CN106735634B - Atomizer reverse taper holes Micro-edm Equipments based on electrode sidewall insulation - Google Patents
Atomizer reverse taper holes Micro-edm Equipments based on electrode sidewall insulation Download PDFInfo
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- CN106735634B CN106735634B CN201710052100.2A CN201710052100A CN106735634B CN 106735634 B CN106735634 B CN 106735634B CN 201710052100 A CN201710052100 A CN 201710052100A CN 106735634 B CN106735634 B CN 106735634B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/04—Electrodes specially adapted therefor or their manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
- B23H11/003—Mounting of workpieces, e.g. working-tables
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- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention discloses a kind of atomizer reverse taper holes Micro-edm Equipments based on electrode sidewall insulation, including quick traverse mechanism, micro-feeding device, workbench positioning device, work holder, the adjustable controllable type RC pulse power of open-circuit voltage dynamic and the lateral wall insulation electrode being arranged on bottom plate and support frame.The present invention improves the precision and efficiency of atomizer back taper hole machined, reduces the complexity of " reverse taper holes " processing unit (plant) and to the high-precision requirement of device, eliminates the low caused error of wire electrode rigidity.And lateral wall insulation electrode is used, non-insulated electrode processing can be eliminated as process time is elongated, " waist drum " phenomenon caused by processing inlet galvanic corrosion is excessive and galvanic corrosion product.Meanwhile using the condition do not discharged of electrode head electric discharge side, make galvanic corrosion product and eliminate in bottom electric discharge the situation of export processing deficiency.And the insulating layer then gradually galvanic corrosion when electrode base discharges, and then process satisfactory " reverse taper holes ".
Description
Technical field
The invention belongs to mechanical engineering fields, and in particular to a kind of atomizer reverse taper holes based on electrode sidewall insulation are fine
Electric discharge machining apparatus.
Background technique
An important branch of the Micro-EDM Machining Technology as advanced manufacturing technology, it has also become manufacturing technology field is not
The important component that can or lack.After 21 century, with new and high technologies such as information technology, material science and technologies
Development, Micro-EDM Machining Technology also develop towards deeper time, higher levels of direction.Although traditional fine electric spark
Processing technology is merged by the continuous renewal development of itself and with other the relevant technologies, is showed in some special manufacture fields
The advantages such as processing efficiency height are gone out, but there are still certain deficiencies for this technology.On the contrary, fine electric spark forming technique is logical
The Experience in Development for using for reference other processing technologies is crossed, just constantly to directions such as miniaturization, high efficiency, precise treatment, automation, intelligences
Development.
Micro EDM refers mainly to processing of the size less than 300 μm of axis hole, groove and type chamber etc..Realize fine electricity
One essential condition of spark processing is that process unit's (ablation amount discharged every time) is as small as possible, and process unit is only depended on
In the discharge energy of single pulse.And the advanced manufacturing technology of micro EDM " reverse taper holes " to diesel engine towards height
The high performance direction such as speed, high injection pressure, low emission, which is developed, to be concerned.Injector nozzle matching parts are to influence engine performance, service life
And the critical component of reliability, for the discharge coefficient and atomizing effect for being effectively improved Micro Holes of Nozzle course of injection, not only
It is required that its spray orifice aperture is less than 0.2mm, aperture is also required to gradually become smaller " reverse taper holes " to form 0 °~2 ° cone angles along injection direction,
To reach the discharge standard of Europe IV (state 4) or more.The processing that traditional mechanical drilling has been unable to satisfy the fine spray orifice of high standard needs
It asks.The fine spray orifice of electrical discharge machining with no Machining Forces, injection diameter is small, precision is higher, pressure chamber's impulse- free robustness, can be in heat
The advantages that handling post-processing.Company of Switzerland is integrated with the yaw tilt of rotating electrode wire on electric spark machine tool main shaft
Block processes 0 °~1.4 ° of cone-apex angle of back taper micropore.But practice have shown that the spinning of Micro Wire Electrode or guide sleeve is real
When existing reverse taper holes electro-discharge machining, since Micro Wire Electrode rigidity is low, spinning precision is difficult to control accurately, the random error of introducing
Biggish aperture and cone angle error are easily caused, and is difficult to continue feeding Micro Wire Electrode in rotation.Non-insulated electrode processing with
Process time is elongated, and " reverse taper holes " is caused excessively to make entrance excessive in processing inlet galvanic corrosion.Meanwhile with the carry out galvanic corrosion of processing
Product, which increases, can also discharge, and make reverse taper holes that " waist drum " shape be presented.Also, export processing is damaged due to non-insulated electrode end itself
Consumption becomes elongated and processes less, cannot form " reverse taper holes " of standard.It is gradually become smaller so processing aperture along injection direction
The qualification " reverse taper holes " of 0 °~2 ° cone angles of formation is to diesel engine just towards the high performance such as high speed, high injection pressure, low emission
Direction, which is developed, to be very important.
Summary of the invention
The purpose of the present invention is to provide a kind of atomizer reverse taper holes micro EDMs based on electrode sidewall insulation
Device, to overcome the problems of the prior art, the present invention improves the working efficiency in atomizer reverse taper holes process, reduces
Production cost, ensure that the quality of production, and reduce production safety hidden danger.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
Based on the atomizer reverse taper holes Micro-edm Equipments of electrode sidewall insulation, including bottom plate, it is arranged on bottom plate
There is the work holder for clamping atomizer, and it is fixed that the workbench positioned to work holder is equipped on bottom plate
Position device, is also connected with support frame on bottom plate, the quick traverse mechanism for feeder electrode and connection is equipped on support frame
Micro-feeding device on quick traverse mechanism, atomizer and electrode are respectively connected to the adjustable controllable type RC of open-circuit voltage dynamic
The anode and cathode of the pulse power；
The workbench positioning device includes the X that is arranged on bottom plate to slide plate, and X is on slide plate equipped with from XY to shaft
The XY of bearing support is connected with XY to servo motor to shaft coupling by XY to shaft to shaft, XY.
Further, XY to shaft be equipped with drive bevel gear, drive bevel gear by driven wheel of differential be connected to X to turn
One end of axis, the X is supported in X on slide plate to rotating shaft support plate and X to shaft bearing to shaft from X, and driven wheel of differential
And X is to being equipped with X to electromagnetic clutch between rotating shaft support plate, X is equipped with X to driving gear to the other end of shaft, and X is to sliding tooth
Wheel is meshed with X set on the bottom plate to rack gear；
X is equipped with Y-direction slide plate to slide plate, and Y-direction slide plate lower part is equipped with Y-direction rack gear, Y-direction rack gear be set to XY in the middle part of shaft
Y-direction driving gear be meshed, Y-direction drive gear side be equipped with Y-direction electromagnetic clutch.
Further, the work holder includes two otic placodes being symmetricly set on Y-direction slide plate, two otic placodes
It being connected by shaft, one end of shaft connects angled servo motor by shaft shaft coupling, it is also connected with angle bucket in shaft,
It is connected with the workpiece chuck for clamping atomizer on angle bucket, is connected with rotating servo motor on workpiece chuck.
Further, the XY is controlled to servo motor, angle servo motor and rotating servo motor by PLC.
Further, the quick traverse mechanism includes the lifter plate of connection on the support frame, and lifter plate passes through ball
Feed screw nut is connected with Z-direction ball screw, and the upper end of Z-direction ball screw is connected with Z-direction servo motor, Z-direction by Z-direction shaft coupling
The bottom of ball screw is connected with bottom plate.
Further, the micro-feeding device includes the guide cylinder being arranged on lifter plate, and guide cylinder lower end is equipped with and leads
To head, upper end, which is equipped with, fastens end cap, the second spring for being equipped with the first spring in guide head and being set on the inside of the first spring,
First spring and second spring top are equipped with spring base engaged therewith, and the outside of spring base is equipped with lower support sleeve, lower support sleeve
It is equipped with diaphragm spring, the upside of spring base is equipped with iron core base, and iron core base is equipped with the normally closed electromagnetic clamp for holding electrode, often
It closes electromagnetic clamp and is equipped with the diaphragm spring gland cooperated with diaphragm spring, be equipped with movable core winding on the inside of diaphragm spring gland,
And diaphragm spring edge is pressed with support sleeve, upper support sleeve inside and movable core winding top edge fit inside, upper support sleeve
Secured core winding is equipped between end cap fastening, in movable core winding inner hole, secured core winding inner hole and fastening end cap
The upper guide pipe for being oriented to electrode is provided in hole, the inside of guide head is equipped with the normally opened electromagnetism that power pole passes through
Folder, normally opened electromagnetic clamp upside are equipped with the lower guide pipe for being oriented to electrode.
Further, Z-direction servo motor is controlled by PLC.
Further, electrode is lateral wall insulation electrode.
Compared with prior art, the invention has the following beneficial technical effects:
Present invention layout is simple, compact-sized, reduces the overall dimensions of whole device.Using the electrode energy of side insulation
" waist caused by enough elongated excessive galvanic corrosion for making to process inlet generation prevented completely due to process time and galvanic corrosion product
Drum " phenomenon.Wire electrode is only fed in vertical direction, is eliminated electrode in previous processing and is brought in spinning since rigidity is low
Error.Meanwhile the condition that do not discharged using electrode head electric discharge side, add galvanic corrosion product to eliminate outlet in bottom electric discharge
The situation of work deficiency.And the insulating layer then gradually galvanic corrosion when electrode base discharges, and then process satisfactory " reverse taper holes ".
Further, fine electric spark is generated using the adjustable controllable type RC pulse power of open-circuit voltage dynamic, by adjusting
Depressor controls open-circuit voltage to change pulse energy, to realize the electro-discharge machining that energy gradually continuously enlarges.
Further, whole device power is provided by servo motor, and machinery inertial is small, and precision is high, makes whole device in work
It is reliable and stable during work, and improve the positioning accuracy of workpiece.
Further, Z-direction servo motor can drive ball screw, drive lifter plate along branch using the invertibity of its movement
Support guide groove quick and precisely moves up and down.And the band-type brake function of servo motor can then guarantee the hovering of lifter plate.
Further, the mating part of lifter plate and support frame is not only that lifter plate provides guiding role, and bears to rise
Moment of flexure caused by trigger structure self gravity drops, to reduce lifter plate to the active force of feed screw nut.
Further, micro-feed mechanism is by eliminating assembly using magnetic field repulses caused by two hot-wire coils in the same direction
The mechanical clearance of generation, prevents diaphragm spring from overturning, and realizes Fine Feed to squeeze diaphragm spring.Diaphragm spring and big little spring peace
There is certain decrement when dress.And little spring installation greatly is oppositely oriented, can prevent its de- seat winding.
Further, magnetic field repulses when the setting big little spring different in size for having certain pretightning force can eliminate first energization
Emergentness eliminates the mechanical clearance that assembly generates, and makes the elastic deformation of diaphragm spring softer, guarantees fine feeding
Stationarity.
Further, X is to slide plate and Y-direction slide plate using rack pinion bearing capacity is big, precision is high, speed is fast.Meanwhile
Workbench can realize the movement in two directions with a servo motor, reduce many and diverse degree of mechanism by utilizing electromagnetic clutch.
Further, the folder of atomizer center line Yu back taper centerline hole can be accurately controlled using angle servo motor
Angle.And rotating servo motor then can control atomizer axially to rotate around itself, to realize the processing of the more taper holes of one mouth of atomizer.
Further, all servo motors are connect with transmission shaft using shaft coupling, can be eliminated and be turned not high caused with precision
Error, reduce machine driven system vibration, reduce impact S.acus Linnaeus exact.Shaft coupling also has certain bumper and absorbing shock
Can, also have Overload Protection effect concurrently.
Detailed description of the invention
Fig. 1 is overall structure main view of the invention；
Fig. 2 is the C-C of overall structure main view of the invention to cross-sectional view；
Fig. 3 is the D-D of overall structure main view of the invention to cross-sectional view；
Fig. 4 is overall structure top view of the invention；
Fig. 5 is the sectional view along A-A of overall structure top view of the invention；
Fig. 6 is the B-B direction cross-sectional view of overall structure top view of the invention；
Fig. 7 is overall structure right view of the invention；
Fig. 8 is overall structure left view of the invention；
Fig. 9 is the top view of lifter plate of the invention；
Figure 10 is the right view of lifter plate of the invention；
Figure 11 is the top view of diaphragm spring of the invention；
Figure 12 is controllable type RC pulse power schematic diagram.
Wherein, 1, bottom plate, 2, XY to servo motor, 3, XY to shaft coupling, 4, XY to shaft, 5, X to shaft, 6, X is to turning
Axle bearing, 7, Z-direction ball screw, 8, guide head, 9, the adjustable controllable type RC pulse power of open-circuit voltage dynamic, 10, guide cylinder,
11, lifter plate, 12, fastening end cap, 13, Z-direction servo motor, 14, electrode, 15, support frame, 16, atomizer, 17, workpiece chuck,
18, angle bucket, 19, angle servo motor, 20, otic placode, 21, rotating servo motor, 22, Y-direction slide plate, 23, Y-direction rack gear, 24, Y
To driving gear, 25, X to slide plate, 26, normally opened electromagnetic clamp, the 27, first spring, 28, second spring, 29, lower guide pipe, 30, under
Support sleeve, 31, spring base, 32, iron core base, 33, diaphragm spring, 34, normally closed electromagnetic clamp, 35, diaphragm spring gland, 36, upper branch
Support set, 37, movable core winding, 38, secured core winding, 39, upper guide pipe, 41, Z-direction shaft coupling, 42, ball screw spiral shell
Mother, 43, X to rack gear, 44, XY to shaft bearing, 45, drive bevel gear, 46, Y-direction electromagnetic clutch, 47, driven wheel of differential,
48, X is to rotating shaft support plate, 49, X to electromagnetic clutch, 50, X is to driving gear, 51, shaft, 52, shaft shaft coupling.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing:
Referring to Fig. 1-Figure 11, based on the atomizer reverse taper holes Micro-edm Equipments of electrode sidewall insulation, including peace
Loaded on support frame 15 and bottom plate 1 quick traverse mechanism, micro-feeding device, workbench positioning device, work holder and
The adjustable controllable type RC pulse power 9 of open-circuit voltage dynamic being separately connected with atomizer 16 and electrode 14, further includes that side wall is exhausted
The electrode 14 of edge；Wherein, support frame 15 is set on bottom plate 1.
The adjustable controllable type RC pulse power 9 (such as Figure 12) of open-circuit voltage dynamic uses lesser discharge capacity C, (electric discharge
EnergyWherein C is discharge capacity, and V is open-circuit voltage) realize that fine electric spark discharges, and its open-circuit voltage V
Gradually persistently increased by the pressure regulator of process control, process unit's (ablation amount) also gradually persistently increases.Process unit is by small
Become larger, and then realizes the processing of reverse taper holes.
The electrode 14 of lateral wall insulation can eliminate non-insulated electrode processing as process time is elongated, process inlet galvanic corrosion
" waist drum " phenomenon caused by processing inlet excessive disadvantage and galvanic corrosion product caused by more.Electrode 14 is only in vertical direction
Feeding eliminates in previous processing electrode 14 due to the low error brought in spinning of rigidity.Meanwhile utilizing 14, electrode
The condition do not discharged of portion electric discharge side makes galvanic corrosion product and eliminates in bottom electric discharge the situation of export processing deficiency.And insulating layer
The then gradually galvanic corrosion when 14 bottom of electrode is discharged, and then process satisfactory micropore.
Quick traverse mechanism includes the Z-direction servo motor 13 being arranged on support frame 15, Z-direction servo motor 13 and Z-direction shaft coupling
Device 41 is connected, and Z-direction shaft coupling 41 is connected with Z-direction ball screw 7, and Z-direction ball screw 7 is connected with bottom plate 1.Servo motor, which has, to be embraced
Lock function can overcome the invertibity hovering lifter plate of ball screw when servo motor stalls.Meanwhile Z-direction ball screw 7 with
Ball screw nut 42 is connected, and ball screw nut 42 is connected with lifter plate 11, and lifter plate 11 is connected with support frame 15, lifter plate
Mating part with support frame 15 is not only that lifter plate 11 provides guiding role, and bears lifting plate mechanism self gravity and drawn
The moment of flexure risen, to reduce lifter plate 11 to the active force of feed screw nut.
Micro-feeding device includes the guide cylinder 10 being arranged on lifter plate 11, and 10 lower end of guide cylinder is equipped with guide head 8, the upper end
Equipped with fastening end cap 12.First spring 27 and second spring 28, the first spring 27 and second spring 28 and bullet are housed on guide head 8
Spring abutment 31 is connected.The emergentness of magnetic field repulses when first spring 27 different in size and second spring 28 can eliminate first energization,
The mechanical clearance that assembly generates is eliminated, prevents diaphragm spring 33 from overturning, and make the elastic deformation of diaphragm spring 33 softer,
Guarantee the stationarity of Fine Feed.8 periphery of guide head is equipped with lower support sleeve 30, lower 30 inner surface of support sleeve and 31 outer surface of spring base
Cooperation provides guiding role for movable core winding 37.Meanwhile lower support sleeve 30 is equipped with diaphragm spring 33.On spring base 31
Equipped with iron core base 32, normally closed electromagnetic clamp 34, and holding electrode 14 are housed on iron core base 32, normally closed electromagnetic clamp 34 is equipped with diaphragm bullet
Spring gland 35, the top edge pressure of diaphragm spring gland 35 on diaphragm spring 33, the inside of diaphragm spring gland 35 and movable core
Cooperate on the outside of winding 37.33 edge of diaphragm spring is pressed with support sleeve 36, upper 36 inside of support sleeve on movable core winding 37
Edge fit inside.Upper support sleeve 36 is connected with secured core winding 38, and secured core winding 38 is connected with fastening end cap 12.It is living
37 inner hole of dynamic iron core winding, 38 inner hole of secured core winding and fastening 12 inner hole of end cap and upper guide pipe 39 cooperate, guide head 8
Inside is equipped with the normally opened electromagnetic clamp 26 that passes through of power pole 14, is equipped on the upside of normally opened electromagnetic clamp 26 for being oriented to electrode 14
Lower guide pipe 29.
Workbench positioning device includes the X that is arranged on bottom plate 1 to slide plate 25, and X is on slide plate 25 equipped with from XY to shaft axis
The XY of 44 supports is held to shaft 4, XY is connected with XY to shaft coupling 3 to 4 one end of shaft, and XY is to shaft coupling 3 and XY to servo motor 2
It is connected.Meanwhile XY is equipped with drive bevel gear 45 to shaft 4, drive bevel gear 45 is meshed with driven wheel of differential 47, from mantle
For gear 47 loaded on X to one end of shaft 5, X is supported in X to slide plate to rotating shaft support plate 48 and X to shaft bearing 6 to shaft 5 from X
On 25.In driven wheel of differential 47 and X to being equipped with X between rotating shaft support plate 48 to electromagnetic clutch 49.The other end of the X to shaft 5
Equipped with X to driving gear 50, X is meshed with the X being set on bottom plate 1 to rack gear 43 to driving gear 50.It is passed using rack-and-pinion
Dynamic bearing capacity is big, precision is high, speed is fast.X is equipped with Y-direction slide plate 22 to slide plate 25, and 22 lower part of Y-direction slide plate is equipped with Y-direction rack gear 23,
Y-direction rack gear 23 is meshed with set on XY to the Y-direction driving gear 24 at 4 middle part of shaft, and Y-direction drives 24 side of gear electric equipped with Y-direction
Magnet clutch 46.
Work holder includes two otic placodes 20 on Y-direction slide plate 22, and two otic placodes 20 are connected by shaft 51, shaft
51 are connected with shaft shaft coupling 52, and shaft shaft coupling 52 is connected with angle servo motor 19.Meanwhile shaft 51 and 18 phase of angle bucket
Even, angle bucket 18 is equipped with workpiece chuck 17, and workpiece chuck 17 clamps atomizer 16, workpiece chuck 17 and 21 phase of rotating servo motor
Even.The angle of atomizer center line Yu back taper centerline hole can be accurately controlled using angle servo motor.And rotating servo is electric
Machine then can control atomizer axially to rotate around itself, to realize the processing of atomizer more " reverse taper holes ".
Z-direction servo motor 13, XY are controlled to servo motor 2, angle servo motor 19 and rotating servo motor 21 by PLC
System, Z-direction servo motor 13 and angle servo motor 19 have band-type brake function.Micro-feed mechanism passes through movable core winding 37, consolidates
Electromagnetic force compression diaphragm spring 33, the first spring 27 and the second spring 28 that fixed core winding 38 generates are fed.Electrode 14
The side insulation electrode of epoxy resin is coated with for outside.Using the side insulation electrode for being coated with epoxy resin, can eliminate nonisulated
Electrode machining is elongated with process time, and " reverse taper holes " processing inlet is excessive caused by processing inlet galvanic corrosion is excessive lacks
" waist drum " phenomenon caused by point and galvanic corrosion product.Meanwhile the condition that do not discharged using electrode head electric discharge side, produce galvanic corrosion
Object eliminates the situation of export processing deficiency in bottom electric discharge.And the insulating layer then gradually galvanic corrosion when electrode base discharges, in turn
Process satisfactory " reverse taper holes ".
Operating process of the invention is described in detail below:
Firstly, atomizer 16 is held in workpiece chuck 17, angle is driven by 19 drive shaft 51 of angle servo motor
Bucket 18 rotates, to determine the angle of atomizer 16 center line and back taper centerline hole.By XY to servo motor 2 drive XY to turn
Axis 4 is respectively started or closes X to electromagnetic clutch 49 and Y-direction electromagnetic clutch 46 to drive X to drive to driving gear 50 and Y-direction
Moving gear 24, so that X be driven to carry out coarse positioning to Working position to slide plate 25 and Y-direction slide plate 22.
Secondly, driving Z-direction ball screw 7 by Z-direction servo motor 13, drive lifter plate 11 will by ball screw nut 42
The quick coarse feed of side insulation electrode 14 is to processable position.School is carried out to Working position to servo motor 2 by XY again at this time
It is quasi-.
It is contacted finally, being fed to electrode 14 by Z-direction servo motor 13 with workpiece, opening open-circuit voltage dynamic is adjustable can
The control formula RC pulse power 9 is gradually increased pulse energy in small energy range until completing the process disconnected by process control pressure regulator
Electricity, in processing, the galvanic corrosion product that generates can increase discharge range, using this feature can gradually expanded hole export processing diameter.
And the existing loss of electrode 14 itself, it can be lost by micro-feeding device dynamic feed compensation and complete process.In process
In, the logical same direction current being gradually increased of two coil windings generates same sex magnetic field, transports downwards to repel movable core winding 37
It is dynamic, diaphragm spring 33 is compressed by iron core base 32 and diaphragm spring gland 35, thus feeder electrode 14.When electrode 14 is lost to fastly
When cannot feed, normally opened electromagnetic clamp 26 is closed, and normally closed electromagnetic clamp 34 is opened, and is gradually reduced coil current, is kept diaphragm spring 33 extensive
It is multiple, normally closed electromagnetic clamp 34 is reclosed, normally opened electromagnetic clamp 26 is opened, above procedure is repeated and completes Fine Feed, until completing the process.
Claims (8)
1. the atomizer reverse taper holes Micro-edm Equipments based on electrode sidewall insulation, which is characterized in that including bottom plate
(1), it is provided with the work holder for clamping atomizer (16) on bottom plate (1), and is equipped on bottom plate (1) to workpiece clamp
The workbench positioning device that device is positioned is held, is also connected on bottom plate (1) support frame (15), support frame is equipped on (15)
Quick traverse mechanism for feeder electrode (14) and the micro-feeding device that is connected on quick traverse mechanism, atomizer (16)
The anode and cathode of the adjustable controllable type RC pulse power (9) of open-circuit voltage dynamic are respectively connected to electrode (14)；
The workbench positioning device includes that X on bottom plate (1) is arranged to slide plate (25), X on slide plate (25) equipped with by
For XY to the XY that shaft bearing (44) supports to shaft (4), XY is connected with XY to servo to shaft coupling (3) by XY to shaft (4)
Motor (2).
2. the atomizer reverse taper holes Micro-edm Equipments according to claim 1 based on electrode sidewall insulation,
It is characterized in that, XY is equipped with drive bevel gear (45) to shaft (4), and drive bevel gear (45) is connected by driven wheel of differential (47)
To X to one end of shaft (5), the X to shaft (5) from X to rotating shaft support plate (48) and X to shaft bearing (6) be supported in X to
On slide plate (25), and driven wheel of differential (47) and X be to being equipped with X to electromagnetic clutch (49) between rotating shaft support plate (48), and X is to turning
The other end of axis (5) is equipped with X to driving gear (50), and X is to driving gear (50) with the X that is set on bottom plate (1) to rack gear (43)
It is meshed；
X to slide plate (25) be equipped with Y-direction slide plate (22), Y-direction slide plate (22) lower part be equipped with Y-direction rack gear (23), Y-direction rack gear (23) with
It is meshed set on XY to Y-direction driving gear (24) in the middle part of shaft (4), Y-direction drives gear (24) side that Y-direction electromagnetic clutch is housed
Device (46).
3. the atomizer reverse taper holes Micro-edm Equipments according to claim 2 based on electrode sidewall insulation,
It is characterized in that, the work holder includes two otic placodes (20) being symmetricly set on Y-direction slide plate (22), two otic placodes
(20) it being connected by shaft (51), one end of shaft (51) connects angled servo motor (19) by shaft shaft coupling (52),
It is also connected in shaft (51) angle bucket (18), the workpiece chuck for clamping atomizer (16) is connected on angle bucket (18)
(17), rotating servo motor (21) are connected on workpiece chuck (17).
4. the atomizer reverse taper holes Micro-edm Equipments according to claim 3 based on electrode sidewall insulation,
It is characterized in that, the XY is controlled to servo motor (2), angle servo motor (19) and rotating servo motor (21) by PLC.
5. the atomizer reverse taper holes Micro-edm Equipments according to claim 1 based on electrode sidewall insulation,
It is characterized in that, the quick traverse mechanism includes the lifter plate (11) being connected on support frame (15), and lifter plate (11) passes through
Ball screw nut (42) is connected with Z-direction ball screw (7), and the upper end of Z-direction ball screw (7) is connected by Z-direction shaft coupling (41)
It is connected to Z-direction servo motor (13), the bottom of Z-direction ball screw (7) is connected with bottom plate (1).
6. the atomizer reverse taper holes Micro-edm Equipments according to claim 5 based on electrode sidewall insulation,
It is characterized in that, the micro-feeding device includes the guide cylinder (10) being arranged on lifter plate (11), guide cylinder (10) lower end dress
Have guide head (8), upper end is equipped with fastening end cap (12), is equipped with the first spring (27) in guide head (8) and is set in first
Second spring (28) on the inside of spring (27), the first spring (27) and second spring (28) top are equipped with spring base engaged therewith
(31), the outside of spring base (31) is equipped with lower support sleeve (30), and lower support sleeve (30) is equipped with diaphragm spring (33), spring base
(31) upside is equipped with iron core base (32), and iron core base (32) is equipped with the normally closed electromagnetic clamp (34) for holding electrode (14), often
It closes electromagnetic clamp (34) and is equipped with the diaphragm spring gland (35) cooperated with diaphragm spring (33), set on the inside of diaphragm spring gland (35)
Have movable core winding (37), and diaphragm spring (33) edge is pressed with support sleeve (36), it is on the inside of upper support sleeve (36) and movable
Iron core winding (37) top edge fit inside is equipped with secured core winding between upper support sleeve (36) and fastening end cap (12)
(38), it is provided with and is used in movable core winding (37) inner hole, secured core winding (38) inner hole and fastening end cap (12) inner hole
To the upper guide pipe (39) that electrode (14) is oriented to, the inside of guide head (8) is equipped with the normally opened electromagnetism that power pole (14) pass through
It presss from both sides (26), the lower guide pipe (29) for being oriented to electrode (14) is equipped on the upside of normally opened electromagnetic clamp (26).
7. the atomizer reverse taper holes Micro-edm Equipments according to claim 5 based on electrode sidewall insulation,
It is characterized in that, Z-direction servo motor (13) is controlled by PLC.
8. the atomizer reverse taper holes Micro-edm Equipments according to claim 1 based on electrode sidewall insulation,
It is characterized in that, electrode (14) is lateral wall insulation electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710052100.2A CN106735634B (en) | 2017-01-20 | 2017-01-20 | Atomizer reverse taper holes Micro-edm Equipments based on electrode sidewall insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710052100.2A CN106735634B (en) | 2017-01-20 | 2017-01-20 | Atomizer reverse taper holes Micro-edm Equipments based on electrode sidewall insulation |
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| JP2011115910A (en) * | 2009-12-04 | 2011-06-16 | Denso Corp | Electric discharge machine and method of manufacturing nozzle body using the same |
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| JP2005066760A (en) * | 2003-08-25 | 2005-03-17 | Mitsubishi Electric Corp | Electric discharge machining device |
| CN101318244A (en) * | 2008-05-22 | 2008-12-10 | 清华大学 | Superfine back taper hole spark-erosion machining electrode movement guide mechanism |
| JP2011115910A (en) * | 2009-12-04 | 2011-06-16 | Denso Corp | Electric discharge machine and method of manufacturing nozzle body using the same |
| JP2012125903A (en) * | 2010-12-17 | 2012-07-05 | Denso Corp | Electric discharge machine |
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