TW201521922A - Electrode structure for electrochemical processing and electrochemical processing device - Google Patents

Abstract

This invention is to provide an electrode structure for electrochemical processing and an electrochemical processing device. The electrode structure comprises of an electrode body and a turbulent flow structure which is disposed on the surface of the electrode body. The electrolyte enters the space between the electrode structure and a workpiece while electrochemical processing is performed to the workpiece by the electrode structure, and the turbulent flow structure makes the electrolyte disturbed to change the flow field of the electrolyte, so as to effectively increase the processing efficiency of electrochemical process.

Description

Electrochemical processing electrode structure and electrochemical processing device

The invention relates to an electrode structure and a processing device, in particular to an electrode structure and an electrochemical processing device for electrochemical processing and disturbing an electrolyte.

Electrochemical machining is an important process for non-traditional processing. It forms a predetermined processing structure on a workpiece by the principle of anodic dissolution, and the processing speed of electrochemical machining is not affected by the hardness, strength and toughness of the material of the workpiece. The material is removed, so electrochemical machining can be used to machine workpieces that are difficult to machine, or to form complex or difficult-to-machine shapes on the workpiece.

In electrochemical machining, electrode design is one of the important tasks. Because electrode design is related to the processing electric field distribution of electrochemical machining and the flow field distribution of electrolyte, the distribution of processing electric field and electrolyte flow field will affect electrochemical processing. Shape accuracy, although it is possible to solve the problem of partial processing electric field and electrolyte flow field distribution by adjusting processing parameters, but the effect is not good. Therefore, if the workpiece can be further designed for the predetermined processing workpiece and the shape and effect of the workpiece formed before the electrochemical machining, in order to change the processing electric field of the electrochemical processing and the distribution of the electrolyte flow field, the electrochemical The processing effect and efficiency of processing have been improved.

Generally, an electrode for electrochemical processing removes a material of a workpiece by ion exchange during electrochemical processing, so that many electrolytic products are generated during electrochemical processing, and when the electrolyte flows in a flow path in a laminar flow, This will reduce the chance of reaction between the fresh electrolyte and the surface of the workpiece, resulting in an inability to improve the machining accuracy or processing efficiency of electrochemical machining.

In view of the above problems, the present invention provides an electrode structure and an electrochemical processing device for electrochemical processing, wherein the electrode structure can cause disturbance of the electrolyte during electrochemical processing to change the flow direction of the electrolyte.

The object of the present invention is to provide an electrode structure and an electrochemical processing device for electrochemical processing, wherein the electrode structure has a spoiler structure, and the electrode structure is in the process of electrochemical processing, and the spoiler structure can disturb the electrolyte and change The flow field direction of the electrolyte.

In order to achieve the above-mentioned various purposes and effects, the present invention discloses an electrochemically processed electrode structure for electrochemically processing a workpiece, the electrode structure comprising: an electrode body having a processing region; A spoiler structure is disposed on a surface of the electrode body.

The invention further discloses an electrochemical processing device, comprising: a first-class track module connected to a workpiece and located above the workpiece; and an electrode structure disposed on the flow channel module, the electrode structure being processed The region corresponds to the workpiece and electrochemically processes the workpiece; wherein the electrode structure comprises: an electrode body having the processing region; and a spoiler structure disposed on the surface of the electrode body.

1‧‧‧Electrode structure
10‧‧‧electrode body
101‧‧‧ first end
102‧‧‧Axial surface
103‧‧‧ second end
1031‧‧‧ end face
104‧‧‧Processing area
105‧‧‧ flow path
106‧‧‧ pattern processing area
12‧‧‧ spoiler structure
121‧‧‧Insulator
1210‧‧‧Axial surface
1211‧‧‧ first end
1213‧‧‧ second end
1215‧‧‧ pattern groove
122‧‧‧ lines
2‧‧‧Workpiece
21‧‧‧Predetermined processing area
211‧‧‧ hole
3‧‧‧Flow channel module
31‧‧‧Channel body
311‧‧‧First perforation
32‧‧‧Electrolyte input flow channel
4‧‧‧Power supply unit
41‧‧‧Anode
42‧‧‧ cathode
5‧‧‧ electrolyte
d, d1, d2, d3, d4‧‧ ‧ pitch

First drawing: a schematic view of an electrode structure according to a first embodiment of the present invention;
Figure 2 is a cross-sectional view showing an electrode structure of a first embodiment of the present invention;
Third drawing: a schematic view of an electrode structure of a second embodiment of the present invention;
4A to 4B: a state of use of the electrode structure of the second embodiment of the present invention;
Figure 5 is a schematic view showing an electrode structure of a third embodiment of the present invention;
Fig. 6 is a view showing a state of use of an electrode structure of a third embodiment of the present invention; and a seventh view showing a cross-sectional view of an electrode structure of a fourth embodiment of the present invention.

In order to further understand and understand the features of the present invention and the effects achieved, the following examples and the detailed descriptions are provided to illustrate the following:

Referring to the first and second figures, which are schematic and cross-sectional views of an electrode structure according to a first embodiment of the present invention; as shown, the electrode structure 1 for electrochemical processing of the present embodiment includes an electrode body. 10 and a spoiler structure 12. The electrode body 10 is a cylinder and is a conductor. The electrode body 10 has a first end 101, an axial surface 102 and a second end 103. The end face of the first end 101 of the electrode body 10 is a processing zone 104. The electrode body 10 further has a flow path 105 that extends from the end surface 1031 of the second end 103 of the electrode body 10 to the processing region 104 of the first end 101 of the electrode body 10.

The spoiler structure 12 is an insulating material disposed on the axial surface 102 of the electrode body 10, that is, not disposed on the processing region 104. The spoiler structure 12 includes an insulator 121 and a spiral pattern 122. The insulator 121 is an insulating layer formed on the axial surface 102 of the electrode body 10. The spiral pattern 122 is formed on one of the axial surfaces 1210 of the insulator 121. The second end 1213 of the insulator 121 extends around its first end 1211, that is, the spiral path 122 extends from the second end 103 of the electrode body 10 to its first end 101. Of course, the insulator 121 can also be a housing having a spiral pattern 102 and sleeved on the electrode body 10 such that it is located on the axial surface 102 of the electrode body 10. However, the spiral groove 122 of the embodiment is a continuous groove, and the plurality of pitches d of the spiral groove 122 are the same, that is, the spiral pattern 122 of the equal pitch type. However, the spiral pattern 122 can also be a continuous ridge. As shown in the third figure, even the spiral pattern 122 is a discontinuous plurality of grooves or ridges. Of course, the pattern 122 can be non-helical, and can be other types.

Referring to the third drawing, which is a schematic view of an electrode structure according to a second embodiment of the present invention; as shown in the figure, the electrode structure 1 of the present embodiment is different from the electrode structure 1 of the above embodiment in the spiral pattern of the embodiment. 122 is a continuous ridge, and the plurality of pitches d1, d2, d3, and d4 between the spiral lines 122 are different. The pitches d1, d2, d3, and d4 are from the second end 1213 of the insulator 121 to the insulator 121. The first end 1211 is decremented, that is, from the second end 103 of the electrode body 10 toward the first end 101 of the electrode body 10, that is, the pitch d1 > the pitch d2 > the pitch d3 > the pitch d4. Please refer to FIG. 4A to FIG. 4B, which are diagrams showing the state of use of the electrode structure according to the second embodiment of the present invention; as shown, the electrode structure 1 of the present embodiment is used for an electrochemical processing device, and is electrochemicalized. The processing device further includes a first-class track module 3. When the electrode structure 1 electrochemically processes the workpiece 2, the flow channel module 3 is first connected to the workpiece 2, and the flow channel module 3 is located above the workpiece 2. The flow channel module 3 has a first-class channel body 31. The center of the channel body 31 has a first through hole 311, and the first hole 311 extends through the channel body 31. Each of the two sides of the flow path body 31 has an electrolyte input flow path 32. The electrolyte input flow path 32 extends into the flow path body 31 and communicates with the first through hole 311. When the flow path module 3 is connected to the workpiece 2, the flow path body 31 is disposed on the surface of the workpiece 2, and the first through hole 311 corresponds to a predetermined processing area 21 of the workpiece 2.

After the arrangement of the flow channel module 3 is completed, the electrode structure 1 is disposed on the first through hole 311 of the flow path module 3, and the processing area 104 of the electrode structure 1 corresponds to the predetermined processing area 21 of the workpiece 2. Further, an anode 41 of one power supply unit 4 is connected to the workpiece 2, and a cathode 42 of the power supply unit 4 is connected to the electrode body 10 of the electrode structure 1. Then, the power supply unit 4 is activated, and power is supplied to the electrode body 10 and the workpiece 2. In addition, an electrolyte 5 flows from the electrolyte input channels 32 of the flow channel module 3 to the first perforations 311, and the electrolyte 5 contacts the spiral path 122 of the spoiler structure 12 of the electrode structure 1, and the electrolyte 5 follows The spiral path 122 flows between the processing zone 104 and the predetermined processing zone 21. The electrolyte 5 flows along the spiral groove 122, and changes the flow direction of the electrolyte 5, that is, changes the flow field of the electrolyte 5, so that the electrolyte 5 is in a turbulent state. When the electrolyte 5 flows between the processing zone 104 and the predetermined processing zone 21, and the power supply unit 4 supplies power, the processing zone 104 of the electrode structure 1 electrochemically processes the predetermined processing zone 21 of the workpiece 2. However, since the electrode body 10 is a cylinder, the processing region 104 is circular to form a circular hole 211 in the predetermined processing region 21.

As the fresh electrolyte 5 is continuously input into the first perforations 311 from the electrolyte input channels 32 of the flow channel module 3, the electrolyte 5 originally located between the first perforations 311 and the electrode structure 1 and the workpiece 2 will Due to the compression of the predetermined processing region 21 of the workpiece 2 and the bottom end of the electrode structure 1, the flow path 105 that is driven to the electrode structure 1 flows, and then flows from the flow channel 105 to the external electrolyte recovery tank (not shown). Let the electrolyte circulate. However, during the electrochemical processing of the electrode structure 1 and the workpiece 2, a large number of electrolytic products are generated, and the electrolytic product will be discharged from the flow channel 105 with the electrolyte 5, so that the processing region 104 and the predetermined workpiece region can be continuously updated. 21 electrolytes 5 to effectively improve the processing efficiency of electrochemical machining.

Referring to the third figure, the pitches d1, d2, d3, and d4 of the spiral pattern 122 of the spoiler structure 12 of the electrode structure 1 of the present embodiment are different, and the closer to the first end 101 of the electrode body 10, the section The smaller the distance d2, d3, and d4, the flow rate of the electrolyte 5 will follow the pitches d1, d2, d3, and d4 of the spiral path 122 when the electrolyte 5 flows toward the first end 101 of the electrode body 10. The decrease is increased, even if the original flow velocity of the electrolyte 5 is gradually accelerated. When the electrolyte 5 initially contacts the spiral groove 122 (spoiler structure) having a large pitch, the resistance of the spiral groove 122 to the electrolyte 5 is lowered to avoid reducing the flow velocity of the electrolyte 5, thereby preventing the electrolyte 5 from laminar flow. status. The pitches d1, d2, d3, and d4 of the spiral groove 122 of the spoiler structure 12 of the present embodiment are also decreased toward the processing region 104 with the flow path of the electrolyte 5. It can be seen from the above that the spoiler structure 12 of the electrode structure 1 of the present embodiment can cause the electrolyte 5 to be disturbed without being rotated, and change the flow field of the electrolyte 5 even if the electrolyte is subjected to forward and lateral flow. In order to make the electrolyte 5 turbulent, the flow rate of the electrolyte 5 can be accelerated, and the ion reaction rate and processing rate of the electrochemical process can be effectively improved.

Referring to FIG. 5, it is a schematic diagram of an electrode structure according to a third embodiment of the present invention; as shown in the figure, the electrode structure 1 of the present embodiment is different from the electrode structure 1 of the above embodiment in the shape of the electrode body 10, The electrode body 10 of the electrode structure 1 of the embodiment is a cylinder, and the electrode body 10 of the electrode structure 1 can also be a polygonal corner column, just as the electrode body 10 of the embodiment is a hexagonal corner column. Please refer to the sixth drawing, which is a use state diagram of the electrode structure of the third embodiment of the present invention; as shown in the figure, when the electrode structure 1 of the embodiment performs electrochemical processing on the workpiece 2, the electrode structure 1 The workpiece 2 is fed, and the electrode structure 1 is not required to be rotated during the electrochemical processing of the workpiece 2. However, since the electrode body 10 is a hexagonal corner column, the processing region 104 is hexagonal, so that the workpiece 2 can be used. A hexagonal hole 211 is formed in the upper portion. From this, it can be seen that the electrode structure 1 of the present invention can process polygonal holes in addition to circular holes.

Referring to FIG. 7, which is a cross-sectional view of an electrode structure according to a fourth embodiment of the present invention; as shown in the figure, the electrode structure 1 of the present embodiment is different from the electrode structure 1 of the above embodiment in that the interference of the embodiment The insulator 121 of the flow structure 12 further has at least one pattern groove 1215. The electrode body 10 corresponding to at least one of the pattern grooves 1215 is exposed to the pattern groove 1215 to be at least one pattern processing region 106. When the electrode structure 1 of the embodiment performs electrochemical processing on the workpiece, the processing region 104 of the electrode structure 1 forms a hole in the workpiece, and at least one pattern processing region 106 can form a corresponding pattern processing region 106 on the inner surface of the hole. At least one pattern of the shape.

In summary, the present invention provides an electrode structure and an electrochemical processing device for electrochemical processing. The electrode structure has a spoiler structure. When the electrode structure electrochemically processes the workpiece, the spoiler structure can disturb the electrolyte, and Changing the flow direction of the electrolyte, the spoiler structure can accelerate the flow velocity of the electrolyte, improve the turbulent state of the electrolyte, and continuously react the fresh electrolyte with the surface of the workpiece, thereby improving the processing of electrochemical machining. rate.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the present invention, and the variations, modifications, and modifications of the shapes, structures, features, and spirits described in the claims of the present invention are It should be included in the scope of the patent application of the present invention.

1‧‧‧Electrode structure

10‧‧‧electrode body

101‧‧‧ first end

105‧‧‧ flow path

12‧‧‧ spoiler structure

121‧‧‧Insulator

122‧‧‧ lines

D‧‧‧ pitch

Claims (10)

An electrochemically processed electrode structure for electrochemical processing a workpiece, the electrode structure comprising:
An electrode body having a processing region; and a spoiler structure disposed on a surface of the electrode body. The electrode structure for electrochemical processing according to claim 1, wherein the spoiler structure comprises:
An insulator disposed on an axial surface of the electrode body; and at least one grain disposed on an axial surface of the insulator. The electrode structure for electrochemical processing according to claim 2, wherein the at least one grain is at least one ridge or at least one groove. The electrode structure of the electrochemical process of claim 2, wherein the insulator has at least one groove, and the electrode body corresponding to at least one groove is exposed to the at least one groove. And for the processing area. The electrochemically processed electrode structure of claim 2, wherein the at least one grain is a spiral pattern and extends from a second end of the insulator to a first end of the insulator. The electrochemically fabricated electrode structure of claim 5, wherein the spiral track has a plurality of pitches that decrease from the second end of the insulator toward the first end of the insulator. The electrode structure for electrochemical processing according to claim 5, wherein the spiral track has a plurality of pitches which decrease toward the processing zone along with a flow path of one of the electrochemically processed electrolytes. The electrode structure for electrochemical processing according to claim 1, wherein the processing region is located at one end of the electrode body. The electrode structure for electrochemical processing according to claim 1, wherein the electrode body has a first-class track, and the flow path penetrates the electrode body. An electrochemical processing apparatus comprising:
a first-class track module connected to a workpiece and located above the workpiece; and an electrode structure disposed on the flow channel module, wherein a processing area of the electrode structure corresponds to the workpiece, and the workpiece is electrochemically processed ;
Wherein the electrode structure comprises:
An electrode body having the processing region; and a spoiler structure disposed on a surface of the electrode body.