and right coil I 202
Difference P3 of induced voltage, front coil II 303 in difference P2 of induced voltage, left coil II 301 and right coil II 302 in circle I
With difference P4 of induced voltage in rear coil II, after the signal filtering of signal processing circuit 5, conditioning and A/D change, calculate
The ratio of P1 and P3 and radial position difference (electric current it is known that position difference hereinafter referred to as difference), the ratio of P2 and P4 and radially
The ratio of position difference, wherein P1 and P3 and difference synthesis reflect the gradient in X-direction for the molybdenum filament straight line active section 101, P2 and P4
Ratio and difference synthesis reflection molybdenum filament straight line active section 101 gradient in the Y direction.If molybdenum filament straight line active section 101 does not have
Shake, then the multiple measurement results of P1 and P3 ratio and difference, P2 and P4 ratio and difference are consistent；When due to various
Reason molybdenum filament straight line active section 101 produces shake, then the multiple measurement knot of P1 and P3 ratio and difference, P2 and P4 ratio and difference
Really inconsistent, then reported to the police and respective handling when detected value exceedes given threshold.
And, annular upper pedestal 8 described in the present embodiment and all exhausted magnetic insulation of the lower pedestal 9 of annular are marble material,
And described upper set of coils 2 is arranged in the radial outside of pedestal 8 central through hole in annular, described lower coil group 3 is arranged in ring
The radial outside of pedestal 9 central through hole under shape, to prevent collision upper set of coils and lower coil group in molybdenum filament processing.
Additionally, forming the upper gear liquid cover covering on outside described upper set of coils 2, under described annular on described annular upper pedestal 8
The lower block liquid cover covering on outside described lower coil group 3 is formed on pedestal 9.Described upper gear liquid cover and lower block liquid cover are used for preventing from cutting
During working solution be splashed in upper set of coils 2 and lower coil group 3.For protection against the tide, the present embodiment is in described upper set of coils 2, offline
Circle group 3, the outer surface of upper magnetic core I 10a, upper magnetic core II 10b, lower magnetic core I 11a and lower magnetic core II 11b are coated with one layer and apply to be prevented
Damp insulant.
In addition, described signal processing circuit 5 is connected by the present embodiment with the digital control system 25 of wire cutting machine tool itself, actual
During application, signal processing circuit 5 can with accurately measure molybdenum filament straight line active section upper and lower end X, Y-direction radial position
Deviation, then completes molybdenum filament shake through digital control system and gradient calculates, thus can be completed by tension mechanism within the specific limits
Jitter suppression, or control motor to complete the gradient adjustment to the work of molybdenum filament straight line.
Certainly, above-described embodiment is only that technology design of the present utility model and feature are described, its object is to allow people's energy
Solution much of that content of the present utility model is simultaneously implemented according to this, can not limit protection domain of the present utility model with this.All according to this
Equivalent transformation or modification that the spirit of utility model main technical schemes is done, all should cover in protection of the present utility model
Within the scope of.
Claims (9)
1. a kind of nc wire-cutting molybdenum filament on-line measurement device, including high frequency cutting power supply (4), this high frequency cutting power supply (4)
It is passed through the high-frequency impulse of the cut workpiece (A) of flow direction to the upper and lower ends of molybdenum filament straight line active section (101) of nc wire-cutting
Electric current is it is characterised in that this device also includes：
Upper set of coils (2), this upper set of coils (2) is arranged in the radial outside of described molybdenum filament straight line active section (101), and is located at institute
State between cut workpiece (A) and described molybdenum filament straight line active section (101) upper end；
Lower coil group (3), this lower coil group (3) is arranged in the radial outside of described molybdenum filament straight line active section (101), and is located at institute
State between cut workpiece (A) and described molybdenum filament straight line active section (101) bottom, this lower coil group (3) and described coil
The structure of group (2) is identical, and the two in the vertical direction overlaps and arranges；
Signal processing circuit (5), this signal processing circuit (5) is all connected with described upper set of coils (2) and lower coil group (3), and
Can obtain and compare the induced voltage producing in described upper set of coils (2) and lower coil group (3).
2. nc wire-cutting molybdenum filament on-line measurement device according to claim 1 it is characterised in that：Described signal processing
Circuit (5) includes the differential amplifier circuit (501) being connected with described upper set of coils (2) and lower coil group (3).
3. nc wire-cutting molybdenum filament on-line measurement device according to claim 1 and 2 it is characterised in that：Described reach the standard grade
Circle group (2) is made up of X spaced one on the other to coil and Y-direction coil, and described X is to coil by arc-shaped structure
Left coil I (201) and the right coil I (202) of arc-shaped structure constitute, described left coil I (201) and right coil I (202) water
The flat radial direction left and right sides being arranged symmetrically in described molybdenum filament straight line active section (101)；Described Y-direction coil is by arc-shaped structure
The rear coil I of front coil I (203) and arc-shaped structure is constituted, and described front coil I (203) and rear coil I horizontal symmetry arrangement
Footpath both sides forwards, backwards in described molybdenum filament straight line active section (101)；
Described lower coil group (3) is made up of X spaced one on the other to lower coil and Y-direction lower coil, and described X is to lower coil
It is made up of the left coil II (301) of arc-shaped structure and the right coil II (302) of arc-shaped structure, described left coil II (301)
It is arranged in the radial direction left and right sides of described molybdenum filament straight line active section (101) with right coil II (302) horizontal symmetry；Under described Y-direction
Coil is made up of the front coil II (303) of arc-shaped structure and the rear coil II of arc-shaped structure, and described front coil II (303)
It is arranged in the footpath both sides forwards, backwards of described molybdenum filament straight line active section (101) with rear coil II horizontal symmetry.
4. nc wire-cutting molybdenum filament on-line measurement device according to claim 3 it is characterised in that：Also include one on one
Under pedestal (8) and the lower pedestal (9) of annular in annular spaced apart, the upper pedestal (8) of described annular is removably provided with circle
The upper magnetic core I (10a) of annular and the upper magnetic core II (10b) of annular, described upper magnetic core I (10a) is located at described upper magnetic core II
(10b) top, and the two is coaxially arranged with the upper pedestal (8) of described annular；Removably install on the lower pedestal (9) of described annular
There are the lower magnetic core I (11a) of annular and the lower magnetic core II (11b) of annular, described lower magnetic core I (11a) is located at described lower magnetic core
The top of II (11b), and the two is coaxially arranged with the lower pedestal (9) of described annular；
Described left coil I (201) and right coil I (202) are symmetrically wrapped on described upper magnetic core I (10a), described front
Symmetrically it is wrapped on described upper magnetic core II (10b) before and after circle I (203) and rear coil I；
Described left coil II (301) and right coil II (302) are symmetrically wrapped on described lower magnetic core I (11a), described before
Symmetrically it is wrapped on described lower magnetic core II (11b) before and after coil II (303) and rear coil II.
5. nc wire-cutting molybdenum filament on-line measurement device according to claim 4 it is characterised in that：Described annular above base
Frame (8) and the lower pedestal (9) of annular are marble material.
6. nc wire-cutting molybdenum filament on-line measurement device according to claim 4 it is characterised in that：Described annular above base
The upper gear liquid cover covering on described upper set of coils (2) outward is formed on frame (8), the lower pedestal (9) of described annular forms and covers on institute
State lower coil group (3) lower block liquid cover outward.
7. nc wire-cutting molybdenum filament on-line measurement device according to claim 4 it is characterised in that：Described upper set of coils
(2), lower coil group (3), upper magnetic core I (10a), the appearance of upper magnetic core II (10b), lower magnetic core I (11a) and lower magnetic core II (11b)
Face is coated with one layer of painting damp proof insulation material.
8. nc wire-cutting molybdenum filament on-line measurement device according to claim 1 and 2 it is characterised in that：Described reach the standard grade
Circle group (2) is identical with the structure of lower coil group (3), and the two in the vertical direction overlaps and arranges.
9. nc wire-cutting molybdenum filament on-line measurement device according to claim 1 and 2 it is characterised in that：Described signal
Process circuit (5) is connected with the digital control system (25) of described nc wire-cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620791938.4U CN205927396U (en) | 2016-07-26 | 2016-07-26 | Numerical control wire cut electrical discharge machining molybdenum filament on - line measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620791938.4U CN205927396U (en) | 2016-07-26 | 2016-07-26 | Numerical control wire cut electrical discharge machining molybdenum filament on - line measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205927396U true CN205927396U (en) | 2017-02-08 |
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|---|---|---|---|
| CN201620791938.4U Withdrawn - After Issue CN205927396U (en) | 2016-07-26 | 2016-07-26 | Numerical control wire cut electrical discharge machining molybdenum filament on - line measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216786A (en) * | 2016-07-26 | 2016-12-14 | 苏州科技大学 | Nc wire-cutting molybdenum filament on-line measurement apparatus and method |
-
2016
- 2016-07-26 CN CN201620791938.4U patent/CN205927396U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216786A (en) * | 2016-07-26 | 2016-12-14 | 苏州科技大学 | Nc wire-cutting molybdenum filament on-line measurement apparatus and method |
| CN106216786B (en) * | 2016-07-26 | 2018-05-22 | 苏州科技大学 | Nc wire-cutting molybdenum filament on-line measurement apparatus and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170208 Effective date of abandoning: 20180522 |