CN106914666B - A kind of preparation method and array inclined hole cathode of Electrolyzed Processing array inclined hole cathode - Google Patents

A kind of preparation method and array inclined hole cathode of Electrolyzed Processing array inclined hole cathode Download PDF

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CN106914666B
CN106914666B CN201710323670.0A CN201710323670A CN106914666B CN 106914666 B CN106914666 B CN 106914666B CN 201710323670 A CN201710323670 A CN 201710323670A CN 106914666 B CN106914666 B CN 106914666B
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electrode
array
inclined hole
cut
titanium alloy
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CN106914666A (en
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何亚峰
尹飞鸿
肖华星
俞庆
干为民
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JIANGSU CHENGGONG VALVE TECHNOLOGY Co.,Ltd.
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Changzhou Institute of Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23HWORKING 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
    • B23H3/00Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
    • B23H3/04Electrodes specially adapted therefor or their manufacture

Abstract

The invention discloses a kind of preparation method of Electrolyzed Processing array inclined hole cathode and array inclined hole cathodes, belong to technical field of electrolysis processing.Preparation method of the invention, step are as follows: S1, each face of titanium alloy square stock is cut using low-speed WEDM technique, obtains titanium alloy electrode block;S2, technological datum is chosen on titanium alloy electrode block, carries out horizontal and vertical low-speed WEDM according to cathode requirement, is cut into the array electrode with overall electrode column;S3, on each electrode column of array electrode, wear silk thread after being punched by electric spark-erosion perforation technique and be cut into logical liquid bath;S4, the clamping angle for adjusting array electrode, are cut into array electrode inclined-plane using low-speed WEDM technique;S5, array electrode and main shaft connecting rod are welded to connect;S6, lateral wall insulation processing.It is reliable and stable that array inclined hole cathode precision prepared by the present invention is high, electrode column dimension and spacing consistency are good, insulation performance is reliable, electrolyte leads to liquid bath flow field.

Description

A kind of preparation method and array inclined hole cathode of Electrolyzed Processing array inclined hole cathode
Technical field
The present invention relates to the preparation methods and cathode construction of a kind of electrochemical machine tool cathode, more specifically to one The preparation method and array inclined hole cathode of Electrolyzed Processing array inclined hole cathode of the kind based on compound inslation technique.
Background technique
With the development of scientific research and industrial technology, new high-tech product is gradually integrated to function, superfinishing densification and The directions such as compact outline are developed, such as the part shape of aerospace field becomes increasingly complex, and dimension precision requirement is increasingly Height, incident is being continuously increased for a large amount of different microscale structures and high-precision part.High-accuracy processing An important development direction of interest as current world's manufacturing industry.
Currently, in fields such as aerospace, precision instruments, there are the process requirements of many hole arrays, wherein being no lack of Array inclined hole.For array hole processing there are a variety of methods, wherein the processing of electrolysis hole array due to machined surface quality compared with Well, the advantages that production efficiency is higher has obtained preferable development and application.Electrolysis hole array processing is based on electrochemical metal On solution principle basis, the reduction process of material is carried out in the form of ion, and theoretically surface accuracy and processing dimension can To reach micron order.In Electrolyzed Processing, process gap very little, in reaction process workpiece anode metal constantly lose electronics at It is dissolved into electrolyte for ion, this Electrolyzed Processing mode makes it have very big development latent in fine precision manufacturing field Power.
However, the difficulty of processing of array inclined hole is larger, and wherein Major Difficulties are array inclined hole work in electrolysis hole machined Has the preparation of cathode, on the one hand, the structure of array inclined hole tool cathode processes complexity, and conventional machining process is difficult to ensure tool yin The precise measure of pole.
On the other hand, the lateral wall insulation of array inclined hole tool cathode is complex, it is known that the side of electrolytic tool cathode Wall insulation is the most direct mode that Electrolyzed Processing hole reduces machined surface anticaustic, reduces taper, and since electrolysis adds The processing environment of work complexity, the requirement to lateral wall insulation are more stringent, it is desirable that lateral wall insulation has enough mechanical strengths to hold It is uniform etc. by the high speed impact of electrolyte, and with good dielectricity, acid resistance, insulating layer compactness and thickness, commonly Lateral wall insulation method has plastic-spraying, spray epoxy, differential arc oxidation, photocuring etc., but due to the table of insulating layer and tool cathode Interfacial stress variation in face is complicated, corrosion and high speed impact of the insulating layer by electrolyte, decreasing insulating.Currently with the differential of the arc Oxidation technology is in tool cathode Surface Creation membrane of oxide ceramics, thus reach high compactness, uniformity and insulating properties, but by There is hole in the ceramic membrane that differential arc oxidation generates, so that insulation performance is also not ideal enough.
In addition, for Electrolyzed Processing precision, there is also very big shadows for the setting of the logical liquid bath of the electrolyte of array inclined hole tool cathode It rings, whether logical liquid bath design is reasonable, whether uniform and stable electrolyte flow field is directly related to, so that it is oblique to influence Electrolyzed Processing array The precision in hole.
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome existing Electrolyzed Processing array inclined hole, there are cathode construction preparation difficulties, cathode side walls Insulation effect is poor and cathode leads to the deficiencies of liquid bath Flow Field Distribution uniformity is poor, provides a kind of Electrolyzed Processing array inclined hole cathode Preparation method and array inclined hole cathode, using technical solution of the present invention, array inclined hole cathode prepares precision height, electrode column dimension With spacing consistency is good, insulation performance is reliable, electrolyte lead to liquid bath flow field it is reliable and stable.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of preparation method of Electrolyzed Processing array inclined hole cathode of the invention, comprising the following steps:
S1, it prepares titanium alloy electrode block: each face of titanium alloy square stock being cut using low-speed WEDM technique, is obtained To titanium alloy electrode block;
S2, processing array electrode column: choosing technological datum on titanium alloy electrode block, carries out according to cathode requirement horizontal To with longitudinal low-speed WEDM, be cut into the array electrode with overall electrode column;
S3, it processes logical liquid bath: on each electrode column of array electrode, wearing silk thread after punching by electric spark-erosion perforation technique It is cut into logical liquid bath;
S4, cutting electrode inclined-plane: adjusting the clamping angle of array electrode, is cut into array using low-speed WEDM technique Electrode inclined-plane;
S5, welding main shaft connecting rod: array electrode and main shaft connecting rod are welded to connect;
S6, lateral wall insulation processing: insulation processing is integrally carried out to array electrode using differential arc oxidization technique, then using electricity Swimming technique is packaged differential arc oxidation insulating surfaces, forms double insulation composites, and to electrode inclined-plane and electrode supply connecting part Double insulation composites carry out polishing removal;Alternatively, first being covered to electrode inclined-plane and electrode supply connecting part, then use Differential arc oxidization technique carries out insulation processing to electrode, and is packaged using electrophoresis process to differential arc oxidation insulating surfaces, is formed double Insulation composite.
Further, in step sl, the top and bottom of the titanium alloy electrode block obtained using low-speed WEDM are parallel Degree is no more than 0.01mm, is no more than 0.01mm with side verticality above.
Further, in step s 2, the cutting current of the horizontal and vertical low-speed WEDM of overall electrode column is not Greater than 5A, the form accuracy of each electrode column of cutting is not more than 0.02mm;In step s 4, low-speed WEDM technique is utilized The cutting current for cutting array electrode inclined-plane is not more than 1A, and electrode inclined-plane is at least cut three times.
Further, in step s 5, main shaft connecting rod and the verticality of array electrode joint face are not more than 0.01mm, Main shaft connecting rod is made using CNC Lathe Turning, and the revolution radial beat eccentricity of main shaft connecting rod is no more than 0.005mm.
Further, in step s 6, differential arc oxidation voltage is no more than 500V, and the differential arc oxidation time is no more than 60s, micro- Arc is packaged differential arc oxidation insulating surfaces using electrophoresis process after ultrasonic cleaning after aoxidizing, and electrophoresis encapsulates voltage No more than 300V, packaging time is no more than 30s, and the thickness of double insulation composites is no more than 30 μm.
A kind of Electrolyzed Processing array inclined hole cathode of the invention, including main shaft connecting rod and array electrode, the main shaft Connecting rod and array electrode are welded to connect, and the electrode column of array distribution, the electrode are integrally formed on the array electrode Column is equipped with logical liquid bath, and inclined-plane is cut on the end face of the electrode column, and the side wall of the electrode column is equipped with double insulation Composite layer, double insulation composites include the electrophoresis encapsulated layer set on the differential arc oxidation layer of inside and set on outside;The electrolysis adds Work array inclined hole cathode is prepared using the preparation method of above-mentioned Electrolyzed Processing array inclined hole cathode.
Further, the cross sectional shape of the electrode column is rectangle, and the logical liquid bath on the electrode column is round or item Shape through slot.
Further, the cross sectional shape of the electrode column is diamond shape, and the logical liquid bath on the electrode column is round or water chestnut Shape or strip arc-shaped slot.
3. beneficial effect
Using technical solution provided by the invention, compared with existing well-known technique, there is following remarkable result:
The preparation method and array inclined hole cathode of a kind of Electrolyzed Processing array inclined hole cathode of the invention, using titanium alloy side Material integral cutting prepares cathode, meets the use intensity requirement of cathode, and the array inclined hole cathode precision of preparation is high, technique letter Single, the size and spacing consistency between electrode column are good;It is integrally insulated using differential arc oxidization technique to array electrode, and benefit Differential arc oxidation insulating surfaces are packaged with electrophoresis process, experiment shows insulating layer resistance value not less than 106Ohm, insulation performance Reliably, the binding force and between insulating layer and titanium alloy is strong, and corrosion resistance is strong, and anti-electrolyte washes away when improving Electrolyzed Processing Ability;Using the structure that logical liquid bath is arranged on each electrode column, and the arrangements of logical liquid bath are more reasonable, to make to be electrolysed The logical liquid bath flow field of liquid is reliable and stable, improves Electrolyzed Processing quality and efficiency.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of the preparation method of Electrolyzed Processing array inclined hole cathode of the invention;
Fig. 2 is a kind of structural schematic diagram of Electrolyzed Processing array inclined hole cathode of the invention;
Fig. 3 is a kind of schematic cross-sectional view of Electrolyzed Processing array inclined hole cathode of the invention;
Fig. 4 is a kind of rectangular section electrode column schematic diagram of Electrolyzed Processing array inclined hole cathode of the invention;
Fig. 5 is a kind of diamond-shaped cross-section electrode column schematic diagram of Electrolyzed Processing array inclined hole cathode of the invention;
Fig. 6 is the logical liquid bath schematic shapes in the present invention on the electrode column of rectangular section;
Fig. 7 is the logical liquid bath schematic shapes in the present invention on diamond-shaped cross-section electrode column.
Label declaration in schematic diagram:
1, main shaft connecting rod;2, array electrode;3, electrode column;4, inclined-plane;5, differential arc oxidation layer;6, electrophoresis encapsulated layer;7, Logical liquid bath.
Specific embodiment
To further appreciate that the contents of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
As shown in connection with fig. 1, the preparation method of a kind of Electrolyzed Processing array inclined hole cathode of the present embodiment, including following step It is rapid:
S1, it prepares titanium alloy electrode block: each face of titanium alloy square stock being cut using low-speed WEDM technique, is obtained To titanium alloy electrode block;Before this step, in order to guarantee that titanium alloy electrode block cutting accuracy is higher, titanium alloy square stock is placed in Water base property solvent cleaning at least 30min is added in ultrasonic equipment container, is carrying out low-speed WEDM after taking out drying, is reducing Influences of the titanium alloy square stock surface contaminants to wire cutting precision, so that the titanium alloy electrode block obtained using low-speed WEDM The top and bottom depth of parallelism be no more than 0.01mm, be no more than 0.01mm with side verticality above, machining accuracy is high.
S2, processing array electrode column: choosing technological datum on titanium alloy electrode block, carries out according to cathode requirement horizontal To with longitudinal low-speed WEDM, be cut into the array electrode with overall electrode column;In this step, horizontal and vertical cutting With certain depth, to meet inclined hole processing needs, specifically when cutting, the horizontal and vertical low-speed WEDM of overall electrode column Cutting current be not more than 5A, the form accuracy of each electrode column of cutting is not more than 0.02mm, according to horizontal and vertical cutting Angle change can be cut into the electrode column of different cross section shape, and common electrode column cross sectional shape is square or diamond shape.It adopts Electrode column is directly cut on titanium alloy electrode block with low-speed WEDM, electrode column is structure as a whole, and structure precision is high, electricity Size and spacing consistency between pole is good.
S3, it processes logical liquid bath: on each electrode column of array electrode, wearing silk thread after punching by electric spark-erosion perforation technique It is cut into logical liquid bath;Lead to liquid bath by processing electrolyte respectively on each electrode column, to ensure that electrolyte flow field is steady It is fixed uniform, improve machining accuracy.
S4, cutting electrode inclined-plane: adjusting the clamping angle of array electrode, is cut into array using low-speed WEDM technique Electrode inclined-plane;In order to improve inclined-plane cutting accuracy, the cutting current on low-speed WEDM technique cutting array electrode inclined-plane is utilized No more than 1A, and electrode inclined-plane is at least cut three times.
S5, welding main shaft connecting rod: array electrode and main shaft connecting rod are welded to connect;Specific requirement are as follows: main shaft connection The verticality of bar and array electrode joint face is not more than 0.01mm, and main shaft connecting rod is made using CNC Lathe Turning, and main shaft The revolution radial beat eccentricity of connecting rod is no more than 0.005mm, ensure that the machining accuracy of entire array inclined hole cathode.
S6, lateral wall insulation processing: insulation processing is integrally carried out to array electrode using differential arc oxidization technique, then using electricity Swimming technique is packaged differential arc oxidation insulating surfaces, forms double insulation composites, and to electrode inclined-plane and electrode supply connecting part Double insulation composites carry out polishing removal;Specifically, differential arc oxidation voltage is no more than 500V, and the differential arc oxidation time is no more than 60s is packaged differential arc oxidation insulating surfaces using electrophoresis process after ultrasonic cleaning after differential arc oxidation, electrophoresis envelope It fills voltage and is no more than 300V, packaging time is no more than 30s, and the thickness of double insulation composites is no more than 30 μm, double insulated compounds The insulating layer resistance value of layer is not less than 106Ohm, insulation performance is reliable, and the binding force between insulating layer and titanium alloy is strong, corrosion resistant Corrosion is strong, the ability that anti-electrolyte washes away when improving Electrolyzed Processing.After the completion of the preparation of double insulation composites, set in ultrasonic wave Water base property solvent is added in standby container, titanium alloy array electrode is placed in one and cleans at least 60min, it is stand-by i.e. to take out drying It can.
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a kind of Electrolyzed Processing array inclined hole cathode of the present embodiment, including main shaft connect Extension bar 1 and array electrode 2, main shaft connecting rod 1 and array electrode 2 are welded to connect, and are integrally formed with array distribution on array electrode 2 Electrode column 3, electrode column 3 are equipped with logical liquid bath 7, and inclined-plane 4 is cut on the end face of electrode column 3, and the side wall of electrode column 3 is equipped with double Insulation composite, double insulation composites include the electrophoresis encapsulated layer 6 set on the differential arc oxidation layer 5 of inside and set on outside;It should Electrolyzed Processing array inclined hole cathode is prepared using the preparation method of above-mentioned Electrolyzed Processing array inclined hole cathode.According to transverse direction With longitudinally cutting angle change, it can be cut into the electrode column of different cross section shape, as shown in figure 4, the cross sectional shape of electrode column 3 For rectangle, also, in the present embodiment, when the cross sectional shape of electrode column 3 is rectangle, the logical liquid bath 7 on the electrode column 3 is circle Shape or bar shaped groove, if Fig. 6 (a) is the round through slot positioned at 3 center of electrode column, Fig. 6 (b) is positioned at 3 one axis of electrode column On bar shaped groove, Fig. 6 (c) is bar shaped groove on 3 one diagonal lines of electrode column.It is as also shown in fig. 5, electrode column 3 Cross sectional shape is diamond shape, also, in the present embodiment, logical on the electrode column 3 when the cross sectional shape of electrode column 3 is diamond shape Liquid bath 7 is round or diamond shape or strip arc-shaped slot, and if Fig. 7 (a) is the round through slot positioned at 3 center of electrode column, Fig. 7 (b) is The strip arc-shaped slot diagonally adjacent positioned at electrode column 3, Fig. 7 (c) are the diamond shape through slot positioned at 3 center of electrode column, the water chestnut Shape through slot is identical as the cross sectional shape of electrode column 3, and each side of diamond shape through slot is parallel with the cross sectional shape of electrode column 3.
Embodiment 2
The preparation method and array inclined hole cathode of a kind of Electrolyzed Processing array inclined hole cathode of the present embodiment, preparation method And the basic structure of array inclined hole cathode is with embodiment 1, the difference is that, in the preparation side of Electrolyzed Processing array inclined hole cathode In method step S6, first electrode inclined-plane and electrode supply connecting part are covered, then using differential arc oxidization technique to electrode into Row insulation processing, and differential arc oxidation insulating surfaces are packaged using electrophoresis process, form double insulation composites;It is i.e. oblique to electrode Face and electrode supply connecting part carry out on-insulated protection, directly carry out insulation processing to other positions, later by electrode inclined-plane and The on-insulated protective layer of electrode supply connecting part removes.
The preparation method and array inclined hole cathode of a kind of Electrolyzed Processing array inclined hole cathode of the invention, using titanium alloy side Material integral cutting prepares cathode, meets the use intensity requirement of cathode, and the array inclined hole cathode precision of preparation is high, technique letter Single, the size and spacing consistency between electrode column are good;It is integrally insulated using differential arc oxidization technique to array electrode, and benefit Differential arc oxidation insulating surfaces are packaged with electrophoresis process, experiment shows insulating layer resistance value not less than 106Ohm, insulation performance Reliably, the binding force and between insulating layer and titanium alloy is strong, and corrosion resistance is strong, and anti-electrolyte washes away when improving Electrolyzed Processing Ability;Using the structure that logical liquid bath is arranged on each electrode column, and the arrangements of logical liquid bath are more reasonable, to make to be electrolysed The logical liquid bath flow field of liquid is reliable and stable, improves Electrolyzed Processing quality and efficiency.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field Art personnel are enlightened by it, without departing from the spirit of the invention, without creatively designing and the technical solution Similar frame mode and embodiment, are within the scope of protection of the invention.

Claims (5)

1. a kind of preparation method of Electrolyzed Processing array inclined hole cathode, which comprises the following steps:
S1, it prepares titanium alloy electrode block: each face of titanium alloy square stock being cut using low-speed WEDM technique, obtains titanium Alloy electrode block;
S2, processing array electrode column: choose technological datum on titanium alloy electrode block, according to cathode requirement carry out laterally and Longitudinal low-speed WEDM is cut into the array electrode with overall electrode column;
S3, it processes logical liquid bath: on each electrode column of array electrode, silk thread cutting is worn after punching by electric spark-erosion perforation technique Lead to liquid bath out;
S4, cutting electrode inclined-plane: adjusting the clamping angle of array electrode, is cut into array electrode using low-speed WEDM technique Inclined-plane;
S5, welding main shaft connecting rod: array electrode and main shaft connecting rod are welded to connect;
S6, lateral wall insulation processing: insulation processing is integrally carried out to array electrode using differential arc oxidization technique, then uses electrophoresis work Skill is packaged differential arc oxidation insulating surfaces, forms double insulation composites, and to pair on electrode inclined-plane and electrode supply connecting part Insulation composite carries out polishing removal;Alternatively, first covering to electrode inclined-plane and electrode supply connecting part, the differential of the arc is then used Oxidation technology carries out insulation processing to electrode, and is packaged using electrophoresis process to differential arc oxidation insulating surfaces, forms double insulation Composite layer.
2. a kind of preparation method of Electrolyzed Processing array inclined hole cathode according to claim 1, it is characterised in that: in step In S1, the top and bottom depth of parallelism of the titanium alloy electrode block obtained using low-speed WEDM is no more than 0.01mm, above with side Verticality is no more than 0.01mm.
3. a kind of preparation method of Electrolyzed Processing array inclined hole cathode according to claim 1, it is characterised in that: in step In S2, the cutting current of the horizontal and vertical low-speed WEDM of overall electrode column is not more than 5A, each electrode column of cutting Form accuracy is not more than 0.02mm;In step s 4, the cutting electricity on low-speed WEDM technique cutting array electrode inclined-plane is utilized Stream is not more than 1A, and electrode inclined-plane is at least cut three times.
4. a kind of preparation method of Electrolyzed Processing array inclined hole cathode according to claim 1, it is characterised in that: in step In S5, the verticality of main shaft connecting rod and array electrode joint face is not more than 0.01mm, and main shaft connecting rod uses numerical control lathe wheeled litter Cut it is obtained, and the revolution radial beat eccentricity of main shaft connecting rod be no more than 0.005mm.
5. a kind of preparation method of Electrolyzed Processing array inclined hole cathode according to claim 1, it is characterised in that: in step In S6, differential arc oxidation voltage is no more than 500V, and the differential arc oxidation time is no more than 60s, and it is clear to pass through ultrasonic wave after differential arc oxidation Differential arc oxidation insulating surfaces are packaged using electrophoresis process after washing, electrophoresis encapsulates voltage and is no more than 300V, and packaging time does not surpass 30s is crossed, the thickness of double insulation composites is no more than 30 μm.
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CN109570662A (en) * 2019-01-28 2019-04-05 安徽理工大学 It is a kind of based on electromagnetic induction heating suitable for the electrochemical micromachining micro tool electrode lateral wall insulation method of various shapes and application
CN110489777A (en) * 2019-07-02 2019-11-22 哈尔滨理工大学 A kind of array hole electric spark ultrasonic Compound Machining flow field simulation method
CN110405414A (en) * 2019-07-04 2019-11-05 厦门捷昕精密科技股份有限公司 Solve tubular configured joint die joint flash mold processing technology
CN110230082B (en) * 2019-07-18 2021-06-25 烟台大学 Device and method for preparing cluster cathode micro-arc oxidation film
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