JPS58206317A - Electrode tool for electrolytic complex mirror machining - Google Patents

Abstract

PURPOSE:To reduce machining processes by arranging a rough machining abrasive in the center on the electrode side of a disk-like rotary tool combining an electrolytic action and a mechanical grain abrasive action and arranging a finish machining abrasive at the periphery. CONSTITUTION:A rough machining abrasive 11 is abrasive grains with a large grain size stuck to an elastic unwoven fabric with water permeability in the lower center of a disk-like tool electrode 9 and a finish machining abrasive 12 with a small grain size is stuck to the periphery. The mirrow machining of the raw surface of a work metal is reduced to one process by means of the abrasive 11 in the center, the abrasive 12 at the periphery, and the anode melting action of the work metal by electrolysis.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention combines the anodic bathing action of 10,000 ounces of liquid-processed gold by a turtle and the mechanical overflowing action of 10,000 ounces of gold.
The purpose of this invention is to reduce the number of processing steps and efficiently process the workpiece metal into a mirror surface with respect to an electrode tool for processing the workpiece metal into a mirror surface.

As shown in Fig. 1 and Fig. 2, in the conventional electrode tool for electrolytic composite mirror finishing, the tool electrode holder +l+ rotated by a drive device is connected to the cathode of a DC power supply, and the holder (1
A circular root-shaped rotary tool electrode (2) is integrally connected to the lower part of the electrode (2), and the electrode (2) has a plurality of electrolyte supply holes (
3) are radially transparent, and an abrasive material (4) having abrasive grains attached to a water-permeable elastic nonwoven fabric is attached to the lower surface of the pole (2). Then, the abrasive material (4) is applied to the workpiece metal (5) that is in contact with the anode of the DC
The 'I I'# liquid (7) from the supply path (6) of No. 11 passes through the supply hole (31 and the grinding hole (4) to the metal to be processed (5).
t together with the holder (1) while letting it flow onto the machined surface.
By rotating 14 +21, the workpiece metal (5
) can be efficiently mirror-finished in a short time.

In this case, the abrasive action is a combination of the grain abrasion action, the abrasive action mainly plays the role of creating surface roughness, and the electrolytic action mainly determines the amount removed. In both cases, the abrasive action is an electrolytic action, and the electrolytic action is an auxiliary action to the abrasive action, that is, they have a combined effect. Regarding the creation of roughness, the abrasive action (sustainability is high), but the repulsion constant of the polishing H used here is extremely small, and the normally used vitrified is 1/10'6 of that of stone. Because of this, it is less susceptible to mechanical precision, mainly rotational precision, creating a relatively uniform and small surface roughness.

By the way, the roughness of the machined surface and the amount of machining using the conventional C=tool largely depend on the grain size of the abrasive grains included in the polishing month (4), and the relationship between the grain size of the abrasive grains and the roughness of the machined surface is expressed by the third As shown in the figure, the larger the abrasive grain size, that is, the smaller the grain size, the smaller the roughness, and the smaller the grain size, the larger the processing amount.

Therefore, from several to several μm R7 base surface roughness, 0.0
If you want to finish to a mirror surface of 571mRz, for example, ≠2
Rough 710 machining with 00~≠300 abrasive and 0.5μ/?
IR around 2, then 0.1 at ≠600 to ≠800
Medium finishing of μm technique 2 and +1000~+2000
The method used is to obtain a mirror surface of 0.05 pndLt using an abrasive material of

On the other hand, as shown in Fig. 41, there is a fourth
Processing marks as shown in the figure are marked, and the unevenness of these marks is roughness. The streaks become thinner as the mirror surface IW becomes more striped, and are no longer visible to the naked eye after about 0.03 cm. It can be seen that the roughness is determined by the outer circumferential portion of the disc-shaped tool electric surface shown in FIG. 1, since the streaks indicating this roughness correspond to the diameter of the tool polarization.

This invention was made with the above points in mind,
A disc-shaped rotary tool is used in the electrolytic composite m1n+ polarization tool for machining, which processes the workpiece metal into a mirror finish by combining the elution and removal action of the workpiece metal of anode rotation by electrolytic action and the mechanical abrasive abrasion action. An electrolytic composite mirror polishing machine characterized in that an abrasive material for rough machining is provided in the center of the mold surface side, and a +lit abrasive material for finishing machining is applied as a rim around the outer periphery of the abrasive material for rough machining. It is an electrode tool for

Therefore, since the abrasive material for rough polishing is provided in the center of the tool's polarizing surface side 1 and the abrasive material for finishing is provided on the outer periphery of the abrasive material, the abrasive material in the center part is provided in one machining process. The base processing and the finishing processing on the abrasive material on the outer periphery can be done separately, and the number of processing steps can be reduced.

The present invention will now be explained with reference to FIG. 5 and subsequent drawings showing an embodiment thereof.

In FIGS. 5 and 46 showing the first embodiment, (
8) is the best! The tool electrode holder (9) is rotated by an II device and connected to the cathode of a DC power supply, (9) is electrically connected to the lower part of the holder (8), and the read disk-shaped rotary tool %, 00 is A plurality of circular electrolyte supply holes are provided through the electrode (9), and (11) is a rough 7JO abrasive material placed in the center of the lower surface of the electrode (9), which is water-repellent. Eleven abrasive grains with a small abrasive grain size of δ are attached to the elastic nonwoven 141i. (121 is a finishing abrasive material attached to the lower surface of the electrode (9) and arranged on the outer periphery of the roughing abrasive material (11), in which large abrasive grains adhere to the water-permeable nonwoven fabric. (13) is an electrolytic solution flowing out from the supply path (141) of the holder (fl) to the machined surface of the workpiece metal through the supply hole and the abrasive materials +111 and ++21.

For example, the roughness of the base surface of the metal to be processed is several μm.
In the case of Hz, the abrasive grain size of the abrasive material (11) in the center of the electrode (9) is 200 to 300 mm and the diameter is 180 mm, and the abrasive grain size of the abrasive material in the outer periphery is 600 to 800 mm. Under the conditions that the outer diameter is φ240 and the machining current is 300 to 500 A, and the tool feed rate is 300 to 500 η in, mirror finishing with a machining depth of 8 to 15 μm and a machined surface roughness of 0.1 μmH2 is possible.

In addition, by providing an abrasive material of ÷1000 to ≠2000 on the outer periphery, the 0,0
Mirror finishing at 5 μmHz is possible in one process.

- On the other hand, in the 'It-resolved mirror polishing method, which combines the anodic bathing action of the workpiece metal by electrolysis and the mechanical abrasive grain abrasion action, it is difficult to create a mirror surface in the region of creating a mirror surface of 0.3 μmRz or more. Appropriate balance conditions are required between the stand and the abrasive grain rubbing line e, and if the electrolytic action is too strong, clouding will occur, and the larger the abrasive grain size, the smaller the electrolytic action (mainly the flow of the solder).

Therefore, when rough machining is required, as shown in Figures 7 and 8, use a small abrasive material (1
5) is attached to the entire lower surface of the disc-shaped rotary tool electrode (9), and an abrasive material (16) with a large abrasive grain size is attached to the outer periphery of the electrode (9).
This is attached to the bottom surface of the attached annular insulator (17), and the large abrasive grains IW on the outer periphery of the grinding surface (
According to 16), it is desirable to properly balance the particle suspension flux circle t with the leakage current from the central polarization (9), and according to experiments, this leakage current is It shows a nearly linear decrease in the range of 15 to 30 m1% from the outer circumference 4, and it is desirable that the dimension of the insulator (1η) is also determined by this leakage current range.

[Brief explanation of the drawing]

Figure 1 is a cutaway front view of a Kame Ichigi tool in the United States, and Figure 2 is a cut-away front view of a Kame Ichigi tool in the United States.
Figure 3 is a diagram showing the relationship between abrasive grain size and machined surface roughness, Figure 4 is a diagram showing machining marks, and Figure 5 is a cutaway front view of one embodiment of the electrode tool of the present invention. , FIG. 6 is a bottom view of the tool of FIG. 5, FIG. 7 is a cutaway front view of another embodiment of the invention, and FIG. 8 is a bottom view of the tool 14 of FIG. (9)... Tool heart yearning, (II... Ie as a picture card, tll
l, 1121, (151, (161... Abrasive material, (13)... Electrolyte, (171... Insulator. Bag arrogance (#) Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Scope of Claims] ■ Electrolytic interlocking for surface-machining the workpiece metal by combining the anodic removal action of the workpiece metal and the mechanical abrasive sweeping action by Kameikaisakuha 1. Electrode for machining the shell■ In the shell, the central part of the disk-shaped rotary tool electrode surface side is used for sawing rough machining. A ridge pole tool for bending and α-cohering mirror surface machining, which is characterized by its placement. ■ An abrasive material for rough machining is placed on the electrode surface of the disc-shaped rotating tool.
A ring-shaped insulator is integrally provided on the outer periphery of the tool polarization, and an abrasive material for finishing is provided in the part () of the insulator, as set forth in claim I (1). A polarizing tool for screw-warming process.